Vulkan support in the Embedder API #29391
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shell/platform/embedder/embedder.h
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| const FlutterVulkanImage* /* image */); | ||
| typedef uint64_t* (*Uint64Callback)(void* /* user data */); | ||
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| typedef uint64_t* (*FlutterVulkanPresentImageCallback)(void* /* user data */, |
shell/platform/embedder/embedder.h
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| FlutterVulkanPhysicalDeviceHandle physical_device; | ||
| // VkDevice handle. | ||
| FlutterVulkanDeviceHandle device; | ||
| ProcResolver get_proc_address_callback; |
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Where is "ProcResolver" defined? How is this one different from "get_instance_proc_address_callback"?
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Ah, this signature is used in the GL renderer. I think this was supposed to be instance-less vkGetInstanceProcAddr in the doc, but on second thought I don't see a reason why this would be useful as a separate callback. Removed.
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Is this in a state where I could try testing it w/ Fuchsia code -- IE try to get Fuchsia to use EmbedderSurfaceVulkan? |
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I think this is about ready for trying out through the Embedder API surface itself (compositor and all), but the build's broken right now due to test harness stuff; I'll be fixing up the build later today |
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@bdero thanks for your hard work on this. I will start working with this on Monday. |
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…) to add missing implementations in SubzeroReactor.cpp. Corresponding buildroot PR: flutter/buildroot#529 Needed for flutter#29391.
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…) to add missing implementations in SubzeroReactor.cpp. Corresponding buildroot PR: flutter/buildroot#529 Needed for flutter#29391. (cherry picked from commit dca7211)
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…) to add missing implementations in SubzeroReactor.cpp. Corresponding buildroot PR: flutter/buildroot#529 Needed for flutter#29391.
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…) to add missing implementations in SubzeroReactor.cpp. Corresponding buildroot PR: flutter/buildroot#529 Needed for flutter#29391.
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…) to add missing implementations in SubzeroReactor.cpp. Corresponding buildroot PR: flutter/buildroot#529 Needed for flutter#29391.
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In flutter#29391 we extracted EmbedderTestContextVulkan, but didn't move the vulkan_context_ to that class. Since it's no longer used in the base class, we push it down to avoid the precompiler macros.
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In flutter#29391 we extracted EmbedderTestContextVulkan, but didn't move the vulkan_context_ to that class. Since it's no longer used in the base class, we push it down to avoid the ifdef guards.
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In #29391 we extracted EmbedderTestContextVulkan, but didn't move the vulkan_context_ to that class. Since it's no longer used in the base class, we push it down to avoid the ifdef guards. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
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Please take a look and see if the
embedder.hAPI looks like it works for your use case. /cc @jwinarske @arbreng @chinmaygardeSee
FlutterVulkanBackingStore.imageandFlutterVulkanRendererConfig.get_next_image_callback/present_image_callbackfor a full description of the default synchronization behavior for both the layer and root image writing cases respectively (the behavior is essentially the same).My thought is that by default, we can simply have the engine internally host sync (with VkFences) before calling "present" callbacks. This matches the Fuchsia embedder's current behavior.
Later on, we can enable embedders to take full control over synchronization by adding an optional
FlutterVulkanImage.semaphorefield that, when present, will trigger the engine to automatically disable the default fence+present callback behavior, and the engine will instead signal the semaphore on device after pipeline execution. If the embedder provides a semaphore, the embedder can then submit pipeline commands ahead of time that will start executing on device immediately after the engine is done writing the image, eliminating an unnecessary device->host sync + host->device queue submit from the rendering time in cases where it's not desirable to render directly into swapchain images.