mirror of
https://git.eden-emu.dev/eden-emu/eden.git
synced 2026-09-05 20:04:13 +00:00
CamilleLaVey
85 lines
2.7 KiB
HLSL
85 lines
2.7 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-FileCopyrightText: guest(r)
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// SPDX-License-Identifier: GPL-2.0-or-later
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// Ported from cartoon.fsh in PPSSPP, Advanced Cartoon shader I by guest(r).
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texture BackBufferTex : COLOR;
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sampler BackBuffer { Texture = BackBufferTex; };
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uniform float EdgeStrength <
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ui_type = "slider";
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ui_label = "Edge Strength";
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ui_tooltip = "Darkness of the ink outline drawn around detected edges.";
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ui_min = 0.0; ui_max = 2.0; ui_step = 0.05;
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> = 0.5;
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uniform float Levels <
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ui_type = "slider";
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ui_label = "Colour Levels";
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ui_tooltip = "How many bands the colours are quantised into.";
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ui_min = 2.0; ui_max = 16.0; ui_step = 1.0;
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> = 4.0;
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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(0.0, 0.0);
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if (id == 2)
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{
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uv.x = 2.0;
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}
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if (id == 1)
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{
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uv.y = 2.0;
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}
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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_Cartoon(float4 pos : SV_Position, float2 uv : TEXCOORD) : SV_Target
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{
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float2 texel = float2(BUFFER_RCP_WIDTH, BUFFER_RCP_HEIGHT);
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float3 c00 = tex2D(BackBuffer, uv + texel * float2(-1.0, -1.0)).rgb;
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float3 c10 = tex2D(BackBuffer, uv + texel * float2( 0.0, -1.0)).rgb;
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float3 c20 = tex2D(BackBuffer, uv + texel * float2( 1.0, -1.0)).rgb;
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float3 c01 = tex2D(BackBuffer, uv + texel * float2(-1.0, 0.0)).rgb;
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float3 c11 = tex2D(BackBuffer, uv).rgb;
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float3 c21 = tex2D(BackBuffer, uv + texel * float2( 1.0, 0.0)).rgb;
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float3 c02 = tex2D(BackBuffer, uv + texel * float2(-1.0, 1.0)).rgb;
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float3 c12 = tex2D(BackBuffer, uv + texel * float2( 0.0, 1.0)).rgb;
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float3 c22 = tex2D(BackBuffer, uv + texel * float2( 1.0, 1.0)).rgb;
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const float3 dt = float3(1.0, 1.0, 1.0);
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float d1 = dot(abs(c00 - c22), dt);
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float d2 = dot(abs(c20 - c02), dt);
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float hl = dot(abs(c01 - c21), dt);
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float vl = dot(abs(c10 - c12), dt);
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float edge = EdgeStrength * (d1 + d2 + hl + vl) / (dot(c11, dt) + 0.15);
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float lc = Levels * length(c11);
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float f = frac(lc);
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f *= f;
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lc = (floor(lc) + f * f) / Levels + 0.05;
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float3 unit = normalize(max(c11, 0.0001));
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float3 quant = Levels * unit;
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float3 frct = frac(quant);
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frct *= frct;
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quant = floor(quant) + 0.05 * dt + frct * frct;
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float3 color = lc * (1.1 - edge * sqrt(edge)) * quant / Levels;
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return float4(saturate(color), 1.0);
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}
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technique Cartoon
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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_Cartoon;
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}
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}
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