diff options
| author | Brian <brian.paul@tungstengraphics.com> | 2007-07-03 17:31:59 -0600 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-07-03 17:31:59 -0600 |
| commit | ac5523a9c31efbb89e58ef99da47b0d81a21409c (patch) | |
| tree | 977724ca46a7a19acfcab40ed55168c54ebc4a60 | |
| parent | 284efcfc27aaeb447e0898ae3342e9fee20c584a (diff) | |
SIMD comments
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_quad_alpha_test.c | 4 | ||||
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_quad_depth_test.c | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_quad_alpha_test.c b/src/mesa/pipe/softpipe/sp_quad_alpha_test.c index 0059b3abf4..e0f7225d74 100644 --- a/src/mesa/pipe/softpipe/sp_quad_alpha_test.c +++ b/src/mesa/pipe/softpipe/sp_quad_alpha_test.c @@ -23,6 +23,10 @@ alpha_test_quad(struct quad_stage *qs, struct quad_header *quad) quad->mask = 0x0; break; case PIPE_FUNC_LESS: + /* + * If quad->mask were an array [4] we could do this SIMD-style: + * quad->mask &= (quad->outputs.color[3] <= vec4(ref)); + */ for (j = 0; j < QUAD_SIZE; j++) { if (quad->mask & (1 << j)) { if (quad->outputs.color[3][j] >= ref) { diff --git a/src/mesa/pipe/softpipe/sp_quad_depth_test.c b/src/mesa/pipe/softpipe/sp_quad_depth_test.c index b72bbac0d4..fcd6a22e1d 100644 --- a/src/mesa/pipe/softpipe/sp_quad_depth_test.c +++ b/src/mesa/pipe/softpipe/sp_quad_depth_test.c @@ -54,6 +54,7 @@ depth_test_quad(struct quad_stage *qs, struct quad_header *quad) break; case PIPE_FUNC_LESS: /* Note this is pretty much a single sse or cell instruction. + * Like this: quad->mask &= (quad->outputs.depth < zzzz); */ for (j = 0; j < QUAD_SIZE; j++) { if (quad->outputs.depth[j] < zzzz[j]) |