[Git][wine/vkd3d][master] 3 commits: vkd3d-shader/hlsl: Divert written uniform derefs to temps before copy-propagation passes.

[Henri Verbeet (＠hverbeet)]

Henri Verbeet pushed to branch master at wine / vkd3d


Commits:
b1d89154 by Shaun Ren at 2025-04-02T18:49:52+02:00
vkd3d-shader/hlsl: Divert written uniform derefs to temps before copy-propagation passes.

The following pixel shader currently triggers an infinite loop during
copy propagation, which is fixed by this commit:

    sampler s;
    Texture2D t1, t2;

    float4 main() : sv_target
    {
        Texture2D t = t1;
        t1 = t2;
        t2 = t;
        return t1.Sample(s, float2(0, 0)) + t2.Sample(s, float2(0, 0));
    }

The infinite loop occurs because copy_propagation_transform_object_load()
replaces t1 in the resource_load(t1, ...) instruction
with t2, t1, t2, ... repeatedly.

- - - - -
7aebed0e by Shaun Ren at 2025-04-02T18:49:52+02:00
vkd3d-shader/hlsl: Ensure that uniform objects are never written to in copy_propagation_transform_object_load().

- - - - -
3e44bd4e by Shaun Ren at 2025-04-02T18:51:10+02:00
tests/hlsl: Add a test for copy-propagation of uniform texture object writes.

- - - - -


2 changed files:

- libs/vkd3d-shader/hlsl_codegen.c
- tests/hlsl/hard-copy-prop.shader_test


View it on GitLab: https://gitlab.winehq.org/wine/vkd3d/-/compare/3ead8d532b76e1dd03d080d0e99a8...

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View it on GitLab: https://gitlab.winehq.org/wine/vkd3d/-/compare/3ead8d532b76e1dd03d080d0e99a8...
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