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ReC98/th05/formats/pi.h

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[Maintenance] Clean up PI function declarations and comments
2019-12-15 19:17:00 +00:00
#include "th03/formats/pi.h"
int pascal pi_slot_free(int slot);
[Reverse-engineering] [th05] Masked PI display As used for the title screen fade-in effect. Another function that apparently was deliberately written to run not that fast, by blitting each row individually to the 400th VRAM row just so that it can then turn on the EGC, perform the *actual* masked blit to the VRAM destination, and then turn the EGC off before moving to the next now. The same effect could have entirely been accomplished by copying graph_pack_put_8() and applying the mask there; it's not like ZUN didn't know how to modify master.lib… (See also 44ad3eb4) --Nmlgc
2019-12-10 07:52:24 +00:00
// Like pi_slot_put() and pi_slot_put_quarter(), but applying the mask with
// the given ID while blitting.
[Maintenance] Declare distinct types for screen, VRAM, and TRAM coordinates Whew, time to look at every `int` variable we ever declared! The best moment to do this would have been a year ago, but well, better late than never. No need to communicate that in comments anymore. These shouldn't be used for widths, heights, or sprite-space coordinates. Maybe we'll cover that another time, this commit is already large enough. Part of P0111, funded by [Anonymous] and Blue Bolt.
2020-08-20 19:59:45 +00:00
int pascal pi_slot_put_mask(
screen_x_t left, vram_y_t top, int slot, int mask_id
);
[Reverse-engineering] [th05] Masked PI display As used for the title screen fade-in effect. Another function that apparently was deliberately written to run not that fast, by blitting each row individually to the 400th VRAM row just so that it can then turn on the EGC, perform the *actual* masked blit to the VRAM destination, and then turn the EGC off before moving to the next now. The same effect could have entirely been accomplished by copying graph_pack_put_8() and applying the mask there; it's not like ZUN didn't know how to modify master.lib… (See also 44ad3eb4) --Nmlgc
2019-12-10 07:52:24 +00:00
int pascal pi_slot_put_quarter_mask(
[Maintenance] Declare distinct types for screen, VRAM, and TRAM coordinates Whew, time to look at every `int` variable we ever declared! The best moment to do this would have been a year ago, but well, better late than never. No need to communicate that in comments anymore. These shouldn't be used for widths, heights, or sprite-space coordinates. Maybe we'll cover that another time, this commit is already large enough. Part of P0111, funded by [Anonymous] and Blue Bolt.
2020-08-20 19:59:45 +00:00
screen_x_t left, vram_y_t top, int slot, int quarter, int mask_id
[Reverse-engineering] [th05] Masked PI display As used for the title screen fade-in effect. Another function that apparently was deliberately written to run not that fast, by blitting each row individually to the 400th VRAM row just so that it can then turn on the EGC, perform the *actual* masked blit to the VRAM destination, and then turn the EGC off before moving to the next now. The same effect could have entirely been accomplished by copying graph_pack_put_8() and applying the mask there; it's not like ZUN didn't know how to modify master.lib… (See also 44ad3eb4) --Nmlgc
2019-12-10 07:52:24 +00:00
);