genesis-3d_engine/Engine/rendersystem/base/BufferData.cc

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

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****************************************************************************/

#include "stdneb.h"
#ifdef __OSX__
#include "../rendersystem/base/BufferData.h"
#include "memory/memory.h"
#else
#include "rendersystem/base/BufferData.h"
#include "foundation/memory/memory.h"
#endif
namespace RenderBase
{
	void _copyVertexData(const VertexStream& from, void* to, int vertexByteSize, int vertexCount)
	{

		//С<><D0A1>λ<EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD>У<EFBFBD><D0A3>ȺŸ<C8BA>ֵ<EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD>ڴ濽<DAB4><E6BFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ܶ<EFBFBD><DCB6>ܶࡣ
		//<2F><>xmemcpy<70><79>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>߾<EFBFBD><DFBE><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD>ɵģ<C9B5><C4A3>ų<EFBFBD>С<EFBFBD><D0A1>120<32>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>ڵĿ<DAB5><C4BF><EFBFBD><EFBFBD><EFBFBD>gcc<63><63><EFBFBD>ڴ濽<DAB4><E6BFBD><EFBFBD><EFBFBD>10<31><30><EFBFBD><EFBFBD>
		//<2F>ȺŸ<C8BA>ֵ<EFBFBD><D6B5><EFBFBD>ȱ<EFBFBD><C8B1><EFBFBD><=128<32>ֽڣ<D6BD><DAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD>ֳ<EFBFBD><D6B3>ı<EFBFBD><C4B1><EFBFBD>

		//<2F><><EFBFBD><EFBFBD>Ⱦϵͳ<CFB5>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD>С<EFBFBD><D0A1>λ<EFBFBD><CEBB>4byte, <20><>һ<EFBFBD><D2BB>int32<33>Ĵ<EFBFBD>С
		n_assert(vertexByteSize > 0);
		n_assert(NULL != from.data);
		n_assert(NULL != to);
		n_assert((from.elemSizeInByte % 4) == 0);
		n_assert((vertexByteSize % 4) == 0);

		int data_stride4 = from.elemSizeInByte / 4;
		int vertex_stride4 = vertexByteSize / 4;
		const uint32* buffer32 = (const uint32*)(from.data);
		uint32* dest = (uint32*)(((uint8*)to) + from.offsetInByte);

		switch(data_stride4)
		{
		case 1:
			{		
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallOne((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallOne(buffer32, dest);
#endif
					++buffer32;
					dest += vertex_stride4;
				}
				break;
			}
		case 2:
			{
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallTwo((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallTwo(buffer32, dest);
#endif

					buffer32 += 2;
					dest += vertex_stride4;
				}
				break;
			}
		case 3:
			{
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallThree((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallThree(buffer32, dest);
#endif

					buffer32 += 3;
					dest += vertex_stride4;
				}
				break;
			}
		case 4:
			{
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallFour((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallFour(buffer32, dest);
#endif
					buffer32 += 4;
					dest += vertex_stride4;
				}
				break;
			}
		case 5:
			{
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallFive((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallFive(buffer32, dest);
#endif

					buffer32 += 5;
					dest += vertex_stride4;
				}
				break;
			}
		case 6://VertexComponent::SkinJIndices<65><73>VertexComponent::SkinWeights<74>Ǻ<EFBFBD><C7BA><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD>Ի<EFBFBD><D4BB><EFBFBD>6<EFBFBD><36><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			{
				while(vertexCount--)
				{
#if __OSX__
					Memory::CopySmallSix((size_t*)buffer32, (size_t*)dest);
#else
					Memory::CopySmallSix(buffer32, dest);
#endif

					buffer32 += 6;
					dest += vertex_stride4;
				}
				break;
			}
		default:
			n_error("error vertex data size");//ֻ<><D6BB><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5>Ǽ<EFBFBD><C7BC>ִ<EFBFBD>С
			break;
		}

	}

	void DirectCopyVertexDataToGraphicBuffer(const VertexBufferData& source, void* to, int vertexByteSize)
	{
		const VertexStreams& dataStreams = source.vertex.vertexComponentStreams;
		if (source.vertex.vertexComponentStreams.Size() == 1
			&& source.vertex.vertexComponentStreams[0].elemSizeInByte == vertexByteSize
			&& source.vertex.vertexComponentStreams[0].data)
		{
			Memory::Copy(dataStreams[0].data,to, vertexByteSize * source.vertexCount);
		}
		else
		{
			for (int i = 0; i < dataStreams.Size(); ++i)
			{
				VertexStream stream = dataStreams[i];
				if (stream.data)
				{
					_copyVertexData(stream, to, vertexByteSize, source.vertexCount);
				}
			}
		}

	}

	int IndexBufferData::SizeOf(IndexType type)
	{
		switch(type)
		{
		case Int16:
			return 2;
		case Int32:
			return 4;
		default:
			return 0;
		}
	}
}