mirror of https://github.com/PCSX2/pcsx2.git
65 lines
1.8 KiB
HLSL
65 lines
1.8 KiB
HLSL
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2023 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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Texture2D Texture;
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SamplerState Sampler;
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cbuffer cb0
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{
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float4 params;
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};
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/*
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** Contrast, saturation, brightness
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** Code of this function is from TGM's shader pack
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** http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057
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*/
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// For all settings: 1.0 = 100% 0.5=50% 1.5 = 150%
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float4 ContrastSaturationBrightness(float4 color) // Ported to HLSL
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{
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float brt = params.x;
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float con = params.y;
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float sat = params.z;
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// Increase or decrease these values to adjust r, g and b color channels separately
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const float AvgLumR = 0.5;
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const float AvgLumG = 0.5;
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const float AvgLumB = 0.5;
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const float3 LumCoeff = float3(0.2125, 0.7154, 0.0721);
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float3 AvgLumin = float3(AvgLumR, AvgLumG, AvgLumB);
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float3 brtColor = color.rgb * brt;
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float3 intensity = dot(brtColor, LumCoeff);
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float3 satColor = lerp(intensity, brtColor, sat);
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float3 conColor = lerp(AvgLumin, satColor, con);
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color.rgb = conColor;
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return color;
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}
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struct PS_INPUT
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{
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float4 p : SV_Position;
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float2 t : TEXCOORD0;
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};
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float4 ps_main(PS_INPUT input) : SV_Target0
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{
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float4 c = Texture.Sample(Sampler, input.t);
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return ContrastSaturationBrightness(c);
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}
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