Renderer Settings

Allows you to select a rendering mode. To draw the 3D image, Cortona Movie Maker uses Cortona VRML client that in turn provides two hardware renderers: OpenGL and DirectX. If your system has hardware acceleration for either OpenGL or Direct3D (note: you must have DirectX 5 or greater installed), choose the appropriate renderer. Using hardware renderers can introduce limitations. Select a renderer to compare the performance and visual quality of hardware versus software rendering and set your preferences accordingly.

• Renderer options



• Dither colors if needed
  Controls whether Cortona dithers while rendering. Dithering improves the quality of rendering but may lower performance.


• Motion blur effect
  Apply a motion blur effect. This actually makes an image seem a little blurred in motion.



• Wireframe rendering mode
  The object appears to be outlined with wires rather than a solid.



• Anti-aliasing
  The technique for smoothing out jaggies in showing curves on a computer monitor. There are two different modes: Idle-time and Real-time. If the Idle-time option is on, it is only applied for a static scene. But selecting Real-time initiates smoothing, even in the viewer movement, but results in a decreasing frame rate.


• Do not render textures
  To turn the textures on or off.



• Limit textures size
  All textures are optimized for speed.



• Optimize texture for quality
  All textures are optimized for quality. Note that if you select both Optimize texture for speed and quality the renderer uses the available resources to optimize speed and quality simultaneously.



• Use textures mip-mapping
  When the scene contains acutely angled polygons that disappear into the distance, it mixes low and high-resolution versions of the same texture to reduce the jagged effect.



• Advanced alpha blending
  Alpha blending is the name for the alpha channel control and it's used to simulate effects such as placing a piece of glass in front of an object so that the object is completely visible behind the glass or unseen, or something in between. Advanced alpha blending turns a particular rendering method on for better quality of translucent faces. The processor should support MMX additional instructions.



• Automatic level of detail
  Automatically reduces the number of polygons which are displayed for any object at large distances (tiny objects on computer screen) from the viewer.



• Extended Z-buffer
  If the check box is selected this sets the 32-bit Z-buffer for the software renderer (R98). The default is 16-bit.



• Phong lighting model
  A particular method for computing the apparent color of a face at a particular point. It improves the quality of lighting but lowers performance. Note that this option is available only for R98 Renderer in the Intel Pentium III optimization mode.


• Realistic fog.
  A method for computing the color for every pixel in the frame buffer to simulate fog. It improves the quality but lowers performance.



• Optimization
  Turns the optimization rendering mode on or off, if possible.



• Renderer version
  This is accessible only for Direct3D renderers. Allows you to select a Revanche DX5 rendering mode in the case you have DirectX 7 or a later version installed.