[Piglit] [PATCH 2/2] Test that varying packing can pack floats, ints, and uints together.

[Ian Romanick]

On 12/19/2012 08:30 AM, Paul Berry wrote:

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

> ---
>   .../varying-packing-mixed-types.shader_test        | 60 ++++++++++++++++++++++
>   1 file changed, 60 insertions(+)
>   create mode 100644 tests/spec/glsl-1.30/execution/varying-packing-mixed-types.shader_test
>
> diff --git a/tests/spec/glsl-1.30/execution/varying-packing-mixed-types.shader_test b/tests/spec/glsl-1.30/execution/varying-packing-mixed-types.shader_test
> new file mode 100644
> index 0000000..2956cd3
> --- /dev/null
> +++ b/tests/spec/glsl-1.30/execution/varying-packing-mixed-types.shader_test
> @@ -0,0 +1,60 @@
> +# Test that varying packing can properly pack floats, ints, and uints
> +# together into the same varying slot.
> +#
> +# In order to force this to happen, we use a shader whose "varyings"
> +# are a float, a uint, and an array of gl_MaxVaryingComponents-2 ints.
> +# All "varyings" use the "flat" interpolation type, since we don't
> +# intend to test the packing of interpolation types in this test.
> +
> +[require]
> +GLSL >= 1.30
> +
> +[vertex shader]
> +#version 130
> +uniform float f_ref;
> +uniform uint u_ref;
> +uniform int i_ref;
> +flat out float f;
> +flat out uint u;
> +flat out int ia[gl_MaxVaryingComponents - 2];
> +
> +void main()
> +{
> +	gl_Position = gl_Vertex;
> +	f = f_ref;
> +	u = u_ref;
> +	for (int i = 0; i < gl_MaxVaryingComponents - 2; i++)
> +		ia[i] = i_ref + i;
> +}
> +
> +[fragment shader]
> +#version 130
> +uniform float f_ref;
> +uniform uint u_ref;
> +uniform int i_ref;
> +flat in float f;
> +flat in uint u;
> +flat in int ia[gl_MaxVaryingComponents - 2];
> +
> +void main()
> +{
> +	bool failed = false;
> +	if (distance(f, f_ref) > 0.00001)
> +		failed = true;
> +	if (u != u_ref)
> +		failed = true;
> +	for (int i = 0; i < gl_MaxVaryingComponents - 2; i++)
> +		if (ia[i] != i_ref + i)
> +			failed = true;
> +	if (failed)
> +		gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
> +	else
> +		gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
> +}
> +
> +[test]
> +uniform int i_ref -1000
> +uniform uint u_ref 0xfedcba98
> +uniform float f_ref 3.1415926
> +draw rect -1 -1 2 2
> +probe all rgba 0.0 1.0 0.0 1.0
>