-
-/**
- * Translate fragment program if needed.
- */
-static void
-translate_fp(struct st_context *st,
- struct st_fragment_program *stfp)
-{
- if (!stfp->state.tokens) {
- assert(stfp->Base.Base.NumInstructions > 0);
-
- st_translate_fragment_program(st, stfp);
- }
-}
-
-
-
-/**
- * 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;
-
- /* Nothing in our key yet. This will change:
- */
- memset(&key, 0, sizeof key);
-
- /* When this is true, we will add an extra input to the vertex
- * shader translation (for edgeflags), an extra output with
- * edgeflag semantics, and extend the vertex shader to pass through
- * the input to the output. We'll need to use similar logic to set
- * up the extra vertex_element input for edgeflags.
- * _NEW_POLYGON, ST_NEW_EDGEFLAGS_DATA
- */
- key.passthrough_edgeflags = (st->vertdata_edgeflags && (
- st->ctx->Polygon.FrontMode != GL_FILL ||
- st->ctx->Polygon.BackMode != GL_FILL));
-
-
- /* Do we need to throw away old translations after a change in the
- * GL program string?
- */
- if (stvp->serialNo != stvp->lastSerialNo) {
- /* These may have changed if the program string changed.
- */
- st_prepare_vertex_program( st, stvp );
-
- /* We are now up-to-date:
- */
- stvp->lastSerialNo = stvp->serialNo;
- }
-
- /* See if we've got a translated vertex program whose outputs match
- * the fragment program's inputs.
- */
- for (vpv = stvp->varients; vpv; vpv = vpv->next) {
- if (memcmp(&vpv->key, &key, sizeof key) == 0) {
- break;
- }
- }
-
- /* No? Perform new translation here. */
- if (!vpv) {
- vpv = st_translate_vertex_program(st, stvp, &key);
- if (!vpv)
- return NULL;
-
- vpv->next = stvp->varients;
- stvp->varients = vpv;
- }
-
- return vpv;
-}
-
-