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-rw-r--r--hlsl/phosphor.fx14
1 files changed, 8 insertions, 6 deletions
diff --git a/hlsl/phosphor.fx b/hlsl/phosphor.fx
index 44b00ac0ee7..13c7700e2e8 100644
--- a/hlsl/phosphor.fx
+++ b/hlsl/phosphor.fx
@@ -68,18 +68,20 @@ uniform bool Passthrough;
VS_OUTPUT vs_main(VS_INPUT Input)
{
VS_OUTPUT Output = (VS_OUTPUT)0;
-
+
Output.Position = float4(Input.Position.xyz, 1.0f);
Output.Position.xy /= ScreenDims;
Output.Position.y = 1.0f - Output.Position.y; // flip y
Output.Position.xy -= 0.5f; // center
Output.Position.xy *= 2.0f; // zoom
-
- Output.TexCoord = Input.TexCoord + 0.5f / TargetDims;
+
+ Output.TexCoord = Input.TexCoord;
+ Output.TexCoord += 0.5f / TargetDims; // half texel offset correction (DX9)
+
Output.PrevCoord = Output.TexCoord;
Output.Color = Input.Color;
-
+
return Output;
}
@@ -93,13 +95,13 @@ float4 ps_main(PS_INPUT Input) : COLOR
{
float4 CurrPix = tex2D(DiffuseSampler, Input.TexCoord);
float3 PrevPix = tex2D(PreviousSampler, Input.PrevCoord).rgb * float3(Phosphor.r, Phosphor.g, Phosphor.b);
-
+
float RedMax = max(CurrPix.r, PrevPix.r);
float GreenMax = max(CurrPix.g, PrevPix.g);
float BlueMax = max(CurrPix.b, PrevPix.b);
return Passthrough
- ? CurrPix
+ ? CurrPix
: float4(RedMax, GreenMax, BlueMax, CurrPix.a);
}