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50
51#ifndef GLEXTENSIONS_H
52#define GLEXTENSIONS_H
53
54#include <QtOpenGL>
55
56/*
57Functions resolved:
58
59glGenFramebuffersEXT
60glGenRenderbuffersEXT
61glBindRenderbufferEXT
62glRenderbufferStorageEXT
63glDeleteFramebuffersEXT
64glDeleteRenderbuffersEXT
65glBindFramebufferEXT
66glFramebufferTexture2DEXT
67glFramebufferRenderbufferEXT
68glCheckFramebufferStatusEXT
69
70glActiveTexture
71glTexImage3D
72
73glGenBuffers
74glBindBuffer
75glBufferData
76glDeleteBuffers
77glMapBuffer
78glUnmapBuffer
79*/
80
81#ifndef APIENTRY
82# define APIENTRY
83#endif
84#ifndef APIENTRYP
85# define APIENTRYP APIENTRY *
86#endif
87
88#ifndef GL_VERSION_1_2
89#define GL_TEXTURE_3D 0x806F
90#define GL_TEXTURE_WRAP_R 0x8072
91#define GL_CLAMP_TO_EDGE 0x812F
92#define GL_BGRA 0x80E1
93#endif
94
95#ifndef GL_VERSION_1_3
96#define GL_TEXTURE0 0x84C0
97#define GL_TEXTURE1 0x84C1
98#define GL_TEXTURE2 0x84C2
99#define GL_TEXTURE_CUBE_MAP 0x8513
100#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
101//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
102//#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
103//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
104//#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
105//#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
106#endif
107
108#ifndef GL_ARB_vertex_buffer_object
109typedef ptrdiff_t GLsizeiptrARB;
110#endif
111
112#ifndef GL_VERSION_1_5
113#define GL_ARRAY_BUFFER 0x8892
114#define GL_ELEMENT_ARRAY_BUFFER 0x8893
115#define GL_READ_WRITE 0x88BA
116#define GL_STATIC_DRAW 0x88E4
117#endif
118
119#ifndef GL_EXT_framebuffer_object
120#define GL_RENDERBUFFER_EXT 0x8D41
121#define GL_FRAMEBUFFER_EXT 0x8D40
122#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
123#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
124#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
125#endif
126
127typedef void (APIENTRY *_glGenFramebuffersEXT) (GLsizei, GLuint *);
128typedef void (APIENTRY *_glGenRenderbuffersEXT) (GLsizei, GLuint *);
129typedef void (APIENTRY *_glBindRenderbufferEXT) (GLenum, GLuint);
130typedef void (APIENTRY *_glRenderbufferStorageEXT) (GLenum, GLenum, GLsizei, GLsizei);
131typedef void (APIENTRY *_glDeleteFramebuffersEXT) (GLsizei, const GLuint*);
132typedef void (APIENTRY *_glDeleteRenderbuffersEXT) (GLsizei, const GLuint*);
133typedef void (APIENTRY *_glBindFramebufferEXT) (GLenum, GLuint);
134typedef void (APIENTRY *_glFramebufferTexture2DEXT) (GLenum, GLenum, GLenum, GLuint, GLint);
135typedef void (APIENTRY *_glFramebufferRenderbufferEXT) (GLenum, GLenum, GLenum, GLuint);
136typedef GLenum (APIENTRY *_glCheckFramebufferStatusEXT) (GLenum);
137
138typedef void (APIENTRY *_glActiveTexture) (GLenum);
139typedef void (APIENTRY *_glTexImage3D) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *);
140
141typedef void (APIENTRY *_glGenBuffers) (GLsizei, GLuint *);
142typedef void (APIENTRY *_glBindBuffer) (GLenum, GLuint);
143typedef void (APIENTRY *_glBufferData) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
144typedef void (APIENTRY *_glDeleteBuffers) (GLsizei, const GLuint *);
145typedef void *(APIENTRY *_glMapBuffer) (GLenum, GLenum);
146typedef GLboolean (APIENTRY *_glUnmapBuffer) (GLenum);
147
148struct GLExtensionFunctions
149{
150 bool resolve(const QGLContext *context);
151
152 bool fboSupported();
153 bool openGL15Supported(); // the rest: multi-texture, 3D-texture, vertex buffer objects
154
155 _glGenFramebuffersEXT GenFramebuffersEXT;
156 _glGenRenderbuffersEXT GenRenderbuffersEXT;
157 _glBindRenderbufferEXT BindRenderbufferEXT;
158 _glRenderbufferStorageEXT RenderbufferStorageEXT;
159 _glDeleteFramebuffersEXT DeleteFramebuffersEXT;
160 _glDeleteRenderbuffersEXT DeleteRenderbuffersEXT;
161 _glBindFramebufferEXT BindFramebufferEXT;
162 _glFramebufferTexture2DEXT FramebufferTexture2DEXT;
163 _glFramebufferRenderbufferEXT FramebufferRenderbufferEXT;
164 _glCheckFramebufferStatusEXT CheckFramebufferStatusEXT;
165
166 _glActiveTexture ActiveTexture;
167 _glTexImage3D TexImage3D;
168
169 _glGenBuffers GenBuffers;
170 _glBindBuffer BindBuffer;
171 _glBufferData BufferData;
172 _glDeleteBuffers DeleteBuffers;
173 _glMapBuffer MapBuffer;
174 _glUnmapBuffer UnmapBuffer;
175};
176
177inline GLExtensionFunctions &getGLExtensionFunctions()
178{
179 static GLExtensionFunctions funcs;
180 return funcs;
181}
182
183#define glGenFramebuffersEXT getGLExtensionFunctions().GenFramebuffersEXT
184#define glGenRenderbuffersEXT getGLExtensionFunctions().GenRenderbuffersEXT
185#define glBindRenderbufferEXT getGLExtensionFunctions().BindRenderbufferEXT
186#define glRenderbufferStorageEXT getGLExtensionFunctions().RenderbufferStorageEXT
187#define glDeleteFramebuffersEXT getGLExtensionFunctions().DeleteFramebuffersEXT
188#define glDeleteRenderbuffersEXT getGLExtensionFunctions().DeleteRenderbuffersEXT
189#define glBindFramebufferEXT getGLExtensionFunctions().BindFramebufferEXT
190#define glFramebufferTexture2DEXT getGLExtensionFunctions().FramebufferTexture2DEXT
191#define glFramebufferRenderbufferEXT getGLExtensionFunctions().FramebufferRenderbufferEXT
192#define glCheckFramebufferStatusEXT getGLExtensionFunctions().CheckFramebufferStatusEXT
193
194#define glActiveTexture getGLExtensionFunctions().ActiveTexture
195#define glTexImage3D getGLExtensionFunctions().TexImage3D
196
197#define glGenBuffers getGLExtensionFunctions().GenBuffers
198#define glBindBuffer getGLExtensionFunctions().BindBuffer
199#define glBufferData getGLExtensionFunctions().BufferData
200#define glDeleteBuffers getGLExtensionFunctions().DeleteBuffers
201#define glMapBuffer getGLExtensionFunctions().MapBuffer
202#define glUnmapBuffer getGLExtensionFunctions().UnmapBuffer
203
204#endif
205

source code of qtbase/examples/widgets/graphicsview/boxes/glextensions.h