From: Roland Scheidegger <srol...@vmware.com> Similar to glsl-fs-main-return (and glsl-vs-main-return), this is testing using return in main. Contrary to the these other tests, this hits both the cases where the return path is and is NOT taken (the gallivm code got it wrong and always did an early exit which got unnoticed by the existing tests, see https://bugs.freedesktop.org/show_bug.cgi?id=62357).
v2: use mod() instead of integer arithmetic suggested by Ian Romanick. This gets rid of the glsl 1.30 requirement. And do minor simplifications. --- .../glsl-fs-main-return-conditional.shader_test | 28 ++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 tests/shaders/glsl-fs-main-return-conditional.shader_test diff --git a/tests/shaders/glsl-fs-main-return-conditional.shader_test b/tests/shaders/glsl-fs-main-return-conditional.shader_test new file mode 100644 index 0000000..173ae03 --- /dev/null +++ b/tests/shaders/glsl-fs-main-return-conditional.shader_test @@ -0,0 +1,28 @@ +[require] +GLSL >= 1.10 + +[vertex shader] +void main() +{ + gl_Position = gl_Vertex; +} + +[fragment shader] +const vec4 v = vec4(0., 1., 0., 1.); + +void main() +{ + gl_FragColor = v; + if (mod(gl_FragCoord.x, 2.0) >= 1.0) + return; // return for every second pixel + + gl_FragColor = vec4(1.0) - v; +} + +[test] +draw rect -1 -1 2 2 +probe rgb 0 0 1 0 1 +probe rgb 1 0 0 1 0 +probe rgb 2 0 1 0 1 +probe rgb 3 0 0 1 0 + -- 1.7.9.5 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/piglit