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[v3,10/13] macfb: fix up 1-bit pixel encoding

Message ID 20211007093407.3329-11-mark.cave-ayland@ilande.co.uk
State New
Headers show
Series macfb: fixes for booting MacOS | expand

Commit Message

Mark Cave-Ayland Oct. 7, 2021, 9:34 a.m. UTC 
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>
---
 hw/display/macfb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index 2759fb5e34..e49c8b6f4b 100644
--- 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);