M CHANGES → CHANGES

@@ -94,6 +94,7 @@ - GBA DMA: Fix case where DMAs could get misaligned (fixes mgba.io/i/1092)
  - GBA Memory: Fix open bus from IWRAM (fixes mgba.io/i/1575)
  - GBA Video: Fix OpenGL renderer 512x512 backgrounds (fixes mgba.io/i/1572)
  - GBA Video: Fix BLDY for semitransparent sprite on non-target-2 backgrounds
+ - GBA Video: Fix effects blending improperly in some non-last windows
 Other fixes:
  - 3DS: Fix screen darkening (fixes mgba.io/i/1562)
  - Core: Fix uninitialized memory issues with graphics caches

M src/gba/renderers/video-software.c → src/gba/renderers/video-software.c

@@ -652,10 +652,11 @@ match |= FLAG_OBJWIN;
 			}
 		}
 		for (w = 0; w < softwareRenderer->nWindows; ++w) {
+			int end = softwareRenderer->windows[w].endX;
 			if (!GBAWindowControlIsBlendEnable(softwareRenderer->windows[w].control.packed)) {
+				x = end;
 				continue;
 			}
-			int end = softwareRenderer->windows[w].endX;
 			if (softwareRenderer->blendEffect == BLEND_DARKEN) {
 				for (; x < end; ++x) {
 					uint32_t color = softwareRenderer->row[x];