From e4da46e007de5c83202976a12efb0e894494a354 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 20 Apr 2011 17:55:54 -0700 Subject: [PATCH] mesa: Add some comments about FRAG_RESULT_COLOR vs FRAG_RESULT_DATAn. This came from reading what swrast does, and 965 now behaves the same and gallium appears to as well. --- src/mesa/main/mtypes.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 160ae9d2622..e90941d3570 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -376,7 +376,15 @@ typedef enum { FRAG_RESULT_DEPTH = 0, FRAG_RESULT_STENCIL = 1, + /* If a single color should be written to all render targets, this + * register is written. No FRAG_RESULT_DATAn will be written. + */ FRAG_RESULT_COLOR = 2, + + /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n] + * or ARB_fragment_program fragment.color[n]) color results. If + * any are written, FRAG_RESULT_COLOR will not be written. + */ FRAG_RESULT_DATA0 = 3, FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS) } gl_frag_result; -- 2.30.2