Hi Brad, On Thu, Apr 15, 2010 at 7:37 PM, Brad Huber <[email protected]> wrote: > As I recall OSG designers (Robert) have pushed to keep GPU based blacklist > features out of OSG.
Actually the OSG already support disabling of extensions, see include/osg/GLExtensions: /** Set a list of extensions to disable for different OpenGL renderers. This allows * OSG applications to work around OpenGL drivers' bugs which are due to problematic extension support. * The format of the string is: * "GLRendererString : ExtensionName, ExtensionName; GLRenderString2 : ExtensionName;" * An example of is : "SUN_XVR1000:GL_EXT_texture_filter_anisotropic" * The default setting of GLExtensionDisableString is obtained from the OSG_GL_EXTENSION_DISABLE * environmental variable. */ extern OSG_EXPORT void setGLExtensionDisableString(const std::string& disableString); This won't disable core features that the driver says it support, but it will enable you disable many of the extensions that can be problematic. As to what extensions are problematic is really up to the individual develop to decide for their app based on testing against the target hardware they have. Since the driver situation can change on a daily basis the OSG itself doesn't generally attempt to codify what works or doesn't work. I'd also recommend not codifying too much into your app either, using the above env var, or a your own application specific file on disk that can be used to help set the ExtensionDisableString and help you decide which OpenGL/scene graph features to use at runtime. This way you can alter the file/env var as you encounter different drivers/hardware/problems. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
