mirror of
https://gitlab.winehq.org/wine/vkd3d.git
synced 2025-12-15 08:03:30 -08:00
4d5a1528ab
For an if block
if (cond)
{
<then_block>
}
else
{
<else_block>
}
We flatten it by first replacing any store instruction `v[[k]] = x`
in the then_block with the following:
1: load(v[[k]])
2: cond ? x : @1
3: v[[k]] = @2
Similarly, we replace any store instruction `v[[k]] = x` in the
else_block with the following:
1: load(v[[k]])
2: cond ? @1 : x
3: v[[k]] = @2
Then we can concatenate <then_block> and <else_block> together and
get rid of the if block.
100 lines
1.9 KiB
Plaintext
100 lines
1.9 KiB
Plaintext
[vertex shader]
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void main(float4 pos : position, out float tex : texcoord, out float4 out_pos : sv_position)
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{
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tex = pos.x;
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out_pos = pos;
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}
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[pixel shader]
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float4 main(float tex : texcoord) : sv_target
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{
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int i;
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float x = 0.0;
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[unroll] for (i = 0; i < 10; i++)
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{
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x += i;
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if (tex > 0.5 && i == 5)
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break;
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if (tex > -0.5 && i >= 7)
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continue;
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x -= 1;
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}
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return float4(i, x, 0.0, 0.0);
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}
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[test]
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draw quad
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probe ( 0, 0, 159, 480) f32(10.0, 35.0, 0.0, 0.0)
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probe (161, 0, 479, 480) f32(10.0, 38.0, 0.0, 0.0)
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probe (481, 0, 640, 480) f32( 5.0, 10.0, 0.0, 0.0)
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[require]
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shader model >= 4.0
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% Identical to the previous, except we prevent DXC from unrolling the
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% loop so we can test non-trivial control flow
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[pixel shader]
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uniform uint iter;
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float4 main(float tex : texcoord) : sv_target
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{
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int i;
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float x = 0.0;
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for (i = 0; i < iter; i++)
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{
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x += i;
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if (tex > 0.5 && i == 5)
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break;
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if (tex > -0.5 && i >= 7)
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continue;
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x -= 1;
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}
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return float4(i, x, 0.0, 0.0);
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}
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[test]
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uniform 0 uint4 10 0 0 0
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draw quad
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probe ( 0, 0, 159, 480) rgba (10.0, 35.0, 0.0, 0.0)
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probe (161, 0, 479, 480) rgba (10.0, 38.0, 0.0, 0.0)
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probe (481, 0, 640, 480) rgba ( 5.0, 10.0, 0.0, 0.0)
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[require]
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% Reset requirements
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[pixel shader]
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float4 main(float tex : texcoord) : sv_target
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{
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int i;
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float x = 0.0;
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[unroll] [attr1] for (i = 0; i < 10; i++)
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{
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x += i;
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}
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return float4(i, x, 0.0, 0.0);
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}
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[test]
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draw quad
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probe (0, 0) rgba (10.0, 45.0, 0.0, 0.0)
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[pixel shader fail(sm<6)]
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float4 main(float tex : texcoord) : sv_target
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{
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int i;
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float x = 0.0;
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[unroll] [unroll] for (i = 0; i < 10; i++)
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{
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x += i;
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}
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return float4(i, x, 0.0, 0.0);
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}
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[pixel shader fail]
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float4 main() : sv_target
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{
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break;
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return float4(0.0, 0.0, 0.0, 0.0);
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}
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