oambuf.h

Go to the documentation of this file.

#ifndef ALCHEMY_OAMBUF_H
#define ALCHEMY_OAMBUF_H
 
/// @file
/// OamShadow, a sprite entry a routine builds by hand and DMA copies to OAM.
 
#include "types.h"
 
/// OAM buffer: sprite entries a routine builds by hand and DMA copies to OAM.
/// One manually assembled OAM entry, copied directly to OAM by DMA.
/// （LuckyDice_Run、ReelGame_RunFrame、Title_UpdateIntroSprites）
/* FAKEMATCH: the OAM shadow words are volatile, the form the bytes prove in all
 * three lists: loop.c forms no DEST_ADDR givs for volatile stores, so every
 * loop over a list keeps its offset givs. Without the qualifier LuckyDice_Run
 * (lucky_dice.c) differs 1702; ReelGame_RunFrame (colorfx.c) differs 119
 * without attr01's (1730 instructions for 1729) and 1558 without attr2's (1701
 * for 1729); Title_UpdateIntroSprites (intro.c) differs 205 (471 for 496). */
struct OamShadow {
  volatile u32 attr01; ///< attr0 | attr1 << 16
  volatile u32 attr2;  ///< attr2 | affine value << 16
};
 
#endif