From 9738af17571f67f850beffb10170bf419c1ce257 Mon Sep 17 00:00:00 2001 From: tomcw Date: Sun, 20 Nov 2022 20:54:15 +0000 Subject: [PATCH] Video rendering: fix glitch when in non-'50% Scan lines' mode. (Fixes #1143) --- source/NTSC.cpp | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/source/NTSC.cpp b/source/NTSC.cpp index aa206104..b0ccec8a 100644 --- a/source/NTSC.cpp +++ b/source/NTSC.cpp @@ -660,7 +660,11 @@ inline void updateVideoScannerHorzEOLSimple() { if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz) { - *(uint32_t*)g_pVideoAddress++ = 0 | ALPHA32_MASK; // VT_COLOR_IDEALIZED: TEXT -> HGR can leave junk on RHS (GH#1106) + if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY) // Only write to video memory when in visible part of display (GH#1143) + { + *(uint32_t*)g_pVideoAddress = 0 | ALPHA32_MASK; // VT_COLOR_IDEALIZED: TEXT -> HGR can leave junk on RHS (GH#1106) + *(getScanlineNextInbetween()) = 0 | ALPHA32_MASK; // ...and clear junk on RHS for non-'50% Scan lines' + } g_nVideoClockHorz = 0;