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This commit is contained in:
scnorton
2017-09-18 11:26:45 -04:00
parent 8604291b0f
commit c5dddf41f5
11 changed files with 390 additions and 317 deletions
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189
src/bg.c
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@@ -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;
}