nanogui: Blitting
Subject:
blitting
From:
Fergal Kelly ####@####.####
Date:
8 Aug 2002 09:31:06 -0000
Message-Id: <003701c23ebc$5610a3a0$953c78c1@heysen.leop.s3group.com>
Hi,
I've an application which will have two windows in the exact same
co-ordinates. Obviously only one will ever be on screen at any one
time, but there will be a need to update one, while the other is on
screen. I assume I need to implement the blitting screen drivers
for this. The updates needed for off screen drawing will be simple
functions like GrRect, GrFillRect and GrText.
Is it a matter of implementing functions like those in fblin8.c. When
it comes to bring the hidden window onto the screen I assume some
kind of memory to screen function should be called?? Does there
have to be a draw pixel, draw horz line, draw vert line and get pixel
for storing off screen and drawing it back to the screen again??
Thanks,
Fergal
