GL_NV_conservative_raster_pre_snap_triangles
https://www.khronos.org/registry/OpenGL/extensions/NV/NV_conservative_raster_pre_snap_triangles.txt
GL_NV_conservative_raster_pre_snap_triangles

	GL_CONSERVATIVE_RASTER_MODE_NV 0x954D
	GL_CONSERVATIVE_RASTER_MODE_POST_SNAP_NV 0x954E
	GL_CONSERVATIVE_RASTER_MODE_PRE_SNAP_TRIANGLES_NV 0x954F
	void glConservativeRasterParameteriNV (GLenum pname, GLint param)