<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"><div><br><blockquote type="cite">but before it worked i had to comment out line 173-176 in glsl_geometry.ccp<br></blockquote><blockquote type="cite">got the error "cannot load shader now" didnīt really understand why<br></blockquote><br>because you tried to load the shader when no openGL context existed, and glew was not yet initialized. loading of shaders is deferred till rendering really starts, so it probably shouldn't bail out as an error.</div></blockquote><font class="Apple-style-span" color="#000000">in this case i get "</font><font class="Apple-style-span" color="#000000">cannot load shader now! deferring till later..." and when the rendering starts the shader worked</font><blockquote type="cite"><div><br>however, initialized glew is crucial for shaders, as we don't know whether the system actually supports openGL-2.0 (or 2.1 for geom-shaders) without it.<br>just uncommenting the checks is a bad idea, if you want to not have crashes on the majority of gfx-cards out there...</div></blockquote>did another try <span class="Apple-style-span" style="font-family: Monaco; font-size: 10px; ">!GLEW_VERSION_2_0 && !GLEW_ARB_geometry_shader4<span class="Apple-style-span" style="font-family: Helvetica; font-size: 12px; "> work ŋ? GLEW_VERSION_3_0 gives also the error</span></span></div><div><div>GemWindow Activate err = 0</div><div>GEM: GLEW version 1.5.1</div><div>GEM: Start rendering</div></div><div>on mac osx 10.5.6</div><div><br></div><div>Matthias</div></body></html>