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ail: support twiddled

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34585>
This commit is contained in:
Alyssa Rosenzweig 2025-02-24 17:37:25 -05:00 • committed by Marge Bot
parent 6fdad684da
commit 8f57b5187f
3 changed files with 64 additions and 1 deletions
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58
src/asahi/layout/layout.c
View file

@ -4,6 +4,8 @@
*/
#include "layout.h"
#include "util/format/u_format.h"
#include "util/u_math.h"
static void
ail_initialize_linear(struct ail_layout *layout)
@ -64,7 +66,7 @@ ail_get_block_size_B(struct ail_layout *layout)
}
static void
ail_initialize_twiddled(struct ail_layout *layout)
ail_initialize_gpu_tiled(struct ail_layout *layout)
{
unsigned offset_B = 0;
unsigned blocksize_B = ail_get_block_size_B(layout);
@ -211,6 +213,57 @@ ail_initialize_twiddled(struct ail_layout *layout)
layout->size_B = (uint64_t)layout->layer_stride_B * layout->depth_px;
}
static void
ail_initialize_twiddled(struct ail_layout *layout)
{
unsigned offset_B = 0;
unsigned blocksize_B = ail_get_block_size_B(layout);
unsigned w_el = util_format_get_nblocksx(layout->format, layout->width_px);
unsigned h_el = util_format_get_nblocksy(layout->format, layout->height_px);
bool compressed = util_format_is_compressed(layout->format);
for (unsigned l = 0; l < layout->levels; ++l) {
unsigned alloc_w_el = u_minify(util_next_power_of_two(w_el), l);
unsigned alloc_h_el = u_minify(util_next_power_of_two(h_el), l);
unsigned logical_w_el = util_next_power_of_two(u_minify(w_el, l));
unsigned logical_h_el = util_next_power_of_two(u_minify(h_el, l));
/* AGX: Even the exceptions have exceptions */
if (compressed) {
logical_w_el = alloc_w_el;
logical_h_el = alloc_h_el;
}
unsigned size_el = alloc_w_el * alloc_h_el;
layout->level_offsets_B[l] = offset_B;
offset_B = ALIGN_POT(offset_B + (blocksize_B * size_el), AIL_CACHELINE);
unsigned minor_el = MIN2(logical_w_el, logical_h_el);
layout->stride_el[l] = logical_w_el;
layout->tilesize_el[l] = (struct ail_tile){minor_el, minor_el};
}
/* Add the end offset so we can easily recover the size of a level */
assert(layout->levels < ARRAY_SIZE(layout->level_offsets_B));
layout->level_offsets_B[layout->levels] = offset_B;
/* Determine the start of the miptail. From that level on, we can no longer
* precisely bind at page granularity.
*/
/* XXX TODO */
layout->mip_tail_first_lod = 0;
/* Determine the stride of the miptail. Sparse arrayed images inherently
* require page-aligned layers to be able to bind individual layers.
*/
unsigned tail_offset_B = layout->level_offsets_B[layout->mip_tail_first_lod];
layout->mip_tail_stride = align(offset_B - tail_offset_B, AIL_PAGESIZE);
layout->page_aligned_layers = true;
layout->layer_stride_B = ALIGN_POT(offset_B, AIL_PAGESIZE);
layout->size_B = (uint64_t)layout->layer_stride_B * layout->depth_px;
}
static void
ail_initialize_compression(struct ail_layout *layout)
{
@ -313,6 +366,9 @@ ail_make_miptree(struct ail_layout *layout)
ail_initialize_linear(layout);
break;
case AIL_TILING_GPU:
ail_initialize_gpu_tiled(layout);
break;
case AIL_TILING_TWIDDLED:
ail_initialize_twiddled(layout);
break;
default:

5
src/asahi/layout/layout.h
View file

@ -30,6 +30,11 @@ enum ail_tiling {
* GPU-tiled. Always allowed.
*/
AIL_TILING_GPU,
/**
* Fully twiddled.
*/
AIL_TILING_TWIDDLED,
};
/*

2
src/asahi/lib/agx_helpers.h
View file

@ -84,6 +84,8 @@ agx_translate_layout(enum ail_tiling tiling)
switch (tiling) {
case AIL_TILING_GPU:
return AGX_LAYOUT_GPU;
case AIL_TILING_TWIDDLED:
return AGX_LAYOUT_TWIDDLED;
case AIL_TILING_LINEAR:
return AGX_LAYOUT_LINEAR;
}