BlackMark
2532ffed56
A real chain-aware Vulkan implicit layer the loader inserts at vkCreateInstance -- the reliable early-presence path for games that init Vulkan immediately, which the inline-hook vk_hook can't catch. It intercepts vkCreateInstance / Device / CreateSwapchainKHR / QueuePresentKHR via proper layer-chain dispatch and does the same read-back capture (vkCmdCopyImageToBuffer -> swizzle -> hook-owned D3D11 shared texture, with present-semaphore re-chaining) as vk_hook. The loader/layer link structs (VkLayer*CreateInfo, VkNegotiateLayerInterface) aren't in Vulkan-Headers, so they're hand-declared to interface version 2. Key gotcha found via tracing: the loader tags those link structs with small internal sType values (LOADER_INSTANCE_CREATE_INFO=47, _DEVICE=48), not the 1000000000 range -- matching the wrong value made the device-chain walk fail. Scoping: an implicit layer loads into every Vulkan app, so it only *captures* when COOP_VK_LAYER_FORCE is set (tests) or this process's image matches %TEMP%\coop_vk_target.txt (the host writes it); otherwise pure pass-through. mock_game_test registers it via VK_LAYER_PATH/VK_INSTANCE_LAYERS and decodes frames through it. Ships at the bin root with its JSON manifest. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
20 lines
1.1 KiB
CMake
20 lines
1.1 KiB
CMake
# CoopAllTheThings Vulkan capture layer: a real implicit Vulkan layer the loader inserts at
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# vkCreateInstance, so it's in the chain before a game (that caches its present pointer at init)
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# can resolve vkQueuePresentKHR -- the reliable early-presence path the inline-hook vk_hook can't
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# get for immediate-init games. Ships at the bin root (registered for real games), with its JSON
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# manifest copied alongside (the manifest's library_path is relative).
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coop_require_submodule("Vulkan-Headers" "third_party/Vulkan-Headers/include/vulkan/vulkan.h")
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add_library(coop_vk_layer SHARED coop_vk_layer.cpp)
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target_include_directories(coop_vk_layer PRIVATE
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${CMAKE_SOURCE_DIR}/hook/src # ipc_client.hpp (reused IPC client)
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${CMAKE_SOURCE_DIR}/third_party/Vulkan-Headers/include)
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target_link_libraries(coop_vk_layer PRIVATE coop_common d3d11 dxgi)
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# Drop the manifest next to the built DLL so VK_LAYER_PATH / the registry can find it.
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add_custom_command(TARGET coop_vk_layer POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E copy_if_different
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${CMAKE_CURRENT_SOURCE_DIR}/coop_vk_layer.json $<TARGET_FILE_DIR:coop_vk_layer>/coop_vk_layer.json)
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