marfrit
a4e7d8ab90
panvk-bifrost campaigns (r1..r4 Vulkan compositor + r5.video1 Vulkan
video decode) shipped before this repo existed; the deliverable
patches live in marfrit-packages, but the reasoning chain, phase docs,
and source-state evidence lived only in local working trees on the
development host.
This retrofit imports:
- mesa-panvk-bifrost/ — r1..r4 era phase docs (iter1..iter18)
(libmali stub blobs at iter18/blob/ excluded
— 109MB of RE artifacts replaced with a README
pointer)
- mesa-panvk-bifrost-video/ — sibling campaign phase docs + probe
- evidence/ — frozen .tgz source snapshots at each milestone
(basis for the 0005 patch diff generation)
Future iterations should branch off here from day one, so each iter is
a commit rather than a snapshot. See [[feedback-session-local-process-pins]]
for the process drift this retrofit closes.
Total: 1.9 MB across 124 files.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
63 lines
2.7 KiB
Plaintext
63 lines
2.7 KiB
Plaintext
iter7 vkcube — captured 2026-05-19 on ohm
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(PineTab2 v2.0, RK3566, Mali-G52 r1 MC1, Mesa 26.0.6, kernel 7.0.0-danctnix1-6)
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Operator session: mfritsche (UID 1001), Plasma/Wayland on tty1, wayland-0 socket.
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===== RUN #1 (--c 120 --wsi wayland) =====
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$ sudo -u mfritsche XDG_RUNTIME_DIR=/run/user/1001 WAYLAND_DISPLAY=wayland-0 \
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PAN_I_WANT_A_BROKEN_VULKAN_DRIVER=1 timeout 30 vkcube --c 120 --wsi wayland
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WARNING: panvk is not a conformant Vulkan implementation, testing use only.
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Selected GPU 0: Mali-G52 r1 MC1, type: IntegratedGpu
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===== RC=0 =====
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===== RUN #2 (--c 120 --wsi wayland --validate) =====
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$ sudo -u mfritsche XDG_RUNTIME_DIR=/run/user/1001 WAYLAND_DISPLAY=wayland-0 \
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PAN_I_WANT_A_BROKEN_VULKAN_DRIVER=1 timeout 30 vkcube --c 120 --wsi wayland --validate
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WARNING: panvk is not a conformant Vulkan implementation, testing use only.
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Selected GPU 0: Mali-G52 r1 MC1, type: IntegratedGpu
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===== RC=0 =====
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(VK_LAYER_KHRONOS_validation active, zero warnings printed.)
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===== RUN #3 (--c 240, timed) =====
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$ time sudo -u mfritsche XDG_RUNTIME_DIR=/run/user/1001 WAYLAND_DISPLAY=wayland-0 \
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PAN_I_WANT_A_BROKEN_VULKAN_DRIVER=1 timeout 30 vkcube --c 240 --wsi wayland
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WARNING: panvk is not a conformant Vulkan implementation, testing use only.
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Selected GPU 0: Mali-G52 r1 MC1, type: IntegratedGpu
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real 0m4.352s
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user 0m0.176s
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sys 0m0.251s
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===== RC=0 =====
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→ 240 frames / 4.352s = ~55.1 FPS sustained.
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Almost certainly vsync-locked to display refresh (60Hz on PineTab2).
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user+sys CPU = 0.43s out of 4.35s wall → ~10% CPU, the rest is GPU+vsync wait.
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===== OPERATOR VISUAL CONFIRMATION =====
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2026-05-19, mfritsche: "Ich hab' ihn gesehen." — vkcube's rotating textured
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cube was visually verified on the PineTab2 screen during the run.
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===== DMESG =====
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No panfrost faults, no MMU faults, no GPU error messages logged during or
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after the 3 vkcube runs.
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===== KEY OBSERVATIONS =====
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1. PanVk-Bifrost handles the canonical Vulkan reference application end-to-end:
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- VK_KHR_wayland_surface creates a surface against the Plasma compositor
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- VK_KHR_swapchain allocates swapchain images
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- vkAcquireNextImageKHR + vkQueuePresentKHR cycle works for 240 frames
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- Rotating MVP matrix per frame, textured cube vertex buffer, depth test
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- 55 FPS sustained on a single-core (MC1) Mali-G52 — vsync-locked
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2. The "present support = false" line in vulkaninfo (from an off-line surface
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query) is misleading — with an actual Wayland surface in play, vkcube
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negotiates a present-capable swapchain without issues.
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3. Validation layer reports zero warnings even with --validate.
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4. This is the first real-app smoke test in this campaign and it passes
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without any code path failing.
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