*

2025-05-13 04:46:54 +03:00
parent e2b013a9f9
commit 0335ce61c5
48 changed files with 4915 additions and 0 deletions
@@ -0,0 +1,94 @@
+Shader "Unlit/Corner"
+{
+	Properties
+	{
+		_MainTex ("Texture", 2D) = "white" {}
+	}
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		LOD 100
+
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			// make fog work
+			#pragma multi_compile_fog
+			
+			#include "UnityCG.cginc"
+
+			struct appdata{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f{
+				float2 uv : TEXCOORD0;
+				float4 vertex : SV_POSITION;
+			};
+
+			sampler2D _MainTex;
+			float4 _MainTex_ST;
+			
+			v2f vert (appdata v){
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
+				return o;
+			}
+
+			static const float3x3 sobelX = float3x3(
+				float3(-1, 0, 1),
+				float3(-2, 0, 2),
+				float3(-1, 0, 1)
+				);
+
+			static const float3x3 sobelY = float3x3(
+				float3(-1, -2, -1),
+				float3(0, 0, 0),
+				float3(1, 2, 1)
+				);
+			
+			float sobelFilter(sampler2D image, float2 uv, float3x3 kernel) {
+				float2 textureSize = float2(512, 512);
+
+				float sum = 0.0f;
+				for (int y = -1; y <= 1; ++y) {
+					for (int x = -1; x <= 1; ++x) {
+						sum += tex2D(image, uv + float2((float)x / textureSize.x, (float)y / textureSize.y)).r * kernel[y + 1][x + 1];
+					}
+				}
+				return sum;
+			}
+
+			float4 frag (v2f i) : SV_Target{
+				float2 textureSize = float2(512,512);
+				float2 texelSize = 1.0f / textureSize;
+
+				float Ix = tex2D(_MainTex, i.uv + float2(texelSize.x, 0.0f)).r - tex2D(_MainTex, i.uv).r;
+				float Iy = tex2D(_MainTex, i.uv + float2(0.0f, texelSize.y)).r - tex2D(_MainTex, i.uv).r;
+
+				float2x2 jacobi;
+				jacobi[0][0] = Ix * Ix;
+				jacobi[0][1] = Ix * Iy;
+				jacobi[1][0] = Ix * Iy;
+				jacobi[1][1] = Iy * Iy;
+				
+				float jacobian = (Ix * Ix) * (Iy * Iy) - (Ix * Iy) * (Ix * Iy);
+
+				//return tex2D(_MainTex, i.uv).r;
+				float sX = sobelFilter(_MainTex, i.uv, sobelX);
+				float sY = sobelFilter(_MainTex, i.uv, sobelY);
+
+				//return sX;
+				return sY;
+				return sX*sX + sY*sY;
+				//return jacobian == 0;
+				//return abs(float4(Ix, Iy, 0, 1));
+			}
+			ENDCG
+		}
+	}
+}