[Mesa-dev] [PATCH] r600g: Change default behaviour for undefined COLOR0

[Marek Olšák]

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Sun, Apr 3, 2016 at 9:53 PM, Axel Davy <axel.davy at ens.fr> wrote:
> d3d 9 needs COLOR0 to be 1.0 on all channels when
> undefined. 0.0 for the others is fine.
> GL behaviour is undefined.
>
> Signed-off-by: Axel Davy <axel.davy at ens.fr>
> ---
>  src/gallium/drivers/r600/evergreen_state.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
> index 6595267..4da333a 100644
> --- a/src/gallium/drivers/r600/evergreen_state.c
> +++ b/src/gallium/drivers/r600/evergreen_state.c
> @@ -3033,6 +3033,10 @@ void evergreen_update_ps_state(struct pipe_context *ctx, struct r600_pipe_shader
>                 if (sid) {
>                         tmp = S_028644_SEMANTIC(sid);
>
> +                       /* D3D 9 behaviour. GL is undefined */
> +                       if (rshader->input[i].name == TGSI_SEMANTIC_COLOR && rshader->input[i].sid == 0)
> +                               tmp |= S_028644_DEFAULT_VAL(3);
> +
>                         if (rshader->input[i].name == TGSI_SEMANTIC_POSITION ||
>                                 rshader->input[i].interpolate == TGSI_INTERPOLATE_CONSTANT ||
>                                 (rshader->input[i].interpolate == TGSI_INTERPOLATE_COLOR &&
> --
> 2.7.3
>
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