Hello,
I tried some different ways now, but everytime I cut out g2d->Print(0)
the HUD isn't displayed anymore.
Here you have some more according code:
void TheHill::ProcessFrame() {
if (!this->g3d->BeginDraw(this->csp_engine->GetBeginDrawFlags() |
CSDRAW_3DGRAPHICS))
return;
if (!this->g3d->BeginDraw(CSDRAW_2DGRAPHICS))
return;
// processing and writing text onto the hud
this->g2d->FinishDraw();
this->g2d->Print(0);
this->view->Draw();
}
void TheHill::FinishFrame() {
this->csp_g3d->FinishDraw();
this->csp_g3d->Print(0);
}
this->g2d->FinishDraw() and this->g2d->Print(0) do not work if they are
called after this->view->Draw().
The same if I call those functions within FinishFrame().
Greetings,
Thomas
Jörg Fischer wrote:
> Hi,
> Thomas Teufel schrieb:
>
>> Hello!
>>
>> I have a problem with my 2d graphics driver.
>> I'm displaying a head up display with g2d which overlays the
>> g3d-rendered objects.
>>
>> Every thing works but the hud flickers.
>> But I am writing text onto the hud every renderloop.
>> Is it possible, that the g2d has a lower redraw rate than the g3d?
>>
>> Here is some according code I'm using for this:
>> // initialises g3d and g2d
>> csRef<iGraphics3D> g3d = csQueryRegistry<iGraphics3D>(GetObjectRegistry());
>> csRef<iGraphics2D> g2d = g3d->GetDriver2D();
>>
>> g3d->BeginDraw(CSDRAW_2DGRAPHICS);
>>
>> // writes text onto the hud
>> g2d->Write(font, 30, 30, fg, bg, "Test");
>>
>> // finishes 2d drawing
>> g2d->FinishDraw();
>> g2d->Print(0);
>>
> ^^^^^^
> I think this is wrong, you never need to call Fishdraw() or Print() on
> your g2d;
> you have to call it on the g3d.
>
> If you call g3d->Print(0) elsewhere, this causes the flickering.
> g3d->Print() (and g2d->Print() too) will swap the front- and backbuffer.
> This has to be done exactly once in a frame.
>
> -- J.Fischer
>
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