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90 lines
2.3 KiB
90 lines
2.3 KiB
/*------------------------------------------------------------------------- |
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* drawElements Quality Program Reference Renderer |
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* ----------------------------------------------- |
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* |
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* Copyright 2014 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*//*! |
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* \file |
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* \brief Vertex packet and Vertex packet allocator |
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*//*--------------------------------------------------------------------*/ |
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#include "rrVertexPacket.hpp" |
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namespace rr |
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{ |
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VertexPacket::VertexPacket (void) |
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{ |
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} |
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VertexPacket::~VertexPacket (void) |
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{ |
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} |
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VertexPacketAllocator::VertexPacketAllocator (const size_t numberOfVertexOutputs) |
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: m_numberOfVertexOutputs(numberOfVertexOutputs) |
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{ |
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} |
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VertexPacketAllocator::~VertexPacketAllocator (void) |
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{ |
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for (size_t i = 0; i < m_allocations.size(); ++i) |
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delete [] m_allocations[i]; |
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m_allocations.clear(); |
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} |
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std::vector<VertexPacket*> VertexPacketAllocator::allocArray (size_t count) |
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{ |
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if (!count) |
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return std::vector<VertexPacket*>(); |
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const size_t extraVaryings = (m_numberOfVertexOutputs == 0) ? (0) : (m_numberOfVertexOutputs-1); |
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const size_t packetSize = sizeof(VertexPacket) + extraVaryings * sizeof(GenericVec4); |
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std::vector<VertexPacket*> retVal; |
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deInt8* ptr = new deInt8[packetSize * count]; // throws bad_alloc => ok |
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// *.push_back might throw bad_alloc |
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try |
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{ |
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// run ctors |
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for (size_t i = 0; i < count; ++i) |
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retVal.push_back(new (ptr + i*packetSize) VertexPacket()); // throws bad_alloc |
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m_allocations.push_back(ptr); // throws bad_alloc |
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} |
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catch (std::bad_alloc& ) |
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{ |
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delete [] ptr; |
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throw; |
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} |
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return retVal; |
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} |
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VertexPacket* VertexPacketAllocator::alloc (void) |
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{ |
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const size_t poolSize = 8; |
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if (m_singleAllocPool.empty()) |
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m_singleAllocPool = allocArray(poolSize); |
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VertexPacket* packet = *--m_singleAllocPool.end(); |
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m_singleAllocPool.pop_back(); |
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return packet; |
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} |
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} // rr
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