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CD3DFont

Started by Todd Casey Nov 22, 2000 at 3:17 PM 4 replies 1k views

Original Post

Nov 22, 2000 at 3:17 PM

I am trying to use the CD3DFont class that came with the DirectX 8 SDK. I currently have a triangle displayed on the screen to make sure that my D3D8 initialization code wasn''t failing but it works fine. I have the CD3DFont class declared as: CD3DFont *pFont = NULL; Then I try to initialize the class: pFont = new CD3DFont(_T("Arial"), 12, D3DFONT_BOLD); // I call this after I have initialized the pd3dDevice successfully pFont->InitDeviceObjects(pd3dDevice); Then between my D3DDevice BeginScene and EndScene calls I''m trying to draw text: pFont->DrawText(2, 40, 0xffffffff, _T("2D Text")); It crashes in the DrawText member function on this line: m_pd3dDevice->ApplyStateBlock( m_dwDrawTextStateBlock ); I am probably missing something small but I can''t seem to find it! Thanks for any help or ideas. Todd

SikCiv

Nov 22, 2000 at 4:41 PM

I had the same problem. I ended up using the D3DX font interface. Its much easier to use, all u have to do is create a standard HFont object, then create the D3DX font object using D3DXCreateFont and specify the HFont u created. drawing it is simple, just call ->DrawText.

Heres my code...

// CREATION

// Create a font.
HFONT Font[10];

Font[0] = CreateFont(14,0,0,0,0,0,0,0,0,0,0,PROOF_QUALITY,0, "Courier New");
if(Font[0] == NULL)
{
DebugOutput("Font[0] Failed to create HFont.");
}
else
{
// Create a 3D Font.
hr = D3DXCreateFont(lpD3DDevice, Font[0], &lpD3DXFont[0]);
if(FAILED(hr))
{
DebugOutput("Font[0] Failed to create 3D Font.");
}
}

// DRAWING...

RECT rcTemp =
MakeRc(0,(GfxSys.nVSize-65)+i*13,640,480);
hr = lpD3DXFont[0]->DrawText(szTemp, -1, &rcTemp, DT_LEFT, D3DCOLOR_ARGB(155, 155, Debug.StringColor+50, 255));

if(FAILED(hr)) DebugOutput("Failed 3D Font text blit");

Its a bit messy due to the lack of horz space..but its usable and it works fine.

Todd Casey

Author

Todd Casey

Nov 22, 2000 at 5:40 PM

Thanks for the info!

Todd

headache

Nov 24, 2000 at 2:44 AM

This is gonna sound weird but call the RestoreObjects function after you init it and that should fix it.

Todd Casey

Author

Todd Casey

Nov 24, 2000 at 9:48 AM

I tried that but with no luck. Did you get it working for yourself? Thanks.

Todd

DmGoober

Nov 24, 2000 at 10:19 AM

I haven't looked to carefully at your code and problems, but i know for a fact that the pick example that comes with the sdk prints framerate information to the d3ddevice. Have you tried looking at that?

It uses the following:

m_pFont = new CD3DFont( _T("Arial"), 12, D3DFONT_BOLD );

CD3DFont is defined in a file probably named d3dfont.cpp/.h

Be careful -- everytime the device changes (for example switching from full screen to windowed) the CD3DFont needs to be invalidated, inited, restored, etc.

HRESULT InitDeviceObjects();
HRESULT RestoreDeviceObjects();
HRESULT InvalidateDeviceObjects();
HRESULT DeleteDeviceObjects();

I'm obviously talking out of my butt since i haven't really looked at the font stuff too carefully, but i strongly suggest you look at pick.cpp (and look at d3dapp.cpp for more info.)

Hope that helps.

DmGoober

Edited by - DmGoober on November 24, 2000 11:22:59 AM

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