43 lines
1.0 KiB
Plaintext
43 lines
1.0 KiB
Plaintext
|
// Copyright 2019-Present LexLiu. All Rights Reserved.
|
||
|
|
#include "LGUIPostProcessVertexShader.usf"
|
||
|
|
#include "/Engine/Public/Platform.ush"
|
||
|
|
|
||
|
|
static float _Offset[3] =
|
||
|
|
{
|
||
|
|
0.0,
|
||
|
|
1.3846153846,
|
||
|
|
3.2307692308
|
||
|
|
};
|
||
|
|
|
||
|
|
static float _Weight[3] =
|
||
|
|
{
|
||
|
|
0.2270270270,
|
||
|
|
0.3162162162,
|
||
|
|
0.0702702703
|
||
|
|
};
|
||
|
|
Texture2D _MainTex;
|
||
|
|
SamplerState _MainTexSampler;
|
||
|
|
float2 _BlurStrength;
|
||
|
|
#if USE_STRENGTH_TEXTURE
|
||
|
|
Texture2D _StrengthTex;
|
||
|
|
SamplerState _StrengthTexSampler;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
float4 GaussianBlurPS(SimpleVSToPS input) : SV_Target0
|
||
|
|
{
|
||
|
|
#if USE_STRENGTH_TEXTURE
|
||
|
|
float strength = _StrengthTex.Sample(_StrengthTexSampler, input.uv).r;
|
||
|
|
#endif
|
||
|
|
float4 color = _MainTex.Sample(_MainTexSampler, input.uv) * _Weight[0];
|
||
|
|
for (int i = 1; i < 3; i++)
|
||
|
|
{
|
||
|
|
float2 uvOffset = _Offset[i] * _BlurStrength;
|
||
|
|
#if USE_STRENGTH_TEXTURE
|
||
|
|
uvOffset *= strength;
|
||
|
|
#endif
|
||
|
|
color += _MainTex.Sample(_MainTexSampler, input.uv + uvOffset) * _Weight[i];
|
||
|
|
color += _MainTex.Sample(_MainTexSampler, input.uv - uvOffset) * _Weight[i];
|
||
|
|
}
|
||
|
|
return color;
|
||
|
|
}
|