--- .../built-in-functions/const-ldexp.shader-test | 62 ++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 tests/spec/arb_gpu_shader5/execution/built-in-functions/const-ldexp.shader-test
diff --git a/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-ldexp.shader-test b/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-ldexp.shader-test new file mode 100644 index 0000000..5a6752c --- /dev/null +++ b/tests/spec/arb_gpu_shader5/execution/built-in-functions/const-ldexp.shader-test @@ -0,0 +1,62 @@ +[require] +GLSL >= 1.50 +GL_ARB_gpu_shader5 + +[vertex shader] +in vec4 vertex; + +void main() { + gl_Position = vertex; +} + +[fragment shader] +#extension GL_ARB_gpu_shader5 : enable + +void bad_constant_folding(); + +out vec4 color; + +void main() +{ + /* Green if both pass. */ + color = vec4(0.0, 1.0, 0.0, 1.0); + + /* Compare the results after going through floatBitsToInt() allows us + * to distinguish -0.0f from 0.0f. + */ + if (floatBitsToInt(vec4(0.0, -0.0, 0.5, -0.5)) != + floatBitsToInt(ldexp(vec4(0.0, -0.0, 0.5, -0.5), ivec4(0)))) { + bad_constant_folding(); + } + if (floatBitsToInt(vec4(0.49, 1.0, 25.0, 100.0)) != + floatBitsToInt(ldexp(vec4(0.98, 0.5, 0.78125, 0.78125), ivec4(-1, 1, 5, 7)))) { + bad_constant_folding(); + } + if (floatBitsToInt(vec4(1.1754944e-38, -1.1754944e-38, 3.40282347e38, -3.40282347e38)) != + floatBitsToInt(ldexp(vec4(0.5, -0.5, 0.999999940, -0.999999940), ivec4(-125, -125, 128, 128)))) { + bad_constant_folding(); + } + if (floatBitsToInt(vec4(0.5, -0.5, 0.999999940, -0.999999940)) != + floatBitsToInt(ldexp(vec4(1.1754944e-38, -1.1754944e-38, 3.40282347e38, -3.40282347e38), ivec4(125, 125, -128, -128)))) { + bad_constant_folding(); + } + if (floatBitsToInt(vec4(0.0, -0.0, 0.0, -0.0)) != + floatBitsToInt(ldexp(vec4(0.0, -0.0, 0.5, -0.5), ivec4(-127)))) { + bad_constant_folding(); + } + if (floatBitsToInt(vec4(0.0, -0.0, 0.0, -0.0)) != + floatBitsToInt(ldexp(vec4(1.1754944e-38, -1.1754944e-38, 3.40282347e38, -3.40282347e38), ivec4(-1, -1, -255, -255)))) { + bad_constant_folding(); + } +} + +[vertex data] +vertex/float/2 +-1.0 -1.0 + 1.0 -1.0 + 1.0 1.0 +-1.0 1.0 + +[test] +draw arrays GL_TRIANGLE_FAN 0 4 +probe all rgba 0.0 1.0 0.0 1.0 -- 1.8.3.2 _______________________________________________ Piglit mailing list Piglit@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/piglit