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-rw-r--r--src/gallium/auxiliary/draw/draw_vertex.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vertex.h b/src/gallium/auxiliary/draw/draw_vertex.h
index 9e10ada1a59..2e726e0c36d 100644
--- a/src/gallium/auxiliary/draw/draw_vertex.h
+++ b/src/gallium/auxiliary/draw/draw_vertex.h
@@ -128,6 +128,13 @@ draw_emit_vertex_attr(struct vertex_info *vinfo,
int src_index)
{
const uint n = vinfo->num_attribs;
+
+ /* If the src_index is negative, meaning it hasn't been found
+ * lets just redirect it to the first output slot */
+ if (src_index < 0) {
+ src_index = 0;
+ }
+
assert(n < Elements(vinfo->attrib));
vinfo->attrib[n].emit = emit;
vinfo->attrib[n].interp_mode = interp;