Cc: Jason Ekstrand <ja...@jlekstrand.net> Cc: Mark Janes <mark.a.ja...@intel.com> --- .../fs-loop-unrolled-divide-by-zero.shader_test | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 tests/spec/glsl-1.10/linker/fs-loop-unrolled-divide-by-zero.shader_test
diff --git a/tests/spec/glsl-1.10/linker/fs-loop-unrolled-divide-by-zero.shader_test b/tests/spec/glsl-1.10/linker/fs-loop-unrolled-divide-by-zero.shader_test new file mode 100644 index 000000000..761657c3c --- /dev/null +++ b/tests/spec/glsl-1.10/linker/fs-loop-unrolled-divide-by-zero.shader_test @@ -0,0 +1,31 @@ +# From the GLSL 4.60 spec Section 5.9 (Expressions): +# +# "Dividing by zero does not cause an exception but does +# result in an unspecified value." +# +# Here we make sure that constant evaluation doesn't crash on +# a divide by zero. +# +[require] +GLSL >= 1.10 + +[vertex shader passthrough] + +[fragment shader] +void main() +{ + int j = 0; + + // We use a loop specifically to avoid Mesa's GLSL IR + // from doing the constant evaluating. In this case + // we want to test NIR which exclusively does loop + // unrolling on some drivers and will therefore end + // up doing the constant evaluation. + for (int i = 0; i < 4; i++) + j += 42/i; + + gl_FragColor.x = 255.0f / float(j); +} + +[test] +link success -- 2.14.3 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/piglit