[Mesa-dev] [PATCH] glsl: look up for transform feedback varyings after linking

[Marek Olšák]

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Thu, Jul 6, 2017 at 11:12 AM, Juan A. Suarez Romero
<jasuarez at igalia.com> wrote:
> 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
> ---
>  src/compiler/glsl/glsl_to_nir.cpp | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
> index 2153004..fad08ec 100644
> --- a/src/compiler/glsl/glsl_to_nir.cpp
> +++ b/src/compiler/glsl/glsl_to_nir.cpp
> @@ -171,6 +171,9 @@ glsl_to_nir(const struct gl_shader_program *shader_prog,
>        shader->info.label = ralloc_strdup(shader, shader_prog->Label);
>     shader->info.has_transform_feedback_varyings =
>        shader_prog->TransformFeedback.NumVarying > 0;
> +   if (shader_prog->last_vert_prog)
> +      shader->info.has_transform_feedback_varyings |=
> +         shader_prog->last_vert_prog->sh.LinkedTransformFeedback->NumVarying > 0;
>
>     return shader;
>  }
> --
> 2.9.4
>
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