From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Sat, 7 Oct 2017 22:54:43 +0000 (+0200)
Subject: A sign fix in the FDCT.
X-Git-Url: https://git.sesse.net/?p=narabu;a=commitdiff_plain;h=873d453bb62b954ba959b70d98056da4ff150059

A sign fix in the FDCT.
---

diff --git a/coded.dat b/coded.dat
index a811389..e94ba8c 100644
Binary files a/coded.dat and b/coded.dat differ
diff --git a/encoder.shader b/encoder.shader
index c49a3fe..7f0822a 100644
--- a/encoder.shader
+++ b/encoder.shader
@@ -82,9 +82,9 @@ void dct_1d(inout float y0, inout float y1, inout float y2, inout float y3, inou
 	const float p4_6 = p2_6 * a4 + (p2_4 - p2_6) * a5;
 
 	// phase 5
-	const float p5_2 = p4_2 + p2_3;
-	const float p5_3 = p4_2 - p2_3;
-	const float p5_5 = p4_5 + p1_7;
+	const float p5_2 = p2_3 + p4_2;
+	const float p5_3 = p2_3 - p4_2;
+	const float p5_5 = p1_7 + p4_5;
 	const float p5_7 = p1_7 - p4_5;
 	
 	// phase 6