Justin Marshall
52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
{
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parms {
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stageSort sortPerturber
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}
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state {
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depthMask
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depthfunc GL_LEQUAL
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blend GL_ONE_MINUS_DST_ALPHA GL_DST_ALPHA
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}
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hlsl_vp {
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result.position.x = dot4( vertex.position, $mvpMatrixX );
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result.position.y = dot4( vertex.position, $mvpMatrixY );
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result.position.z = dot4( vertex.position, $mvpMatrixZ );
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result.position.w = dot4( vertex.position, $mvpMatrixW );
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float4 worldPosition;
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worldPosition.x = dot4( vertex.position, $modelMatrixX );
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worldPosition.y = dot4( vertex.position, $modelMatrixY );
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worldPosition.z = dot4( vertex.position, $modelMatrixZ );
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worldPosition.w = dot4( vertex.position, $modelMatrixW );
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float eyeDistance = abs( dot4( worldPosition, $viewMatrixZ ) );
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float nearFade = saturate( ( eyeDistance - $distortionFade.x ) / ( $distortionFade.y - $distortionFade.x ) );
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float farFade = saturate( ( eyeDistance - $distortionFade.z ) / ( $distortionFade.w - $distortionFade.z ) );
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float fade = nearFade * ( 1.0 - farFade );
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result.texcoord0.x = dot4( vertex.texcoord0, $sMatrix );
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result.texcoord0.y = dot4( vertex.texcoord0, $tMatrix );
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result.texcoord0.z = fade;
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result.texcoord0.w = -( clamp( result.position.w - $fogStart.x, 0.0, $fogEnd.x ) * $fogScale.x );
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float4 color = swizzleColor( vertex.color ) * $color;
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result.color = color;
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}
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hlsl_fp {
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// Sample normal map
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float4 texel = tex2D( $distortionMap, fragment.texcoord0.xy );
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float blur = texel.z * fragment.color.w * fragment.texcoord0.z;
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float mask = texel.w * fragment.color.w * fragment.texcoord0.z;
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// Convert from [0,1] to [-1,1]
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float2 distortion = ( texel.xy * _float2( 2.0 ) ) - _float2( 1.0 );
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// Scale normals by globals multiplied with color
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distortion *= $distortionScale.xy * fragment.color.xy * _float2( mask );
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// Compute and store distortion normals
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result.color = ComputeDistortion( distortion, blur );
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}
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} |