Justin Marshall
35 lines
783 B
Plaintext
35 lines
783 B
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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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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// convert from 0,1,2,3,... coordinates to 0.0 - 1.0
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float2 texcoord = screenPosToTexcoord( fragment.position.xy, $positionToViewTexture );
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half4 glareTex = h4tex2D( $glareMap, texcoord.xy );
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// scale for general glare brightness
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glareTex *= $glareScale.x;
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// color normalize and get magnitude
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glareTex.w = max( glareTex.x, glareTex.y );
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glareTex.w = max( glareTex.w, glareTex.z );
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// don't divide by zero
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glareTex.w = max( glareTex.w, 0.0001 );
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glareTex.xyz = glareTex.xyz / glareTex.w;
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// color clamp
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glareTex.w = min( glareTex.w, $glareMax.x );
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result.hcolor = glareTex * glareTex.w;
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result.hcolor.w = 1.0;
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}
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} |