mirror of
https://github.com/Droid-Deck/DroidDeck.git
synced 2026-11-12 19:41:10 +00:00
Stefan Zijlstra
6fcc11ab80
The chain copy that clears the emulated textureCompressionBC only knew a handful of structure sizes, so a valid chain such as VkPhysicalDeviceTimelineSemaphoreFeatures -> VkPhysicalDeviceFeatures2 was passed on unchanged and the compat layer refused the bit. Size every structure that may extend VkDeviceCreateInfo from a table generated from the Vulkan registry (gen_device_chain.py, Vulkan-Headers 1.3.275, the headers the build compiles with), and copy onto the heap instead of a fixed buffer. Only a structure newer than those headers still passes the chain unchanged. Add a regression test that runs the layer between a simulated loader and a mock driver: the timeline-semaphore chain, pEnabledFeatures, an unknown structure, the caller's structures left untouched, per-device YCbCr sampler tracking with handle reuse, and the KHR calibrated-timestamp forwarding. CI installs libvulkan-dev for it.
44 lines
1.9 KiB
Python
Executable File
44 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Generate device_chain.inc: the structures a VkDeviceCreateInfo chain may hold, with their sizes.
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The Xclipse layer copies the chain ahead of the VkPhysicalDeviceFeatures2 it edits, and copying a
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structure needs its size. Run against the Vulkan-Headers release the build compiles with (Ubuntu
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24.04's libvulkan-dev is 1.3.275):
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gen_device_chain.py Vulkan-Headers/registry/vk.xml Vulkan-Headers/include/vulkan/vulkan_core.h
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"""
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import re
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import sys
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import xml.etree.ElementTree as ElementTree
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from pathlib import Path
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def main(registry, core_header, output):
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core = Path(core_header).read_text()
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root = ElementTree.parse(registry).getroot()
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entries = []
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for struct in root.iter("type"):
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if struct.get("category") != "struct" or struct.get("alias"):
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continue
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if "VkDeviceCreateInfo" not in (struct.get("structextends") or "").split(","):
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continue
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name = struct.get("name")
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stype = next((member.get("values") for member in struct.findall("member")
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if member.findtext("name") == "sType"), None)
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# Platform and provisional structures live outside vulkan_core.h; the layer never builds them.
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if not stype or not re.search(r"\}\s*" + re.escape(name) + r"\s*;", core):
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continue
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entries.append((stype, name))
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version = re.search(r"#define VK_HEADER_VERSION (\d+)", core).group(1)
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lines = ["/* Generated by gen_device_chain.py from Vulkan-Headers 1.3.%s; do not edit. */" % version]
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lines += ["DEVICE_CHAIN(%s, %s)" % entry for entry in sorted(entries)]
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Path(output).write_text("\n".join(lines) + "\n")
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print("%d structures" % len(entries))
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if __name__ == "__main__":
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if len(sys.argv) not in (3, 4):
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sys.exit(__doc__)
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main(sys.argv[1], sys.argv[2], sys.argv[3] if len(sys.argv) == 4 else
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Path(__file__).with_name("device_chain.inc"))
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