Attachment 122690 Details for Bug 92760 – Sample test showcasing non-uniform control flow problems in align16

Sample test showcasing non-uniform control flow problems in align16

fp64-align16-non-uniform-cf.shader_test (text/plain), 1.29 KB, created by Iago Toral on 2016-04-04 09:19:12 UTC

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Creator: Iago Toral

Created: 2016-04-04 09:19:12 UTC

Size: 1.29 KB

patch

obsolete

># Tests non-uniform control flow in the vertex shader
># with fp64 functionality.
>#
># The Intel vec4 backend used in gen7 for VS programs
># has peculiarities related to non-uniform control-flow
># with fp64 code. This test should verify that these
># situations are handled correctly.
>#
># Expected result: red to green horizontal gradient
>
>[require]
>GLSL >= 1.50
>GL_ARB_gpu_shader_fp64
>
>[vertex shader]
>#extension GL_ARB_gpu_shader_fp64 : require
>#extension GL_ARB_explicit_attrib_location : require
>
>layout(location=0) in vec4 pos;
>layout(location=1) in float col;
>uniform dvec2 u0;
>uniform dvec2 u1;
>
>out vec4 color;
>
>void main()
>{
>  dvec2 res;
>  gl_Position = pos;
>
>  if (col == 0.0f) {
>    res = 2.0lf * (u0 + u1);             // res = (1, 1) : yellow
>    res.y -= 1.0;                        // res = (1, 0) : red
>  } else {
>    res = u1 - u0 - dvec2(0.3lf, 0.1lf); // res = (0, 0) : black
>    res.y += 1.0lf;                      // res = (0, 1) : green
>  }
>
>  color = vec4(res.x, res.y, 0, 1);
>}
>
>[fragment shader]
>varying vec4 color;
>
>void main()
>{
>  gl_FragColor = color;
>}
>
>[vertex data]
>pos/float/2   col/float/1
>-1.0 -1.0     1.0
> 1.0 -1.0     0.0
>-1.0  1.0     0.0
> 1.0  1.0     0.0
>
>[test]
>clear color 0.0 0.0 1.0 1.0
>clear
>uniform dvec2 u0 0.1 0.2
>uniform dvec2 u1 0.4 0.3
>draw arrays GL_TRIANGLE_STRIP 0 4

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Attachments on bug 92760: 120957 | 122690

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