bool MGRDrawNode::init()
{
_blendFunc = BlendFunc::ALPHA_PREMULTIPLIED;
setGLProgramState(GLProgramState::getOrCreateWithGLProgramName(GLProgram::SHADER_NAME_POSITION_LENGTH_TEXTURE_COLOR));
ensureCapacity(512);
ensureCapacityGLPoint(64);
ensureCapacityGLLine(256);
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacity, _buffer, GL_STREAM_DRAW);
glGenBuffers(1, &_vboGLLine);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLLine);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLLine, _bufferGLLine, GL_STREAM_DRAW);
glGenBuffers(1, &_vboGLPoint);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLPoint);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLPoint, _bufferGLPoint, GL_STREAM_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
CHECK_GL_ERROR_DEBUG();
_dirty = true;
_dirtyGLLine = true;
_dirtyGLPoint = true;
return true;
}
void DrawNode::drawPoint(const Vec2& position, const float pointSize, const Color4F &color)
{
ensureCapacityGLPoint(1);
V2F_C4B_T2F *point = (V2F_C4B_T2F*)(_bufferGLPoint + _bufferCountGLPoint);
V2F_C4B_T2F a = {position, Color4B(color), Tex2F(pointSize,0)};
*point = a;
_bufferCountGLPoint += 1;
_dirtyGLPoint = true;
}
void DrawNode::drawPoints(const Vec2 *position, unsigned int numberOfPoints, const float pointSize, const Color4F &color)
{
ensureCapacityGLPoint(numberOfPoints);
V2F_C4B_T2F *point = (V2F_C4B_T2F*)(_bufferGLPoint + _bufferCountGLPoint);
for(unsigned int i=0; i < numberOfPoints; i++,point++)
{
V2F_C4B_T2F a = {position[i], Color4B(color), Tex2F(pointSize,0)};
*point = a;
}
_bufferCountGLPoint += numberOfPoints;
_dirtyGLPoint = true;
}
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));
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));
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));
// Texture coord as pointsize
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));
GL::bindVAO(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
else
{
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)* _bufferCapacity, _buffer, GL_STREAM_DRAW);
glGenBuffers(1, &_vboGLLine);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLLine);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLLine, _bufferGLLine, GL_STREAM_DRAW);
glGenBuffers(1, &_vboGLPoint);
glBindBuffer(GL_ARRAY_BUFFER, _vboGLPoint);
glBufferData(GL_ARRAY_BUFFER, sizeof(V2F_C4B_T2F)*_bufferCapacityGLPoint, _bufferGLPoint, GL_STREAM_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 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/WP8 */
this->init();
});
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
#endif
return true;
}
