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25d185a501
Compressed textures have two additional quirks that affect the tiling code (but not the mip offsets): they get extra stride padding in some cases for the large miptree, and the tile size is based on the POT size and not the real size for the small miptree. Signed-off-by: Asahi Lina <lina@asahilina.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26614> |
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| layout.h | ||
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| README | ||
| tiling.c | ||
# ail ail is a small library for working with the image (and buffer) layouts encountered with AGX hardware. Its design is inspired by isl. In particular, ail strives to use isl unit suffixes and to represent quantities in a canonical, API-agnostic fashion. ail conventions differ slightly from isl. See the isl documentation in mesa/docs/isl for the conventions that inspired ail, in particular mesa/docs/isl/units.rst. In ail, we have the following units: **Bytes (B)**: 8-bits. **Samples (sa)**: An individual sample. The number of bytes per sample depends on the format. **Pixels (px)**: The unit everything starts as from the API. A pixel contains a fixed number of samples, given as the layout's `sample_count_sa`. For twiddled layouts, these samples are stored together in emmory. **Elements (el)**: For a block-compressed format, a single compression block containing multiple pixels. Otherwise, equal to a single pixel. **Tiles (tiles)**: Defined only for tiled/twiddled layouts. A group of elements forming the layout-specific tile. We do not support any multisampled block-compressed layouts, so either pixels equals either samples or elements.