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author Westley M. Martinez <anikom15@gmail.com>2016-12-11 12:01:43 -0800
committer Westley M. Martinez <anikom15@gmail.com>2016-12-11 12:01:43 -0800
commiteba9550c42f6b12d563ead1412d6a67bfb78bd00 (patch)
treea3bd3f74c7277743ff16ff3426eb67a3914aa83f /hlsl
parent8daa648671105c91373bf2e34eff1bb2af8001d5 (diff)
Fix phosphor persistence shader behavior based on time.
hlsl/phosphor.fx: Add calculation time passed to be used by shader. src/osd/modules/render/d3d/d3dhlsl.cpp: Make pixel shader calculate the current pixel by factoring in the amount of time which has passed since the last rendering.
Diffstat (limited to 'hlsl')
-rw-r--r--hlsl/phosphor.fx12
1 files changed, 8 insertions, 4 deletions
diff --git a/hlsl/phosphor.fx b/hlsl/phosphor.fx
index 7d665b44749..40bc049bbc2 100644
--- a/hlsl/phosphor.fx
+++ b/hlsl/phosphor.fx
@@ -94,19 +94,23 @@ VS_OUTPUT vs_main(VS_INPUT Input)
//-----------------------------------------------------------------------------
uniform float3 Phosphor = float3(0.0f, 0.0f, 0.0f);
+uniform float dt = 0.0f;
+static const float f = 30.0f;
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);
+ float3 PrevPix = tex2D(PreviousSampler, Input.PrevCoord).rgb;
+ PrevPix.r *= Phosphor.r == 0 ? 0 : pow(Phosphor.r, f * dt);
+ PrevPix.g *= Phosphor.g == 0 ? 0 : pow(Phosphor.g, f * dt);
+ PrevPix.b *= Phosphor.b == 0 ? 0 : pow(Phosphor.b, f * dt);
float RedMax = max(CurrPix.r, PrevPix.r);
float GreenMax = max(CurrPix.g, PrevPix.g);
float BlueMax = max(CurrPix.b, PrevPix.b);
- return Passthrough
- ? CurrPix
- : float4(RedMax, GreenMax, BlueMax, CurrPix.a);
+ return Passthrough ?
+ CurrPix : float4(RedMax, GreenMax, BlueMax, CurrPix.a);
}
//-----------------------------------------------------------------------------