mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-26 07:35:41 +00:00
77 lines
1.5 KiB
HLSL
77 lines
1.5 KiB
HLSL
/*
|
|
Scanlines Sine Absolute Value
|
|
An ultra light scanline shader
|
|
by RiskyJumps
|
|
license: public domain
|
|
*/
|
|
|
|
#include "ReShade.fxh"
|
|
|
|
uniform float texture_sizeY <
|
|
ui_type = "drag";
|
|
ui_min = 1.0;
|
|
ui_max = BUFFER_HEIGHT;
|
|
ui_label = "Scanlines Height [Scanlines-Absolute]";
|
|
> = 240.0;
|
|
|
|
uniform float amp <
|
|
ui_type = "drag";
|
|
ui_min = 0.0;
|
|
ui_max = 2.0;
|
|
ui_step = 0.05;
|
|
ui_label = "Amplitude [Scanlines-Absolute]";
|
|
> = 1.25;
|
|
|
|
uniform float phase <
|
|
ui_type = "drag";
|
|
ui_min = 0.0;
|
|
ui_max = 2.0;
|
|
ui_step = 0.05;
|
|
ui_label = "Phase [Scanlines-Absolute]";
|
|
> = 0.0;
|
|
|
|
uniform float lines_black <
|
|
ui_type = "drag";
|
|
ui_min = 0.0;
|
|
ui_max = 1.0;
|
|
ui_step = 0.05;
|
|
ui_label = "Lines Blacks [Scanlines-Absolute]";
|
|
> = 0.0;
|
|
|
|
uniform float lines_white <
|
|
ui_type = "drag";
|
|
ui_min = 0.0;
|
|
ui_max = 2.0;
|
|
ui_step = 0.05;
|
|
ui_label = "Lines Whites [Scanlines-Absolute]";
|
|
> = 1.0;
|
|
|
|
#define freq 0.500000
|
|
#define offset 0.000000
|
|
#define pi 3.141592654
|
|
|
|
float4 PS_ScanlinesAbs(float4 pos : SV_POSITION, float2 tex : TEXCOORD0) : SV_TARGET
|
|
{
|
|
float3 color = tex2D(ReShade::BackBuffer, tex).xyz;
|
|
float grid;
|
|
|
|
float lines;
|
|
|
|
float omega = 2.0 * pi * freq; // Angular frequency
|
|
float angle = tex.y * omega * texture_sizeY + phase;
|
|
|
|
lines = sin(angle);
|
|
lines *= amp;
|
|
lines += offset;
|
|
lines = abs(lines) * (lines_white - lines_black) + lines_black;
|
|
color *= lines;
|
|
|
|
return color.xyzz;
|
|
}
|
|
|
|
technique ScanlinesAbs {
|
|
pass ScanlinesAbsolute{
|
|
VertexShader = PostProcessVS;
|
|
PixelShader = PS_ScanlinesAbs;
|
|
}
|
|
} |