Use streaming vertex buffer for animating regular skinned meshes, writing to a read locked and shared vertex buffer is illegal, fix kaetemi/ryzomclassic#93

nel/include/nel/3d/mesh.h

@@ -837,7 +837,7 @@ private:
 	void	restoreOriginalSkinVertices();
 
 	// apply Skin to all vertices from _OriginalSkin* to _VBuffer.
-	void	applySkin(CSkeletonModel *skeleton);
+	void	applySkin(void *dstVb, CSkeletonModel *skeleton);
 
 
 	void	flagSkinVerticesForMatrixBlock(uint8 *skinFlags, CMatrixBlock &mb);

nel/src/3d/mesh.cpp

@@ -30,6 +30,7 @@
 #include "nel/3d/render_trav.h"
 #include "nel/3d/visual_collision_mesh.h"
 #include "nel/3d/meshvp_wind_tree.h"
+#include "nel/3d/vertex_stream_manager.h"
 
 using namespace std;
 using namespace NLMISC;
@@ -764,9 +765,38 @@ void	CMeshGeom::renderSkin(CTransformShape *trans, float alphaMRM)
 	// NB: the skeleton matrix has already been setuped by CSkeletonModel
 	// NB: the normalize flag has already been setuped by CSkeletonModel
 
+	bool supportVertexStream = ((_VBuffer.getVertexFormat() & ~(CVertexBuffer::PaletteSkinFlag | CVertexBuffer::WeightFlag))
+		== (CVertexBuffer::PositionFlag | CVertexBuffer::NormalFlag | CVertexBuffer::TexCoord0Flag))
+		&& (_VBuffer.getValueType(CVertexBuffer::TexCoord0) == CVertexBuffer::Float2)
+		&& (_OriginalSkinNormals.size()) && (!_OriginalTGSpace.size());
+	CVertexStreamManager *meshSkinManager = renderTrav->getMeshSkinManager();
+
+	if (supportVertexStream)
+	{
+		uint maxVertices = meshSkinManager->getMaxVertices();
+		uint vertexSize = meshSkinManager->getVertexSize();
+		nlassert(vertexSize == 32);
+
+		if (_OriginalSkinVertices.size() <= maxVertices)
+		{
+			// apply the skinning
+			uint8 *dstVb = meshSkinManager->lock();
+			applySkin(dstVb, skeleton);
+			meshSkinManager->unlock(_OriginalSkinVertices.size());
+		}
+		else
+		{
+			supportVertexStream = false;
+			nlwarning("Unable to animate skinned model, too many vertices");
+		}
+	}
+	else
+	{
+		nlwarning("Unable to animate skinned model, unsupported vertex format");
+	}
 
 	// apply the skinning: _VBuffer is modified.
-	applySkin(skeleton);
+	// applySkin(skeleton);
 
 
 	// Setup meshVertexProgram
@@ -786,7 +816,14 @@ void	CMeshGeom::renderSkin(CTransformShape *trans, float alphaMRM)
 	// Render the mesh.
 	//===========
 	// active VB.
+	if (supportVertexStream)
+	{
+		meshSkinManager->activate();
+	}
+	else
+	{
 		drv->activeVertexBuffer(_VBuffer);
+	}
 
 
 	// For all _MatrixBlocks
@@ -816,6 +853,11 @@ void	CMeshGeom::renderSkin(CTransformShape *trans, float alphaMRM)
 		}
 	}
 
+	if (supportVertexStream)
+	{
+		meshSkinManager->swapVBHard();
+	}
+
 	// End VertexProgram effect
 	if(useMeshVP)
 	{
@@ -1787,7 +1829,7 @@ void	CMeshGeom::restoreOriginalSkinVertices()
 
 
 // ***************************************************************************
-void	CMeshGeom::applySkin(CSkeletonModel *skeleton)
+void	CMeshGeom::applySkin(void *dstVb, CSkeletonModel *skeleton)
 {
 	// init.
 	//===================
@@ -1802,10 +1844,12 @@ void	CMeshGeom::applySkin(CSkeletonModel *skeleton)
 		skinType= SkinWithNormal;
 	else
 		skinType= SkinWithTgSpace;
+	nlassert(skinType == SkinWithNormal); // Only support the streamable vertex buffer format
 
 	// Get VB src/dst info/ptrs.
 	uint	numVertices= (uint)_OriginalSkinVertices.size();
-	uint	dstStride= _VBuffer.getVertexSize();
+	static const uint	dstStride = 32; // _VBuffer.getVertexSize();
+	uint	srcStride = _VBuffer.getVertexSize();
 	// Get dst TgSpace.
 	uint	tgSpaceStage = 0;
 	if( skinType>= SkinWithTgSpace)
@@ -1823,6 +1867,10 @@ void	CMeshGeom::applySkin(CSkeletonModel *skeleton)
 	CVertexBufferRead vba;
 	_VBuffer.lock (vba);
 
+	uint8 *dstVbPos = (uint8 *)dstVb;
+	uint8 *dstVbNormal = dstVbPos + 12;
+	uint8 *dstVbUV = dstVbPos + 24;
+
 	// For all MatrixBlocks
 	//===================
 	for(uint mb= 0; mb<_MatrixBlocks.size();mb++)
@@ -1839,25 +1887,25 @@ void	CMeshGeom::applySkin(CSkeletonModel *skeleton)
 		CVector		*srcVector= &_OriginalSkinVertices[0];
 		uint8		*srcPal= (uint8*)vba.getPaletteSkinPointer(0);
 		uint8		*srcWgt= (uint8*)vba.getWeightPointer(0);
-		uint8		*dstVector= (uint8*)vba.getVertexCoordPointer(0);
+		uint8		*dstVector = dstVbPos; // (uint8 *)vba.getVertexCoordPointer(0);
 		// Normal.
 		CVector		*srcNormal= NULL;
 		uint8		*dstNormal= NULL;
 		if(skinType>=SkinWithNormal)
 		{
 			srcNormal= &_OriginalSkinNormals[0];
-			dstNormal= (uint8*)vba.getNormalCoordPointer(0);
+			dstNormal = dstVbNormal; // (uint8 *)vba.getNormalCoordPointer(0);
 		}
 		// TgSpace.
 		CVector		*srcTgSpace= NULL;
 		uint8		*dstTgSpace= NULL;
 		if(skinType>=SkinWithTgSpace)
 		{
+			nlassert(false);
 			srcTgSpace= &_OriginalTGSpace[0];
 			dstTgSpace = (uint8 *)vba.getTexCoordPointer(0, tgSpaceStage);
 		}
 
-
 		// For all vertices that need to be computed.
 		uint		size= numVertices;
 		for(;size>0;size--)
@@ -1895,14 +1943,46 @@ void	CMeshGeom::applySkin(CSkeletonModel *skeleton)
 			srcNormal++;
 			srcTgSpace++;
 			// inc paletteSkin and dst  (all whatever skin type used...)
-			srcPal+= dstStride;
+			srcPal+= srcStride;
-			srcWgt+= dstStride;
+			srcWgt+= srcStride;
 			dstVector+= dstStride;
 			dstNormal+= dstStride;
 			dstTgSpace+= dstStride;
 		}
 	}
 
+	// Remaining vertices
+	{
+		uint8 *pFlag = &skinFlags[0];
+		CVector *srcVector = &_OriginalSkinVertices[0];
+		uint8 *dstVector = dstVbPos;
+		CVector *srcNormal = &_OriginalSkinNormals[0];
+		uint8 *dstNormal = dstVbNormal;
+		uint8 *srcUV = (uint8 *)vba.getTexCoordPointer(0, 0);
+		uint8 *dstUV = dstVbUV;
+		uint srcStride = _VBuffer.getVertexSize();
+
+		for (uint i = 0; i < numVertices; ++i)
+		{
+			if (*pFlag != NL3D_SOFTSKIN_VCOMPUTED)
+			{
+				*(CVector *)dstVector = *srcVector;
+				*(CVector *)dstNormal = *srcNormal;
+			}
+			*(CVector2f *)dstUV = *(CVector2f *)srcUV;
+
+			// inc flags.
+			pFlag++;
+			// inc src (all whatever skin type used...)
+			srcVector++;
+			srcNormal++;
+			srcUV += srcStride;
+			// inc paletteSkin and dst  (all whatever skin type used...)
+			dstVector += dstStride;
+			dstNormal += dstStride;
+			dstUV += dstStride;
+		}
+	}
 
 	// dirt
 	_OriginalSkinRestored= false;