Hi Jean-Claude, Though I don't use osgOcean, I can help you on this.
On Sep 7, 2010, at 1:50 AM, Jean-Claude Monnin wrote: > When I run "oceanExample", I get following errors: > > VERTEX glCompileShader "ocean_surface_vertex_shader" FAILED > VERTEX Shader "ocean_surface_vertex_shader" infolog: > ERROR: 0:50: 'gl_' : reserved built-in name > > FRAGMENT glCompileShader "ocean_surface_fragment_shader" FAILED > FRAGMENT Shader "ocean_surface_fragment_shader" infolog: > ERROR: 0:60: '/' : wrong operand types no operation '/' exists that > takes a left-hand operand of type 'const float' and a right operand of type > 'const int' (or there is no acceptable conversion) > ERROR: 0:214: 'pow' : no matching overloaded function found > ERROR: 0:214: '=' : cannot convert from 'const float' to '2-component > vector of float' > > glLinkProgram "ocean_surface" FAILED The errors above have something to do with nVidia's problem on implicit cast from integer to float. Somehow some of nVidia drivers omit the cast part and then try to pass an integer parameter to a function (like pow) that requires a float parameter, and thus you get wrong operand types, no matching overloaded function, or undefined symbol. A solution for this is to replace integer constants (like 1, 2, 3, ...) with explicit float ones (e.g. 1.0, 2.0, 3.0, ...) in shader source code. This can be a mac specific issue but it is safer to use float constants in shader code unless integer constant is clearly needed. > As long as I don't disable all the options that use a FBO, I get garbage on > the screen. > Is anybody using osgOcean successfully on MacOSX. Is the graphics card too > old for osgOcean? If the graphics card should be capable of running it, any > hints on how to fix it are welcome. GT7300 driver on Mac OS X has a problem in hardware mipmapping. So you need to disable it by applying my patch to Texture.cpp. The patch is available at: http://macflightgear.svn.sourceforge.net/viewvc/macflightgear/trunk/patches/OSG-2.9.8.diff?revision=279&view=markup # This patch (for Texture.cpp) was once rejected since this hack is too drive specific bug-fix. Best, Tat _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
