AGC: Intel Iris Xe (Windows) driver crashes in vkGetPipelineCacheData from the pipeline cache saver thread about 10 s after start #4781

What happens

With ANYPS5_GPU=Intel, DOOM Native Port (PPSA99666) and ccleste (PPSA59322) crash 3 of 3 runs at about 10.7 s. Both render at 60 FPS for 120 s on the NVIDIA GPU of the same machine. DOOM's report:

FATAL: unhandled exception 0xc0000005 on thread 27072 ''
  rip 0x00007ff93db2d102 igvk64.dll+0x14d102
  read of 0x0000000000000170

The AnyPS5 frames on the stack resolve to:

• AgcDriver::Graphics::PipelineCache::save(bool) + 256
• AgcDriver::Graphics::PipelineCache::run() + 113

So the fault is inside the Intel driver during vkGetPipelineCacheData (core/libs/prx/libSceAgcDriver/Graphics/src/PipelineCache.cpp:109-111). The call comes from the saver thread's first periodic save (SaveIntervalSeconds = 10), while the title's threads keep creating pipelines with the same VkPipelineCache.

Checks

• Saver disabled: with ANYPS5_NO_SHADER_CACHE=1, so no cache directory and no saver thread, DOOM on the Intel GPU runs past 40 s (27 FPS) instead of crashing at 10.7 s.
• Validation layer: Khronos validation (Vulkan SDK 1.4.363.0, errors and warnings, thread safety on by default) reports nothing for DOOM on either GPU before the crash. The crashing call passes through VkLayer_khronos_validation.dll.
• Two Intel drivers: reproduced on 32.0.101.6790 (April 2025) and 32.0.101.7092 (September 2026).

The cache is created without VK_PIPELINE_CACHE_CREATE_EXTERNALLY_SYNCHRONIZED_BIT, so concurrent vkGetPipelineCacheData and pipeline creation is valid usage. This looks like an Intel driver bug that AnyPS5 runs into. A workaround could serialize the save against pipeline creation on Intel, or merge into a separate cache before reading it.

Separately

ccleste with ANYPS5_NO_SHADER_CACHE=1 on the Intel GPU gets past 10.7 s but then stops with VkResult is ERROR_DEVICE_LOST from the title's own Vulkan code at about 12.7 s. That is not caused by the saver. I will look at it separately.

Environment

• AnyPS5: main 1acfa7f, Release, WinLibs GCC 15.2.0 r7.
• OS: Windows 11 Home 10.0.26300.
• Intel GPU: Intel Iris Xe Graphics (0x8086:0x46a6).
• NVIDIA GPU: RTX 4070 Laptop, driver 32.0.16.1714.
• Titles: from https://github.com/blackbearreloaded/ps5-homebrew-catalog (apps/PPSA99666.json, apps/PPSA59322.json), unpacked from their fake-signed SELF and converted with relinker --windows.

Measured and written with Claude Code assistance.