[Piglit] [PATCH] arb_gpu_shader_fp64: vs-out-fs-in-double.shader_test fix

[Chris Forbes]

Reviewed-by: Chris Forbes <chrisf at ijw.co.nz>

On Fri, Sep 19, 2014 at 5:55 PM, Tapani Pälli <tapani.palli at intel.com> wrote:
> Set 'flat' interpolation qualifier for double precision input
> variable as defined by the GL_ARB_gpu_shader_fp64 spec:
>
>   "This extension does not support interpolation of double-precision
>   values; doubles used as fragment shader inputs must be qualified
>   as "flat"."
>
> Also modified vertex output side, as the test uses GLSL 1.50 where
> interpolation qualifier must match between stages.
>
> (This test still fails on Nvidia binary driver (319.32) which would
> additionally require GLSL >= 4.00 and GL_NV_gpu_shader5 for it to
> work.)
>
> Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
> ---
>  .../arb_gpu_shader_fp64/execution/vs-out-fs-in-double.shader_test    | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/tests/spec/arb_gpu_shader_fp64/execution/vs-out-fs-in-double.shader_test b/tests/spec/arb_gpu_shader_fp64/execution/vs-out-fs-in-double.shader_test
> index e0198d3..c01db72 100644
> --- a/tests/spec/arb_gpu_shader_fp64/execution/vs-out-fs-in-double.shader_test
> +++ b/tests/spec/arb_gpu_shader_fp64/execution/vs-out-fs-in-double.shader_test
> @@ -8,7 +8,7 @@ GL_ARB_gpu_shader_fp64
>  #extension GL_ARB_gpu_shader_fp64 : require
>  uniform double arg0;
>  in vec4 vertex;
> -out dvec4 dout1;
> +flat out dvec4 dout1;
>  void main()
>  {
>          gl_Position = vertex;
> @@ -19,10 +19,9 @@ void main()
>  #version 150
>  #extension GL_ARB_gpu_shader_fp64 : require
>  #
> -in dvec4 dout1;
> +flat in dvec4 dout1;
>  uniform double tolerance;
>  uniform double expected;
> -
>  void main()
>  {
>    dvec4 result = trunc(dout1);
> --
> 1.9.3
>
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