143 lines
2.8 KiB
Text
143 lines
2.8 KiB
Text
Shader "CrispyPin/WireWorld"
|
|
{
|
|
Properties
|
|
{
|
|
_LastFrame ("Texture", 2D) = "white" {}
|
|
[Toggle]
|
|
_Running ("Running", Integer) = 0
|
|
}
|
|
SubShader
|
|
{
|
|
Tags { "RenderType"="Opaque" }
|
|
LOD 100
|
|
|
|
Pass
|
|
{
|
|
CGPROGRAM
|
|
#pragma vertex vert
|
|
#pragma fragment frag
|
|
|
|
#include "UnityCG.cginc"
|
|
|
|
struct appdata
|
|
{
|
|
float4 vertex : POSITION;
|
|
float2 uv : TEXCOORD0;
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
};
|
|
|
|
struct v2f
|
|
{
|
|
float2 uv : TEXCOORD0;
|
|
float4 vertex : SV_POSITION;
|
|
UNITY_VERTEX_OUTPUT_STEREO
|
|
};
|
|
|
|
sampler2D _LastFrame;
|
|
int _Running;
|
|
|
|
v2f vert (appdata v)
|
|
{
|
|
v2f o;
|
|
UNITY_SETUP_INSTANCE_ID(v);
|
|
UNITY_INITIALIZE_OUTPUT(v2f, o);
|
|
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
|
|
|
|
o.vertex = UnityObjectToClipPos(v.vertex);
|
|
o.uv = v.uv;
|
|
return o;
|
|
}
|
|
|
|
int close(float4 a, float4 b) {
|
|
return dot(normalize(a), normalize(b)) > 0.95;
|
|
}
|
|
|
|
#define EMPTY 0
|
|
#define WIRE 1
|
|
#define SIGNAL 2
|
|
#define TAIL 3
|
|
#define UNKNOWN 4
|
|
#define C_EMPTY float4(0, 0, 0, 1)
|
|
#define C_WIRE float4(1, 0.5, 0, 1)
|
|
#define C_SIGNAL float4(0.5, 0.5, 1, 1)
|
|
#define C_TAIL float4(0.5, 1, 0.5, 1)
|
|
|
|
int value(float2 center, float x, float y) {
|
|
fixed4 col = tex2D(_LastFrame, center + float2(x, y));
|
|
col = sqrt(col);
|
|
// col = col*col;
|
|
col.a = 1;
|
|
if (close(col, C_SIGNAL)) {
|
|
return SIGNAL;
|
|
}
|
|
if (close(col, C_TAIL)) {
|
|
return TAIL;
|
|
}
|
|
if (close(col, C_WIRE)) {
|
|
return WIRE;
|
|
}
|
|
return EMPTY;
|
|
}
|
|
|
|
|
|
fixed4 frag (v2f i) : SV_Target
|
|
{
|
|
const float resolution = 32.0;
|
|
const float d = 1.0/resolution;
|
|
|
|
float t = tex2D(_LastFrame, 0).r;
|
|
if (i.uv.x < d && i.uv.y < d) {
|
|
if (t > 0.9) {
|
|
return float4(0, 0, 0, 1);
|
|
}
|
|
t += unity_DeltaTime.x * 4;
|
|
return float4(t, t, t, 1);
|
|
}
|
|
|
|
int old_state = value(i.uv, 0, 0) ;
|
|
|
|
if (old_state == EMPTY) {
|
|
return C_EMPTY * C_EMPTY;
|
|
}
|
|
|
|
if (t > 0 || _Running == 0) {
|
|
if (old_state == SIGNAL) {
|
|
return C_SIGNAL * C_SIGNAL;
|
|
}
|
|
if (old_state == TAIL) {
|
|
return C_TAIL * C_TAIL;
|
|
}
|
|
return C_WIRE * C_WIRE;
|
|
}
|
|
|
|
if (old_state == SIGNAL) {
|
|
// return C_SIGNAL * C_SIGNAL;
|
|
return C_TAIL * C_TAIL;
|
|
}
|
|
if (old_state == TAIL) {
|
|
// return C_TAIL * C_TAIL;
|
|
return C_WIRE * C_WIRE;
|
|
}
|
|
|
|
int count =
|
|
(int)(value(i.uv, -d, -d) == SIGNAL) +
|
|
(int)(value(i.uv, 0, -d) == SIGNAL) +
|
|
(int)(value(i.uv, d, -d) == SIGNAL) +
|
|
|
|
(int)(value(i.uv, -d, 0) == SIGNAL) +
|
|
(int)(value(i.uv, d, 0) == SIGNAL) +
|
|
|
|
(int)(value(i.uv, -d, d) == SIGNAL) +
|
|
(int)(value(i.uv, 0, d) == SIGNAL) +
|
|
(int)(value(i.uv, d, d) == SIGNAL) ;
|
|
|
|
if (count == 1 || count == 2){
|
|
return C_SIGNAL * C_SIGNAL;
|
|
}
|
|
|
|
return C_WIRE * C_WIRE;
|
|
}
|
|
ENDCG
|
|
}
|
|
}
|
|
}
|