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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 edaf3e364a05
children
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Summary: Simple DirectMedia Layer
Name: SDL
Version: @SDL_VERSION@
Release: 1
Source: http://www.libsdl.org/release/%{name}-%{version}.tar.gz
URL: http://www.libsdl.org/
License: LGPL
Group: System Environment/Libraries
BuildRoot: %{_tmppath}/%{name}-%{version}-buildroot
Prefix: %{_prefix}
%ifos linux
Provides: libSDL-1.2.so.0
%endif

%define __defattr %defattr(-,root,root)
%define __soext so

%description
This is the Simple DirectMedia Layer, a generic API that provides low
level access to audio, keyboard, mouse, and display framebuffer across
multiple platforms.

%package devel
Summary: Libraries, includes and more to develop SDL applications.
Group: Development/Libraries
Requires: %{name} = %{version}

%description devel
This is the Simple DirectMedia Layer, a generic API that provides low
level access to audio, keyboard, mouse, and display framebuffer across
multiple platforms.

This is the libraries, include files and other resources you can use
to develop SDL applications.


%prep
%setup -q 

%build
%ifos linux
CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%{prefix} --disable-video-directfb
%else
%configure
%endif
make

%install
rm -rf $RPM_BUILD_ROOT
%ifos linux
make install prefix=$RPM_BUILD_ROOT%{prefix} \
             bindir=$RPM_BUILD_ROOT%{_bindir} \
             libdir=$RPM_BUILD_ROOT%{_libdir} \
             includedir=$RPM_BUILD_ROOT%{_includedir} \
             datadir=$RPM_BUILD_ROOT%{_datadir} \
             mandir=$RPM_BUILD_ROOT%{_mandir}
ln -s libSDL-1.2.so.0 $RPM_BUILD_ROOT%{_libdir}/libSDL-1.1.so.0
%else
%makeinstall
%endif

%clean
rm -rf $RPM_BUILD_ROOT

%files
%{__defattr}
%doc README-SDL.txt COPYING CREDITS BUGS
%{_libdir}/lib*.%{__soext}.*

%files devel
%{__defattr}
%doc README README-SDL.txt COPYING CREDITS BUGS WhatsNew
%doc docs/index.html docs/html
%{_bindir}/*-config
%{_libdir}/lib*.a
%{_libdir}/lib*.la
%{_libdir}/lib*.%{__soext}
%dir %{_includedir}/SDL
%{_includedir}/SDL/*.h
%{_libdir}/pkgconfig/sdl.pc
%{_datadir}/aclocal/*
%{_mandir}/man3/*

%changelog
* Tue May 16 2006 Sam Lantinga <slouken@libsdl.org>
- Removed support for Darwin, due to build problems on ps2linux

* Mon Jan 03 2004 Anders Bjorklund <afb@algonet.se>
- Added support for Darwin, updated spec file

* Wed Jan 19 2000 Sam Lantinga <slouken@libsdl.org>
- Re-integrated spec file into SDL distribution
- 'name' and 'version' come from configure 
- Some of the documentation is devel specific
- Removed SMP support from %build - it doesn't work with libtool anyway

* Tue Jan 18 2000 Hakan Tandogan <hakan@iconsult.com>
- Hacked Mandrake sdl spec to build 1.1

* Sun Dec 19 1999 John Buswell <johnb@mandrakesoft.com>
- Build Release

* Sat Dec 18 1999 John Buswell <johnb@mandrakesoft.com>
- Add symlink for libSDL-1.0.so.0 required by sdlbomber
- Added docs

* Thu Dec 09 1999 Lenny Cartier <lenny@mandrakesoft.com>
- v 1.0.0

* Mon Nov  1 1999 Chmouel Boudjnah <chmouel@mandrakesoft.com>
- First spec file for Mandrake distribution.

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