mirror of
https://github.com/Ninjdai1/pokeemerald.git
synced 2024-09-29 01:04:28 +02:00
7dc95a0103
This commit undoes most of PokeCodec's PRs after the debate in chat. Some harmless or completely superseded PRs have been left alone, as there is not much benefit in attempting to undo them. Reverts #1104, #1108, #1115, #1118, #1119, #1124, #1126, #1127, #1132, #1136, #1137, #1139, #1140, #1144, #1148, #1149, #1150, #1153, #1155, #1177, #1179, #1180, #1181, #1182 and #1183.
1257 lines
30 KiB
C
1257 lines
30 KiB
C
#include <limits.h>
|
|
#include "global.h"
|
|
#include "bg.h"
|
|
#include "dma3.h"
|
|
#include "gpu_regs.h"
|
|
|
|
#define DISPCNT_ALL_BG_AND_MODE_BITS (DISPCNT_BG_ALL_ON | 0x7)
|
|
|
|
struct BgControl
|
|
{
|
|
struct BgConfig {
|
|
u16 visible:1;
|
|
u16 unknown_1:1;
|
|
u16 screenSize:2;
|
|
u16 priority:2;
|
|
u16 mosaic:1;
|
|
u16 wraparound:1;
|
|
|
|
u16 charBaseIndex:2;
|
|
u16 mapBaseIndex:5;
|
|
u16 paletteMode:1;
|
|
|
|
u8 unknown_2;
|
|
u8 unknown_3;
|
|
} configs[4];
|
|
|
|
u16 bgVisibilityAndMode;
|
|
};
|
|
|
|
struct BgConfig2
|
|
{
|
|
u32 baseTile:10;
|
|
u32 basePalette:4;
|
|
u32 unk_3:18;
|
|
|
|
void* tilemap;
|
|
s32 bg_x;
|
|
s32 bg_y;
|
|
};
|
|
|
|
static struct BgControl sGpuBgConfigs;
|
|
static struct BgConfig2 sGpuBgConfigs2[4];
|
|
static u32 sDmaBusyBitfield[4];
|
|
|
|
u32 gUnneededFireRedVariable;
|
|
|
|
static const struct BgConfig sZeroedBgControlStruct = { 0 };
|
|
|
|
void ResetBgs(void)
|
|
{
|
|
ResetBgControlStructs();
|
|
sGpuBgConfigs.bgVisibilityAndMode = 0;
|
|
SetTextModeAndHideBgs();
|
|
}
|
|
|
|
static void SetBgModeInternal(u8 bgMode)
|
|
{
|
|
sGpuBgConfigs.bgVisibilityAndMode &= 0xFFF8;
|
|
sGpuBgConfigs.bgVisibilityAndMode |= bgMode;
|
|
}
|
|
|
|
u8 GetBgMode(void)
|
|
{
|
|
return sGpuBgConfigs.bgVisibilityAndMode & 0x7;
|
|
}
|
|
|
|
void ResetBgControlStructs(void)
|
|
{
|
|
struct BgConfig* bgConfigs = &sGpuBgConfigs.configs[0];
|
|
struct BgConfig zeroedConfig = sZeroedBgControlStruct;
|
|
int i;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
bgConfigs[i] = zeroedConfig;
|
|
}
|
|
}
|
|
|
|
void Unused_ResetBgControlStruct(u8 bg)
|
|
{
|
|
if (!IsInvalidBg(bg))
|
|
{
|
|
sGpuBgConfigs.configs[bg] = sZeroedBgControlStruct;
|
|
}
|
|
}
|
|
|
|
enum
|
|
{
|
|
BG_CTRL_ATTR_VISIBLE = 1,
|
|
BG_CTRL_ATTR_CHARBASEINDEX = 2,
|
|
BG_CTRL_ATTR_MAPBASEINDEX = 3,
|
|
BG_CTRL_ATTR_SCREENSIZE = 4,
|
|
BG_CTRL_ATTR_PALETTEMODE = 5,
|
|
BG_CTRL_ATTR_PRIORITY = 6,
|
|
BG_CTRL_ATTR_MOSAIC = 7,
|
|
BG_CTRL_ATTR_WRAPAROUND = 8,
|
|
};
|
|
|
|
static void SetBgControlAttributes(u8 bg, u8 charBaseIndex, u8 mapBaseIndex, u8 screenSize, u8 paletteMode, u8 priority, u8 mosaic, u8 wraparound)
|
|
{
|
|
if (!IsInvalidBg(bg))
|
|
{
|
|
if (charBaseIndex != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].charBaseIndex = charBaseIndex & 0x3;
|
|
}
|
|
|
|
if (mapBaseIndex != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].mapBaseIndex = mapBaseIndex & 0x1F;
|
|
}
|
|
|
|
if (screenSize != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].screenSize = screenSize & 0x3;
|
|
}
|
|
|
|
if (paletteMode != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].paletteMode = paletteMode;
|
|
}
|
|
|
|
if (priority != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].priority = priority & 0x3;
|
|
}
|
|
|
|
if (mosaic != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].mosaic = mosaic & 0x1;
|
|
}
|
|
|
|
if (wraparound != 0xFF)
|
|
{
|
|
sGpuBgConfigs.configs[bg].wraparound = wraparound;
|
|
}
|
|
|
|
sGpuBgConfigs.configs[bg].unknown_2 = 0;
|
|
sGpuBgConfigs.configs[bg].unknown_3 = 0;
|
|
|
|
sGpuBgConfigs.configs[bg].visible = 1;
|
|
}
|
|
}
|
|
|
|
static u16 GetBgControlAttribute(u8 bg, u8 attributeId)
|
|
{
|
|
if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
|
|
{
|
|
switch (attributeId)
|
|
{
|
|
case BG_CTRL_ATTR_VISIBLE:
|
|
return sGpuBgConfigs.configs[bg].visible;
|
|
case BG_CTRL_ATTR_CHARBASEINDEX:
|
|
return sGpuBgConfigs.configs[bg].charBaseIndex;
|
|
case BG_CTRL_ATTR_MAPBASEINDEX:
|
|
return sGpuBgConfigs.configs[bg].mapBaseIndex;
|
|
case BG_CTRL_ATTR_SCREENSIZE:
|
|
return sGpuBgConfigs.configs[bg].screenSize;
|
|
case BG_CTRL_ATTR_PALETTEMODE:
|
|
return sGpuBgConfigs.configs[bg].paletteMode;
|
|
case BG_CTRL_ATTR_PRIORITY:
|
|
return sGpuBgConfigs.configs[bg].priority;
|
|
case BG_CTRL_ATTR_MOSAIC:
|
|
return sGpuBgConfigs.configs[bg].mosaic;
|
|
case BG_CTRL_ATTR_WRAPAROUND:
|
|
return sGpuBgConfigs.configs[bg].wraparound;
|
|
}
|
|
}
|
|
|
|
return 0xFF;
|
|
}
|
|
|
|
u8 LoadBgVram(u8 bg, const void *src, u16 size, u16 destOffset, u8 mode)
|
|
{
|
|
u16 offset;
|
|
s8 cursor;
|
|
|
|
if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
|
|
{
|
|
switch (mode)
|
|
{
|
|
case 0x1:
|
|
offset = sGpuBgConfigs.configs[bg].charBaseIndex * BG_CHAR_SIZE;
|
|
break;
|
|
case 0x2:
|
|
offset = sGpuBgConfigs.configs[bg].mapBaseIndex * BG_SCREEN_SIZE;
|
|
break;
|
|
default:
|
|
cursor = -1;
|
|
goto end;
|
|
}
|
|
|
|
offset = destOffset + offset;
|
|
|
|
cursor = RequestDma3Copy(src, (void*)(offset + BG_VRAM), size, 0);
|
|
|
|
if (cursor == -1)
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
end:
|
|
return cursor;
|
|
}
|
|
|
|
static void ShowBgInternal(u8 bg)
|
|
{
|
|
u16 value;
|
|
if (!IsInvalidBg(bg) && sGpuBgConfigs.configs[bg].visible)
|
|
{
|
|
value = sGpuBgConfigs.configs[bg].priority |
|
|
(sGpuBgConfigs.configs[bg].charBaseIndex << 2) |
|
|
(sGpuBgConfigs.configs[bg].mosaic << 6) |
|
|
(sGpuBgConfigs.configs[bg].paletteMode << 7) |
|
|
(sGpuBgConfigs.configs[bg].mapBaseIndex << 8) |
|
|
(sGpuBgConfigs.configs[bg].wraparound << 13) |
|
|
(sGpuBgConfigs.configs[bg].screenSize << 14);
|
|
|
|
SetGpuReg((bg << 1) + REG_OFFSET_BG0CNT, value);
|
|
|
|
sGpuBgConfigs.bgVisibilityAndMode |= 1 << (bg + 8);
|
|
sGpuBgConfigs.bgVisibilityAndMode &= DISPCNT_ALL_BG_AND_MODE_BITS;
|
|
}
|
|
}
|
|
|
|
static void HideBgInternal(u8 bg)
|
|
{
|
|
if (!IsInvalidBg(bg))
|
|
{
|
|
sGpuBgConfigs.bgVisibilityAndMode &= ~(1 << (bg + 8));
|
|
sGpuBgConfigs.bgVisibilityAndMode &= DISPCNT_ALL_BG_AND_MODE_BITS;
|
|
}
|
|
}
|
|
|
|
static void SyncBgVisibilityAndMode(void)
|
|
{
|
|
SetGpuReg(REG_OFFSET_DISPCNT, (GetGpuReg(REG_OFFSET_DISPCNT) & ~DISPCNT_ALL_BG_AND_MODE_BITS) | sGpuBgConfigs.bgVisibilityAndMode);
|
|
}
|
|
|
|
void SetTextModeAndHideBgs(void)
|
|
{
|
|
SetGpuReg(REG_OFFSET_DISPCNT, GetGpuReg(REG_OFFSET_DISPCNT) & ~DISPCNT_ALL_BG_AND_MODE_BITS);
|
|
}
|
|
|
|
static void SetBgAffineInternal(u8 bg, s32 srcCenterX, s32 srcCenterY, s16 dispCenterX, s16 dispCenterY, s16 scaleX, s16 scaleY, u16 rotationAngle)
|
|
{
|
|
struct BgAffineSrcData src;
|
|
struct BgAffineDstData dest;
|
|
|
|
switch (sGpuBgConfigs.bgVisibilityAndMode & 0x7)
|
|
{
|
|
case 1:
|
|
if (bg != 2)
|
|
return;
|
|
break;
|
|
case 2:
|
|
if (bg < 2 || bg > 3)
|
|
return;
|
|
break;
|
|
case 0:
|
|
default:
|
|
return;
|
|
}
|
|
|
|
src.texX = srcCenterX;
|
|
src.texY = srcCenterY;
|
|
src.scrX = dispCenterX;
|
|
src.scrY = dispCenterY;
|
|
src.sx = scaleX;
|
|
src.sy = scaleY;
|
|
src.alpha = rotationAngle;
|
|
|
|
BgAffineSet(&src, &dest, 1);
|
|
|
|
SetGpuReg(REG_OFFSET_BG2PA, dest.pa);
|
|
SetGpuReg(REG_OFFSET_BG2PB, dest.pb);
|
|
SetGpuReg(REG_OFFSET_BG2PC, dest.pc);
|
|
SetGpuReg(REG_OFFSET_BG2PD, dest.pd);
|
|
SetGpuReg(REG_OFFSET_BG2PA, dest.pa);
|
|
SetGpuReg(REG_OFFSET_BG2X_L, (s16)(dest.dx));
|
|
SetGpuReg(REG_OFFSET_BG2X_H, (s16)(dest.dx >> 16));
|
|
SetGpuReg(REG_OFFSET_BG2Y_L, (s16)(dest.dy));
|
|
SetGpuReg(REG_OFFSET_BG2Y_H, (s16)(dest.dy >> 16));
|
|
}
|
|
|
|
bool8 IsInvalidBg(u8 bg)
|
|
{
|
|
if (bg > 3)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
int DummiedOutFireRedLeafGreenTileAllocFunc(int a1, int a2, int a3, int a4)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void ResetBgsAndClearDma3BusyFlags(u32 leftoverFireRedLeafGreenVariable)
|
|
{
|
|
int i;
|
|
ResetBgs();
|
|
|
|
for (i = 0; i < 4; i++)
|
|
{
|
|
sDmaBusyBitfield[i] = 0;
|
|
}
|
|
|
|
gUnneededFireRedVariable = leftoverFireRedLeafGreenVariable;
|
|
}
|
|
|
|
void InitBgsFromTemplates(u8 bgMode, const struct BgTemplate *templates, u8 numTemplates)
|
|
{
|
|
int i;
|
|
u8 bg;
|
|
|
|
SetBgModeInternal(bgMode);
|
|
ResetBgControlStructs();
|
|
|
|
for (i = 0; i < numTemplates; i++)
|
|
{
|
|
bg = templates[i].bg;
|
|
if (bg < 4)
|
|
{
|
|
SetBgControlAttributes(bg,
|
|
templates[i].charBaseIndex,
|
|
templates[i].mapBaseIndex,
|
|
templates[i].screenSize,
|
|
templates[i].paletteMode,
|
|
templates[i].priority,
|
|
0,
|
|
0);
|
|
|
|
sGpuBgConfigs2[bg].baseTile = templates[i].baseTile;
|
|
sGpuBgConfigs2[bg].basePalette = 0;
|
|
sGpuBgConfigs2[bg].unk_3 = 0;
|
|
|
|
sGpuBgConfigs2[bg].tilemap = NULL;
|
|
sGpuBgConfigs2[bg].bg_x = 0;
|
|
sGpuBgConfigs2[bg].bg_y = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void InitBgFromTemplate(const struct BgTemplate *template)
|
|
{
|
|
u8 bg = template->bg;
|
|
|
|
if (bg < 4)
|
|
{
|
|
SetBgControlAttributes(bg,
|
|
template->charBaseIndex,
|
|
template->mapBaseIndex,
|
|
template->screenSize,
|
|
template->paletteMode,
|
|
template->priority,
|
|
0,
|
|
0);
|
|
|
|
sGpuBgConfigs2[bg].baseTile = template->baseTile;
|
|
sGpuBgConfigs2[bg].basePalette = 0;
|
|
sGpuBgConfigs2[bg].unk_3 = 0;
|
|
|
|
sGpuBgConfigs2[bg].tilemap = NULL;
|
|
sGpuBgConfigs2[bg].bg_x = 0;
|
|
sGpuBgConfigs2[bg].bg_y = 0;
|
|
}
|
|
}
|
|
|
|
void SetBgMode(u8 bgMode)
|
|
{
|
|
SetBgModeInternal(bgMode);
|
|
}
|
|
|
|
u16 LoadBgTiles(u8 bg, const void* src, u16 size, u16 destOffset)
|
|
{
|
|
u16 tileOffset;
|
|
u8 cursor;
|
|
|
|
if (GetBgControlAttribute(bg, BG_CTRL_ATTR_PALETTEMODE) == 0)
|
|
{
|
|
tileOffset = (sGpuBgConfigs2[bg].baseTile + destOffset) * 0x20;
|
|
}
|
|
else
|
|
{
|
|
tileOffset = (sGpuBgConfigs2[bg].baseTile + destOffset) * 0x40;
|
|
}
|
|
|
|
cursor = LoadBgVram(bg, src, size, tileOffset, DISPCNT_MODE_1);
|
|
|
|
if (cursor == 0xFF)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
sDmaBusyBitfield[cursor / 0x20] |= (1 << (cursor % 0x20));
|
|
|
|
if (gUnneededFireRedVariable == 1)
|
|
{
|
|
DummiedOutFireRedLeafGreenTileAllocFunc(bg, tileOffset / 0x20, size / 0x20, 1);
|
|
}
|
|
|
|
return cursor;
|
|
}
|
|
|
|
u16 LoadBgTilemap(u8 bg, const void *src, u16 size, u16 destOffset)
|
|
{
|
|
u8 cursor = LoadBgVram(bg, src, size, destOffset * 2, DISPCNT_MODE_2);
|
|
|
|
if (cursor == 0xFF)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
sDmaBusyBitfield[cursor / 0x20] |= (1 << (cursor % 0x20));
|
|
|
|
return cursor;
|
|
}
|
|
|
|
u16 Unused_LoadBgPalette(u8 bg, const void *src, u16 size, u16 destOffset)
|
|
{
|
|
s8 cursor;
|
|
|
|
if (!IsInvalidBg32(bg))
|
|
{
|
|
u16 paletteOffset = (sGpuBgConfigs2[bg].basePalette * 0x20) + (destOffset * 2);
|
|
cursor = RequestDma3Copy(src, (void*)(paletteOffset + BG_PLTT), size, 0);
|
|
|
|
if (cursor == -1)
|
|
{
|
|
return -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
sDmaBusyBitfield[cursor / 0x20] |= (1 << (cursor % 0x20));
|
|
|
|
return (u8)cursor;
|
|
}
|
|
|
|
bool8 IsDma3ManagerBusyWithBgCopy(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x80; i++)
|
|
{
|
|
u8 div = i / 0x20;
|
|
u8 mod = i % 0x20;
|
|
|
|
if ((sDmaBusyBitfield[div] & (1 << mod)))
|
|
{
|
|
s8 reqSpace = CheckForSpaceForDma3Request(i);
|
|
if (reqSpace == -1)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
sDmaBusyBitfield[div] &= ~(1 << mod);
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void ShowBg(u8 bg)
|
|
{
|
|
ShowBgInternal(bg);
|
|
SyncBgVisibilityAndMode();
|
|
}
|
|
|
|
void HideBg(u8 bg)
|
|
{
|
|
HideBgInternal(bg);
|
|
SyncBgVisibilityAndMode();
|
|
}
|
|
|
|
void SetBgAttribute(u8 bg, u8 attributeId, u8 value)
|
|
{
|
|
switch (attributeId)
|
|
{
|
|
case BG_ATTR_CHARBASEINDEX:
|
|
SetBgControlAttributes(bg, value, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
|
|
break;
|
|
case BG_ATTR_MAPBASEINDEX:
|
|
SetBgControlAttributes(bg, 0xFF, value, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
|
|
break;
|
|
case BG_ATTR_SCREENSIZE:
|
|
SetBgControlAttributes(bg, 0xFF, 0xFF, value, 0xFF, 0xFF, 0xFF, 0xFF);
|
|
break;
|
|
case BG_ATTR_PALETTEMODE:
|
|
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, value, 0xFF, 0xFF, 0xFF);
|
|
break;
|
|
case BG_ATTR_PRIORITY:
|
|
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, value, 0xFF, 0xFF);
|
|
break;
|
|
case BG_ATTR_MOSAIC:
|
|
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, value, 0xFF);
|
|
break;
|
|
case BG_ATTR_WRAPAROUND:
|
|
SetBgControlAttributes(bg, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, value);
|
|
break;
|
|
}
|
|
}
|
|
|
|
u16 GetBgAttribute(u8 bg, u8 attributeId)
|
|
{
|
|
switch (attributeId)
|
|
{
|
|
case BG_ATTR_CHARBASEINDEX:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_CHARBASEINDEX);
|
|
case BG_ATTR_MAPBASEINDEX:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_MAPBASEINDEX);
|
|
case BG_ATTR_SCREENSIZE:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
|
|
case BG_ATTR_PALETTEMODE:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_PALETTEMODE);
|
|
case BG_ATTR_PRIORITY:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_PRIORITY);
|
|
case BG_ATTR_MOSAIC:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_MOSAIC);
|
|
case BG_ATTR_WRAPAROUND:
|
|
return GetBgControlAttribute(bg, BG_CTRL_ATTR_WRAPAROUND);
|
|
case BG_ATTR_METRIC:
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
return GetBgMetricTextMode(bg, 0) * 0x800;
|
|
case 1:
|
|
return GetBgMetricAffineMode(bg, 0) * 0x100;
|
|
default:
|
|
return 0;
|
|
}
|
|
case BG_ATTR_TYPE:
|
|
return GetBgType(bg);
|
|
case BG_ATTR_BASETILE:
|
|
return sGpuBgConfigs2[bg].baseTile;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
s32 ChangeBgX(u8 bg, s32 value, u8 op)
|
|
{
|
|
u8 mode;
|
|
u16 temp1;
|
|
u16 temp2;
|
|
|
|
if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
switch (op)
|
|
{
|
|
case 0:
|
|
default:
|
|
sGpuBgConfigs2[bg].bg_x = value;
|
|
break;
|
|
case 1:
|
|
sGpuBgConfigs2[bg].bg_x += value;
|
|
break;
|
|
case 2:
|
|
sGpuBgConfigs2[bg].bg_x -= value;
|
|
break;
|
|
}
|
|
|
|
mode = GetBgMode();
|
|
|
|
switch (bg)
|
|
{
|
|
case 0:
|
|
temp1 = sGpuBgConfigs2[0].bg_x >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG0HOFS, temp1);
|
|
break;
|
|
case 1:
|
|
temp1 = sGpuBgConfigs2[1].bg_x >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG1HOFS, temp1);
|
|
break;
|
|
case 2:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_x >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG2HOFS, temp1);
|
|
}
|
|
else
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_x >> 0x10;
|
|
temp2 = sGpuBgConfigs2[2].bg_x & 0xFFFF;
|
|
SetGpuReg(REG_OFFSET_BG2X_H, temp1);
|
|
SetGpuReg(REG_OFFSET_BG2X_L, temp2);
|
|
}
|
|
break;
|
|
case 3:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_x >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG3HOFS, temp1);
|
|
}
|
|
else if (mode == 2)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_x >> 0x10;
|
|
temp2 = sGpuBgConfigs2[3].bg_x & 0xFFFF;
|
|
SetGpuReg(REG_OFFSET_BG3X_H, temp1);
|
|
SetGpuReg(REG_OFFSET_BG3X_L, temp2);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return sGpuBgConfigs2[bg].bg_x;
|
|
}
|
|
|
|
s32 GetBgX(u8 bg)
|
|
{
|
|
if (IsInvalidBg32(bg))
|
|
return -1;
|
|
else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
return -1;
|
|
else
|
|
return sGpuBgConfigs2[bg].bg_x;
|
|
}
|
|
|
|
s32 ChangeBgY(u8 bg, s32 value, u8 op)
|
|
{
|
|
u8 mode;
|
|
u16 temp1;
|
|
u16 temp2;
|
|
|
|
if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
switch (op)
|
|
{
|
|
case 0:
|
|
default:
|
|
sGpuBgConfigs2[bg].bg_y = value;
|
|
break;
|
|
case 1:
|
|
sGpuBgConfigs2[bg].bg_y += value;
|
|
break;
|
|
case 2:
|
|
sGpuBgConfigs2[bg].bg_y -= value;
|
|
break;
|
|
}
|
|
|
|
mode = GetBgMode();
|
|
|
|
switch (bg)
|
|
{
|
|
case 0:
|
|
temp1 = sGpuBgConfigs2[0].bg_y >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG0VOFS, temp1);
|
|
break;
|
|
case 1:
|
|
temp1 = sGpuBgConfigs2[1].bg_y >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG1VOFS, temp1);
|
|
break;
|
|
case 2:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_y >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG2VOFS, temp1);
|
|
}
|
|
else
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_y >> 0x10;
|
|
temp2 = sGpuBgConfigs2[2].bg_y & 0xFFFF;
|
|
SetGpuReg(REG_OFFSET_BG2Y_H, temp1);
|
|
SetGpuReg(REG_OFFSET_BG2Y_L, temp2);
|
|
}
|
|
break;
|
|
case 3:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_y >> 0x8;
|
|
SetGpuReg(REG_OFFSET_BG3VOFS, temp1);
|
|
}
|
|
else if (mode == 2)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_y >> 0x10;
|
|
temp2 = sGpuBgConfigs2[3].bg_y & 0xFFFF;
|
|
SetGpuReg(REG_OFFSET_BG3Y_H, temp1);
|
|
SetGpuReg(REG_OFFSET_BG3Y_L, temp2);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return sGpuBgConfigs2[bg].bg_y;
|
|
}
|
|
|
|
s32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op)
|
|
{
|
|
u8 mode;
|
|
u16 temp1;
|
|
u16 temp2;
|
|
|
|
if (IsInvalidBg32(bg) || !GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
switch (op)
|
|
{
|
|
case 0:
|
|
default:
|
|
sGpuBgConfigs2[bg].bg_y = value;
|
|
break;
|
|
case 1:
|
|
sGpuBgConfigs2[bg].bg_y += value;
|
|
break;
|
|
case 2:
|
|
sGpuBgConfigs2[bg].bg_y -= value;
|
|
break;
|
|
}
|
|
|
|
mode = GetBgMode();
|
|
|
|
switch (bg)
|
|
{
|
|
case 0:
|
|
temp1 = sGpuBgConfigs2[0].bg_y >> 0x8;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG0VOFS, temp1);
|
|
break;
|
|
case 1:
|
|
temp1 = sGpuBgConfigs2[1].bg_y >> 0x8;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG1VOFS, temp1);
|
|
break;
|
|
case 2:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_y >> 0x8;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG2VOFS, temp1);
|
|
|
|
}
|
|
else
|
|
{
|
|
temp1 = sGpuBgConfigs2[2].bg_y >> 0x10;
|
|
temp2 = sGpuBgConfigs2[2].bg_y & 0xFFFF;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG2Y_H, temp1);
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG2Y_L, temp2);
|
|
}
|
|
break;
|
|
case 3:
|
|
if (mode == 0)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_y >> 0x8;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG3VOFS, temp1);
|
|
}
|
|
else if (mode == 2)
|
|
{
|
|
temp1 = sGpuBgConfigs2[3].bg_y >> 0x10;
|
|
temp2 = sGpuBgConfigs2[3].bg_y & 0xFFFF;
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG3Y_H, temp1);
|
|
SetGpuReg_ForcedBlank(REG_OFFSET_BG3Y_L, temp2);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return sGpuBgConfigs2[bg].bg_y;
|
|
}
|
|
|
|
s32 GetBgY(u8 bg)
|
|
{
|
|
if (IsInvalidBg32(bg))
|
|
return -1;
|
|
else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
return -1;
|
|
else
|
|
return sGpuBgConfigs2[bg].bg_y;
|
|
}
|
|
|
|
void SetBgAffine(u8 bg, s32 srcCenterX, s32 srcCenterY, s16 dispCenterX, s16 dispCenterY, s16 scaleX, s16 scaleY, u16 rotationAngle)
|
|
{
|
|
SetBgAffineInternal(bg, srcCenterX, srcCenterY, dispCenterX, dispCenterY, scaleX, scaleY, rotationAngle);
|
|
}
|
|
|
|
u8 Unused_AdjustBgMosaic(u8 a1, u8 a2)
|
|
{
|
|
u16 result = GetGpuReg(REG_OFFSET_MOSAIC);
|
|
s16 test1 = result & 0xF;
|
|
s16 test2 = (result >> 4) & 0xF;
|
|
|
|
result &= 0xFF00;
|
|
|
|
switch (a2)
|
|
{
|
|
case 0:
|
|
default:
|
|
test1 = a1 & 0xF;
|
|
test2 = a1 >> 0x4;
|
|
break;
|
|
case 1:
|
|
test1 = a1 & 0xF;
|
|
break;
|
|
case 2:
|
|
if ((test1 + a1) > 0xF)
|
|
{
|
|
test1 = 0xF;
|
|
}
|
|
else
|
|
{
|
|
test1 += a1;
|
|
}
|
|
break;
|
|
case 3:
|
|
if ((test1 - a1) < 0)
|
|
{
|
|
test1 = 0x0;
|
|
}
|
|
else
|
|
{
|
|
test1 -= a1;
|
|
}
|
|
break;
|
|
case 4:
|
|
test2 = a1 & 0xF;
|
|
break;
|
|
case 5:
|
|
if ((test2 + a1) > 0xF)
|
|
{
|
|
test2 = 0xF;
|
|
}
|
|
else
|
|
{
|
|
test2 += a1;
|
|
}
|
|
break;
|
|
case 6:
|
|
if ((test2 - a1) < 0)
|
|
{
|
|
test2 = 0x0;
|
|
}
|
|
else
|
|
{
|
|
test2 -= a1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
result |= ((test2 << 0x4) & 0xF0);
|
|
result |= (test1 & 0xF);
|
|
|
|
SetGpuReg(REG_OFFSET_MOSAIC, result);
|
|
|
|
return result;
|
|
}
|
|
|
|
void SetBgTilemapBuffer(u8 bg, void *tilemap)
|
|
{
|
|
if (!IsInvalidBg32(bg) && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
{
|
|
sGpuBgConfigs2[bg].tilemap = tilemap;
|
|
}
|
|
}
|
|
|
|
void UnsetBgTilemapBuffer(u8 bg)
|
|
{
|
|
if (!IsInvalidBg32(bg) && GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
{
|
|
sGpuBgConfigs2[bg].tilemap = NULL;
|
|
}
|
|
}
|
|
|
|
void* GetBgTilemapBuffer(u8 bg)
|
|
{
|
|
if (IsInvalidBg32(bg))
|
|
return NULL;
|
|
else if (!GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE))
|
|
return NULL;
|
|
else
|
|
return sGpuBgConfigs2[bg].tilemap;
|
|
}
|
|
|
|
void CopyToBgTilemapBuffer(u8 bg, const void *src, u16 mode, u16 destOffset)
|
|
{
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
if (mode != 0)
|
|
CpuCopy16(src, (void *)(sGpuBgConfigs2[bg].tilemap + (destOffset * 2)), mode);
|
|
else
|
|
LZ77UnCompWram(src, (void *)(sGpuBgConfigs2[bg].tilemap + (destOffset * 2)));
|
|
}
|
|
}
|
|
|
|
void CopyBgTilemapBufferToVram(u8 bg)
|
|
{
|
|
u16 sizeToLoad;
|
|
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
sizeToLoad = GetBgMetricTextMode(bg, 0) * 0x800;
|
|
break;
|
|
case 1:
|
|
sizeToLoad = GetBgMetricAffineMode(bg, 0) * 0x100;
|
|
break;
|
|
default:
|
|
sizeToLoad = 0;
|
|
break;
|
|
}
|
|
LoadBgVram(bg, sGpuBgConfigs2[bg].tilemap, sizeToLoad, 0, 2);
|
|
}
|
|
}
|
|
|
|
void CopyToBgTilemapBufferRect(u8 bg, const void* src, u8 destX, u8 destY, u8 width, u8 height)
|
|
{
|
|
u16 destX16;
|
|
u16 destY16;
|
|
u16 mode;
|
|
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
{
|
|
const u16 * srcCopy = src;
|
|
for (destY16 = destY; destY16 < (destY + height); destY16++)
|
|
{
|
|
for (destX16 = destX; destX16 < (destX + width); destX16++)
|
|
{
|
|
((u16*)sGpuBgConfigs2[bg].tilemap)[((destY16 * 0x20) + destX16)] = *srcCopy++;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 1:
|
|
{
|
|
const u8 * srcCopy = src;
|
|
mode = GetBgMetricAffineMode(bg, 0x1);
|
|
for (destY16 = destY; destY16 < (destY + height); destY16++)
|
|
{
|
|
for (destX16 = destX; destX16 < (destX + width); destX16++)
|
|
{
|
|
((u8*)sGpuBgConfigs2[bg].tilemap)[((destY16 * mode) + destX16)] = *srcCopy++;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void CopyToBgTilemapBufferRect_ChangePalette(u8 bg, const void *src, u8 destX, u8 destY, u8 rectWidth, u8 rectHeight, u8 palette)
|
|
{
|
|
CopyRectToBgTilemapBufferRect(bg, src, 0, 0, rectWidth, rectHeight, destX, destY, rectWidth, rectHeight, palette, 0, 0);
|
|
}
|
|
|
|
void CopyRectToBgTilemapBufferRect(u8 bg, const void *src, u8 srcX, u8 srcY, u8 srcWidth, u8 unused, u8 srcHeight, u8 destX, u8 destY, u8 rectWidth, u8 rectHeight, s16 palette1, s16 tileOffset)
|
|
{
|
|
u16 screenWidth, screenHeight, screenSize;
|
|
u16 var;
|
|
const void *srcPtr;
|
|
u16 i, j;
|
|
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
screenSize = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
|
|
screenWidth = GetBgMetricTextMode(bg, 0x1) * 0x20;
|
|
screenHeight = GetBgMetricTextMode(bg, 0x2) * 0x20;
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
srcPtr = src + ((srcY * srcWidth) + srcX) * 2;
|
|
for (i = destX; i < (destX + rectWidth); i++)
|
|
{
|
|
for (j = srcHeight; j < (srcHeight + destY); j++)
|
|
{
|
|
u16 index = GetTileMapIndexFromCoords(j, i, screenSize, screenWidth, screenHeight);
|
|
CopyTileMapEntry(srcPtr, sGpuBgConfigs2[bg].tilemap + (index * 2), rectHeight, palette1, tileOffset);
|
|
srcPtr += 2;
|
|
}
|
|
srcPtr += (srcWidth - destY) * 2;
|
|
}
|
|
break;
|
|
case 1:
|
|
srcPtr = src + ((srcY * srcWidth) + srcX);
|
|
var = GetBgMetricAffineMode(bg, 0x1);
|
|
for (i = destX; i < (destX + rectWidth); i++)
|
|
{
|
|
for (j = srcHeight; j < (srcHeight + destY); j++)
|
|
{
|
|
*(u8*)(sGpuBgConfigs2[bg].tilemap + ((var * i) + j)) = *(u8*)(srcPtr) + palette1;
|
|
srcPtr++;
|
|
}
|
|
srcPtr += (srcWidth - destY);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void FillBgTilemapBufferRect_Palette0(u8 bg, u16 tileNum, u8 x, u8 y, u8 width, u8 height)
|
|
{
|
|
u16 x16;
|
|
u16 y16;
|
|
u16 mode;
|
|
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
for (y16 = y; y16 < (y + height); y16++)
|
|
{
|
|
for (x16 = x; x16 < (x + width); x16++)
|
|
{
|
|
((u16*)sGpuBgConfigs2[bg].tilemap)[((y16 * 0x20) + x16)] = tileNum;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
mode = GetBgMetricAffineMode(bg, 0x1);
|
|
for (y16 = y; y16 < (y + height); y16++)
|
|
{
|
|
for (x16 = x; x16 < (x + width); x16++)
|
|
{
|
|
((u8*)sGpuBgConfigs2[bg].tilemap)[((y16 * mode) + x16)] = tileNum;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void FillBgTilemapBufferRect(u8 bg, u16 tileNum, u8 x, u8 y, u8 width, u8 height, u8 palette)
|
|
{
|
|
WriteSequenceToBgTilemapBuffer(bg, tileNum, x, y, width, height, palette, 0);
|
|
}
|
|
|
|
void WriteSequenceToBgTilemapBuffer(u8 bg, u16 firstTileNum, u8 x, u8 y, u8 width, u8 height, u8 paletteSlot, s16 tileNumDelta)
|
|
{
|
|
u16 mode;
|
|
u16 mode2;
|
|
u16 attribute;
|
|
u16 mode3;
|
|
u16 x16, y16;
|
|
|
|
if (!IsInvalidBg32(bg) && !IsTileMapOutsideWram(bg))
|
|
{
|
|
attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
|
|
mode = GetBgMetricTextMode(bg, 0x1) * 0x20;
|
|
mode2 = GetBgMetricTextMode(bg, 0x2) * 0x20;
|
|
switch (GetBgType(bg))
|
|
{
|
|
case 0:
|
|
for (y16 = y; y16 < (y + height); y16++)
|
|
{
|
|
for (x16 = x; x16 < (x + width); x16++)
|
|
{
|
|
CopyTileMapEntry(&firstTileNum, &((u16*)sGpuBgConfigs2[bg].tilemap)[(u16)GetTileMapIndexFromCoords(x16, y16, attribute, mode, mode2)], paletteSlot, 0, 0);
|
|
firstTileNum = (firstTileNum & (METATILE_COLLISION_MASK | METATILE_ELEVATION_MASK)) + ((firstTileNum + tileNumDelta) & METATILE_ID_MASK);
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
mode3 = GetBgMetricAffineMode(bg, 0x1);
|
|
for (y16 = y; y16 < (y + height); y16++)
|
|
{
|
|
for (x16 = x; x16 < (x + width); x16++)
|
|
{
|
|
((u8*)sGpuBgConfigs2[bg].tilemap)[(y16 * mode3) + x16] = firstTileNum;
|
|
firstTileNum = (firstTileNum & (METATILE_COLLISION_MASK | METATILE_ELEVATION_MASK)) + ((firstTileNum + tileNumDelta) & METATILE_ID_MASK);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
u16 GetBgMetricTextMode(u8 bg, u8 whichMetric)
|
|
{
|
|
u8 screenSize = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
|
|
|
|
switch (whichMetric)
|
|
{
|
|
case 0:
|
|
switch (screenSize)
|
|
{
|
|
case 0:
|
|
return 1;
|
|
case 1:
|
|
case 2:
|
|
return 2;
|
|
case 3:
|
|
return 4;
|
|
}
|
|
break;
|
|
case 1:
|
|
switch (screenSize)
|
|
{
|
|
case 0:
|
|
return 1;
|
|
case 1:
|
|
return 2;
|
|
case 2:
|
|
return 1;
|
|
case 3:
|
|
return 2;
|
|
}
|
|
break;
|
|
case 2:
|
|
switch (screenSize)
|
|
{
|
|
case 0:
|
|
case 1:
|
|
return 1;
|
|
case 2:
|
|
case 3:
|
|
return 2;
|
|
}
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
u32 GetBgMetricAffineMode(u8 bg, u8 whichMetric)
|
|
{
|
|
u8 screenSize = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE);
|
|
|
|
switch (whichMetric)
|
|
{
|
|
case 0:
|
|
switch (screenSize)
|
|
{
|
|
case 0:
|
|
return 0x1;
|
|
case 1:
|
|
return 0x4;
|
|
case 2:
|
|
return 0x10;
|
|
case 3:
|
|
return 0x40;
|
|
}
|
|
break;
|
|
case 1:
|
|
case 2:
|
|
return 0x10 << screenSize;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
u32 GetTileMapIndexFromCoords(s32 x, s32 y, s32 screenSize, u32 screenWidth, u32 screenHeight)
|
|
{
|
|
x = x & (screenWidth - 1);
|
|
y = y & (screenHeight - 1);
|
|
|
|
switch (screenSize)
|
|
{
|
|
case 0:
|
|
case 2:
|
|
break;
|
|
case 3:
|
|
if (y >= 0x20)
|
|
y += 0x20;
|
|
case 1:
|
|
if (x >= 0x20)
|
|
{
|
|
x -= 0x20;
|
|
y += 0x20;
|
|
}
|
|
break;
|
|
}
|
|
return (y * 0x20) + x;
|
|
}
|
|
|
|
void CopyTileMapEntry(const u16 *src, u16 *dest, s32 palette1, s32 tileOffset, s32 palette2)
|
|
{
|
|
u16 var;
|
|
|
|
switch (palette1)
|
|
{
|
|
case 0 ... 15:
|
|
var = ((*src + tileOffset) & 0xFFF) + ((palette1 + palette2) << 12);
|
|
break;
|
|
case 16:
|
|
var = *dest;
|
|
var &= 0xFC00;
|
|
var += palette2 << 12;
|
|
var |= (*src + tileOffset) & 0x3FF;
|
|
break;
|
|
default:
|
|
case 17 ... INT_MAX:
|
|
var = *src + tileOffset + (palette2 << 12);
|
|
break;
|
|
}
|
|
*dest = var;
|
|
}
|
|
|
|
u32 GetBgType(u8 bg)
|
|
{
|
|
u8 mode = GetBgMode();
|
|
|
|
switch (bg)
|
|
{
|
|
case 0:
|
|
case 1:
|
|
switch (mode)
|
|
{
|
|
case 0:
|
|
case 1:
|
|
return 0;
|
|
}
|
|
break;
|
|
case 2:
|
|
switch (mode)
|
|
{
|
|
case 0:
|
|
return 0;
|
|
case 1:
|
|
case 2:
|
|
return 1;
|
|
}
|
|
break;
|
|
case 3:
|
|
switch (mode)
|
|
{
|
|
case 0:
|
|
return 0;
|
|
case 2:
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0xFFFF;
|
|
}
|
|
|
|
bool32 IsInvalidBg32(u8 bg)
|
|
{
|
|
if (bg > 3)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
bool32 IsTileMapOutsideWram(u8 bg)
|
|
{
|
|
if (sGpuBgConfigs2[bg].tilemap > (void*)IWRAM_END)
|
|
return TRUE;
|
|
else if (sGpuBgConfigs2[bg].tilemap == NULL)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|