Justin Marshall
46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
{
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parms {
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}
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state {
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depthfunc GL_ALWAYS
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alphamask
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depthmask
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twosided
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}
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hlsl_vp {
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result.position = vertex.position;
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}
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hlsl_fp {
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float2 texCoord = screenPosToTexcoord( fragment.position.xy, $renderPositionToViewTexture );
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// Fetch the depth.
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float depth = tex2Ddepth_fast( $lightDepthMap, texCoord );
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// Compute partial derivatives of depth.
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float dx = ddx( depth );
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float dy = ddy( depth );
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float moment1 = depth;
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float moment2 = depth * depth;
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float s = $renderPositionToViewTexture.z;
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float d0 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.0 * float2( -0.375, -0.125 ) );
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float d1 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.0 * float2( -0.125, 0.375 ) );
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float d2 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.0 * float2( 0.125, -0.375 ) );
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float d3 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.0 * float2( 0.375, 0.125 ) );
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float d4 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.5 * float2( -0.125, -0.375 ) );
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float d5 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.5 * float2( 0.375, -0.125 ) );
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float d6 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.5 * float2( -0.375, 0.125 ) );
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float d7 = tex2Ddepth_fast( $lightDepthMap, texCoord + s * 2.5 * float2( 0.125, 0.375 ) );
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moment1 = ( moment1 * 0.5 ) + ( d0 + d1 + d2 + d3 ) * 0.25 * 0.25 + ( d4 + d5 + d6 + d7 ) * 0.25 * 0.25;
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moment2 = ( moment2 * 0.5 ) + ( d0 * d0 + d1 * d1 + d2 * d2 + d3 * d3 ) * 0.25 * 0.25 + ( d4 * d4 + d5 * d5 + d6 * d6 + d7 * d7 ) * 0.25 * 0.25;
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result.color.x = moment1;
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result.color.y = moment2 + 100 * ( dx * dx + dy * dy );
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result.color.z = 0.0;
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result.color.a = 1.0;
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}
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} |