Mesa (master): mesa/st: Allow geometry shaders without gl_Position export.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 20cad7fd6f6cbd8fc330c7bc54e8e1c62ae5f431
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=20cad7fd6f6cbd8fc330c7bc54e8e1c62ae5f431

Author: Fabian Bieler <fabianbieler at fastmail.fm>
Date:   Thu May 30 00:54:55 2013 +0200

mesa/st: Allow geometry shaders without gl_Position export.

>From the ARB_geometry_shader4 spec (section Geometry Shader outputs):
"The built-in special variable gl_Position is intended to hold the
homogeneous vertex position. Writing gl_Position is optional."

Signed-off-by: Dave Airlie <airlied at redhat.com>
Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/mesa/state_tracker/st_program.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index 925ea80..5efd614 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -1031,8 +1031,6 @@ st_translate_geometry_program(struct st_context *st,
       }
    }
 
-   assert(gs_output_semantic_name[0] == TGSI_SEMANTIC_POSITION);
-
    /* find max output slot referenced to compute gs_num_outputs */
    for (attr = 0; attr < VARYING_SLOT_MAX; attr++) {
       if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)