display-cg: fix a bug in bopti r5g6b6 for very thin images

2021-06-02 11:22:29 +02:00 · 2021-06-02 11:22:29 +02:00 · a9f6c4b622
parent 7b40e1e0d0
commit a9f6c4b622
1 changed files with 3 additions and 1 deletions
--- a/src/render-cg/bopti-asm.s
+++ b/src/render-cg/bopti-asm.s
@ -66,6 +66,8 @@ _bopti_r5g6b5:
 	add	r3, r5

 	mov	r6, r10
+	tst	r6, r6
+	bt	.r5g6b5_y_end

 .r5g6b5_x:
 	# Copy longwords
@ -76,7 +78,7 @@ _bopti_r5g6b5:
 	bf.s	.r5g6b5_x
 	add	#4, r5

-# -
+.r5g6b5_y_end:

 	add	r8, r4
 	dt	r7