return BUFFER_BIT_FRONT_LEFT;
case GL_AUX0:
return BUFFER_BIT_AUX0;
+ case GL_AUX1:
+ case GL_AUX2:
+ case GL_AUX3:
+ return 1 << BUFFER_COUNT; /* invalid, but not BAD_MASK */
case GL_COLOR_ATTACHMENT0_EXT:
return BUFFER_BIT_COLOR0;
case GL_COLOR_ATTACHMENT1_EXT:
return BUFFER_FRONT_LEFT;
case GL_AUX0:
return BUFFER_AUX0;
+ case GL_AUX1:
+ case GL_AUX2:
+ case GL_AUX3:
+ return BUFFER_COUNT; /* invalid, but not -1 */
case GL_COLOR_ATTACHMENT0_EXT:
return BUFFER_COLOR0;
case GL_COLOR_ATTACHMENT1_EXT: