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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>
61 lines
1.9 KiB
HLSL
61 lines
1.9 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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// Ported from naturalA.fsh in PPSSPP, by ShadX, modified by SimoneT.
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texture BackBufferTex : COLOR;
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sampler BackBuffer { Texture = BackBufferTex; };
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uniform float Luma <
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ui_type = "slider";
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ui_label = "Luma Curve";
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ui_tooltip = "Gamma applied to the luminance channel in YIQ space.";
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ui_min = 0.5; ui_max = 2.0; ui_step = 0.01;
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> = 1.2;
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uniform float Chroma <
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ui_type = "slider";
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ui_label = "Chroma Gain";
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ui_tooltip = "Boost applied to the two colour difference channels.";
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ui_min = 0.0; ui_max = 2.0; ui_step = 0.01;
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> = 1.2;
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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_Natural(float4 pos : SV_Position, float2 uv : TEXCOORD) : SV_Target
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{
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const float3x3 RGBtoYIQ = float3x3(0.299, 0.587, 0.114,
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0.596, -0.275, -0.321,
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0.212, -0.523, 0.311);
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const float3x3 YIQtoRGB = float3x3(1.0, 0.95568806, 0.61985809,
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1.0, -0.27158180, -0.64687382,
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1.0, -1.10817733, 1.70506456);
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float3 rgb = tex2D(BackBuffer, uv).rgb;
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float3 yiq = mul(RGBtoYIQ, rgb);
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yiq.x = pow(max(yiq.x, 0.0), Luma);
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yiq.yz *= Chroma;
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return float4(saturate(mul(YIQtoRGB, yiq)), 1.0);
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}
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technique NaturalColors <
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ui_label = "Natural Colours";
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ui_tooltip = "Warms the picture and lifts saturation for a less washed out look. Ported from the PPSSPP shader.";
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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_Natural;
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}
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}
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