From: Dave Airlie <airl...@redhat.com>
This gets the basevertex from the draw depending on whether
it's an indexed or non-indexed draw.
We still fail a transform feedback test for vertex id, as
the vertex id actually an index id, and isn't getting translated
properly to a vertex id, suggestions on how/where to fix that welcome.
---
src/gallium/auxiliary/draw/draw_vs_exec.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c
b/src/gallium/auxiliary/draw/draw_vs_exec.c
index 4f11ac7506c..dbd7aa551eb 100644
--- a/src/gallium/auxiliary/draw/draw_vs_exec.c
+++ b/src/gallium/auxiliary/draw/draw_vs_exec.c
@@ -128,18 +128,17 @@ vs_exec_run_linear(struct draw_vertex_shader *shader,
input[slot][3]);
}
#endif
+ int basevertex = shader->draw->pt.user.eltSize ?
shader->draw->pt.user.eltBias : shader->draw->start_index;
if (shader->info.uses_vertexid) {
unsigned vid = machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID];
assert(vid < ARRAY_SIZE(machine->SystemValue));
- machine->SystemValue[vid].xyzw[0].i[j] = i + j;
- /* XXX this should include base vertex. Where to get it??? */
+ machine->SystemValue[vid].xyzw[0].i[j] = i + j + basevertex;
}
if (shader->info.uses_basevertex) {
unsigned vid =
machine->SysSemanticToIndex[TGSI_SEMANTIC_BASEVERTEX];
assert(vid < ARRAY_SIZE(machine->SystemValue));
- machine->SystemValue[vid].xyzw[0].i[j] = 0;
- /* XXX Where to get it??? */
+ machine->SystemValue[vid].xyzw[0].i[j] = basevertex;
}
if (shader->info.uses_vertexid_nobase) {
unsigned vid =
machine->SysSemanticToIndex[TGSI_SEMANTIC_VERTEXID_NOBASE];
--
2.20.1
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
