CrispyPin/cvr-props
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update colour diffuser shader

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Crispy 2024-09-12 21:03:13 +02:00
parent 64d0a00c5c
commit e3e6752304
3 changed files with 119 additions and 116 deletions
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171
Assets/automata/Diffuse/diffuse.shader
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@ -1,85 +1,88 @@
Shader "CrispyPin/diffuse"
{
Properties
{
[NoScaleOffset]
_LastFrame ("Render texture", 2D) = "white" {}
[NoScaleOffset]
_Noise ("Noise", 2D) = "white" {}
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 100
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
#define WIDTH 256
struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f
{
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};
texture2D _LastFrame;
sampler2D _Noise;
v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}
float3 source_pixel(uint2 p, float2 uv, float2 rand_offset) {
const uint dir = tex2D(_Noise, uv + _Time.xy + rand_offset).r * 4.0;
if (dir == 0) {
p.x += 1;
} else if (dir == 1) {
p.x -= 1;
} else if (dir == 2) {
p.y += 1;
} else if (dir == 3) {
p.y -= 1;
}
return _LastFrame[p];
}
float4 frag (v2f i) : SV_Target {
if(_ProjectionParams.z > 1) discard;
const uint2 p = i.uv * WIDTH;
float red = _LastFrame[p].r - (1./255.);
float green = _LastFrame[p].g - (1./255.);
float blue = _LastFrame[p].b - (1./255.);
if (red <= 0) {
red = source_pixel(p, i.uv, float2(0.34, 0.89)).r;
}
if (green <= 0) {
green = source_pixel(p, i.uv, float2(0.43, 0.19)).g;
}
if (blue <= 0) {
blue = source_pixel(p, i.uv, float2(0.03, 0.39)).b;
}
return float4(red, green, blue, 1);
}
ENDCG
}
}
Shader "CrispyPin/diffuse" {
Properties {
[NoScaleOffset]
_LastFrame ("Render texture", 2D) = "white" {}
[NoScaleOffset]
_Noise ("Noise", 2D) = "white" {}
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 100
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
#define WIDTH 256
struct appdata {
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f {
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};
texture2D _LastFrame;
sampler2D _Noise;
v2f vert (appdata v) {
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}
float3 modify(float2 uv, float3 source) {
float3 rand = tex2D(_Noise, uv + _Time.yz + source);
float3 q = 0.01 * rand;
return source - q;
}
float3 source_pixel(uint2 p, float2 uv, float2 rand_offset) {
const uint dir = tex2D(_Noise, uv + _Time.xy + rand_offset).r * (10.0 + sin(_Time.y*10) * 6.);
if (dir == 0) {
p.x += 1;
} else if (dir == 1) {
p.y += 1;
} else if (dir == 2) {
p.x -= 1;
} else if (dir == 3) {
p.y -= 1;
} else {
return modify(uv, _LastFrame[p]);
// return _LastFrame[p];
}
return _LastFrame[p];
}
float4 frag (v2f i) : SV_Target {
if(_ProjectionParams.z > 1) discard;
const uint2 p = i.uv * WIDTH;
float3 s = modify(i.uv, _LastFrame[p]);
float red = s.r;
float green = s.g;
float blue = s.b;
const float epsilon = 0.1;
if (red <= epsilon) {
red = source_pixel(p, i.uv, float2(0.34, 0.89)).r;
}
if (green <= epsilon) {
green = source_pixel(p, i.uv, float2(0.43, 0.19)).g;
}
if (blue <= epsilon) {
blue = source_pixel(p, i.uv, float2(0.03, 0.39)).b;
}
return float4(red, green, blue, 1);
}
ENDCG
}
}
}