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GBA Video: Fix rare regression blending semitransparent sprites (fixes #1876)

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This commit is contained in:
Vicki Pfau 2020-09-07 01:20:22 -07:00
parent d1178689cb
commit 17ca8f524a
9 changed files with 2 additions and 1 deletions
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@ -43,6 +43,7 @@ Emulation fixes:
- GBA Video: Invalidate map cache when modifying BGCNT (fixes mgba.io/i/1846)
- GBA Video: Don't draw sprites using unmapped VRAM in GL renderer (fixes mgba.io/i/1865)
- GBA Video: Implement green swap (fixes mgba.io/i/1609)
- GBA Video: Fix rare regression blending semitransparent sprites (fixes mgba.io/i/1876)
- SM83: Emulate HALT bug
Other fixes:
- 3DS: Redo video sync to be more precise

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cinema/gba/blend/sma2-semitrans/test.mvl Normal file
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src/gba/renderers/software-obj.c
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@ -162,7 +162,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
}
int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && GBAWindowControlGetBlendEnable(renderer->objwin.packed) != GBAWindowControlIsBlendEnable(renderer->currentWindow.packed);
int variant = (renderer->target1Obj || GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT) &&
int variant = renderer->target1Obj &&
GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) &&
(renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT || (renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || objwinSlowPath) {