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// 妯″瀷鏁版嵁 bool ModelLoaderMdx::loadGeosets(Ogre::MeshPtr model, MdxDataStreamPtr dataStream, int size) { unsigned int index = 0; while(size > 0) { int geosetSize = dataStream->read<int>(); size -= geosetSize; Ogre::String meshName = m_modelName + Ogre::String("_sub_") + Ogre::StringConverter::toString(index++); Ogre::SubMesh* subMesh = model->createSubMesh(meshName); // 紜歡緙撳啿緙栧彿 // 鍒嗗埆涓洪《鐐瑰潗鏍?娉曠嚎 璐村浘鍧愭爣 #define HARDWARE_BUFFER_SOURCE_VERTEX 0 #define HARDWARE_BUFFER_SOURCE_NORMAL 1 #define HARDWARE_BUFFER_SOURCE_TEXPOS 2 // // 欏剁偣鏁版嵁 // if(!expectTag(dataStream, 'VRTX')) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "Expect VRTX data for geoset", "ModelLoaderMdx::loadGeosets"); } unsigned int vertexCount = dataStream->read<unsigned int>(); // 涓嶄嬌鐢ㄥ叡浜《鐐規(guī)暟鎹? // 姣忎釜SubMesh閮藉垱寤鴻嚜宸辯殑VertexData subMesh->useSharedVertices = false; subMesh->vertexData = OGRE_NEW Ogre::VertexData(); subMesh->vertexData->vertexStart = 0; subMesh->vertexData->vertexCount = vertexCount; subMesh->vertexData->vertexDeclaration->addElement( HARDWARE_BUFFER_SOURCE_VERTEX, 0, Ogre::VET_FLOAT3, Ogre::VES_POSITION); size_t vertexSize = sizeof(float) * 3; assert(subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_VERTEX) == vertexSize); if (subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_VERTEX) != vertexSize) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "VertexSize error", "ModelLoaderMdx::loadGeoset"); } Ogre::HardwareVertexBufferSharedPtr vertexBuffer; vertexBuffer = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer( vertexSize, vertexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); void* vertexBufferData = vertexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD); unsigned int vertexBufferDataPos = 0; for (unsigned int i = 0; i < vertexCount; ++i) { Ogre::Vector3 data( dataStream->read<float>(), dataStream->read<float>(), dataStream->read<float>() ); transformCoord(data); memcpy((char*)vertexBufferData + vertexBufferDataPos, &data, sizeof(Ogre::Vector3)); vertexBufferDataPos += sizeof(Ogre::Vector3); } vertexBuffer->unlock(); subMesh->vertexData->vertexBufferBinding->setBinding(HARDWARE_BUFFER_SOURCE_VERTEX, vertexBuffer); // // 娉曠嚎鏁版嵁 // if(!expectTag(dataStream, 'NRMS')) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "Expect NRMS data for material", "ModelLoaderMdx::loadGeosets"); } unsigned int normalCount = dataStream->read<unsigned int>(); if(normalCount != vertexCount) { std::stringstream stream; stream << "Normal count mismatch, " << normalCount << " normals for " << vertexCount << " vertices)!"; OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, stream.str(), "ModelLoaderMdx::loadGeoset"); } subMesh->vertexData->vertexDeclaration->addElement( HARDWARE_BUFFER_SOURCE_NORMAL, 0, Ogre::VET_FLOAT3, Ogre::VES_NORMAL); size_t normalSize = sizeof(float) * 3; assert(subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_NORMAL) == normalSize); if (subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_NORMAL) != normalSize) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "NormalSize error", "ModelLoaderMdx::loadGeoset"); } Ogre::HardwareVertexBufferSharedPtr normalBuffer; normalBuffer = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer( normalSize, normalCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); void* normalBufferData = normalBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD); unsigned int normalBufferDataPos = 0; for (unsigned int i = 0; i < normalCount; ++i) { Ogre::Vector3 data( dataStream->read<float>(), dataStream->read<float>(), dataStream->read<float>() ); transformCoord(data); memcpy((char*)normalBufferData + normalBufferDataPos, &data, sizeof(Ogre::Vector3)); normalBufferDataPos += sizeof(Ogre::Vector3); } normalBuffer->unlock(); subMesh->vertexData->vertexBufferBinding->setBinding(HARDWARE_BUFFER_SOURCE_NORMAL, normalBuffer); …………
// // 欏剁偣绱㈠紩 // if(!expectTag(dataStream, 'PVTX')) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "Expect PVTX data for geoset", "ModelLoaderMdx::loadGeosets"); } unsigned int indexCount = dataStream->read<unsigned int>(); assert(totalIndexCount == indexCount); if (totalIndexCount != indexCount) { std::stringstream stream; stream << "indexCount is " << indexCount << ", but totalIndexCount for all faces is " << totalIndexCount; OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, stream.str(), "ModelLoaderMdx::loadGeoset"); } subMesh->indexData->indexStart = 0; subMesh->indexData->indexCount = indexCount; Ogre::HardwareIndexBufferSharedPtr indexBuffer; indexBuffer = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer( Ogre::HardwareIndexBuffer::IT_16BIT, indexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); void* indexBufferData = indexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD); dataStream->read(indexBufferData, indexCount * sizeof(unsigned short)); // 涓夎褰㈠弽杞? 灝嗗師鏉ョ殑鍙嶉潰鏈濆 unsigned short* tmpData = (unsigned short*)indexBufferData; for (unsigned int i = 0; i < indexCount; i += 3) { unsigned short tmp = tmpData[i + 1]; tmpData[i + 1] = tmpData[i + 2]; tmpData[i + 2] = tmp; } indexBuffer->unlock(); subMesh->indexData->indexBuffer = indexBuffer; subMesh->operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST; ………… // 鏉愯川ID unsigned int materialID = dataStream->read<unsigned int>(); Ogre::String materialName = m_modelName + Ogre::String("_") + boost::lexical_cast<Ogre::String>(materialID); subMesh->setMaterialName(materialName); ………… // // 璐村浘鍧愭爣 // if(!expectTag(dataStream, 'UVBS')) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "Expect UVBS data for geoset", "ModelLoaderMdx::loadGeosets"); } unsigned int texturePositionCount = dataStream->read<unsigned int>(); if(texturePositionCount != vertexCount) { std::stringstream stream; stream << "Texture position count mismatch, " << texturePositionCount << " texture positions for " << vertexCount << " vertices)!"; OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, stream.str(), "ModelLoaderMdx::loadGeoset"); } // TextureCoord Data subMesh->vertexData->vertexDeclaration->addElement( HARDWARE_BUFFER_SOURCE_TEXPOS, 0, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES); size_t texPosSize = sizeof(float) * 2; assert(subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_TEXPOS) == texPosSize); if (subMesh->vertexData->vertexDeclaration->getVertexSize(HARDWARE_BUFFER_SOURCE_TEXPOS) != texPosSize) { OGRE_EXCEPT(Ogre::Exception::ERR_INTERNAL_ERROR, "TexturePositionSize error", "ModelLoaderMdx::loadGeoset"); } Ogre::HardwareVertexBufferSharedPtr texPosBuffer; texPosBuffer = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer( texPosSize, texturePositionCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); void* texPosBufferData = texPosBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD); dataStream->read(texPosBufferData, texPosSize * texturePositionCount); texPosBuffer->unlock(); subMesh->vertexData->vertexBufferBinding->setBinding(HARDWARE_BUFFER_SOURCE_TEXPOS, texPosBuffer); } return true; }
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