[Mesa-dev] [PATCH v14 13/36] gallium: introduce format modifier querying

[Lucas Stach]

Am Dienstag, den 30.05.2017, 17:23 +0530 schrieb Varad Gautam:
> From: Varad Gautam <varad.gautam at collabora.com>
> 
> format modifiers tokens are driver specific, and hence, need to come
> in from the driver. this allows drivers to be queried for supported
> format modifiers for EGL_EXT_image_dma_buf_import_modifiers.
> 
> v2: rebase to master.
> v3: drivers must return false on query failure.
> v4: use pscreen->is_format_supported instead of adding a separate
>     format query handle, remove PIPE_CAP_QUERY_DMABUF_ATTRIBS.
>     (Lucas Stach)
> v5: add external_only parameter.
> 
> Signed-off-by: Varad Gautam <varad.gautam at collabora.com>
> Cc: Lucas Stach <l.stach at pengutronix.de>

Reviewed-by: Lucas Stach <l.stach at pengutronix.de>

> ---
>  src/gallium/include/pipe/p_screen.h | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
> index 5102827..65e954a 100644
> --- a/src/gallium/include/pipe/p_screen.h
> +++ b/src/gallium/include/pipe/p_screen.h
> @@ -343,6 +343,20 @@ struct pipe_screen {
>                             struct pipe_screen *,
>                             const struct pipe_resource *templat,
>                             const uint64_t *modifiers, int count);
> +
> +   /**
> +    * Get supported modifiers for a format.
> +    * If \p max is 0, the total number of supported modifiers for the supplied
> +    * format is returned in \p count, with no modification to \p modifiers.
> +    * Otherwise, \p modifiers is filled with upto \p max supported modifier
> +    * codes, and \p count with the number of modifiers copied.
> +    * The \p external_only array is used to return whether the format and
> +    * modifier combination can only be used with an external texture target.
> +    */
> +   void (*query_dmabuf_modifiers)(struct pipe_screen *screen,
> +                                  enum pipe_format format, int max,
> +                                  uint64_t *modifiers,
> +                                  unsigned int *external_only, int *count);
>  };
>  
>