vault backup: 2024-10-08 19:50:49
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@ -94,7 +94,7 @@ enum EColorWriteMask
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};
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```
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### 混合运算
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#### 混合运算
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混合运算符对于颜色混合方程和Alpha混合方程效果是一样的,这里就只用颜色混合方程来做讲解。
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| BlendOperation | 颜色混合方程 |
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@ -106,7 +106,7 @@ enum EColorWriteMask
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| BO_Max | $$C = Max(C_{src} , C_{dst} )C=Max(Csrc,Cdst)$$ |
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| BO_Min和BO_Max忽略了混合因子 | |
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### 混合因子
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#### 混合因子
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| BlendFactor | 颜色混合因子 | Alpha混合因子 |
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| ----------------------------- | ---------------------------------------------------------------- | ------------------------ |
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@ -134,10 +134,10 @@ TStaticDepthStencilState<
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bEnableDepthWrite, // 是否启用深度写入
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DepthTest, // 深度测试比较函数
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bEnableFrontFaceStencil, // (正面)启用模板
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FrontFaceStencilTest, // (正面)模板失败操作
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FrontFaceStencilTest, // (正面)模板测试操作
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FrontFaceStencilFailStencilOp, //(正面)模板测试失败时如何更新模板缓冲区
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FrontFaceDepthFailStencilOp, //(正面)深度测试失败时如何更新模板缓冲区
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FrontFacePassStencilOp, //(正面)通过模板测试时如何更新模板红冲去
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FrontFacePassStencilOp, //(正面)通过模板测试时如何更新模板缓冲区
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bEnableBackFaceStencil, // (背面)启用模板
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BackFaceStencilTest, // (背面)模板失败操作
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BackFaceStencilFailStencilOp, //(背面)模板测试失败时如何更新模板缓冲区
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@ -148,6 +148,13 @@ TStaticDepthStencilState<
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>
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```
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```c++
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//一般使用这个
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TStaticDepthStencilState<true, CF_DepthNearOrEqual>::GetRHI();
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//CustomStencil中使用的
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TStaticDepthStencilState<true, CF_DepthNearOrEqual, true, CF_Always, SO_Keep, SO_Keep, SO_Replace, false, CF_Always, SO_Keep, SO_Keep, SO_Keep, 255, 255>::GetRHI()
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```
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#### DepthTest
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深度测试比较函数。
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```c++
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@ -173,6 +180,23 @@ enum ECompareFunction
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};
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```
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```c++
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enum EStencilOp
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{
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SO_Keep,
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SO_Zero,
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SO_Replace,
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SO_SaturatedIncrement,
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SO_SaturatedDecrement,
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SO_Invert,
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SO_Increment,
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SO_Decrement,
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EStencilOp_Num,
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EStencilOp_NumBits = 3,
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};
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```
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### CustomStencil
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#### InitCustomDepthStencilContext()
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根据当前平台是否支持使用ComputeShader直接输出结果(bComputeExport)、以及是否写入Stencil缓存,以此来创建不同的资源。最终输出FCustomDepthContext。
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