Hi Helge,
On 5/24/21 10:23 PM, Helge Deller wrote:
> The CDE desktop on HP-UX 10 shows wrongly rendered pixels when the local
> screen
> menu is closed. This bug was introduced by commit c7050f3f167b
> ("hw/display/artist: Refactor x/y coordination extraction") which converted
> the
> coordinate extraction in artist_vram_read() to use the ADDR_TO_X and ADDR_TO_Y
> macros, but forgot to right-shift the address by 2 as it was done before.
OK, but there is a similar issue in artist_vram_write(), right?
>
> Signed-off-by: Helge Deller <del...@gmx.de>
> Fixes: c7050f3f167b ("hw/display/artist: Refactor x/y coordination
> extraction")
> Cc: Philippe Mathieu-Daudé <f4...@amsat.org>
> Cc: Richard Henderson <richard.hender...@linaro.org>
> Cc: Sven Schnelle <sv...@stackframe.org>
> Cc: qemu-sta...@nongnu.org
>
> diff --git a/hw/display/artist.c b/hw/display/artist.c
> index ed0e637f25..34efd3a565 100644
> --- a/hw/display/artist.c
> +++ b/hw/display/artist.c
> @@ -1233,8 +1233,8 @@ static uint64_t artist_vram_read(void *opaque, hwaddr
> addr, unsigned size)
> return 0;
> }
>
> - posy = ADDR_TO_Y(addr);
> - posx = ADDR_TO_X(addr);
> + posy = ADDR_TO_Y(addr >> 2);
> + posx = ADDR_TO_X(addr >> 2);
>
> if (posy > buf->height || posx > buf->width) {
> return 0;
>
