[odamex-bug-reporter] [Bug 1055] fullscreen appears to slowdown significantly on Windows 8 with vsync ON
- From: odamex-bugtracker@xxxxxxxxxx
- To: odamex-bug-reporter@xxxxxxxxxxxxx
- Date: Thu, 12 Jun 2014 18:51:22 +0000
http://odamex.net/bugs/show_bug.cgi?id=1055
Dr. Sean <grandpachuck187@xxxxxxxxx> changed:
What |Removed |Added
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CC| |grandpachuck187@xxxxxxxxx
--- Comment #4 from Dr. Sean <grandpachuck187@xxxxxxxxx> ---
With vid_vsync enabled, Odamex will request a "hardware surface" from SDL (and
requests a "software surface" otherwise). As the hardware surface is
essentially a buffer in the video card's memory, reading and writing directly
to the hardware surface is significantly slower than reading and writing to a
software surface, which is a buffer in system RAM.
r4993 attempts to alleviate the slowdowns when using hardware surfaces by doing
all of the rendering to a temporary software surface and then blitting to the
hardware surface at the end of the frame.
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