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GBA Video: Improve sprite cycle counting (fixes #1126)

This commit is contained in:
Vicki Pfau 2018-07-20 17:16:58 -07:00
parent 070f318c15
commit 4f246827a6
2 changed files with 4 additions and 3 deletions
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1
CHANGES
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@ -41,6 +41,7 @@ Bugfixes:
- GBA BIOS: Fix BitUnPack final byte
- GB I/O: DMA register is R/W
- GB Video: Fix SCX timing
- GBA Video: Improve sprite cycle counting (fixes mgba.io/i/1126)
Misc:
- GBA Timer: Use global cycles for timers
- GBA: Extend oddly-sized ROMs to full address space (fixes mgba.io/i/722)

6
src/gba/renderers/software-obj.c
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@ -193,7 +193,6 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
if (GBAObjAttributesAIsTransformed(sprite->a)) {
int totalWidth = width << GBAObjAttributesAGetDoubleSize(sprite->a);
int totalHeight = height << GBAObjAttributesAGetDoubleSize(sprite->a);
renderer->spriteCyclesRemaining -= 10;
struct GBAOAMMatrix mat;
LOAD_16(mat.a, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].a);
LOAD_16(mat.b, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].b);
@ -253,6 +252,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
if (outX < start || outX >= condition) {
return 0;
}
renderer->spriteCyclesRemaining -= 10;
if (!GBAObjAttributesAIs256Color(sprite->a)) {
palette = &palette[GBAObjAttributesCGetPalette(sprite->c) << 4];
@ -273,7 +273,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
SPRITE_TRANSFORMED_LOOP(256, NORMAL);
}
}
if (x + totalWidth > VIDEO_HORIZONTAL_PIXELS) {
if (end == VIDEO_HORIZONTAL_PIXELS && x + totalWidth > VIDEO_HORIZONTAL_PIXELS) {
renderer->spriteCyclesRemaining -= (x + totalWidth - VIDEO_HORIZONTAL_PIXELS) * 2;
}
} else {
@ -333,7 +333,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
SPRITE_NORMAL_LOOP(256, NORMAL);
}
}
if (x + width > VIDEO_HORIZONTAL_PIXELS) {
if (end == VIDEO_HORIZONTAL_PIXELS && x + width > VIDEO_HORIZONTAL_PIXELS) {
renderer->spriteCyclesRemaining -= x + width - VIDEO_HORIZONTAL_PIXELS;
}
}