/*-------------------------------------------------------------------------
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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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