功能更新

Melskin/Shaders/LightedSurfaceEffect.hlsl

@@ -0,0 +1,28 @@
+sampler2D inputTex : register(S0);
+float2 mousePos : register(C0);
+float2 uiSize : register(C1);
+float lightSize : register(C2);
+float intensity : register(C3);
+float4 lightColor : register(C4);
+
+static const float PI = 3.14159265f;
+
+float4 main(float2 uv : TEXCOORD) : COLOR
+{
+	//UI的源颜色
+	float4 sourceColor = tex2D(inputTex, uv);
+	//计算当前UV值的实际尺寸坐标
+	float xPos = uv.x * uiSize.x;
+	float yPos = uv.y * uiSize.y;
+	//计算当前片元和鼠标位置的实际距离
+	float distanceMouseFrag = length(float2(xPos - mousePos.x, yPos - mousePos.y));
+	//归一化距离(0~1)
+	float uniformedDistance = min(distanceMouseFrag / lightSize,1);
+	//距离转渐进强度(1~0)
+	float intensityFrag = cos(uniformedDistance * PI) / 2.0f + 0.5f;
+	//计算线性减淡
+	float3 linearDodge = sourceColor.xyz + lightColor.xyz * intensityFrag * intensity * sourceColor.a;
+
+	return float4(linearDodge, sourceColor.a);
+	
+}