备份CatanBuilding瘦身独立工程

LocalPackages/SoftMaskForUGUI/Shaders/SoftMask.cginc

@@ -0,0 +1,68 @@
+#ifndef UI_SOFTMASK_INCLUDED
+#define UI_SOFTMASK_INCLUDED
+
+sampler2D _SoftMaskTex;
+float _Stencil;
+float4x4 _GameVP;
+float4x4 _GameTVP;
+half4 _MaskInteraction;
+uniform float _RenderScale;
+float CustomStep(float a, float x)
+{
+	return x >= a;
+}
+
+fixed Approximately(float4x4 a, float4x4 b)
+{
+	float4x4 d = a - b;
+	d = float4x4(
+			abs(d[0]),
+			abs(d[1]),
+			abs(d[2]),
+			abs(d[3])
+		);
+		
+	return step(
+		max(d._m00,max(d._m01,max(d._m02,max(d._m03,
+		max(d._m10,max(d._m11,max(d._m12,max(d._m13,
+		max(d._m20,max(d._m21,max(d._m22,max(d._m23,
+		max(d._m30,max(d._m31,max(d._m32,d._m33))))))))))))))),
+		0.5);
+}
+
+#if SOFTMASK_EDITOR
+float SoftMaskInternal(float4 clipPos, float4 wpos)
+#else
+float SoftMaskInternal(float4 clipPos)
+#endif
+{
+    half2 view = clipPos.xy / (_ScreenParams.xy * _RenderScale);
+	#if SOFTMASK_EDITOR
+		fixed isSceneView = 1 - Approximately(UNITY_MATRIX_VP, _GameVP);
+		float4 cpos = mul(_GameTVP, mul(UNITY_MATRIX_M, wpos));
+		view = lerp(view, cpos.xy / cpos.w * 0.5 + 0.5, isSceneView);
+		#if UNITY_UV_STARTS_AT_TOP
+			view.y = lerp(view.y, 1 - view.y, CustomStep(0, _ProjectionParams.x));
+		#endif
+	#elif UNITY_UV_STARTS_AT_TOP
+		view.y = lerp(view.y, 1 - view.y, CustomStep(0, _ProjectionParams.x));
+	#endif
+
+	fixed4 mask = tex2D(_SoftMaskTex, view);
+	half4 alpha = saturate(lerp(fixed4(1, 1, 1, 1), lerp(mask, 1 - mask, _MaskInteraction - 1), _MaskInteraction));
+	#if SOFTMASK_EDITOR
+	alpha *= CustomStep(0, view.x) * CustomStep(view.x, 1) * CustomStep(0, view.y) * CustomStep(view.y, 1);
+	#endif
+
+	return alpha.x * alpha.y * alpha.z * alpha.w;
+}
+
+#if SOFTMASK_EDITOR
+	#define SOFTMASK_EDITOR_ONLY(x) x
+	#define SoftMask(clipPos, worldPosition) SoftMaskInternal(clipPos, worldPosition)
+#else
+	#define SOFTMASK_EDITOR_ONLY(x)
+	#define SoftMask(clipPos, worldPosition) SoftMaskInternal(clipPos)
+#endif
+
+#endif // UI_SOFTMASK_INCLUDED