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→CLUT (color lookup table)
== CLUT (color lookup table) ==
The CLUT starts with a simple 32-bit word telling the length, in bytes, of the entire CLUT block (including the header). Following that is a set of four 16-bit values telling how the CLUT data should be loaded into the frame buffer. These measurements are in frame buffer pixels, which are 16-bit. Each CLUT is stored in a rectangular portion of the frame buffer, which is typically 16 or 256 pixels wide (corresponding to 4-bit or 8-bit color indices). The rows define one or more 'palettes' which can be selected at runtime to use when drawing a color-indexed image.
<br/><center>[[Image:PSX_TIM_file_clut.png]]</center><br/>
In the frame buffer, CLUTs need to be stored on even multiples of 16 horizontally, but can be stored freely on any row. Typically they are stored directly under the front/back buffers.
== Image data ==
