mirror of https://github.com/axmolengine/axmol.git
124 lines
3.2 KiB
C++
124 lines
3.2 KiB
C++
/****************************************************************************
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "renderer/CCPrimitive.h"
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#include "renderer/CCVertexIndexBuffer.h"
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NS_CC_BEGIN
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Primitive* Primitive::create(VertexData* verts, IndexBuffer* indices, int type)
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{
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auto result = new (std::nothrow) Primitive();
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if( result && result->init(verts, indices, type))
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{
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result->autorelease();
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return result;
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}
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CC_SAFE_DELETE(result);
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return nullptr;
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}
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const VertexData* Primitive::getVertexData() const
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{
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return _verts;
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}
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const IndexBuffer* Primitive::getIndexData() const
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{
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return _indices;
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}
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Primitive::Primitive()
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: _verts(nullptr)
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, _indices(nullptr)
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, _type(GL_POINTS)
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, _start(0)
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, _count(0)
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{
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}
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Primitive::~Primitive()
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{
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CC_SAFE_RELEASE_NULL(_verts);
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CC_SAFE_RELEASE_NULL(_indices);
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}
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bool Primitive::init(VertexData* verts, IndexBuffer* indices, int type)
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{
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if( nullptr == verts ) return false;
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if(verts != _verts)
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{
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CC_SAFE_RELEASE(_verts);
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CC_SAFE_RETAIN(verts);
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_verts = verts;
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}
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if(indices != _indices)
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{
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CC_SAFE_RETAIN(indices);
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CC_SAFE_RELEASE(_indices);
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_indices = indices;
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}
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_type = type;
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return true;
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}
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void Primitive::draw()
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{
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if(_verts)
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{
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_verts->use();
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if(_indices!= nullptr)
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{
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GLenum type = (_indices->getType() == IndexBuffer::IndexType::INDEX_TYPE_SHORT_16) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _indices->getVBO());
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size_t offset = _start * _indices->getSizePerIndex();
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glDrawElements((GLenum)_type, _count, type, (GLvoid*)offset);
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}
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else
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{
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glDrawArrays((GLenum)_type, _start, _count);
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}
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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}
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}
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void Primitive::setStart(int start)
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{
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_start = start;
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}
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void Primitive::setCount(int count)
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{
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_count = count;
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}
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NS_CC_END
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