# HG changeset patch
# User Laurens Holst <laurens.hg@grauw.nl>
# Date 1497113656 -7200
#      Sat Jun 10 18:54:16 2017 +0200
# Node ID 114ca88b773d863bee6ccd5f3b390b84e130ea38
# Parent  e1f527e2ab89dd25a67c7a1c101e07667c877fa5
SpanBuffer: Only support spans where x1 < x2.

Backout of changeset 2949fb9e533a.

diff --git a/src/SpanBuffer.asm b/src/SpanBuffer.asm
--- a/src/SpanBuffer.asm
+++ b/src/SpanBuffer.asm
@@ -33,23 +33,17 @@
 	dec h
 	ret
 
-; d = x1
-; e = x2
+; d = x
+; e = end x
 ; b = z
 ; c = color
 ; hl = this
-; Modifies: af, e, d
+; Modifies: af
 SpanBuffer_Insert: PROC
 	ld a,e
-	cp d
-	ret z
 	dec a
 	cp d
-	jr nc,NoSwap
-	inc d
-	ld e,d
-	ld d,a
-NoSwap:
+	call c,System_ThrowException
 	push bc
 	xor a
 StartLoop: