Mesa (master): draw: setup instance ID for SSE generator

[Brian Paul]

Module: Mesa
Branch: master
Commit: 2d62fb6c3f7dd7261513253767cc63ff00fad9bb
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d62fb6c3f7dd7261513253767cc63ff00fad9bb

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Dec  8 19:00:44 2010 -0700

draw: setup instance ID for SSE generator

---

 src/gallium/auxiliary/draw/draw_vs_sse.c |    6 ++++++
 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 0b0c607..672efe2 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;
+   }
 }