Truevision TGA Save Options

 

These options determine how PMView saves TGA files.

 

Use Run Length Encoding (RLE) If set, PMView will run length encode the image data. Note that this usually only is suitable for images with large areas of the same color.

 

Store from Bottom to Top (Flip) If set, PMView will store the TGA file starting with the bottom line. You may need this if the target application don't use the orientation information in the TGA file header and displays the image upside down. For general compatibility, leave this option off.

 

Store from Right to Left (Mirror) If set, PMView will store lines in the TGA file from right to left. You may need this if the target application don't use the orientation information in the TGA file header and displays a mirror image. For general compatibility, leave this option off.

 

Interlace Type This will select the interlace type, i.e. the ordering of image data in the file. Interlacing will only make sense with programs that progressively update the display while loading. For instance, when loading a4-pass interlaced file each fourth row will be displayed during four passes. At the end of the first pass each fourth row of the image is visible. Already at this point of loading you'll probably see what the image looks like. With each pass the image quality will gradually improve as missing lines are added. Interlacing does not increase file size. Note: Many programs that read TGA files ignore the interlace option bits and incorrectly display the image as two or four compressed images stacked one after the other. Don't use interlacing unless you know that the target application is able to use it.

 

No Interlace (1-pass) The image will not be interlaced.

Each Second Row (2-pass) The image will be interlaced in two passes.

Each Fourth Row (4-pass) The image will be interlaced in four passes.

 

Related information:

The Truevision Targa Format