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ReC98/th04/hardware/bgimage.hpp

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[Reverse-engineering] [th04/th05] Music Room / ending background image buffers "bgimage" really was the best name I could come up with here, given what it's used for. Everything else sounded way too ambiguous. Even something like "mempage", in the meaning of "a third memory-backed graphics page"… --Nmlgc
2019-12-08 12:09:13 +00:00
// Additional 640×400 4-plane background image buffer.
[Maintenance] Move the number of VRAM planes to pc98.h Allowing us to consistently mirror the declaration in pc98.inc without adding a planar.inc file. 😛 And points us to two more dots8_t* arrays that should have used the Planar<> template. Part of P0135, funded by [Anonymous].
2021-02-24 13:24:58 +00:00
extern Planar<dots8_t __seg *> bgimage;
[Reverse-engineering] [th04/th05] Music Room / ending background image buffers "bgimage" really was the best name I could come up with here, given what it's used for. Everything else sounded way too ambiguous. Even something like "mempage", in the meaning of "a third memory-backed graphics page"… --Nmlgc
2019-12-08 12:09:13 +00:00
[Decompilation] [th04/th05] bgimage_snap(), bgimage_put(), bgimage_free() Eh, REP MOVSD is used too inconsistently across the games to justify replacing these macros with an `inline` function. Still can use a custom one here to make the register usage a bit more explicit, though. Part of P0136, funded by [Anonymous].
2021-03-10 21:13:50 +00:00
void bgimage_snap(void);
// Blits garbage data if bgimage_snap() wasn't called before.
void bgimage_put(void);
void bgimage_free(void);
[Naming] [th04/th05] bgimage_put_rect(): Annotate the 16-pixel alignment This will later become relevant in a piece of ZUN bloat. Part of P0264, funded by [Anonymous] and Blue Bolt.
2024-01-31 01:06:19 +00:00
[Reverse-engineering] [th04/th05] Music Room / ending background image buffers "bgimage" really was the best name I could come up with here, given what it's used for. Everything else sounded way too ambiguous. Even something like "mempage", in the meaning of "a third memory-backed graphics page"… --Nmlgc
2019-12-08 12:09:13 +00:00
// Blits the rectangle from (⌊x/16⌋*16, y) to (⌈((x + w)/16)*16⌉, (y + h))
[Maintenance] Proofread all comments in C land
2020-06-18 18:01:29 +00:00
// on the [bgimage] to the same position in VRAM.
[Naming] [th04/th05] bgimage_put_rect(): Annotate the 16-pixel alignment This will later become relevant in a piece of ZUN bloat. Part of P0264, funded by [Anonymous] and Blue Bolt.
2024-01-31 01:06:19 +00:00
void pascal bgimage_put_rect_16(
[Maintenance] Declare distinct types for pixel and VRAM sizes Oh wait, we also need one of those for an upcoming structure! Part of P0111, funded by [Anonymous] and Blue Bolt.
2020-08-21 18:13:08 +00:00
screen_x_t left, screen_y_t top, pixel_t w, pixel_t h
);