marfrit
e323aa2316
Adds 0008-panvk-bifrost-bump-max-image-dim-3d-for-dawn.patch. Two-hunk patch:
Hunk 1: Bumps maxImageDimension3D from 512 to 2048 on Bifrost (PAN_ARCH 7..10).
Surfaced by panvk-bifrost-perf-measurement iter1 spike: Brave's WebGPU/Dawn
detects panvk-bifrost as a Vulkan adapter on Mali-G52 r1 MC1 but rejects it
because the advertised limit is below WebGPU's 2048 minimum (per
third_party/dawn/src/dawn/native/vulkan/PhysicalDeviceVk.cpp:746). This is
the actual unblock for the campaign's stated motivator — Chromium GPU
process Vulkan boot on PineTab2 / Bifrost SBCs.
Per Vulkan 1.3 spec §43.1, maxImageDimensionXD is the upper bound on any
creatable image; per-format limits MAY be smaller. On PAN_ARCH<=10 the
per-format limit caps at ~1023 per axis for RGBA8 within the 4 GB
max_img_size_B address constraint. Apps trying 2048^3 with thick formats
hit the per-format limit at image-create — per-spec behavior.
Hunk 2: Removes three asserts in get_max_3d_image_size() that encoded the
wrong invariant (per-format >= basic), opposite of what the Vulkan spec
mandates. The asserts were release-mode-masked via NDEBUG, but debug
builds would abort the first time Dawn (or any client) called
vkGetPhysicalDeviceImageFormatProperties on a 3D image format. Surfaced
by Phase 5 2nd-model review.
Verified on PineTab2 (Mali-G52 r1 MC1, PAN_ARCH 7):
- vulkaninfo: maxImageDimension3D = 2048
- Brave/Dawn: "Insufficient Vulkan limits" warning eliminated; adapter
accepted for WebGPU.
- CTS regression: dEQP-VK.api.copy_and_blit.core.image_to_image.3d_images.*
6/6 Pass (unchanged from r7 baseline).
Phase 5 (2nd-model) review: APPROVE WITH CHANGES — both changes applied
(release-mode + debug-mode assert exposure addressed by removing the
wrong-invariant asserts).
Note on numbering: r8 was attempted (KHR_depth_clamp_zero_one trim) but
abandoned mid-Phase-3 when it surfaced that 5 more post-1.3.10 KHR
extensions are advertised — surgically false-gating all of them would
risk undoing r1's KHR_robustness2 work for Chromium Dawn. Documented at
~/src/panvk-bifrost/iter21/phase0to3_close_no_ship.md.
Cross-refs:
- ~/src/panvk-bifrost/iter22/phase0to2_max3d_close.md (Phase 0-2 close)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
marfrit-packages
Overlay package repository for the reauktion.de infrastructure.
Published at: https://packages.reauktion.de/
Scope
| Tree | Arches | Notes |
|---|---|---|
| Arch Linux ARM (ALARM) | aarch64 |
primary target — Pi 5, Rock 5, ampere, KU-1255 test rigs |
| Arch Linux | x86_64 |
for nuccies / workstations |
| Debian | arm64, amd64 |
for non-Arch hosts |
MIPS is intentionally unsupported. The Fritz!Box is sacred.
Layout (served at packages.reauktion.de)
packages.reauktion.de/
├── arch/
│ ├── aarch64/{marfrit.db,marfrit.files,*.pkg.tar.{xz,zst}{,.sig}}
│ └── x86_64/...
├── debian/
│ ├── dists/
│ │ ├── bookworm/{Release,InRelease,Release.gpg,main/binary-{arm64,amd64}/...}
│ │ └── trixie/...
│ └── pool/main/...
└── marfrit.gpg # public signing key
Adding the repo (Arch / ALARM)
curl -sO https://packages.reauktion.de/marfrit.gpg
sudo pacman-key --add marfrit.gpg
sudo pacman-key --lsign-key 92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C
# Paste at the end of /etc/pacman.conf:
[marfrit]
Server = https://packages.reauktion.de/arch/$arch
SigLevel = Required DatabaseRequired
sudo pacman -Sy
Adding the repo (Debian)
sudo install -m 755 -d /etc/apt/keyrings
curl -s https://packages.reauktion.de/marfrit.gpg | \
sudo gpg --dearmor -o /etc/apt/keyrings/marfrit.gpg
echo "deb [signed-by=/etc/apt/keyrings/marfrit.gpg] https://packages.reauktion.de/debian $(lsb_release -cs) main" | \
sudo tee /etc/apt/sources.list.d/marfrit.list
sudo apt update
Signing key
- Fingerprint:
92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C - UID:
Markus Fritsche (marfrit-repo signing) <mfritsche@reauktion.de> - Expires: 2030-04-13
Key management procedures (renewal, rotation, revocation) live in DokuWiki at private:reauktion:marfrit_repo_key (admin-only).
Layout in this Git repo
marfrit-packages/
├── README.md
├── arch/
│ └── distcc-avahi/ # ALARM distcc with --with-avahi
├── debian/ # (future) Debian source packages
└── .gitea/
└── workflows/
└── build.yml # CI pipeline stub
mfritsche@reauktion.de.