From 6f1c83849629051a02e04fe113b3737aa3db4d9c Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Thu, 31 Oct 2019 18:14:04 +0100
Subject: [PATCH] The S3 cards now no longer do mixing or ROP's for PIX_TRANS
 reads.

---
 src/video/vid_s3.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/video/vid_s3.c b/src/video/vid_s3.c
index c0d0d0b03..7915e5544 100644
--- a/src/video/vid_s3.c
+++ b/src/video/vid_s3.c
@@ -8,7 +8,7 @@
  *
  *		S3 emulation.
  *
- * Version:	@(#)vid_s3.c	1.0.27	2019/10/30
+ * Version:	@(#)vid_s3.c	1.0.28	2019/10/31
  *
  * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
  *		Miran Grca, <mgrca8@gmail.com>
@@ -2660,7 +2660,8 @@ void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat
 
 					if (s3_cpu_dest(s3)) {
 						for (i = 0; i <= s3->bpp; i++)
-							s3->accel.pix_trans[read + i] = (dest_dat >> (i << 3)) & 0xff;
+							s3->accel.pix_trans[read + i] = (src_dat >> (i << 3)) & 0xff;
+							/* Yes, src_dat is correct, there is no mixing/ROP's done on PIX_TRANS reads. */
 					} else
 						WRITE(s3->accel.dest + s3->accel.cx);
 				}