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https://git.eden-emu.dev/eden-emu/eden.git
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CamilleLaVey
ed566919f4
Very self-explanatory; implementation of the feature for post-processing shaders for Android (at least for now); will allow users to enhance the graphic quality of video games based on the use of multiple shaders adjustable, presets and more, inspired on the PPSSPP implementation, this feature adds 22 customizable shaders (1 pass) that lives on the overlay of the screen, which means that aside of the capability to chain multiple shaders on the screen, this doesn't have depths (pixel/ depth z-buffer) so it ensures the performance with it's use. Few shaders were a faithful port from PPSSPP with their respective attribution on the shader headers for their respective owners; and there are adaptations from public references/ cinematographic (Anime4K) and the rest are my own addition. _Special Credits:_ 1.- PPSSPP Team for their contribution on the public references for shaders: Henrik Rydgard, ShadX, SimoneT, KillaMaaki and guest(r). 2.- Niklas Haas. 3.- bloc97. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4348 Reviewed-by: lizzie <lizzie@eden-emu.dev> Reviewed-by: Maufeat <sahyno1996@gmail.com>
65 lines
1.8 KiB
HLSL
65 lines
1.8 KiB
HLSL
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: Copyright 2012 PPSSPP Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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// Based on colorcorrection.fsh in PPSSPP.
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texture BackBufferTex : COLOR;
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sampler BackBuffer { Texture = BackBufferTex; };
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uniform float Saturation <
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ui_type = "slider";
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ui_label = "Saturation";
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ui_min = 0.0; ui_max = 2.0; ui_step = 0.01;
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> = 1.0;
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uniform float Brightness <
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ui_type = "slider";
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ui_label = "Brightness";
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ui_min = 0.0; ui_max = 2.0; ui_step = 0.01;
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> = 1.0;
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uniform float Contrast <
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ui_type = "slider";
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ui_label = "Contrast";
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ui_min = 0.0; ui_max = 2.0; ui_step = 0.01;
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> = 1.0;
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uniform float Gamma <
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ui_type = "slider";
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ui_label = "Gamma";
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ui_min = 0.5; ui_max = 2.0; ui_step = 0.01;
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> = 1.0;
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void VS_PostProcess(in uint id : SV_VertexID, out float4 pos : SV_Position, out float2 uv : TEXCOORD)
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{
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uv = float2(float(id & 2), float((id & 1) << 1));
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pos = float4(uv * float2(2.0, -2.0) + float2(-1.0, 1.0), 0.0, 1.0);
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}
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float4 PS_ColorGrade(float4 pos : SV_Position, float2 uv : TEXCOORD) : SV_Target
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{
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float3 rgb = tex2D(BackBuffer, uv).rgb;
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float luma = dot(rgb, float3(0.2126, 0.7152, 0.0722));
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rgb = lerp(float3(luma, luma, luma), rgb, Saturation);
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rgb *= Brightness;
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rgb = (rgb - 0.5) * Contrast + 0.5;
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rgb = pow(max(rgb, 0.0), 1.0 / max(Gamma, 0.0001));
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return float4(saturate(rgb), 1.0);
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}
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technique ColorGrade <
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ui_label = "Colour Grade";
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ui_tooltip = "The four basic colour controls in one pass: saturation, brightness, contrast and gamma. Reach for this before anything more specialised.";
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>
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{
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pass
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{
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VertexShader = VS_PostProcess;
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PixelShader = PS_ColorGrade;
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}
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}
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