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
|
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2012 PPSSPP Project
// SPDX-License-Identifier: GPL-2.0-or-later
// Ported from bloomnoblur.fsh in PPSSPP.
texture BackBufferTex : COLOR;
sampler BackBuffer { Texture = BackBufferTex; };
uniform float Radius <
ui_type = "slider";
ui_label = "Radius";
ui_tooltip = "How far the glow spreads from bright areas.";
ui_min = 0.0; ui_max = 4.0; ui_step = 0.05;
> = 1.0;
uniform float Amount <
ui_type = "slider";
ui_label = "Amount";
ui_tooltip = "Strength of the glow added on top of the image.";
ui_min = 0.0; ui_max = 2.0; ui_step = 0.05;
> = 0.6;
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);
}
float Weight(float3 color)
{
float gray = (color.r + color.g + color.b) / 3.0;
float saturation = (abs(color.r - gray) + abs(color.g - gray) + abs(color.b - gray)) / 3.0;
return gray * gray / max(saturation, 0.25);
}
float4 PS_Bloom(float4 pos : SV_Position, float2 uv : TEXCOORD) : SV_Target
{
float3 color = tex2D(BackBuffer, uv).rgb;
float gray = (color.r + color.g + color.b) / 3.0;
float saturation = (abs(color.r - gray) + abs(color.g - gray) + abs(color.b - gray)) / 3.0;
float spread = 0.002 * gray / max(saturation, 0.25) * Radius;
float3 sum = float3(0.0, 0.0, 0.0);
[unroll] for (int x = -3; x <= 3; x += 2)
{
[unroll] for (int y = -3; y <= 3; y += 2)
{
float3 tap = tex2D(BackBuffer, uv + float2(x, y) * spread).rgb;
sum += tap * Weight(tap);
}
}
sum /= 16.0;
return float4(saturate(color + sum * Amount), 1.0);
}
technique Bloom <
ui_label = "Bloom";
ui_tooltip = "Bleeds light out of the brightest areas into a soft halo, the way a camera does when pointed at something too bright.";
>
{
pass
{
VertexShader = VS_PostProcess;
PixelShader = PS_Bloom;
}
}
|
