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vkd3d-shader/ir: Handle integer division by zero in vsir_program_lower_udiv().

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This achieves two things:
  - The GLSL backend no longer needs to handle this by itself. Likwise, the
    MSL backend won't have to either.
  - We no longer handle division by zero for DXIL UDiv and URem instructions,
    which leave this undefined.
This commit is contained in:
Henri Verbeet
2025-10-07 00:31:14 +02:00
parent 433adab6ad
commit 9de229925d
Notes: Henri Verbeet 2025-10-13 19:32:21 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1775
3 changed files with 70 additions and 49 deletions
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2
tests/hlsl/arithmetic-uint.shader_test
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@@ -69,7 +69,7 @@ void main(out uint4 dst : sv_target)
uniform 0 uint4 0 0 1 0
todo(msl) draw quad
% Integer division by zero is undefined for shader model 6 targets.
if(sm<6) todo(glsl & !llvmpipe) probe (0, 0) u32(0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff)
if(sm<6) probe (0, 0) u32(0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff)
uniform 0 uint4 1 1 7 1
todo(msl) draw quad
probe (0, 0) u32(1, 7, 0, 0)