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panfrost: Precalculate stride and nr of blocks for AFBC layouts

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For AFBC packing, we will need to have the stride of the resource
in terms of superblocks and the total number of blocks. It is
easier to pre-calculate once when initializing the resource layout.

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25012>
This commit is contained in:
Louis-Francis Ratté-Boulianne 2023-08-31 11:33:39 -04:00 • committed by Marge Bot
parent 9f3a79a6a3
commit 113d88f94d
2 changed files with 9 additions and 0 deletions
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3
src/panfrost/lib/pan_layout.c
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@ -410,6 +410,9 @@ pan_image_layout_init(const struct panfrost_device *dev,
if (afbc) {
slice->row_stride =
pan_afbc_row_stride(layout->modifier, effective_width);
slice->afbc.stride = effective_width / block_size.width;
slice->afbc.nr_blocks =
slice->afbc.stride * (effective_height / block_size.height);
slice->afbc.header_size =
ALIGN_POT(slice->row_stride * (effective_height / align_h),
pan_afbc_body_align(layout->modifier));

6
src/panfrost/lib/pan_texture.h
View file

@ -63,6 +63,12 @@ struct pan_image_slice_layout {
unsigned surface_stride;
struct {
/* Stride in number of superblocks */
unsigned stride;
/* Number of superblocks */
unsigned nr_blocks;
/* Size of the AFBC header preceding each slice */
unsigned header_size;