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GBA Video: Minor mode 2 optimization

This commit is contained in:
Jeffrey Pfau 2016-08-07 02:21:47 -07:00
parent 9f5f7a60c1
commit f5ee8330f7
1 changed files with 6 additions and 7 deletions
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13
src/gba/renderers/software-bg.c
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@ -22,8 +22,8 @@
#define MODE_2_MOSAIC(COORD) \
if (!mosaicWait) { \
COORD \
mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)]; \
pixelData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)]; \
mapData = screenBase[(localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)]; \
pixelData = charBase[(mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)]; \
\
mosaicWait = mosaicH; \
} else { \
@ -32,9 +32,8 @@
#define MODE_2_NO_MOSAIC(COORD) \
COORD \
mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)]; \
pixelData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
mapData = screenBase[(localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)]; \
pixelData = charBase[(mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
#define MODE_2_LOOP(MOSAIC, COORD, BLEND, OBJWIN) \
for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) { \
@ -71,8 +70,8 @@ void GBAVideoSoftwareRendererDrawBackgroundMode2(struct GBAVideoSoftwareRenderer
BACKGROUND_BITMAP_INIT;
uint32_t screenBase = background->screenBase;
uint32_t charBase = background->charBase;
uint8_t* screenBase = &((uint8_t*) renderer->d.vram)[background->screenBase];
uint8_t* charBase = &((uint8_t*) renderer->d.vram)[background->charBase];
uint8_t mapData;
uint8_t pixelData = 0;