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artist: Allow to turn cursor on or off 

Bit 0x80 in the cursor_cntrl register specifies if the cursor
should be visible. Prevent rendering the cursor if it's invisible.

Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Helge Deller 2022-05-11 12:28:30 +02:00
parent 482afe020b
commit a377b574eb
1 changed files with 14 additions and 0 deletions
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14
hw/display/artist.c
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@ -353,10 +353,20 @@ static void artist_get_cursor_pos(ARTISTState *s, int *x, int *y)
}
}
static inline bool cursor_visible(ARTISTState *s)
{
/* cursor is visible if bit 0x80 is set in cursor_cntrl */
return s->cursor_cntrl & 0x80;
}
static void artist_invalidate_cursor(ARTISTState *s)
{
int x, y;
if (!cursor_visible(s)) {
return;
}
artist_get_cursor_pos(s, &x, &y);
artist_invalidate_lines(&s->vram_buffer[ARTIST_BUFFER_AP],
y, s->cursor_height);
@ -1218,6 +1228,10 @@ static void artist_draw_cursor(ARTISTState *s)
struct vram_buffer *cursor0, *cursor1 , *buf;
int cx, cy, cursor_pos_x, cursor_pos_y;
if (!cursor_visible(s)) {
return;
}
cursor0 = &s->vram_buffer[ARTIST_BUFFER_CURSOR1];
cursor1 = &s->vram_buffer[ARTIST_BUFFER_CURSOR2];
buf = &s->vram_buffer[ARTIST_BUFFER_AP];