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diff --git a/src/vulkan/common.h b/src/vulkan/common.h
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+/*
+ * This file is part of libplacebo.
+ *
+ * libplacebo is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * libplacebo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with libplacebo. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define VK_NO_PROTOTYPES
+#define VK_ENABLE_BETA_EXTENSIONS // for VK_KHR_portability_subset
+#define VK_USE_PLATFORM_METAL_EXT
+
+#include "../common.h"
+#include "../log.h"
+#include "../pl_thread.h"
+
+#include <libplacebo/vulkan.h>
+
+#ifdef PL_HAVE_WIN32
+#include <windows.h>
+#include <vulkan/vulkan_win32.h>
+#endif
+
+// Vulkan allows the optional use of a custom allocator. We don't need one but
+// mark this parameter with a better name in case we ever decide to change this
+// in the future. (And to make the code more readable)
+#define PL_VK_ALLOC NULL
+
+// Type of a vulkan function that needs to be loaded
+#define PL_VK_FUN(name) PFN_vk##name name
+
+// Load a vulkan instance-level extension function directly (on the stack)
+#define PL_VK_LOAD_FUN(inst, name, get_addr) \
+ PL_VK_FUN(name) = (PFN_vk##name) get_addr(inst, "vk" #name);
+
+#ifndef VK_VENDOR_ID_NVIDIA
+#define VK_VENDOR_ID_NVIDIA 0x10DE
+#endif
+
+// Shared struct used to hold vulkan context information
+struct vk_ctx {
+ pl_mutex lock;
+ pl_vulkan vulkan;
+ void *alloc; // host allocations bound to the lifetime of this vk_ctx
+ struct vk_malloc *ma; // VRAM malloc layer
+ pl_vk_inst internal_instance;
+ pl_log log;
+ VkInstance inst;
+ VkPhysicalDevice physd;
+ VkPhysicalDeviceProperties props;
+ VkPhysicalDeviceFeatures2 features;
+ uint32_t api_ver; // device API version
+ VkDevice dev;
+ bool imported; // device was not created by us
+
+ // Generic error flag for catching "failed" devices
+ bool failed;
+
+ // Enabled extensions
+ PL_ARRAY(const char *) exts;
+
+ // Command pools (one per queue family)
+ PL_ARRAY(struct vk_cmdpool *) pools;
+
+ // Pointers into `pools` (always set)
+ struct vk_cmdpool *pool_graphics;
+ struct vk_cmdpool *pool_compute;
+ struct vk_cmdpool *pool_transfer;
+
+ // Queue locking functions
+ PL_ARRAY(PL_ARRAY(pl_mutex)) queue_locks;
+ void (*lock_queue)(void *queue_ctx, uint32_t qf, uint32_t idx);
+ void (*unlock_queue)(void *queue_ctx, uint32_t qf, uint32_t idx);
+ void *queue_ctx;
+
+ // Pending commands. These are shared for the entire mpvk_ctx to ensure
+ // submission and callbacks are FIFO
+ PL_ARRAY(struct vk_cmd *) cmds_pending; // submitted but not completed
+
+ // Pending callbacks that still need to be drained before processing
+ // callbacks for the next command (in case commands are recursively being
+ // polled from another callback)
+ const struct vk_callback *pending_callbacks;
+ int num_pending_callbacks;
+
+ // Instance-level function pointers
+ PL_VK_FUN(CreateDevice);
+ PL_VK_FUN(EnumerateDeviceExtensionProperties);
+ PL_VK_FUN(GetDeviceProcAddr);
+ PL_VK_FUN(GetInstanceProcAddr);
+ PL_VK_FUN(GetPhysicalDeviceExternalBufferProperties);
+ PL_VK_FUN(GetPhysicalDeviceExternalSemaphoreProperties);
+ PL_VK_FUN(GetPhysicalDeviceFeatures2KHR);
+ PL_VK_FUN(GetPhysicalDeviceFormatProperties);
+ PL_VK_FUN(GetPhysicalDeviceFormatProperties2KHR);
+ PL_VK_FUN(GetPhysicalDeviceImageFormatProperties2KHR);
+ PL_VK_FUN(GetPhysicalDeviceMemoryProperties);
+ PL_VK_FUN(GetPhysicalDeviceProperties);
+ PL_VK_FUN(GetPhysicalDeviceProperties2);
+ PL_VK_FUN(GetPhysicalDeviceQueueFamilyProperties);
+ PL_VK_FUN(GetPhysicalDeviceSurfaceCapabilitiesKHR);
+ PL_VK_FUN(GetPhysicalDeviceSurfaceFormatsKHR);
+ PL_VK_FUN(GetPhysicalDeviceSurfacePresentModesKHR);
+ PL_VK_FUN(GetPhysicalDeviceSurfaceSupportKHR);
+
+ // Device-level function pointers
+ PL_VK_FUN(AcquireNextImageKHR);
+ PL_VK_FUN(AllocateCommandBuffers);
+ PL_VK_FUN(AllocateDescriptorSets);
+ PL_VK_FUN(AllocateMemory);
+ PL_VK_FUN(BeginCommandBuffer);
+ PL_VK_FUN(BindBufferMemory);
+ PL_VK_FUN(BindImageMemory);
+ PL_VK_FUN(CmdBeginDebugUtilsLabelEXT);
+ PL_VK_FUN(CmdBeginRenderPass);
+ PL_VK_FUN(CmdBindDescriptorSets);
+ PL_VK_FUN(CmdBindIndexBuffer);
+ PL_VK_FUN(CmdBindPipeline);
+ PL_VK_FUN(CmdBindVertexBuffers);
+ PL_VK_FUN(CmdBlitImage);
+ PL_VK_FUN(CmdClearColorImage);
+ PL_VK_FUN(CmdCopyBuffer);
+ PL_VK_FUN(CmdCopyBufferToImage);
+ PL_VK_FUN(CmdCopyImage);
+ PL_VK_FUN(CmdCopyImageToBuffer);
+ PL_VK_FUN(CmdDispatch);
+ PL_VK_FUN(CmdDraw);
+ PL_VK_FUN(CmdDrawIndexed);
+ PL_VK_FUN(CmdEndDebugUtilsLabelEXT);
+ PL_VK_FUN(CmdEndRenderPass);
+ PL_VK_FUN(CmdPipelineBarrier);
+ PL_VK_FUN(CmdPipelineBarrier2KHR);
+ PL_VK_FUN(CmdPushConstants);
+ PL_VK_FUN(CmdPushDescriptorSetKHR);
+ PL_VK_FUN(CmdResetQueryPool);
+ PL_VK_FUN(CmdSetScissor);
+ PL_VK_FUN(CmdSetViewport);
+ PL_VK_FUN(CmdUpdateBuffer);
+ PL_VK_FUN(CmdWriteTimestamp);
+ PL_VK_FUN(CreateBuffer);
+ PL_VK_FUN(CreateBufferView);
+ PL_VK_FUN(CreateCommandPool);
+ PL_VK_FUN(CreateComputePipelines);
+ PL_VK_FUN(CreateDebugReportCallbackEXT);
+ PL_VK_FUN(CreateDescriptorPool);
+ PL_VK_FUN(CreateDescriptorSetLayout);
+ PL_VK_FUN(CreateFence);
+ PL_VK_FUN(CreateFramebuffer);
+ PL_VK_FUN(CreateGraphicsPipelines);
+ PL_VK_FUN(CreateImage);
+ PL_VK_FUN(CreateImageView);
+ PL_VK_FUN(CreatePipelineCache);
+ PL_VK_FUN(CreatePipelineLayout);
+ PL_VK_FUN(CreateQueryPool);
+ PL_VK_FUN(CreateRenderPass);
+ PL_VK_FUN(CreateSampler);
+ PL_VK_FUN(CreateSemaphore);
+ PL_VK_FUN(CreateShaderModule);
+ PL_VK_FUN(CreateSwapchainKHR);
+ PL_VK_FUN(DestroyBuffer);
+ PL_VK_FUN(DestroyBufferView);
+ PL_VK_FUN(DestroyCommandPool);
+ PL_VK_FUN(DestroyDebugReportCallbackEXT);
+ PL_VK_FUN(DestroyDescriptorPool);
+ PL_VK_FUN(DestroyDescriptorSetLayout);
+ PL_VK_FUN(DestroyDevice);
+ PL_VK_FUN(DestroyFence);
+ PL_VK_FUN(DestroyFramebuffer);
+ PL_VK_FUN(DestroyImage);
+ PL_VK_FUN(DestroyImageView);
+ PL_VK_FUN(DestroyInstance);
+ PL_VK_FUN(DestroyPipeline);
+ PL_VK_FUN(DestroyPipelineCache);
+ PL_VK_FUN(DestroyPipelineLayout);
+ PL_VK_FUN(DestroyQueryPool);
+ PL_VK_FUN(DestroyRenderPass);
+ PL_VK_FUN(DestroySampler);
+ PL_VK_FUN(DestroySemaphore);
+ PL_VK_FUN(DestroyShaderModule);
+ PL_VK_FUN(DestroySwapchainKHR);
+ PL_VK_FUN(DeviceWaitIdle);
+ PL_VK_FUN(EndCommandBuffer);
+ PL_VK_FUN(FlushMappedMemoryRanges);
+ PL_VK_FUN(FreeCommandBuffers);
+ PL_VK_FUN(FreeMemory);
+ PL_VK_FUN(GetBufferMemoryRequirements);
+ PL_VK_FUN(GetDeviceQueue);
+ PL_VK_FUN(GetImageDrmFormatModifierPropertiesEXT);
+ PL_VK_FUN(GetImageMemoryRequirements2);
+ PL_VK_FUN(GetImageSubresourceLayout);
+ PL_VK_FUN(GetMemoryFdKHR);
+ PL_VK_FUN(GetMemoryFdPropertiesKHR);
+ PL_VK_FUN(GetMemoryHostPointerPropertiesEXT);
+ PL_VK_FUN(GetPipelineCacheData);
+ PL_VK_FUN(GetQueryPoolResults);
+ PL_VK_FUN(GetSemaphoreFdKHR);
+ PL_VK_FUN(GetSwapchainImagesKHR);
+ PL_VK_FUN(InvalidateMappedMemoryRanges);
+ PL_VK_FUN(MapMemory);
+ PL_VK_FUN(QueuePresentKHR);
+ PL_VK_FUN(QueueSubmit);
+ PL_VK_FUN(QueueSubmit2KHR);
+ PL_VK_FUN(QueueWaitIdle);
+ PL_VK_FUN(ResetFences);
+ PL_VK_FUN(ResetQueryPool);
+ PL_VK_FUN(SetDebugUtilsObjectNameEXT);
+ PL_VK_FUN(SetHdrMetadataEXT);
+ PL_VK_FUN(UpdateDescriptorSets);
+ PL_VK_FUN(WaitForFences);
+ PL_VK_FUN(WaitSemaphores);
+
+#ifdef PL_HAVE_WIN32
+ PL_VK_FUN(GetMemoryWin32HandleKHR);
+ PL_VK_FUN(GetSemaphoreWin32HandleKHR);
+#endif
+
+#ifdef VK_EXT_metal_objects
+ PL_VK_FUN(ExportMetalObjectsEXT);
+#endif
+#ifdef VK_EXT_full_screen_exclusive
+ PL_VK_FUN(AcquireFullScreenExclusiveModeEXT);
+#endif
+};