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GL_ARB_internalformat_query
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http://www.opengl.org/registry/specs/ARB/internalformat_query.txt
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GL_ARB_internalformat_query
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GL_NUM_SAMPLE_COUNTS 0x9380
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void glGetInternalformativ (GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint* params)