1GL_AMD_draw_buffers_blend 2http://www.opengl.org/registry/specs/AMD/draw_buffers_blend.txt 3GL_AMD_draw_buffers_blend 4 void glBlendEquationIndexedAMD (GLuint buf, GLenum mode) 5 void glBlendEquationSeparateIndexedAMD (GLuint buf, GLenum modeRGB, GLenum modeAlpha) 6 void glBlendFuncIndexedAMD (GLuint buf, GLenum src, GLenum dst) 7 void glBlendFuncSeparateIndexedAMD (GLuint buf, GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha) 8