Justin Marshall
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
{
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parms {
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stageSort sortTrans
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}
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state {
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depthmask
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depthfunc GL_ALWAYS
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twosided
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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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result.texcoord0 = float4( vertex.texcoord0.x, vertex.texcoord0.y, 0, 0 );
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result.color = swizzleColor( vertex.color );
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result.texcoord1 = swizzleColor( vertex.tangent ) * _float4( 2.0 ) - _float4( 1.0 );
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}
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hlsl_fp {
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half4 CoYCgA = tex2D( $transMap, fragment.texcoord0.xy );
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// convert to RGBA
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// The 0 value for Co and Cg will be at DXT value 16 in the 0 - 31
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// range of 5 bits, which will be expanded to 10000100b in 32 bit
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// color, or 132/255.0 in floating point.
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CoYCgA.xz -= 132.0 / 255.0;
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half4 rgba;
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rgba.x = CoYCgA.w + CoYCgA.x - CoYCgA.z;
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rgba.y = CoYCgA.w + CoYCgA.z;
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rgba.z = CoYCgA.w - CoYCgA.x - CoYCgA.z;
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rgba.w = CoYCgA.y;
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// black level adjustment
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float scale = 1.0 - $cbBlackLevel.x;
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float bias = $cbBlackLevel.x;
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// now that we are back in RGB space, apply the vertex color
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rgba *= fragment.color;
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rgba += fragment.texcoord1;
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// use fragment.color.w instead if rgba.w so we don't apply the premultipled alpha twice.
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result.color.xyz = saturate( rgba.xyz * scale + bias ) * fragment.color.w;
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result.color.w = rgba.w;
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}
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} |