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Implement character mapping

This commit is contained in:
Jeffrey Pfau 2013-04-28 01:43:39 -07:00
parent 8072ff7d2c
commit 5f6b57734d
1 changed files with 2 additions and 2 deletions
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4
src/gba/renderers/video-software.c
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@ -470,7 +470,7 @@ static void _drawSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj
inY = height - inY - 1;
}
unsigned charBase = BASE_TILE + sprite->tile * 0x20;
unsigned yBase = (inY & ~0x7) * 0x80 + (inY & 0x7) * 4;
unsigned yBase = (inY & ~0x7) * (renderer->dispcnt.objCharacterMapping ? width >> 1 : 0x80) + (inY & 0x7) * 4;
for (int outX = x >= 0 ? x : 0; outX < x + width && outX < VIDEO_HORIZONTAL_PIXELS; ++outX) {
int inX = outX - x;
if (sprite->hflip) {
@ -523,7 +523,7 @@ static void _drawTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, st
continue;
}
unsigned yBase = (localY & ~0x7) * 0x80 + (localY & 0x7) * 4;
unsigned yBase = (localY & ~0x7) * (renderer->dispcnt.objCharacterMapping ? width >> 1 : 0x80) + (localY & 0x7) * 4;
unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
uint16_t tileData = renderer->d.vram[(yBase + charBase + xBase) >> 1];
tileData = (tileData >> ((localX & 3) << 2)) & 0xF;