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65 lines
1.8 KiB

Shader "Hidden/Post FX/Monitors/Waveform Render"
{
SubShader
{
ZTest Always Cull Off ZWrite Off
Fog { Mode off }
CGINCLUDE
#pragma fragmentoption ARB_precision_hint_fastest
#pragma target 5.0
#include "UnityCG.cginc"
StructuredBuffer<uint4> _Waveform;
float2 _Size;
float4 _Channels;
float _Exposure;
float3 Tonemap(float3 x, float exposure)
{
const float a = 6.2;
const float b = 0.5;
const float c = 1.7;
const float d = 0.06;
x *= exposure;
x = max((0.0).xxx, x - (0.004).xxx);
x = (x * (a * x + b)) / (x * (a * x + c) + d);
return x * x;
}
float4 FragWaveform(v2f_img i) : SV_Target
{
const float3 red = float3(1.4, 0.03, 0.02);
const float3 green = float3(0.02, 1.1, 0.05);
const float3 blue = float3(0.0, 0.25, 1.5);
float3 color = float3(0.0, 0.0, 0.0);
uint2 uvI = i.pos.xy;
float4 w = _Waveform[uvI.y + uvI.x * _Size.y]; // Waveform data is stored in columns instead of rows
color += red * w.r * _Channels.r;
color += green * w.g * _Channels.g;
color += blue * w.b * _Channels.b;
color += w.aaa * _Channels.a * 1.5;
color = Tonemap(color, _Exposure);
color += (0.1).xxx;
return float4(saturate(color), 1.0);
}
ENDCG
// (0)
Pass
{
CGPROGRAM
#pragma vertex vert_img
#pragma fragment FragWaveform
ENDCG
}
}
FallBack off
}