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-rw-r--r--src/bg.c1256
1 files changed, 0 insertions, 1256 deletions
diff --git a/src/bg.c b/src/bg.c
deleted file mode 100644
index ab4e8b60d..000000000
--- a/src/bg.c
+++ /dev/null
@@ -1,1256 +0,0 @@
-#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;
-
- if (palette1 == 16)
- goto CASE_16;
- switch (palette1)
- {
- case 0 ... 16:
- var = ((*src + tileOffset) & 0xFFF) + ((palette1 + palette2) << 12);
- break;
- CASE_16:
- var = *dest;
- var &= 0xFC00;
- var += palette2 << 12;
- var |= (*src + tileOffset) & 0x3FF;
- break;
- default:
- 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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-08 18:21:01 +0000