Replace ROW_PITCH with BUFFER_WIDTH

Source/asm_trans_rect.inc

@@ -15,7 +15,7 @@
 __asm {
 	mov edi, gpBuffer
 	; origin is at 64,160
-	add edi, (160 + TRANS_RECT_Y + TRANS_RECT_HEIGHT - 1) * ROW_PITCH + 64 + TRANS_RECT_X
+	add edi, (160 + TRANS_RECT_Y + TRANS_RECT_HEIGHT - 1) * BUFFER_WIDTH + 64 + TRANS_RECT_X
 	xor eax, eax
 	mov edx, TRANS_RECT_HEIGHT >> 1
 yloop:
@@ -27,13 +27,13 @@ x0loop:
 #if (TRANS_RECT_WIDTH & 1)
 	stosb
 #endif
-	sub edi, ROW_PITCH + TRANS_RECT_WIDTH
+	sub edi, BUFFER_WIDTH + TRANS_RECT_WIDTH
 	mov ecx, TRANS_RECT_WIDTH >> 1
 x1loop:
 	inc edi
 	stosb
 	loop x1loop
-	sub edi, ROW_PITCH + (TRANS_RECT_WIDTH & ~1)
+	sub edi, BUFFER_WIDTH + (TRANS_RECT_WIDTH & ~1)
 	dec edx
 	jnz yloop
 #if (TRANS_RECT_HEIGHT & 1)
@@ -59,12 +59,12 @@ x2loop:
 #if (TRANS_RECT_WIDTH & 1)
 		*pix++ = 0;
 #endif
-		pix -= ROW_PITCH + TRANS_RECT_WIDTH;
+		pix -= BUFFER_WIDTH + TRANS_RECT_WIDTH;
 		for (col = TRANS_RECT_WIDTH >> 1; col != 0; col--) {
 			pix++;
 			*pix++ = 0;
 		}
-		pix -= ROW_PITCH + (TRANS_RECT_WIDTH & ~1);
+		pix -= BUFFER_WIDTH + (TRANS_RECT_WIDTH & ~1);
 	}
 #if (TRANS_RECT_HEIGHT & 1)
 	for (col = TRANS_RECT_WIDTH >> 1; col != 0; col--) {

defs.h

@@ -4,7 +4,6 @@
 #define DMAXY					40
 
 #define LIGHTSIZE				6912 // 27 * 256
-#define ROW_PITCH				768
 
 // must be unsigned to generate unsigned comparisons with pnum
 #define MAX_PLRS				4