Vizard 7 » Reference » Appearance & Texturing » Texture appearance and filtering
7.7
To change the texture map appearance of your 3D object, modify it by adding <node3d>.appearance to your script, replacing <node3d> with your 3D object, and one of the following flags:
|
Texture modifier |
Flag |
|
Automatic texture coordinate generation for reflective surfaces. |
viz.TEXGEN |
|
Linear and mipmap filtering for texture magnification and minification. |
viz.TEXMIPMAP |
|
Don't perform any linear or mipmap filtering. |
viz.TEXNEAREST |
|
Force modulation of texture with any scene lights and the surfaces underlying material color properties. |
viz.TEXMODULATE |
|
Display the exact bitmap as the surface texture. |
viz.TEXDECAL |
|
Allow texture coordinates outside [0,1] range. |
viz.TEXREPEAT |
|
Clamp texture coordinates to [0,1] range. |
viz.TEXCLAMP |
Vizard uses OpenGL filtering modes for textures. The filter mode defines how a texture pixel is calculated. There are two filter modes, the minification filter and magnification filter. The minification filter is used when the size of the texture on screen is smaller than the actual texture. The magnification filter is used when the size of the texture on screen is larger than the actual texture. Here is a list of all the possible filter modes:
|
Texture filter flag |
Description |
|
viz.LINEAR |
Use linear interpolation between the 4 nearest texture pixels. (Default for magnification filter). |
|
viz.LINEAR_MIPMAP_LINEAR |
Calculates linear texture pixel value from two nearest mipmaps and linearly interpolates between those two values. (Default for minification filter) (Only available for minification filter). |
|
viz.LINEAR_MIPMAP_NEAREST |
Uses the linearly interpolated texture pixel from the nearest mipmap. (Only available for minification filter). |
|
viz.NEAREST |
Use the nearest texture pixel. |
|
viz.NEAREST_MIPMAP_LINEAR |
Uses the nearest texture pixel from the two nearest mipmaps and linearly interpolates between them. (Only available for minification filter). |
|
viz.NEAREST_MIPMAP_NEAREST |
Uses the nearest texture pixel from the nearest mipmap. (Only available for minification filter). |
Using linear filtering makes the texture look smoother, that is why Vizard uses it as the default. Here is sample code to set the filter mode of a texture to viz.NEAREST:
Appearance & texturing command table