MATLAB Function Reference (Volume 2: Graphics)

Figure PropertiesThere is also a Silicon Graphics version of OpenGL for Windows 95 that isavailable at the URL:http://www.sgi.comTested Hardware VersionsOn MS-Windows platforms, there are many graphics boards that accelerateOpenGL. The MathWorks has tested MATLAB on the AccelECLIPSE boardfrom AccelGraphics.On UNIX platforms, The MathWorks has tested MATLAB on Sparc Ultra withthe Creator 3D board and Silicon Graphics computers running IRIX 6.4 ornewer.Determining What Version You Are UsingTo determine the version and vendor of the OpenGL library that MATLAB isusing on your system, type the following command at the MATLAB prompt.feature GetOpenGLInfoThis command also returns a string of extensions to the OpenGL specificationthat are available with the particular library MATLAB is using. Thisinformation is helpful to The MathWorks, so please include this information ifyou need to report bugs.OpenGL vs. Other MATLAB RenderersThere are some difference between drawings created with OpenGL and thosecreated with the other renderers. The OpenGL specific differences include:• OpenGL does not do colormap interpolation. If you create a surface or patchusing indexed color and interpolated face or edge coloring, OpenGL willinterpolate the colors through the RGB color cube instead of through thecolormap.• OpenGL does not support the phong value for the FaceLighting andEdgeLighting properties of surfaces and patches.MATLAB issues a warning if you request nonsupported behavior.2-183