Keep densely packed array of world-space bboxes in AABBoxRasterizerSSE

rygorous · Feb 2, 2013 · bd29f46 · bd29f46
1 parent 28e1833
commit bd29f46
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Showing 4 changed files with 26 additions and 8 deletions.
diff --git a/SoftwareOcclusionCulling/AABBoxRasterizerSSE.cpp b/SoftwareOcclusionCulling/AABBoxRasterizerSSE.cpp
@@ -20,6 +20,7 @@
 AABBoxRasterizerSSE::AABBoxRasterizerSSE()
 	: mNumModels(0),
 	  mpTransformedAABBox(NULL),
+	  mpWorldBoxes(NULL),
 	  mpBBoxVisible(NULL),
 	  mpNumTriangles(NULL),
 	  mpRenderTargetPixels(NULL),
@@ -45,6 +46,7 @@ AABBoxRasterizerSSE::~AABBoxRasterizerSSE()
 	_aligned_free(mProjMatrix);
 	SAFE_DELETE_ARRAY(mpVisible);
 	SAFE_DELETE_ARRAY(mpTransformedAABBox);
+	SAFE_DELETE_ARRAY(mpWorldBoxes);
 	SAFE_DELETE_ARRAY(mpBBoxVisible);
 	SAFE_DELETE_ARRAY(mpNumTriangles);
 }
@@ -74,6 +76,7 @@ void AABBoxRasterizerSSE::CreateTransformedAABBoxes(CPUTAssetSet **pAssetSet, UI
 
 	mpVisible = new bool[mNumModels];
 	mpTransformedAABBox = new TransformedAABBoxSSE[mNumModels];
+	mpWorldBoxes = new WorldBBox[mNumModels];
 	mpBBoxVisible = new bool[mNumModels];
 	mpNumTriangles = new UINT[mNumModels];
 
@@ -90,6 +93,7 @@ void AABBoxRasterizerSSE::CreateTransformedAABBoxes(CPUTAssetSet **pAssetSet, UI
 				pModel = (CPUTModelDX11*)pRenderNode;
 
 				mpTransformedAABBox[modelId].CreateAABBVertexIndexList(pModel);
+				pModel->GetBoundsWorldSpace(&mpWorldBoxes[modelId].mCenter, &mpWorldBoxes[modelId].mHalf);
 				mpNumTriangles[modelId] = 0;
 				for(int meshId = 0; meshId < pModel->GetMeshCount(); meshId++)
 				{
@@ -181,4 +185,15 @@ void AABBoxRasterizerSSE::Render(CPUTAssetSet **pAssetSet,
 		}
 	}
 	mNumCulled =  mNumModels - count;
+}
+
+//------------------------------------------------------------------------
+// Calculate frustum culling state for a bunch of models
+//------------------------------------------------------------------------
+void AABBoxRasterizerSSE::CalcInsideFrustum(CPUTFrustum *pFrustum, UINT start, UINT end)
+{
+	for(UINT i = start; i < end; i++)
+	{
+		mpBBoxVisible[i] = pFrustum->IsVisible(mpWorldBoxes[i].mCenter, mpWorldBoxes[i].mHalf);
+	}
 }
diff --git a/SoftwareOcclusionCulling/AABBoxRasterizerSSE.h b/SoftwareOcclusionCulling/AABBoxRasterizerSSE.h
@@ -85,10 +85,19 @@ class AABBoxRasterizerSSE : public AABBoxRasterizer
 			return numCulledTris;
 		}
 
+		void CalcInsideFrustum(CPUTFrustum *pFrustum, UINT start, UINT end);
+
 
 	protected:
+		struct WorldBBox
+		{
+			float3 mCenter;
+			float3 mHalf;
+		};
+
 		UINT mNumModels;
 		TransformedAABBoxSSE *mpTransformedAABBox;
+		WorldBBox *mpWorldBoxes;
 		bool *mpBBoxVisible;
 		UINT *mpNumTriangles;
 		__m128 *mViewMatrix;

diff --git a/SoftwareOcclusionCulling/AABBoxRasterizerSSEMT.cpp b/SoftwareOcclusionCulling/AABBoxRasterizerSSEMT.cpp
@@ -73,10 +73,7 @@ void AABBoxRasterizerSSEMT::IsInsideViewFrustum(UINT taskId, UINT taskCount)
 		end   = start +  numModelsPerTask2;
 	}
 
-	for(UINT i = start; i < end; i++)
-	{
-		mpBBoxVisible[i] = mpTransformedAABBox[i].IsInsideViewFrustum(mpCamera);
-	}
+	CalcInsideFrustum(&mpCamera->mFrustum, start, end);
 }
 
 //-------------------------------------------------------------------------------

diff --git a/SoftwareOcclusionCulling/AABBoxRasterizerSSEST.cpp b/SoftwareOcclusionCulling/AABBoxRasterizerSSEST.cpp
@@ -34,10 +34,7 @@ AABBoxRasterizerSSEST::~AABBoxRasterizerSSEST()
 void AABBoxRasterizerSSEST::IsInsideViewFrustum(CPUTCamera *pCamera)
 {
 	mpCamera = pCamera;
-	for(UINT i = 0; i < mNumModels; i++)
-	{
-		mpBBoxVisible[i] = mpTransformedAABBox[i].IsInsideViewFrustum(mpCamera);
-	}
+	CalcInsideFrustum(&pCamera->mFrustum, 0, mNumModels);
 }
 
 //------------------------------------------------------------------------------