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
|
/************************************************************************************
AstroMenace (Hardcore 3D space shooter with spaceship upgrade possibilities)
Copyright © 2006-2013 Michael Kurinnoy, Viewizard
AstroMenace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
AstroMenace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AstroMenace. If not, see <http://www.gnu.org/licenses/>.
Web Site: http://www.viewizard.com/
Project: http://sourceforge.net/projects/openastromenace/
E-mail: viewizard@viewizard.com
*************************************************************************************/
#include "RendererInterface.h"
// VBO Extension Function Pointers
PFNGLGENBUFFERSARBPROC glGenBuffersARB = NULL; // VBO Name Generation Procedure
PFNGLBINDBUFFERARBPROC glBindBufferARB = NULL; // VBO Bind Procedure
PFNGLBUFFERDATAARBPROC glBufferDataARB = NULL; // VBO Data Loading Procedure
PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB = NULL; // VBO Deletion Procedure
PFNGLISBUFFERARBPROC glIsBufferARB = NULL;
//------------------------------------------------------------------------------------
// Инициализация работы с VBO
//------------------------------------------------------------------------------------
bool vw_Internal_InitializationVBO()
{
// Get Pointers To The GL Functions
glGenBuffersARB = (PFNGLGENBUFFERSARBPROC) SDL_GL_GetProcAddress("glGenBuffersARB");
glBindBufferARB = (PFNGLBINDBUFFERARBPROC) SDL_GL_GetProcAddress("glBindBufferARB");
glBufferDataARB = (PFNGLBUFFERDATAARBPROC) SDL_GL_GetProcAddress("glBufferDataARB");
glDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC) SDL_GL_GetProcAddress("glDeleteBuffersARB");
glIsBufferARB = (PFNGLISBUFFERARBPROC) SDL_GL_GetProcAddress("glIsBufferARB");
if (glGenBuffersARB == NULL || glBindBufferARB == NULL || glBufferDataARB == NULL ||
glDeleteBuffersARB == NULL || glIsBufferARB == NULL)
{
glGenBuffersARB = NULL;
glBindBufferARB = NULL;
glBufferDataARB = NULL;
glDeleteBuffersARB = NULL;
glIsBufferARB = NULL;
return false;
}
return true;
}
//------------------------------------------------------------------------------------
// Процедура генерации буферов
//------------------------------------------------------------------------------------
bool vw_BuildVBO(int NumVertices, void *Data, int Stride, unsigned int *VBO)
{
if (Data == 0) return false;
if (VBO == 0) return false;
if (glGenBuffersARB == NULL) return false;
if (glBindBufferARB == NULL) return false;
if (glBufferDataARB == NULL) return false;
if (glIsBufferARB == NULL) return false;
glGenBuffersARB( 1, VBO ); // Get A Valid Name
glBindBufferARB( GL_ARRAY_BUFFER_ARB, *VBO ); // Bind The Buffer
// Load The Data
glBufferDataARB( GL_ARRAY_BUFFER_ARB, NumVertices*Stride*sizeof(float), Data, GL_STATIC_DRAW_ARB );
// убираем буфер
glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
if (!glIsBufferARB(*VBO)) return false;
return true;
}
//------------------------------------------------------------------------------------
// Процедура генерации индекс буферов
//------------------------------------------------------------------------------------
bool vw_BuildIBO(int NumIndex, void *Data, unsigned int *IBO)
{
if (Data == 0) return false;
if (IBO == 0) return false;
if (glGenBuffersARB == NULL) return false;
if (glBindBufferARB == NULL) return false;
if (glBufferDataARB == NULL) return false;
if (glIsBufferARB == NULL) return false;
glGenBuffersARB( 1, IBO ); // Get A Valid Name
glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, *IBO ); // Bind The Buffer
// Load The Data
glBufferDataARB( GL_ELEMENT_ARRAY_BUFFER_ARB, NumIndex*sizeof(unsigned int), Data, GL_STATIC_DRAW_ARB );
// убираем буфер
glBindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
if (!glIsBufferARB(*IBO)) return false;
return true;
}
//------------------------------------------------------------------------------------
// Установка текущего буфера
//------------------------------------------------------------------------------------
void vw_BindVBO(int target, unsigned int VBO)
{
if (glBindBufferARB == NULL) return;
switch (target)
{
case RI_ARRAY_BUFFER: glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO); break;
case RI_ELEMENT_ARRAY_BUFFER: glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, VBO); break;
default: fprintf(stderr, "Error in vw_BindVBO function call, wrong target.\n"); break;
}
}
//------------------------------------------------------------------------------------
// Процедура удаления буфера
//------------------------------------------------------------------------------------
void vw_DeleteVBO(unsigned int VBO)
{
if (glIsBufferARB == NULL) return;
if (glDeleteBuffersARB == NULL) return;
if (glIsBufferARB(VBO)) glDeleteBuffersARB(1, &VBO);
}
|
