On Sunday, October 20, 2002, at 10:47 PM, Alex Rice wrote:
Never mind, I was confused about what QuartzDebug is showing. Here is a helpful explanation from a OS X-pert
Based on this anecdotal evidence I would venture that Rev apps on OS X do already use Quartz thanks to Appearance Manager. Can someone who knows Quartz well write a rebuttal for that item?
--
From: "Erik M. Buck" <[EMAIL PROTECTED]>
Date: Mon Oct 21, 2002 10:21:09 PM America/Denver
To: "Alex Rice" <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
Subject: Re: QuartzDebug question
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
Quartz is two things. It is a 2d vector drawing API and it is a "window
server".
- The 2d vector drawing is the aspect of quartz the most people think about.
This is where anti-aliased lines, transparent compositing, and PDF imaging
model with floating point coordinates lives. There are ties into the font
rendering technology here too.
- The window server is a process that owns the display frame buffer/back
buffer. Ultimately, all drawing goes through the window server unless the
full screen has been captured by OpenGL/Core graphics. The window server
keeps applications from drawing outside their windows, provides drop
shadows, provides window layering, live window drags, manages flushes from
each application's window backing store into the back/frame buffer, and
swaps buffers (usually during the vertical blank when possible).
Quartz Debug primarily shows buffer flushes that are part of the window
server functionality. Quartz Debug does not particularly tell you anything
about the drawing that took place to require the buffer flush.
I expect all drawing done by windowed applications to show up in Quartz
debug regardless of whether the drawing is done by Quartz 2d, Quickdraw,
OpenGL, or direct bit manipulations in a window's backing store. How the
drawing is done will have little impact that is visible via Quartz Debug,
but of course it has tremendous impact on the quality of the graphics
produced. Quartz debug is just showing that drawing/flushing took place.
What can be deduced from this result in QuartzDebug? Is the app a first-class Quartz citizen? I guess the term "Quartz" encompasses a lot of different things. Just trying to find out if there are different levels of quartz rendering or if it's an all or nothing deal.
Alex Rice, Software Developer Architectural Research Consultants, Inc. [EMAIL PROTECTED] [EMAIL PROTECTED] _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
