1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>AllegroGL: glvtable.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="alleggl.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.3 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">AllegroGL <span id="projectnumber">0.4.4</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
</div>
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
initNavTree('glvtable_8c.html','');
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<h1>glvtable.c</h1> </div>
</div>
<div class="contents">
<a href="glvtable_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* This code is (C) AllegroGL contributors, and double licensed under</span>
<a name="l00002"></a>00002 <span class="comment"> * the GPL and zlib licenses. See gpl.txt or zlib.txt for details.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include <string.h></span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="preprocessor">#include <allegro.h></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#ifdef ALLEGRO_WINDOWS</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#include <winalleg.h></span>
<a name="l00014"></a>00014 <span class="preprocessor">#endif</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include "alleggl.h"</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include "allglint.h"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "glvtable.h"</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <allegro/internal/aintern.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#ifdef ALLEGRO_MACOSX</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#include <OpenGL/glu.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#else</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#include <GL/glu.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#endif</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">static</span> GFX_VTABLE allegro_gl_screen_vtable;
<a name="l00028"></a>00028 <span class="keyword">static</span> GLuint __allegro_gl_pool_texture = 0;
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">static</span> GLuint __allegro_gl_dummy_texture = 0; <span class="comment">/* For ATI Rage Pro */</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keyword">static</span> <span class="keywordtype">int</span> __agl_owning_drawing_pattern_tex = FALSE;
<a name="l00033"></a>00033 GLuint __agl_drawing_pattern_tex = 0;
<a name="l00034"></a>00034 BITMAP *__agl_drawing_pattern_bmp = 0;
<a name="l00035"></a>00035 <span class="keyword">static</span> <span class="keywordtype">int</span> __agl_drawing_mode = DRAW_MODE_SOLID;
<a name="l00036"></a>00036
<a name="l00037"></a>00037
<a name="l00058"></a>00058 <span class="comment">/* Computes the next power of two if the number wasn't a power of two to start</span>
<a name="l00059"></a>00059 <span class="comment"> * with. Ref: http://bob.allegronetwork.com/prog/tricks.html#roundtonextpowerof2</span>
<a name="l00060"></a>00060 <span class="comment"> */</span>
<a name="l00061"></a>00061 <span class="keywordtype">int</span> __allegro_gl_make_power_of_2(<span class="keywordtype">int</span> x) {
<a name="l00062"></a>00062 x--;
<a name="l00063"></a>00063 x |= (x >> 1);
<a name="l00064"></a>00064 x |= (x >> 2);
<a name="l00065"></a>00065 x |= (x >> 4);
<a name="l00066"></a>00066 x |= (x >> 8);
<a name="l00067"></a>00067 x |= (x >> 16);
<a name="l00068"></a>00068 x++;
<a name="l00069"></a>00069 <span class="keywordflow">return</span> x;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="comment">/* allegro_gl_drawing_mode (GFX_DRIVER vtable entry):</span>
<a name="l00075"></a>00075 <span class="comment"> * Sets the drawing mode. Same implementation to all GFX vtables.</span>
<a name="l00076"></a>00076 <span class="comment"> */</span>
<a name="l00077"></a>00077 <span class="keywordtype">void</span> allegro_gl_drawing_mode(<span class="keywordtype">void</span>) {
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (__agl_drawing_mode == _drawing_mode)
<a name="l00079"></a>00079 <span class="keywordflow">return</span>;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">switch</span> (__agl_drawing_mode) {
<a name="l00082"></a>00082 <span class="keywordflow">case</span> DRAW_MODE_TRANS:
<a name="l00083"></a>00083 glDisable(GL_BLEND);
<a name="l00084"></a>00084 <span class="keywordflow">break</span>;
<a name="l00085"></a>00085 <span class="keywordflow">case</span> DRAW_MODE_XOR:
<a name="l00086"></a>00086 glDisable(GL_COLOR_LOGIC_OP);
<a name="l00087"></a>00087 <span class="keywordflow">break</span>;
<a name="l00088"></a>00088 <span class="keywordflow">case</span> DRAW_MODE_COPY_PATTERN:
<a name="l00089"></a>00089 glDisable(GL_TEXTURE_2D);
<a name="l00090"></a>00090 glBindTexture(GL_TEXTURE_2D, 0);
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (__agl_owning_drawing_pattern_tex && __agl_drawing_pattern_tex)
<a name="l00092"></a>00092 glDeleteTextures(1, &__agl_drawing_pattern_tex);
<a name="l00093"></a>00093 __agl_drawing_pattern_tex = 0;
<a name="l00094"></a>00094 __agl_drawing_pattern_bmp = 0;
<a name="l00095"></a>00095 <span class="keywordflow">break</span>;
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 __agl_drawing_mode = _drawing_mode;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">switch</span> (_drawing_mode) {
<a name="l00101"></a>00101 <span class="keywordflow">case</span> DRAW_MODE_TRANS:
<a name="l00102"></a>00102 glEnable(GL_BLEND);
<a name="l00103"></a>00103 <span class="keywordflow">break</span>;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keywordflow">case</span> DRAW_MODE_XOR:
<a name="l00106"></a>00106 glEnable(GL_COLOR_LOGIC_OP);
<a name="l00107"></a>00107 glLogicOp(GL_XOR);
<a name="l00108"></a>00108 <span class="keywordflow">break</span>;
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordflow">case</span> DRAW_MODE_COPY_PATTERN:
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (is_memory_bitmap(_drawing_pattern)) {
<a name="l00112"></a>00112 __agl_drawing_pattern_tex =
<a name="l00113"></a>00113 <a class="code" href="group__texture.html#gae071354f76bc28e1bafbd90bdecbc0c9" title="Uploads an Allegro BITMAP to the GL driver as a texture.">allegro_gl_make_texture</a>(_drawing_pattern);
<a name="l00114"></a>00114 __agl_drawing_pattern_bmp = _drawing_pattern;
<a name="l00115"></a>00115 __agl_owning_drawing_pattern_tex = TRUE;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_video_bitmap(_drawing_pattern)) {
<a name="l00118"></a>00118 AGL_VIDEO_BITMAP *bmp = _drawing_pattern->extra;
<a name="l00119"></a>00119 __agl_drawing_pattern_tex = bmp->tex;
<a name="l00120"></a>00120 __agl_drawing_pattern_bmp = bmp->memory_copy;
<a name="l00121"></a>00121 __agl_owning_drawing_pattern_tex = FALSE;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123
<a name="l00124"></a>00124 glEnable(GL_TEXTURE_2D);
<a name="l00125"></a>00125 glBindTexture(GL_TEXTURE_2D, __agl_drawing_pattern_tex);
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keywordflow">break</span>;
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordtype">void</span> split_color(<span class="keywordtype">int</span> color, GLubyte *r, GLubyte *g, GLubyte *b, GLubyte *a,
<a name="l00133"></a>00133 <span class="keywordtype">int</span> color_depth)
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 AGL_LOG(2, <span class="stringliteral">"glvtable.c:split_color\n"</span>);
<a name="l00136"></a>00136 *r = getr_depth(color_depth, color);
<a name="l00137"></a>00137 *g = getg_depth(color_depth, color);
<a name="l00138"></a>00138 *b = getb_depth(color_depth, color);
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (color_depth == 32)
<a name="l00140"></a>00140 *a = geta_depth(color_depth, color);
<a name="l00141"></a>00141 <span class="keywordflow">else</span>
<a name="l00142"></a>00142 *a = 255;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="comment">/* allegro_gl_created_sub_bitmap:</span>
<a name="l00147"></a>00147 <span class="comment"> */</span>
<a name="l00148"></a>00148 <span class="keywordtype">void</span> allegro_gl_created_sub_bitmap(BITMAP *bmp, BITMAP *parent)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 bmp->extra = parent;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">/* static void allegro_gl_screen_acquire(struct BITMAP *bmp) */</span>
<a name="l00160"></a><a class="code" href="group__glvtable.html#ga702812e50246c61eb9f01fd8aba69325">00160</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__glvtable.html#ga702812e50246c61eb9f01fd8aba69325" title="acquire_bitmap(screen) overload.">allegro_gl_screen_acquire</a>(<span class="keyword">struct</span> BITMAP *bmp) {}
<a name="l00161"></a>00161
<a name="l00162"></a>00162
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">/* static void allegro_gl_screen_release(struct BITMAP *bmp) */</span>
<a name="l00170"></a><a class="code" href="group__glvtable.html#ga6c2b0685587a0feafcb194a9a67d6aa9">00170</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__glvtable.html#ga6c2b0685587a0feafcb194a9a67d6aa9" title="release_bitmap(screen) overload.">allegro_gl_screen_release</a>(<span class="keyword">struct</span> BITMAP *bmp) {}
<a name="l00171"></a>00171
<a name="l00172"></a>00172
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keyword">static</span> <span class="keywordtype">int</span> allegro_gl_screen_getpixel(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 GLubyte pixel[3];
<a name="l00177"></a>00177 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_getpixel\n"</span>);
<a name="l00178"></a>00178 <span class="keywordflow">if</span> (bmp->clip && (x < bmp->cl || x >= bmp->cr
<a name="l00179"></a>00179 || y < bmp->ct || y >= bmp->cb)) {
<a name="l00180"></a>00180 <span class="keywordflow">return</span> -1;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00183"></a>00183 x += bmp->x_ofs;
<a name="l00184"></a>00184 y += bmp->y_ofs;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186 glReadPixels(x, bmp->h - y - 1, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, pixel);
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="keywordflow">return</span> makecol_depth(bitmap_color_depth(screen),
<a name="l00189"></a>00189 pixel[0], pixel[1], pixel[2]);
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a>00192
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_putpixel(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y,
<a name="l00195"></a>00195 <span class="keywordtype">int</span> color)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 GLubyte r, g, b, a;
<a name="l00198"></a>00198 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_putpixel\n"</span>);
<a name="l00199"></a>00199 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (bmp->clip && (x < bmp->cl || x >= bmp->cr
<a name="l00201"></a>00201 || y < bmp->ct || y >= bmp->cb)) {
<a name="l00202"></a>00202 <span class="keywordflow">return</span>;
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00206"></a>00206 x += bmp->x_ofs;
<a name="l00207"></a>00207 y += bmp->y_ofs;
<a name="l00208"></a>00208 }
<a name="l00209"></a>00209
<a name="l00210"></a>00210 glColor4ub(r, g, b, a);
<a name="l00211"></a>00211 glBegin(GL_POINTS);
<a name="l00212"></a>00212 glVertex2f(x, y);
<a name="l00213"></a>00213 glEnd();
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215
<a name="l00216"></a>00216
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_vline(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y1, <span class="keywordtype">int</span> y2,
<a name="l00219"></a>00219 <span class="keywordtype">int</span> color)
<a name="l00220"></a>00220 {
<a name="l00221"></a>00221 GLubyte r, g, b, a;
<a name="l00222"></a>00222 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_vline\n"</span>);
<a name="l00223"></a>00223
<a name="l00224"></a>00224 <span class="keywordflow">if</span> (y1 > y2) {
<a name="l00225"></a>00225 <span class="keywordtype">int</span> temp = y1;
<a name="l00226"></a>00226 y1 = y2;
<a name="l00227"></a>00227 y2 = temp;
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00231"></a>00231 <span class="keywordflow">if</span> ((x < bmp->cl) || (x >= bmp->cr)) {
<a name="l00232"></a>00232 <span class="keywordflow">return</span>;
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 <span class="keywordflow">if</span> ((y1 >= bmp->cb) || (y2 < bmp->ct)) {
<a name="l00235"></a>00235 <span class="keywordflow">return</span>;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 <span class="keywordflow">if</span> (y1 < bmp->ct) {
<a name="l00238"></a>00238 y1 = bmp->ct;
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (y2 >= bmp->cb) {
<a name="l00241"></a>00241 y2 = bmp->cb - 1;
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00246"></a>00246 x += bmp->x_ofs;
<a name="l00247"></a>00247 y1 += bmp->y_ofs;
<a name="l00248"></a>00248 y2 += bmp->y_ofs;
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00252"></a>00252
<a name="l00253"></a>00253 glColor4ub(r, g, b, a);
<a name="l00254"></a>00254 glBegin(GL_LINES);
<a name="l00255"></a>00255 glVertex2f(x, y1);
<a name="l00256"></a>00256 glVertex2f(x, y2 + 0.325 * 3);
<a name="l00257"></a>00257 glEnd();
<a name="l00258"></a>00258
<a name="l00259"></a>00259 <span class="keywordflow">return</span>;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_hline(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y, <span class="keywordtype">int</span> x2,
<a name="l00265"></a>00265 <span class="keywordtype">int</span> color)
<a name="l00266"></a>00266 {
<a name="l00267"></a>00267 GLubyte r, g, b, a;
<a name="l00268"></a>00268 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_hline\n"</span>);
<a name="l00269"></a>00269
<a name="l00270"></a>00270 <span class="keywordflow">if</span> (x1 > x2) {
<a name="l00271"></a>00271 <span class="keywordtype">int</span> temp = x1;
<a name="l00272"></a>00272 x1 = x2;
<a name="l00273"></a>00273 x2 = temp;
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00276"></a>00276 <span class="keywordflow">if</span> ((y < bmp->ct) || (y >= bmp->cb)) {
<a name="l00277"></a>00277 <span class="keywordflow">return</span>;
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279 <span class="keywordflow">if</span> ((x1 >= bmp->cr) || (x2 < bmp->cl)) {
<a name="l00280"></a>00280 <span class="keywordflow">return</span>;
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282 <span class="keywordflow">if</span> (x1 < bmp->cl) {
<a name="l00283"></a>00283 x1 = bmp->cl;
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285 <span class="keywordflow">if</span> (x2 >= bmp->cr) {
<a name="l00286"></a>00286 x2 = bmp->cr - 1;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00290"></a>00290 x1 += bmp->x_ofs;
<a name="l00291"></a>00291 x2 += bmp->x_ofs;
<a name="l00292"></a>00292 y += bmp->y_ofs;
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294
<a name="l00295"></a>00295 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00296"></a>00296
<a name="l00297"></a>00297 glColor4ub(r, g, b, a);
<a name="l00298"></a>00298 glBegin(GL_LINES);
<a name="l00299"></a>00299 glVertex2f(x1 - 0.325, y);
<a name="l00300"></a>00300 glVertex2f(x2 + 0.325 * 2, y);
<a name="l00301"></a>00301 glEnd();
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="keywordflow">return</span>;
<a name="l00304"></a>00304 }
<a name="l00305"></a>00305
<a name="l00306"></a>00306
<a name="l00307"></a>00307
<a name="l00308"></a>00308 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_line(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1, <span class="keywordtype">int</span> x2,
<a name="l00309"></a>00309 <span class="keywordtype">int</span> y2, <span class="keywordtype">int</span> color)
<a name="l00310"></a>00310 {
<a name="l00311"></a>00311 GLubyte r, g, b, a;
<a name="l00312"></a>00312 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_line\n"</span>);
<a name="l00313"></a>00313
<a name="l00314"></a>00314 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00315"></a>00315 glPushAttrib(GL_SCISSOR_BIT);
<a name="l00316"></a>00316 glEnable(GL_SCISSOR_TEST);
<a name="l00317"></a>00317 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l00318"></a>00318 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00321"></a>00321 x1 += bmp->x_ofs;
<a name="l00322"></a>00322 x2 += bmp->x_ofs;
<a name="l00323"></a>00323 y1 += bmp->y_ofs;
<a name="l00324"></a>00324 y2 += bmp->y_ofs;
<a name="l00325"></a>00325 }
<a name="l00326"></a>00326
<a name="l00327"></a>00327 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00328"></a>00328
<a name="l00329"></a>00329 glColor4ub(r, g, b, a);
<a name="l00330"></a>00330 glBegin(GL_LINES);
<a name="l00331"></a>00331 glVertex2f(x1 + 0.1625, y1 + 0.1625);
<a name="l00332"></a>00332 glVertex2f(x2 + 0.1625, y2 + 0.1625);
<a name="l00333"></a>00333 glEnd();
<a name="l00334"></a>00334
<a name="l00335"></a>00335 <span class="comment">/* OpenGL skips the endpoint when drawing lines */</span>
<a name="l00336"></a>00336 glBegin(GL_POINTS);
<a name="l00337"></a>00337 glVertex2f(x2 + 0.1625, y2 + 0.1625);
<a name="l00338"></a>00338 glEnd();
<a name="l00339"></a>00339
<a name="l00340"></a>00340 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00341"></a>00341 glPopAttrib();
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343
<a name="l00344"></a>00344 <span class="keywordflow">return</span>;
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346
<a name="l00347"></a>00347
<a name="l00348"></a>00348 <span class="preprocessor">#define SET_TEX_COORDS(x, y) \</span>
<a name="l00349"></a>00349 <span class="preprocessor"> do { \</span>
<a name="l00350"></a>00350 <span class="preprocessor"> if (__agl_drawing_pattern_tex) { \</span>
<a name="l00351"></a>00351 <span class="preprocessor"> glTexCoord2f ( \</span>
<a name="l00352"></a>00352 <span class="preprocessor"> (x - _drawing_x_anchor) / (float)__agl_drawing_pattern_bmp->w,\</span>
<a name="l00353"></a>00353 <span class="preprocessor"> (y - _drawing_y_anchor) / (float)__agl_drawing_pattern_bmp->h \</span>
<a name="l00354"></a>00354 <span class="preprocessor"> ); \</span>
<a name="l00355"></a>00355 <span class="preprocessor"> } \</span>
<a name="l00356"></a>00356 <span class="preprocessor"> } while(0)</span>
<a name="l00357"></a>00357 <span class="preprocessor"></span>
<a name="l00358"></a>00358
<a name="l00359"></a>00359 <span class="keywordtype">void</span> allegro_gl_screen_rectfill(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1,
<a name="l00360"></a>00360 <span class="keywordtype">int</span> x2, <span class="keywordtype">int</span> y2, <span class="keywordtype">int</span> color)
<a name="l00361"></a>00361 {
<a name="l00362"></a>00362 GLubyte r, g, b, a;
<a name="l00363"></a>00363 GLfloat old_col[4];
<a name="l00364"></a>00364 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_rectfill\n"</span>);
<a name="l00365"></a>00365
<a name="l00366"></a>00366 <span class="keywordflow">if</span> (x1 > x2) {
<a name="l00367"></a>00367 <span class="keywordtype">int</span> temp = x1;
<a name="l00368"></a>00368 x1 = x2;
<a name="l00369"></a>00369 x2 = temp;
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371
<a name="l00372"></a>00372 <span class="keywordflow">if</span> (y1 > y2) {
<a name="l00373"></a>00373 <span class="keywordtype">int</span> temp = y1;
<a name="l00374"></a>00374 y1 = y2;
<a name="l00375"></a>00375 y2 = temp;
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00379"></a>00379 <span class="keywordflow">if</span> ((x1 > bmp->cr) || (x2 < bmp->cl)) {
<a name="l00380"></a>00380 <span class="keywordflow">return</span>;
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382 <span class="keywordflow">if</span> (x1 < bmp->cl) {
<a name="l00383"></a>00383 x1 = bmp->cl;
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385 <span class="keywordflow">if</span> (x2 > bmp->cr) {
<a name="l00386"></a>00386 x2 = bmp->cr;
<a name="l00387"></a>00387 }
<a name="l00388"></a>00388 <span class="keywordflow">if</span> ((y1 > bmp->cb) || (y2 < bmp->ct)) {
<a name="l00389"></a>00389 <span class="keywordflow">return</span>;
<a name="l00390"></a>00390 }
<a name="l00391"></a>00391 <span class="keywordflow">if</span> (y1 < bmp->ct) {
<a name="l00392"></a>00392 y1 = bmp->ct;
<a name="l00393"></a>00393 }
<a name="l00394"></a>00394 <span class="keywordflow">if</span> (y2 > bmp->cb) {
<a name="l00395"></a>00395 y2 = bmp->cb;
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397 }
<a name="l00398"></a>00398 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00399"></a>00399 x1 += bmp->x_ofs;
<a name="l00400"></a>00400 x2 += bmp->x_ofs;
<a name="l00401"></a>00401 y1 += bmp->y_ofs;
<a name="l00402"></a>00402 y2 += bmp->y_ofs;
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404
<a name="l00405"></a>00405 glGetFloatv(GL_CURRENT_COLOR, old_col);
<a name="l00406"></a>00406 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00407"></a>00407 glColor4ub(r, g, b, a);
<a name="l00408"></a>00408
<a name="l00409"></a>00409 glBegin(GL_QUADS);
<a name="l00410"></a>00410 SET_TEX_COORDS(x1, y1);
<a name="l00411"></a>00411 glVertex2f(x1, y1);
<a name="l00412"></a>00412 SET_TEX_COORDS(x2, y1);
<a name="l00413"></a>00413 glVertex2f(x2, y1);
<a name="l00414"></a>00414 SET_TEX_COORDS(x2, y2);
<a name="l00415"></a>00415 glVertex2f(x2, y2);
<a name="l00416"></a>00416 SET_TEX_COORDS(x1, y2);
<a name="l00417"></a>00417 glVertex2f(x1, y2);
<a name="l00418"></a>00418 glEnd();
<a name="l00419"></a>00419
<a name="l00420"></a>00420 glColor4fv(old_col);
<a name="l00421"></a>00421
<a name="l00422"></a>00422 <span class="keywordflow">return</span>;
<a name="l00423"></a>00423 }
<a name="l00424"></a>00424
<a name="l00425"></a>00425
<a name="l00426"></a>00426
<a name="l00427"></a>00427 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_triangle(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1,
<a name="l00428"></a>00428 <span class="keywordtype">int</span> x2, <span class="keywordtype">int</span> y2, <span class="keywordtype">int</span> x3, <span class="keywordtype">int</span> y3, <span class="keywordtype">int</span> color)
<a name="l00429"></a>00429 {
<a name="l00430"></a>00430 GLubyte r, g, b, a;
<a name="l00431"></a>00431 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_triangle\n"</span>);
<a name="l00432"></a>00432
<a name="l00433"></a>00433 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l00434"></a>00434
<a name="l00435"></a>00435 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00436"></a>00436 glPushAttrib(GL_SCISSOR_BIT);
<a name="l00437"></a>00437 glEnable(GL_SCISSOR_TEST);
<a name="l00438"></a>00438 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l00439"></a>00439 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l00440"></a>00440 }
<a name="l00441"></a>00441 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l00442"></a>00442 x1 += bmp->x_ofs;
<a name="l00443"></a>00443 y1 += bmp->y_ofs;
<a name="l00444"></a>00444 x2 += bmp->x_ofs;
<a name="l00445"></a>00445 y2 += bmp->y_ofs;
<a name="l00446"></a>00446 x3 += bmp->x_ofs;
<a name="l00447"></a>00447 y3 += bmp->y_ofs;
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449
<a name="l00450"></a>00450 glColor4ub(r, g, b, a);
<a name="l00451"></a>00451 glBegin(GL_TRIANGLES);
<a name="l00452"></a>00452 SET_TEX_COORDS(x1, y1);
<a name="l00453"></a>00453 glVertex2f(x1, y1);
<a name="l00454"></a>00454 SET_TEX_COORDS(x2, y2);
<a name="l00455"></a>00455 glVertex2f(x2, y2);
<a name="l00456"></a>00456 SET_TEX_COORDS(x3, y3);
<a name="l00457"></a>00457 glVertex2f(x3, y3);
<a name="l00458"></a>00458 glEnd();
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l00461"></a>00461 glPopAttrib();
<a name="l00462"></a>00462 }
<a name="l00463"></a>00463 }
<a name="l00464"></a>00464
<a name="l00465"></a>00465
<a name="l00466"></a>00466
<a name="l00467"></a>00467 <span class="preprocessor">#define BITMAP_BLIT_CLIP(source, dest, source_x, source_y, dest_x, dest_y, \</span>
<a name="l00468"></a>00468 <span class="preprocessor"> width, height) { \</span>
<a name="l00469"></a>00469 <span class="preprocessor"> if (dest->clip) { \</span>
<a name="l00470"></a>00470 <span class="preprocessor"> if ((dest_x >= dest->cr) || (dest_y >= dest->cb) \</span>
<a name="l00471"></a>00471 <span class="preprocessor"> || (dest_x + width < dest->cl) || (dest_y + height < dest->ct)) { \</span>
<a name="l00472"></a>00472 <span class="preprocessor"> width = 0; \</span>
<a name="l00473"></a>00473 <span class="preprocessor"> } \</span>
<a name="l00474"></a>00474 <span class="preprocessor"> if (dest_x < dest->cl) { \</span>
<a name="l00475"></a>00475 <span class="preprocessor"> width += dest_x - dest->cl; \</span>
<a name="l00476"></a>00476 <span class="preprocessor"> source_x -= dest_x - dest->cl; \</span>
<a name="l00477"></a>00477 <span class="preprocessor"> dest_x = dest->cl; \</span>
<a name="l00478"></a>00478 <span class="preprocessor"> } \</span>
<a name="l00479"></a>00479 <span class="preprocessor"> if (dest_y < dest->ct) { \</span>
<a name="l00480"></a>00480 <span class="preprocessor"> height += dest_y - dest->ct; \</span>
<a name="l00481"></a>00481 <span class="preprocessor"> source_y -= dest_y - dest->ct; \</span>
<a name="l00482"></a>00482 <span class="preprocessor"> dest_y = dest->ct; \</span>
<a name="l00483"></a>00483 <span class="preprocessor"> } \</span>
<a name="l00484"></a>00484 <span class="preprocessor"> if (dest_x + width > dest->cr) { \</span>
<a name="l00485"></a>00485 <span class="preprocessor"> width = dest->cr - dest_x; \</span>
<a name="l00486"></a>00486 <span class="preprocessor"> } \</span>
<a name="l00487"></a>00487 <span class="preprocessor"> if (dest_y + height > dest->cb) { \</span>
<a name="l00488"></a>00488 <span class="preprocessor"> height = dest->cb - dest_y; \</span>
<a name="l00489"></a>00489 <span class="preprocessor"> } \</span>
<a name="l00490"></a>00490 <span class="preprocessor"> } \</span>
<a name="l00491"></a>00491 <span class="preprocessor"> if (source->clip) { \</span>
<a name="l00492"></a>00492 <span class="preprocessor"> if ((source_x >= source->cr) || (source_y >= source->cb) \</span>
<a name="l00493"></a>00493 <span class="preprocessor"> || (source_x + width < source->cl) \</span>
<a name="l00494"></a>00494 <span class="preprocessor"> || (source_y + height < source->ct)) { \</span>
<a name="l00495"></a>00495 <span class="preprocessor"> width = 0; \</span>
<a name="l00496"></a>00496 <span class="preprocessor"> } \</span>
<a name="l00497"></a>00497 <span class="preprocessor"> if (source_x < source->cl) { \</span>
<a name="l00498"></a>00498 <span class="preprocessor"> width += source_x - source->cl; \</span>
<a name="l00499"></a>00499 <span class="preprocessor"> dest_x -= source_x - source->cl; \</span>
<a name="l00500"></a>00500 <span class="preprocessor"> source_x = source->cl; \</span>
<a name="l00501"></a>00501 <span class="preprocessor"> } \</span>
<a name="l00502"></a>00502 <span class="preprocessor"> if (source_y < source->ct) { \</span>
<a name="l00503"></a>00503 <span class="preprocessor"> height += source_y - source->ct; \</span>
<a name="l00504"></a>00504 <span class="preprocessor"> dest_y -= source_y - source->ct; \</span>
<a name="l00505"></a>00505 <span class="preprocessor"> source_y = source->ct; \</span>
<a name="l00506"></a>00506 <span class="preprocessor"> } \</span>
<a name="l00507"></a>00507 <span class="preprocessor"> if (source_x + width > source->cr) { \</span>
<a name="l00508"></a>00508 <span class="preprocessor"> width = source->cr - source_x; \</span>
<a name="l00509"></a>00509 <span class="preprocessor"> } \</span>
<a name="l00510"></a>00510 <span class="preprocessor"> if (source_y + height > source->cb) { \</span>
<a name="l00511"></a>00511 <span class="preprocessor"> height = source->cb - source_y; \</span>
<a name="l00512"></a>00512 <span class="preprocessor"> } \</span>
<a name="l00513"></a>00513 <span class="preprocessor"> } \</span>
<a name="l00514"></a>00514 <span class="preprocessor">}</span>
<a name="l00515"></a>00515 <span class="preprocessor"></span>
<a name="l00516"></a>00516
<a name="l00517"></a>00517
<a name="l00518"></a>00518
<a name="l00519"></a>00519 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_blit_from_memory(
<a name="l00520"></a>00520 <span class="keyword">struct</span> BITMAP *source, <span class="keyword">struct</span> BITMAP *dest,
<a name="l00521"></a>00521 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l00522"></a>00522 {
<a name="l00523"></a>00523 GLfloat saved_zoom_x, saved_zoom_y;
<a name="l00524"></a>00524 GLint saved_row_length;
<a name="l00525"></a>00525 BITMAP *temp = NULL;
<a name="l00526"></a>00526 <span class="keywordtype">void</span> *data;
<a name="l00527"></a>00527 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_blit_from_memory\n"</span>);
<a name="l00528"></a>00528
<a name="l00529"></a>00529 BITMAP_BLIT_CLIP(source, dest, source_x, source_y, dest_x, dest_y,
<a name="l00530"></a>00530 width, height);
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">if</span> (width <= 0 || height <= 0) {
<a name="l00533"></a>00533 <span class="keywordflow">return</span>;
<a name="l00534"></a>00534 }
<a name="l00535"></a>00535
<a name="l00536"></a>00536
<a name="l00537"></a>00537 <span class="keywordflow">if</span> (is_sub_bitmap(dest)) {
<a name="l00538"></a>00538 dest_x += dest->x_ofs;
<a name="l00539"></a>00539 dest_y += dest->y_ofs;
<a name="l00540"></a>00540 }
<a name="l00541"></a>00541
<a name="l00542"></a>00542 <span class="comment">/* Note: We don't need to offset the source bitmap coordinates</span>
<a name="l00543"></a>00543 <span class="comment"> * because we use source->line[] directly, which is already offsetted for</span>
<a name="l00544"></a>00544 <span class="comment"> * us.</span>
<a name="l00545"></a>00545 <span class="comment"> */</span>
<a name="l00546"></a>00546 data = source->line[source_y]
<a name="l00547"></a>00547 + source_x * BYTES_PER_PIXEL(bitmap_color_depth(source));
<a name="l00548"></a>00548
<a name="l00549"></a>00549 <span class="comment">/* If packed pixels (or GL 1.2) isn't supported, then we need to convert</span>
<a name="l00550"></a>00550 <span class="comment"> * the bitmap into something GL can understand - 24-bpp should do it.</span>
<a name="l00551"></a>00551 <span class="comment"> */</span>
<a name="l00552"></a>00552 <span class="keywordflow">if</span> (!<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.EXT_packed_pixels
<a name="l00553"></a>00553 && bitmap_color_depth(source) < 24) {
<a name="l00554"></a>00554 temp = create_bitmap_ex(24, width, height);
<a name="l00555"></a>00555
<a name="l00556"></a>00556 <span class="keywordflow">if</span> (temp) {
<a name="l00557"></a>00557 blit(source, temp, source_x, source_y, 0, 0, width, height);
<a name="l00558"></a>00558 source_x = 0;
<a name="l00559"></a>00559 source_y = 0;
<a name="l00560"></a>00560 data = temp->line[0];
<a name="l00561"></a>00561 }
<a name="l00562"></a>00562 <span class="keywordflow">else</span> {
<a name="l00563"></a>00563 <span class="comment">/* XXX <rohannessian> Report error? */</span>
<a name="l00564"></a>00564 <span class="keywordflow">return</span>;
<a name="l00565"></a>00565 }
<a name="l00566"></a>00566 source = temp;
<a name="l00567"></a>00567 }
<a name="l00568"></a>00568
<a name="l00569"></a>00569
<a name="l00570"></a>00570 <span class="comment">/* Save state */</span>
<a name="l00571"></a>00571 glGetFloatv(GL_ZOOM_X, &saved_zoom_x);
<a name="l00572"></a>00572 glGetFloatv(GL_ZOOM_Y, &saved_zoom_y);
<a name="l00573"></a>00573 glGetIntegerv(GL_UNPACK_ROW_LENGTH, &saved_row_length);
<a name="l00574"></a>00574
<a name="l00575"></a>00575 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l00576"></a>00576
<a name="l00577"></a>00577 glRasterPos2i(dest_x, dest_y);
<a name="l00578"></a>00578
<a name="l00579"></a>00579 <span class="comment">/* XXX <rohannessian> I wonder if it would be faster to use glDrawPixels()</span>
<a name="l00580"></a>00580 <span class="comment"> * one line at a time instead of playing with the Zoom factor.</span>
<a name="l00581"></a>00581 <span class="comment"> */</span>
<a name="l00582"></a>00582 glPixelZoom (1.0, -1.0);
<a name="l00583"></a>00583 glPixelStorei(GL_UNPACK_ROW_LENGTH,
<a name="l00584"></a>00584 (source->line[1] - source->line[0])
<a name="l00585"></a>00585 / BYTES_PER_PIXEL(source->vtable->color_depth));
<a name="l00586"></a>00586
<a name="l00587"></a>00587 glDrawPixels(width, height, __allegro_gl_get_bitmap_color_format(source, 0),
<a name="l00588"></a>00588 __allegro_gl_get_bitmap_type(source, 0), data);
<a name="l00589"></a>00589
<a name="l00590"></a>00590 <span class="comment">/* Restore state */</span>
<a name="l00591"></a>00591 glPixelZoom(saved_zoom_x, saved_zoom_y);
<a name="l00592"></a>00592 glPixelStorei(GL_UNPACK_ROW_LENGTH, saved_row_length);
<a name="l00593"></a>00593
<a name="l00594"></a>00594 <span class="keywordflow">if</span> (temp) {
<a name="l00595"></a>00595 destroy_bitmap(temp);
<a name="l00596"></a>00596 }
<a name="l00597"></a>00597 <span class="keywordflow">return</span>;
<a name="l00598"></a>00598 }
<a name="l00599"></a>00599
<a name="l00600"></a>00600
<a name="l00601"></a>00601
<a name="l00602"></a>00602 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_blit_to_memory(
<a name="l00603"></a>00603 <span class="keyword">struct</span> BITMAP *source, <span class="keyword">struct</span> BITMAP *dest,
<a name="l00604"></a>00604 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l00605"></a>00605 {
<a name="l00606"></a>00606 GLint saved_row_length;
<a name="l00607"></a>00607 GLint saved_alignment;
<a name="l00608"></a>00608 GLint saved_pack_invert;
<a name="l00609"></a>00609
<a name="l00610"></a>00610 BITMAP *bmp = NULL;
<a name="l00611"></a>00611
<a name="l00612"></a>00612 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_blit_to_memory\n"</span>);
<a name="l00613"></a>00613
<a name="l00614"></a>00614 BITMAP_BLIT_CLIP(source, dest, source_x, source_y, dest_x, dest_y,
<a name="l00615"></a>00615 width, height);
<a name="l00616"></a>00616
<a name="l00617"></a>00617 <span class="keywordflow">if</span> (is_sub_bitmap(source)) {
<a name="l00618"></a>00618 source_x += source->x_ofs;
<a name="l00619"></a>00619 source_y += source->y_ofs;
<a name="l00620"></a>00620 }
<a name="l00621"></a>00621 <span class="keywordflow">if</span> (is_sub_bitmap(dest)) {
<a name="l00622"></a>00622 dest_x += dest->x_ofs;
<a name="l00623"></a>00623 dest_y += dest->y_ofs;
<a name="l00624"></a>00624 }
<a name="l00625"></a>00625
<a name="l00626"></a>00626 <span class="keywordflow">if</span> (width <= 0 || height <= 0) {
<a name="l00627"></a>00627 <span class="keywordflow">return</span>;
<a name="l00628"></a>00628 }
<a name="l00629"></a>00629
<a name="l00630"></a>00630 <span class="comment">/* Note that glPixelZoom doesn't affect reads -- so we have to do a flip.</span>
<a name="l00631"></a>00631 <span class="comment"> * We can do this by reading into a temporary bitmap then flipping that to</span>
<a name="l00632"></a>00632 <span class="comment"> * the destination, -OR- use the GL_MESA_pack_invert extension to do it</span>
<a name="l00633"></a>00633 <span class="comment"> * for us.</span>
<a name="l00634"></a>00634 <span class="comment"> *</span>
<a name="l00635"></a>00635 <span class="comment"> * If GL_EXT_packed_pixels isn't supported, then we can't use</span>
<a name="l00636"></a>00636 <span class="comment"> * MESA_pack_invert on 16-bpp bitmaps or less.</span>
<a name="l00637"></a>00637 <span class="comment"> */</span>
<a name="l00638"></a>00638
<a name="l00639"></a>00639 <span class="keywordflow">if</span> ( !<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.MESA_pack_invert
<a name="l00640"></a>00640 || (!<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.EXT_packed_pixels
<a name="l00641"></a>00641 && bitmap_color_depth(dest) < 24)) {
<a name="l00642"></a>00642
<a name="l00643"></a>00643 <span class="comment">/* XXX <rohannessian> Bitmap format should be the same as the source</span>
<a name="l00644"></a>00644 <span class="comment"> * dest bitmap!</span>
<a name="l00645"></a>00645 <span class="comment"> */</span>
<a name="l00646"></a>00646 <span class="keywordflow">if</span> ((!<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.EXT_packed_pixels
<a name="l00647"></a>00647 && bitmap_color_depth(dest) < 24)) {
<a name="l00648"></a>00648 bmp = create_bitmap_ex(24, width, height);
<a name="l00649"></a>00649 }
<a name="l00650"></a>00650 <span class="keywordflow">else</span> {
<a name="l00651"></a>00651 bmp = create_bitmap_ex(bitmap_color_depth(dest), width, height);
<a name="l00652"></a>00652 }
<a name="l00653"></a>00653 <span class="keywordflow">if</span> (!bmp)
<a name="l00654"></a>00654 <span class="keywordflow">return</span>;
<a name="l00655"></a>00655 }
<a name="l00656"></a>00656
<a name="l00657"></a>00657 glGetIntegerv(GL_PACK_ROW_LENGTH, &saved_row_length);
<a name="l00658"></a>00658 glGetIntegerv(GL_PACK_ALIGNMENT, &saved_alignment);
<a name="l00659"></a>00659 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
<a name="l00660"></a>00660 glPixelStorei(GL_PACK_ALIGNMENT, 1);
<a name="l00661"></a>00661
<a name="l00662"></a>00662 <span class="keywordflow">if</span> (!<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.MESA_pack_invert) {
<a name="l00663"></a>00663
<a name="l00664"></a>00664 glReadPixels(source_x, source->h - source_y - height, width, height,
<a name="l00665"></a>00665 __allegro_gl_get_bitmap_color_format(bmp, 0),
<a name="l00666"></a>00666 __allegro_gl_get_bitmap_type(bmp, 0), bmp->dat);
<a name="l00667"></a>00667 }
<a name="l00668"></a>00668 <span class="keywordflow">else</span> {
<a name="l00669"></a>00669 glGetIntegerv(GL_PACK_INVERT_MESA, &saved_pack_invert);
<a name="l00670"></a>00670 glPixelStorei(GL_PACK_INVERT_MESA, TRUE);
<a name="l00671"></a>00671 glPixelStorei(GL_PACK_ROW_LENGTH,
<a name="l00672"></a>00672 (dest->line[1] - dest->line[0])
<a name="l00673"></a>00673 / BYTES_PER_PIXEL(dest->vtable->color_depth));
<a name="l00674"></a>00674
<a name="l00675"></a>00675 glReadPixels(source_x, source->h - source_y - height, width, height,
<a name="l00676"></a>00676 __allegro_gl_get_bitmap_color_format(dest, 0),
<a name="l00677"></a>00677 __allegro_gl_get_bitmap_type(dest, 0), dest->line[0]);
<a name="l00678"></a>00678
<a name="l00679"></a>00679 glPixelStorei(GL_PACK_INVERT_MESA, saved_pack_invert);
<a name="l00680"></a>00680 }
<a name="l00681"></a>00681
<a name="l00682"></a>00682 glPixelStorei(GL_PACK_ROW_LENGTH, saved_row_length);
<a name="l00683"></a>00683 glPixelStorei(GL_PACK_ALIGNMENT, saved_alignment);
<a name="l00684"></a>00684
<a name="l00685"></a>00685 <span class="comment">/* Flip image if needed (glPixelZoom doesn't affect reads) */</span>
<a name="l00686"></a>00686 <span class="keywordflow">if</span> (bmp) {
<a name="l00687"></a>00687
<a name="l00688"></a>00688 <span class="keywordtype">int</span> y, dy;
<a name="l00689"></a>00689
<a name="l00690"></a>00690 <span class="keywordflow">for</span> (y = 0, dy = dest_y + height - 1; y < height; y++, dy--) {
<a name="l00691"></a>00691 blit(bmp, dest, 0, y, dest_x, dy, width, 1);
<a name="l00692"></a>00692 }
<a name="l00693"></a>00693
<a name="l00694"></a>00694 destroy_bitmap(bmp);
<a name="l00695"></a>00695 }
<a name="l00696"></a>00696
<a name="l00697"></a>00697 <span class="keywordflow">return</span>;
<a name="l00698"></a>00698 }
<a name="l00699"></a>00699
<a name="l00700"></a>00700
<a name="l00701"></a>00701
<a name="l00702"></a>00702
<a name="l00703"></a>00703 <span class="keywordtype">void</span> allegro_gl_screen_blit_to_self (
<a name="l00704"></a>00704 <span class="keyword">struct</span> BITMAP *source, <span class="keyword">struct</span> BITMAP *dest,
<a name="l00705"></a>00705 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l00706"></a>00706 {
<a name="l00707"></a>00707 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_blit_to_self\n"</span>);
<a name="l00708"></a>00708
<a name="l00709"></a>00709 BITMAP_BLIT_CLIP(source, dest, source_x, source_y, dest_x, dest_y,
<a name="l00710"></a>00710 width, height);
<a name="l00711"></a>00711
<a name="l00712"></a>00712 <span class="keywordflow">if</span> (is_sub_bitmap(source)) {
<a name="l00713"></a>00713 source_x += source->x_ofs;
<a name="l00714"></a>00714 source_y += source->y_ofs;
<a name="l00715"></a>00715 }
<a name="l00716"></a>00716 <span class="keywordflow">if</span> (is_sub_bitmap(dest)) {
<a name="l00717"></a>00717 dest_x += dest->x_ofs;
<a name="l00718"></a>00718 dest_y += dest->y_ofs;
<a name="l00719"></a>00719 }
<a name="l00720"></a>00720
<a name="l00721"></a>00721 <span class="keywordflow">if</span> (width <= 0 || height <= 0) {
<a name="l00722"></a>00722 <span class="keywordflow">return</span>;
<a name="l00723"></a>00723 }
<a name="l00724"></a>00724
<a name="l00725"></a>00725 <span class="comment">/* screen -> screen */</span>
<a name="l00726"></a>00726 <span class="keywordflow">if</span> (is_screen_bitmap(source) && is_screen_bitmap(dest)) {
<a name="l00727"></a>00727 glRasterPos2i(dest_x, dest_y + height - 1);
<a name="l00728"></a>00728 glCopyPixels(source_x, SCREEN_H - source_y - height, width, height,
<a name="l00729"></a>00729 GL_COLOR);
<a name="l00730"></a>00730 }
<a name="l00731"></a>00731 <span class="comment">/* video -> screen */</span>
<a name="l00732"></a>00732 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_screen_bitmap(dest) && is_video_bitmap(source)) {
<a name="l00733"></a>00733 AGL_VIDEO_BITMAP *vid;
<a name="l00734"></a>00734 BITMAP *source_parent = source;
<a name="l00735"></a>00735 GLfloat current_color[4];
<a name="l00736"></a>00736
<a name="l00737"></a>00737 <span class="keywordflow">while</span> (source_parent->id & BMP_ID_SUB) {
<a name="l00738"></a>00738 source_parent = (BITMAP *)source_parent->extra;
<a name="l00739"></a>00739 }
<a name="l00740"></a>00740 vid = source_parent->extra;
<a name="l00741"></a>00741
<a name="l00742"></a>00742 glGetFloatv(GL_CURRENT_COLOR, current_color);
<a name="l00743"></a>00743 glColor4ub(255, 255, 255, 255);
<a name="l00744"></a>00744
<a name="l00745"></a>00745 <span class="keywordflow">while</span> (vid) {
<a name="l00746"></a>00746 <span class="keywordtype">int</span> sx, sy; <span class="comment">/* source coordinates */</span>
<a name="l00747"></a>00747 <span class="keywordtype">int</span> dx, dy; <span class="comment">/* destination coordinates */</span>
<a name="l00748"></a>00748 <span class="keywordtype">int</span> w, h;
<a name="l00749"></a>00749
<a name="l00750"></a>00750 <span class="keywordflow">if</span> (source_x >= vid->x_ofs + vid->memory_copy->w ||
<a name="l00751"></a>00751 source_y >= vid->y_ofs + vid->memory_copy->h ||
<a name="l00752"></a>00752 vid->x_ofs >= source_x + width ||
<a name="l00753"></a>00753 vid->y_ofs >= source_y + height) {
<a name="l00754"></a>00754 vid = vid->next;
<a name="l00755"></a>00755 <span class="keywordflow">continue</span>;
<a name="l00756"></a>00756 }
<a name="l00757"></a>00757
<a name="l00758"></a>00758 sx = MAX(vid->x_ofs, source_x) - vid->x_ofs;
<a name="l00759"></a>00759 w = MIN(vid->x_ofs + vid->memory_copy->w, source_x + width)
<a name="l00760"></a>00760 - vid->x_ofs - sx;
<a name="l00761"></a>00761 sy = MAX(vid->y_ofs, source_y) - vid->y_ofs;
<a name="l00762"></a>00762 h = MIN(vid->y_ofs + vid->memory_copy->h, source_y + height)
<a name="l00763"></a>00763 - vid->y_ofs - sy;
<a name="l00764"></a>00764
<a name="l00765"></a>00765 dx = dest_x + vid->x_ofs + sx - source_x;
<a name="l00766"></a>00766 dy = dest_y + vid->y_ofs + sy - source_y;
<a name="l00767"></a>00767
<a name="l00768"></a>00768 glEnable(vid->target);
<a name="l00769"></a>00769 glBindTexture(vid->target, vid->tex);
<a name="l00770"></a>00770
<a name="l00771"></a>00771 <span class="keywordflow">if</span> (vid->target == GL_TEXTURE_2D) {
<a name="l00772"></a>00772 <span class="keywordtype">float</span> tx = sx / (float)vid->memory_copy->w;
<a name="l00773"></a>00773 <span class="keywordtype">float</span> ty = sy / (<span class="keywordtype">float</span>)vid->memory_copy->h;
<a name="l00774"></a>00774 <span class="keywordtype">float</span> tw = w / (float)vid->memory_copy->w;
<a name="l00775"></a>00775 <span class="keywordtype">float</span> th = h / (<span class="keywordtype">float</span>)vid->memory_copy->h;
<a name="l00776"></a>00776
<a name="l00777"></a>00777 glBegin(GL_QUADS);
<a name="l00778"></a>00778 glTexCoord2f(tx, ty);
<a name="l00779"></a>00779 glVertex2f(dx, dy);
<a name="l00780"></a>00780 glTexCoord2f(tx, ty + th);
<a name="l00781"></a>00781 glVertex2f(dx, dy + h);
<a name="l00782"></a>00782 glTexCoord2f(tx + tw, ty + th);
<a name="l00783"></a>00783 glVertex2f(dx + w, dy + h);
<a name="l00784"></a>00784 glTexCoord2f(tx + tw, ty);
<a name="l00785"></a>00785 glVertex2f(dx + w, dy);
<a name="l00786"></a>00786 glEnd();
<a name="l00787"></a>00787 }
<a name="l00788"></a>00788 <span class="keywordflow">else</span> {
<a name="l00789"></a>00789 glBegin(GL_QUADS);
<a name="l00790"></a>00790 glTexCoord2i(sx, sy);
<a name="l00791"></a>00791 glVertex2f(dx, dy);
<a name="l00792"></a>00792 glTexCoord2i(sx, sy + h);
<a name="l00793"></a>00793 glVertex2f(dx, dy + h);
<a name="l00794"></a>00794 glTexCoord2i(sx + w, sy + h);
<a name="l00795"></a>00795 glVertex2f(dx + w, dy + h);
<a name="l00796"></a>00796 glTexCoord2i(sx + w, sy);
<a name="l00797"></a>00797 glVertex2f(dx + w, dy);
<a name="l00798"></a>00798 glEnd();
<a name="l00799"></a>00799 }
<a name="l00800"></a>00800
<a name="l00801"></a>00801 glBindTexture(vid->target, 0);
<a name="l00802"></a>00802 glDisable(vid->target);
<a name="l00803"></a>00803
<a name="l00804"></a>00804 vid = vid->next;
<a name="l00805"></a>00805 }
<a name="l00806"></a>00806
<a name="l00807"></a>00807 glColor4fv(current_color);
<a name="l00808"></a>00808 }
<a name="l00809"></a>00809 <span class="comment">/* screen -> video */</span>
<a name="l00810"></a>00810 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_screen_bitmap(source) && is_video_bitmap(dest)) {
<a name="l00811"></a>00811
<a name="l00812"></a>00812 AGL_VIDEO_BITMAP *vid;
<a name="l00813"></a>00813 BITMAP *source_parent = source;
<a name="l00814"></a>00814
<a name="l00815"></a>00815 <span class="keywordflow">while</span> (source_parent->id & BMP_ID_SUB) {
<a name="l00816"></a>00816 source_parent = (BITMAP *)source_parent->extra;
<a name="l00817"></a>00817 }
<a name="l00818"></a>00818
<a name="l00819"></a>00819 vid = dest->extra;
<a name="l00820"></a>00820
<a name="l00821"></a>00821 <span class="keywordflow">while</span> (vid) {
<a name="l00822"></a>00822 <span class="keywordtype">int</span> sx, sy; <span class="comment">/* source coordinates */</span>
<a name="l00823"></a>00823 <span class="keywordtype">int</span> dx, dy; <span class="comment">/* destination coordinates */</span>
<a name="l00824"></a>00824 <span class="keywordtype">int</span> w, h;
<a name="l00825"></a>00825
<a name="l00826"></a>00826 <span class="keywordflow">if</span> (dest_x >= vid->x_ofs + vid->memory_copy->w ||
<a name="l00827"></a>00827 dest_y >= vid->y_ofs + vid->memory_copy->h ||
<a name="l00828"></a>00828 vid->x_ofs >= dest_x + width ||
<a name="l00829"></a>00829 vid->y_ofs >= dest_y + height) {
<a name="l00830"></a>00830 vid = vid->next;
<a name="l00831"></a>00831 <span class="keywordflow">continue</span>;
<a name="l00832"></a>00832 }
<a name="l00833"></a>00833
<a name="l00834"></a>00834 dx = MAX(vid->x_ofs, dest_x) - vid->x_ofs;
<a name="l00835"></a>00835 w = MIN(vid->x_ofs + vid->memory_copy->w, dest_x + width)
<a name="l00836"></a>00836 - vid->x_ofs - dx;
<a name="l00837"></a>00837 dy = MAX(vid->y_ofs, dest_y) - vid->y_ofs;
<a name="l00838"></a>00838 h = MIN(vid->y_ofs + vid->memory_copy->h, dest_y + height)
<a name="l00839"></a>00839 - vid->y_ofs - dy;
<a name="l00840"></a>00840
<a name="l00841"></a>00841 sx = source_x + vid->x_ofs + dx - dest_x;
<a name="l00842"></a>00842 sy = source_y + vid->y_ofs + dy - dest_y;
<a name="l00843"></a>00843
<a name="l00844"></a>00844 <span class="comment">/* We cannot use glCopyTexSubImage2D() here because it will flip the image. */</span>
<a name="l00845"></a>00845 allegro_gl_screen_blit_to_memory(source, vid->memory_copy,
<a name="l00846"></a>00846 sx, sy, dx, dy, w, h);
<a name="l00847"></a>00847
<a name="l00848"></a>00848 allegro_gl_video_blit_from_memory(vid->memory_copy, dest, 0, 0,
<a name="l00849"></a>00849 vid->x_ofs, vid->y_ofs, vid->memory_copy->w, vid->memory_copy->h);
<a name="l00850"></a>00850
<a name="l00851"></a>00851 vid = vid->next;
<a name="l00852"></a>00852 }
<a name="l00853"></a>00853 }
<a name="l00854"></a>00854 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_video_bitmap(source) && is_video_bitmap(dest)) {
<a name="l00855"></a>00855 allegro_gl_video_blit_to_self(source, dest, source_x, source_y,
<a name="l00856"></a>00856 dest_x, dest_y, width, height);
<a name="l00857"></a>00857 }
<a name="l00858"></a>00858 }
<a name="l00859"></a>00859
<a name="l00860"></a>00860
<a name="l00861"></a>00861
<a name="l00862"></a>00862 <span class="keywordtype">void</span> allegro_gl_upload_and_display_texture(<span class="keyword">struct</span> BITMAP *source,
<a name="l00863"></a>00863 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height,
<a name="l00864"></a>00864 <span class="keywordtype">int</span> flip_dir, GLint format, GLint type)
<a name="l00865"></a>00865 {
<a name="l00866"></a>00866 <span class="keywordtype">float</span> tx, ty;
<a name="l00867"></a>00867 GLint saved_row_length;
<a name="l00868"></a>00868 <span class="keywordtype">int</span> bytes_per_pixel = BYTES_PER_PIXEL(bitmap_color_depth(source));
<a name="l00869"></a>00869 <span class="keywordtype">int</span> i, j;
<a name="l00870"></a>00870
<a name="l00871"></a>00871 glEnable(GL_ALPHA_TEST);
<a name="l00872"></a>00872 glAlphaFunc(GL_GREATER, 0.0f);
<a name="l00873"></a>00873
<a name="l00874"></a>00874 glEnable(GL_TEXTURE_2D);
<a name="l00875"></a>00875 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l00876"></a>00876
<a name="l00877"></a>00877 glGetIntegerv(GL_UNPACK_ROW_LENGTH, &saved_row_length);
<a name="l00878"></a>00878 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l00879"></a>00879
<a name="l00880"></a>00880 glPixelStorei(GL_UNPACK_ROW_LENGTH,
<a name="l00881"></a>00881 (source->line[1] - source->line[0]) / bytes_per_pixel);
<a name="l00882"></a>00882
<a name="l00883"></a>00883 <span class="keywordflow">for</span> (i = 0; i <= abs(width) / 256; i++) {
<a name="l00884"></a>00884 <span class="keywordflow">for</span> (j = 0; j <= abs(height) / 256; j++) {
<a name="l00885"></a>00885
<a name="l00886"></a>00886 <span class="keywordtype">void</span> *data = source->line[source_y + j * 256]
<a name="l00887"></a>00887 + (source_x + i * 256) * bytes_per_pixel;
<a name="l00888"></a>00888 <span class="keywordtype">int</span> w = abs(width) - i * 256;
<a name="l00889"></a>00889 <span class="keywordtype">int</span> h = abs(height) - j * 256;
<a name="l00890"></a>00890 <span class="keywordtype">int</span> dx = dest_x + i * 256;
<a name="l00891"></a>00891 <span class="keywordtype">int</span> dy = dest_y + j * 256;
<a name="l00892"></a>00892
<a name="l00893"></a>00893 w = (w & -256) ? 256 : w;
<a name="l00894"></a>00894 h = (h & -256) ? 256 : h;
<a name="l00895"></a>00895
<a name="l00896"></a>00896 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format, type, data);
<a name="l00897"></a>00897
<a name="l00898"></a>00898 tx = (float)w / 256.;
<a name="l00899"></a>00899 ty = (float)h / 256.;
<a name="l00900"></a>00900
<a name="l00901"></a>00901 <span class="keywordflow">if</span> (flip_dir & AGL_H_FLIP) {
<a name="l00902"></a>00902 dx = 2*dest_x + width - dx;
<a name="l00903"></a>00903 w = -w;
<a name="l00904"></a>00904 }
<a name="l00905"></a>00905
<a name="l00906"></a>00906 <span class="keywordflow">if</span> (flip_dir & AGL_V_FLIP) {
<a name="l00907"></a>00907 dy = 2*dest_y + height - dy;
<a name="l00908"></a>00908 h = -h;
<a name="l00909"></a>00909 }
<a name="l00910"></a>00910
<a name="l00911"></a>00911 <span class="keywordflow">if</span> (width < 0) w = -w;
<a name="l00912"></a>00912 <span class="keywordflow">if</span> (height < 0) h = -h;
<a name="l00913"></a>00913
<a name="l00914"></a>00914 glBegin(GL_QUADS);
<a name="l00915"></a>00915 glTexCoord2f(0., 0.);
<a name="l00916"></a>00916 glVertex2i(dx, dy);
<a name="l00917"></a>00917 glTexCoord2f(0., ty);
<a name="l00918"></a>00918 glVertex2i(dx, dy + h);
<a name="l00919"></a>00919 glTexCoord2f(tx, ty);
<a name="l00920"></a>00920 glVertex2i(dx + w, dy + h);
<a name="l00921"></a>00921 glTexCoord2f(tx, 0.);
<a name="l00922"></a>00922 glVertex2i(dx + w, dy);
<a name="l00923"></a>00923 glEnd();
<a name="l00924"></a>00924 }
<a name="l00925"></a>00925 }
<a name="l00926"></a>00926
<a name="l00927"></a>00927 <span class="comment">/* Restore state */</span>
<a name="l00928"></a>00928 glPixelStorei(GL_UNPACK_ROW_LENGTH, saved_row_length);
<a name="l00929"></a>00929 glBindTexture(GL_TEXTURE_2D, 0);
<a name="l00930"></a>00930 glDisable(GL_TEXTURE_2D);
<a name="l00931"></a>00931 glDisable(GL_ALPHA_TEST);
<a name="l00932"></a>00932
<a name="l00933"></a>00933 <span class="keywordflow">return</span>;
<a name="l00934"></a>00934 }
<a name="l00935"></a>00935
<a name="l00936"></a>00936
<a name="l00937"></a>00937
<a name="l00938"></a>00938 <span class="keyword">static</span> <span class="keywordtype">void</span> do_screen_masked_blit_standard(GLint format, GLint type, <span class="keyword">struct</span> BITMAP *temp, <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height, <span class="keywordtype">int</span> flip_dir, <span class="keywordtype">int</span> blit_type)
<a name="l00939"></a>00939 {
<a name="l00940"></a>00940 glPushAttrib(GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT);
<a name="l00941"></a>00941
<a name="l00942"></a>00942 <span class="keywordflow">if</span> (blit_type & AGL_NO_ROTATION) {
<a name="l00943"></a>00943 GLint saved_row_length;
<a name="l00944"></a>00944 <span class="keywordtype">float</span> dx = dest_x, dy = dest_y;
<a name="l00945"></a>00945 GLfloat zoom_x, zoom_y, old_zoom_x, old_zoom_y;
<a name="l00946"></a>00946
<a name="l00947"></a>00947 glEnable(GL_ALPHA_TEST);
<a name="l00948"></a>00948 glAlphaFunc(GL_GREATER, 0.0f);
<a name="l00949"></a>00949
<a name="l00950"></a>00950 glGetIntegerv(GL_UNPACK_ROW_LENGTH, &saved_row_length);
<a name="l00951"></a>00951 glGetFloatv(GL_ZOOM_X, &old_zoom_x);
<a name="l00952"></a>00952 glGetFloatv(GL_ZOOM_Y, &old_zoom_y);
<a name="l00953"></a>00953
<a name="l00954"></a>00954 <span class="keywordflow">if</span> (flip_dir & AGL_H_FLIP) {
<a name="l00955"></a>00955 zoom_x = -1.0f;
<a name="l00956"></a>00956 <span class="comment">/* Without the -0.5 below, we get an invalid position,</span>
<a name="l00957"></a>00957 <span class="comment"> * and the operation is ignored by OpenGL. */</span>
<a name="l00958"></a>00958 dx += abs(width) - 0.5;
<a name="l00959"></a>00959 }
<a name="l00960"></a>00960 <span class="keywordflow">else</span> {
<a name="l00961"></a>00961 zoom_x = (float) width / abs(width);
<a name="l00962"></a>00962 }
<a name="l00963"></a>00963
<a name="l00964"></a>00964 <span class="keywordflow">if</span> (flip_dir & AGL_V_FLIP) {
<a name="l00965"></a>00965 zoom_y = 1.0f;
<a name="l00966"></a>00966 dy += abs(height) - 0.5;
<a name="l00967"></a>00967 }
<a name="l00968"></a>00968 <span class="keywordflow">else</span> {
<a name="l00969"></a>00969 zoom_y = -1.0f * width / abs(width);
<a name="l00970"></a>00970 }
<a name="l00971"></a>00971
<a name="l00972"></a>00972 glRasterPos2f(dx, dy);
<a name="l00973"></a>00973 glPixelZoom(zoom_x, zoom_y);
<a name="l00974"></a>00974 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l00975"></a>00975 glPixelStorei(GL_UNPACK_ROW_LENGTH,
<a name="l00976"></a>00976 (temp->line[1] - temp->line[0])
<a name="l00977"></a>00977 / BYTES_PER_PIXEL(bitmap_color_depth(temp)));
<a name="l00978"></a>00978
<a name="l00979"></a>00979 glDrawPixels(abs(width), abs(height), format, type, temp->line[0]);
<a name="l00980"></a>00980
<a name="l00981"></a>00981 glPixelStorei(GL_UNPACK_ROW_LENGTH, saved_row_length);
<a name="l00982"></a>00982 glPixelZoom(old_zoom_x, old_zoom_y);
<a name="l00983"></a>00983 }
<a name="l00984"></a>00984 <span class="keywordflow">else</span> {
<a name="l00985"></a>00985 allegro_gl_upload_and_display_texture(temp, 0, 0, dest_x, dest_y, width, height,
<a name="l00986"></a>00986 flip_dir, format, type);
<a name="l00987"></a>00987 }
<a name="l00988"></a>00988
<a name="l00989"></a>00989 glPopAttrib();
<a name="l00990"></a>00990 }
<a name="l00991"></a>00991
<a name="l00992"></a>00992
<a name="l00993"></a>00993
<a name="l00994"></a>00994 <span class="keyword">static</span> <span class="keywordtype">void</span> screen_masked_blit_standard(<span class="keyword">struct</span> BITMAP *source,
<a name="l00995"></a>00995 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height,
<a name="l00996"></a>00996 <span class="keywordtype">int</span> flip_dir, <span class="keywordtype">int</span> blit_type)
<a name="l00997"></a>00997 {
<a name="l00998"></a>00998 BITMAP *temp = NULL;
<a name="l00999"></a>00999
<a name="l01000"></a>01000 GLint format, type;
<a name="l01001"></a>01001
<a name="l01002"></a>01002 format = __allegro_gl_get_bitmap_color_format(source, <a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>);
<a name="l01003"></a>01003 type = __allegro_gl_get_bitmap_type(source, <a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>);
<a name="l01004"></a>01004
<a name="l01005"></a>01005 temp = __allegro_gl_munge_bitmap(<a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>, source,
<a name="l01006"></a>01006 source_x, source_y, abs(width), abs(height),
<a name="l01007"></a>01007 &type, &format);
<a name="l01008"></a>01008
<a name="l01009"></a>01009 <span class="keywordflow">if</span> (temp) {
<a name="l01010"></a>01010 source = temp;
<a name="l01011"></a>01011 }
<a name="l01012"></a>01012
<a name="l01013"></a>01013 do_screen_masked_blit_standard(format, type, source, source_x, source_y,
<a name="l01014"></a>01014 dest_x, dest_y, width, height, flip_dir, blit_type);
<a name="l01015"></a>01015
<a name="l01016"></a>01016 <span class="keywordflow">if</span> (temp) {
<a name="l01017"></a>01017 destroy_bitmap(temp);
<a name="l01018"></a>01018 }
<a name="l01019"></a>01019
<a name="l01020"></a>01020 <span class="keywordflow">return</span>;
<a name="l01021"></a>01021 }
<a name="l01022"></a>01022
<a name="l01023"></a>01023
<a name="l01024"></a>01024
<a name="l01025"></a>01025 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_nv_register_combiners(BITMAP *bmp)
<a name="l01026"></a>01026 {
<a name="l01027"></a>01027 GLfloat mask_color[4];
<a name="l01028"></a>01028 <span class="keywordtype">int</span> depth = bitmap_color_depth(bmp);
<a name="l01029"></a>01029 <span class="keywordtype">int</span> color = bitmap_mask_color(bmp);
<a name="l01030"></a>01030
<a name="l01031"></a>01031 mask_color[0] = getr_depth(depth, color) / 255.;
<a name="l01032"></a>01032 mask_color[1] = getg_depth(depth, color) / 255.;
<a name="l01033"></a>01033 mask_color[2] = getb_depth(depth, color) / 255.;
<a name="l01034"></a>01034 mask_color[3] = 0.;
<a name="l01035"></a>01035
<a name="l01036"></a>01036 glCombinerParameterfvNV(GL_CONSTANT_COLOR0_NV, mask_color);
<a name="l01037"></a>01037 glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 2);
<a name="l01038"></a>01038 glEnable(GL_REGISTER_COMBINERS_NV);
<a name="l01039"></a>01039
<a name="l01040"></a>01040 glCombinerInputNV(GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV,
<a name="l01041"></a>01041 GL_TEXTURE0_ARB, GL_SIGNED_IDENTITY_NV, GL_RGB);
<a name="l01042"></a>01042 glCombinerInputNV(GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV,
<a name="l01043"></a>01043 GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB);
<a name="l01044"></a>01044 glCombinerInputNV(GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_C_NV,
<a name="l01045"></a>01045 GL_CONSTANT_COLOR0_NV, GL_SIGNED_IDENTITY_NV, GL_RGB);
<a name="l01046"></a>01046 glCombinerInputNV(GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_D_NV,
<a name="l01047"></a>01047 GL_ZERO, GL_EXPAND_NORMAL_NV, GL_RGB);
<a name="l01048"></a>01048 glCombinerOutputNV(GL_COMBINER0_NV, GL_RGB, GL_DISCARD_NV,
<a name="l01049"></a>01049 GL_DISCARD_NV, GL_SPARE0_NV, GL_NONE, GL_NONE,
<a name="l01050"></a>01050 GL_FALSE, GL_FALSE, GL_FALSE);
<a name="l01051"></a>01051
<a name="l01052"></a>01052 glCombinerInputNV(GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV,
<a name="l01053"></a>01053 GL_SPARE0_NV, GL_SIGNED_IDENTITY_NV, GL_RGB);
<a name="l01054"></a>01054 glCombinerInputNV(GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV,
<a name="l01055"></a>01055 GL_SPARE0_NV, GL_SIGNED_IDENTITY_NV, GL_RGB);
<a name="l01056"></a>01056 glCombinerOutputNV(GL_COMBINER1_NV, GL_RGB, GL_SPARE1_NV,
<a name="l01057"></a>01057 GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE,
<a name="l01058"></a>01058 GL_TRUE, GL_FALSE, GL_FALSE);
<a name="l01059"></a>01059
<a name="l01060"></a>01060 glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
<a name="l01061"></a>01061 GL_UNSIGNED_IDENTITY_NV, GL_RGB);
<a name="l01062"></a>01062 glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_ZERO,
<a name="l01063"></a>01063 GL_UNSIGNED_INVERT_NV, GL_RGB);
<a name="l01064"></a>01064 glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_ZERO,
<a name="l01065"></a>01065 GL_UNSIGNED_IDENTITY_NV, GL_RGB);
<a name="l01066"></a>01066 glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO,
<a name="l01067"></a>01067 GL_UNSIGNED_IDENTITY_NV, GL_RGB);
<a name="l01068"></a>01068 glFinalCombinerInputNV(GL_VARIABLE_G_NV, GL_SPARE1_NV,
<a name="l01069"></a>01069 GL_UNSIGNED_IDENTITY_NV, GL_BLUE);
<a name="l01070"></a>01070
<a name="l01071"></a>01071 <span class="keywordflow">return</span>;
<a name="l01072"></a>01072 }
<a name="l01073"></a>01073
<a name="l01074"></a>01074
<a name="l01075"></a>01075
<a name="l01076"></a>01076 <span class="keyword">static</span> <span class="keywordtype">void</span> screen_masked_blit_nv_register(<span class="keyword">struct</span> BITMAP *source,
<a name="l01077"></a>01077 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height,
<a name="l01078"></a>01078 <span class="keywordtype">int</span> flip_dir, <span class="keywordtype">int</span> blit_type)
<a name="l01079"></a>01079 {
<a name="l01080"></a>01080 BITMAP *temp = NULL;
<a name="l01081"></a>01081 GLint type = __allegro_gl_get_bitmap_type(source, 0);
<a name="l01082"></a>01082 GLint format = __allegro_gl_get_bitmap_color_format(source, 0);
<a name="l01083"></a>01083
<a name="l01084"></a>01084 <span class="keywordflow">if</span> (type == -1) {
<a name="l01085"></a>01085 temp = create_bitmap_ex(24, width, height);
<a name="l01086"></a>01086 <span class="keywordflow">if</span> (!temp) {
<a name="l01087"></a>01087 <span class="keywordflow">return</span>;
<a name="l01088"></a>01088 }
<a name="l01089"></a>01089 blit(source, temp, source_x, source_y, 0, 0, width, height);
<a name="l01090"></a>01090 source = temp;
<a name="l01091"></a>01091 source_x = 0;
<a name="l01092"></a>01092 source_y = 0;
<a name="l01093"></a>01093
<a name="l01094"></a>01094 type = __allegro_gl_get_bitmap_type(source, 0);
<a name="l01095"></a>01095 format = __allegro_gl_get_bitmap_color_format(source, 0);
<a name="l01096"></a>01096 }
<a name="l01097"></a>01097
<a name="l01098"></a>01098 glPushAttrib(GL_TEXTURE_BIT | GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT);
<a name="l01099"></a>01099 __allegro_gl_init_nv_register_combiners(source);
<a name="l01100"></a>01100
<a name="l01101"></a>01101 allegro_gl_upload_and_display_texture(source, source_x, source_y, dest_x, dest_y,
<a name="l01102"></a>01102 width, height, flip_dir, format, type);
<a name="l01103"></a>01103
<a name="l01104"></a>01104 glPopAttrib();
<a name="l01105"></a>01105
<a name="l01106"></a>01106 <span class="keywordflow">if</span> (temp) {
<a name="l01107"></a>01107 destroy_bitmap(temp);
<a name="l01108"></a>01108 }
<a name="l01109"></a>01109 <span class="keywordflow">return</span>;
<a name="l01110"></a>01110 }
<a name="l01111"></a>01111
<a name="l01112"></a>01112
<a name="l01113"></a>01113
<a name="l01114"></a>01114 <span class="keyword">static</span> <span class="keywordtype">void</span> __allegro_gl_init_combine_textures(BITMAP *bmp)
<a name="l01115"></a>01115 {
<a name="l01116"></a>01116 GLubyte mask_color[4];
<a name="l01117"></a>01117
<a name="l01118"></a>01118 split_color(bitmap_mask_color(bmp), &mask_color[0], &mask_color[1],
<a name="l01119"></a>01119 &mask_color[2], &mask_color[3], bitmap_color_depth(bmp));
<a name="l01120"></a>01120 glColor4ubv(mask_color);
<a name="l01121"></a>01121
<a name="l01122"></a>01122 glActiveTexture(GL_TEXTURE0);
<a name="l01123"></a>01123 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
<a name="l01124"></a>01124 glEnable(GL_TEXTURE_2D);
<a name="l01125"></a>01125 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_ADD_SIGNED_ARB);
<a name="l01126"></a>01126 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
<a name="l01127"></a>01127 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PRIMARY_COLOR);
<a name="l01128"></a>01128 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_ONE_MINUS_SRC_COLOR);
<a name="l01129"></a>01129
<a name="l01130"></a>01130 <span class="comment">/* Dot the result of the subtract with itself. Store it in the alpha </span>
<a name="l01131"></a>01131 <span class="comment"> * component. The alpha should then be 0 if the color fragment was equal to </span>
<a name="l01132"></a>01132 <span class="comment"> * the mask color, or >0 otherwise.</span>
<a name="l01133"></a>01133 <span class="comment"> */</span>
<a name="l01134"></a>01134 glActiveTexture(GL_TEXTURE1);
<a name="l01135"></a>01135 glEnable(GL_TEXTURE_2D);
<a name="l01136"></a>01136 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
<a name="l01137"></a>01137 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_DOT3_RGBA_ARB);
<a name="l01138"></a>01138 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS_ARB);
<a name="l01139"></a>01139 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);
<a name="l01140"></a>01140
<a name="l01141"></a>01141 <span class="comment">/* Put the original RGB value in its place */</span>
<a name="l01142"></a>01142
<a name="l01143"></a>01143 glActiveTexture(GL_TEXTURE2);
<a name="l01144"></a>01144 glEnable(GL_TEXTURE_2D);
<a name="l01145"></a>01145 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
<a name="l01146"></a>01146 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE);
<a name="l01147"></a>01147 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
<a name="l01148"></a>01148 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
<a name="l01149"></a>01149 glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS_ARB);
<a name="l01150"></a>01150
<a name="l01151"></a>01151 glActiveTexture(GL_TEXTURE0);
<a name="l01152"></a>01152
<a name="l01153"></a>01153 <span class="keywordflow">return</span>;
<a name="l01154"></a>01154 }
<a name="l01155"></a>01155
<a name="l01156"></a>01156
<a name="l01157"></a>01157
<a name="l01158"></a>01158 <span class="keyword">static</span> <span class="keywordtype">void</span> screen_masked_blit_combine_tex(<span class="keyword">struct</span> BITMAP *source,
<a name="l01159"></a>01159 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height,
<a name="l01160"></a>01160 <span class="keywordtype">int</span> flip_dir, <span class="keywordtype">int</span> blit_type)
<a name="l01161"></a>01161 {
<a name="l01162"></a>01162 <span class="keywordtype">float</span> tx, ty;
<a name="l01163"></a>01163 BITMAP *temp = NULL;
<a name="l01164"></a>01164 GLint saved_row_length;
<a name="l01165"></a>01165 GLint type = __allegro_gl_get_bitmap_type(source, 0);
<a name="l01166"></a>01166 GLint format = __allegro_gl_get_bitmap_color_format(source, 0);
<a name="l01167"></a>01167 <span class="keywordtype">int</span> bytes_per_pixel;
<a name="l01168"></a>01168 <span class="keywordtype">int</span> i, j;
<a name="l01169"></a>01169 GLfloat current_color[4];
<a name="l01170"></a>01170
<a name="l01171"></a>01171 <span class="keywordflow">if</span> (type == -1) {
<a name="l01172"></a>01172 temp = create_bitmap_ex(24, width, height);
<a name="l01173"></a>01173 <span class="keywordflow">if</span> (!temp)
<a name="l01174"></a>01174 <span class="keywordflow">return</span>;
<a name="l01175"></a>01175 blit(source, temp, source_x, source_y, 0, 0, width, height);
<a name="l01176"></a>01176 source = temp;
<a name="l01177"></a>01177 source_x = 0;
<a name="l01178"></a>01178 source_y = 0;
<a name="l01179"></a>01179
<a name="l01180"></a>01180 type = __allegro_gl_get_bitmap_type(source, 0);
<a name="l01181"></a>01181 format = __allegro_gl_get_bitmap_color_format(source, 0);
<a name="l01182"></a>01182 }
<a name="l01183"></a>01183
<a name="l01184"></a>01184 glEnable(GL_TEXTURE_2D);
<a name="l01185"></a>01185 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l01186"></a>01186
<a name="l01187"></a>01187 glPushAttrib(GL_TEXTURE_BIT | GL_COLOR_BUFFER_BIT | GL_ENABLE_BIT);
<a name="l01188"></a>01188 glGetFloatv(GL_CURRENT_COLOR, current_color);
<a name="l01189"></a>01189 __allegro_gl_init_combine_textures(source);
<a name="l01190"></a>01190
<a name="l01191"></a>01191 glActiveTexture(GL_TEXTURE0);
<a name="l01192"></a>01192 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l01193"></a>01193 glActiveTexture(GL_TEXTURE1);
<a name="l01194"></a>01194 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l01195"></a>01195 glActiveTexture(GL_TEXTURE2);
<a name="l01196"></a>01196 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l01197"></a>01197 glActiveTexture(GL_TEXTURE0);
<a name="l01198"></a>01198
<a name="l01199"></a>01199 bytes_per_pixel = BYTES_PER_PIXEL(bitmap_color_depth(source));
<a name="l01200"></a>01200
<a name="l01201"></a>01201 glEnable(GL_ALPHA_TEST);
<a name="l01202"></a>01202 glAlphaFunc(GL_GREATER, 0.0f);
<a name="l01203"></a>01203
<a name="l01204"></a>01204 glGetIntegerv(GL_UNPACK_ROW_LENGTH, &saved_row_length);
<a name="l01205"></a>01205 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l01206"></a>01206
<a name="l01207"></a>01207 glPixelStorei(GL_UNPACK_ROW_LENGTH,
<a name="l01208"></a>01208 (source->line[1] - source->line[0]) / bytes_per_pixel);
<a name="l01209"></a>01209
<a name="l01210"></a>01210 <span class="keywordflow">for</span> (i = 0; i <= width / 256; i++) {
<a name="l01211"></a>01211 <span class="keywordflow">for</span> (j = 0; j <= height / 256; j++) {
<a name="l01212"></a>01212
<a name="l01213"></a>01213 <span class="keywordtype">void</span> *data = source->line[source_y + j * 256]
<a name="l01214"></a>01214 + (source_x + i * 256) * bytes_per_pixel;
<a name="l01215"></a>01215 <span class="keywordtype">int</span> w = width - i * 256;
<a name="l01216"></a>01216 <span class="keywordtype">int</span> h = height - j * 256;
<a name="l01217"></a>01217 <span class="keywordtype">int</span> dx = dest_x + i * 256;
<a name="l01218"></a>01218 <span class="keywordtype">int</span> dy = dest_y + j * 256;
<a name="l01219"></a>01219
<a name="l01220"></a>01220 w = (w & -256) ? 256 : w;
<a name="l01221"></a>01221 h = (h & -256) ? 256 : h;
<a name="l01222"></a>01222
<a name="l01223"></a>01223 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, format, type, data);
<a name="l01224"></a>01224
<a name="l01225"></a>01225 tx = (float)w / 256.;
<a name="l01226"></a>01226 ty = (float)h / 256.;
<a name="l01227"></a>01227
<a name="l01228"></a>01228 <span class="keywordflow">if</span> (flip_dir & AGL_H_FLIP) {
<a name="l01229"></a>01229 dx = 2*dest_x + width - dx;
<a name="l01230"></a>01230 w = -w;
<a name="l01231"></a>01231 }
<a name="l01232"></a>01232
<a name="l01233"></a>01233 <span class="keywordflow">if</span> (flip_dir & AGL_V_FLIP) {
<a name="l01234"></a>01234 dy = 2*dest_y + height - dy;
<a name="l01235"></a>01235 h = -h;
<a name="l01236"></a>01236 }
<a name="l01237"></a>01237
<a name="l01238"></a>01238 glBegin(GL_QUADS);
<a name="l01239"></a>01239 glMultiTexCoord2f(GL_TEXTURE0, 0., 0.);
<a name="l01240"></a>01240 glMultiTexCoord2f(GL_TEXTURE1, 0., 0.);
<a name="l01241"></a>01241 glMultiTexCoord2f(GL_TEXTURE2, 0., 0.);
<a name="l01242"></a>01242 glVertex2f(dx, dy);
<a name="l01243"></a>01243 glMultiTexCoord2f(GL_TEXTURE0, 0., ty);
<a name="l01244"></a>01244 glMultiTexCoord2f(GL_TEXTURE1, 0., ty);
<a name="l01245"></a>01245 glMultiTexCoord2f(GL_TEXTURE2, 0., ty);
<a name="l01246"></a>01246 glVertex2f(dx, dy + h);
<a name="l01247"></a>01247 glMultiTexCoord2f(GL_TEXTURE0, tx, ty);
<a name="l01248"></a>01248 glMultiTexCoord2f(GL_TEXTURE1, tx, ty);
<a name="l01249"></a>01249 glMultiTexCoord2f(GL_TEXTURE2, tx, ty);
<a name="l01250"></a>01250 glVertex2f(dx + w, dy + h);
<a name="l01251"></a>01251 glMultiTexCoord2f(GL_TEXTURE0, tx, 0.);
<a name="l01252"></a>01252 glMultiTexCoord2f(GL_TEXTURE1, tx, 0.);
<a name="l01253"></a>01253 glMultiTexCoord2f(GL_TEXTURE2, tx, 0.);
<a name="l01254"></a>01254 glVertex2f(dx + w, dy);
<a name="l01255"></a>01255 glEnd();
<a name="l01256"></a>01256 }
<a name="l01257"></a>01257 }
<a name="l01258"></a>01258
<a name="l01259"></a>01259 <span class="comment">/* Restore state */</span>
<a name="l01260"></a>01260 glPixelStorei(GL_UNPACK_ROW_LENGTH, saved_row_length);
<a name="l01261"></a>01261 glBindTexture(GL_TEXTURE_2D, 0);
<a name="l01262"></a>01262 glDisable(GL_TEXTURE_2D);
<a name="l01263"></a>01263 glPopAttrib();
<a name="l01264"></a>01264 glColor4fv(current_color);
<a name="l01265"></a>01265
<a name="l01266"></a>01266 <span class="keywordflow">if</span> (temp) {
<a name="l01267"></a>01267 destroy_bitmap(temp);
<a name="l01268"></a>01268 }
<a name="l01269"></a>01269
<a name="l01270"></a>01270 <span class="keywordflow">return</span>;
<a name="l01271"></a>01271 }
<a name="l01272"></a>01272
<a name="l01273"></a>01273
<a name="l01274"></a>01274
<a name="l01275"></a>01275 <span class="keywordtype">void</span> do_masked_blit_screen(<span class="keyword">struct</span> BITMAP *source, <span class="keyword">struct</span> BITMAP *dest,
<a name="l01276"></a>01276 <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height,
<a name="l01277"></a>01277 <span class="keywordtype">int</span> flip_dir, <span class="keywordtype">int</span> blit_type)
<a name="l01278"></a>01278 {
<a name="l01279"></a>01279
<a name="l01280"></a>01280 <span class="comment">/* XXX <rohannessian> We should merge this clip code with the</span>
<a name="l01281"></a>01281 <span class="comment"> * BITMAP_BLIT_CLIP macro</span>
<a name="l01282"></a>01282 <span class="comment"> */</span>
<a name="l01283"></a>01283
<a name="l01284"></a>01284 <span class="comment">/* Clipping of destination bitmap */</span>
<a name="l01285"></a>01285 <span class="keywordflow">if</span> (dest->clip && (blit_type & AGL_NO_ROTATION)) {
<a name="l01286"></a>01286 <span class="keywordflow">if</span> ((dest_x >= dest->cr) || (dest_y >= dest->cb)
<a name="l01287"></a>01287 || (dest_x + width < dest->cl) || (dest_y + height < dest->ct)) {
<a name="l01288"></a>01288 <span class="keywordflow">return</span>;
<a name="l01289"></a>01289 }
<a name="l01290"></a>01290 <span class="keywordflow">if</span> (flip_dir & AGL_H_FLIP) {
<a name="l01291"></a>01291 <span class="keywordflow">if</span> (dest_x < dest->cl) {
<a name="l01292"></a>01292 width += dest_x - dest->cl;
<a name="l01293"></a>01293 dest_x = dest->cl;
<a name="l01294"></a>01294 }
<a name="l01295"></a>01295 <span class="keywordflow">if</span> (dest_x + width > dest->cr) {
<a name="l01296"></a>01296 source_x += dest_x + width - dest->cr;
<a name="l01297"></a>01297 width = dest->cr - dest_x;
<a name="l01298"></a>01298 }
<a name="l01299"></a>01299 }
<a name="l01300"></a>01300 <span class="keywordflow">else</span> {
<a name="l01301"></a>01301 <span class="keywordflow">if</span> (dest_x < dest->cl) {
<a name="l01302"></a>01302 width += dest_x - dest->cl;
<a name="l01303"></a>01303 source_x -= dest_x - dest->cl;
<a name="l01304"></a>01304 dest_x = dest->cl;
<a name="l01305"></a>01305 }
<a name="l01306"></a>01306 <span class="keywordflow">if</span> (dest_x + width > dest->cr) {
<a name="l01307"></a>01307 width = dest->cr - dest_x;
<a name="l01308"></a>01308 }
<a name="l01309"></a>01309 }
<a name="l01310"></a>01310 <span class="keywordflow">if</span> (flip_dir & AGL_V_FLIP) {
<a name="l01311"></a>01311 <span class="keywordflow">if</span> (dest_y < dest->ct) {
<a name="l01312"></a>01312 height += dest_y - dest->ct;
<a name="l01313"></a>01313 dest_y = dest->ct;
<a name="l01314"></a>01314 }
<a name="l01315"></a>01315 <span class="keywordflow">if</span> (dest_y + height > dest->cb) {
<a name="l01316"></a>01316 source_y += dest_y + height - dest->cb;
<a name="l01317"></a>01317 height = dest->cb - dest_y;
<a name="l01318"></a>01318 }
<a name="l01319"></a>01319 }
<a name="l01320"></a>01320 <span class="keywordflow">else</span> {
<a name="l01321"></a>01321 <span class="keywordflow">if</span> (dest_y < dest->ct) {
<a name="l01322"></a>01322 height += dest_y - dest->ct;
<a name="l01323"></a>01323 source_y -= dest_y - dest->ct;
<a name="l01324"></a>01324 dest_y = dest->ct;
<a name="l01325"></a>01325 }
<a name="l01326"></a>01326 <span class="keywordflow">if</span> (dest_y + height > dest->cb) {
<a name="l01327"></a>01327 height = dest->cb - dest_y;
<a name="l01328"></a>01328 }
<a name="l01329"></a>01329 }
<a name="l01330"></a>01330 }
<a name="l01331"></a>01331
<a name="l01332"></a>01332 <span class="comment">/* Clipping of source bitmap */</span>
<a name="l01333"></a>01333 <span class="keywordflow">if</span> (source->clip && (blit_type & AGL_REGULAR_BMP)) {
<a name="l01334"></a>01334 <span class="keywordflow">if</span> ((source_x >= source->cr) || (source_y >= source->cb)
<a name="l01335"></a>01335 || (source_x + width < source->cl)
<a name="l01336"></a>01336 || (source_y + height < source->ct)) {
<a name="l01337"></a>01337 <span class="keywordflow">return</span>;
<a name="l01338"></a>01338 }
<a name="l01339"></a>01339 <span class="keywordflow">if</span> (source_x < source->cl) {
<a name="l01340"></a>01340 width += source_x - source->cl;
<a name="l01341"></a>01341 dest_x -= source_x - source->cl;
<a name="l01342"></a>01342 source_x = source->cl;
<a name="l01343"></a>01343 }
<a name="l01344"></a>01344 <span class="keywordflow">if</span> (source_y < source->ct) {
<a name="l01345"></a>01345 height += source_y - source->ct;
<a name="l01346"></a>01346 dest_y -= source_y - source->ct;
<a name="l01347"></a>01347 source_y = source->ct;
<a name="l01348"></a>01348 }
<a name="l01349"></a>01349 <span class="keywordflow">if</span> (source_x + width > source->cr) {
<a name="l01350"></a>01350 width = source->cr - source_x;
<a name="l01351"></a>01351 }
<a name="l01352"></a>01352 <span class="keywordflow">if</span> (source_y + height > source->cb) {
<a name="l01353"></a>01353 height = source->cb - source_y;
<a name="l01354"></a>01354 }
<a name="l01355"></a>01355 }
<a name="l01356"></a>01356 <span class="keywordflow">if</span> (is_sub_bitmap(dest)) {
<a name="l01357"></a>01357 dest_x += dest->x_ofs;
<a name="l01358"></a>01358 dest_y += dest->y_ofs;
<a name="l01359"></a>01359 }
<a name="l01360"></a>01360 <span class="keywordflow">if</span> (width <= 0 || height <= 0)
<a name="l01361"></a>01361 <span class="keywordflow">return</span>;
<a name="l01362"></a>01362
<a name="l01363"></a>01363 <span class="comment">/* memory -> screen */</span>
<a name="l01364"></a>01364 <span class="keywordflow">if</span> (!is_video_bitmap(source) && !is_screen_bitmap(source)) {
<a name="l01365"></a>01365
<a name="l01366"></a>01366 __allegro_gl_driver->screen_masked_blit(source, source_x, source_y,
<a name="l01367"></a>01367 dest_x, dest_y, width, height, flip_dir, blit_type);
<a name="l01368"></a>01368 }
<a name="l01369"></a>01369 <span class="comment">/* video -> screen */</span>
<a name="l01370"></a>01370 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_video_bitmap(source)) {
<a name="l01371"></a>01371 AGL_VIDEO_BITMAP *vid;
<a name="l01372"></a>01372 BITMAP *source_parent = source;
<a name="l01373"></a>01373
<a name="l01374"></a>01374 <span class="keywordtype">int</span> use_combiners = 0;
<a name="l01375"></a>01375
<a name="l01376"></a>01376 <span class="comment">/* Special combiner paths */</span>
<a name="l01377"></a>01377 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.NV_register_combiners
<a name="l01378"></a>01378 || allegro_gl_info.num_texture_units >= 3) {
<a name="l01379"></a>01379
<a name="l01380"></a>01380 use_combiners = 1;
<a name="l01381"></a>01381
<a name="l01382"></a>01382 glPushAttrib(GL_ENABLE_BIT | GL_TEXTURE_BIT | GL_COLOR_BUFFER_BIT);
<a name="l01383"></a>01383
<a name="l01384"></a>01384 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.NV_register_combiners) {
<a name="l01385"></a>01385 __allegro_gl_init_nv_register_combiners(source);
<a name="l01386"></a>01386 }
<a name="l01387"></a>01387 <span class="keywordflow">else</span> {
<a name="l01388"></a>01388 __allegro_gl_init_combine_textures(source);
<a name="l01389"></a>01389 }
<a name="l01390"></a>01390
<a name="l01391"></a>01391 glEnable(GL_ALPHA_TEST);
<a name="l01392"></a>01392 glAlphaFunc(GL_GREATER, 0.0f);
<a name="l01393"></a>01393 }
<a name="l01394"></a>01394
<a name="l01395"></a>01395 <span class="keywordflow">while</span> (source_parent->id & BMP_ID_SUB) {
<a name="l01396"></a>01396 source_parent = (BITMAP *)source_parent->extra;
<a name="l01397"></a>01397 }
<a name="l01398"></a>01398 vid = source_parent->extra;
<a name="l01399"></a>01399
<a name="l01400"></a>01400 <span class="keywordflow">while</span> (vid) {
<a name="l01401"></a>01401 <span class="keywordtype">int</span> sx, sy; <span class="comment">/* source coordinates */</span>
<a name="l01402"></a>01402 <span class="keywordtype">int</span> dx, dy; <span class="comment">/* destination coordinates */</span>
<a name="l01403"></a>01403 <span class="keywordtype">int</span> w, h;
<a name="l01404"></a>01404
<a name="l01405"></a>01405 <span class="keywordflow">if</span> (source_x >= vid->x_ofs + vid->memory_copy->w ||
<a name="l01406"></a>01406 source_y >= vid->y_ofs + vid->memory_copy->h ||
<a name="l01407"></a>01407 vid->x_ofs >= source_x + width ||
<a name="l01408"></a>01408 vid->y_ofs >= source_y + height) {
<a name="l01409"></a>01409 vid = vid->next;
<a name="l01410"></a>01410 <span class="keywordflow">continue</span>;
<a name="l01411"></a>01411 }
<a name="l01412"></a>01412
<a name="l01413"></a>01413 sx = MAX (vid->x_ofs, source_x) - vid->x_ofs;
<a name="l01414"></a>01414 w = MIN (vid->x_ofs + vid->memory_copy->w, source_x + width)
<a name="l01415"></a>01415 - vid->x_ofs - sx;
<a name="l01416"></a>01416 sy = MAX (vid->y_ofs, source_y) - vid->y_ofs;
<a name="l01417"></a>01417 h = MIN (vid->y_ofs + vid->memory_copy->h, source_y + height)
<a name="l01418"></a>01418 - vid->y_ofs - sy;
<a name="l01419"></a>01419
<a name="l01420"></a>01420 dx = dest_x + vid->x_ofs + sx - source_x;
<a name="l01421"></a>01421 dy = dest_y + vid->y_ofs + sy - source_y;
<a name="l01422"></a>01422
<a name="l01423"></a>01423 <span class="keywordflow">if</span> (flip_dir & AGL_H_FLIP) {
<a name="l01424"></a>01424 dx = 2*dest_x + width - dx;
<a name="l01425"></a>01425 w = -w;
<a name="l01426"></a>01426 }
<a name="l01427"></a>01427
<a name="l01428"></a>01428 <span class="keywordflow">if</span> (flip_dir & AGL_V_FLIP) {
<a name="l01429"></a>01429 dy = 2*dest_y + height - dy;
<a name="l01430"></a>01430 h = -h;
<a name="l01431"></a>01431 }
<a name="l01432"></a>01432
<a name="l01433"></a>01433 <span class="keywordflow">if</span> (use_combiners) {
<a name="l01434"></a>01434 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.NV_register_combiners) {
<a name="l01435"></a>01435 glEnable(vid->target);
<a name="l01436"></a>01436 glBindTexture(vid->target, vid->tex);
<a name="l01437"></a>01437 glTexParameteri(vid->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
<a name="l01438"></a>01438 glTexParameteri(vid->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
<a name="l01439"></a>01439
<a name="l01440"></a>01440 <span class="keywordflow">if</span> (vid->target == GL_TEXTURE_2D) {
<a name="l01441"></a>01441 <span class="keywordtype">float</span> tx = sx / (float)vid->memory_copy->w;
<a name="l01442"></a>01442 <span class="keywordtype">float</span> ty = sy / (<span class="keywordtype">float</span>)vid->memory_copy->h;
<a name="l01443"></a>01443 <span class="keywordtype">float</span> tw = abs(w) / (float)vid->memory_copy->w;
<a name="l01444"></a>01444 <span class="keywordtype">float</span> th = abs(h) / (float)vid->memory_copy->h;
<a name="l01445"></a>01445
<a name="l01446"></a>01446 glBegin(GL_QUADS);
<a name="l01447"></a>01447 glTexCoord2f(tx, ty);
<a name="l01448"></a>01448 glVertex2f(dx, dy);
<a name="l01449"></a>01449 glTexCoord2f(tx, ty + th);
<a name="l01450"></a>01450 glVertex2f(dx, dy + h);
<a name="l01451"></a>01451 glTexCoord2f(tx + tw, ty + th);
<a name="l01452"></a>01452 glVertex2f(dx + w, dy + h);
<a name="l01453"></a>01453 glTexCoord2f(tx + tw, ty);
<a name="l01454"></a>01454 glVertex2f(dx + w, dy);
<a name="l01455"></a>01455 glEnd();
<a name="l01456"></a>01456 }
<a name="l01457"></a>01457 <span class="keywordflow">else</span> {
<a name="l01458"></a>01458 glBegin(GL_QUADS);
<a name="l01459"></a>01459 glTexCoord2i(sx, sy);
<a name="l01460"></a>01460 glVertex2f(dx, dy);
<a name="l01461"></a>01461 glTexCoord2i(sx, sy + h);
<a name="l01462"></a>01462 glVertex2f(dx, dy + h);
<a name="l01463"></a>01463 glTexCoord2i(sx + w, sy + h);
<a name="l01464"></a>01464 glVertex2f(dx + w, dy + h);
<a name="l01465"></a>01465 glTexCoord2i(sx + w, sy);
<a name="l01466"></a>01466 glVertex2f(dx + w, dy);
<a name="l01467"></a>01467 glEnd();
<a name="l01468"></a>01468 }
<a name="l01469"></a>01469
<a name="l01470"></a>01470 glBindTexture(vid->target, 0);
<a name="l01471"></a>01471 glDisable(vid->target);
<a name="l01472"></a>01472 }
<a name="l01473"></a>01473 <span class="keywordflow">else</span> {
<a name="l01474"></a>01474 glEnable(vid->target);
<a name="l01475"></a>01475 glActiveTexture(GL_TEXTURE0);
<a name="l01476"></a>01476 glBindTexture(vid->target, vid->tex);
<a name="l01477"></a>01477 glActiveTexture(GL_TEXTURE1);
<a name="l01478"></a>01478 glBindTexture(vid->target, vid->tex);
<a name="l01479"></a>01479 glActiveTexture(GL_TEXTURE2);
<a name="l01480"></a>01480 glBindTexture(vid->target, vid->tex);
<a name="l01481"></a>01481 glActiveTexture(GL_TEXTURE0);
<a name="l01482"></a>01482 glTexParameteri(vid->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
<a name="l01483"></a>01483 glTexParameteri(vid->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
<a name="l01484"></a>01484
<a name="l01485"></a>01485 <span class="keywordflow">if</span> (vid->target == GL_TEXTURE_2D) {
<a name="l01486"></a>01486 <span class="keywordtype">float</span> tx, ty, tw, th; <span class="comment">/* texture coordinates */</span>
<a name="l01487"></a>01487 tx = sx / (float)vid->memory_copy->w;
<a name="l01488"></a>01488 ty = sy / (<span class="keywordtype">float</span>)vid->memory_copy->h;
<a name="l01489"></a>01489 tw = abs(w) / (float)vid->memory_copy->w;
<a name="l01490"></a>01490 th = abs(h) / (float)vid->memory_copy->h;
<a name="l01491"></a>01491
<a name="l01492"></a>01492 glBegin(GL_QUADS);
<a name="l01493"></a>01493 glMultiTexCoord2f(GL_TEXTURE0, tx, ty);
<a name="l01494"></a>01494 glMultiTexCoord2f(GL_TEXTURE1, tx, ty);
<a name="l01495"></a>01495 glMultiTexCoord2f(GL_TEXTURE2, tx, ty);
<a name="l01496"></a>01496 glVertex2f(dx, dy);
<a name="l01497"></a>01497 glMultiTexCoord2f(GL_TEXTURE0, tx, ty + th);
<a name="l01498"></a>01498 glMultiTexCoord2f(GL_TEXTURE1, tx, ty + th);
<a name="l01499"></a>01499 glMultiTexCoord2f(GL_TEXTURE2, tx, ty + th);
<a name="l01500"></a>01500 glVertex2f(dx, dy + h);
<a name="l01501"></a>01501 glMultiTexCoord2f(GL_TEXTURE0, tx + tw, ty + th);
<a name="l01502"></a>01502 glMultiTexCoord2f(GL_TEXTURE1, tx + tw, ty + th);
<a name="l01503"></a>01503 glMultiTexCoord2f(GL_TEXTURE2, tx + tw, ty + th);
<a name="l01504"></a>01504 glVertex2f(dx + w, dy + h);
<a name="l01505"></a>01505 glMultiTexCoord2f(GL_TEXTURE0, tx + tw, ty);
<a name="l01506"></a>01506 glMultiTexCoord2f(GL_TEXTURE1, tx + tw, ty);
<a name="l01507"></a>01507 glMultiTexCoord2f(GL_TEXTURE2, tx + tw, ty);
<a name="l01508"></a>01508 glVertex2f(dx + w, dy);
<a name="l01509"></a>01509 glEnd();
<a name="l01510"></a>01510 }
<a name="l01511"></a>01511 <span class="keywordflow">else</span> {
<a name="l01512"></a>01512 glBegin(GL_QUADS);
<a name="l01513"></a>01513 glMultiTexCoord2i(GL_TEXTURE0, dx, dy);
<a name="l01514"></a>01514 glMultiTexCoord2i(GL_TEXTURE1, dx, dy);
<a name="l01515"></a>01515 glMultiTexCoord2i(GL_TEXTURE2, dx, dy);
<a name="l01516"></a>01516 glVertex2f(dx, dy);
<a name="l01517"></a>01517 glMultiTexCoord2i(GL_TEXTURE0, dx, dy + h);
<a name="l01518"></a>01518 glMultiTexCoord2i(GL_TEXTURE1, dx, dy + h);
<a name="l01519"></a>01519 glMultiTexCoord2i(GL_TEXTURE2, dx, dy + h);
<a name="l01520"></a>01520 glVertex2f(dx, dy + h);
<a name="l01521"></a>01521 glMultiTexCoord2i(GL_TEXTURE0, dx + w, dy + h);
<a name="l01522"></a>01522 glMultiTexCoord2i(GL_TEXTURE1, dx + w, dy + h);
<a name="l01523"></a>01523 glMultiTexCoord2i(GL_TEXTURE2, dx + w, dy + h);
<a name="l01524"></a>01524 glVertex2f(dx + w, dy + h);
<a name="l01525"></a>01525 glMultiTexCoord2i(GL_TEXTURE0, dx + w, dy);
<a name="l01526"></a>01526 glMultiTexCoord2i(GL_TEXTURE1, dx + w, dy);
<a name="l01527"></a>01527 glMultiTexCoord2i(GL_TEXTURE2, dx + w, dy);
<a name="l01528"></a>01528 glVertex2f(dx + w, dy);
<a name="l01529"></a>01529 glEnd();
<a name="l01530"></a>01530 }
<a name="l01531"></a>01531
<a name="l01532"></a>01532 glBindTexture(vid->target, 0);
<a name="l01533"></a>01533 glDisable(vid->target);
<a name="l01534"></a>01534 }
<a name="l01535"></a>01535 }
<a name="l01536"></a>01536 <span class="keywordflow">else</span> {
<a name="l01537"></a>01537 screen_masked_blit_standard(vid->memory_copy, sx, sy, dx, dy,
<a name="l01538"></a>01538 w, h, FALSE, blit_type);
<a name="l01539"></a>01539 }
<a name="l01540"></a>01540
<a name="l01541"></a>01541 vid = vid->next;
<a name="l01542"></a>01542 }
<a name="l01543"></a>01543
<a name="l01544"></a>01544 <span class="keywordflow">if</span> (use_combiners) {
<a name="l01545"></a>01545 glPopAttrib();
<a name="l01546"></a>01546 }
<a name="l01547"></a>01547 }
<a name="l01548"></a>01548 <span class="keywordflow">return</span>;
<a name="l01549"></a>01549 }
<a name="l01550"></a>01550
<a name="l01551"></a>01551
<a name="l01552"></a>01552
<a name="l01553"></a>01553 <span class="keyword">static</span> BITMAP* __allegro_gl_convert_rle_sprite(AL_CONST <span class="keyword">struct</span> RLE_SPRITE *sprite, <span class="keywordtype">int</span> trans)
<a name="l01554"></a>01554 {
<a name="l01555"></a>01555 BITMAP *temp = NULL;
<a name="l01556"></a>01556 <span class="keywordtype">int</span> y, x, src_depth;
<a name="l01557"></a>01557 <span class="keywordtype">signed</span> <span class="keywordtype">long</span> src_mask;
<a name="l01558"></a>01558
<a name="l01559"></a>01559 <span class="preprocessor"> #define DRAW_RLE_8888(bits) \</span>
<a name="l01560"></a>01560 <span class="preprocessor"> { \</span>
<a name="l01561"></a>01561 <span class="preprocessor"> for (y = 0; y < sprite->h; y++) { \</span>
<a name="l01562"></a>01562 <span class="preprocessor"> signed long c = *s++; \</span>
<a name="l01563"></a>01563 <span class="preprocessor"> for (x = 0; x < sprite->w;) { \</span>
<a name="l01564"></a>01564 <span class="preprocessor"> if (c == src_mask) \</span>
<a name="l01565"></a>01565 <span class="preprocessor"> break; \</span>
<a name="l01566"></a>01566 <span class="preprocessor"> if (c > 0) { \</span>
<a name="l01567"></a>01567 <span class="preprocessor"> </span><span class="comment">/* Run of solid pixels */</span> \
<a name="l01568"></a>01568 for (c--; c>=0; c--) { \
<a name="l01569"></a>01569 unsigned long col = *s++; \
<a name="l01570"></a>01570 if (bits == 32 && trans) \
<a name="l01571"></a>01571 _putpixel32(temp, x++, y, makeacol32(getr32(col), getg32(col), getb32(col), geta32(col))); \
<a name="l01572"></a>01572 else \
<a name="l01573"></a>01573 _putpixel32(temp, x++, y, makeacol32(getr##bits(col), getg##bits(col), getb##bits(col), 255)); \
<a name="l01574"></a>01574 } \
<a name="l01575"></a>01575 } \
<a name="l01576"></a>01576 else { \
<a name="l01577"></a>01577 <span class="comment">/* Run of transparent pixels */</span> \
<a name="l01578"></a>01578 hline(temp, x, y, x-c+1, 0); \
<a name="l01579"></a>01579 x -= c; \
<a name="l01580"></a>01580 } \
<a name="l01581"></a>01581 c = *s++; \
<a name="l01582"></a>01582 } \
<a name="l01583"></a>01583 } \
<a name="l01584"></a>01584 }
<a name="l01585"></a>01585
<a name="l01586"></a>01586 src_depth = sprite->color_depth;
<a name="l01587"></a>01587 <span class="keywordflow">if</span> (src_depth == 8)
<a name="l01588"></a>01588 src_mask = 0;
<a name="l01589"></a>01589 <span class="keywordflow">else</span>
<a name="l01590"></a>01590 src_mask = makecol_depth(src_depth, 255, 0, 255);
<a name="l01591"></a>01591
<a name="l01592"></a>01592 temp = create_bitmap_ex(32, sprite->w, sprite->h);
<a name="l01593"></a>01593 <span class="keywordflow">if</span> (!temp) <span class="keywordflow">return</span> NULL;
<a name="l01594"></a>01594
<a name="l01595"></a>01595 <span class="comment">/* RGBA 8888 */</span>
<a name="l01596"></a>01596 <span class="keywordflow">switch</span>(src_depth) {
<a name="l01597"></a>01597 <span class="keywordflow">case</span> 8:
<a name="l01598"></a>01598 {
<a name="l01599"></a>01599 <span class="keywordtype">signed</span> <span class="keywordtype">char</span> *s = (<span class="keywordtype">signed</span> <span class="keywordtype">char</span>*)sprite->dat;
<a name="l01600"></a>01600 DRAW_RLE_8888(8);
<a name="l01601"></a>01601 <span class="keywordflow">break</span>;
<a name="l01602"></a>01602 }
<a name="l01603"></a>01603 <span class="keywordflow">case</span> 15:
<a name="l01604"></a>01604 {
<a name="l01605"></a>01605 int16_t *s = (int16_t*)sprite->dat;
<a name="l01606"></a>01606 DRAW_RLE_8888(15);
<a name="l01607"></a>01607 <span class="keywordflow">break</span>;
<a name="l01608"></a>01608 }
<a name="l01609"></a>01609 <span class="keywordflow">case</span> 16:
<a name="l01610"></a>01610 {
<a name="l01611"></a>01611 int16_t *s = (int16_t*)sprite->dat;
<a name="l01612"></a>01612 DRAW_RLE_8888(16);
<a name="l01613"></a>01613 <span class="keywordflow">break</span>;
<a name="l01614"></a>01614 }
<a name="l01615"></a>01615 <span class="keywordflow">case</span> 24:
<a name="l01616"></a>01616 {
<a name="l01617"></a>01617 int32_t *s = (int32_t*)sprite->dat;
<a name="l01618"></a>01618 DRAW_RLE_8888(24);
<a name="l01619"></a>01619 <span class="keywordflow">break</span>;
<a name="l01620"></a>01620 }
<a name="l01621"></a>01621 <span class="keywordflow">case</span> 32:
<a name="l01622"></a>01622 {
<a name="l01623"></a>01623 int32_t *s = (int32_t*)sprite->dat;
<a name="l01624"></a>01624 DRAW_RLE_8888(32);
<a name="l01625"></a>01625 <span class="keywordflow">break</span>;
<a name="l01626"></a>01626 }
<a name="l01627"></a>01627 }
<a name="l01628"></a>01628
<a name="l01629"></a>01629 <span class="keywordflow">return</span> temp;
<a name="l01630"></a>01630 }
<a name="l01631"></a>01631
<a name="l01632"></a>01632
<a name="l01633"></a>01633
<a name="l01634"></a>01634 <span class="keywordtype">void</span> allegro_gl_screen_draw_rle_sprite(<span class="keyword">struct</span> BITMAP *bmp, AL_CONST <span class="keyword">struct</span> RLE_SPRITE *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01635"></a>01635 {
<a name="l01636"></a>01636 BITMAP *temp = NULL, *temp2 = NULL;
<a name="l01637"></a>01637 <span class="keywordtype">int</span> source_x = 0, source_y = 0;
<a name="l01638"></a>01638 <span class="keywordtype">int</span> width = sprite->w, height = sprite->h;
<a name="l01639"></a>01639
<a name="l01640"></a>01640 temp = __allegro_gl_convert_rle_sprite(sprite, FALSE);
<a name="l01641"></a>01641 <span class="keywordflow">if</span> (!temp)
<a name="l01642"></a>01642 <span class="keywordflow">return</span>;
<a name="l01643"></a>01643
<a name="l01644"></a>01644 BITMAP_BLIT_CLIP(temp, bmp, source_x, source_y, x, y, width, height);
<a name="l01645"></a>01645
<a name="l01646"></a>01646 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l01647"></a>01647 x += bmp->x_ofs;
<a name="l01648"></a>01648 y += bmp->y_ofs;
<a name="l01649"></a>01649 }
<a name="l01650"></a>01650
<a name="l01651"></a>01651 <span class="keywordflow">if</span> (width <= 0 || height <= 0) {
<a name="l01652"></a>01652 destroy_bitmap(temp);
<a name="l01653"></a>01653 <span class="keywordflow">return</span>;
<a name="l01654"></a>01654 }
<a name="l01655"></a>01655
<a name="l01656"></a>01656 temp2 = create_sub_bitmap(temp, source_x, source_y, width, height);
<a name="l01657"></a>01657 <span class="keywordflow">if</span> (!temp2) {
<a name="l01658"></a>01658 destroy_bitmap(temp);
<a name="l01659"></a>01659 <span class="keywordflow">return</span>;
<a name="l01660"></a>01660 }
<a name="l01661"></a>01661
<a name="l01662"></a>01662 do_screen_masked_blit_standard(GL_RGBA,
<a name="l01663"></a>01663 __allegro_gl_get_bitmap_type(temp2, <a class="code" href="group__texture.html#gaba184d573c65f33b35d1d57936607d08" title="Generate an alpha channel for this texture, based on the Allegro mask color.">AGL_TEXTURE_MASKED</a>), temp2,
<a name="l01664"></a>01664 0, 0, x, y, width, height, FALSE, AGL_NO_ROTATION);
<a name="l01665"></a>01665
<a name="l01666"></a>01666 destroy_bitmap(temp2);
<a name="l01667"></a>01667 destroy_bitmap(temp);
<a name="l01668"></a>01668 }
<a name="l01669"></a>01669
<a name="l01670"></a>01670
<a name="l01671"></a>01671 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_trans_rgba_rle_sprite(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01672"></a>01672 AL_CONST <span class="keyword">struct</span> RLE_SPRITE *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y) {
<a name="l01673"></a>01673 BITMAP *temp = NULL, *temp2 = NULL;
<a name="l01674"></a>01674 <span class="keywordtype">int</span> source_x = 0, source_y = 0;
<a name="l01675"></a>01675 <span class="keywordtype">int</span> width = sprite->w, height = sprite->h;
<a name="l01676"></a>01676
<a name="l01677"></a>01677 temp = __allegro_gl_convert_rle_sprite(sprite, TRUE);
<a name="l01678"></a>01678 <span class="keywordflow">if</span> (!temp)
<a name="l01679"></a>01679 <span class="keywordflow">return</span>;
<a name="l01680"></a>01680
<a name="l01681"></a>01681 BITMAP_BLIT_CLIP(temp, bmp, source_x, source_y, x, y, width, height);
<a name="l01682"></a>01682
<a name="l01683"></a>01683 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l01684"></a>01684 x += bmp->x_ofs;
<a name="l01685"></a>01685 y += bmp->y_ofs;
<a name="l01686"></a>01686 }
<a name="l01687"></a>01687
<a name="l01688"></a>01688 <span class="keywordflow">if</span> (width <= 0 || height <= 0) {
<a name="l01689"></a>01689 destroy_bitmap(temp);
<a name="l01690"></a>01690 <span class="keywordflow">return</span>;
<a name="l01691"></a>01691 }
<a name="l01692"></a>01692
<a name="l01693"></a>01693 temp2 = create_sub_bitmap(temp, source_x, source_y, width, height);
<a name="l01694"></a>01694 <span class="keywordflow">if</span> (!temp2) {
<a name="l01695"></a>01695 destroy_bitmap(temp);
<a name="l01696"></a>01696 <span class="keywordflow">return</span>;
<a name="l01697"></a>01697 }
<a name="l01698"></a>01698
<a name="l01699"></a>01699 <span class="keywordflow">if</span> (__allegro_gl_blit_operation == AGL_OP_LOGIC_OP)
<a name="l01700"></a>01700 glEnable(GL_COLOR_LOGIC_OP);
<a name="l01701"></a>01701 <span class="keywordflow">else</span>
<a name="l01702"></a>01702 glEnable(GL_BLEND);
<a name="l01703"></a>01703
<a name="l01704"></a>01704 allegro_gl_upload_and_display_texture(temp2, 0, 0, x, y, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE);
<a name="l01705"></a>01705
<a name="l01706"></a>01706 <span class="keywordflow">if</span> (__allegro_gl_blit_operation == AGL_OP_LOGIC_OP)
<a name="l01707"></a>01707 glDisable(GL_COLOR_LOGIC_OP);
<a name="l01708"></a>01708 <span class="keywordflow">else</span>
<a name="l01709"></a>01709 glDisable(GL_BLEND);
<a name="l01710"></a>01710
<a name="l01711"></a>01711 destroy_bitmap(temp2);
<a name="l01712"></a>01712 destroy_bitmap(temp);
<a name="l01713"></a>01713 }
<a name="l01714"></a>01714
<a name="l01715"></a>01715
<a name="l01716"></a>01716
<a name="l01717"></a>01717 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_masked_blit(<span class="keyword">struct</span> BITMAP *source,
<a name="l01718"></a>01718 <span class="keyword">struct</span> BITMAP *dest, <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y,
<a name="l01719"></a>01719 <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l01720"></a>01720 {
<a name="l01721"></a>01721 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_masked_blit\n"</span>);
<a name="l01722"></a>01722 do_masked_blit_screen(source, dest, source_x, source_y, dest_x, dest_y,
<a name="l01723"></a>01723 width, height, FALSE, AGL_REGULAR_BMP | AGL_NO_ROTATION);
<a name="l01724"></a>01724 }
<a name="l01725"></a>01725
<a name="l01726"></a>01726
<a name="l01727"></a>01727
<a name="l01728"></a>01728 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_sprite(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01729"></a>01729 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01730"></a>01730 {
<a name="l01731"></a>01731 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_sprite\n"</span>);
<a name="l01732"></a>01732 do_masked_blit_screen(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h,
<a name="l01733"></a>01733 FALSE, AGL_NO_ROTATION);
<a name="l01734"></a>01734 }
<a name="l01735"></a>01735
<a name="l01736"></a>01736
<a name="l01737"></a>01737
<a name="l01738"></a>01738 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_sprite_v_flip(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01739"></a>01739 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01740"></a>01740 {
<a name="l01741"></a>01741 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_sprite_v_flip\n"</span>);
<a name="l01742"></a>01742 do_masked_blit_screen(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h,
<a name="l01743"></a>01743 AGL_V_FLIP, AGL_NO_ROTATION);
<a name="l01744"></a>01744 }
<a name="l01745"></a>01745
<a name="l01746"></a>01746
<a name="l01747"></a>01747
<a name="l01748"></a>01748 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_sprite_h_flip(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01749"></a>01749 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01750"></a>01750 {
<a name="l01751"></a>01751 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_sprite_h_flip\n"</span>);
<a name="l01752"></a>01752 do_masked_blit_screen(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h,
<a name="l01753"></a>01753 AGL_H_FLIP, AGL_NO_ROTATION);
<a name="l01754"></a>01754 }
<a name="l01755"></a>01755
<a name="l01756"></a>01756
<a name="l01757"></a>01757
<a name="l01758"></a>01758 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_sprite_vh_flip(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01759"></a>01759 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l01760"></a>01760 {
<a name="l01761"></a>01761 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_sprite_vh_flip\n"</span>);
<a name="l01762"></a>01762 do_masked_blit_screen(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h,
<a name="l01763"></a>01763 AGL_V_FLIP | AGL_H_FLIP, AGL_NO_ROTATION);
<a name="l01764"></a>01764 }
<a name="l01765"></a>01765
<a name="l01766"></a>01766
<a name="l01767"></a>01767
<a name="l01768"></a>01768 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_pivot_scaled_sprite_flip(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01769"></a>01769 <span class="keyword">struct</span> BITMAP *sprite, fixed x, fixed y, fixed cx, fixed cy, fixed angle,
<a name="l01770"></a>01770 fixed scale, <span class="keywordtype">int</span> v_flip)
<a name="l01771"></a>01771 {
<a name="l01772"></a>01772 <span class="keywordtype">double</span> dscale = fixtof(scale);
<a name="l01773"></a>01773 GLint matrix_mode;
<a name="l01774"></a>01774 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_pivot_scaled_sprite_flip\n"</span>);
<a name="l01775"></a>01775
<a name="l01776"></a>01776 <span class="preprocessor">#define BIN_2_DEG(x) (-(x) * 180.0 / 128)</span>
<a name="l01777"></a>01777 <span class="preprocessor"></span>
<a name="l01778"></a>01778 glGetIntegerv(GL_MATRIX_MODE, &matrix_mode);
<a name="l01779"></a>01779 glMatrixMode(GL_MODELVIEW);
<a name="l01780"></a>01780 glPushMatrix();
<a name="l01781"></a>01781 glTranslated(fixtof(x), fixtof(y), 0.);
<a name="l01782"></a>01782 glRotated(BIN_2_DEG(fixtof(angle)), 0., 0., -1.);
<a name="l01783"></a>01783 glScaled(dscale, dscale, dscale);
<a name="l01784"></a>01784 glTranslated(-fixtof(x+cx), -fixtof(y+cy), 0.);
<a name="l01785"></a>01785
<a name="l01786"></a>01786 do_masked_blit_screen(sprite, bmp, 0, 0, fixtoi(x), fixtoi(y),
<a name="l01787"></a>01787 sprite->w, sprite->h, v_flip ? AGL_V_FLIP : FALSE, FALSE);
<a name="l01788"></a>01788 glPopMatrix();
<a name="l01789"></a>01789 glMatrixMode(matrix_mode);
<a name="l01790"></a>01790
<a name="l01791"></a>01791 <span class="preprocessor">#undef BIN_2_DEG</span>
<a name="l01792"></a>01792 <span class="preprocessor"></span>
<a name="l01793"></a>01793 <span class="keywordflow">return</span>;
<a name="l01794"></a>01794 }
<a name="l01795"></a>01795
<a name="l01796"></a>01796
<a name="l01797"></a>01797
<a name="l01798"></a>01798 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_trans_rgba_sprite(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01799"></a>01799 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y) {
<a name="l01800"></a>01800
<a name="l01801"></a>01801 <span class="keywordflow">if</span> (__allegro_gl_blit_operation == AGL_OP_LOGIC_OP)
<a name="l01802"></a>01802 glEnable(GL_COLOR_LOGIC_OP);
<a name="l01803"></a>01803 <span class="keywordflow">else</span>
<a name="l01804"></a>01804 glEnable(GL_BLEND);
<a name="l01805"></a>01805
<a name="l01806"></a>01806 <span class="comment">/* video -> screen */</span>
<a name="l01807"></a>01807 <span class="keywordflow">if</span> (is_video_bitmap(sprite)) {
<a name="l01808"></a>01808 allegro_gl_screen_blit_to_self(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h);
<a name="l01809"></a>01809 }
<a name="l01810"></a>01810 <span class="comment">/* memory -> screen */</span>
<a name="l01811"></a>01811 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (is_memory_bitmap(sprite)) {
<a name="l01812"></a>01812 GLint format = __allegro_gl_get_bitmap_color_format(sprite, <a class="code" href="group__texture.html#ga8cc859eadf1610b424cd9188e716f432" title="Tell AllegroGL that the bitmap had an alpha channel, so it should be preserved when generating the te...">AGL_TEXTURE_HAS_ALPHA</a>);
<a name="l01813"></a>01813 GLint type = __allegro_gl_get_bitmap_type(sprite, 0);
<a name="l01814"></a>01814 allegro_gl_upload_and_display_texture(sprite, 0, 0, x, y, sprite->w, sprite->h, 0, format, type);
<a name="l01815"></a>01815 }
<a name="l01816"></a>01816
<a name="l01817"></a>01817 <span class="keywordflow">if</span> (__allegro_gl_blit_operation == AGL_OP_LOGIC_OP)
<a name="l01818"></a>01818 glDisable(GL_COLOR_LOGIC_OP);
<a name="l01819"></a>01819 <span class="keywordflow">else</span>
<a name="l01820"></a>01820 glDisable(GL_BLEND);
<a name="l01821"></a>01821
<a name="l01822"></a>01822 <span class="keywordflow">return</span>;
<a name="l01823"></a>01823 }
<a name="l01824"></a>01824
<a name="l01825"></a>01825
<a name="l01826"></a>01826
<a name="l01827"></a>01827 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_sprite_ex(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01828"></a>01828 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keywordtype">int</span> mode, <span class="keywordtype">int</span> flip)
<a name="l01829"></a>01829 {
<a name="l01830"></a>01830 <span class="keywordtype">int</span> lflip = 0;
<a name="l01831"></a>01831 <span class="keywordtype">int</span> matrix_mode;
<a name="l01832"></a>01832 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_sprite_ex\n"</span>);
<a name="l01833"></a>01833
<a name="l01834"></a>01834 <span class="comment">/* convert allegro's flipping flags to AGL's flags */</span>
<a name="l01835"></a>01835 <span class="keywordflow">switch</span> (flip) {
<a name="l01836"></a>01836 <span class="keywordflow">case</span> DRAW_SPRITE_NO_FLIP:
<a name="l01837"></a>01837 lflip = FALSE;
<a name="l01838"></a>01838 <span class="keywordflow">break</span>;
<a name="l01839"></a>01839 <span class="keywordflow">case</span> DRAW_SPRITE_V_FLIP:
<a name="l01840"></a>01840 lflip = AGL_V_FLIP;
<a name="l01841"></a>01841 <span class="keywordflow">break</span>;
<a name="l01842"></a>01842 <span class="keywordflow">case</span> DRAW_SPRITE_H_FLIP:
<a name="l01843"></a>01843 lflip = AGL_H_FLIP;
<a name="l01844"></a>01844 <span class="keywordflow">break</span>;
<a name="l01845"></a>01845 <span class="keywordflow">case</span> DRAW_SPRITE_VH_FLIP:
<a name="l01846"></a>01846 lflip = AGL_V_FLIP | AGL_H_FLIP;
<a name="l01847"></a>01847 <span class="keywordflow">break</span>;
<a name="l01848"></a>01848 }
<a name="l01849"></a>01849
<a name="l01850"></a>01850 <span class="keywordflow">switch</span> (mode) {
<a name="l01851"></a>01851 <span class="keywordflow">case</span> DRAW_SPRITE_NORMAL:
<a name="l01852"></a>01852 do_masked_blit_screen(sprite, bmp, 0, 0, x, y, sprite->w, sprite->h,
<a name="l01853"></a>01853 lflip, AGL_NO_ROTATION);
<a name="l01854"></a>01854 <span class="keywordflow">break</span>;
<a name="l01855"></a>01855 <span class="keywordflow">case</span> DRAW_SPRITE_TRANS:
<a name="l01856"></a>01856 <span class="keywordflow">if</span> (lflip) {
<a name="l01857"></a>01857 glGetIntegerv(GL_MATRIX_MODE, &matrix_mode);
<a name="l01858"></a>01858 glMatrixMode(GL_MODELVIEW);
<a name="l01859"></a>01859 glPushMatrix();
<a name="l01860"></a>01860
<a name="l01861"></a>01861 glTranslatef(x, y, 0.f);
<a name="l01862"></a>01862 glScalef((lflip&AGL_H_FLIP) ? -1 : 1, (lflip&AGL_V_FLIP)? -1 : 1, 1);
<a name="l01863"></a>01863 glTranslatef(-x, -y, 0);
<a name="l01864"></a>01864 glTranslatef((lflip&AGL_H_FLIP) ? -sprite->w : 0,
<a name="l01865"></a>01865 (lflip&AGL_V_FLIP) ? -sprite->h : 0, 0);
<a name="l01866"></a>01866 }
<a name="l01867"></a>01867
<a name="l01868"></a>01868 allegro_gl_screen_draw_trans_rgba_sprite(bmp, sprite, x, y);
<a name="l01869"></a>01869
<a name="l01870"></a>01870 <span class="keywordflow">if</span> (lflip) {
<a name="l01871"></a>01871 glPopMatrix();
<a name="l01872"></a>01872 glMatrixMode(matrix_mode);
<a name="l01873"></a>01873 }
<a name="l01874"></a>01874 <span class="keywordflow">break</span>;
<a name="l01875"></a>01875 <span class="keywordflow">case</span> DRAW_SPRITE_LIT:
<a name="l01876"></a>01876 <span class="comment">/* unsupported */</span>
<a name="l01877"></a>01877 <span class="keywordflow">break</span>;
<a name="l01878"></a>01878 }
<a name="l01879"></a>01879 }
<a name="l01880"></a>01880
<a name="l01881"></a>01881
<a name="l01882"></a>01882
<a name="l01883"></a>01883 <span class="keywordtype">void</span> allegro_gl_screen_draw_glyph_ex(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01884"></a>01884 AL_CONST <span class="keyword">struct</span> FONT_GLYPH *glyph, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y,
<a name="l01885"></a>01885 <span class="keywordtype">int</span> color, <span class="keywordtype">int</span> bg, <span class="keywordtype">int</span> flip)
<a name="l01886"></a>01886 {
<a name="l01887"></a>01887 GLubyte r, g, b, a;
<a name="l01888"></a>01888 <span class="keywordtype">int</span> x_offs = 0;
<a name="l01889"></a>01889 <span class="keywordtype">int</span> i;
<a name="l01890"></a>01890
<a name="l01891"></a>01891 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_glyph_ex\n"</span>);
<a name="l01892"></a>01892
<a name="l01893"></a>01893 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l01894"></a>01894 glPushAttrib(GL_SCISSOR_BIT);
<a name="l01895"></a>01895 glEnable(GL_SCISSOR_TEST);
<a name="l01896"></a>01896 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l01897"></a>01897 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l01898"></a>01898
<a name="l01899"></a>01899 <span class="keywordflow">if</span> (x < bmp->cl) {
<a name="l01900"></a>01900 x_offs -= x - bmp->cl;
<a name="l01901"></a>01901 x = bmp->cl;
<a name="l01902"></a>01902 }
<a name="l01903"></a>01903 }
<a name="l01904"></a>01904 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l01905"></a>01905 x += bmp->x_ofs;
<a name="l01906"></a>01906 y += bmp->y_ofs;
<a name="l01907"></a>01907 }
<a name="l01908"></a>01908
<a name="l01909"></a>01909 <span class="keywordflow">if</span> (bg != -1) {
<a name="l01910"></a>01910 split_color(bg, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l01911"></a>01911 glColor4ub(r, g, b, a);
<a name="l01912"></a>01912 glRecti(x, y, x + glyph->w, y + glyph->h);
<a name="l01913"></a>01913 }
<a name="l01914"></a>01914
<a name="l01915"></a>01915 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l01916"></a>01916 glColor4ub(r, g, b, a);
<a name="l01917"></a>01917 glRasterPos2i(x, y);
<a name="l01918"></a>01918 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l01919"></a>01919 glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
<a name="l01920"></a>01920
<a name="l01921"></a>01921 <span class="keywordflow">if</span> (flip) {
<a name="l01922"></a>01922 <span class="keywordflow">for</span> (i = 0; i < glyph->h; i++) {
<a name="l01923"></a>01923 glBitmap(glyph->w, 1, x_offs, i, 0, 2,
<a name="l01924"></a>01924 glyph->dat + i * ((glyph->w + 7) / 8));
<a name="l01925"></a>01925 }
<a name="l01926"></a>01926 }
<a name="l01927"></a>01927 <span class="keywordflow">else</span> {
<a name="l01928"></a>01928 <span class="keywordflow">for</span> (i = 0; i < glyph->h; i++) {
<a name="l01929"></a>01929 glBitmap(glyph->w, 1, x_offs, i, 0, 0,
<a name="l01930"></a>01930 glyph->dat + i * ((glyph->w + 7) / 8));
<a name="l01931"></a>01931 }
<a name="l01932"></a>01932 }
<a name="l01933"></a>01933
<a name="l01934"></a>01934 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l01935"></a>01935 glPopAttrib();
<a name="l01936"></a>01936 }
<a name="l01937"></a>01937
<a name="l01938"></a>01938 <span class="keywordflow">return</span>;
<a name="l01939"></a>01939 }
<a name="l01940"></a>01940
<a name="l01941"></a>01941
<a name="l01942"></a>01942
<a name="l01943"></a>01943 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_glyph(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01944"></a>01944 AL_CONST <span class="keyword">struct</span> FONT_GLYPH *glyph, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y,
<a name="l01945"></a>01945 <span class="keywordtype">int</span> color, <span class="keywordtype">int</span> bg) {
<a name="l01946"></a>01946 allegro_gl_screen_draw_glyph_ex(bmp, glyph, x, y, color, bg, 0);
<a name="l01947"></a>01947 }
<a name="l01948"></a>01948
<a name="l01949"></a>01949
<a name="l01950"></a>01950
<a name="l01951"></a>01951 <span class="keywordtype">void</span> allegro_gl_screen_draw_color_glyph_ex(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l01952"></a>01952 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keywordtype">int</span> color, <span class="keywordtype">int</span> bg, <span class="keywordtype">int</span> flip)
<a name="l01953"></a>01953 {
<a name="l01954"></a>01954
<a name="l01955"></a>01955 <span class="comment">/* Implementation note: we should try building textures and see how well</span>
<a name="l01956"></a>01956 <span class="comment"> * those work instead of of DrawPixels with a weird I_TO_RGBA mapping.</span>
<a name="l01957"></a>01957 <span class="comment"> */</span>
<a name="l01958"></a>01958 <span class="keyword">static</span> GLfloat red_map[256];
<a name="l01959"></a>01959 <span class="keyword">static</span> GLfloat green_map[256];
<a name="l01960"></a>01960 <span class="keyword">static</span> GLfloat blue_map[256];
<a name="l01961"></a>01961 <span class="keyword">static</span> GLfloat alpha_map[256];
<a name="l01962"></a>01962 GLubyte r, g, b, a;
<a name="l01963"></a>01963 <span class="keywordtype">int</span> i;
<a name="l01964"></a>01964 GLint saved_row_length;
<a name="l01965"></a>01965 GLint width, height;
<a name="l01966"></a>01966 <span class="keywordtype">int</span> sprite_x = 0, sprite_y = 0;
<a name="l01967"></a>01967 <span class="keywordtype">void</span> *data;
<a name="l01968"></a>01968 <span class="keywordtype">int</span> *table;
<a name="l01969"></a>01969
<a name="l01970"></a>01970 width = sprite->w;
<a name="l01971"></a>01971 height = sprite->h;
<a name="l01972"></a>01972
<a name="l01973"></a>01973 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l01974"></a>01974 <span class="keywordflow">if</span> ((x >= bmp->cr) || (y >= bmp->cb) || (x + width < bmp->cl)
<a name="l01975"></a>01975 || (y + height < bmp->ct)) {
<a name="l01976"></a>01976 <span class="keywordflow">return</span>;
<a name="l01977"></a>01977 }
<a name="l01978"></a>01978 <span class="keywordflow">if</span> (x < bmp->cl) {
<a name="l01979"></a>01979 width += x - bmp->cl;
<a name="l01980"></a>01980 sprite_x -= (x - bmp->cl);
<a name="l01981"></a>01981 x = bmp->cl;
<a name="l01982"></a>01982 }
<a name="l01983"></a>01983 <span class="keywordflow">if</span> (y < bmp->ct) {
<a name="l01984"></a>01984 height += y - bmp->ct;
<a name="l01985"></a>01985 sprite_y -= (y - bmp->ct);
<a name="l01986"></a>01986 y = bmp->ct;
<a name="l01987"></a>01987 }
<a name="l01988"></a>01988 <span class="keywordflow">if</span> (x + width > bmp->cr) {
<a name="l01989"></a>01989 width = bmp->cr - x;
<a name="l01990"></a>01990 }
<a name="l01991"></a>01991 <span class="keywordflow">if</span> (y + height > bmp->cb) {
<a name="l01992"></a>01992 height = bmp->cb - y;
<a name="l01993"></a>01993 }
<a name="l01994"></a>01994 }
<a name="l01995"></a>01995 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l01996"></a>01996 x += bmp->x_ofs;
<a name="l01997"></a>01997 y += bmp->y_ofs;
<a name="l01998"></a>01998 }
<a name="l01999"></a>01999
<a name="l02000"></a>02000 data = sprite->line[sprite_y]
<a name="l02001"></a>02001 + sprite_x * BYTES_PER_PIXEL(bitmap_color_depth(sprite));
<a name="l02002"></a>02002
<a name="l02003"></a>02003 <span class="keywordflow">if</span> (bg < 0) {
<a name="l02004"></a>02004 glAlphaFunc(GL_GREATER, 0.0f);
<a name="l02005"></a>02005 glEnable(GL_ALPHA_TEST);
<a name="l02006"></a>02006 alpha_map[0] = 0.;
<a name="l02007"></a>02007 }
<a name="l02008"></a>02008 <span class="keywordflow">else</span> {
<a name="l02009"></a>02009 split_color(bg, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02010"></a>02010 red_map[0] = r / 255.;
<a name="l02011"></a>02011 green_map[0] = g / 255.;
<a name="l02012"></a>02012 blue_map[0] = b / 255.;
<a name="l02013"></a>02013 alpha_map[0] = 1.;
<a name="l02014"></a>02014 }
<a name="l02015"></a>02015
<a name="l02016"></a>02016 <span class="keywordflow">if</span> (color < 0) {
<a name="l02017"></a>02017 table = _palette_expansion_table(bitmap_color_depth(bmp));
<a name="l02018"></a>02018
<a name="l02019"></a>02019 <span class="keywordflow">for</span>(i = 1; i < 255; i++) {
<a name="l02020"></a>02020 split_color(table[i], &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02021"></a>02021 red_map[i] = r / 255.;
<a name="l02022"></a>02022 green_map[i] = g / 255.;
<a name="l02023"></a>02023 blue_map[i] = b / 255.;
<a name="l02024"></a>02024 alpha_map[i] = 1.;
<a name="l02025"></a>02025 }
<a name="l02026"></a>02026 }
<a name="l02027"></a>02027 <span class="keywordflow">else</span> {
<a name="l02028"></a>02028 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02029"></a>02029
<a name="l02030"></a>02030 <span class="keywordflow">for</span>(i = 1; i < 255; i++) {
<a name="l02031"></a>02031 red_map[i] = r / 255.;
<a name="l02032"></a>02032 green_map[i] = g / 255.;
<a name="l02033"></a>02033 blue_map[i] = b / 255.;
<a name="l02034"></a>02034 alpha_map[i] = 1.;
<a name="l02035"></a>02035 }
<a name="l02036"></a>02036 }
<a name="l02037"></a>02037
<a name="l02038"></a>02038 glPixelMapfv(GL_PIXEL_MAP_I_TO_R, 256, red_map);
<a name="l02039"></a>02039 glPixelMapfv(GL_PIXEL_MAP_I_TO_G, 256, green_map);
<a name="l02040"></a>02040 glPixelMapfv(GL_PIXEL_MAP_I_TO_B, 256, blue_map);
<a name="l02041"></a>02041 glPixelMapfv(GL_PIXEL_MAP_I_TO_A, 256, alpha_map);
<a name="l02042"></a>02042
<a name="l02043"></a>02043 glRasterPos2i(x, y);
<a name="l02044"></a>02044 glPushAttrib(GL_PIXEL_MODE_BIT);
<a name="l02045"></a>02045 glGetIntegerv(GL_UNPACK_ROW_LENGTH, &saved_row_length);
<a name="l02046"></a>02046
<a name="l02047"></a>02047 glPixelZoom(1.0, flip ? -1.0 : 1.0);
<a name="l02048"></a>02048 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
<a name="l02049"></a>02049 glPixelStorei(GL_UNPACK_ROW_LENGTH, sprite->w);
<a name="l02050"></a>02050 glPixelTransferi(GL_MAP_COLOR, GL_TRUE);
<a name="l02051"></a>02051
<a name="l02052"></a>02052 glDrawPixels(width, height, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, data);
<a name="l02053"></a>02053 glPixelStorei(GL_UNPACK_ROW_LENGTH, saved_row_length);
<a name="l02054"></a>02054 glPopAttrib();
<a name="l02055"></a>02055 <span class="keywordflow">if</span> (bg < 0) {
<a name="l02056"></a>02056 glDisable(GL_ALPHA_TEST);
<a name="l02057"></a>02057 }
<a name="l02058"></a>02058
<a name="l02059"></a>02059 <span class="keywordflow">return</span>;
<a name="l02060"></a>02060 }
<a name="l02061"></a>02061
<a name="l02062"></a>02062
<a name="l02063"></a>02063
<a name="l02064"></a>02064 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_color_glyph(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l02065"></a>02065 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keywordtype">int</span> color, <span class="keywordtype">int</span> bg) {
<a name="l02066"></a>02066 allegro_gl_screen_draw_color_glyph_ex(bmp, sprite, x, y, color, bg, 1);
<a name="l02067"></a>02067 }
<a name="l02068"></a>02068
<a name="l02069"></a>02069
<a name="l02070"></a>02070
<a name="l02071"></a>02071 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_character(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l02072"></a>02072 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keywordtype">int</span> color, <span class="keywordtype">int</span> bg)
<a name="l02073"></a>02073 {
<a name="l02074"></a>02074 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_character\n"</span>);
<a name="l02075"></a>02075 allegro_gl_screen_draw_color_glyph(bmp, sprite, x, y, color, bg);
<a name="l02076"></a>02076 }
<a name="l02077"></a>02077
<a name="l02078"></a>02078
<a name="l02079"></a>02079
<a name="l02080"></a>02080 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_draw_256_sprite(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l02081"></a>02081 <span class="keyword">struct</span> BITMAP *sprite, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)
<a name="l02082"></a>02082 {
<a name="l02083"></a>02083 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_screen_draw_256_sprite\n"</span>);
<a name="l02084"></a>02084 allegro_gl_screen_draw_color_glyph(bmp, sprite, x, y, -1, -1);
<a name="l02085"></a>02085 }
<a name="l02086"></a>02086
<a name="l02087"></a>02087
<a name="l02088"></a>02088
<a name="l02089"></a>02089 <span class="keywordtype">void</span> allegro_gl_screen_clear_to_color(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> color)
<a name="l02090"></a>02090 {
<a name="l02091"></a>02091 <span class="keywordflow">if</span> (__agl_drawing_pattern_tex || bmp->clip) {
<a name="l02092"></a>02092 allegro_gl_screen_rectfill(bmp, 0, 0, bmp->w, bmp->h, color);
<a name="l02093"></a>02093 }
<a name="l02094"></a>02094 <span class="keywordflow">else</span> {
<a name="l02095"></a>02095 GLubyte r, g, b, a;
<a name="l02096"></a>02096 GLfloat old_col[4];
<a name="l02097"></a>02097
<a name="l02098"></a>02098 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02099"></a>02099
<a name="l02100"></a>02100 glGetFloatv(GL_COLOR_CLEAR_VALUE, old_col);
<a name="l02101"></a>02101 glClearColor(((<span class="keywordtype">float</span>) r / 255), ((<span class="keywordtype">float</span>) g / 255), ((<span class="keywordtype">float</span>) b / 255),
<a name="l02102"></a>02102 ((<span class="keywordtype">float</span>) a / 255));
<a name="l02103"></a>02103
<a name="l02104"></a>02104 glClear(GL_COLOR_BUFFER_BIT);
<a name="l02105"></a>02105 glClearColor(old_col[0], old_col[1], old_col[2], old_col[3]);
<a name="l02106"></a>02106 }
<a name="l02107"></a>02107
<a name="l02108"></a>02108 <span class="keywordflow">return</span>;
<a name="l02109"></a>02109 }
<a name="l02110"></a>02110
<a name="l02111"></a>02111
<a name="l02112"></a>02112
<a name="l02113"></a>02113 <span class="comment">/* TODO: Handle concave and self-intersecting. */</span>
<a name="l02114"></a>02114 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_polygon(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> vertices,
<a name="l02115"></a>02115 AL_CONST <span class="keywordtype">int</span> *points, <span class="keywordtype">int</span> color) {
<a name="l02116"></a>02116 GLubyte r, g, b, a;
<a name="l02117"></a>02117 <span class="keywordtype">int</span> i;
<a name="l02118"></a>02118
<a name="l02119"></a>02119 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02120"></a>02120 glColor4ub(r, g, b, a);
<a name="l02121"></a>02121
<a name="l02122"></a>02122 glPushAttrib(GL_SCISSOR_BIT);
<a name="l02123"></a>02123
<a name="l02124"></a>02124 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l02125"></a>02125 glEnable(GL_SCISSOR_TEST);
<a name="l02126"></a>02126 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l02127"></a>02127 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l02128"></a>02128 }
<a name="l02129"></a>02129 <span class="keywordflow">else</span> {
<a name="l02130"></a>02130 glScissor(0, 0, bmp->w, bmp->h);
<a name="l02131"></a>02131 }
<a name="l02132"></a>02132
<a name="l02133"></a>02133 glBegin(GL_POLYGON);
<a name="l02134"></a>02134 <span class="keywordflow">for</span> (i = 0; i < vertices*2-1; i+=2) {
<a name="l02135"></a>02135 SET_TEX_COORDS(points[i], points[i+1]);
<a name="l02136"></a>02136 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l02137"></a>02137 glVertex2f(points[i] + bmp->x_ofs, points[i+1] + bmp->y_ofs);
<a name="l02138"></a>02138 }
<a name="l02139"></a>02139 <span class="keywordflow">else</span> {
<a name="l02140"></a>02140 glVertex2f(points[i], points[i+1]);
<a name="l02141"></a>02141 }
<a name="l02142"></a>02142 }
<a name="l02143"></a>02143 glEnd();
<a name="l02144"></a>02144
<a name="l02145"></a>02145 glPopAttrib();
<a name="l02146"></a>02146 }
<a name="l02147"></a>02147
<a name="l02148"></a>02148
<a name="l02149"></a>02149
<a name="l02150"></a>02150 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_rect(<span class="keyword">struct</span> BITMAP *bmp,
<a name="l02151"></a>02151 <span class="keywordtype">int</span> x1, <span class="keywordtype">int</span> y1, <span class="keywordtype">int</span> x2, <span class="keywordtype">int</span> y2, <span class="keywordtype">int</span> color) {
<a name="l02152"></a>02152 GLubyte r, g, b, a;
<a name="l02153"></a>02153
<a name="l02154"></a>02154 split_color(color, &r, &g, &b, &a, bitmap_color_depth(bmp));
<a name="l02155"></a>02155 glColor4ub(r, g, b, a);
<a name="l02156"></a>02156
<a name="l02157"></a>02157 glPushAttrib(GL_SCISSOR_BIT);
<a name="l02158"></a>02158
<a name="l02159"></a>02159 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l02160"></a>02160 glEnable(GL_SCISSOR_TEST);
<a name="l02161"></a>02161 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l02162"></a>02162 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l02163"></a>02163 }
<a name="l02164"></a>02164 <span class="keywordflow">else</span> {
<a name="l02165"></a>02165 glScissor(0, 0, bmp->w, bmp->h);
<a name="l02166"></a>02166 }
<a name="l02167"></a>02167 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l02168"></a>02168 x1 += bmp->x_ofs;
<a name="l02169"></a>02169 x2 += bmp->x_ofs;
<a name="l02170"></a>02170 y1 += bmp->y_ofs;
<a name="l02171"></a>02171 y2 += bmp->y_ofs;
<a name="l02172"></a>02172 }
<a name="l02173"></a>02173
<a name="l02174"></a>02174 glBegin(GL_LINE_STRIP);
<a name="l02175"></a>02175 glVertex2f(x1, y1);
<a name="l02176"></a>02176 glVertex2f(x2, y1);
<a name="l02177"></a>02177 glVertex2f(x2, y2);
<a name="l02178"></a>02178 glVertex2f(x1, y2);
<a name="l02179"></a>02179 glVertex2f(x1, y1);
<a name="l02180"></a>02180 glEnd();
<a name="l02181"></a>02181
<a name="l02182"></a>02182 glPopAttrib();
<a name="l02183"></a>02183 }
<a name="l02184"></a>02184
<a name="l02185"></a>02185
<a name="l02186"></a>02186
<a name="l02187"></a>02187 <span class="keywordtype">void</span> allegro_gl_screen_polygon3d_f(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02188"></a>02188 <span class="keyword">struct</span> BITMAP *texture, <span class="keywordtype">int</span> vc,
<a name="l02189"></a>02189 V3D_f *vtx[]) {
<a name="l02190"></a>02190 <span class="keywordtype">int</span> i;
<a name="l02191"></a>02191 <span class="keywordtype">int</span> use_z = FALSE;
<a name="l02192"></a>02192
<a name="l02193"></a>02193 <span class="keywordflow">if</span> (type & POLYTYPE_ZBUF) {
<a name="l02194"></a>02194 use_z = TRUE;
<a name="l02195"></a>02195 type &= ~POLYTYPE_ZBUF;
<a name="l02196"></a>02196 }
<a name="l02197"></a>02197
<a name="l02198"></a>02198 <span class="keywordflow">if</span> (type == POLYTYPE_PTEX || type == POLYTYPE_PTEX_TRANS)
<a name="l02199"></a>02199 use_z = TRUE;
<a name="l02200"></a>02200
<a name="l02201"></a>02201 <span class="keywordflow">if</span> (bmp->clip) {
<a name="l02202"></a>02202 glPushAttrib(GL_SCISSOR_BIT);
<a name="l02203"></a>02203 glEnable(GL_SCISSOR_TEST);
<a name="l02204"></a>02204 glScissor(bmp->x_ofs + bmp->cl, bmp->h + bmp->y_ofs - bmp->cb,
<a name="l02205"></a>02205 bmp->cr - bmp->cl, bmp->cb - bmp->ct);
<a name="l02206"></a>02206 }
<a name="l02207"></a>02207 <span class="keywordflow">if</span> (is_sub_bitmap(bmp)) {
<a name="l02208"></a>02208 <span class="keywordflow">for</span> (i = 0; i < vc*2-1; i+=2) {
<a name="l02209"></a>02209 vtx[i] += bmp->x_ofs;
<a name="l02210"></a>02210 vtx[i+1] += bmp->y_ofs;
<a name="l02211"></a>02211 }
<a name="l02212"></a>02212 }
<a name="l02213"></a>02213
<a name="l02214"></a>02214 <span class="keywordflow">if</span> (use_z) {
<a name="l02215"></a>02215 glEnable(GL_DEPTH_TEST);
<a name="l02216"></a>02216 glDepthFunc(GL_LESS);
<a name="l02217"></a>02217 glDepthMask(GL_TRUE);
<a name="l02218"></a>02218 }
<a name="l02219"></a>02219
<a name="l02220"></a>02220 glColor4ub(255, 255, 255, 255);
<a name="l02221"></a>02221
<a name="l02222"></a>02222 <span class="keywordflow">if</span> (type == POLYTYPE_ATEX || type == POLYTYPE_PTEX
<a name="l02223"></a>02223 || type == POLYTYPE_ATEX_TRANS || type == POLYTYPE_PTEX_TRANS) {
<a name="l02224"></a>02224 drawing_mode(DRAW_MODE_COPY_PATTERN, texture, 0, 0);
<a name="l02225"></a>02225 }
<a name="l02226"></a>02226
<a name="l02227"></a>02227 <span class="keywordflow">if</span> (type == POLYTYPE_ATEX_TRANS || type == POLYTYPE_PTEX_TRANS) {
<a name="l02228"></a>02228 glEnable(GL_BLEND);
<a name="l02229"></a>02229 }
<a name="l02230"></a>02230
<a name="l02231"></a>02231 glBegin(GL_POLYGON);
<a name="l02232"></a>02232 <span class="keywordflow">for</span> (i = 0; i < vc; i++) {
<a name="l02233"></a>02233 <span class="keywordflow">if</span> (type == POLYTYPE_FLAT)
<a name="l02234"></a>02234 glColor3ub(getr(vtx[0]->c), getg(vtx[0]->c), getb(vtx[0]->c));
<a name="l02235"></a>02235 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == POLYTYPE_GRGB)
<a name="l02236"></a>02236 glColor3ub(getr24(vtx[i]->c), getg24(vtx[i]->c), getb24(vtx[i]->c));
<a name="l02237"></a>02237 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == POLYTYPE_GCOL)
<a name="l02238"></a>02238 glColor3ub(getr(vtx[i]->c), getg(vtx[i]->c), getb(vtx[i]->c));
<a name="l02239"></a>02239 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type == POLYTYPE_ATEX || type == POLYTYPE_PTEX
<a name="l02240"></a>02240 || type == POLYTYPE_ATEX_TRANS || type == POLYTYPE_PTEX_TRANS) {
<a name="l02241"></a>02241 SET_TEX_COORDS(vtx[i]->u, vtx[i]->v);
<a name="l02242"></a>02242 }
<a name="l02243"></a>02243
<a name="l02244"></a>02244 <span class="keywordflow">if</span> (use_z)
<a name="l02245"></a>02245 glVertex3f(vtx[i]->x, vtx[i]->y, 1.f / vtx[i]->z);
<a name="l02246"></a>02246 <span class="keywordflow">else</span>
<a name="l02247"></a>02247 glVertex2f(vtx[i]->x, vtx[i]->y);
<a name="l02248"></a>02248 }
<a name="l02249"></a>02249 glEnd();
<a name="l02250"></a>02250
<a name="l02251"></a>02251 <span class="keywordflow">if</span> (bmp->clip)
<a name="l02252"></a>02252 glPopAttrib();
<a name="l02253"></a>02253
<a name="l02254"></a>02254 <span class="keywordflow">if</span> (use_z) {
<a name="l02255"></a>02255 glDisable(GL_DEPTH_TEST);
<a name="l02256"></a>02256 glDepthMask(GL_FALSE);
<a name="l02257"></a>02257 }
<a name="l02258"></a>02258
<a name="l02259"></a>02259 <span class="keywordflow">if</span> (type == POLYTYPE_ATEX || type == POLYTYPE_PTEX
<a name="l02260"></a>02260 || type == POLYTYPE_ATEX_TRANS || type == POLYTYPE_PTEX_TRANS) {
<a name="l02261"></a>02261 solid_mode();
<a name="l02262"></a>02262 }
<a name="l02263"></a>02263
<a name="l02264"></a>02264 <span class="keywordflow">if</span> (type == POLYTYPE_ATEX_TRANS || type == POLYTYPE_PTEX_TRANS)
<a name="l02265"></a>02265 glDisable(GL_BLEND);
<a name="l02266"></a>02266 }
<a name="l02267"></a>02267
<a name="l02268"></a>02268
<a name="l02269"></a>02269
<a name="l02270"></a>02270 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_polygon3d(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02271"></a>02271 <span class="keyword">struct</span> BITMAP *texture, <span class="keywordtype">int</span> vc,
<a name="l02272"></a>02272 V3D *vtx[]) {
<a name="l02273"></a>02273 <span class="keywordtype">int</span> i;
<a name="l02274"></a>02274 V3D_f **vtx_f = malloc(vc * <span class="keyword">sizeof</span>(<span class="keyword">struct</span> V3D_f*));
<a name="l02275"></a>02275 <span class="keywordflow">if</span> (!vtx_f)
<a name="l02276"></a>02276 <span class="keywordflow">return</span>;
<a name="l02277"></a>02277
<a name="l02278"></a>02278 <span class="keywordflow">for</span> (i = 0; i < vc; i++) {
<a name="l02279"></a>02279 vtx_f[i] = malloc(<span class="keyword">sizeof</span>(<span class="keyword">struct</span> V3D_f));
<a name="l02280"></a>02280 <span class="keywordflow">if</span> (!vtx_f[i]) {
<a name="l02281"></a>02281 <span class="keywordtype">int</span> k;
<a name="l02282"></a>02282 <span class="keywordflow">for</span> (k = 0; k < i; k++)
<a name="l02283"></a>02283 free(vtx_f[k]);
<a name="l02284"></a>02284 free(vtx_f);
<a name="l02285"></a>02285 <span class="keywordflow">return</span>;
<a name="l02286"></a>02286 }
<a name="l02287"></a>02287 vtx_f[i]->c = vtx[i]->c;
<a name="l02288"></a>02288 vtx_f[i]->u = fixtof(vtx[i]->u);
<a name="l02289"></a>02289 vtx_f[i]->v = fixtof(vtx[i]->v);
<a name="l02290"></a>02290 vtx_f[i]->x = fixtof(vtx[i]->x);
<a name="l02291"></a>02291 vtx_f[i]->y = fixtof(vtx[i]->y);
<a name="l02292"></a>02292 vtx_f[i]->z = fixtof(vtx[i]->z);
<a name="l02293"></a>02293 }
<a name="l02294"></a>02294
<a name="l02295"></a>02295 allegro_gl_screen_polygon3d_f(bmp, type, texture, vc, vtx_f);
<a name="l02296"></a>02296 <span class="keywordflow">for</span> (i = 0; i < vc; i++)
<a name="l02297"></a>02297 free(vtx_f[i]);
<a name="l02298"></a>02298 free(vtx_f);
<a name="l02299"></a>02299 }
<a name="l02300"></a>02300
<a name="l02301"></a>02301
<a name="l02302"></a>02302 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_quad3d_f(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02303"></a>02303 <span class="keyword">struct</span> BITMAP *texture,
<a name="l02304"></a>02304 V3D_f *v1, V3D_f *v2, V3D_f *v3, V3D_f *v4) {
<a name="l02305"></a>02305
<a name="l02306"></a>02306 V3D_f *vtx_f[4];
<a name="l02307"></a>02307 vtx_f[0] = v1;
<a name="l02308"></a>02308 vtx_f[1] = v2;
<a name="l02309"></a>02309 vtx_f[2] = v3;
<a name="l02310"></a>02310 vtx_f[3] = v4;
<a name="l02311"></a>02311
<a name="l02312"></a>02312 allegro_gl_screen_polygon3d_f(bmp, type, texture, 4, vtx_f);
<a name="l02313"></a>02313 }
<a name="l02314"></a>02314
<a name="l02315"></a>02315
<a name="l02316"></a>02316
<a name="l02317"></a>02317 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_quad3d(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02318"></a>02318 <span class="keyword">struct</span> BITMAP *texture, V3D *v1, V3D *v2, V3D *v3, V3D *v4) {
<a name="l02319"></a>02319
<a name="l02320"></a>02320 V3D *vtx[4];
<a name="l02321"></a>02321 vtx[0] = v1;
<a name="l02322"></a>02322 vtx[1] = v2;
<a name="l02323"></a>02323 vtx[2] = v3;
<a name="l02324"></a>02324 vtx[3] = v4;
<a name="l02325"></a>02325
<a name="l02326"></a>02326 allegro_gl_screen_polygon3d(bmp, type, texture, 4, vtx);
<a name="l02327"></a>02327 }
<a name="l02328"></a>02328
<a name="l02329"></a>02329
<a name="l02330"></a>02330
<a name="l02331"></a>02331 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_triangle3d(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02332"></a>02332 <span class="keyword">struct</span> BITMAP *texture,
<a name="l02333"></a>02333 V3D *v1, V3D *v2, V3D *v3) {
<a name="l02334"></a>02334 V3D *vtx[3];
<a name="l02335"></a>02335 vtx[0] = v1;
<a name="l02336"></a>02336 vtx[1] = v2;
<a name="l02337"></a>02337 vtx[2] = v3;
<a name="l02338"></a>02338
<a name="l02339"></a>02339 allegro_gl_screen_polygon3d(bmp, type, texture, 3, vtx);
<a name="l02340"></a>02340 }
<a name="l02341"></a>02341
<a name="l02342"></a>02342
<a name="l02343"></a>02343
<a name="l02344"></a>02344 <span class="keyword">static</span> <span class="keywordtype">void</span> allegro_gl_screen_triangle3d_f(<span class="keyword">struct</span> BITMAP *bmp, <span class="keywordtype">int</span> type,
<a name="l02345"></a>02345 <span class="keyword">struct</span> BITMAP *texture,
<a name="l02346"></a>02346 V3D_f *v1, V3D_f *v2, V3D_f *v3) {
<a name="l02347"></a>02347 V3D_f *vtx_f[3];
<a name="l02348"></a>02348 vtx_f[0] = v1;
<a name="l02349"></a>02349 vtx_f[1] = v2;
<a name="l02350"></a>02350 vtx_f[2] = v3;
<a name="l02351"></a>02351
<a name="l02352"></a>02352 allegro_gl_screen_polygon3d_f(bmp, type, texture, 3, vtx_f);
<a name="l02353"></a>02353 }
<a name="l02354"></a>02354
<a name="l02355"></a>02355
<a name="l02356"></a>02356
<a name="l02357"></a>02357 <span class="keywordtype">void</span> __allegro_gl__glvtable_update_vtable(GFX_VTABLE ** vtable)
<a name="l02358"></a>02358 {
<a name="l02359"></a>02359 <span class="keywordtype">int</span> maskcolor = (*vtable)->mask_color;
<a name="l02360"></a>02360 <span class="keywordtype">int</span> depth = (*vtable)->color_depth;
<a name="l02361"></a>02361
<a name="l02362"></a>02362 AGL_LOG(2, <span class="stringliteral">"glvtable.c:__allegro_gl__glvtable_update_vtable\n"</span>);
<a name="l02363"></a>02363 allegro_gl_screen_vtable.color_depth = depth;
<a name="l02364"></a>02364 <span class="comment">/* makecol_depth is used below instead of the MASK_COLOR_x constants</span>
<a name="l02365"></a>02365 <span class="comment"> * because we may have changed the RGB shift values in order to</span>
<a name="l02366"></a>02366 <span class="comment"> * use the packed pixels extension</span>
<a name="l02367"></a>02367 <span class="comment"> */</span>
<a name="l02368"></a>02368 allegro_gl_screen_vtable.mask_color =
<a name="l02369"></a>02369 makecol_depth(depth, getr(maskcolor), getg(maskcolor), getb(maskcolor));
<a name="l02370"></a>02370
<a name="l02371"></a>02371 *vtable = &allegro_gl_screen_vtable;
<a name="l02372"></a>02372
<a name="l02373"></a>02373 __allegro_gl_driver->screen_masked_blit = screen_masked_blit_standard;
<a name="l02374"></a>02374 <span class="keywordflow">if</span> (<a class="code" href="group__extensions.html#ga7492f6f6acc608789210560ee63e5436" title="List of OpenGL extensions supported by AllegroGL.">allegro_gl_extensions_GL</a>.NV_register_combiners) {
<a name="l02375"></a>02375 __allegro_gl_driver->screen_masked_blit
<a name="l02376"></a>02376 = screen_masked_blit_nv_register;
<a name="l02377"></a>02377 }
<a name="l02378"></a>02378 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (allegro_gl_info.num_texture_units >= 3) {
<a name="l02379"></a>02379 __allegro_gl_driver->screen_masked_blit =
<a name="l02380"></a>02380 screen_masked_blit_combine_tex;
<a name="l02381"></a>02381 }
<a name="l02382"></a>02382 }
<a name="l02383"></a>02383
<a name="l02384"></a>02384
<a name="l02385"></a>02385
<a name="l02386"></a>02386 <span class="comment">/* Saved projection matrix */</span>
<a name="l02387"></a>02387 <span class="keyword">static</span> <span class="keywordtype">double</span> allegro_gl_projection_matrix[16];
<a name="l02388"></a>02388 <span class="keyword">static</span> <span class="keywordtype">double</span> allegro_gl_modelview_matrix[16];
<a name="l02389"></a>02389
<a name="l02390"></a>02390
<a name="l02391"></a>02391
<a name="l02422"></a><a class="code" href="group__allegro.html#ga7ea7ffd9b72d0d0722cbf982b729efdb">02422</a> <span class="keywordtype">void</span> <a class="code" href="group__allegro.html#ga7ea7ffd9b72d0d0722cbf982b729efdb" title="Prepares for Allegro drawing to the screen.">allegro_gl_set_allegro_mode</a>(<span class="keywordtype">void</span>)
<a name="l02423"></a>02423 {
<a name="l02424"></a>02424 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_set_allegro_mode\n"</span>);
<a name="l02425"></a>02425
<a name="l02426"></a>02426 <span class="comment">/* Save the OpenGL state then set it up */</span>
<a name="l02427"></a>02427 glPushAttrib(GL_ENABLE_BIT | GL_TEXTURE_BIT | GL_TRANSFORM_BIT
<a name="l02428"></a>02428 | GL_POINT_BIT | GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
<a name="l02429"></a>02429 glDisable(GL_DEPTH_TEST);
<a name="l02430"></a>02430 glDisable(GL_CULL_FACE);
<a name="l02431"></a>02431 glDisable(GL_FOG);
<a name="l02432"></a>02432 glDisable(GL_LIGHTING);
<a name="l02433"></a>02433 glDisable(GL_BLEND);
<a name="l02434"></a>02434 glDisable(GL_ALPHA_TEST);
<a name="l02435"></a>02435 glDepthMask(GL_FALSE);
<a name="l02436"></a>02436 glEnable(GL_TEXTURE_2D);
<a name="l02437"></a>02437 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
<a name="l02438"></a>02438 glPointSize(1.);
<a name="l02439"></a>02439
<a name="l02440"></a>02440 <span class="comment">/* Create pool texture */</span>
<a name="l02441"></a>02441 <span class="keywordflow">if</span> (!__allegro_gl_pool_texture) {
<a name="l02442"></a>02442 glGenTextures(1, &__allegro_gl_pool_texture);
<a name="l02443"></a>02443 }
<a name="l02444"></a>02444
<a name="l02445"></a>02445 glBindTexture(GL_TEXTURE_2D, __allegro_gl_pool_texture);
<a name="l02446"></a>02446 <span class="comment">/* Create a texture without defining the data */</span>
<a name="l02447"></a>02447 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0,
<a name="l02448"></a>02448 GL_RGBA, GL_UNSIGNED_BYTE, NULL);
<a name="l02449"></a>02449 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
<a name="l02450"></a>02450 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
<a name="l02451"></a>02451
<a name="l02452"></a>02452 glBindTexture(GL_TEXTURE_2D, 0);
<a name="l02453"></a>02453 <a class="code" href="group__allegro.html#gabaf6024e9d196da357aad02c5dc7589f" title="Prepares for Allegro drawing to the screen.">allegro_gl_set_projection</a>();
<a name="l02454"></a>02454
<a name="l02455"></a>02455 <span class="comment">/* For some reason, ATI Rage Pro isn't able to draw correctly without a</span>
<a name="l02456"></a>02456 <span class="comment"> * texture bound. So we bind a dummy 1x1 texture to work around the issue.</span>
<a name="l02457"></a>02457 <span class="comment"> */</span>
<a name="l02458"></a>02458 <span class="keywordflow">if</span> (allegro_gl_info.is_ati_rage_pro) {
<a name="l02459"></a>02459 <span class="keywordflow">if</span> (!__allegro_gl_dummy_texture) {
<a name="l02460"></a>02460 GLubyte tex[4] = {255, 255, 255, 255};
<a name="l02461"></a>02461 glGenTextures(1, &__allegro_gl_dummy_texture);
<a name="l02462"></a>02462 glBindTexture(GL_TEXTURE_2D, __allegro_gl_dummy_texture);
<a name="l02463"></a>02463 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0,
<a name="l02464"></a>02464 GL_RGBA, GL_UNSIGNED_BYTE, tex);
<a name="l02465"></a>02465 }
<a name="l02466"></a>02466 glBindTexture(GL_TEXTURE_2D, __allegro_gl_dummy_texture);
<a name="l02467"></a>02467 }
<a name="l02468"></a>02468 <span class="preprocessor">#ifdef ALLEGRO_MACOSX</span>
<a name="l02469"></a>02469 <span class="preprocessor"></span> <span class="comment">/* MacOSX 10.2.x has a bug: glRasterPos causes a crash (it is used in</span>
<a name="l02470"></a>02470 <span class="comment"> *'blit'). This stops it happening.</span>
<a name="l02471"></a>02471 <span class="comment"> */</span>
<a name="l02472"></a>02472 glBegin(GL_POINTS);
<a name="l02473"></a>02473 glEnd();
<a name="l02474"></a>02474 <span class="preprocessor">#endif</span>
<a name="l02475"></a>02475 <span class="preprocessor"></span>}
<a name="l02476"></a>02476
<a name="l02477"></a>02477
<a name="l02478"></a>02478
<a name="l02491"></a><a class="code" href="group__allegro.html#ga00fbbee541046767114bf9746ceb6f8b">02491</a> <span class="keywordtype">void</span> <a class="code" href="group__allegro.html#ga00fbbee541046767114bf9746ceb6f8b" title="Restores previous OpenGL settings.">allegro_gl_unset_allegro_mode</a>(<span class="keywordtype">void</span>)
<a name="l02492"></a>02492 {
<a name="l02493"></a>02493 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_unset_allegro_mode\n"</span>);
<a name="l02494"></a>02494
<a name="l02495"></a>02495 <span class="keywordflow">switch</span>(allegro_gl_display_info.vidmem_policy) {
<a name="l02496"></a>02496 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga5deef983a0f5b2704746d7945c614b7c" title="Keep internal texture in video memory.">AGL_KEEP</a>:
<a name="l02497"></a>02497 <span class="keywordflow">break</span>;
<a name="l02498"></a>02498 <span class="keywordflow">case</span> <a class="code" href="group__settings.html#ga77a6cb708e52f68f893128db6f20bdea" title="Release video memory occupied by internal texture.">AGL_RELEASE</a>:
<a name="l02499"></a>02499 <span class="keywordflow">if</span> (__allegro_gl_pool_texture) {
<a name="l02500"></a>02500 glDeleteTextures(1, &__allegro_gl_pool_texture);
<a name="l02501"></a>02501 __allegro_gl_pool_texture = 0;
<a name="l02502"></a>02502 }
<a name="l02503"></a>02503 <span class="keywordflow">break</span>;
<a name="l02504"></a>02504 }
<a name="l02505"></a>02505 <a class="code" href="group__allegro.html#ga603f8f3719d02816acdf3dbdcaa1f447" title="Restores previously saved projection.">allegro_gl_unset_projection</a>();
<a name="l02506"></a>02506 glPopAttrib();
<a name="l02507"></a>02507 }
<a name="l02508"></a>02508
<a name="l02509"></a>02509
<a name="l02510"></a>02510
<a name="l02540"></a><a class="code" href="group__allegro.html#gabaf6024e9d196da357aad02c5dc7589f">02540</a> <span class="keywordtype">void</span> <a class="code" href="group__allegro.html#gabaf6024e9d196da357aad02c5dc7589f" title="Prepares for Allegro drawing to the screen.">allegro_gl_set_projection</a>(<span class="keywordtype">void</span>)
<a name="l02541"></a>02541 {
<a name="l02542"></a>02542 GLint v[4];
<a name="l02543"></a>02543 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_set_projection\n"</span>);
<a name="l02544"></a>02544
<a name="l02545"></a>02545 <span class="comment">/* Setup OpenGL matrices */</span>
<a name="l02546"></a>02546 glGetIntegerv(GL_VIEWPORT, &v[0]);
<a name="l02547"></a>02547 glMatrixMode(GL_MODELVIEW);
<a name="l02548"></a>02548 glGetDoublev(GL_MODELVIEW_MATRIX, allegro_gl_modelview_matrix);
<a name="l02549"></a>02549 glLoadIdentity();
<a name="l02550"></a>02550 glMatrixMode(GL_PROJECTION);
<a name="l02551"></a>02551 glGetDoublev(GL_PROJECTION_MATRIX, allegro_gl_projection_matrix);
<a name="l02552"></a>02552 glLoadIdentity();
<a name="l02553"></a>02553 gluOrtho2D(v[0] - 0.325, v[0] + v[2] - 0.325, v[1] + v[3] - 0.325, v[1] - 0.325);
<a name="l02554"></a>02554 }
<a name="l02555"></a>02555
<a name="l02556"></a>02556
<a name="l02557"></a>02557
<a name="l02567"></a><a class="code" href="group__allegro.html#ga603f8f3719d02816acdf3dbdcaa1f447">02567</a> <span class="keywordtype">void</span> <a class="code" href="group__allegro.html#ga603f8f3719d02816acdf3dbdcaa1f447" title="Restores previously saved projection.">allegro_gl_unset_projection</a>(<span class="keywordtype">void</span>)
<a name="l02568"></a>02568 {
<a name="l02569"></a>02569 AGL_LOG(2, <span class="stringliteral">"glvtable.c:allegro_gl_unset_projection\n"</span>);
<a name="l02570"></a>02570 glMatrixMode(GL_PROJECTION);
<a name="l02571"></a>02571 glLoadMatrixd(allegro_gl_projection_matrix);
<a name="l02572"></a>02572 glMatrixMode(GL_MODELVIEW);
<a name="l02573"></a>02573 glLoadMatrixd(allegro_gl_modelview_matrix);
<a name="l02574"></a>02574 }
<a name="l02575"></a>02575
<a name="l02576"></a>02576
<a name="l02577"></a>02577
<a name="l02578"></a>02578 <span class="keywordtype">void</span> allegro_gl_memory_blit_between_formats(<span class="keyword">struct</span> BITMAP *src,
<a name="l02579"></a>02579 <span class="keyword">struct</span> BITMAP *dest, <span class="keywordtype">int</span> source_x, <span class="keywordtype">int</span> source_y, <span class="keywordtype">int</span> dest_x, <span class="keywordtype">int</span> dest_y,
<a name="l02580"></a>02580 <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)
<a name="l02581"></a>02581 {
<a name="l02582"></a>02582 AGL_LOG(2, <span class="stringliteral">"AGL::blit_between_formats\n"</span>);
<a name="l02583"></a>02583
<a name="l02584"></a>02584 <span class="comment">/* screen -> memory */</span>
<a name="l02585"></a>02585 <span class="keywordflow">if</span> (is_screen_bitmap(src)) {
<a name="l02586"></a>02586 allegro_gl_screen_blit_to_memory(src, dest, source_x, source_y,
<a name="l02587"></a>02587 dest_x, dest_y, width, height);
<a name="l02588"></a>02588 <span class="keywordflow">return</span>;
<a name="l02589"></a>02589 }
<a name="l02590"></a>02590
<a name="l02591"></a>02591 <span class="comment">/* video -> memory */</span>
<a name="l02592"></a>02592 <span class="keywordflow">if</span> (is_video_bitmap(src)) {
<a name="l02593"></a>02593 allegro_gl_video_blit_to_memory(src, dest, source_x, source_y,
<a name="l02594"></a>02594 dest_x, dest_y, width, height);
<a name="l02595"></a>02595 <span class="keywordflow">return</span>;
<a name="l02596"></a>02596 }
<a name="l02597"></a>02597
<a name="l02598"></a>02598 <span class="comment">/* memory -> screen */</span>
<a name="l02599"></a>02599 <span class="keywordflow">if</span> (is_screen_bitmap(dest)) {
<a name="l02600"></a>02600 allegro_gl_screen_blit_from_memory(src, dest, source_x, source_y,
<a name="l02601"></a>02601 dest_x, dest_y, width, height);
<a name="l02602"></a>02602 <span class="keywordflow">return</span>;
<a name="l02603"></a>02603 }
<a name="l02604"></a>02604
<a name="l02605"></a>02605 <span class="comment">/* memory -> video */</span>
<a name="l02606"></a>02606 <span class="keywordflow">if</span> (is_video_bitmap(dest)) {
<a name="l02607"></a>02607 allegro_gl_video_blit_from_memory(src, dest, source_x, source_y,
<a name="l02608"></a>02608 dest_x, dest_y, width, height);
<a name="l02609"></a>02609 <span class="keywordflow">return</span>;
<a name="l02610"></a>02610 }
<a name="l02611"></a>02611
<a name="l02612"></a>02612 <span class="keywordflow">switch</span>(bitmap_color_depth(dest)) {
<a name="l02613"></a>02613 <span class="preprocessor"> #ifdef ALLEGRO_COLOR8</span>
<a name="l02614"></a>02614 <span class="preprocessor"></span> <span class="keywordflow">case</span> 8:
<a name="l02615"></a>02615 __blit_between_formats8(src, dest, source_x, source_y,
<a name="l02616"></a>02616 dest_x, dest_y, width, height);
<a name="l02617"></a>02617 <span class="keywordflow">return</span>;
<a name="l02618"></a>02618 <span class="preprocessor"> #endif</span>
<a name="l02619"></a>02619 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR16</span>
<a name="l02620"></a>02620 <span class="preprocessor"></span> <span class="keywordflow">case</span> 15:
<a name="l02621"></a>02621 __blit_between_formats15(src, dest, source_x, source_y,
<a name="l02622"></a>02622 dest_x, dest_y, width, height);
<a name="l02623"></a>02623 <span class="keywordflow">return</span>;
<a name="l02624"></a>02624 <span class="keywordflow">case</span> 16:
<a name="l02625"></a>02625 __blit_between_formats16(src, dest, source_x, source_y,
<a name="l02626"></a>02626 dest_x, dest_y, width, height);
<a name="l02627"></a>02627 <span class="keywordflow">return</span>;
<a name="l02628"></a>02628 <span class="preprocessor"> #endif</span>
<a name="l02629"></a>02629 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR24</span>
<a name="l02630"></a>02630 <span class="preprocessor"></span> <span class="keywordflow">case</span> 24:
<a name="l02631"></a>02631 __blit_between_formats24(src, dest, source_x, source_y,
<a name="l02632"></a>02632 dest_x, dest_y, width, height);
<a name="l02633"></a>02633 <span class="keywordflow">return</span>;
<a name="l02634"></a>02634 <span class="preprocessor"> #endif</span>
<a name="l02635"></a>02635 <span class="preprocessor"></span><span class="preprocessor"> #ifdef ALLEGRO_COLOR32</span>
<a name="l02636"></a>02636 <span class="preprocessor"></span> <span class="keywordflow">case</span> 32:
<a name="l02637"></a>02637 __blit_between_formats32(src, dest, source_x, source_y,
<a name="l02638"></a>02638 dest_x, dest_y, width, height);
<a name="l02639"></a>02639 <span class="keywordflow">return</span>;
<a name="l02640"></a>02640 <span class="preprocessor"> #endif</span>
<a name="l02641"></a>02641 <span class="preprocessor"></span> <span class="keywordflow">default</span>:
<a name="l02642"></a>02642 TRACE(<span class="stringliteral">"--== ERROR ==-- AGL::blit_between_formats : %i -> %i bpp\n"</span>,
<a name="l02643"></a>02643 bitmap_color_depth(src), bitmap_color_depth(dest));
<a name="l02644"></a>02644 <span class="keywordflow">return</span>;
<a name="l02645"></a>02645 }
<a name="l02646"></a>02646 }
<a name="l02647"></a>02647
<a name="l02648"></a>02648
<a name="l02649"></a>02649
<a name="l02650"></a>02650 <span class="keyword">static</span> <span class="keywordtype">void</span> dummy_unwrite_bank(<span class="keywordtype">void</span>)
<a name="l02651"></a>02651 {
<a name="l02652"></a>02652 }
<a name="l02653"></a>02653
<a name="l02654"></a>02654
<a name="l02655"></a>02655
<a name="l02656"></a>02656 <span class="keyword">static</span> GFX_VTABLE allegro_gl_screen_vtable = {
<a name="l02657"></a>02657 0,
<a name="l02658"></a>02658 0,
<a name="l02659"></a>02659 dummy_unwrite_bank, <span class="comment">//void *unwrite_bank;</span>
<a name="l02660"></a>02660 NULL, <span class="comment">//AL_METHOD(void, set_clip, (struct BITMAP *bmp));</span>
<a name="l02661"></a>02661 <a class="code" href="group__glvtable.html#ga702812e50246c61eb9f01fd8aba69325" title="acquire_bitmap(screen) overload.">allegro_gl_screen_acquire</a>,
<a name="l02662"></a>02662 <a class="code" href="group__glvtable.html#ga6c2b0685587a0feafcb194a9a67d6aa9" title="release_bitmap(screen) overload.">allegro_gl_screen_release</a>,
<a name="l02663"></a>02663 NULL, <span class="comment">//AL_METHOD(struct BITMAP *, create_sub_bitmap, (struct BITMAP *parent, int x, int y, int width, int height));</span>
<a name="l02664"></a>02664 NULL, <span class="comment">//AL_METHOD(void, created_sub_bitmap, (struct BITMAP *bmp, struct BITMAP *parent));</span>
<a name="l02665"></a>02665 allegro_gl_screen_getpixel,
<a name="l02666"></a>02666 allegro_gl_screen_putpixel,
<a name="l02667"></a>02667 allegro_gl_screen_vline,
<a name="l02668"></a>02668 allegro_gl_screen_hline,
<a name="l02669"></a>02669 allegro_gl_screen_hline,
<a name="l02670"></a>02670 allegro_gl_screen_line,
<a name="l02671"></a>02671 allegro_gl_screen_line,
<a name="l02672"></a>02672 allegro_gl_screen_rectfill,
<a name="l02673"></a>02673 allegro_gl_screen_triangle,
<a name="l02674"></a>02674 allegro_gl_screen_draw_sprite,
<a name="l02675"></a>02675 allegro_gl_screen_draw_256_sprite,
<a name="l02676"></a>02676 allegro_gl_screen_draw_sprite_v_flip,
<a name="l02677"></a>02677 allegro_gl_screen_draw_sprite_h_flip,
<a name="l02678"></a>02678 allegro_gl_screen_draw_sprite_vh_flip,
<a name="l02679"></a>02679 allegro_gl_screen_draw_trans_rgba_sprite,
<a name="l02680"></a>02680 allegro_gl_screen_draw_trans_rgba_sprite,
<a name="l02681"></a>02681 NULL, <span class="comment">//AL_METHOD(void, draw_lit_sprite, (struct BITMAP *bmp, struct BITMAP *sprite, int x, int y, int color));</span>
<a name="l02682"></a>02682 allegro_gl_screen_draw_rle_sprite,
<a name="l02683"></a>02683 allegro_gl_screen_draw_trans_rgba_rle_sprite,
<a name="l02684"></a>02684 allegro_gl_screen_draw_trans_rgba_rle_sprite,
<a name="l02685"></a>02685 NULL, <span class="comment">//AL_METHOD(void, draw_lit_rle_sprite, (struct BITMAP *bmp, struct RLE_SPRITE *sprite, int x, int y, int color));</span>
<a name="l02686"></a>02686 allegro_gl_screen_draw_character,
<a name="l02687"></a>02687 allegro_gl_screen_draw_glyph,
<a name="l02688"></a>02688 allegro_gl_screen_blit_from_memory,
<a name="l02689"></a>02689 allegro_gl_screen_blit_to_memory,
<a name="l02690"></a>02690 NULL, <span class="comment">//AL_METHOD(void, blit_from_system, (struct BITMAP *source, struct BITMAP *dest, int source_x, int source_y, int dest_x, int dest_y, int width, int height));</span>
<a name="l02691"></a>02691 NULL, <span class="comment">//AL_METHOD(void, blit_to_system, (struct BITMAP *source, struct BITMAP *dest, int source_x, int source_y, int dest_x, int dest_y, int width, int height));</span>
<a name="l02692"></a>02692 allegro_gl_screen_blit_to_self,
<a name="l02693"></a>02693 allegro_gl_screen_blit_to_self, <span class="comment">/* ..._forward */</span>
<a name="l02694"></a>02694 allegro_gl_screen_blit_to_self, <span class="comment">/* ..._backward */</span>
<a name="l02695"></a>02695 allegro_gl_memory_blit_between_formats,
<a name="l02696"></a>02696 allegro_gl_screen_masked_blit,
<a name="l02697"></a>02697 allegro_gl_screen_clear_to_color,
<a name="l02698"></a>02698 allegro_gl_screen_pivot_scaled_sprite_flip,
<a name="l02699"></a>02699 NULL, <span class="comment">//AL_METHOD(void, do_stretch_blit, (struct BITMAP *source, struct BITMAP *dest, int source_x, int source_y, int source_width, int source_height, int dest_x, int dest_y, int dest_width, int dest_height, int masked));</span>
<a name="l02700"></a>02700 NULL, <span class="comment">//AL_METHOD(void, draw_gouraud_sprite, (struct BITMAP *bmp, struct BITMAP *sprite, int x, int y, int c1, int c2, int c3, int c4));</span>
<a name="l02701"></a>02701 NULL, <span class="comment">//AL_METHOD(void, draw_sprite_end, (void));</span>
<a name="l02702"></a>02702 NULL, <span class="comment">//AL_METHOD(void, blit_end, (void));</span>
<a name="l02703"></a>02703 allegro_gl_screen_polygon,
<a name="l02704"></a>02704 allegro_gl_screen_rect,
<a name="l02705"></a>02705 _soft_circle, <span class="comment">//AL_METHOD(void, circle, (struct BITMAP *bmp, int x, int y, int radius, int color));</span>
<a name="l02706"></a>02706 _soft_circlefill, <span class="comment">//AL_METHOD(void, circlefill, (struct BITMAP *bmp, int x, int y, int radius, int color));</span>
<a name="l02707"></a>02707 _soft_ellipse, <span class="comment">//AL_METHOD(void, ellipse, (struct BITMAP *bmp, int x, int y, int rx, int ry, int color));</span>
<a name="l02708"></a>02708 _soft_ellipsefill, <span class="comment">//AL_METHOD(void, ellipsefill, (struct BITMAP *bmp, int x, int y, int rx, int ry, int color));</span>
<a name="l02709"></a>02709 _soft_arc, <span class="comment">//AL_METHOD(void, arc, (struct BITMAP *bmp, int x, int y, fixed ang1, fixed ang2, int r, int color));</span>
<a name="l02710"></a>02710 _soft_spline, <span class="comment">//AL_METHOD(void, spline, (struct BITMAP *bmp, AL_CONST int points[8], int color));</span>
<a name="l02711"></a>02711 _soft_floodfill, <span class="comment">//AL_METHOD(void, floodfill, (struct BITMAP *bmp, int x, int y, int color));</span>
<a name="l02712"></a>02712 allegro_gl_screen_polygon3d,
<a name="l02713"></a>02713 allegro_gl_screen_polygon3d_f,
<a name="l02714"></a>02714 allegro_gl_screen_triangle3d,
<a name="l02715"></a>02715 allegro_gl_screen_triangle3d_f,
<a name="l02716"></a>02716 allegro_gl_screen_quad3d,
<a name="l02717"></a>02717 allegro_gl_screen_quad3d_f,
<a name="l02718"></a>02718 allegro_gl_screen_draw_sprite_ex
<a name="l02719"></a>02719 };
<a name="l02720"></a>02720
</pre></div></div>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="glvtable_8c.html">glvtable.c</a> </li>
<li class="footer">Generated on Thu May 19 2011 23:20:20 for AllegroGL by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.3 </li>
</ul>
</div>
</body>
</html>
|
