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authorBrian <brian.paul@tungstengraphics.com>2007-10-10 16:21:28 -0600
committerBrian <brian.paul@tungstengraphics.com>2007-10-10 16:21:28 -0600
commitbabdd1f6516a21d774a15432290358640aa099d8 (patch)
tree08dfcf122e6de27a32846302d7351193799a67d4 /src/mesa/pipe/softpipe
parentd37e048cd1e24952214267a2c33cbaf346c10b26 (diff)
minor optimization for color/z results
Diffstat (limited to 'src/mesa/pipe/softpipe')
-rwxr-xr-xsrc/mesa/pipe/softpipe/sp_quad_fs.c45
1 files changed, 30 insertions, 15 deletions
diff --git a/src/mesa/pipe/softpipe/sp_quad_fs.c b/src/mesa/pipe/softpipe/sp_quad_fs.c
index b6005c6a69..c850f08c57 100755
--- a/src/mesa/pipe/softpipe/sp_quad_fs.c
+++ b/src/mesa/pipe/softpipe/sp_quad_fs.c
@@ -47,6 +47,7 @@ struct quad_shade_stage
struct tgsi_sampler samplers[PIPE_MAX_SAMPLERS];
struct tgsi_exec_machine machine;
struct tgsi_exec_vector *inputs, *outputs;
+ int colorOutSlot, depthOutSlot;
};
@@ -78,7 +79,6 @@ shade_quad(
const float fx = (float) quad->x0;
const float fy = (float) quad->y0;
struct tgsi_exec_machine *machine = &qss->machine;
- uint colorOut;
/* Consts does not require 16 byte alignment. */
machine->Consts = softpipe->mapped_constants[PIPE_SHADER_FRAGMENT];
@@ -110,32 +110,33 @@ shade_quad(
quad->mask &= tgsi_exec_machine_run( machine );
}
- if (qss->stage.softpipe->fs->output_semantic_name[0] == TGSI_SEMANTIC_POSITION) {
- /* output[0] is new Z */
+ /* store result color */
+ if (qss->colorOutSlot >= 0) {
+ /* XXX need to handle multiple color outputs someday */
+ assert(qss->stage.softpipe->fs->output_semantic_name[qss->colorOutSlot]
+ == TGSI_SEMANTIC_COLOR);
+ memcpy(
+ quad->outputs.color,
+ &machine->Outputs[qss->colorOutSlot].xyzw[0].f[0],
+ sizeof( quad->outputs.color ) );
+ }
+
+ /* store result Z */
+ if (qss->depthOutSlot >= 0) {
+ /* output[slot] is new Z */
uint i;
for (i = 0; i < 4; i++) {
quad->outputs.depth[i] = machine->Outputs[0].xyzw[2].f[i];
}
- colorOut = 1;
}
else {
- /* pass input Z (which was interpolated by the executor) to output Z */
+ /* copy input Z (which was interpolated by the executor) to output Z */
uint i;
for (i = 0; i < 4; i++) {
quad->outputs.depth[i] = machine->Inputs[0].xyzw[2].f[i];
}
- colorOut = 0;
}
- /* store result color */
- /* XXX need to handle multiple color outputs someday */
- assert(qss->stage.softpipe->fs->output_semantic_name[colorOut]
- == TGSI_SEMANTIC_COLOR);
- memcpy(
- quad->outputs.color,
- &machine->Outputs[colorOut].xyzw[0].f[0],
- sizeof( quad->outputs.color ) );
-
/* shader may cull fragments */
if( quad->mask ) {
qs->next->run( qs->next, quad );
@@ -173,6 +174,20 @@ static void shade_begin(struct quad_stage *qs)
PIPE_MAX_SAMPLERS,
qss->samplers );
+ /* find output slots for depth, color */
+ qss->colorOutSlot = -1;
+ qss->depthOutSlot = -1;
+ for (i = 0; i < qss->stage.softpipe->fs->num_outputs; i++) {
+ switch (qss->stage.softpipe->fs->output_semantic_name[i]) {
+ case TGSI_SEMANTIC_POSITION:
+ qss->depthOutSlot = i;
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ qss->colorOutSlot = i;
+ break;
+ }
+ }
+
if (qs->next)
qs->next->begin(qs->next);
}