OpenGL

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Properties Standard Tools	Tools Options

The OpenGL options manage display options for OpenGL accelerator graphics cards.

Implementation settings

Use texture compression

Images are compressed as they are stored in memory. When the image is used, it is decompressed. Since the compression is lossy, the results can sometimes appear degraded over the original. Textures can compress up to a 4-to-1 ratio, freeing up video memory.

Appearance settings

Antialiasing

Mip map filtering

Mip-map filtering improves the quality of textures based on distance or space occupied. Mip maps are generated when the texture image is first loaded, and the number of maps created depends on the original image size. For example: If you load a 1024x1024 image, Rhino will create similar, sampled images based on the original in the following resolutions: 512x512, 256x256, 128x128, 64x64, 32x32, 16x16, 8x8, 4x4, 2x2, 1x1 (single pixel). Based on size and distance, textures are chosen from the collection of textures to result in smoother, less grainy images and to moiré patterns.

Anisotropic filtering

Anisotropic filtering improves the clarity and crispness of textured objects, and enhances the image quality for textures viewed at low angles relative to the camera.