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Difference between revisions of "AGI/Specifications/Other"
AGI/Specifications/Other (view source)
Revision as of 15:56, 21 February 2008
, 15:56, 21 February 2008Added comment about the colors being 18-bit rather than 24-bit in AGIPAL and the order in which the color components are saved in the AGIPAL file.
(Added link to information about the default VGA palette to AGI256-2's external links.) |
(Added comment about the colors being 18-bit rather than 24-bit in AGIPAL and the order in which the color components are saved in the AGIPAL file.) |
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There are always eight 24-byte chunks, so the file is always 192 bytes. | There are always eight 24-byte chunks, so the file is always 192 bytes. | ||
<pre> | <pre> | ||
Chunk0 Holds RGB palette data for the first 8 colors | Chunk0 Holds RGB palette data for the first 8 colors (R0, G0, B0, R1, G1, B1, R2, G2, B2, ...) | ||
Chunk1 Same as Chunk0 | Chunk1 Same as Chunk0 | ||
Chunk2 Holds RGB palette data for the second 8 colors | Chunk2 Holds RGB palette data for the second 8 colors (R8, G8, B8, R9, G9, B9, R10, G10, B10, ...) | ||
Chunk3 Same as Chunk2 | Chunk3 Same as Chunk2 | ||
Chunk4-Chunk7 Same as Chunk0-Chunk3 | Chunk4-Chunk7 Same as Chunk0-Chunk3 | ||
</pre> | </pre> | ||
Because VGA used 18-bit colors (i.e. 6 bits per color component) only the lowest 6 bits of each color component are actually used | |||
(i.e. the topmost two bits of each color component byte are simply discarded). | |||
==AGI256== | ==AGI256== | ||