GL_ATI_envmap_bumpmap
http://oss.sgi.com/projects/ogl-sample/registry/ATI/envmap_bumpmap.txt
	GL_BUMP_ROT_MATRIX_ATI 0x8775
	GL_BUMP_ROT_MATRIX_SIZE_ATI 0x8776
	GL_BUMP_NUM_TEX_UNITS_ATI 0x8777
	GL_BUMP_TEX_UNITS_ATI 0x8778
	GL_DUDV_ATI 0x8779
	GL_DU8DV8_ATI 0x877A
	GL_BUMP_ENVMAP_ATI 0x877B
	GL_BUMP_TARGET_ATI 0x877C
	void glTexBumpParameterivATI (GLenum pname, GLint *param)
	void glTexBumpParameterfvATI (GLenum pname, GLfloat *param)
	void glGetTexBumpParameterivATI (GLenum pname, GLint *param)
	void glGetTexBumpParameterfvATI (GLenum pname, GLfloat *param)
