From 6762c39551ded059450d17d8bb0cb80642c8aaab Mon Sep 17 00:00:00 2001
From: "John Wilbert M. Villamor" <lameguy64@gmail.com>
Date: Sat, 25 Jul 2020 08:27:49 +0800
Subject: Added multi-session CD support, fixed infinite loop bug in
 CdReadDir(), updated CD media change detection logic, replaced version
 numbers with SVN revision numbers in documentation

---
 libpsn00b/psxgte/scalematrixl.s | 68 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 libpsn00b/psxgte/scalematrixl.s

diff --git a/libpsn00b/psxgte/scalematrixl.s b/libpsn00b/psxgte/scalematrixl.s
new file mode 100644
index 0000000..014b85a
--- /dev/null
+++ b/libpsn00b/psxgte/scalematrixl.s
@@ -0,0 +1,68 @@
+.set noreorder
+
+.include "gtereg.h"
+.include "inline_s.h"
+
+.section .text
+
+
+.global ScaleMatrixL
+.type ScaleMatrixL, @function
+ScaleMatrixL:
+
+	lwc2	C2_IR0,	0($a1)			# X
+
+	lh		$v0, 2*(0+(3*0))($a0)
+	lh		$v1, 2*(1+(3*0))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(2+(3*0))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(0+(3*0))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(1+(3*0))($a0)
+	sh		$v0, 2*(2+(3*0))($a0)
+
+	lwc2	C2_IR0,	4($a1)			# Y
+
+	lh		$v0, 2*(0+(3*1))($a0)
+	lh		$v1, 2*(1+(3*1))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(2+(3*1))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(0+(3*1))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(1+(3*1))($a0)
+	sh		$v0, 2*(2+(3*1))($a0)
+
+	lwc2	C2_IR0,	8($a1)			# Z
+
+	lh		$v0, 2*(0+(3*2))($a0)
+	lh		$v1, 2*(1+(3*2))($a0)
+	mtc2	$v0, C2_IR1
+	lh		$v0, 2*(2+(3*2))($a0)
+	mtc2	$v1, C2_IR2
+	mtc2	$v0, C2_IR3
+
+	nGPF(1)
+
+	mfc2	$v0, C2_IR1
+	mfc2	$v1, C2_IR2
+	sh		$v0, 2*(0+(3*2))($a0)
+	mfc2	$v0, C2_IR3
+	sh		$v1, 2*(1+(3*2))($a0)
+	sh		$v0, 2*(2+(3*2))($a0)
+
+	jr		$ra
+	move	$v0, $a0
-- 
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