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Support edge cases for 256-color mode 0, excluding hflip

This commit is contained in:
Jeffrey Pfau 2013-05-03 01:21:25 -07:00
parent 1c6fc26bf7
commit 862c93916d
1 changed files with 92 additions and 27 deletions
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119
src/gba/renderers/video-software.c
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@ -536,58 +536,123 @@ static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, stru
int outX = 0; int outX = 0;
int tileX = 0; int tileX = 0;
if (inX & 0x7) { if (inX & 0x7) {
int end = 0x8 - (inX & 0x7);
uint32_t tileData; uint32_t tileData;
BACKGROUND_TEXT_SELECT_CHARACTER; BACKGROUND_TEXT_SELECT_CHARACTER;
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
tileData = ((uint32_t*)renderer->d.vram)[charBase]; int end = 0x8 - (inX & 0x7);
if (!mapData.hflip) { if (!background->multipalette) {
tileData >>= 4 * (inX & 0x7); charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
if (!variant) { tileData = ((uint32_t*)renderer->d.vram)[charBase];
for (outX = 0; outX < end; ++outX) { if (!mapData.hflip) {
BACKGROUND_DRAW_PIXEL_16_NORMAL; tileData >>= 4 * (inX & 0x7);
if (!variant) {
for (outX = 0; outX < end; ++outX) {
BACKGROUND_DRAW_PIXEL_16_NORMAL;
}
} else {
for (outX = 0; outX < end; ++outX) {
BACKGROUND_DRAW_PIXEL_16_VARIANT;
}
} }
} else { } else {
for (outX = 0; outX < end; ++outX) { if (!variant) {
BACKGROUND_DRAW_PIXEL_16_VARIANT; for (outX = end; outX--;) {
BACKGROUND_DRAW_PIXEL_16_NORMAL;
}
} else {
for (outX = end; outX--;) {
BACKGROUND_DRAW_PIXEL_16_VARIANT;
}
} }
} }
} else { } else {
// TODO: hflip
charBase = ((background->charBase + (mapData.tile << 6)) >> 2) + (localY << 1);
outX = 0;
int end2 = end - 4;
int shift = inX & 0x3;
if (end2 > 0) {
tileData = ((uint32_t*)renderer->d.vram)[charBase];
tileData >>= 8 * shift;
shift = 0;
if (!variant) {
for (; outX < end2; ++outX) {
BACKGROUND_DRAW_PIXEL_256_NORMAL;
}
} else {
for (; outX < end2; ++outX) {
BACKGROUND_DRAW_PIXEL_256_VARIANT;
}
}
}
tileData = ((uint32_t*)renderer->d.vram)[charBase + 1];
tileData >>= 8 * shift;
if (!variant) { if (!variant) {
for (outX = end; outX--;) { for (; outX < end; ++outX) {
BACKGROUND_DRAW_PIXEL_16_NORMAL; BACKGROUND_DRAW_PIXEL_256_NORMAL;
} }
} else { } else {
for (outX = end; outX--;) { for (; outX < end; ++outX) {
BACKGROUND_DRAW_PIXEL_16_VARIANT; BACKGROUND_DRAW_PIXEL_256_VARIANT;
} }
} }
} }
tileX = 30; tileX = 30;
BACKGROUND_TEXT_SELECT_CHARACTER; BACKGROUND_TEXT_SELECT_CHARACTER;
charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY; if (!background->multipalette) {
tileData = ((uint32_t*)renderer->d.vram)[charBase]; charBase = ((background->charBase + (mapData.tile << 5)) >> 2) + localY;
if (!mapData.hflip) { tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (!variant) { if (!mapData.hflip) {
for (outX = VIDEO_HORIZONTAL_PIXELS - 8 + end; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) { if (!variant) {
BACKGROUND_DRAW_PIXEL_16_NORMAL; for (outX = VIDEO_HORIZONTAL_PIXELS - 8 + end; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
BACKGROUND_DRAW_PIXEL_16_NORMAL;
}
} else {
for (outX = VIDEO_HORIZONTAL_PIXELS - 8 + end; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
BACKGROUND_DRAW_PIXEL_16_VARIANT;
}
} }
} else { } else {
for (outX = VIDEO_HORIZONTAL_PIXELS - 8 + end; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) { tileData >>= 4 * end;
BACKGROUND_DRAW_PIXEL_16_VARIANT; if (!variant) {
for (outX = VIDEO_HORIZONTAL_PIXELS - 1; outX > VIDEO_HORIZONTAL_PIXELS - 8; --outX) {
BACKGROUND_DRAW_PIXEL_16_NORMAL;
}
} else {
for (outX = VIDEO_HORIZONTAL_PIXELS - 1; outX > VIDEO_HORIZONTAL_PIXELS - 8; --outX) {
BACKGROUND_DRAW_PIXEL_16_VARIANT;
}
} }
} }
} else { } else {
tileData >>= 4 * end; // TODO: hflip
charBase = ((background->charBase + (mapData.tile << 6)) >> 2) + (localY << 1);
outX = VIDEO_HORIZONTAL_PIXELS - 8 + end;
int end2 = 4 - end;
if (end2 > 0) {
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (!variant) {
for (; outX < VIDEO_HORIZONTAL_PIXELS - end2; ++outX) {
BACKGROUND_DRAW_PIXEL_256_NORMAL;
}
} else {
for (; outX < VIDEO_HORIZONTAL_PIXELS - end2; ++outX) {
BACKGROUND_DRAW_PIXEL_256_VARIANT;
}
}
++charBase;
}
tileData = ((uint32_t*)renderer->d.vram)[charBase];
if (!variant) { if (!variant) {
for (outX = VIDEO_HORIZONTAL_PIXELS - 1; outX > VIDEO_HORIZONTAL_PIXELS - 8; --outX) { for (; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
BACKGROUND_DRAW_PIXEL_16_NORMAL; BACKGROUND_DRAW_PIXEL_256_NORMAL;
} }
} else { } else {
for (outX = VIDEO_HORIZONTAL_PIXELS - 1; outX > VIDEO_HORIZONTAL_PIXELS - 8; --outX) { for (; outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
BACKGROUND_DRAW_PIXEL_16_VARIANT; BACKGROUND_DRAW_PIXEL_256_VARIANT;
} }
} }
} }