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Re: [Qemu-devel] [PATCH] OpenGL for OS X
From: |
Gwenole Beauchesne |
Subject: |
Re: [Qemu-devel] [PATCH] OpenGL for OS X |
Date: |
Wed, 6 Feb 2008 07:00:21 +0100 |
Hi,
2008/2/5, Fabrice Bellard <address@hidden>:
> This is an SDL related issue (i.e. SDL may or may not use OpenGL to
> display graphics). Fixing SDL for Mac OS X would also be interesting.
I think SDL trunk (1.3) supports OpenGL rendering more specifically
for various platforms.
Besides, on my MacBook, fullscreen SDL with a HW surface can indeed
perform much better (550 Mpixels/sec) than fullscreen GL (190
Mpixels/sec). With a SW surface, results are equivalent to GL though.
In windowed (800x600) mode, SDL performs at 28 Mpixels/sec and GL at
150 Mpixels/sec. So, SDL 1.2 for OSX (CG?) in windowed mode is indeed
sub-optimal. I have not tried with SDL trunk yet.
You can get my tests as svn co
http://svn.beauchesne.info/svn/gwenole/projects/blitter-tests/trunk
blitter-tests
Note: I am not sure if I am using GL/PBOs correctly though I followed
the specs. I mean the tests run e.g. on Linux but not on Windows with
the same level of drivers (nvidia 169.xx). In the latter case, the
program crashes in glUnmapBuffer()...
Regards,
Gwenolé.
Re: [Qemu-devel] [PATCH] OpenGL for OS X, Mike Kronenberg, 2008/02/16