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hack: use simple GTE division
author
notaz
<notasas@gmail.com>
Tue, 21 Dec 2010 11:53:31 +0000
(13:53 +0200)
committer
notaz
<notasas@gmail.com>
Tue, 21 Dec 2010 11:53:31 +0000
(13:53 +0200)
that large table was slow, probably because of dcache trashing.
libpcsxcore/gte.c
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diff --git
a/libpcsxcore/gte.c
b/libpcsxcore/gte.c
index
72210d3
..
00e7954
100644
(file)
--- 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;