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Difference between revisions of "AGI/Specifications/Other/AGI256/Implementation Details"
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AGI/Specifications/Other/AGI256/Implementation Details (view source)
Revision as of 23:55, 16 July 2007
, 23:55, 16 July 2007Added info on cel blitting modification and loading 256-color picture resources.
(Added reverse engineered C version of AGIOBJS.OVL.) |
(Added info on cel blitting modification and loading 256-color picture resources.) |
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| Line 7: | Line 7: | ||
data is held in the right 160x200 half of the buffer and the original style 16-color and | data is held in the right 160x200 half of the buffer and the original style 16-color and | ||
priority/control line information is held in the left 160x200 half of the buffer. | priority/control line information is held in the left 160x200 half of the buffer. | ||
When loading 256-color picture resource with the unknown170 command | |||
the picture is loaded straight into the right 160x168 half of the 320x168 memory buffer. | |||
Cel blitting routine is modified so that when sprite data would normally be written | |||
to a position (x, y) in the 16-color buffer (i.e. the left 160x168 half) it's actually | |||
written to the same position (x, y) but in the 256-color buffer (i.e. the right 160x168 half). | |||
==Used external info== | ==Used external info== | ||