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.
142 lines
2.7 KiB
Plaintext
142 lines
2.7 KiB
Plaintext
[pixel shader todo(sm<4)]
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uniform float4 x;
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float4 main() : sv_target
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{
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if (x.x == 9.0f)
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discard;
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return x;
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}
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[test]
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uniform 0 float4 1 2 3 4
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todo(sm<4 | glsl | msl & sm>=6) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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uniform 0 float4 9 8 7 6
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todo(sm<4 | glsl | msl & sm>=6) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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[pixel shader todo]
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uniform float4 x;
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float4 main() : sv_target
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{
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[flatten]
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if (x.x == 9.0f)
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discard;
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return x;
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}
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[test]
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uniform 0 float4 1 2 3 4
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todo(sm<6 | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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uniform 0 float4 9 8 7 6
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todo(sm<6 | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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[pixel shader todo(sm<4)]
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uniform float4 x;
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float4 main() : sv_target
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{
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float4 ret = x;
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if (x.x != 9.0f)
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ret.w = 4.0f;
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else
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discard;
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return ret;
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}
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[test]
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uniform 0 float4 1 2 3 4
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todo(sm<4 | glsl | msl & sm>=6) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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uniform 0 float4 9 8 7 6
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todo(sm<4 | glsl | msl & sm>=6) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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[pixel shader todo]
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uniform float4 x;
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float4 main() : sv_target
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{
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float4 ret = x;
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[flatten]
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if (x.x != 9.0f)
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ret.w = 4.0f;
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else
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discard;
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return ret;
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}
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[test]
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uniform 0 float4 1 2 3 4
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todo(sm<6 | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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uniform 0 float4 9 8 7 6
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todo(sm<6 | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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[require]
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shader model >= 3.0
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% Check that derivatives are still computed after discarding
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% other pixels in the same quad
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[pixel shader]
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float4 main(float4 pos : sv_position) : sv_target
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{
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if (frac((floor(pos.x) + floor(pos.y)) / 2) == 0.5)
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discard;
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return float4(ddx(pos.x), ddx(pos.y), ddy(pos.x), ddy(pos.y));
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}
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[test]
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todo(sm<4 | glsl | msl & sm>=6) draw quad
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probe (0, 0) f32(1, 0, 0, 1)
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probe (1, 0) f32(1, 2, 3, 4)
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probe (0, 1) f32(1, 2, 3, 4)
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probe (1, 1) f32(1, 0, 0, 1)
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probe (2, 0) f32(1, 0, 0, 1)
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probe (3, 0) f32(1, 2, 3, 4)
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probe (2, 1) f32(1, 2, 3, 4)
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probe (3, 1) f32(1, 0, 0, 1)
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[require]
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shader model >= 5.0
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format r32-float uav-load
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[uav 1]
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format r32-float
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size (2d, 2, 1)
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0.0 0.0
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% Check that side effects stop happening after discard
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[pixel shader]
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uniform float4 x;
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RWTexture2D<float> y : register(u1);
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float4 main(float4 pos : sv_position) : sv_target
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{
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if (pos.x == 0.5 && pos.y == 0.5)
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y[uint2(0, 0)] += 1;
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if (x.x == 9.0f)
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discard;
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if (pos.x == 0.5 && pos.y == 0.5)
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y[uint2(1, 0)] += 1;
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return x;
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}
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[test]
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uniform 0 float4 1 2 3 4
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todo(glsl | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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probe uav 1 (0, 0) f32(1.0)
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probe uav 1 (1, 0) f32(1.0)
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uniform 0 float4 9 8 7 6
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todo(glsl | msl) draw quad
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probe (0, 0) f32(1, 2, 3, 4)
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probe uav 1 (0, 0) f32(2.0)
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probe uav 1 (1, 0) f32(1.0)
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