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glsl/linker: Fix unmatched TCS outputs being reduced to local variable

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Always match TCS outputs since they are shared by all invocations
within the patch and should not be converted to local variables.

This is one of the issues found in Downward.

Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104297
This commit is contained in:
Danylo Piliaiev
2019-01-02 15:55:08 +02:00
committed by Timothy Arceri
parent db3b6b6bca
commit 9f29d90327
1 changed files with 6 additions and 0 deletions
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src/compiler/glsl/linker.cpp
+6
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@@ -3185,6 +3185,12 @@ match_explicit_outputs_to_inputs(gl_linked_shader *producer,
const unsigned idx = var->data.location - VARYING_SLOT_VAR0;
if (explicit_locations[idx][var->data.location_frac] == NULL)
explicit_locations[idx][var->data.location_frac] = var;
/* Always match TCS outputs. They are shared by all invocations
* within a patch and can be used as shared memory.
*/
if (producer->Stage == MESA_SHADER_TESS_CTRL)
var->data.is_unmatched_generic_inout = 0;
}
}