Ykkrosh
d24fd1b0c9
(Just for fun, compressed texture uploads are mapped onto a decompression function if the user's system doesn't understand S3TC textures.) Corrected (unless I'm wrong) GL version identification logic. This was SVN commit r2384.
85 lines
4.3 KiB
C
Executable File
85 lines
4.3 KiB
C
Executable File
#include <GL/glext.h>
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#ifdef _WIN32
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# include <GL/wglext.h>
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#endif
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/*
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typedef void* HDC;
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typedef void* HGLRC;
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typedef void* HPBUFFERARB;
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*/
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/*
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FUNC is used for functions that are only extensions.
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FUNC2 is used for functions that have been promoted to core features.
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The FUNC2 call includes the version of OpenGL in which the extension was promoted,
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and the pre- and post-promotion names (e.g. "glBindBufferARB" vs "glBindBuffer").
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If the GL driver is advertising a sufficiently high version, we load the promoted
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name; otherwise we use the *ARB name. (The spec says:
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"GL implementations of such later revisions should continue to export the name
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strings of promoted extensions in the EXTENSIONS string, and continue to support
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the ARB-affixed versions of functions and enumerants as a transition aid."
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but some drivers might be stupid/buggy and fail to do that, so we don't just use
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the ARB names unconditionally.)
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The names are made accessible to engine code only via the ARB name, to make it
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obvious that care must be taken (i.e. by being certain that the extension is
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actually supported).
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*/
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// were these defined as real functions in gl.h already?
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#ifndef REAL_GL_1_2
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// GL_EXT_draw_range_elements / GL1.2:
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FUNC2(void, glDrawRangeElementsEXT, glDrawRangeElements, "1.2", (GLenum, GLuint, GLuint, GLsizei, GLenum, GLvoid*))
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#endif
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#ifndef REAL_GL_1_3
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// GL_ARB_multitexture / GL1.3:
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FUNC2(void, glMultiTexCoord2fARB, glMultiTexCoord2f, "1.3", (int, float, float))
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FUNC2(void, glActiveTextureARB, glActiveTexture, "1.3", (int))
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FUNC2(void, glClientActiveTextureARB, glClientActiveTexture, "1.3", (int))
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#endif
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// GL_ARB_vertex_buffer_object / GL1.5:
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FUNC2(void, glBindBufferARB, glBindBuffer, "1.5", (int target, GLuint buffer))
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FUNC2(void, glDeleteBuffersARB, glDeleteBuffers, "1.5", (GLsizei n, const GLuint* buffers))
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FUNC2(void, glGenBuffersARB, glGenBuffers, "1.5", (GLsizei n, GLuint* buffers))
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FUNC2(bool, glIsBufferARB, glIsBuffer, "1.5", (GLuint buffer))
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FUNC2(void, glBufferDataARB, glBufferData, "1.5", (int target, GLsizeiptrARB size, const void* data, int usage))
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FUNC2(void, glBufferSubDataARB, glBufferSubData, "1.5", (int target, GLintptrARB offset, GLsizeiptrARB size, const void* data))
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FUNC2(void, glGetBufferSubDataARB, glGetBufferSubData, "1.5", (int target, GLintptrARB offset, GLsizeiptrARB size, void* data))
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FUNC2(void*, glMapBufferARB, glMapBuffer, "1.5", (int target, int access))
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FUNC2(bool, glUnmapBufferARB, glUnmapBuffer, "1.5", (int target))
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FUNC2(void, glGetBufferParameterivARB, glGetBufferParameteriv, "1.5", (int target, int pname, int* params))
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FUNC2(void, glGetBufferPointervARB, glGetBufferPointerv, "1.5", (int target, int pname, void** params))
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// GL_ARB_texture_compression / GL1.3
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FUNC2(void, glCompressedTexImage3DARB, glCompressedTexImage3D, "1.3", (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*))
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FUNC2(void, glCompressedTexImage2DARB, glCompressedTexImage2D, "1.3", (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const GLvoid*))
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FUNC2(void, glCompressedTexImage1DARB, glCompressedTexImage1D, "1.3", (GLenum, GLint, GLenum, GLsizei, GLint, GLsizei, const GLvoid*))
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FUNC2(void, glCompressedTexSubImage3DARB, glCompressedTexSubImage3D, "1.3", (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*))
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FUNC2(void, glCompressedTexSubImage2DARB, glCompressedTexSubImage2D, "1.3", (GLenum, GLint, GLint, GLint, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid*))
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FUNC2(void, glCompressedTexSubImage1DARB, glCompressedTexSubImage1D, "1.3", (GLenum, GLint, GLint, GLsizei, GLenum, GLsizei, const GLvoid*))
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FUNC2(void, glGetCompressedTexImageARB, glGetCompressedTexImage, "1.3", (GLenum, GLint, GLvoid*))
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#ifdef _WIN32
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// WGL_EXT_swap_control
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FUNC(int, wglSwapIntervalEXT, (int))
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// WGL_ARB_pbuffer
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FUNC(HPBUFFERARB, wglCreatePbufferARB, (HDC, int, int, int, const int*))
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FUNC(HDC, wglGetPbufferDCARB, (HPBUFFERARB))
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FUNC(int, wglReleasePbufferDCARB, (HPBUFFERARB, HDC))
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FUNC(int, wglDestroyPbufferARB, (HPBUFFERARB))
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FUNC(int, wglQueryPbufferARB, (HPBUFFERARB, int, int*))
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// GL_ARB_pixel_format
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FUNC(int, wglGetPixelFormatAttribivARB, (HDC, int, int, unsigned int, const int*, int*))
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FUNC(int, wglGetPixelFormatAttribfvARB, (HDC, int, int, unsigned int, const int*, float*))
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FUNC(int, wglChoosePixelFormatARB, (HDC, const int *, const float*, unsigned int, int*, unsigned int*))
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#endif // _WIN32
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