GL_ARB_texture_multisample
http://www.opengl.org/registry/specs/ARB/texture_multisample.txt
GL_ARB_texture_multisample
	GL_SAMPLE_POSITION 0x8E50
	GL_SAMPLE_MASK 0x8E51
	GL_SAMPLE_MASK_VALUE 0x8E52
	GL_MAX_SAMPLE_MASK_WORDS 0x8E59
	GL_TEXTURE_2D_MULTISAMPLE 0x9100
	GL_PROXY_TEXTURE_2D_MULTISAMPLE 0x9101
	GL_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9102
	GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9103
	GL_TEXTURE_BINDING_2D_MULTISAMPLE 0x9104
	GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY 0x9105
	GL_TEXTURE_SAMPLES 0x9106
	GL_TEXTURE_FIXED_SAMPLE_LOCATIONS 0x9107
	GL_SAMPLER_2D_MULTISAMPLE 0x9108
	GL_INT_SAMPLER_2D_MULTISAMPLE 0x9109
	GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE 0x910A
	GL_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910B
	GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910C
	GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY 0x910D
	GL_MAX_COLOR_TEXTURE_SAMPLES 0x910E
	GL_MAX_DEPTH_TEXTURE_SAMPLES 0x910F
	GL_MAX_INTEGER_SAMPLES 0x9110
	void glGetMultisamplefv (GLenum pname, GLuint index, GLfloat* val)
	void glSampleMaski (GLuint index, GLbitfield mask)
	void glTexImage2DMultisample (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations)
	void glTexImage3DMultisample (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations)
