Francisco Casas : tests: Test x + 0 and x * 1 indentities.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: c43c900a300b0c3acf619bceeecac68b72414b9e
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/c43c900a300b0c3acf619bceeecac6...

Author: Francisco Casas 
Date:   Tue Apr 23 16:35:50 2024 -0400

tests: Test x + 0 and x * 1 indentities.

---

tests/hlsl/arithmetic-float-uniform.shader_test | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/tests/hlsl/arithmetic-float-uniform.shader_test b/tests/hlsl/arithmetic-float-uniform.shader_test
index a49d3f00..0797b237 100644
--- a/tests/hlsl/arithmetic-float-uniform.shader_test
+++ b/tests/hlsl/arithmetic-float-uniform.shader_test
@@ -187,3 +187,21 @@ uniform 4 double2 1.625 -5.0
 uniform 8 double2 1.00000007 -1.0
 todo(sm<6) draw quad
 probe all rgba (2.62500024, 209.5, 0.0, 0.0)
+
+
+% Test result when instructions might be removed because they are identities such as (+0) or (*1).
+[pixel shader]
+float4 a;
+
+float4 main() : sv_target
+{
+    float4 zero = {0, 0, 0, 0};
+    float4 one = {1, 1, 1, 1};
+
+    return a + zero + a * one + zero * one;
+}
+
+[test]
+uniform 0 float4 0.2 0.3 9.1 3.2
+todo(glsl) draw quad
+probe all rgba (0.4, 0.6, 18.2, 6.4)