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Replace bit-packed map data with flags

This commit is contained in:
Jeffrey Pfau 2013-10-25 23:33:22 -07:00
parent 7cb183a8be
commit 6e40c7ec29
2 changed files with 23 additions and 28 deletions
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13
src/gba/gba-video.h
View File

@ -111,15 +111,10 @@ union GBAOAM {
uint16_t raw[512];
};
union GBATextMapData {
struct {
unsigned tile : 10;
unsigned hflip : 1;
unsigned vflip : 1;
unsigned palette : 4;
};
uint16_t packed;
};
#define GBA_TEXT_MAP_TILE(MAP) ((MAP) & 0x03FF)
#define GBA_TEXT_MAP_HFLIP(MAP) ((MAP) & 0x0400)
#define GBA_TEXT_MAP_VFLIP(MAP) ((MAP) & 0x0800)
#define GBA_TEXT_MAP_PALETTE(MAP) (((MAP) & 0xF000) >> 12)
union GBARegisterDISPCNT {
struct {

38
src/gba/renderers/video-software.c
View File

@ -663,8 +663,8 @@ static void _composite(struct GBAVideoSoftwareRenderer* renderer, int offset, ui
xBase += (localX & 0x100) << 5; \
} \
screenBase = (background->screenBase >> 1) + (xBase >> 3) + (yBase << 2); \
mapData.packed = renderer->d.vram[screenBase]; \
if (!mapData.vflip) { \
mapData = renderer->d.vram[screenBase]; \
if (!GBA_TEXT_MAP_VFLIP(mapData)) { \
localY = inY & 0x7; \
} else { \
localY = 7 - (inY & 0x7); \
@ -708,7 +708,7 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
y -= y % mosaicV;
}
int inY = y + background->y;
union GBATextMapData mapData;
uint16_t mapData;
unsigned yBase = inY & 0xF8;
if (background->size == 2) {
@ -750,10 +750,10 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
int end = outX + 0x8 - mod8;
if (!background->multipalette) {
paletteData = mapData.palette << 4;
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4;
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY;
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (!mapData.hflip) {
if (!GBA_TEXT_MAP_HFLIP(mapData)) {
tileData >>= 4 * mod8;
for (; outX < end; ++outX) {
BACKGROUND_DRAW_PIXEL_16;
@ -765,7 +765,7 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
}
} else {
// TODO: hflip
charBase = ((background->charBase + (mapData.tile << 6)) >> 2) + (localY << 1);
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1);
int end2 = end - 4;
int shift = inX & 0x3;
if (end2 > 0) {
@ -792,10 +792,10 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
int end = 0x8 - mod8;
if (!background->multipalette) {
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY;
tileData = ((uint32_t*)renderer->d.vram)[charBase];
paletteData = mapData.palette << 4;
if (!mapData.hflip) {
paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4;
if (!GBA_TEXT_MAP_HFLIP(mapData)) {
outX = renderer->end - mod8;
if (outX < 0) {
tileData >>= 4 * -outX;
@ -816,7 +816,7 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
}
} else {
// TODO: hflip
charBase = ((background->charBase + (mapData.tile << 6)) >> 2) + (localY << 1);
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1);
outX = renderer->end - 8 + end;
int end2 = 4 - end;
if (end2 > 0) {
@ -846,13 +846,13 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
if (!background->multipalette) {
for (; tileX < tileEnd; ++tileX) {
BACKGROUND_TEXT_SELECT_CHARACTER;
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY;
tileData = carryData;
for (x = 0; x < 8; ++x) {
if (!mosaicWait) {
paletteData = mapData.palette << 4;
paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4;
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (!mapData.hflip) {
if (!GBA_TEXT_MAP_HFLIP(mapData)) {
tileData >>= x * 4;
} else {
tileData >>= (7 - x) * 4;
@ -882,11 +882,11 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
if (!background->multipalette) {
for (; tileX < tileEnd; ++tileX) {
BACKGROUND_TEXT_SELECT_CHARACTER;
paletteData = mapData.palette << 4;
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4;
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY;
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (tileData) {
if (!mapData.hflip) {
if (!GBA_TEXT_MAP_HFLIP(mapData)) {
BACKGROUND_DRAW_PIXEL_16;
++outX;
BACKGROUND_DRAW_PIXEL_16;
@ -929,8 +929,8 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
} else {
for (; tileX < tileEnd; ++tileX) {
BACKGROUND_TEXT_SELECT_CHARACTER;
charBase = ((background->charBase + (mapData.tile << 6)) >> 2) + (localY << 1);
if (!mapData.hflip) {
charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1);
if (!GBA_TEXT_MAP_HFLIP(mapData)) {
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (tileData) {
BACKGROUND_DRAW_PIXEL_256;