*misc

1 files changed, 16 insertions, 1 deletions

diff --git a/Assets/Bundle/Shaders/Common/Image/ImageEffect.cginc b/Assets/Bundle/Shaders/Common/Image/ImageEffect.cginc
index 04334ee4..7f657e59 100644
--- a/Assets/Bundle/Shaders/Common/Image/ImageEffect.cginc
+++ b/Assets/Bundle/Shaders/Common/Image/ImageEffect.cginc
@@ -1,4 +1,4 @@
-// UnitLensEffect效果
+// UnitLensEffect效果相关
 
 sampler2D _MainTex;
 float4 _MainTex_ST;
@@ -16,3 +16,18 @@ sampler2D _UnitMotionVectorTexture;
 float4 _UnitMotionVectorTexture_ST;
 
 float4 _UnitTileOffset;
+
+// functions
+
+// 只对一小部分进行后处理
+float4 CalculateUnitTillOfssetVertex(float4 vert) 
+{
+	float4 v = float4(vert.xy * _UnitTileOffset.xy + _UnitTileOffset.zw, 0, 1);
+	v.xy = v.xy * 2 - float2(1,1);
+	return v;
+}
+
+fixed2 CalculateUnitTillOfssetUV(fixed2 uv0) 
+{
+	return uv0 * _UnitTileOffset.xy + _UnitTileOffset.zw;
+}