Thread: openGL text in multiple windows

I have decided to try drawing text using wglUseFontBitmaps() (in openGL). I have multple windows, and I want to be able to draw on them with the same font. The implementation I have so far is this :

Code:

int base;
HFONT	font;

void printText (const char *input, ...){
	char		text[256];
	va_list		ap;

	if (input == NULL) return;

	va_start(ap, input);
	vsprintf(text, input, ap);
	va_end(ap);

	glPushAttrib(GL_LIST_BIT);
	glListBase(base - 32);

	glCallLists(strlen(text), GL_UNSIGNED_BYTE, text);
	glPopAttrib();
}

void killFont(){
	glDeleteLists(base, 96);
}

void gui_drawtext(char *text, Window *win){
	HFONT	oldfont;

	if (win){
		wglMakeCurrent(win->hdc, win->hrc);

		oldfont = (HFONT)SelectObject (win->hdc, font);
		wglUseFontBitmaps (win->hdc, 32, 96, base);
		SelectObject (win->hdc, oldfont);

		glRasterPos2f(20.0F, 0.0F);

		printText(text);

		killFont();
	}
}

void buildLargeFont(){
	base = glGenLists(96);

	font = CreateFont(20, 0, 0, 0, 100, FALSE, FALSE, FALSE,
				ANSI_CHARSET, OUT_TT_PRECIS, CLIP_DEFAULT_PRECIS,
				ANTIALIASED_QUALITY, FF_DONTCARE|DEFAULT_PITCH, "Comic Sans MS");
}

I suspect that this implementation is very slow though, because wglUseFontBitmaps() is called on every frame when text is drawn. Does anyone know how to make this faster ? Keep in mind that I have to use multiple windows, with each window its own DC and RC;

Interesting. Consider raster fonts.