[Mesa-dev] [PATCH 10/22] intel/blorp: Add an entrypoint for clearing depth and stencil

[Pohjolainen, Topi]

On Fri, Oct 07, 2016 at 09:41:08PM -0700, Jason Ekstrand wrote:
> Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
> ---
>  src/intel/blorp/blorp.h       | 10 ++++++++
>  src/intel/blorp/blorp_clear.c | 58 +++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 68 insertions(+)
> 
> diff --git a/src/intel/blorp/blorp.h b/src/intel/blorp/blorp.h
> index 480f1bb..263d194 100644
> --- a/src/intel/blorp/blorp.h
> +++ b/src/intel/blorp/blorp.h
> @@ -134,6 +134,16 @@ blorp_clear(struct blorp_batch *batch,
>              const bool color_write_disable[4]);
>  
>  void
> +blorp_clear_depth_stencil(struct blorp_batch *batch,
> +                          const struct blorp_surf *depth,
> +                          const struct blorp_surf *stencil,
> +                          uint32_t level, uint32_t start_layer,
> +                          uint32_t num_layers,
> +                          uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1,
> +                          bool clear_depth, float depth_value,
> +                          bool clear_stencil, uint8_t stencil_value);
> +
> +void
>  blorp_ccs_resolve(struct blorp_batch *batch,
>                    struct blorp_surf *surf, enum isl_format format);
>  
> diff --git a/src/intel/blorp/blorp_clear.c b/src/intel/blorp/blorp_clear.c
> index a8f29fd..1d6bf1c 100644
> --- a/src/intel/blorp/blorp_clear.c
> +++ b/src/intel/blorp/blorp_clear.c
> @@ -306,6 +306,64 @@ blorp_clear(struct blorp_batch *batch,
>  }
>  
>  void
> +blorp_clear_depth_stencil(struct blorp_batch *batch,
> +                          const struct blorp_surf *depth,
> +                          const struct blorp_surf *stencil,
> +                          uint32_t level, uint32_t start_layer,
> +                          uint32_t num_layers,
> +                          uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1,
> +                          bool clear_depth, float depth_value,
> +                          bool clear_stencil, uint8_t stencil_value)
> +{
> +   struct blorp_params params;
> +   blorp_params_init(&params);
> +
> +   params.x0 = x0;
> +   params.y0 = y0;
> +   params.x1 = x1;
> +   params.y1 = y1;
> +
> +   while (num_layers > 0) {
> +      params.num_layers = num_layers;
> +
> +      if (clear_stencil) {
> +         brw_blorp_surface_info_init(batch->blorp, &params.stencil, stencil,
> +                                     level, start_layer,
> +                                     ISL_FORMAT_UNSUPPORTED, true);
> +         params.stencil_ref = stencil_value;
> +
> +         params.dst.surf.samples = params.stencil.surf.samples;
> +         params.dst.surf.logical_level0_px =
> +            params.stencil.surf.logical_level0_px;

Similarly to patch four, here you are thinking of having additionally:

            params.dst.view = params.depth.view;
> +
> +         if (params.stencil.view.array_len < params.num_layers)
> +            params.num_layers = params.stencil.view.array_len;
> +      }
> +
> +      if (clear_depth) {
> +         brw_blorp_surface_info_init(batch->blorp, &params.depth, depth,
> +                                     level, start_layer,
> +                                     ISL_FORMAT_UNSUPPORTED, true);
> +         params.z = depth_value;
> +         params.depth_format =
> +            isl_format_get_depth_format(depth->surf->format, false);
> +
> +         params.dst.surf.samples = params.depth.surf.samples;
> +         params.dst.surf.logical_level0_px =
> +            params.depth.surf.logical_level0_px;

As well as here:

            params.dst.view = params.depth.view;

Destination render surface itself is a null surface, right? Why do we need
to specify the view?

> +
> +         if (params.depth.view.array_len < params.num_layers)
> +            params.num_layers = params.depth.view.array_len;
> +      }
> +
> +      batch->blorp->exec(batch, &params);
> +
> +      start_layer += params.num_layers;
> +      num_layers -= params.num_layers;
> +   }
> +}
> +
> +void
>  blorp_ccs_resolve(struct blorp_batch *batch,
>                    struct blorp_surf *surf, enum isl_format format)
>  {
> -- 
> 2.5.0.400.gff86faf
> 
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