GL_ARB_shader_storage_buffer_object
http://www.opengl.org/registry/specs/gl/ARB/shader_storage_buffer_object.txt
GL_ARB_shader_storage_buffer_object
	GL_SHADER_STORAGE_BARRIER_BIT 0x2000
	GL_MAX_COMBINED_SHADER_OUTPUT_RESOURCES 0x8F39
	GL_SHADER_STORAGE_BUFFER 0x90D2
	GL_SHADER_STORAGE_BUFFER_BINDING 0x90D3
	GL_SHADER_STORAGE_BUFFER_START 0x90D4
	GL_SHADER_STORAGE_BUFFER_SIZE 0x90D5
	GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS 0x90D6
	GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS 0x90D7
	GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS 0x90D8
	GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS 0x90D9
	GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS 0x90DA
	GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS 0x90DB
	GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS 0x90DC
	GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS 0x90DD
	GL_MAX_SHADER_STORAGE_BLOCK_SIZE 0x90DE
	GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT 0x90DF
	void glShaderStorageBlockBinding (GLuint program, GLuint storageBlockIndex, GLuint storageBlockBinding)