Hi Dan,
On 19 May 2017 at 10:37, Daniel Stone <[email protected]> wrote:
> From: Varad Gautam <[email protected]>
>
> we currently ignore the plane count when converting from
> __DRI_IMAGE_FORMAT* tokens to __DRI_IMAGE_FOURCC* for multiplanar
> images, and only return the first plane's simplified fourcc.
>
> this adds a fourcc to __DRI_IMAGE_FORMAT_* mapping to dri, allowing
> us to return the correct fourcc format from DRIimage queries, and
> simplifies the multiplane import logic.
>
> Signed-off-by: Varad Gautam <[email protected]>
> Signed-off-by: Daniel Stone <[email protected]>
> ---
> src/gallium/state_trackers/dri/dri2.c | 288
> +++++++++++++++-------------
> src/gallium/state_trackers/dri/dri_screen.h | 13 ++
> 2 files changed, 168 insertions(+), 133 deletions(-)
>
> diff --git a/src/gallium/state_trackers/dri/dri2.c
> b/src/gallium/state_trackers/dri/dri2.c
> index ed6004f836..0c5783cbd3 100644
> --- a/src/gallium/state_trackers/dri/dri2.c
> +++ b/src/gallium/state_trackers/dri/dri2.c
> @@ -52,93 +52,133 @@
> #include "dri_query_renderer.h"
> #include "dri2_buffer.h"
>
> -static int convert_fourcc(int format, int *dri_components_p)
> +/* format list taken from intel_screen.c */
> +static struct image_format image_formats[] = {
Any reason why we don't move this to a common place - say dri_util.c
and reuse it in all the drivers?
Be that including nouveau_vieux and friends or not.
AFAICT this is a constant data - let's annotate it as such.
> +static struct image_format *
> +image_format_from_fourcc(int fourcc)
> {
> + struct image_format *f = NULL;
> +
Nit: drop the temporary variable and return directly? Same idea
applies from_dri2_format below.
> static enum pipe_format dri2_format_to_pipe_format (int format)
> @@ -791,13 +831,13 @@ dri2_create_image_from_winsys(__DRIscreen *_screen,
> __DRIimage *img;
> struct pipe_resource templ;
> unsigned tex_usage;
> - enum pipe_format pf;
> + struct image_format *f = NULL;
Nit: Initialisation is not needed... which applies for the rest of the patch.
> @@ -1077,7 +1086,19 @@ dri2_query_image(__DRIimage *image, int attrib, int
> *value)
> *value = image->dri_components;
> return GL_TRUE;
> case __DRI_IMAGE_ATTRIB_FOURCC:
> - *value = convert_to_fourcc(image->dri_format);
> + switch (image->dri_components) {
> + case __DRI_IMAGE_COMPONENTS_Y_U_V:
> + nplanes = 3;
> + break;
> + case __DRI_IMAGE_COMPONENTS_Y_UV:
> + case __DRI_IMAGE_COMPONENTS_Y_XUXV:
> + nplanes = 2;
> + break;
> + default:
> + nplanes = 1;
> + }
> + f = image_format_from_dri2_format(image->dri_format, nplanes);
> + *value = f->fourcc;
Strictly speaking these queries may fail, although we don't check that
in the loader :-\
Might as pick the loose ends at a later stage.
-Emil
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