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Made interactionSM shader sampler loop to use r_shadowMapSamples many iterations

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This commit is contained in:
Robert Beckebans 2014-05-14 18:57:53 +02:00
parent a66859f09c
commit 75d6e89876
1 changed files with 7 additions and 34 deletions
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41
base/renderprogs/interactionSM.pixel
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@ -202,46 +202,19 @@ void main( PS_IN fragment, out PS_OUT result )
// multiple taps // multiple taps
#if 0 #if 1
const float2 poissonDisk2[12] = float2[](
float2(-0.326,-0.406),
float2(-0.840,-0.074),
float2(-0.696, 0.457),
float2(-0.203, 0.621),
float2( 0.962,-0.195),
float2( 0.473,-0.480),
float2( 0.519, 0.767),
float2( 0.185,-0.893),
float2( 0.507, 0.064),
float2( 0.896, 0.412),
float2(-0.322,-0.933),
float2(-0.792,-0.598)
);
float shadow = 0.0;
float shadowTexelSize = ( 1.0 / 1024.0 ) * 0.5;
for( int i = 0; i < 12; i++ )
{
int index = int( rand( shadowTexcoord.xy * 1.0 ) * 12 );
float4 shadowTexcoordOffset = float4( shadowTexcoord.xy + poissonDisk2[index] * shadowTexelSize, shadowTexcoord.z, shadowTexcoord.w );
shadow += texture( samp5, shadowTexcoordOffset.xywz);
}
shadow *= ( 1.0 / 12.0 );
#elif 1
float4 base = shadowTexcoord; float4 base = shadowTexcoord;
base.xy += rpJitterTexScale.xy * -0.5; base.xy += rpJitterTexScale.xy * -0.5;
float shadow = 0.0; float shadow = 0.0;
float stepSize = 1.0 / 16.0; //float stepSize = 1.0 / 16.0;
float numSamples = rpScreenCorrectionFactor.w;
float stepSize = 1.0 / numSamples;
float4 jitterTC = ( fragment.position * rpScreenCorrectionFactor ) + rpJitterTexOffset; float4 jitterTC = ( fragment.position * rpScreenCorrectionFactor ) + rpJitterTexOffset;
for( int i = 0; i < 16; i++ ) for( float i = 0.0; i < numSamples; i += 1.0 )
{ {
float4 jitter = base + tex2D( samp6, jitterTC.xy ) * rpJitterTexScale; float4 jitter = base + tex2D( samp6, jitterTC.xy ) * rpJitterTexScale;
jitter.zw = shadowTexcoord.zw; jitter.zw = shadowTexcoord.zw;
@ -250,8 +223,8 @@ void main( PS_IN fragment, out PS_OUT result )
jitterTC.x += stepSize; jitterTC.x += stepSize;
} }
shadow *= ( 1.0 / 16.0 ); shadow *= stepSize;
#else #else
float shadow = texture( samp5, shadowTexcoord.xywz ); float shadow = texture( samp5, shadowTexcoord.xywz );
#endif #endif