Justin Marshall
49 lines
1.5 KiB
Plaintext
49 lines
1.5 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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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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// writes result.hcolor as the result of a smeared bloom
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// glareStep will be { 1, 0 } or { 0, 1 } for horizontal / vertical separation
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// gaussian 3 std dev
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half bloom0 = 0.134598;
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half bloom1 = 0.127325;
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half bloom2 = 0.107778;
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half bloom3 = 0.081638;
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half bloom4 = 0.055335;
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half bloom5 = 0.033562;
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half bloom6 = 0.018216;
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half bloom7 = 0.008847;
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// convert from 0,1,2,3,... coordinates to 0.0 - 1.0
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float2 tc = screenPosToTexcoord( fragment.position.xy, $positionToViewTexture );
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float2 step = $glareStep.xy * $positionToViewTexture.zw;
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float2 dir = step;
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half4 total;
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total = h4tex2D( $glareMap, tc ) * bloom0;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom1;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom2;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom3;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom4;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom5;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom6;
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dir += step;
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total += ( h4tex2D( $glareMap, tc + dir ) + h4tex2D( $glareMap, tc - dir ) ) * bloom7;
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result.hcolor = total * 2.0; // hack for range?
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}
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} |