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17 lines
1016 B
17 lines
1016 B
13 years ago
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OpenGL header and extension loader is generated using [glLoadGen](https://bitbucket.org/alfonse/glloadgen),
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preferrably from tip of the development branch, currently `2.0`. For it to work
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flawlessly on OpenGL 2.1 and simultaenously not containing all that pre-core
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stuff, you need to patch it with included `glloadgen.patch`, which will then
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force it to use pre-3.0 `glGetString(GL_EXTENSIONS)` even if we request OpenGL
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4.4. Otherwise it would use `glGetStringi(GL_EXTENSIONS, i)`, which is not
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available on OpenGL 2.1 and extension loading will fail on these systems.
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See `extensions.txt` for a list of requested non-core extensions. Copy the file
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into glLoadGen directory and generate the files using Lua:
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lua LoadGen.lua -style=pointer_c -indent=space -spec=gl -version=4.4 -profile=core -extfile=extensions.txt magnum
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Then copy generated `gl_magnum.c` and `gl_magnum.h` to this directory. You may
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want to remove trailing spaces to make the diff cleaner. Be sure to check the
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diff for suspicious changes.
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