From: notaz <notasas@gmail.com>
Date: Tue, 21 Dec 2010 11:53:31 +0000 (+0200)
Subject: hack: use simple GTE division
X-Git-Tag: r1~15
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=commitdiff_plain;h=a2544c926e9f382d57614ba2594ede0f56f4a108;ds=sidebyside

hack: use simple GTE division

that large table was slow, probably because of dcache trashing.
---

diff --git a/libpcsxcore/gte.c b/libpcsxcore/gte.c
index 72210d34..00e79544 100644
--- a/libpcsxcore/gte.c
+++ b/libpcsxcore/gte.c
@@ -348,6 +348,16 @@ void gteSWC2() {
 	psxMemWrite32(_oB_, MFC2(_Rt_));
 }
 
+#define DIVIDE DIVIDE_
+static u32 DIVIDE_(s16 n, u16 d) {
+	if (n >= 0 && n < d * 2) {
+		s32 n_ = n;
+		return ((n_ << 16) + d / 2) / d;
+		//return (u32)((float)(n_ << 16) / (float)d + (float)0.5);
+	}
+	return 0xffffffff;
+}
+
 void gteRTPS() {
 	int quotient;