~4Dgifts/toolbox/src/exampleCode/GLX/texvol README Volume Rendering using 2D and 3D textures texvol does volume rendering using 2d or 3d textures. On machines, which do not have 3d texturing capability, you can run the program using 2d texture mode. To run the program in 2d texture mode type texvol or texvol -tex 2 and for 3d textures: texvol -tex 3 Depending upon the hardware the performance will vary. For example, on an Indigo where texturing is done without hardware assist, the performance will be low. One can use the "degenerate option" to move the model on such machines. The data is 128 x 128 x 64 slices of 8 bit values. LEFTMOUSE : X and Y rotation MIDDLEMOUSE : Zoom LEFT & MIDDLE -MOUSE: Z rotation (order of click important) MIDDLE & LEFT -MOUSE: Panning (order of click important) UP & DOWN ARROW Keys: Move active clipping plane For trackball motion, press SHIFT key and then click LEFTMOUSE for rotation. In Low Res Mode, use LEFT and RIGHT ARROWS to control resolution. In Depth Cue Mode, use LEFT and RIGHT ARROWS to control fog density. -- Yusuf Attarwala (SGI-Applications)
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