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author | Matt Turner <mattst88@gmail.com> | 2013-09-23 15:04:16 -0700 |
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committer | Matt Turner <mattst88@gmail.com> | 2013-10-04 13:26:25 -0700 |
commit | 6c315401d294257bfc7bb6da3ade47cb958a5004 (patch) | |
tree | 91a3be84f2609e50feb8b6fec105fb38e9b65a3c | |
parent | b428b54df649815993c2708d97eb577c5be7c897 (diff) |
arb_gpu_shader5: Test using only the subtraction from usubBorrow in the vs.
-rw-r--r-- | tests/spec/arb_gpu_shader5/execution/built-in-functions/vs-usubBorrow-only-sub.shader_test | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/spec/arb_gpu_shader5/execution/built-in-functions/vs-usubBorrow-only-sub.shader_test b/tests/spec/arb_gpu_shader5/execution/built-in-functions/vs-usubBorrow-only-sub.shader_test new file mode 100644 index 000000000..0fccb4be3 --- /dev/null +++ b/tests/spec/arb_gpu_shader5/execution/built-in-functions/vs-usubBorrow-only-sub.shader_test @@ -0,0 +1,56 @@ +[require] +GLSL >= 1.50 +GL_ARB_gpu_shader5 + +[vertex shader] +#extension GL_ARB_gpu_shader5 : enable + +in vec4 piglit_vertex; +out vec4 color; + +uniform uvec4 x, y; +uniform uvec4 expected_diff; + +void main() +{ + gl_Position = piglit_vertex; + + color = vec4(0.0, 1.0, 0.0, 1.0); + + /* Test that optimization passes like dead code elimination don't + * eliminate the subtraction if the borrow result isn't used. + */ + uvec4 borrow; + uvec4 diff = usubBorrow(x, y, borrow); + + if (diff != expected_diff) + color.r = 1.0; +} + +[fragment shader] +in vec4 color; +out vec4 frag_color; + +void main() +{ + frag_color = color; +} + +[test] +uniform uvec4 x 1 2 3 4 +uniform uvec4 y 0 1 2 3 +uniform uvec4 expected_diff 1 1 1 1 +draw rect -1 -1 2 2 +probe all rgba 0.0 1.0 0.0 1.0 + +uniform uvec4 x 4 3 2 1 +uniform uvec4 y 4 4 4 4 +uniform uvec4 expected_diff 0 0xFFFFFFFF 0xFFFFFFFE 0xFFFFFFFD +draw rect -1 -1 2 2 +probe all rgba 0.0 1.0 0.0 1.0 + +uniform uvec4 x 0xFFFFFFFE 0xFFFFFFFF 0x80000000 0 +uniform uvec4 y 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0 +uniform uvec4 expected_diff 0xFFFFFFFF 0 0x80000001 0 +draw rect -1 -1 2 2 +probe all rgba 0.0 1.0 0.0 1.0 |