[Mesa-dev] Wrong colors in 3D apps on big-endian systems

[Michel Dänzer]

On Fre, 2014-03-07 at 08:54 +0100, Christian Zigotzky wrote:
> Hi List,
> 
> There are any problems with false colors since Mesa 9.2 on big-endian 
> (PowerPC) systems (Screenshot: 
> https://bugs.freedesktop.org/attachment.cgi?id=91566). I've created the 
> bug report 72877 (https://bugs.freedesktop.org/show_bug.cgi?id=72877). 
> I've figured out that the following line in 
> "src/gallium/drivers/r600/evergreen_state.c" the problem is.
> 
> case V_028C70_COLOR_8_8_8_8:
> 
> When I comment out this case then the colors are to 99% right. But if I 
> comment out the following lines then all colors are correct.
> 
>      /* 32-bit buffers. */
>              //case PIPE_FORMAT_A8B8G8R8_SRGB:
>              //case PIPE_FORMAT_A8B8G8R8_UNORM:
>              case PIPE_FORMAT_A8R8G8B8_UNORM:
>              //case PIPE_FORMAT_B8G8R8A8_SRGB:
>              //case PIPE_FORMAT_B8G8R8A8_UNORM:
>              //case PIPE_FORMAT_B8G8R8X8_UNORM:
>              //case PIPE_FORMAT_R8G8B8A8_SNORM:
>              //case PIPE_FORMAT_R8G8B8A8_UNORM:
>              //case PIPE_FORMAT_R8G8B8X8_UNORM:
>              //case PIPE_FORMAT_R8G8B8X8_SNORM:
>              //case PIPE_FORMAT_R8G8B8X8_SRGB:
>              //case PIPE_FORMAT_R8G8B8X8_UINT:
>              //case PIPE_FORMAT_R8G8B8X8_SINT:
>              //case PIPE_FORMAT_R8SG8SB8UX8U_NORM:
>              //case PIPE_FORMAT_X8B8G8R8_UNORM:
>              //case PIPE_FORMAT_X8R8G8B8_UNORM:
>              //case PIPE_FORMAT_R8G8B8_UNORM:
>              //case PIPE_FORMAT_R8G8B8A8_SINT:
>              //case PIPE_FORMAT_R8G8B8A8_UINT:
>                      return V_028C70_COLOR_8_8_8_8;
> 
> Neverball, Glxgears, and SuperTuxKart works fine with the right colors.
> 
> Screenshots: 
> http://forum.hyperion-entertainment.biz/viewtopic.php?f=35&t=2137&p=26037#p26037
> 
> The patched Mesa 10.0.3 and 10.1.0 works well on Debian Sid and on 
> Lubuntu 14.04.
> 
> Could you patch the official Mesa, please?

You sent this exact same e-mail to me in private, and I explained to you
why this is not a proper solution, and how you could go about finding a
proper solution. Why did you just re-send your e-mail here unchanged,
without any mention of the additional information I gave you?


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer