From: Toni Wilen <twilen@winuae.net>
Date: Fri, 13 Jun 2025 14:58:22 +0000 (+0300)
Subject: HB start/end position used by (for example) genlock now gets correct values.
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=280cbf8430c833d82683bc8569f497c4c0aa01a6;p=francis%2Fwinuae.git

HB start/end position used by (for example) genlock now gets correct values.
---

diff --git a/drawing.cpp b/drawing.cpp
index 9feca7f7..c6f8ca0d 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -418,6 +418,7 @@ static bool denise_strlong_unalign, strlong_emulation;
 static int denise_phbstrt, denise_phbstop, denise_phbstrt_lores, denise_phbstop_lores;
 static int linear_denise_vbstrt, linear_denise_vbstop;
 static int linear_denise_hbstrt, linear_denise_hbstop;
+static int linear_denise_frame_hbstrt, linear_denise_frame_hbstop;
 static int denise_visible_lines, denise_visible_lines_counted;
 static uae_u16 hbstrt_denise_reg, hbstop_denise_reg;
 static uae_u16 fmode_denise, denise_bplfmode, denise_sprfmode;
@@ -2382,11 +2383,8 @@ void get_mode_blanking_limits(int *phbstop, int *phbstrt, int *pvbstop, int *pvb
 {
 	*pvbstop = linear_denise_vbstrt;
 	*pvbstrt = linear_denise_vbstop;
-	int stop = linear_denise_hbstop;
-	int strt = linear_denise_hbstrt;
-	int len = (current_linear_hpos << 3) - (stop - strt);
-	*phbstop = stop;
-	*phbstrt = stop + len;
+	*phbstop = linear_denise_frame_hbstop;
+	*phbstrt = linear_denise_frame_hbstrt;
 }
 
 static void setup_brdblank(void)
@@ -5742,6 +5740,11 @@ static void draw_denise_line(int gfx_ypos, enum nln_how how, uae_u32 linecnt, in
 		ls->lol = lol;
 	}
 
+	if (linear_denise_hbstrt >= 0 && linear_denise_hbstop >= 0 && !denise_vblank_active) {
+		linear_denise_frame_hbstrt = linear_denise_hbstrt & ~15;
+		linear_denise_frame_hbstop = linear_denise_hbstop & ~15;
+	}
+
 	if (refresh_indicator_buffer && buf1t) {
 		static const int refresh_indicator_colors[] = { 0x777, 0x0f0, 0x00f, 0xff0, 0xf0f };
 		const int indicator_width = 16;