diff options
Diffstat (limited to 'src/bg.c')
| -rw-r--r-- | src/bg.c | 189 |
1 files changed, 90 insertions, 99 deletions
@@ -1,5 +1,6 @@ #include "global.h" #include "dma3.h" +#include "bg.h" #define DISPCNT_ALL_BG_AND_MODE_BITS 0x0F07 @@ -22,33 +23,23 @@ struct BgControl { 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 BgTemplate { - u32 bg:2; - u32 charBaseIndex:2; - u32 mapBaseIndex:5; - u32 screenSize:2; - u32 paletteMode:1; - u32 priority:2; - u32 baseTile:10; + u16 bgVisibilityAndMode; }; struct BgConfig2 { u32 baseTile:10; u32 basePalette:4; u32 unk_3:18; - + void* tilemap; u32 bg_x; u32 bg_y; @@ -103,7 +94,7 @@ void ResetBgControlStructs(void) struct BgConfig* bgConfigs = &gGpuBgConfigs.configs[0]; struct BgConfig zeroedConfig = gZeroedBgControlStruct; int i; - + for (i = 0; i < 4; i++) { bgConfigs[i] = zeroedConfig; @@ -126,40 +117,40 @@ void SetBgControlAttributes(u8 bg, u8 charBaseIndex, u8 mapBaseIndex, u8 screenS { gGpuBgConfigs.configs[bg].charBaseIndex = charBaseIndex & 0x3; } - + if (mapBaseIndex != 0xFF) { gGpuBgConfigs.configs[bg].mapBaseIndex = mapBaseIndex & 0x1F; } - + if (screenSize != 0xFF) { gGpuBgConfigs.configs[bg].screenSize = screenSize & 0x3; } - + if (paletteMode != 0xFF) { gGpuBgConfigs.configs[bg].paletteMode = paletteMode; } - + if (priority != 0xFF) { gGpuBgConfigs.configs[bg].priority = priority & 0x3; } - + if (mosaic != 0xFF) { gGpuBgConfigs.configs[bg].mosaic = mosaic & 0x1; } - + if (wraparound != 0xFF) { gGpuBgConfigs.configs[bg].wraparound = wraparound; } - + gGpuBgConfigs.configs[bg].unknown_2 = 0; gGpuBgConfigs.configs[bg].unknown_3 = 0; - + gGpuBgConfigs.configs[bg].visible = 1; } } @@ -188,7 +179,7 @@ u16 GetBgControlAttribute(u8 bg, u8 attributeId) return gGpuBgConfigs.configs[bg].wraparound; } } - + return 0xFF; } @@ -196,7 +187,7 @@ u8 LoadBgVram(u8 bg, void *src, u16 size, u16 destOffset, u8 mode) { u16 offset; s8 cursor; - + if (IsInvalidBg(bg) == FALSE && gGpuBgConfigs.configs[bg].visible != FALSE) { switch (mode) @@ -211,11 +202,11 @@ u8 LoadBgVram(u8 bg, void *src, u16 size, u16 destOffset, u8 mode) cursor = -1; goto end; } - + offset = destOffset + offset; - + cursor = RequestDma3Copy(src, (void*)(offset + BG_VRAM), size, 0); - + if (cursor == -1) { return -1; @@ -225,7 +216,7 @@ u8 LoadBgVram(u8 bg, void *src, u16 size, u16 destOffset, u8 mode) { return -1; } - + end: return cursor; } @@ -242,9 +233,9 @@ void ShowBgInternal(u8 bg) (gGpuBgConfigs.configs[bg].mapBaseIndex << 8) | (gGpuBgConfigs.configs[bg].wraparound << 13) | (gGpuBgConfigs.configs[bg].screenSize << 14); - + SetGpuReg((bg << 1) + 0x8, value); - + gGpuBgConfigs.bgVisibilityAndMode |= 1 << (bg + 8); gGpuBgConfigs.bgVisibilityAndMode &= DISPCNT_ALL_BG_AND_MODE_BITS; } @@ -273,7 +264,7 @@ void SetBgAffineInternal(u8 bg, u32 srcCenterX, u32 srcCenterY, s16 dispCenterX, { struct BgAffineSrcData src; struct BgAffineDstData dest; - + switch (gGpuBgConfigs.bgVisibilityAndMode & 0x7) { case 1: @@ -288,7 +279,7 @@ void SetBgAffineInternal(u8 bg, u32 srcCenterX, u32 srcCenterY, s16 dispCenterX, default: return; } - + src.texX = srcCenterX; src.texY = srcCenterY; src.scrX = dispCenterX; @@ -296,7 +287,7 @@ void SetBgAffineInternal(u8 bg, u32 srcCenterX, u32 srcCenterY, s16 dispCenterX, src.sx = scaleX; src.sy = scaleY; src.alpha = rotationAngle; - + BgAffineSet(&src, &dest, 1); SetGpuReg(REG_OFFSET_BG2PA, dest.pa); @@ -326,20 +317,20 @@ void ResetBgsAndClearDma3BusyFlags(u32 leftoverFireRedLeafGreenVariable) { int i; ResetBgs(); - + for (i = 0; i < 4; i++) { gDmaBusyBitfield[i] = 0; } - + gUnneededFireRedVariable = leftoverFireRedLeafGreenVariable; } -void InitBgsFromTemplates(u8 bgMode, struct BgTemplate *templates, u8 numTemplates) +void InitBgsFromTemplates(u8 bgMode, const struct BgTemplate *templates, u8 numTemplates) { int i; u8 bg; - + SetBgModeInternal(bgMode); ResetBgControlStructs(); @@ -355,11 +346,11 @@ void InitBgsFromTemplates(u8 bgMode, struct BgTemplate *templates, u8 numTemplat templates[i].priority, 0, 0); - + gGpuBgConfigs2[bg].baseTile = templates[i].baseTile; gGpuBgConfigs2[bg].basePalette = 0; gGpuBgConfigs2[bg].unk_3 = 0; - + gGpuBgConfigs2[bg].tilemap = NULL; gGpuBgConfigs2[bg].bg_x = 0; gGpuBgConfigs2[bg].bg_y = 0; @@ -367,10 +358,10 @@ void InitBgsFromTemplates(u8 bgMode, struct BgTemplate *templates, u8 numTemplat } } -void InitBgFromTemplate(struct BgTemplate *template) +void InitBgFromTemplate(const struct BgTemplate *template) { u8 bg = template->bg; - + if (bg < 4) { SetBgControlAttributes(bg, @@ -381,11 +372,11 @@ void InitBgFromTemplate(struct BgTemplate *template) template->priority, 0, 0); - + gGpuBgConfigs2[bg].baseTile = template->baseTile; gGpuBgConfigs2[bg].basePalette = 0; gGpuBgConfigs2[bg].unk_3 = 0; - + gGpuBgConfigs2[bg].tilemap = NULL; gGpuBgConfigs2[bg].bg_x = 0; gGpuBgConfigs2[bg].bg_y = 0; @@ -401,7 +392,7 @@ u16 LoadBgTiles(u8 bg, void* src, u16 size, u16 destOffset) { u16 tileOffset; u8 cursor; - + if (GetBgControlAttribute(bg, BG_CTRL_ATTR_PALETTEMODE) == 0) { tileOffset = (gGpuBgConfigs2[bg].baseTile + destOffset) * 0x20; @@ -410,37 +401,37 @@ u16 LoadBgTiles(u8 bg, void* src, u16 size, u16 destOffset) { tileOffset = (gGpuBgConfigs2[bg].baseTile + destOffset) * 0x40; } - + cursor = LoadBgVram(bg, src, size, tileOffset, DISPCNT_MODE_1); - + if (cursor == 0xFF) { return -1; } - + gDmaBusyBitfield[cursor / 0x20] |= (1 << (cursor % 0x20)); - + if (gUnneededFireRedVariable == 1) { DummiedOutFireRedLeafGreenTileAllocFunc(bg, tileOffset / 0x20, size / 0x20, 1); } - + return cursor; } u16 LoadBgTilemap(u8 bg, void *src, u16 size, u16 destOffset) { u8 cursor; - + cursor = LoadBgVram(bg, src, size, destOffset * 2, DISPCNT_MODE_2); - + if (cursor == 0xFF) { return -1; } - + gDmaBusyBitfield[cursor / 0x20] |= (1 << (cursor % 0x20)); - + return cursor; } @@ -448,12 +439,12 @@ u16 Unused_LoadBgPalette(u8 bg, void *src, u16 size, u16 destOffset) { u16 paletteOffset; s8 cursor; - + if (IsInvalidBg32(bg) == FALSE) { paletteOffset = (gGpuBgConfigs2[bg].basePalette * 0x20) + (destOffset * 2); cursor = RequestDma3Copy(src, (void*)(paletteOffset + BG_PLTT), size, 0); - + if (cursor == -1) { return -1; @@ -475,14 +466,14 @@ bool8 IsDma3ManagerBusyWithBgCopy(void) u8 mod; u8 div; s8 reqSpace; - + int i; - + for (i = 0; i < 0x80; i++) { div = i / 0x20; mod = i % 0x20; - + if ((gDmaBusyBitfield[div] & (1 << mod)) != FALSE) { reqSpace = CheckForSpaceForDma3Request(i); @@ -490,7 +481,7 @@ bool8 IsDma3ManagerBusyWithBgCopy(void) { return TRUE; } - + gDmaBusyBitfield[div] &= ~(1 << mod); } } @@ -634,12 +625,12 @@ u32 ChangeBgX(u8 bg, u32 value, u8 op) u8 mode; u16 temp1; u16 temp2; - + if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0) { return -1; } - + switch (op) { case 0: @@ -653,9 +644,9 @@ u32 ChangeBgX(u8 bg, u32 value, u8 op) gGpuBgConfigs2[bg].bg_x -= value; break; } - + mode = GetBgMode(); - + switch (bg) { case 0: @@ -695,7 +686,7 @@ u32 ChangeBgX(u8 bg, u32 value, u8 op) } break; } - + return gGpuBgConfigs2[bg].bg_x; } @@ -713,12 +704,12 @@ u32 ChangeBgY(u8 bg, u32 value, u8 op) u8 mode; u16 temp1; u16 temp2; - + if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0) { return -1; } - + switch (op) { case 0: @@ -732,9 +723,9 @@ u32 ChangeBgY(u8 bg, u32 value, u8 op) gGpuBgConfigs2[bg].bg_y -= value; break; } - + mode = GetBgMode(); - + switch (bg) { case 0: @@ -774,7 +765,7 @@ u32 ChangeBgY(u8 bg, u32 value, u8 op) } break; } - + return gGpuBgConfigs2[bg].bg_y; } @@ -783,12 +774,12 @@ u32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op) u8 mode; u16 temp1; u16 temp2; - + if (IsInvalidBg32(bg) != FALSE || GetBgControlAttribute(bg, BG_CTRL_ATTR_VISIBLE) == 0) { return -1; } - + switch (op) { case 0: @@ -802,9 +793,9 @@ u32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op) gGpuBgConfigs2[bg].bg_y -= value; break; } - + mode = GetBgMode(); - + switch (bg) { case 0: @@ -820,7 +811,7 @@ u32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op) { temp1 = gGpuBgConfigs2[2].bg_y >> 0x8; SetGpuReg_ForcedBlank(REG_OFFSET_BG2VOFS, temp1); - + } else { @@ -845,7 +836,7 @@ u32 ChangeBgY_ScreenOff(u8 bg, u32 value, u8 op) } break; } - + return gGpuBgConfigs2[bg].bg_y; } @@ -868,13 +859,13 @@ u8 Unused_AdjustBgMosaic(u8 a1, u8 a2) u16 result; s16 test1; s16 test2; - + result = GetGpuReg(REG_OFFSET_MOSAIC); - + test1 = result & 0xF; test2 = (result >> 4) & 0xF; result &= 0xFF00; - + switch (a2) { case 0: @@ -929,12 +920,12 @@ u8 Unused_AdjustBgMosaic(u8 a1, u8 a2) } break; } - + result |= ((test2 << 0x4) & 0xF0); result |= (test1 & 0xF); - + SetGpuReg(REG_OFFSET_MOSAIC, result); - + return result; } @@ -981,7 +972,7 @@ void CopyToBgTilemapBuffer(u8 bg, void *src, u16 mode, u16 destOffset) void CopyBgTilemapBufferToVram(u8 bg) { u16 sizeToLoad; - + if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE) { switch (GetBgType(bg)) @@ -1006,7 +997,7 @@ void CopyToBgTilemapBufferRect(u8 bg, void* src, u8 destX, u8 destY, u8 width, u u16 destX16; u16 destY16; u16 mode; - + if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE) { switch (GetBgType(bg)) @@ -1047,11 +1038,11 @@ void CopyRectToBgTilemapBufferRect(u8 bg, void* src, u8 srcX, u8 srcY, u8 srcWid u16 attribute; u16 mode; u16 mode2; - + void* srcCopy; u16 destX16; u16 destY16; - + if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE) { attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE); @@ -1336,7 +1327,7 @@ void FillBgTilemapBufferRect_Palette0(u8 bg, u16 tileNum, u8 x, u8 y, u8 width, u16 x16; u16 y16; u16 mode; - + if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE) { switch (GetBgType(bg)) @@ -1375,10 +1366,10 @@ void WriteSequenceToBgTilemapBuffer(u8 bg, u16 firstTileNum, u8 x, u8 y, u8 widt u16 mode2; u16 attribute; u16 mode3; - + u16 x16; u16 y16; - + if (IsInvalidBg32(bg) == FALSE && IsTileMapOutsideWram(bg) == FALSE) { attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE); @@ -1414,9 +1405,9 @@ void WriteSequenceToBgTilemapBuffer(u8 bg, u16 firstTileNum, u8 x, u8 y, u8 widt u16 GetBgMetricTextMode(u8 bg, u8 whichMetric) { u8 attribute; - + attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE); - + switch (whichMetric) { case 0: @@ -1462,9 +1453,9 @@ u16 GetBgMetricTextMode(u8 bg, u8 whichMetric) u32 GetBgMetricAffineMode(u8 bg, u8 whichMetric) { u8 attribute; - + attribute = GetBgControlAttribute(bg, BG_CTRL_ATTR_SCREENSIZE); - + switch (whichMetric) { case 0: @@ -1491,7 +1482,7 @@ u32 GetTileMapIndexFromCoords(s32 x, s32 y, s32 screenSize, u32 screenWidth, u32 { x = x & (screenWidth - 1); y = y & (screenHeight - 1); - + switch (screenSize) { case 0: @@ -1526,7 +1517,7 @@ void CopyTileMapEntry(u16 *src, u16 *dest, s32 palette1, u32 tileOffset, u32 pal test = ((*dest & 0xFC00) + (palette2 << 12)) | ((*src + tileOffset) & 0x3FF); break; } - + *dest = test; } #else @@ -1586,10 +1577,10 @@ _08002B3C:\n\ u32 GetBgType(u8 bg) { u8 mode; - + mode = GetBgMode(); - - + + switch (bg) { case 0: @@ -1621,7 +1612,7 @@ u32 GetBgType(u8 bg) } break; } - + return 0xFFFF; } |