perf

Assets/Skybox Blender/Script/Resources/Material & Shader/SkyboxBlender.shader

@@ -0,0 +1,99 @@
+Shader "Skybox/SkyboxBlender" {
+
+    Properties {
+        _Tint ("Tint Color", Color) = (.5, .5, .5, 1)
+        _Tint2 ("Tint Color 2", Color) = (.5, .5, .5, 1)
+
+        [Gamma] _Exposure ("Exposure", Range(0, 8)) = 1.0
+        
+        _Rotation ("Rotation", Range(0, 360)) = 0
+        _BlendCubemaps ("Blend Cubemaps", Range(0, 1)) = 0
+        
+        [NoScaleOffset] _Tex ("Cubemap (HDR)", Cube) = "grey" {}
+        [NoScaleOffset] _Tex2 ("Cubemap (HDR) 2", Cube) = "grey" {}
+    }
+
+    SubShader {
+        Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
+        Cull Off ZWrite Off
+        Blend SrcAlpha OneMinusSrcAlpha
+    
+        Pass {
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+    
+            #include "UnityCG.cginc"
+    
+            samplerCUBE _Tex;
+            samplerCUBE _Tex2;
+            
+            float _BlendCubemaps;
+            half4 _Tex_HDR;
+            
+            half4 _Tint;
+            half4 _Tint2;
+            
+            half _Exposure;
+            float _Rotation;
+    
+            
+            float4 RotateAroundYInDegrees (float4 vertex, float degrees)
+            {
+                float alpha = degrees * UNITY_PI / 180.0;
+                float sina, cosa;
+
+                sincos(alpha, sina, cosa);
+                float2x2 m = float2x2(cosa, -sina, sina, cosa);
+                
+                return float4(mul(m, vertex.xz), vertex.yw).xzyw;
+            }
+        
+            struct appdata_t {
+                float4 vertex : POSITION;
+                float3 normal : NORMAL;
+
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+    
+            struct v2f {
+                float4 vertex : SV_POSITION;
+                float3 texcoord : TEXCOORD0;
+
+                UNITY_VERTEX_OUTPUT_STEREO
+            };
+    
+            v2f vert (appdata_t v)
+            {
+                v2f o;
+                
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_INITIALIZE_OUTPUT(v2f, o);
+                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+
+                o.vertex = UnityObjectToClipPos(RotateAroundYInDegrees(v.vertex, _Rotation));
+                o.texcoord = v.vertex;
+                
+                return o;
+            }
+    
+            fixed4 frag (v2f i) : SV_Target
+            {
+                float4 env1 = texCUBE (_Tex, i.texcoord);
+                float4 env2 = texCUBE (_Tex2, i.texcoord);
+                float4 env = lerp( env1, env2, _BlendCubemaps );
+
+                float4 tint = lerp( _Tint, _Tint2, _BlendCubemaps );
+                half3 c = DecodeHDR (env, _Tex_HDR);
+
+                c = c * tint.rgb * unity_ColorSpaceDouble;
+                c *= _Exposure;
+                
+                return half4(c, 1);
+            }
+
+            ENDCG
+        }
+    }
+    Fallback Off
+}