GL_EXT_shader_pixel_local_storage
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_shader_pixel_local_storage.txt
GL_EXT_shader_pixel_local_storage

	GL_MAX_SHADER_PIXEL_LOCAL_STORAGE_FAST_SIZE_EXT 0x8F63
	GL_SHADER_PIXEL_LOCAL_STORAGE_EXT 0x8F64
	GL_MAX_SHADER_PIXEL_LOCAL_STORAGE_SIZE_EXT 0x8F67