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
|
#include "StdAfx.h"
// LuaTextures.cpp: implementation of the LuaTextures class.
//
//////////////////////////////////////////////////////////////////////
#include "mmgr.h"
#include "LuaTextures.h"
#include "Util.h"
/******************************************************************************/
/******************************************************************************/
LuaTextures::LuaTextures()
{
lastCode = 0;
}
LuaTextures::~LuaTextures()
{
map<string, Texture>::iterator it;
for (it = textures.begin(); it != textures.end(); ++it) {
const Texture& tex = it->second;
glDeleteTextures(1, &tex.id);
if (GLEW_EXT_framebuffer_object) {
glDeleteFramebuffersEXT(1, &tex.fbo);
glDeleteRenderbuffersEXT(1, &tex.fboDepth);
}
}
textures.clear();
}
string LuaTextures::Create(const Texture& tex)
{
GLint currentBinding;
glGetIntegerv(GL_TEXTURE_BINDING_2D, ¤tBinding);
GLuint texID;
glGenTextures(1, &texID);
glBindTexture(tex.target, texID);
GLenum dataFormat = GL_RGBA;
GLenum dataType = GL_UNSIGNED_BYTE;
if ((tex.format == GL_DEPTH_COMPONENT) ||
(tex.format == GL_DEPTH_COMPONENT16) ||
(tex.format == GL_DEPTH_COMPONENT24) ||
(tex.format == GL_DEPTH_COMPONENT32)) {
dataFormat = GL_DEPTH_COMPONENT;
dataType = GL_FLOAT;
}
glClearErrors();
glTexImage2D(tex.target, 0, tex.format,
tex.xsize, tex.ysize, tex.border,
dataFormat, dataType, NULL);
const GLenum err = glGetError();
if (err != GL_NO_ERROR) {
glDeleteTextures(1, &texID);
glBindTexture(GL_TEXTURE_2D, currentBinding);
return string("");
}
glTexParameteri(tex.target, GL_TEXTURE_WRAP_S, tex.wrap_s);
glTexParameteri(tex.target, GL_TEXTURE_WRAP_T, tex.wrap_t);
glTexParameteri(tex.target, GL_TEXTURE_WRAP_R, tex.wrap_r);
glTexParameteri(tex.target, GL_TEXTURE_MIN_FILTER, tex.min_filter);
glTexParameteri(tex.target, GL_TEXTURE_MAG_FILTER, tex.mag_filter);
glTexParameteri(tex.target, GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);
if ((tex.aniso != 0.0f) && GLEW_EXT_texture_filter_anisotropic) {
static GLfloat maxAniso = -1.0f;
if (maxAniso == -1.0f) {
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAniso);
}
const GLfloat aniso = std::max(1.0f, std::min(maxAniso, tex.aniso));
glTexParameterf(tex.target, GL_TEXTURE_MAX_ANISOTROPY_EXT, aniso);
}
glBindTexture(GL_TEXTURE_2D, currentBinding); // revert the current binding
GLuint fbo = 0;
GLuint fboDepth = 0;
if (tex.fbo != 0) {
if (!GLEW_EXT_framebuffer_object) {
glDeleteTextures(1, &texID);
return string("");
}
GLint currentFBO;
glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, ¤tFBO);
glGenFramebuffersEXT(1, &fbo);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
if (tex.fboDepth != 0) {
glGenRenderbuffersEXT(1, &fboDepth);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, fboDepth);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24,
tex.xsize, tex.ysize);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, fboDepth);
}
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
tex.target, texID, 0);
const GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
glDeleteTextures(1, &texID);
glDeleteFramebuffersEXT(1, &fbo);
glDeleteRenderbuffersEXT(1, &fboDepth);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, currentFBO);
return string("");
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, currentFBO);
}
lastCode++;
char buf[64];
SNPRINTF(buf, sizeof(buf), "%c%i", prefix, lastCode);
Texture newTex = tex;
newTex.id = texID;
newTex.name = buf;
newTex.fbo = fbo;
newTex.fboDepth = fboDepth;
textures[newTex.name] = newTex;
return newTex.name;
}
bool LuaTextures::Bind(const string& name) const
{
map<string, Texture>::const_iterator it = textures.find(name);
if (it != textures.end()) {
const Texture& tex = it->second;
glBindTexture(tex.target, tex.id);
return true;
}
return false;
}
bool LuaTextures::Free(const string& name)
{
map<string, Texture>::iterator it = textures.find(name);
if (it != textures.end()) {
const Texture& tex = it->second;
glDeleteTextures(1, &tex.id);
if (GLEW_EXT_framebuffer_object) {
glDeleteFramebuffersEXT(1, &tex.fbo);
glDeleteRenderbuffersEXT(1, &tex.fboDepth);
}
textures.erase(it);
return true;
}
return false;
}
bool LuaTextures::FreeFBO(const string& name)
{
if (!GLEW_EXT_framebuffer_object) {
return false;
}
map<string, Texture>::iterator it = textures.find(name);
if (it == textures.end()) {
return false;
}
Texture& tex = it->second;
glDeleteFramebuffersEXT(1, &tex.fbo);
glDeleteRenderbuffersEXT(1, &tex.fboDepth);
tex.fbo = 0;
tex.fboDepth = 0;
return true;
}
void LuaTextures::FreeAll()
{
map<string, Texture>::iterator it;
for (it = textures.begin(); it != textures.end(); ++it) {
const Texture& tex = it->second;
glDeleteTextures(1, &tex.id);
if (GLEW_EXT_framebuffer_object) {
glDeleteFramebuffersEXT(1, &tex.fbo);
glDeleteRenderbuffersEXT(1, &tex.fboDepth);
}
}
textures.clear();
}
const LuaTextures::Texture* LuaTextures::GetInfo(const string& name) const
{
map<string, Texture>::const_iterator it = textures.find(name);
if (it != textures.end()) {
return &(it->second);
}
return NULL;
}
/******************************************************************************/
/******************************************************************************/
|
