Mercurial > sdl-ios-xcode
view autogen.sh @ 5053:b5b42be9333c
Fixed bug #1026
Vittorio Giovara 2010-07-16 19:09:28 PDT
i was reading SDL_renderer_gles and i noticed that every time we there
is some gl call the gl state is modified with a couple of
glEnableClientState()/glDisableClientState.
While this is completely fine for desktops systems, this is a major
performace kill on mobile devices, right where opengles is
implemented.
Normal practice in this case is to update the glstate once, keep it
always the same and disable/enable other states only in very special
occasions.
On the web there's plenty of documentation (on the top of my head
http://developer.apple.com/iphone/library/documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/Performance/Performance.html#//apple_ref/doc/uid/TP40008793-CH105-SW5
) and i personally tried this.
I modified my code and got a 10 fps boost, then modified SDL_render_gles and
shifted from 40 fps to 50 fps alone -- considering that i started from ~30fps i
got an 80% performance increase with this technique.
I have attached a dif of my changes, hope that it will be included in
mainstream.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 19 Jan 2011 23:56:16 -0800 |
parents | c8d350c981ff |
children |
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#!/bin/sh # echo "Generating build information using autoconf" echo "This may take a while ..." # Generate SDL_revision.h sh build-scripts/updaterev.sh # Regenerate configuration files cat acinclude/* >aclocal.m4 found=false for autoconf in autoconf autoconf259 autoconf-2.59 do if which $autoconf >/dev/null 2>&1; then $autoconf && found=true; break; fi done if test x$found = xfalse; then echo "Couldn't find autoconf, aborting" exit 1 fi (cd test; sh autogen.sh) # Run configure for this platform echo "Now you are ready to run ./configure"