[Piglit] [PATCH] arb_fcc: Add another test for a gl_FragCoord redeclaration edge case

[Anuj Phogat]

On Sat, Apr 12, 2014 at 10:09 PM, Chris Forbes <chrisf at ijw.co.nz> wrote:
> Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
> ---
>  .../compiler/redeclaration-around-use.frag         | 31 ++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
>  create mode 100644 tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag
>
> diff --git a/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag b/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag
> new file mode 100644
> index 0000000..50dc20f
> --- /dev/null
> +++ b/tests/spec/arb_fragment_coord_conventions/compiler/redeclaration-around-use.frag
> @@ -0,0 +1,31 @@
> +/* [config]
> + * expect_result: pass
> + * glsl_version: 1.10
> + * require_extensions: GL_ARB_fragment_coord_conventions
> + * check_link: false
> + * [end config]
> + */
> +
> +/*
> + * Section 4.3.x.1 (Input Layout Qualifiers) of the
> + * ARB_fragment_coord_conventions spec says:
> + *
> + *     "Within any shader, the first redeclarations of gl_FragCoord must appear
> + *     before any use of gl_FragCoord."
> + */
> +
> +#version 110
> +
> +#extension GL_ARB_fragment_coord_conventions : require
> +
> +in vec4 gl_FragCoord; //first redeclaration: before use.
> +
> +vec2 a = gl_FragCoord.xy;
> +
> +in vec4 gl_FragCoord; //this redeclaration is ok, because it does not
> +                      //conflict, and the first redeclaration is before use.
> +
> +void main()
> +{
> +       gl_FragColor = gl_FragCoord.xyzz;
> +}

I added this test under spec/glsl-1.50/compiler/fragment_coord_conventions in:
[PATCH 1/2] glsl-1.50: Add compiler tests to verify gl_FragCoord redeclarations
Patch is long pending for review. See "use-between-redeclarations-2.frag" test.

> --
> 1.9.2
>
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