[Piglit] [PATCH] Test a corner case involving arrays, structs, and interface blocks.

[Ian Romanick]

On 10/15/2013 11:06 AM, Paul Berry wrote:
> This patch exercises the same corner case as
> https://bugs.freedesktop.org/show_bug.cgi?id=70368.

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

> ---
>  .../interface-block-struct-nesting.shader_test     | 54 ++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 tests/spec/glsl-1.50/execution/interface-block-struct-nesting.shader_test
> 
> diff --git a/tests/spec/glsl-1.50/execution/interface-block-struct-nesting.shader_test b/tests/spec/glsl-1.50/execution/interface-block-struct-nesting.shader_test
> new file mode 100644
> index 0000000..a51b8b4
> --- /dev/null
> +++ b/tests/spec/glsl-1.50/execution/interface-block-struct-nesting.shader_test
> @@ -0,0 +1,54 @@
> +# This test exercises a particular corner case involving interface
> +# blocks and structs which is broken as of Mesa 975c6ce.
> +#
> +# The corner case occurs when an unnamed interface block contains a
> +# struct (or an array of structs), and the struct contains an array.
> +
> +[require]
> +GLSL >= 1.50
> +
> +[vertex shader]
> +struct A {
> +  float b[2];
> +};
> +out Block {
> +  A a;
> +  A aa[2];
> +};
> +in vec4 piglit_vertex;
> +
> +void main()
> +{
> +  gl_Position = piglit_vertex;
> +  a.b[0] = 1.0;
> +  a.b[1] = 2.0;
> +  aa[0].b[0] = 3.0;
> +  aa[0].b[1] = 4.0;
> +  aa[1].b[0] = 5.0;
> +  aa[1].b[1] = 6.0;
> +}
> +
> +[fragment shader]
> +struct A {
> +  float b[2];
> +};
> +in Block {
> +  A a;
> +  A aa[2];
> +};
> +
> +void main()
> +{
> +  bool ok = true;
> +  if (a.b[0] != 1.0) ok = false;
> +  if (a.b[1] != 2.0) ok = false;
> +  if (aa[0].b[0] != 3.0) ok = false;
> +  if (aa[0].b[1] != 4.0) ok = false;
> +  if (aa[1].b[0] != 5.0) ok = false;
> +  if (aa[1].b[1] != 6.0) ok = false;
> +  gl_FragColor = ok ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);
> +}
> +
> +[test]
> +draw rect -1 -1 2 2
> +probe all rgba 0.0 1.0 0.0 1.0
>