[Piglit] [PATCH] Add test for accessing a varying array with a large negative offset

[Marek Olšák]

Well, technically speaking, this should be in
spec/glsl-1.10/execution/variable-indexing.

Marek

On Fri, Mar 20, 2015 at 10:34 AM, Marek Olšák <maraeo at gmail.com> wrote:
> Reviewed-by: Marek Olšák <marek.olsak at amd.com>
>
> Marek
>
> On Fri, Mar 20, 2015 at 2:41 AM, Tom Stellard <thomas.stellard at amd.com> wrote:
>> From: Marek Olšák <marek.olsak at amd.com>
>>
>> This tests for a bug causing either a crash or a mis-compile in the
>> radeonsi compiler.
>>
>> Tom Stellard:
>>   - Decrease the offset to guarantee we hit the bug.
>> ---
>>  ...rying-array-float-negative-index-rd.shader_test | 77 ++++++++++++++++++++++
>>  1 file changed, 77 insertions(+)
>>  create mode 100644 tests/shaders/fs-varying-array-float-negative-index-rd.shader_test
>>
>> diff --git a/tests/shaders/fs-varying-array-float-negative-index-rd.shader_test b/tests/shaders/fs-varying-array-float-negative-index-rd.shader_test
>> new file mode 100644
>> index 0000000..3f8926f
>> --- /dev/null
>> +++ b/tests/shaders/fs-varying-array-float-negative-index-rd.shader_test
>> @@ -0,0 +1,77 @@
>> +[require]
>> +GLSL >= 1.10
>> +
>> +[vertex shader]
>> +varying float m1[4];
>> +varying float m2[4];
>> +
>> +void main()
>> +{
>> +    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
>> +
>> +    m1[0] = 1.0;
>> +    m1[1] = 2.0;
>> +    m1[2] = 3.0;
>> +    m1[3] = 4.0;
>> +    m2[0] = 5.0;
>> +    m2[1] = 6.0;
>> +    m2[2] = 7.0;
>> +    m2[3] = 8.0;
>> +}
>> +
>> +[fragment shader]
>> +uniform int index;
>> +uniform float expect;
>> +varying float m1[4];
>> +varying float m2[4];
>> +
>> +void main()
>> +{
>> +    gl_FragColor = ((index >= 512 ? m2[index-512] : m1[index]) == expect)
>> +        ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);
>> +}
>> +
>> +[test]
>> +clear color 0.5 0.5 0.5 0.5
>> +clear
>> +ortho
>> +
>> +uniform int index 0
>> +uniform float expect 1
>> +draw rect 5 5 10 10
>> +probe rgb 10 10 0.0 1.0 0.0
>> +
>> +uniform int index 1
>> +uniform float expect 2
>> +draw rect 30 5 10 10
>> +probe rgb 35 10 0.0 1.0 0.0
>> +
>> +uniform int index 2
>> +uniform float expect 3
>> +draw rect 55 5 10 10
>> +probe rgb 60 10 0.0 1.0 0.0
>> +
>> +uniform int index 3
>> +uniform float expect 4
>> +draw rect 80 5 10 10
>> +probe rgb 85 10 0.0 1.0 0.0
>> +
>> +uniform int index 512
>> +uniform float expect 5
>> +draw rect 105 5 10 10
>> +probe rgb 110 10 0.0 1.0 0.0
>> +
>> +uniform int index 513
>> +uniform float expect 6
>> +draw rect 130 5 10 10
>> +probe rgb 135 10 0.0 1.0 0.0
>> +
>> +uniform int index 514
>> +uniform float expect 7
>> +draw rect 155 5 10 10
>> +probe rgb 160 10 0.0 1.0 0.0
>> +
>> +uniform int index 515
>> +uniform float expect 8
>> +draw rect 180 5 10 10
>> +probe rgb 185 10 0.0 1.0 0.0
>> --
>> 2.0.4
>>
>> _______________________________________________
>> Piglit mailing list
>> Piglit at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/piglit