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ReC98/th03/formats/mrs.hpp

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[Reverse-engineering] [th03] .MRS: Bitplane pointers Part of P0126, funded by [Anonymous] and Blue Bolt.
2020-11-06 14:25:02 +00:00
/// Headerless, uncompressed 16-color + alpha, upside-down 288×184 image format
/// ---------------------------------------------------------------------------
/// .CDG was apparently not good enough? Used for gauge attack portraits and
/// bomb backgrounds.
static const int MRS_SLOT_COUNT = 8;
static const pixel_t MRS_W = 288;
static const pixel_t MRS_H = 184;
[Decompilation] [th03] .MRS: Persistent horizontal flipping Another function consisting almost entirely of inline ASM. Still worth it though, if only to save us from duplicating any declarations in ASM land. Part of P0126, funded by [Anonymous] and Blue Bolt.
2020-11-07 19:12:04 +00:00
[Decompilation] [th03] .MRS: Slot freeing function How can you mess up *a freeing function* that badly?! In your third game?! Part of P0127, funded by [Anonymous].
2020-11-10 13:23:04 +00:00
// Frees the .MRS image in the given [slot].
void pascal mrs_free(int slot);
[Decompilation] [th03] .MRS: Alpha-tested byte-aligned blitting And since inlining even removes longer if-else chains if they branch depending on a literal constant, we can use a regular parameter to select either MOV or OR in our _FS and _GS poke() template functions, without needing to duplicate them! Part of P0127, funded by [Anonymous].
2020-11-09 14:34:53 +00:00
// Displays the .MRS image in the given [slot] at (⌊left/8⌋*8, top).
void pascal mrs_put_8(screen_x_t left, uscreen_y_t top, int slot);
[Decompilation] [th03] .MRS: Byte-aligned, opaque blitting Containing not one, but two decompilation innovations, one of which works around a compiler bug using C++ template functions… Completes P0126, funded by [Anonymous] and Blue Bolt.
2020-11-08 20:04:36 +00:00
// Displays the .MRS image in the given [slot] at (⌊left/8⌋*8, top),
// disregarding its alpha plane, and optionally altering its colors slightly.
void pascal mrs_put_noalpha_8(
screen_x_t left, uscreen_y_t top, int slot, bool altered_colors
);
[Decompilation] [th03] .MRS: Persistent horizontal flipping Another function consisting almost entirely of inline ASM. Still worth it though, if only to save us from duplicating any declarations in ASM land. Part of P0126, funded by [Anonymous] and Blue Bolt.
2020-11-07 19:12:04 +00:00
// Persistently flips the image in [slot] horizontally, using the [hflip_lut].
void pascal mrs_hflip(int slot);
[Reverse-engineering] [th03] .MRS: Bitplane pointers Part of P0126, funded by [Anonymous] and Blue Bolt.
2020-11-06 14:25:02 +00:00
/// ---------------------------------------------------------------------------