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vkd3d-shader/hlsl: Fold some general unary identities.

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The following unary identities are applied:

  ||x|| -> |x|
  |-x| -> |x|
  ~(~x) -> x
  f(g(x)) -> g(x), where f(), g() are floor() or ceil() functions.
  -(-x) -> x
  !!x -> x
  !(x == y) -> x != y, !(x < y) -> x >= y, etc (for integers).
This commit is contained in:
Shaun Ren
2025-07-28 21:51:09 -04:00
committed by Henri Verbeet
parent 45e549c1b2
commit 245430002a
Notes: Henri Verbeet 2025-08-21 16:34:36 +02:00 
Approved-by: Francisco Casas (@fcasas)
Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1648
5 changed files with 197 additions and 2 deletions
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15
tests/hlsl/arithmetic-uint.shader_test
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@@ -89,6 +89,21 @@ uniform 0 uint 7
draw quad
probe (0, 0) rgba(38.0, 5.0, 7.0, 0.0)
[pixel shader]
uniform uint x;
float4 main() : SV_TARGET
{
uint4 res = 0;
res.x = ~(~x);
return res;
}
[test]
uniform 0 uint 7
draw quad
probe (0, 0) f32(7.0, 0.0, 0.0, 0.0)
[rtv 0]
format r32g32b32a32-uint
size (2d, 640, 480)