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-rw-r--r--src/mesa/drivers/dri/i965/gen8_draw_upload.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/gen8_draw_upload.c b/src/mesa/drivers/dri/i965/gen8_draw_upload.c
index 2bac5ffb058..1b48643e577 100644
--- a/src/mesa/drivers/dri/i965/gen8_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/gen8_draw_upload.c
@@ -246,13 +246,24 @@ gen8_emit_vertices(struct brw_context *brw)
}
ADVANCE_BATCH();
- for (unsigned i = 0; i < brw->vb.nr_enabled; i++) {
+ for (unsigned i = 0, j = 0; i < brw->vb.nr_enabled; i++) {
const struct brw_vertex_element *input = brw->vb.enabled[i];
const struct brw_vertex_buffer *buffer = &brw->vb.buffers[input->buffer];
+ unsigned element_index;
+
+ /* The edge flag element is reordered to be the last one in the code
+ * above so we need to compensate for that in the element indices used
+ * below.
+ */
+ if (input == gen6_edgeflag_input)
+ element_index = nr_elements - 1;
+ else
+ element_index = j++;
BEGIN_BATCH(3);
OUT_BATCH(_3DSTATE_VF_INSTANCING << 16 | (3 - 2));
- OUT_BATCH(i | (buffer->step_rate ? GEN8_VF_INSTANCING_ENABLE : 0));
+ OUT_BATCH(element_index |
+ (buffer->step_rate ? GEN8_VF_INSTANCING_ENABLE : 0));
OUT_BATCH(buffer->step_rate);
ADVANCE_BATCH();
}