[Piglit] [PATCH] glsl-1.30: add linker test for inter stage in/out vars usage

[Vadim Shovkoplias]

Hi Timothy,

Thanks for the review! Can you please push this patch ?

вт, 28 авг. 2018 г. в 3:45, Timothy Arceri <tarceri at itsqueeze.com>:

> Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>
>
> On 27/08/18 22:19, Vadym Shovkoplias wrote:
> > This test exposes a Mesa GLSL linker bug. The test fails with the
> > following error message:
> >
> >     error: fragment shader input `foo' has no matching output in the
> previous
> >            stage
> >
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105731
> > Signed-off-by: Vadym Shovkoplias <vadym.shovkoplias at globallogic.com>
> > ---
> >   ...rstage-multiple-vertex-objects.shader_test | 33 +++++++++++++++++++
> >   1 file changed, 33 insertions(+)
> >   create mode 100644
> tests/spec/glsl-1.30/linker/interstage-multiple-vertex-objects.shader_test
> >
> > diff --git
> a/tests/spec/glsl-1.30/linker/interstage-multiple-vertex-objects.shader_test
> b/tests/spec/glsl-1.30/linker/interstage-multiple-vertex-objects.shader_test
> > new file mode 100644
> > index 000000000..dd168d434
> > --- /dev/null
> > +++
> b/tests/spec/glsl-1.30/linker/interstage-multiple-vertex-objects.shader_test
> > @@ -0,0 +1,33 @@
> > +# Exercises a Mesa GLSL linker bug.
> > +#
> > +# Output "foo" variable is not used in the "main" vertex shader
> > +# but used in fragment shader
> > +
> > +[require]
> > +GLSL >= 1.30
> > +
> > +[vertex shader]
> > +out vec4 foo;
> > +void unused()
> > +{
> > +    foo=vec4(1);
> > +}
> > +
> > +[vertex shader]
> > +in vec4 pos;
> > +void main()
> > +{
> > +    gl_Position = pos;
> > +}
> > +
> > +[fragment shader]
> > +in vec4 foo;
> > +out vec4 color;
> > +
> > +void main()
> > +{
> > +    gl_FragColor=foo;
> > +}
> > +
> > +[test]
> > +link success
> >
>
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