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mesa/st: Allow geometry shaders without gl_Position export.

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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@redhat.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Fabian Bieler
2013-05-30 00:54:55 +02:00
committed by Dave Airlie
parent 9bfa475684
commit 20cad7fd6f
1 changed files with 0 additions and 2 deletions
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src/mesa/state_tracker/st_program.c
-2
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@@ -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)