shithub: qk1

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fences: don't modify z-buffer unless drawing as opaque

--- a/d_scan.c

+++ b/d_scan.c

@@ -220,9 +220,10 @@

 #define WRITEFENCE(i) do{ \

 	fencepix = *(pbase + (s >> 16) + (t >> 16) * cachewidth); \

-	if (pz[i] <= (izi >> 16) && fencepix != 255){ \

+	if (fencepix != 255 && pz[i] <= (izi >> 16)){ \

 		pdest[i] = blendalpha(fencepix, pdest[i], alpha); \

-		pz[i] = (izi >> 16); \

+		if(alpha == 255) \

+			pz[i] = (izi >> 16); \

 	} \

 	izi += izistep; \

 	s += sstep; \