From: Toni Wilen <twilen@winuae.net>
Date: Sun, 10 Dec 2017 16:52:30 +0000 (+0200)
Subject: Do not wait for blitter if blit size is too large.
X-Git-Tag: 3600~39
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=508265be91f83fa86ce197c506609af8f067b93e;p=francis%2Fwinuae.git

Do not wait for blitter if blit size is too large.
---

diff --git a/blitter.cpp b/blitter.cpp
index 1b032a4e..914dbaed 100644
--- a/blitter.cpp
+++ b/blitter.cpp
@@ -1469,6 +1469,15 @@ static bool waitingblits (void)
 {
 	static int warned = 10;
 
+	// crazy large blit size? don't wait.. (Vital / Mystic)
+	if (blt_info.vblitsize * blt_info.hblitsize * 2 > 2 * 1024 * 1024) {
+		if (warned) {
+			warned--;
+			write_log(_T("Crazy waiting_blits detected PC=%08x W=%d H=%d\n"), M68K_GETPC, blt_info.vblitsize, blt_info.hblitsize);
+		}
+		return false;
+	}
+
 	bool waited = false;
 	while (bltstate != BLT_done && dmaen (DMA_BLITTER)) {
 		waited = true;