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Further tweaks on the C64 shader

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This commit is contained in:
Robert Beckebans 2023-12-28 13:06:42 +01:00
parent a589f3e6f0
commit 49130533c6
1 changed files with 6 additions and 3 deletions
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9
neo/shaders/builtin/post/retro_c64.ps.hlsl
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@ -146,7 +146,6 @@ void main( PS_IN fragment, out PS_OUT result )
{
float2 uv = ( fragment.texcoord0 );
float2 uvPixellated = floor( fragment.position.xy / RESOLUTION_DIVISOR ) * RESOLUTION_DIVISOR;
//float2 uvPixellated = fragment.position.xy;
float4 color = t_BaseColor.Sample( samp0, uv );
@ -157,8 +156,9 @@ void main( PS_IN fragment, out PS_OUT result )
color.rgb = dc;
// add Bayer 8x8 dithering
float dither = DitherArray8x8( uvPixellated );
color.rgb += ( float3( dither, dither, dither ) * quantizationPeriod );
//float2 psxDitherScale = fragment.position.xy / ( RESOLUTION_DIVISOR / 2.0 );
float dither = DitherArray8x8( uvPixellated ) - 0.5;
color.rgb += float3( dither, dither, dither ) * quantizationPeriod;
// C64 colors http://unusedino.de/ec64/technical/misc/vic656x/colors/
@ -205,6 +205,9 @@ void main( PS_IN fragment, out PS_OUT result )
};
#endif
// PSX color quantization
//color = floor( color * 32.0 ) / 32.0;
// find closest color match from C64 color palette
color = LinearSearch( color.rgb, palette );
//color = float4( BinarySearch( color.rgb, palette ), 1.0 );