- /* See if we need to translate vertex program to TGSI form */
- if (xvp->serialNo != stvp->serialNo) {
- GLuint outAttr;
- const GLbitfield outputsWritten = stvp->Base.Base.OutputsWritten;
- GLuint numVpOuts = 0;
- GLboolean emitPntSize = GL_FALSE, emitBFC0 = GL_FALSE, emitBFC1 = GL_FALSE;
- GLbitfield usedGenerics = 0x0;
- GLbitfield usedOutputSlots = 0x0;
-
- /* Compute mapping of vertex program outputs to slots, which depends
- * on the fragment program's input->slot mapping.
- */
- for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {
- /* set defaults: */
- xvp->output_to_slot[outAttr] = UNUSED;
- xvp->output_to_semantic_name[outAttr] = TGSI_SEMANTIC_COUNT;
- xvp->output_to_semantic_index[outAttr] = 99;
-
- if (outAttr == VERT_RESULT_HPOS) {
- /* always put xformed position into slot zero */
- GLuint slot = 0;
- xvp->output_to_slot[VERT_RESULT_HPOS] = slot;
- xvp->output_to_semantic_name[outAttr] = TGSI_SEMANTIC_POSITION;
- xvp->output_to_semantic_index[outAttr] = 0;
- numVpOuts++;
- usedOutputSlots |= (1 << slot);
- }
- else if (outputsWritten & (1 << outAttr)) {
- /* see if the frag prog wants this vert output */
- GLint fpInAttrib = vp_out_to_fp_in(outAttr);
- if (fpInAttrib >= 0) {
- GLuint fpInSlot = stfp->input_to_slot[fpInAttrib];
- if (fpInSlot != ~0) {
- /* match this vp output to the fp input */
- GLuint vpOutSlot = stfp->input_map[fpInSlot];
- xvp->output_to_slot[outAttr] = vpOutSlot;
- xvp->output_to_semantic_name[outAttr] = stfp->input_semantic_name[fpInSlot];
- xvp->output_to_semantic_index[outAttr] = stfp->input_semantic_index[fpInSlot];
- numVpOuts++;
- usedOutputSlots |= (1 << vpOutSlot);
- }
- else {
-#if 0 /*debug*/
- printf("VP output %d not used by FP\n", outAttr);
-#endif
- }
- }
- else if (outAttr == VERT_RESULT_PSIZ)
- emitPntSize = GL_TRUE;
- else if (outAttr == VERT_RESULT_BFC0)
- emitBFC0 = GL_TRUE;
- else if (outAttr == VERT_RESULT_BFC1)
- emitBFC1 = GL_TRUE;
- }
-#if 0 /*debug*/
- printf("assign vp output_to_slot[%d] = %d\n", outAttr,
- xvp->output_to_slot[outAttr]);
-#endif
- }
+/**
+ * Find a translated vertex program that corresponds to stvp and
+ * has outputs matched to stfp's inputs.
+ * This performs vertex and fragment translation (to TGSI) when needed.
+ */
+static struct st_vp_varient *
+find_translated_vp(struct st_context *st,
+ struct st_vertex_program *stvp )
+{
+ struct st_vp_varient *vpv;
+ struct st_vp_varient_key key;