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authorBrian <brian.paul@tungstengraphics.com>2007-06-20 15:22:39 -0600
committerBrian <brian.paul@tungstengraphics.com>2007-06-20 15:22:39 -0600
commitacef7c750113e34a92fd00c74308443d8fb3f974 (patch)
treeecaf285d41b96b81fea800c90d4cc7fc53a4b0e8 /src
parent7658a0208aa31f1443be6eaa720a383b34e2bbb3 (diff)
only blend active pixels in the quad
Diffstat (limited to 'src')
-rw-r--r--src/mesa/pipe/softpipe/sp_tile_blend.c191
1 files changed, 98 insertions, 93 deletions
diff --git a/src/mesa/pipe/softpipe/sp_tile_blend.c b/src/mesa/pipe/softpipe/sp_tile_blend.c
index 40af57149d..9ac0ccbfa5 100644
--- a/src/mesa/pipe/softpipe/sp_tile_blend.c
+++ b/src/mesa/pipe/softpipe/sp_tile_blend.c
@@ -64,101 +64,106 @@ blend_quad(struct quad_stage *qs, struct quad_header *quad)
* for all four pixels in the quad at once.
*/
for (j = 0; j < QUAD_SIZE; j++) {
- switch (softpipe->blend.rgb_src_factor) {
- case PIPE_BLENDFACTOR_ONE:
- srcTerm[0] = srcTerm[1] = srcTerm[2] = 1.0;
- break;
- case PIPE_BLENDFACTOR_SRC_ALPHA:
- srcTerm[0] = srcTerm[1] = srcTerm[2] = quad->outputs.color[3][j];
- break;
- case PIPE_BLENDFACTOR_ZERO:
- srcTerm[0] = srcTerm[1] = srcTerm[2] = 0.0;
- break;
- /* XXX fill in remaining terms */
- default:
- abort();
- }
-
- switch (softpipe->blend.alpha_src_factor) {
- case PIPE_BLENDFACTOR_ONE:
- srcTerm[3] = 1.0;
- break;
- case PIPE_BLENDFACTOR_SRC_ALPHA:
- srcTerm[3] = quad->outputs.color[3][j];
- break;
- case PIPE_BLENDFACTOR_ZERO:
- srcTerm[3] = 0.0;
- break;
- /* XXX fill in remaining terms */
- default:
- abort();
- }
-
- switch (softpipe->blend.rgb_dst_factor) {
- case PIPE_BLENDFACTOR_ONE:
- dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0;
- break;
- case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
- dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0 - quad->outputs.color[3][j];
- break;
- case PIPE_BLENDFACTOR_ZERO:
- dstTerm[0] = dstTerm[1] = dstTerm[2] = 0.0;
- break;
- /* XXX fill in remaining terms */
- default:
- abort();
- }
-
- switch (softpipe->blend.alpha_dst_factor) {
- case PIPE_BLENDFACTOR_ONE:
- dstTerm[3] = 1.0;
- break;
- case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
- dstTerm[3] = 1.0 - quad->outputs.color[3][j];
- break;
- case PIPE_BLENDFACTOR_ZERO:
- dstTerm[3] = 0.0;
- break;
- /* XXX fill in remaining terms */
- default:
- abort();
- }
- switch (softpipe->blend.rgb_func) {
- case PIPE_BLEND_ADD:
- quad->outputs.color[0][j] = source[0][j] * srcTerm[0] + dest[0][j] * dstTerm[0];
- quad->outputs.color[1][j] = source[1][j] * srcTerm[1] + dest[1][j] * dstTerm[1];
- quad->outputs.color[2][j] = source[2][j] * srcTerm[2] + dest[2][j] * dstTerm[2];
- quad->outputs.color[3][j] = source[3][j] * srcTerm[3] + dest[3][j] * dstTerm[3];
- break;
- case PIPE_BLEND_SUBTRACT:
- quad->outputs.color[0][j] = source[0][j] * srcTerm[0] - dest[0][j] * dstTerm[0];
- quad->outputs.color[1][j] = source[1][j] * srcTerm[1] - dest[1][j] * dstTerm[1];
- quad->outputs.color[2][j] = source[2][j] * srcTerm[2] - dest[2][j] * dstTerm[2];
- quad->outputs.color[3][j] = source[3][j] * srcTerm[3] - dest[3][j] * dstTerm[3];
- break;
- case PIPE_BLEND_REVERSE_SUBTRACT:
- quad->outputs.color[0][j] = dest[0][j] * dstTerm[0] - source[0][j] * srcTerm[0];
- quad->outputs.color[1][j] = dest[1][j] * dstTerm[1] - source[1][j] * srcTerm[1];
- quad->outputs.color[2][j] = dest[2][j] * dstTerm[2] - source[2][j] * srcTerm[2];
- quad->outputs.color[3][j] = dest[3][j] * dstTerm[3] - source[3][j] * srcTerm[3];
- break;
- case PIPE_BLEND_MIN:
- quad->outputs.color[0][j] = MIN2(dest[0][j], source[0][j]);
- quad->outputs.color[1][j] = MIN2(dest[1][j], source[1][j]);
- quad->outputs.color[2][j] = MIN2(dest[2][j], source[2][j]);
- quad->outputs.color[3][j] = MIN2(dest[3][j], source[3][j]);
- break;
- case PIPE_BLEND_MAX:
- quad->outputs.color[0][j] = MAX2(dest[0][j], source[0][j]);
- quad->outputs.color[1][j] = MAX2(dest[1][j], source[1][j]);
- quad->outputs.color[2][j] = MAX2(dest[2][j], source[2][j]);
- quad->outputs.color[3][j] = MAX2(dest[3][j], source[3][j]);
- break;
- default:
- abort();
+ /* if this pixel in the quad is alive */
+ if (quad->mask & (1 << j)) {
+
+ switch (softpipe->blend.rgb_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ srcTerm[0] = srcTerm[1] = srcTerm[2] = 1.0;
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ srcTerm[0] = srcTerm[1] = srcTerm[2] = quad->outputs.color[3][j];
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ srcTerm[0] = srcTerm[1] = srcTerm[2] = 0.0;
+ break;
+ /* XXX fill in remaining terms */
+ default:
+ abort();
+ }
+
+ switch (softpipe->blend.alpha_src_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ srcTerm[3] = 1.0;
+ break;
+ case PIPE_BLENDFACTOR_SRC_ALPHA:
+ srcTerm[3] = quad->outputs.color[3][j];
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ srcTerm[3] = 0.0;
+ break;
+ /* XXX fill in remaining terms */
+ default:
+ abort();
+ }
+
+ switch (softpipe->blend.rgb_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0;
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0 - quad->outputs.color[3][j];
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ dstTerm[0] = dstTerm[1] = dstTerm[2] = 0.0;
+ break;
+ /* XXX fill in remaining terms */
+ default:
+ abort();
+ }
+
+ switch (softpipe->blend.alpha_dst_factor) {
+ case PIPE_BLENDFACTOR_ONE:
+ dstTerm[3] = 1.0;
+ break;
+ case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
+ dstTerm[3] = 1.0 - quad->outputs.color[3][j];
+ break;
+ case PIPE_BLENDFACTOR_ZERO:
+ dstTerm[3] = 0.0;
+ break;
+ /* XXX fill in remaining terms */
+ default:
+ abort();
+ }
+
+ switch (softpipe->blend.rgb_func) {
+ case PIPE_BLEND_ADD:
+ quad->outputs.color[0][j] = source[0][j] * srcTerm[0] + dest[0][j] * dstTerm[0];
+ quad->outputs.color[1][j] = source[1][j] * srcTerm[1] + dest[1][j] * dstTerm[1];
+ quad->outputs.color[2][j] = source[2][j] * srcTerm[2] + dest[2][j] * dstTerm[2];
+ quad->outputs.color[3][j] = source[3][j] * srcTerm[3] + dest[3][j] * dstTerm[3];
+ break;
+ case PIPE_BLEND_SUBTRACT:
+ quad->outputs.color[0][j] = source[0][j] * srcTerm[0] - dest[0][j] * dstTerm[0];
+ quad->outputs.color[1][j] = source[1][j] * srcTerm[1] - dest[1][j] * dstTerm[1];
+ quad->outputs.color[2][j] = source[2][j] * srcTerm[2] - dest[2][j] * dstTerm[2];
+ quad->outputs.color[3][j] = source[3][j] * srcTerm[3] - dest[3][j] * dstTerm[3];
+ break;
+ case PIPE_BLEND_REVERSE_SUBTRACT:
+ quad->outputs.color[0][j] = dest[0][j] * dstTerm[0] - source[0][j] * srcTerm[0];
+ quad->outputs.color[1][j] = dest[1][j] * dstTerm[1] - source[1][j] * srcTerm[1];
+ quad->outputs.color[2][j] = dest[2][j] * dstTerm[2] - source[2][j] * srcTerm[2];
+ quad->outputs.color[3][j] = dest[3][j] * dstTerm[3] - source[3][j] * srcTerm[3];
+ break;
+ case PIPE_BLEND_MIN:
+ quad->outputs.color[0][j] = MIN2(dest[0][j], source[0][j]);
+ quad->outputs.color[1][j] = MIN2(dest[1][j], source[1][j]);
+ quad->outputs.color[2][j] = MIN2(dest[2][j], source[2][j]);
+ quad->outputs.color[3][j] = MIN2(dest[3][j], source[3][j]);
+ break;
+ case PIPE_BLEND_MAX:
+ quad->outputs.color[0][j] = MAX2(dest[0][j], source[0][j]);
+ quad->outputs.color[1][j] = MAX2(dest[1][j], source[1][j]);
+ quad->outputs.color[2][j] = MAX2(dest[2][j], source[2][j]);
+ quad->outputs.color[3][j] = MAX2(dest[3][j], source[3][j]);
+ break;
+ default:
+ abort();
+ }
}
- } /* loop over quads */
+ } /* loop over quad's pixels*/
/* pass blended quad to next stage */
qs->next->run(qs->next, quad);