8573194aa0
nvidia 6 months ago and the issue is still "in progress". I've given up waiting for them! Platform - various Intel Windows XP SP2 PCs with various nvidia cards including GeForce 8800 GTS and Quadro FX 4500, and various driver versions including the latest WHQL 175.16. I investigated your concerns about glGenerateMipmapEXT being slower than GL_GENERATE_MIPMAP_SGIS, and for power-of-two textures, to my surprise it is. For a 512*512 texture, glGenerateMipmapEXT takes on average 10ms, while GL_GENERATE_MIPMAP_SGIS takes on average 6ms. Therefore I have modified the code to only use glGenerateMipmapEXT if the texture has a non-power-of-two width or height. I am resubmitting all the files previously submitted (only "Texture.cpp" has significant changes since my previous submission, I've also replaced tabs with spaces in "Texture"). "
Welcome to the OpenSceneGraph (OSG).
For up-to-date information on the project, in-depth details on how to
compile and run libraries and examples, see the documentation on the
OpenSceneGraph website:
http://www.openscenegraph.org
For the impatient, read the simplified build notes below. For support
subscribe to our public mailing list:
http://www.openscenegraph.org/projects/osg/wiki/MailingLists
Robert Osfield.
Project Lead.
25th April 2008.
--
How to build the OpenSceneGraph
===============================
The OpenSceneGraph uses the CMake build system to generate a
platform-specific build environment. CMake reads the CMakeLists.txt
files that you'll find throughout the OpenSceneGraph directories,
checks for installed dependenciesand then generates the appropriate
build system.
If you don't already have CMake installed on your system you can grab
it from http://www.cmake.org, use version 2.4.6 or later. Details on the
OpenSceneGraph's CMake build can be found at:
http://www.openscenegraph.org/projects/osg/wiki/Build/CMake
Under unices (i.e. Linux, IRIX, Solaris, Free-BSD, HP-Ux, AIX, OSX)
use the cmake or ccmake command-line utils, or use the included tiny
configure script that'll run cmake for you. The configure script
simply runs 'cmake . -DCMAKE_BUILD_TYPE=Release' to ensure that you
get the best performance from your final libraries/applications.
cd OpenSceneGraph
./configure
make
sudo make install
Alternatively, you can create an out-of-source build directory and run
cmake or ccmake from there. The advantage to this approach is that the
temporary files created by CMake won't clutter the OpenSceneGraph
source directory, and also makes it possible to have multiple
independent build targets by creating multiple build directories. In a
directory alongside the OpenSceneGraph use:
mkdir build
cd build
cmake ../OpenSceneGraph -DCMAKE_BUILD_TYPE=Release
make
sudo make install
Under Windows use the GUI tool CMakeSetup to build your VisualStudio
files. The following page on our wiki dedicated to the CMake build
system should help guide you through the process:
http://www.openscenegraph.org/projects/osg/wiki/Support/PlatformSpecifics/VisualStudio
Under OSX you can either use the CMake build system above, or use the
Xcode projects that you will find in the OpenSceneGraph/Xcode
directory.
For further details on compilation, installation and platform-specific
information read "Getting Started" guide:
http://www.openscenegraph.org/projects/osg/wiki/Support/GettingStarted