mirror of https://github.com/axmolengine/axmol.git
155 lines
4.2 KiB
C++
155 lines
4.2 KiB
C++
/* Copyright (c) 2012 Scott Lembcke and Howling Moon Software
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* Copyright (c) 2012 cocos2d-x.org
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*
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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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*
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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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*
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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 THE
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* SOFTWARE.
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*/
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#include "CCDrawNode.h"
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#include "support/CCPointExtension.h"
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#include "shaders/CCShaderCache.h"
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NS_CC_BEGIN
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// ccVertex2F == CGPoint in 32-bits, but not in 64-bits (OS X)
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// that's why the "v2f" functions are needed
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static ccVertex2F v2fzero = (ccVertex2F){0,0};
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static inline ccVertex2F v2f(float x, float y)
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{
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return (ccVertex2F){x,y};
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}
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static inline ccVertex2F v2fadd(const ccVertex2F &v0, const ccVertex2F &v1)
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{
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return v2f(v0.x+v1.x, v0.y+v1.y);
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}
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static inline ccVertex2F v2fsub(const ccVertex2F &v0, const ccVertex2F &v1)
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{
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return v2f(v0.x-v1.x, v0.y-v1.y);
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}
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static inline ccVertex2F v2fmult(const ccVertex2F &v, float s)
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{
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return v2f(v.x * s, v.y * s);
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}
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static inline ccVertex2F v2fperp(const ccVertex2F &p0)
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{
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return v2f(-p0.y, p0.x);
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}
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static inline ccVertex2F v2fneg(const ccVertex2F &p0)
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{
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return v2f(-p0.x, - p0.y);
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}
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static inline float v2fdot(const ccVertex2F &p0, const ccVertex2F &p1)
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{
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return p0.x * p1.x + p0.y * p1.y;
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}
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static inline ccVertex2F v2fforangle(float _a_)
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{
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return v2f(cosf(_a_), sinf(_a_));
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}
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static inline ccVertex2F v2fnormalize(const ccVertex2F &p)
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{
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CCPoint r = ccpNormalize(ccp(p.x, p.y));
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return v2f(r.x, r.y);
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}
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static inline ccVertex2F __v2f(const CCPoint &v)
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{
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#ifdef __LP64__
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return v2f(v.x, v.y);
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#else
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return * ((ccVertex2F*) &v);
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#endif
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}
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static inline ccTex2F __t(const ccVertex2F &v)
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{
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return *(ccTex2F*)&v;
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}
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// implementation of CCDrawNode
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CCDrawNode::CCDrawNode()
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: m_uVao(0)
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, m_uVbo(0)
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, m_uBufferCapacity(0)
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, m_nBufferCount(0)
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, m_pBuffer(NULL)
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, m_sBlendFunc((ccBlendFunc){CC_BLEND_SRC, CC_BLEND_DST})
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, m_bDirty(false)
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{}
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CCDrawNode* CCDrawNode::create()
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{
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CCDrawNode* pRet = new CCDrawNode();
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if (pRet && pRet->init())
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{
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pRet->autorelease();
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}
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else
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{
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CC_SAFE_DELETE(pRet);
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}
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return pRet;
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}
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bool CCDrawNode::init()
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{
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m_sBlendFunc = (ccBlendFunc){CC_BLEND_SRC, CC_BLEND_DST};
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setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(kCCShader_PositionLengthTexureColor));
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ensureCapacity(512);
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glGenVertexArrays(1, &m_uVao);
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ccGLBindVAO(m_uVao);
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glGenBuffers(1, &m_uVbo);
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glBindBuffer(GL_ARRAY_BUFFER, m_uVbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(ccV2F_C4B_T2F)* m_uBufferCapacity, m_pBuffer, GL_STREAM_DRAW);
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glEnableVertexAttribArray(kCCVertexAttrib_Position);
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glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, vertices));
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glEnableVertexAttribArray(kCCVertexAttrib_Color);
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glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, colors));
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glEnableVertexAttribArray(kCCVertexAttrib_TexCoords);
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glVertexAttribPointer(kCCVertexAttrib_TexCoords, 2, GL_FLOAT, GL_FALSE, sizeof(ccV2F_C4B_T2F), (GLvoid *)offsetof(ccV2F_C4B_T2F, texCoords));
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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ccGLBindVAO(0);
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CHECK_GL_ERROR_DEBUG();
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m_bDirty = true;
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return true;
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}
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NS_CC_END
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