Mesa (master): llvmpipe: Fix llvmpipe_create_gs_state.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: bbdefabfc9922d4f4a796c72008f0d40d086c6da
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=bbdefabfc9922d4f4a796c72008f0d40d086c6da

Author: Zack Rusin <zackr at vmware.com>
Date:   Wed Mar 26 16:08:25 2014 +0000

llvmpipe: Fix llvmpipe_create_gs_state.

Revert unintended behaviour change from commit
b995a010e688bc4d4557e973e5e28091c378e881.

Tested-by: José Fonseca <jfonseca at vmware.com>

---

 src/gallium/drivers/llvmpipe/lp_state_gs.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_state_gs.c b/src/gallium/drivers/llvmpipe/lp_state_gs.c
index c94afed..7ea7a39 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_gs.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_gs.c
@@ -60,9 +60,11 @@ llvmpipe_create_gs_state(struct pipe_context *pipe,
    state->no_tokens = !templ->tokens;
    memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
 
-   state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
-   if (state->dgs == NULL) {
-      goto no_dgs;
+   if (templ->tokens) {
+      state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
+      if (state->dgs == NULL) {
+         goto no_dgs;
+      }
    }
 
    return state;