The console run now reaches a frame. In order: video_vulkan selected, the console's
khr_display WSI, a device, a swapchain at 3840x2160, four textures, a vertex buffer,
the stock shader reflected, both stages compiled by the driver's own compiler,
vkCreateGraphicsPipelines returning 0, vulkan_init handing back a live pointer, the
input driver opening the pad, and runloop_iterate reaching vulkan_frame -> vkQueueSubmit.
Nothing is on screen yet: the first frame's command buffer already has a render pass
open when the backbuffer pass begins, and Mesa's common CmdBeginRenderPass2 asserts.
Three of the four fixes are port patches, all of them requests that driver refuses:
0016 its pipeline check accepts only VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, and its
draw path refuses a non-indexed draw whose first vertex is not zero; the two
quads are now six-vertex lists, the second triangle reached through the
binding's own offset. This is what turned VK_ERROR_UNKNOWN into a pipeline.
0017 it refuses any sampler that is not clamp-to-edge and leaves the output handle
untouched, while CommonResources destroys every handle that is not
VK_NULL_HANDLE - sixteen refused samplers were destroyed as if real and the
driver asserted. The array is cleared before it is filled.
0018 the khr_display context reported quit from the frontend's signal-handler
state, so the runloop ended on its first iteration and rarch_main returned 0
with no frame drawn. A console title has no terminal and no SIGTERM sender.
The fourth is this port's own CRT: _start went from _init_env straight to the static
constructors and never cleared the BSS, whose tail is 0xc7040 bytes of a segment that
is 0x104b4 bytes in the file. tooling/native/ps5-pie.ld marks __bss_start/__bss_end
and _start clears that range; every run prints the check that says so. Whether the
loader also zeroed it was never measured - the invariant is what this asserts.
Two instruments, both because nothing else could be read:
src/main.cpp sends stderr to /app0/trace.txt and makes it unbuffered. The driver's
__assert prints the expression, file and line to stderr and then aborts, and the
console's libc buffers that stream, so every assertion arrived as a bare `abort is
called(system)`. The trace now carries the assert text, which is what identified the
render-pass state as the current blocker.
tools/apply-runtime-probes.py carries thirty-nine probes, and tests/test_frontend.py
checks the set itself: an insert that ends with its own anchor duplicates the line it
is inserted before, which broke the build three times in this round. Every probe must
carry a marker in its own text, a note and a trailing newline.
Evidence: bash tools/run-title.sh with the probe set applied (captures under klog/,
probes reverted before this commit); the trace's own lines quoted above;
bash tools/verify.sh PASS with a probe-free image (`strings build/llvm-pie.elf |
grep -c 'probe PIPE2|probe VDRV|...' ` = 0 after deleting build/ra/obj, which is what
a revert needs); 20 unit tests including the probe-set checks.
Next: mark the span between the offscreen-passes call and the backbuffer pass - the
first-frame history/feedback clear and the menu texture upload - and fix whichever of
the two leaves a render pass open.
Sets up this project as the native pipeline's scaffolding plus RetroArch's
sources, so RetroArch is compiled for the title pipeline rather than converted
into it.
- tools/scaffold-native.sh builds the scaffold from
../ps5-native-app-boilerplate-main: tooling, runtime (digest verified),
Makefile and its tools, merged into this repository's tools/ rather than
replacing them. An earlier version replaced tools/ wholesale and deleted this
project's own scripts; the copy is now additive and the reason is in the file.
- tools/fetch-retroarch.sh clones the pinned upstream tag into vendor/ and
records the revision, so "built from RetroArch 1.22.2" is checkable.
- src/display.{hpp,cpp} owns the console's display: VideoOut, direct memory, two
registered buffers, present-and-wait. The sequence and its two load-bearing
details come from the sibling application that proved it on hardware.
- src/main.cpp draws a moving bar: the cheapest thing that proves build, title
format, launcher, VideoOut and the direct-memory path together.
- sce_sys/param.json is this project's identity, PPSA99169.
Evidence: src/display.cpp compiles through the pipeline's compiler
(tooling/prospero-clang18 with PS5_CLANG=/usr/bin/clang, -std=c++20), and a
RetroArch source file compiles the same way with its include paths.
Mihawk