Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
* Source 0: [required] Color 0.
* Source 1: [optional] Color 1 (for dual source blend messages).
* Source 2: [optional] Src0 Alpha.
- * Source 3: [optional] Source Depth (passthrough from the thread payload).
- * Source 4: [optional] Destination Depth (gl_FragDepth).
+ * Source 3: [optional] Source Depth (gl_FragDepth)
+ * Source 4: [optional (gen4-5)] Destination Depth passthrough from thread
* Source 5: [optional] Sample Mask (gl_SampleMask).
* Source 6: [required] Number of color components (as a UD immediate).
*/