@@ -103,13 +103,11 @@ ppu_write(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)

 void

 ppu_blit(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, Uint8 flipx, Uint8 flipy, Uint8 twobpp)

 {

-	Uint8 opaque = blending[4][color];

-	Uint16 v, h;

-	for(v = 0; v < 8; ++v)

-		for(h = 0; h < 8; ++h) {

-			Uint8 ch = (sprite[v + 0] >> (7 - h)) & 0x1;

-			if(twobpp)

-				ch |= ((sprite[v + 8] >> (7 - h)) & 0x1) << 1;

+	int v, h, opaque = blending[4][color];

+	for(v = 0; v < 8; ++v) {

+		int c = sprite[v] | (twobpp ? sprite[v + 8] : 0) << 8;

+		for(h = 7; h >= 0; --h, c >>= 1) {

+			Uint8 ch = (c & 1) | ((c >> 7) & 2);

 			if(opaque || ch)

 				ppu_write(p,

 					layer,

@@ -117,6 +115,7 @@ ppu_blit(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color, U

 					y + (flipy ? 7 - v : v),

 					blending[ch][color]);

 		}

+	}

 }

 void