GL_ARB_compute_shader
http://www.opengl.org/registry/specs/ARB/compute_shader.txt
GL_ARB_compute_shader
	GL_COMPUTE_SHADER_BIT 0x00000020
	GL_MAX_COMPUTE_SHARED_MEMORY_SIZE 0x8262
	GL_MAX_COMPUTE_UNIFORM_COMPONENTS 0x8263
	GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS 0x8264
	GL_MAX_COMPUTE_ATOMIC_COUNTERS 0x8265
	GL_MAX_COMBINED_COMPUTE_UNIFORM_COMPONENTS 0x8266
	GL_COMPUTE_WORK_GROUP_SIZE 0x8267
	GL_MAX_COMPUTE_WORK_GROUP_INVOCATIONS 0x90EB
	GL_UNIFORM_BLOCK_REFERENCED_BY_COMPUTE_SHADER 0x90EC
	GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_COMPUTE_SHADER 0x90ED
	GL_DISPATCH_INDIRECT_BUFFER 0x90EE
	GL_DISPATCH_INDIRECT_BUFFER_BINDING 0x90EF
	GL_COMPUTE_SHADER 0x91B9
	GL_MAX_COMPUTE_UNIFORM_BLOCKS 0x91BB
	GL_MAX_COMPUTE_TEXTURE_IMAGE_UNITS 0x91BC
	GL_MAX_COMPUTE_IMAGE_UNIFORMS 0x91BD
	GL_MAX_COMPUTE_WORK_GROUP_COUNT 0x91BE
	GL_MAX_COMPUTE_WORK_GROUP_SIZE 0x91BF
	void glDispatchCompute (GLuint num_groups_x, GLuint num_groups_y, GLuint num_groups_z)
	void glDispatchComputeIndirect (GLintptr indirect)
