CD3DFont* font = theApp.GetSmallFont();
assert(font); //check font
char str[10]; //char array
char str1[10];
sprintf(str, " %d", theApp.playarea[0][0]->score); //converting int to string
sprintf(str1, " %d", theApp.playarea[0][0]->speed);
font->DrawText( 600, 380, 0x88ffff00, str, 0L ); //2D coords
font->DrawText( 600, 280, 0x88A2F69E, str1, 0L );
drop in frame rate
Author
okie, i got a drop in frame rate and i managed to corner down
the code to:
I am using CD3DFont* and the DrawText function, which both are
from d3dfont.h. So, if the last line of the code above is
commented out, the frame rate is ok(75+), but if it is uncommented, the frame rate drops to 25+. Whats wrong with
adding the last line?
//d3dfont.h
HRESULT DrawText( FLOAT x, FLOAT y, DWORD dwColor, TCHAR* strText, DWORD dwFlags=0L );
[edited by - edwinnie on June 3, 2002 2:34:15 AM]
The problem is that DrawText( ) is slow. You should write your own font engine. Search here for an example.
D3DFont shouldn't be THAT slow. It's not the fastest font engine you can get, but it's pretty fast nonetheless. I would look at the renderstates if I were you. Try drawing only the text, without modifying any renderstates, and see what your framerate drop is. Compare your code to Text3D sample. Your framerate drop would be appropriate if you used ID3DXFont, but it's too big for D3DFont. How big are your strings?
lucinpub: Stock DrawText isn't slow unless you're drawing many strings or have very long strings. It should be quite fast for short strings. And if you do write your own font engine, D3DFont is a very good start.
[edited by - IndirectX on June 3, 2002 6:36:13 AM]
lucinpub: Stock DrawText isn't slow unless you're drawing many strings or have very long strings. It should be quite fast for short strings. And if you do write your own font engine, D3DFont is a very good start.
[edited by - IndirectX on June 3, 2002 6:36:13 AM]
This topic is closed to new replies.
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