draw: setup instance ID for SSE generator

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/draw/draw_vs_sse.c b/src/gallium/auxiliary/draw/draw_vs_sse.c
index 0b0c6077c6f..672efe25cca 100644
--- a/src/gallium/auxiliary/draw/draw_vs_sse.c
+++ b/src/gallium/auxiliary/draw/draw_vs_sse.c
@@ -71,6 +71,12 @@ vs_sse_prepare( struct draw_vertex_shader *base,
    struct tgsi_exec_machine *machine = shader->machine;
 
    machine->Samplers = draw->vs.samplers;
+
+   if (base->info.uses_instanceid) {
+      unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_INSTANCEID];
+      assert(i < Elements(machine->SystemValue));
+      machine->SystemValue[i][0] = base->draw->instance_id;
+   }
 }