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vkd3d-shader/hlsl: Flatten conditional blocks containing discard_nz instructions.

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For any `discard_nz c` instruction in a conditional block, we replace c with
    (cond && c)     in a then block,
and
    (!cond && c)    in an else block.
This commit is contained in:
Shaun Ren
2025-10-27 21:44:54 -04:00
committed by Henri Verbeet
parent 4d5a1528ab
commit 787d49d6d8
Notes: Henri Verbeet 2025-10-30 19:59:51 +01:00 
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/1732
2 changed files with 62 additions and 10 deletions
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12
tests/hlsl/discard.shader_test
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@@ -16,7 +16,7 @@ uniform 0 float4 9 8 7 6
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
[pixel shader todo]
[pixel shader todo(sm<4)]
uniform float4 x;
float4 main() : sv_target
@@ -29,10 +29,10 @@ float4 main() : sv_target
[test]
uniform 0 float4 1 2 3 4
todo(sm<6 | msl) draw quad
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
uniform 0 float4 9 8 7 6
todo(sm<6 | msl) draw quad
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
[pixel shader todo(sm<4)]
@@ -56,7 +56,7 @@ uniform 0 float4 9 8 7 6
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
[pixel shader todo]
[pixel shader todo(sm<4)]
uniform float4 x;
float4 main() : sv_target
@@ -72,10 +72,10 @@ float4 main() : sv_target
[test]
uniform 0 float4 1 2 3 4
todo(sm<6 | msl) draw quad
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
uniform 0 float4 9 8 7 6
todo(sm<6 | msl) draw quad
todo(sm<4 | glsl | msl & sm>=6) draw quad
probe (0, 0) f32(1, 2, 3, 4)
[require]