1GL_ARB_multisample
2https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_multisample.txt
3GL_ARB_multisample
4
5	GL_MULTISAMPLE_ARB 0x809D
6	GL_SAMPLE_ALPHA_TO_COVERAGE_ARB 0x809E
7	GL_SAMPLE_ALPHA_TO_ONE_ARB 0x809F
8	GL_SAMPLE_COVERAGE_ARB 0x80A0
9	GL_SAMPLE_BUFFERS_ARB 0x80A8
10	GL_SAMPLES_ARB 0x80A9
11	GL_SAMPLE_COVERAGE_VALUE_ARB 0x80AA
12	GL_SAMPLE_COVERAGE_INVERT_ARB 0x80AB
13	GL_MULTISAMPLE_BIT_ARB 0x20000000
14	void glSampleCoverageARB (GLclampf value, GLboolean invert)
15