Hi there,
I am now updating to 4.0 and have problems updating my custom commands where I would do custom drawing.
Here is an example how I accomplished this in V3 -
I would create a custom command and draw my stuff in the callback function:
AnimatedTextureRender::AnimatedTextureRender(Size s, Texture2D *texture,bool stretchTexture){
mTexture = texture;
_stretchTexture = stretchTexture;
setGLProgram(GLProgramCache::getInstance()->getGLProgram(GLProgram::SHADER_NAME_POSITION_TEXTURE));
cocos2d::Texture2D::TexParams tp1 = {GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT};
mTexture->setTexParameters(tp1);
mTexture->retain();
this->setContentSize(s);
_s = s;
autorelease();
this->scheduleUpdate();
}
void AnimatedTextureRender::draw(cocos2d::Renderer *renderer, const cocos2d::Mat4& transform, uint32_t flags){
mCustomCommand.init(_globalZOrder);
mCustomCommand.func = CC_CALLBACK_0(AnimatedTextureRender::onDraw, this, transform, flags);
renderer->addCommand(&mCustomCommand);
}
void AnimatedTextureRender::onDraw(const cocos2d::Mat4 &transform, uint32_t flags){
auto glProgram = getGLProgram();
glProgram->use();
glProgram->setUniformsForBuiltins(transform);
GL::bindTexture2D(mTexture->getName());
GL::enableVertexAttribs(GL::VERTEX_ATTRIB_FLAG_POSITION | GL::VERTEX_ATTRIB_FLAG_TEX_COORD);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_POSITION, 2, GL_FLOAT, GL_FALSE, 0, _groundVectorData);
glVertexAttribPointer(GLProgram::VERTEX_ATTRIB_TEX_COORD, 2, GL_FLOAT, GL_FALSE, 0, _textureVectorData);
glDrawArrays(GL_TRIANGLE_STRIP, 0, (GLsizei)4);
CC_INCREMENT_GL_DRAWS(1);
}
Could anybody help me to convert this code to V4 @zhangxm, @slackmoehrle ?
I cannot really find a tutorial where this is explained in detail, looking into https://docs.cocos2d-x.org/cocos2d-x/v4/en/upgradeGuide/customCommandTutorial.html helped a bit - but was not enough for me to understand what I need to do.
Any help is appreciated 