GBA Video: Fix sprites in modes 3 - 5 when character mapping is disabled

CHANGES

@@ -64,6 +64,7 @@ Bugfixes:
  - Qt: Fix a missing va_end call in the log handler lambda within the GameController constructor
  - GBA Cheats: Fix Pro Action Replay and GameShark issues when used together
  - Qt: Fix analog buttons not getting unmapped
+ - GBA Video: Fix sprites in modes 3 - 5 when character mapping is disabled
 Misc:
  - Qt: Handle saving input settings better
  - Debugger: Free watchpoints in addition to breakpoints

src/gba/renderers/software-obj.c

@@ -114,7 +114,7 @@ int GBAVideoSoftwareRendererPreprocessSprite(struct GBAVideoSoftwareRenderer* re
 	flags |= FLAG_OBJWIN * (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_OBJWIN);
 	int32_t x = GBAObjAttributesBGetX(sprite->b) << 23;
 	x >>= 23;
-	uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
+	uint16_t* vramBase = &renderer->d.vram[(GBARegisterDISPCNTGetMode(renderer->dispcnt) < 3 || GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? BASE_TILE : BASE_TILE_BITMAP) >> 1];
 	unsigned charBase = GBAObjAttributesCGetTile(sprite->c) * 0x20;
 	int variant = renderer->target1Obj && GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
 	if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT) {

src/gba/video.h

@@ -40,7 +40,8 @@ enum {
 
 	REG_DISPSTAT_MASK = 0xFF38,
 
-	BASE_TILE = 0x00010000
+	BASE_TILE = 0x00010000,
+	BASE_TILE_BITMAP = 0x00014000
 };
 
 enum ObjMode {