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GBA Video: Minor sprite optimizations

This commit is contained in:
Jeffrey Pfau 2015-09-20 21:25:51 -07:00
parent 3b8639aa05
commit 7f2ab299f5
1 changed files with 5 additions and 2 deletions
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7
src/gba/renderers/software-obj.c
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@ -42,6 +42,8 @@
#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
unsigned tileData; \
unsigned widthMask = ~(width - 1); \
unsigned heightMask = ~(height - 1); \
for (; outX < x + totalWidth && outX < end; ++outX, ++inX) { \
if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
continue; \
@ -51,7 +53,7 @@
int localX = (xAccum >> 8) + (width >> 1); \
int localY = (yAccum >> 8) + (height >> 1); \
\
if (localX < 0 || localX >= width || localY < 0 || localY >= height) { \
if (localX & widthMask || localY & heightMask) { \
continue; \
} \
\
@ -96,7 +98,7 @@
}
#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width : 0x80) + (localY & 0x7) * 8;
#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * stride + (localY & 0x7) * 8;
#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFE), vramBase); \
@ -168,6 +170,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
}
int inY = y - (int) GBAObjAttributesAGetY(sprite->a);
int stride = GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width : 0x80;
uint32_t current;
if (GBAObjAttributesAIsTransformed(sprite->a)) {