OpenHarmony/third_party_mesa3d
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Fix problem in mapping vertex program outputs (found with "spring" game engine)

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If the vertex program writes to an output that's not consumed by the
fragment program, map the vp output to an unused slot.
This commit is contained in:
Brian
2008-01-31 14:05:04 -07:00
parent acb81374c1
commit 86787043fa
1 changed files with 6 additions and 4 deletions
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4
src/mesa/state_tracker/st_atom_shader.c
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@@ -226,10 +226,12 @@ find_translated_vp(struct st_context *st,
GLint fpInAttrib = vp_out_to_fp_in(outAttr);
if (fpInAttrib >= 0) {
GLuint fpInSlot = stfp->input_to_slot[fpInAttrib];
if (fpInSlot != ~0) {
GLuint vpOutSlot = stfp->fs->state.input_map[fpInSlot];
xvp->output_to_slot[outAttr] = vpOutSlot;
numVpOuts++;
}
}
else if (outAttr == VERT_RESULT_PSIZ ||
outAttr == VERT_RESULT_BFC0 ||
outAttr == VERT_RESULT_BFC1) {
@@ -247,7 +249,7 @@ find_translated_vp(struct st_context *st,
* We could use this info to do dead code elimination in the
* vertex program.
*/
dummySlot = stfp->num_input_slots;
dummySlot = numVpOuts;
/* Map vert program outputs that aren't used to the dummy slot */
for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {