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41
42 #ifndef GLEXTENSIONS_H
43 #define GLEXTENSIONS_H
44
45 #include <QtOpenGL>
46
47 /*
48 Functions resolved:
49
50 glGenFramebuffersEXT
51 glGenRenderbuffersEXT
52 glBindRenderbufferEXT
53 glRenderbufferStorageEXT
54 glDeleteFramebuffersEXT
55 glDeleteRenderbuffersEXT
56 glBindFramebufferEXT
57 glFramebufferTexture2DEXT
58 glFramebufferRenderbufferEXT
59 glCheckFramebufferStatusEXT
60
61 glActiveTexture
62 glTexImage3D
63
64 glGenBuffers
65 glBindBuffer
66 glBufferData
67 glDeleteBuffers
68 glMapBuffer
69 glUnmapBuffer
70 */
71
72 #ifndef Q_WS_MAC
73 # ifndef APIENTRYP
74 # ifdef APIENTRY
75 # define APIENTRYP APIENTRY *
76 # else
77 # define APIENTRY
78 # define APIENTRYP *
79 # endif
80 # endif
81 #else
82 # define APIENTRY
83 # define APIENTRYP *
84 #endif
85
86 #ifndef GL_VERSION_1_2
87 #define GL_TEXTURE_3D 0x806F
88 #define GL_TEXTURE_WRAP_R 0x8072
89 #define GL_CLAMP_TO_EDGE 0x812F
90 #define GL_BGRA 0x80E1
91 #endif
92
93 #ifndef GL_VERSION_1_3
94 #define GL_TEXTURE0 0x84C0
95 #define GL_TEXTURE1 0x84C1
96 #define GL_TEXTURE2 0x84C2
97 #define GL_TEXTURE_CUBE_MAP 0x8513
98 #define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
99 //#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
100 //#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
101 //#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
102 //#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
103 //#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
104 #endif
105
106 #ifndef GL_ARB_vertex_buffer_object
107 typedef ptrdiff_t GLsizeiptrARB;
108 #endif
109
110 #ifndef GL_VERSION_1_5
111 #define GL_ARRAY_BUFFER 0x8892
112 #define GL_ELEMENT_ARRAY_BUFFER 0x8893
113 #define GL_READ_WRITE 0x88BA
114 #define GL_STATIC_DRAW 0x88E4
115 #endif
116
117 #ifndef GL_EXT_framebuffer_object
118 #define GL_RENDERBUFFER_EXT 0x8D41
119 #define GL_FRAMEBUFFER_EXT 0x8D40
120 #define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
121 #define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
122 #define GL_DEPTH_ATTACHMENT_EXT 0x8D00
123 #endif
124
125 typedef void (APIENTRY *_glGenFramebuffersEXT) (GLsizei, GLuint *);
126 typedef void (APIENTRY *_glGenRenderbuffersEXT) (GLsizei, GLuint *);
127 typedef void (APIENTRY *_glBindRenderbufferEXT) (GLenum, GLuint);
128 typedef void (APIENTRY *_glRenderbufferStorageEXT) (GLenum, GLenum, GLsizei, GLsizei);
129 typedef void (APIENTRY *_glDeleteFramebuffersEXT) (GLsizei, const GLuint*);
130 typedef void (APIENTRY *_glDeleteRenderbuffersEXT) (GLsizei, const GLuint*);
131 typedef void (APIENTRY *_glBindFramebufferEXT) (GLenum, GLuint);
132 typedef void (APIENTRY *_glFramebufferTexture2DEXT) (GLenum, GLenum, GLenum, GLuint, GLint);
133 typedef void (APIENTRY *_glFramebufferRenderbufferEXT) (GLenum, GLenum, GLenum, GLuint);
134 typedef GLenum (APIENTRY *_glCheckFramebufferStatusEXT) (GLenum);
135
136 typedef void (APIENTRY *_glActiveTexture) (GLenum);
137 typedef void (APIENTRY *_glTexImage3D) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *);
138
139 typedef void (APIENTRY *_glGenBuffers) (GLsizei, GLuint *);
140 typedef void (APIENTRY *_glBindBuffer) (GLenum, GLuint);
141 typedef void (APIENTRY *_glBufferData) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
142 typedef void (APIENTRY *_glDeleteBuffers) (GLsizei, const GLuint *);
143 typedef void *(APIENTRY *_glMapBuffer) (GLenum, GLenum);
144 typedef GLboolean (APIENTRY *_glUnmapBuffer) (GLenum);
145
146 struct GLExtensionFunctions
147 {
148 bool resolve(const QGLContext *context);
149
150 bool fboSupported();
151 bool openGL15Supported(); // the rest: multi-texture, 3D-texture, vertex buffer objects
152
153 _glGenFramebuffersEXT GenFramebuffersEXT;
154 _glGenRenderbuffersEXT GenRenderbuffersEXT;
155 _glBindRenderbufferEXT BindRenderbufferEXT;
156 _glRenderbufferStorageEXT RenderbufferStorageEXT;
157 _glDeleteFramebuffersEXT DeleteFramebuffersEXT;
158 _glDeleteRenderbuffersEXT DeleteRenderbuffersEXT;
159 _glBindFramebufferEXT BindFramebufferEXT;
160 _glFramebufferTexture2DEXT FramebufferTexture2DEXT;
161 _glFramebufferRenderbufferEXT FramebufferRenderbufferEXT;
162 _glCheckFramebufferStatusEXT CheckFramebufferStatusEXT;
163
164 _glActiveTexture ActiveTexture;
165 _glTexImage3D TexImage3D;
166
167 _glGenBuffers GenBuffers;
168 _glBindBuffer BindBuffer;
169 _glBufferData BufferData;
170 _glDeleteBuffers DeleteBuffers;
171 _glMapBuffer MapBuffer;
172 _glUnmapBuffer UnmapBuffer;
173 };
174
getGLExtensionFunctions()175 inline GLExtensionFunctions &getGLExtensionFunctions()
176 {
177 static GLExtensionFunctions funcs;
178 return funcs;
179 }
180
181 #define glGenFramebuffersEXT getGLExtensionFunctions().GenFramebuffersEXT
182 #define glGenRenderbuffersEXT getGLExtensionFunctions().GenRenderbuffersEXT
183 #define glBindRenderbufferEXT getGLExtensionFunctions().BindRenderbufferEXT
184 #define glRenderbufferStorageEXT getGLExtensionFunctions().RenderbufferStorageEXT
185 #define glDeleteFramebuffersEXT getGLExtensionFunctions().DeleteFramebuffersEXT
186 #define glDeleteRenderbuffersEXT getGLExtensionFunctions().DeleteRenderbuffersEXT
187 #define glBindFramebufferEXT getGLExtensionFunctions().BindFramebufferEXT
188 #define glFramebufferTexture2DEXT getGLExtensionFunctions().FramebufferTexture2DEXT
189 #define glFramebufferRenderbufferEXT getGLExtensionFunctions().FramebufferRenderbufferEXT
190 #define glCheckFramebufferStatusEXT getGLExtensionFunctions().CheckFramebufferStatusEXT
191
192 #define glActiveTexture getGLExtensionFunctions().ActiveTexture
193 #define glTexImage3D getGLExtensionFunctions().TexImage3D
194
195 #define glGenBuffers getGLExtensionFunctions().GenBuffers
196 #define glBindBuffer getGLExtensionFunctions().BindBuffer
197 #define glBufferData getGLExtensionFunctions().BufferData
198 #define glDeleteBuffers getGLExtensionFunctions().DeleteBuffers
199 #define glMapBuffer getGLExtensionFunctions().MapBuffer
200 #define glUnmapBuffer getGLExtensionFunctions().UnmapBuffer
201
202 #endif
203