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glsl: don't try to lower non-gl builtins as if they were gl_FragData

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If a shader has an output array, it will get treated as though it were
gl_FragData and rewritten into gl_out_FragData instances. We only want
this to happen on the actual gl_FragData and not everything else.

This is a small part of the problem pointed out by the below bug.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96765
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "11.2 12.0" <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Ilia Mirkin 2016-07-01 19:10:36 -04:00
parent 795d8dff89
commit a37e46323c
1 changed files with 2 additions and 1 deletions
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3
src/compiler/glsl/opt_dead_builtin_varyings.cpp
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@ -85,7 +85,8 @@ public:
{
ir_variable *var = ir->variable_referenced();
if (!var || var->data.mode != this->mode || !var->type->is_array())
if (!var || var->data.mode != this->mode || !var->type->is_array() ||
!is_gl_identifier(var->name))
return visit_continue;
/* Only match gl_FragData[], not gl_SecondaryFragDataEXT[] */