On Fri, Oct 12, 2018 at 01:46:55PM -0500, Jason Ekstrand wrote:
> ---
> src/intel/isl/isl.c | 5 +++++
> src/intel/isl/isl.h | 7 +++++++
> 2 files changed, 12 insertions(+)
Matches PRM:
Reviewed-by: Topi Pohjolainen <topi.pohjolai...@intel.com>
>
> diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c
> index 4a8380ad540..3657b11ee00 100644
> --- a/src/intel/isl/isl.c
> +++ b/src/intel/isl/isl.c
> @@ -181,6 +181,7 @@ isl_tiling_get_info(enum isl_tiling tiling,
> return;
> }
>
> + uint32_t max_miptail_levels = 0;
> switch (tiling) {
> case ISL_TILING_LINEAR:
> assert(bs > 0);
> @@ -239,6 +240,7 @@ isl_tiling_get_info(enum isl_tiling tiling,
> .d = 1,
> .a = 1,
> };
> + max_miptail_levels = is_Ys ? 16 : 12;
> break;
>
> case ISL_SURF_DIM_2D:
> @@ -262,6 +264,7 @@ isl_tiling_get_info(enum isl_tiling tiling,
> logical_el.h >>= (ffs(samples) - 1) / 2;
> logical_el.a = samples;
> }
> + max_miptail_levels = is_Ys ? 16 - ffs(samples) : 11;
> break;
>
> case ISL_SURF_DIM_3D:
> @@ -279,6 +282,7 @@ isl_tiling_get_info(enum isl_tiling tiling,
> .d = 1 << (4 - ((ffs(format_bpb) - 3) / 3) + (1 * is_Ys)),
> .a = 1,
> };
> + max_miptail_levels = is_Ys ? 16 : 12;
> break;
> }
>
> @@ -331,6 +335,7 @@ isl_tiling_get_info(enum isl_tiling tiling,
> .format_bpb = format_bpb,
> .logical_extent_el = logical_el,
> .phys_extent_B = phys_B,
> + .max_miptail_levels = max_miptail_levels,
> };
> }
>
> diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
> index 4fb212e33d5..0bcb7edc899 100644
> --- a/src/intel/isl/isl.h
> +++ b/src/intel/isl/isl.h
> @@ -1085,6 +1085,13 @@ struct isl_tile_info {
> */
> struct isl_extent4d logical_extent_el;
>
> + /** The maximum number of miplevels that will fit in the miptail.
> + *
> + * This does not guarantee that the given number of miplevels will fit in
> + * the miptail as that is also dependent on the size of the miplevels.
> + */
> + uint32_t max_miptail_levels;
> +
> /** The physical size of the tile in bytes and rows of bytes
> *
> * This field determines how the tiles of a surface are physically layed
> --
> 2.19.1
>
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