标签：def let cocos rect rda sizeof res event dispatch
1.诱因
近期，项目接入了Bugly, 上报了一些平常测试不出来，或者很难重现的bug，这类bug非常难排查。原因有二，第一，问题无法重现，第二，修改了无法立即验证结果。有一个问题困恼了我很久，就是一直报这块的代码出错。(dispatchEvent报错)
void Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeInit(JNIEnv* env, jobject thiz, jint w, jint h)
{
auto director = cocos2d::Director::getInstance();
auto glview = director->getOpenGLView();
if (!glview)
{
glview = cocos2d::GLViewImpl::create("Android app");
glview->setFrameSize(w, h);
director->setOpenGLView(glview);
//cocos_android_app_init(env, thiz);
cocos2d::Application::getInstance()->run();
}
else
{
cocos2d::GL::invalidateStateCache();
cocos2d::GLProgramCache::getInstance()->reloadDefaultGLPrograms();
cocos2d::DrawPrimitives::init();
cocos2d::VolatileTextureMgr::reloadAllTextures();
cocos2d::EventCustom recreatedEvent(EVENT_RENDERER_RECREATED);
director->getEventDispatcher()->dispatchEvent(&recreatedEvent);
director->setGLDefaultValues();
}
}
2.分析问题
这个一看就是为了防止安卓后台返回资源重建，就去查找所有有做资源重建的类，这一看就找到了以下代码。
bool DrawNode::init()
{
_blendFunc = BlendFunc::ALPHA_PREMULTIPLIED;
setGLProgramState(GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_LENGTH_TEXTURE_COLOR));
ensureCapacity(512);
ensureCapacityGLPoint(64);
ensureCapacityGLLine(256);
if (Configuration::getInstance()->supportsShareableVAO())
{
glGenVertexArrays(1, &_vao);
GL::bindVAO(_vao);
}
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)* _bufferCapacity, _buffer, GL_STREAM_DRAW);
// vertex
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_POSITION);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, vertices));
// color
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_COLOR);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, colors));
// texcood
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_TEX_COORD);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, texCoords));
if (Configuration::getInstance()->supportsShareableVAO())
{
glGenVertexArrays(1, &_vaoGLLine);
GL::bindVAO(_vaoGLLine);
}
glGenBuffers(1, &_vboGLLine);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLLine);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLLine, _bufferGLLine, GL_STREAM_DRAW);
// vertex
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_POSITION);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, vertices));
// color
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_COLOR);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, colors));
// texcood
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_TEX_COORD);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, texCoords));
if (Configuration::getInstance()->supportsShareableVAO())
{
glGenVertexArrays(1, &_vaoGLPoint);
GL::bindVAO(_vaoGLPoint);
}
glGenBuffers(1, &_vboGLPoint);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLPoint);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLPoint, _bufferGLPoint, GL_STREAM_DRAW);
// vertex
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_POSITION);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, vertices));
// color
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_COLOR);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_COLOR, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, colors));
// texcood
glEnableVertexAttribArray(GLProgram::VERTEX_ATTRIB_TEX_COORD);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, sizeof(V2F_C4B_T2F), (GLvoid *)offsetof(V2F_C4B_T2F, texCoords));
glBindBuffer(GL_ARRAY_BUFFER, 0);
if (Configuration::getInstance()->supportsShareableVAO())
{
GL::bindVAO(0);
}
CHECK_GL_ERROR_DEBUG();
_dirty = true;
_dirtyGLLine = true;
_dirtyGLPoint = true;
#if CC_ENABLE_CACHE_TEXTURE_DATA
// Need to listen the event only when not use batchnode, because it will use VBO
auto listener = EventListenerCustom::create(EVENT_RENDERER_RECREATED, [this](EventCustom* event){
/** listen the event that renderer was recreated on Android */
this->init();//此处会一直添加监听，重复添加
});
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
#endif
return true;
}
[COCOS2DX-LUA]0-004.cocos2dx中的DrawNode的init的方法问题
标签：def let cocos rect rda sizeof res event dispatch
原文地址：https://www.cnblogs.com/superdo/p/11386756.html
