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glsl: look up for transform feedback varyings after linking

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Check if shaders have transform feedback varyings also after the
post-link step.

This fixes:
KHR-GL45.enhanced_layouts.xfb_vertex_streams
piglit/spec/arb_enhanced_layouts/gs-stream-location-aliasing

v2: add claryfing comments (Timothy)

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
This commit is contained in:
Juan A. Suarez Romero
2017-07-06 08:35:37 +00:00
parent 53485c2d0e
commit c4210dec8a
1 changed files with 7 additions and 0 deletions
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7
src/compiler/glsl/glsl_to_nir.cpp
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@@ -169,9 +169,16 @@ glsl_to_nir(const struct gl_shader_program *shader_prog,
shader->info.name = ralloc_asprintf(shader, "GLSL%d", shader_prog->Name);
if (shader_prog->Label)
shader->info.label = ralloc_strdup(shader, shader_prog->Label);
/* Check for transform feedback varyings specified via the API */
shader->info.has_transform_feedback_varyings =
shader_prog->TransformFeedback.NumVarying > 0;
/* Check for transform feedback varyings specified in the Shader */
if (shader_prog->last_vert_prog)
shader->info.has_transform_feedback_varyings |=
shader_prog->last_vert_prog->sh.LinkedTransformFeedback->NumVarying > 0;
return shader;
}