Giovanni Mascellani : tests: Test sign rules for float modulus.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: b6a6a927a73c63a8cfa5362eb60753d9e66a462d
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/b6a6a927a73c63a8cfa5362eb60753...

Author: Giovanni Mascellani 
Date:   Fri Oct 14 15:35:39 2022 +0200

tests: Test sign rules for float modulus.

---

tests/arithmetic-float.shader_test | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/tests/arithmetic-float.shader_test b/tests/arithmetic-float.shader_test
index 36838d95..558d5d10 100644
--- a/tests/arithmetic-float.shader_test
+++ b/tests/arithmetic-float.shader_test
@@ -24,6 +24,32 @@ float4 main() : SV_TARGET
 draw quad
 probe all rgba (5.0, 5.0, -5.0, 3.0)

+[pixel shader]
+float4 main() : SV_TARGET
+{
+    float x = 42;
+    float y = 5;
+
+    return float4(x % y, -x % y, x % -y, -x % -y);
+}
+
+[test]
+draw quad
+probe all rgba (2.0, -2.0, 2.0, -2.0) 16
+
+[pixel shader]
+float4 main() : SV_TARGET
+{
+    float x = 45;
+    float y = 5;
+
+    return float4(x % y, -x % y, x % -y, -x % -y);
+}
+
+[test]
+draw quad
+probe all rgba (0.0, 0.0, 0.0, 0.0)
+
 [require]
 % Infinities are not allowed in SM1
 shader model >= 4.0