OpenGLRenderingScreen.inl.h

 
 
 
extern void*            globalGLContext;
extern void setCurrentGLContext(void* context);
 
IMPLEMENT_CLASS_INFO(OpenGLRenderingScreen)
 
OpenGLRenderingScreen::OpenGLRenderingScreen(const kstl::string& name, CLASS_NAME_TREE_ARG) : RenderingScreen(name, PASS_CLASS_NAME_TREE_ARG)
{
    myContext = 0;
    myBindedTexture = 0;
    sBuffer = -1;
}
 
OpenGLRenderingScreen::~OpenGLRenderingScreen()
{
    if (!myIsOffScreen)
    {
    }
 
    if (sBuffer != 0xffffffff)
        glDeleteBuffers(1, &sBuffer);
 
    //  [myContext release];
    myContext = 0;
}
 
void*   OpenGLRenderingScreen::GetContextHandle()
{
    //  return (__bridge void*)myContext;
    // return myContext;
    return 0;
}
 
void    OpenGLRenderingScreen::InitModifiable()
{
    if (!myIsOffScreen)
    {
        kstl::set<CoreModifiable*>  instances;
        CoreModifiable::GetInstancesByName("Window", myParentWindowName, instances);
 
        if (instances.size())
        {
            Window* parentwindow = (Window*)(*instances.begin());
            if (!parentwindow->IsInit())
            {
                KIGS_ERROR("A rendering screen needs a parent window", 1);
                return;
            }
 
            int sizeX, sizeY;
            parentwindow->getValue("SizeX", sizeX);
            parentwindow->getValue("SizeY", sizeY);
 
            mySizeX = (unsigned int)sizeX;
            mySizeY = (unsigned int)sizeY;
 
            myContext = globalGLContext;
        
        }
    }
 
 
 
    RenderingScreen::InitModifiable();
    myIsInit = true;
 
    InitializeGL(mySizeX, mySizeY);
}
 
void OpenGLRenderingScreen::InitializeGL(int width, int height)
{
    mySizeX = (unsigned int)width;
    mySizeY = (unsigned int)height;
    glViewport(0, 0, width, height);
 
}
 
 
void    OpenGLRenderingScreen::Resize(kfloat sizeX, kfloat sizeY)
{
    // before screen is init, only update sizeX and sizeY
    if (!IsInit())
    {
        mySizeX = (unsigned int)sizeX;
        mySizeY = (unsigned int)sizeY;
    }
    else
    {
        //When resizing an offscreen surface, we keep the big surface but we let the camera clip the scene
        InitializeGL(sizeX, sizeY);
    }
}
 
void    OpenGLRenderingScreen::Update(const Timer&  timer, void* addParam)
{
 
    RendererOpenGL* renderer = (RendererOpenGL*)((ModuleRenderer*)KigsCore::Instance()->GetMainModuleInList(RendererModuleCoreIndex))->GetSpecificRenderer();
 
    renderer->SetClearColorValue(myBackDropColor[0], myBackDropColor[1], myBackDropColor[2], 0.0);
    renderer->FlushState();
    RenderingScreen::Update(timer, addParam);
    // brightness (fade) effect here
    ManageFade();
 
 
    glFlush();
    glFinish();
 
}
 
bool    OpenGLRenderingScreen::SetActive(TravState* state)
{
    //KIGS_MESSAGE("SetScreen active");
    RenderingScreen::SetActive(state);
    setCurrentGLContext(myContext);
 
    if (myIsOffScreen)
    {
        if (myBindedTexture)
        {
            glBindTexture(GL_TEXTURE_2D, myBindedTexture->GetGLID());
        }
    }
 
    return true;
}
 
void    OpenGLRenderingScreen::Release()
{
    if (myBindedTexture && myIsOffScreen)
    {
        glBindTexture(GL_TEXTURE_2D, myBindedTexture->GetGLID());
    }
 
    KIGS_ASSERT(glGetError() == GL_NO_ERROR);
}
 
void    OpenGLRenderingScreen::BindTexture(Texture* texture)
{
    myBindedTexture = (OpenGLTexture*)texture;
}
 
 
 
void OpenGLRenderingScreen::FetchPixels(int x, int y, int width, int height, void *pRGBAPixels)
{
    glFlush();
    glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pRGBAPixels);
}