GL_NV_internalformat_sample_query
https://www.khronos.org/registry/OpenGL/extensions/NV/NV_internalformat_sample_query.txt
GL_NV_internalformat_sample_query

	GL_MULTISAMPLES_NV 0x9371
	GL_SUPERSAMPLE_SCALE_X_NV 0x9372
	GL_SUPERSAMPLE_SCALE_Y_NV 0x9373
	GL_CONFORMANT_NV 0x9374
	void glGetInternalformatSampleivNV (GLenum target, GLenum internalformat, GLsizei samples, GLenum pname, GLsizei bufSize, GLint* params)