Add shaders

Sources/Shaders/EnviroFlatCloudMap.shader

@@ -0,0 +1,114 @@
+Shader "Enviro/Standard/FlatCloudMap" {
+	Properties{
+
+	}
+		SubShader{
+		Tags { "RenderType" = "Opaque" }
+		LOD 200
+		Pass {
+		CGPROGRAM
+		#pragma vertex vert
+		#pragma fragment frag
+		#include "UnityCG.cginc"
+		#pragma target 3.0
+		#pragma exclude_renderers gles 
+
+		uniform sampler2D _NoiseTex;
+		uniform float _Softness = 0.2;
+		uniform float _Coverage = 0.6;
+		uniform float _Brightness = 1.0;
+		uniform float _CloudScale = 2.5;
+		uniform float2 _CloudAnimation;
+		uniform int noiseOctaves = 8;
+		uniform float _MorphingSpeed;
+
+
+		struct v2f
+		{
+			float4 Position : SV_POSITION;
+			float2 uv : TEXCOORD0;
+			float4 pos : TEXCOORD1;
+		};
+
+		v2f vert(appdata_img v)
+		{
+			v2f o;
+			UNITY_INITIALIZE_OUTPUT(v2f, o);
+			o.Position = UnityObjectToClipPos(v.vertex);
+			o.uv = v.texcoord;
+			o.pos = UnityObjectToClipPos(v.vertex);
+			return o;
+		} 
+
+		float noise(float2 uv)
+		{
+			return tex2D(_NoiseTex, uv).r;
+		}
+
+		float2 rotate(float2 uv)
+		{
+			float curlStrain = 3.0;
+			uv = uv + noise(uv*0.2)*0.005;
+			float rot = curlStrain;
+			float sinRot = sin(rot);
+			float cosRot = cos(rot);
+			float2x2 rotMat = float2x2(cosRot, -sinRot, sinRot, cosRot);
+			return mul(rotMat,uv);
+		}
+
+		float fbm(float2 uv)
+		{
+			float rot = 1.57;
+			float sinRot = sin(rot);
+			float cosRot = cos(rot);
+			float f = 0.0;
+			float total = 0.0;
+			float mul = 0.5;
+			float2x2 rotMat = float2x2(cosRot, -sinRot, sinRot, cosRot);
+			float timeScale = 10.0;
+		
+			for (int i = 0; i < noiseOctaves; i++)
+			{
+				f += noise(uv + _Time.y * (_MorphingSpeed * 0.0001) * timeScale * (1.0 - mul)) * mul;
+				total += mul;
+				uv *= 3.0;
+				uv = rotate(uv);
+				mul *= 0.5;
+			}
+			return f / total;
+		}
+
+		float4 frag(v2f i) : SV_Target
+		{
+
+		 float timeScale = 2.0;
+		 float2 uv = i.pos.xy / (20.0 * _CloudScale);
+
+		 float bright = _Brightness;
+
+		 float color1 = fbm(uv - 0.5 + -_CloudAnimation * 0.1);
+		 float color2 = fbm(uv - 10.5 + -_CloudAnimation * 0.2);
+
+		 float clouds1 = smoothstep(1.0 - _Coverage, min((1.0 - _Coverage) + _Softness * 2.0, 1.0), color1);
+		 float clouds2 = smoothstep(1.0 - _Coverage, min((1.0 - _Coverage) + _Softness, 1.0), color2);
+
+		 float cloudsFormComb = saturate(clouds1 + clouds2);
+
+		 float4 skyCol = float4(1,1,1,0.0);
+		 float cloudCol = saturate(saturate(1.0 - pow(color1, 1.0) * 0.2) * bright);
+		 float cloudCol2 = saturate(saturate(1.0 - pow(color2, 1.0) * 0.5) * bright);
+		 
+		 float4 clouds1Color = float4(cloudCol, cloudCol, cloudCol, cloudsFormComb);
+		 float4 clouds2Color = lerp(clouds1Color, float4(cloudCol2, cloudCol2, cloudCol2, cloudCol2), clouds2);
+		 float4 cloudColComb = lerp(clouds1Color, clouds2Color, saturate(clouds2 - clouds1));
+
+		 float4 final = lerp(skyCol, cloudColComb, cloudsFormComb);
+
+		 return float4(final.rgb, cloudsFormComb);
+		}
+
+	ENDCG
+	}
+	}
+	FallBack "Diffuse"
+}