OBD:TXMP: Difference between revisions

OBD:TXMP (view source)

Revision as of 09:48, 14 November 2022

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 TXMP is the only known instance type that is interpreted differently by the three kinds of Oni engines on the three plaftorms (Windows, Mac and PS2).
-The difference between "PC" (Windows retail) and "Mac" (Windows demo and Mac proper) is minor, even though the checksums are different, and can One stores pixel data in the .raw file, and the other in a .sep file. Apart from that the data format is common (even though the template checksums are different), and is described in the first section below.
+The difference between "PC" (Windows retail) and "Mac" (Windows demo and Mac proper) is minor, at least from the point of view of disk storage (the structural difference is limited to runtime fields grouped at the end of the instance, which is why they haven't been documented or implemented in OniSplit). A more obvious difference is that "PC" TXMPs store their pixel data in the .raw file, and "Mac" TXMPs use the .sep file, but this merely amounts to using different fields within the same structure. Thus, even though the template checksums for "Mac" and "PC" are different, both formats can easily be described in common.
-The PS2 implementation is significantly different from the other two. It is
+The PS2 implementation is significantly different from the other two, in that it systematically uses indexed colors: instead of color being stored in the pixel data itself, each pixel is merely an 8-bit index into a 256-color palette (palettes are stored per-level, in files named level0_palette.pal etc). This difference is detailed in a separate section at the bottom of the page.
 ==Windows and Mac TXMP==