---
src/gallium/auxiliary/tgsi/tgsi_from_mesa.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c
b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c
index b7a21f29ba..31be7d946b 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_from_mesa.c
@@ -55,20 +55,24 @@ tgsi_get_generic_gl_varying_index(gl_varying_slot attr,
/**
* Determine the semantic name and index used for the given varying.
*/
void
tgsi_get_gl_varying_semantic(gl_varying_slot attr,
bool needs_texcoord_semantic,
unsigned *semantic_name,
unsigned *semantic_index)
{
switch (attr) {
+ case VARYING_SLOT_PRIMITIVE_ID:
+ *semantic_name = TGSI_SEMANTIC_PRIMID;
+ *semantic_index = 0;
+ break;
case VARYING_SLOT_POS:
*semantic_name = TGSI_SEMANTIC_POSITION;
*semantic_index = 0;
break;
case VARYING_SLOT_COL0:
*semantic_name = TGSI_SEMANTIC_COLOR;
*semantic_index = 0;
break;
case VARYING_SLOT_COL1:
*semantic_name = TGSI_SEMANTIC_COLOR;
--
2.14.3
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