1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
texture BackBufferTex : COLOR;
sampler BackBuffer { Texture = BackBufferTex; };
uniform float ShadowHue <
ui_type = "slider";
ui_label = "Shadow Hue";
ui_min = 0.0; ui_max = 360.0; ui_step = 1.0;
> = 210.0;
uniform float ShadowStrength <
ui_type = "slider";
ui_label = "Shadow Strength";
ui_min = 0.0; ui_max = 1.0; ui_step = 0.01;
> = 0.0;
uniform float HighlightHue <
ui_type = "slider";
ui_label = "Highlight Hue";
ui_min = 0.0; ui_max = 360.0; ui_step = 1.0;
> = 45.0;
uniform float HighlightStrength <
ui_type = "slider";
ui_label = "Highlight Strength";
ui_min = 0.0; ui_max = 1.0; ui_step = 0.01;
> = 0.0;
uniform float Balance <
ui_type = "slider";
ui_label = "Balance";
ui_tooltip = "Moves the split between what counts as shadow and what counts as highlight.";
ui_min = -0.5; ui_max = 0.5; ui_step = 0.01;
> = 0.0;
void VS_PostProcess(in uint id : SV_VertexID, out float4 pos : SV_Position, out float2 uv : TEXCOORD)
{
uv = float2(float(id & 2), float((id & 1) << 1));
pos = float4(uv * float2(2.0, -2.0) + float2(-1.0, 1.0), 0.0, 1.0);
}
float3 HueToRGB(float hue)
{
float h = frac(hue / 360.0) * 6.0;
return saturate(float3(abs(h - 3.0) - 1.0, 2.0 - abs(h - 2.0), 2.0 - abs(h - 4.0)));
}
float4 PS_SplitToning(float4 pos : SV_Position, float2 uv : TEXCOORD) : SV_Target
{
float3 rgb = tex2D(BackBuffer, uv).rgb;
float luma = saturate(dot(rgb, float3(0.2126, 0.7152, 0.0722)) + Balance);
float3 shadow_tint = HueToRGB(ShadowHue) - 0.5;
float3 highlight_tint = HueToRGB(HighlightHue) - 0.5;
rgb += shadow_tint * ShadowStrength * 0.25 * (1.0 - luma);
rgb += highlight_tint * HighlightStrength * 0.25 * luma;
return float4(saturate(rgb), 1.0);
}
technique SplitToning <
ui_label = "Split Toning";
ui_tooltip = "Tints the shadows and the highlights towards two different hues.";
>
{
pass
{
VertexShader = VS_PostProcess;
PixelShader = PS_SplitToning;
}
}
|
