Method Render

source/common/startscreen/startscreen.cpp:662–704

}

void FStartScreen::Render(bool force)
{
	static uint64_t minwaittime = 30;

	auto nowtime = I_msTime();
	// Do not refresh too often. This function gets called a lot more frequently than the screen can update.
	if (nowtime - screen->FrameTime > minwaittime || force)
	{
		screen->FrameTime = nowtime;
		screen->BeginFrame();
		twod->ClearClipRect();
		I_GetEvent();
		ValidateTexture();
		float displaywidth;
		float displayheight;
		twod->Begin(screen->GetWidth(), screen->GetHeight());

		// At this point the shader for untextured rendering has not been loaded yet, so we got to clear the screen by rendering a texture with black color.
		DrawTexture(twod, StartupTexture, 0, 0, DTA_VirtualWidthF, StartupTexture->GetDisplayWidth(), DTA_VirtualHeightF, StartupTexture->GetDisplayHeight(), DTA_KeepRatio, true, DTA_Color, PalEntry(255,0,0,0), TAG_END);

		if (HeaderTexture)
		{
			displaywidth = HeaderTexture->GetDisplayWidth();
			displayheight = HeaderTexture->GetDisplayHeight() + StartupTexture->GetDisplayHeight();
			DrawTexture(twod, HeaderTexture, 0, 0, DTA_VirtualWidthF, displaywidth, DTA_VirtualHeightF, displayheight, TAG_END);
			DrawTexture(twod, StartupTexture, 0, 32, DTA_VirtualWidthF, displaywidth, DTA_VirtualHeightF, displayheight, TAG_END);
			if (NetMaxPos >= 0) DrawTexture(twod, NetTexture, 0, displayheight - 16, DTA_VirtualWidthF, displaywidth, DTA_VirtualHeightF, displayheight, TAG_END);
		}
		else
		{
			displaywidth = StartupTexture->GetDisplayWidth();
			displayheight = StartupTexture->GetDisplayHeight();
			DrawTexture(twod, StartupTexture, 0, 0, DTA_VirtualWidthF, displaywidth, DTA_VirtualHeightF, displayheight, TAG_END);
		}

		twod->End();
		screen->Update();
		twod->OnFrameDone();
	}
	auto newtime = I_msTime();
	if ((newtime - nowtime) * 2 > minwaittime) // slow down drawing the start screen if we're on a slow GPU!
		minwaittime = (newtime - nowtime) * 2;
}

FImageSource* CreateStartScreenTexture(FBitmap& srcdata);