macfb: fix up 1-bit pixel encoding

The MacOS driver expects the RGB values for the pixel to be in entries 0 and 1
of the colour palette.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211007221253.29024-11-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index 2759fb5e34d1da5b8e819999821183733c3c26ce..e49c8b6f4b5226d8ee27957fc4240b6ce70e8294 100644 (file)
--- a/hw/display/macfb.c
+++ b/hw/display/macfb.c
@@ -128,7 +128,9 @@ static void macfb_draw_line1(MacfbState *s, uint8_t *d, uint32_t addr,
     for (x = 0; x < width; x++) {
         int bit = x & 7;
         int idx = (macfb_read_byte(s, addr) >> (7 - bit)) & 1;
-        r = g = b  = ((1 - idx) << 7);
+        r = s->color_palette[idx * 3];
+        g = s->color_palette[idx * 3 + 1];
+        b = s->color_palette[idx * 3 + 2];
         addr += (bit == 7);
 
         *(uint32_t *)d = rgb_to_pixel32(r, g, b);