mirror of
https://github.com/RetroDECK/Duckstation.git
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120 lines
4 KiB
GLSL
120 lines
4 KiB
GLSL
/*===============================================================================*\
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|######################## [Dolphin FX Suite 2.20] #######################|
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|########################## By Asmodean ##########################|
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|| ||
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|| This program is free software; you can redistribute it and/or ||
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|| modify it under the terms of the GNU General Public License ||
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|| as published by the Free Software Foundation; either version 2 ||
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|| of the License, or (at your option) any later version. ||
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|| ||
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|| This program is distributed in the hope that it will be useful, ||
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|| but WITHOUT ANY WARRANTY; without even the implied warranty of ||
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|| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ||
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|| GNU General Public License for more details. (C)2015 ||
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|| ||
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|#################################################################################|
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\*===============================================================================*/
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// Sourced from https://raw.githubusercontent.com/Asmodean-/dolphin/89d640cd557189bb5f921fc219150c74c39bdc55/Data/Sys/Shaders/DolphinFX.glsl with modifications.
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/*
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[configuration]
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[OptionRangeInteger]
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GUIName = ScanlineType
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OptionName = A_SCANLINE_TYPE
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MinValue = 0
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MaxValue = 2
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StepAmount = 1
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DefaultValue = 0
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[OptionRangeFloat]
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GUIName = ScanlineIntensity
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OptionName = B_SCANLINE_INTENSITY
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MinValue = 0.15
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MaxValue = 0.30
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StepAmount = 0.01
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DefaultValue = 0.18
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[OptionRangeFloat]
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GUIName = ScanlineThickness
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OptionName = B_SCANLINE_THICKNESS
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MinValue = 0.20
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MaxValue = 0.80
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StepAmount = 0.01
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DefaultValue = 0.50
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[OptionRangeFloat]
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GUIName = ScanlineBrightness
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OptionName = B_SCANLINE_BRIGHTNESS
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MinValue = 0.50
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MaxValue = 2.00
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StepAmount = 0.01
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DefaultValue = 1.10
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[OptionRangeFloat]
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GUIName = ScanlineSpacing
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OptionName = B_SCANLINE_SPACING
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MinValue = 0.10
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MaxValue = 0.99
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StepAmount = 0.01
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DefaultValue = 0.25
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[/configuration]
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*/
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//Average relative luminance
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CONSTANT float3 lumCoeff = float3(0.2126729, 0.7151522, 0.0721750);
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float AvgLuminance(float3 color)
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{
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return sqrt(
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(color.x * color.x * lumCoeff.x) +
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(color.y * color.y * lumCoeff.y) +
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(color.z * color.z * lumCoeff.z));
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}
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void main()
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{
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float4 color = Sample();
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float4 intensity = float4(0.0, 0.0, 0.0, 0.0);
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if (GetOption(A_SCANLINE_TYPE) == 0) { //X coord scanlines
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if (fract(gl_FragCoord.y * GetOption(B_SCANLINE_SPACING)) > GetOption(B_SCANLINE_THICKNESS))
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{
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intensity = float4(0.0, 0.0, 0.0, 0.0);
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}
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else
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{
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intensity = smoothstep(0.2, GetOption(B_SCANLINE_BRIGHTNESS), color) +
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normalize(float4(color.xyz, AvgLuminance(color.xyz)));
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} }
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else if (GetOption(A_SCANLINE_TYPE) == 1) { //Y coord scanlines
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if (fract(gl_FragCoord.x * GetOption(B_SCANLINE_SPACING)) > GetOption(B_SCANLINE_THICKNESS))
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{
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intensity = float4(0.0, 0.0, 0.0, 0.0);
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}
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else
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{
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intensity = smoothstep(0.2, GetOption(B_SCANLINE_BRIGHTNESS), color) +
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normalize(float4(color.xyz, AvgLuminance(color.xyz)));
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} }
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else if (GetOption(A_SCANLINE_TYPE) == 2) { //XY coord scanlines
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if (fract(gl_FragCoord.x * GetOption(B_SCANLINE_SPACING)) > GetOption(B_SCANLINE_THICKNESS) &&
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fract(gl_FragCoord.y * GetOption(B_SCANLINE_SPACING)) > GetOption(B_SCANLINE_THICKNESS))
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{
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intensity = float4(0.0, 0.0, 0.0, 0.0);
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}
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else
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{
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intensity = smoothstep(0.2, GetOption(B_SCANLINE_BRIGHTNESS), color) +
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normalize(float4(color.xyz, AvgLuminance(color.xyz)));
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} }
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float level = (4.0-GetCoordinates().x) * GetOption(B_SCANLINE_INTENSITY);
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color = intensity * (0.5 - level) + color * 1.1;
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SetOutput(saturate(color));
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} |