Re: [Mesa3d-dev] Bitmap and Pixmap Positioning

[Allen B. <ba...@lo...>]

Brian Paul wrote:
> 
> Allen Barnett wrote:
> > Maybe Mesa
> > could be configured w/o Glide by default now that DRI is the way to go?
> 
> Try ./configure --without-glide

(OK. I just meant to make --without-glide the default.)

Also, about raster images: I see that you added a glWindowPosMESA
extension which doesn't suffer from the viewport clipping effect of
glRasterPos. However, the units of glWindowPos are the direct window
coordinates. I think I need something somewhere in between, i.e., to
draw an image at coordinates which are transformed by the
projection/modelview matrices but whose origin may be outside the
viewport. I know about the glBitmap(0,0,0,0,xmove,ymove,NULL) trick, but
the xmove/ymove coordinates are in pixels, not model units. The
following seems to work OK:

glGet viewing matrices
gluProject( mx, my, mz, viewing matrices, &wx, &wy, &wz);
glWindowPosMESA( wx, wy );
glDrawPixels(...);

but this seems inefficient (as well as requiring a MESA extension). Is
there some better trick I'm missing?

Thanks,
Allen