diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index 273cdd5..9ed992b 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -636,7 +636,6 @@
             case ProcHook::EXT_swapchain_colorspace:
             case ProcHook::KHR_get_surface_capabilities2:
             case ProcHook::GOOGLE_surfaceless_query:
-            case ProcHook::EXT_surface_maintenance1:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
@@ -658,11 +657,9 @@
             case ProcHook::KHR_shared_presentable_image:
             case ProcHook::KHR_swapchain:
             case ProcHook::EXT_hdr_metadata:
-            case ProcHook::EXT_swapchain_maintenance1:
             case ProcHook::ANDROID_external_memory_android_hardware_buffer:
             case ProcHook::ANDROID_native_buffer:
             case ProcHook::GOOGLE_display_timing:
-            case ProcHook::KHR_external_fence_fd:
             case ProcHook::EXTENSION_CORE_1_0:
             case ProcHook::EXTENSION_CORE_1_1:
             case ProcHook::EXTENSION_CORE_1_2:
@@ -693,22 +690,16 @@
                 ext_bit = ProcHook::ANDROID_native_buffer;
                 break;
             case ProcHook::KHR_incremental_present:
-            case ProcHook::KHR_shared_presentable_image:
             case ProcHook::GOOGLE_display_timing:
+            case ProcHook::KHR_shared_presentable_image:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
-            case ProcHook::EXT_swapchain_maintenance1:
-                // map VK_KHR_swapchain_maintenance1 to KHR_external_fence_fd
-                name = VK_KHR_EXTERNAL_FENCE_FD_EXTENSION_NAME;
-                ext_bit = ProcHook::KHR_external_fence_fd;
-                break;
             case ProcHook::EXT_hdr_metadata:
             case ProcHook::KHR_bind_memory2:
                 hook_extensions_.set(ext_bit);
                 break;
             case ProcHook::ANDROID_external_memory_android_hardware_buffer:
-            case ProcHook::KHR_external_fence_fd:
             case ProcHook::EXTENSION_UNKNOWN:
                 // Extensions we don't need to do anything about at this level
                 break;
@@ -724,7 +715,6 @@
             case ProcHook::KHR_surface_protected_capabilities:
             case ProcHook::EXT_debug_report:
             case ProcHook::EXT_swapchain_colorspace:
-            case ProcHook::EXT_surface_maintenance1:
             case ProcHook::GOOGLE_surfaceless_query:
             case ProcHook::ANDROID_native_buffer:
             case ProcHook::EXTENSION_CORE_1_0:
@@ -757,18 +747,10 @@
         if (strcmp(name, props.extensionName) != 0)
             continue;
 
-        if (ext_bit != ProcHook::EXTENSION_UNKNOWN &&
-                hal_extensions_.test(ext_bit)) {
-            ALOGI("CreateInfoWrapper::FilterExtension: already have '%s'.", name);
-            continue;
-        }
-
         filter.names[filter.name_count++] = name;
         if (ext_bit != ProcHook::EXTENSION_UNKNOWN) {
             if (ext_bit == ProcHook::ANDROID_native_buffer)
                 hook_extensions_.set(ProcHook::KHR_swapchain);
-            if (ext_bit == ProcHook::KHR_external_fence_fd)
-                hook_extensions_.set(ProcHook::EXT_swapchain_maintenance1);
 
             hal_extensions_.set(ext_bit);
         }
@@ -958,9 +940,6 @@
          VK_KHR_GET_SURFACE_CAPABILITIES_2_SPEC_VERSION});
     loader_extensions.push_back({VK_GOOGLE_SURFACELESS_QUERY_EXTENSION_NAME,
                                  VK_GOOGLE_SURFACELESS_QUERY_SPEC_VERSION});
-    loader_extensions.push_back({
-        VK_EXT_SURFACE_MAINTENANCE_1_EXTENSION_NAME,
-        VK_EXT_SURFACE_MAINTENANCE_1_SPEC_VERSION});
 
     static const VkExtensionProperties loader_debug_report_extension = {
         VK_EXT_DEBUG_REPORT_EXTENSION_NAME, VK_EXT_DEBUG_REPORT_SPEC_VERSION,
@@ -1093,33 +1072,6 @@
     return result;
 }
 
-bool CanSupportSwapchainMaintenance1Extension(VkPhysicalDevice physicalDevice) {
-    const auto& driver = GetData(physicalDevice).driver;
-    if (!driver.GetPhysicalDeviceExternalFenceProperties)
-        return false;
-
-    // Requires support for external fences imported from sync fds.
-    // This is _almost_ universal on Android, but may be missing on
-    // some extremely old drivers, or on strange implementations like
-    // cuttlefish.
-    VkPhysicalDeviceExternalFenceInfo fenceInfo = {
-        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_FENCE_INFO,
-        nullptr,
-        VK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT
-    };
-    VkExternalFenceProperties fenceProperties = {
-        VK_STRUCTURE_TYPE_EXTERNAL_FENCE_PROPERTIES,
-        nullptr,
-        0, 0, 0
-    };
-
-    GetPhysicalDeviceExternalFenceProperties(physicalDevice, &fenceInfo, &fenceProperties);
-    if (fenceProperties.externalFenceFeatures & VK_EXTERNAL_FENCE_FEATURE_IMPORTABLE_BIT)
-        return true;
-
-    return false;
-}
-
 VkResult EnumerateDeviceExtensionProperties(
     VkPhysicalDevice physicalDevice,
     const char* pLayerName,
@@ -1197,12 +1149,6 @@
              VK_EXT_IMAGE_COMPRESSION_CONTROL_SWAPCHAIN_SPEC_VERSION});
     }
 
-    if (CanSupportSwapchainMaintenance1Extension(physicalDevice)) {
-        loader_extensions.push_back({
-                VK_EXT_SWAPCHAIN_MAINTENANCE_1_EXTENSION_NAME,
-                VK_EXT_SWAPCHAIN_MAINTENANCE_1_SPEC_VERSION});
-    }
-
     // enumerate our extensions first
     if (!pLayerName && pProperties) {
         uint32_t count = std::min(
@@ -1698,12 +1644,6 @@
                 imageCompressionControlSwapchainInChain = true;
             } break;
 
-            case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SWAPCHAIN_MAINTENANCE_1_FEATURES_EXT: {
-                auto smf = reinterpret_cast<VkPhysicalDeviceSwapchainMaintenance1FeaturesEXT *>(
-                        pFeats);
-                smf->swapchainMaintenance1 = true;
-            } break;
-
             default:
                 break;
         }
diff --git a/vulkan/libvulkan/driver_gen.cpp b/vulkan/libvulkan/driver_gen.cpp
index 798af5c..de98aa7 100644
--- a/vulkan/libvulkan/driver_gen.cpp
+++ b/vulkan/libvulkan/driver_gen.cpp
@@ -162,15 +162,6 @@
     }
 }
 
-VKAPI_ATTR VkResult checkedReleaseSwapchainImagesEXT(VkDevice device, const VkReleaseSwapchainImagesInfoEXT* pReleaseInfo) {
-    if (GetData(device).hook_extensions[ProcHook::EXT_swapchain_maintenance1]) {
-        return ReleaseSwapchainImagesEXT(device, pReleaseInfo);
-    } else {
-        Logger(device).Err(device, "VK_EXT_swapchain_maintenance1 not enabled. vkReleaseSwapchainImagesEXT not executed.");
-        return VK_SUCCESS;
-    }
-}
-
 // clang-format on
 
 const ProcHook g_proc_hooks[] = {
@@ -554,13 +545,6 @@
         nullptr,
     },
     {
-        "vkReleaseSwapchainImagesEXT",
-        ProcHook::DEVICE,
-        ProcHook::EXT_swapchain_maintenance1,
-        reinterpret_cast<PFN_vkVoidFunction>(ReleaseSwapchainImagesEXT),
-        reinterpret_cast<PFN_vkVoidFunction>(checkedReleaseSwapchainImagesEXT),
-    },
-    {
         "vkSetHdrMetadataEXT",
         ProcHook::DEVICE,
         ProcHook::EXT_hdr_metadata,
@@ -596,8 +580,6 @@
     if (strcmp(name, "VK_KHR_surface") == 0) return ProcHook::KHR_surface;
     if (strcmp(name, "VK_KHR_surface_protected_capabilities") == 0) return ProcHook::KHR_surface_protected_capabilities;
     if (strcmp(name, "VK_KHR_swapchain") == 0) return ProcHook::KHR_swapchain;
-    if (strcmp(name, "VK_EXT_swapchain_maintenance1") == 0) return ProcHook::EXT_swapchain_maintenance1;
-    if (strcmp(name, "VK_EXT_surface_maintenance1") == 0) return ProcHook::EXT_surface_maintenance1;
     if (strcmp(name, "VK_ANDROID_external_memory_android_hardware_buffer") == 0) return ProcHook::ANDROID_external_memory_android_hardware_buffer;
     if (strcmp(name, "VK_KHR_bind_memory2") == 0) return ProcHook::KHR_bind_memory2;
     if (strcmp(name, "VK_KHR_get_physical_device_properties2") == 0) return ProcHook::KHR_get_physical_device_properties2;
@@ -605,7 +587,6 @@
     if (strcmp(name, "VK_KHR_external_memory_capabilities") == 0) return ProcHook::KHR_external_memory_capabilities;
     if (strcmp(name, "VK_KHR_external_semaphore_capabilities") == 0) return ProcHook::KHR_external_semaphore_capabilities;
     if (strcmp(name, "VK_KHR_external_fence_capabilities") == 0) return ProcHook::KHR_external_fence_capabilities;
-    if (strcmp(name, "VK_KHR_external_fence_fd") == 0) return ProcHook::KHR_external_fence_fd;
     // clang-format on
     return ProcHook::EXTENSION_UNKNOWN;
 }
@@ -685,7 +666,6 @@
     INIT_PROC(true, dev, CreateImage);
     INIT_PROC(true, dev, DestroyImage);
     INIT_PROC(true, dev, AllocateCommandBuffers);
-    INIT_PROC_EXT(KHR_external_fence_fd, true, dev, ImportFenceFdKHR);
     INIT_PROC(false, dev, BindImageMemory2);
     INIT_PROC_EXT(KHR_bind_memory2, true, dev, BindImageMemory2KHR);
     INIT_PROC(false, dev, GetDeviceQueue2);
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index 31ba04b..2f60086 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -49,8 +49,6 @@
         KHR_surface,
         KHR_surface_protected_capabilities,
         KHR_swapchain,
-        EXT_swapchain_maintenance1,
-        EXT_surface_maintenance1,
         ANDROID_external_memory_android_hardware_buffer,
         KHR_bind_memory2,
         KHR_get_physical_device_properties2,
@@ -58,7 +56,6 @@
         KHR_external_memory_capabilities,
         KHR_external_semaphore_capabilities,
         KHR_external_fence_capabilities,
-        KHR_external_fence_fd,
 
         EXTENSION_CORE_1_0,
         EXTENSION_CORE_1_1,
@@ -121,7 +118,6 @@
     PFN_vkCreateImage CreateImage;
     PFN_vkDestroyImage DestroyImage;
     PFN_vkAllocateCommandBuffers AllocateCommandBuffers;
-    PFN_vkImportFenceFdKHR ImportFenceFdKHR;
     PFN_vkBindImageMemory2 BindImageMemory2;
     PFN_vkBindImageMemory2KHR BindImageMemory2KHR;
     PFN_vkGetDeviceQueue2 GetDeviceQueue2;
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 1bff50d..b03200e 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -291,9 +291,6 @@
               release_fence(-1),
               dequeued(false) {}
         VkImage image;
-        // If the image is bound to memory, an sp to the underlying gralloc buffer.
-        // Otherwise, nullptr; the image will be bound to memory as part of
-        // AcquireNextImage.
         android::sp<ANativeWindowBuffer> buffer;
         // The fence is only valid when the buffer is dequeued, and should be
         // -1 any other time. When valid, we own the fd, and must ensure it is
@@ -659,40 +656,100 @@
     VkSurfaceCapabilitiesKHR* capabilities) {
     ATRACE_CALL();
 
-    // Implement in terms of GetPhysicalDeviceSurfaceCapabilities2KHR
-
-    VkPhysicalDeviceSurfaceInfo2KHR info2 = {
-        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SURFACE_INFO_2_KHR,
-        nullptr,
-        surface
-    };
-
-    VkSurfaceCapabilities2KHR caps2 = {
-        VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR,
-        nullptr,
-        {},
-    };
-
-    VkResult result = GetPhysicalDeviceSurfaceCapabilities2KHR(pdev, &info2, &caps2);
-    *capabilities = caps2.surfaceCapabilities;
-    return result;
-}
-
-// Does the call-twice and VK_INCOMPLETE handling for querying lists
-// of things, where we already have the full set built in a vector.
-template <typename T>
-VkResult CopyWithIncomplete(std::vector<T> const& things,
-        T* callerPtr, uint32_t* callerCount) {
-    VkResult result = VK_SUCCESS;
-    if (callerPtr) {
-        if (things.size() > *callerCount)
-            result = VK_INCOMPLETE;
-        *callerCount = std::min(uint32_t(things.size()), *callerCount);
-        std::copy(things.begin(), things.begin() + *callerCount, callerPtr);
+    int err;
+    int width, height;
+    int transform_hint;
+    int max_buffer_count;
+    if (surface == VK_NULL_HANDLE) {
+        const InstanceData& instance_data = GetData(pdev);
+        ProcHook::Extension surfaceless = ProcHook::GOOGLE_surfaceless_query;
+        bool surfaceless_enabled =
+            instance_data.hook_extensions.test(surfaceless);
+        if (!surfaceless_enabled) {
+            // It is an error to pass a surface==VK_NULL_HANDLE unless the
+            // VK_GOOGLE_surfaceless_query extension is enabled
+            return VK_ERROR_SURFACE_LOST_KHR;
+        }
+        // Support for VK_GOOGLE_surfaceless_query.  The primary purpose of this
+        // extension for this function is for
+        // VkSurfaceProtectedCapabilitiesKHR::supportsProtected.  The following
+        // four values cannot be known without a surface.  Default values will
+        // be supplied anyway, but cannot be relied upon.
+        width = 0xFFFFFFFF;
+        height = 0xFFFFFFFF;
+        transform_hint = VK_SURFACE_TRANSFORM_INHERIT_BIT_KHR;
+        capabilities->minImageCount = 0xFFFFFFFF;
+        capabilities->maxImageCount = 0xFFFFFFFF;
     } else {
-        *callerCount = things.size();
+        ANativeWindow* window = SurfaceFromHandle(surface)->window.get();
+
+        err = window->query(window, NATIVE_WINDOW_DEFAULT_WIDTH, &width);
+        if (err != android::OK) {
+            ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
+                  strerror(-err), err);
+            return VK_ERROR_SURFACE_LOST_KHR;
+        }
+        err = window->query(window, NATIVE_WINDOW_DEFAULT_HEIGHT, &height);
+        if (err != android::OK) {
+            ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
+                  strerror(-err), err);
+            return VK_ERROR_SURFACE_LOST_KHR;
+        }
+
+        err = window->query(window, NATIVE_WINDOW_TRANSFORM_HINT,
+                            &transform_hint);
+        if (err != android::OK) {
+            ALOGE("NATIVE_WINDOW_TRANSFORM_HINT query failed: %s (%d)",
+                  strerror(-err), err);
+            return VK_ERROR_SURFACE_LOST_KHR;
+        }
+
+        err = window->query(window, NATIVE_WINDOW_MAX_BUFFER_COUNT,
+                            &max_buffer_count);
+        if (err != android::OK) {
+            ALOGE("NATIVE_WINDOW_MAX_BUFFER_COUNT query failed: %s (%d)",
+                  strerror(-err), err);
+            return VK_ERROR_SURFACE_LOST_KHR;
+        }
+        capabilities->minImageCount = std::min(max_buffer_count, 3);
+        capabilities->maxImageCount = static_cast<uint32_t>(max_buffer_count);
     }
-    return result;
+
+    capabilities->currentExtent =
+        VkExtent2D{static_cast<uint32_t>(width), static_cast<uint32_t>(height)};
+
+    // TODO(http://b/134182502): Figure out what the max extent should be.
+    capabilities->minImageExtent = VkExtent2D{1, 1};
+    capabilities->maxImageExtent = VkExtent2D{4096, 4096};
+
+    if (capabilities->maxImageExtent.height <
+        capabilities->currentExtent.height) {
+        capabilities->maxImageExtent.height =
+            capabilities->currentExtent.height;
+    }
+
+    if (capabilities->maxImageExtent.width <
+        capabilities->currentExtent.width) {
+        capabilities->maxImageExtent.width = capabilities->currentExtent.width;
+    }
+
+    capabilities->maxImageArrayLayers = 1;
+
+    capabilities->supportedTransforms = kSupportedTransforms;
+    capabilities->currentTransform =
+        TranslateNativeToVulkanTransform(transform_hint);
+
+    // On Android, window composition is a WindowManager property, not something
+    // associated with the bufferqueue. It can't be changed from here.
+    capabilities->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR;
+
+    capabilities->supportedUsageFlags =
+        VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT |
+        VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT |
+        VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
+        VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
+
+    return VK_SUCCESS;
 }
 
 VKAPI_ATTR
@@ -825,7 +882,21 @@
     // Android users.  This includes the ANGLE team (a layered implementation of
     // OpenGL-ES).
 
-    return CopyWithIncomplete(all_formats, formats, count);
+    VkResult result = VK_SUCCESS;
+    if (formats) {
+        uint32_t transfer_count = all_formats.size();
+        if (transfer_count > *count) {
+            transfer_count = *count;
+            result = VK_INCOMPLETE;
+        }
+        std::copy(all_formats.begin(), all_formats.begin() + transfer_count,
+                  formats);
+        *count = transfer_count;
+    } else {
+        *count = all_formats.size();
+    }
+
+    return result;
 }
 
 VKAPI_ATTR
@@ -835,134 +906,19 @@
     VkSurfaceCapabilities2KHR* pSurfaceCapabilities) {
     ATRACE_CALL();
 
-    auto surface = pSurfaceInfo->surface;
-    auto capabilities = &pSurfaceCapabilities->surfaceCapabilities;
+    VkResult result = GetPhysicalDeviceSurfaceCapabilitiesKHR(
+        physicalDevice, pSurfaceInfo->surface,
+        &pSurfaceCapabilities->surfaceCapabilities);
 
-    VkSurfacePresentModeEXT const *pPresentMode = nullptr;
-    for (auto pNext = reinterpret_cast<VkBaseInStructure const *>(pSurfaceInfo->pNext);
-            pNext; pNext = reinterpret_cast<VkBaseInStructure const *>(pNext->pNext)) {
-        switch (pNext->sType) {
-            case VK_STRUCTURE_TYPE_SURFACE_PRESENT_MODE_EXT:
-                pPresentMode = reinterpret_cast<VkSurfacePresentModeEXT const *>(pNext);
-                break;
+    VkSurfaceCapabilities2KHR* caps = pSurfaceCapabilities;
+    while (caps->pNext) {
+        caps = reinterpret_cast<VkSurfaceCapabilities2KHR*>(caps->pNext);
 
-            default:
-                break;
-        }
-    }
-
-    int err;
-    int width, height;
-    int transform_hint;
-    int max_buffer_count;
-    if (surface == VK_NULL_HANDLE) {
-        const InstanceData& instance_data = GetData(physicalDevice);
-        ProcHook::Extension surfaceless = ProcHook::GOOGLE_surfaceless_query;
-        bool surfaceless_enabled =
-            instance_data.hook_extensions.test(surfaceless);
-        if (!surfaceless_enabled) {
-            // It is an error to pass a surface==VK_NULL_HANDLE unless the
-            // VK_GOOGLE_surfaceless_query extension is enabled
-            return VK_ERROR_SURFACE_LOST_KHR;
-        }
-        // Support for VK_GOOGLE_surfaceless_query.  The primary purpose of this
-        // extension for this function is for
-        // VkSurfaceProtectedCapabilitiesKHR::supportsProtected.  The following
-        // four values cannot be known without a surface.  Default values will
-        // be supplied anyway, but cannot be relied upon.
-        width = 0xFFFFFFFF;
-        height = 0xFFFFFFFF;
-        transform_hint = VK_SURFACE_TRANSFORM_INHERIT_BIT_KHR;
-        capabilities->minImageCount = 0xFFFFFFFF;
-        capabilities->maxImageCount = 0xFFFFFFFF;
-    } else {
-        ANativeWindow* window = SurfaceFromHandle(surface)->window.get();
-
-        err = window->query(window, NATIVE_WINDOW_DEFAULT_WIDTH, &width);
-        if (err != android::OK) {
-            ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
-                  strerror(-err), err);
-            return VK_ERROR_SURFACE_LOST_KHR;
-        }
-        err = window->query(window, NATIVE_WINDOW_DEFAULT_HEIGHT, &height);
-        if (err != android::OK) {
-            ALOGE("NATIVE_WINDOW_DEFAULT_WIDTH query failed: %s (%d)",
-                  strerror(-err), err);
-            return VK_ERROR_SURFACE_LOST_KHR;
-        }
-
-        err = window->query(window, NATIVE_WINDOW_TRANSFORM_HINT,
-                            &transform_hint);
-        if (err != android::OK) {
-            ALOGE("NATIVE_WINDOW_TRANSFORM_HINT query failed: %s (%d)",
-                  strerror(-err), err);
-            return VK_ERROR_SURFACE_LOST_KHR;
-        }
-
-        err = window->query(window, NATIVE_WINDOW_MAX_BUFFER_COUNT,
-                            &max_buffer_count);
-        if (err != android::OK) {
-            ALOGE("NATIVE_WINDOW_MAX_BUFFER_COUNT query failed: %s (%d)",
-                  strerror(-err), err);
-            return VK_ERROR_SURFACE_LOST_KHR;
-        }
-
-        if (pPresentMode && IsSharedPresentMode(pPresentMode->presentMode)) {
-            capabilities->minImageCount = 1;
-            capabilities->maxImageCount = 1;
-        } else if (pPresentMode && pPresentMode->presentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
-            // TODO: use undequeued buffer requirement for more precise bound
-            capabilities->minImageCount = std::min(max_buffer_count, 4);
-            capabilities->maxImageCount = static_cast<uint32_t>(max_buffer_count);
-        } else {
-            // TODO: if we're able to, provide better bounds on the number of buffers
-            // for other modes as well.
-            capabilities->minImageCount = std::min(max_buffer_count, 3);
-            capabilities->maxImageCount = static_cast<uint32_t>(max_buffer_count);
-        }
-    }
-
-    capabilities->currentExtent =
-        VkExtent2D{static_cast<uint32_t>(width), static_cast<uint32_t>(height)};
-
-    // TODO(http://b/134182502): Figure out what the max extent should be.
-    capabilities->minImageExtent = VkExtent2D{1, 1};
-    capabilities->maxImageExtent = VkExtent2D{4096, 4096};
-
-    if (capabilities->maxImageExtent.height <
-        capabilities->currentExtent.height) {
-        capabilities->maxImageExtent.height =
-            capabilities->currentExtent.height;
-    }
-
-    if (capabilities->maxImageExtent.width <
-        capabilities->currentExtent.width) {
-        capabilities->maxImageExtent.width = capabilities->currentExtent.width;
-    }
-
-    capabilities->maxImageArrayLayers = 1;
-
-    capabilities->supportedTransforms = kSupportedTransforms;
-    capabilities->currentTransform =
-        TranslateNativeToVulkanTransform(transform_hint);
-
-    // On Android, window composition is a WindowManager property, not something
-    // associated with the bufferqueue. It can't be changed from here.
-    capabilities->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR;
-
-    capabilities->supportedUsageFlags =
-        VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT |
-        VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT |
-        VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
-        VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
-
-    for (auto pNext = reinterpret_cast<VkBaseOutStructure*>(pSurfaceCapabilities->pNext);
-            pNext; pNext = reinterpret_cast<VkBaseOutStructure*>(pNext->pNext)) {
-
-        switch (pNext->sType) {
+        switch (caps->sType) {
             case VK_STRUCTURE_TYPE_SHARED_PRESENT_SURFACE_CAPABILITIES_KHR: {
                 VkSharedPresentSurfaceCapabilitiesKHR* shared_caps =
-                    reinterpret_cast<VkSharedPresentSurfaceCapabilitiesKHR*>(pNext);
+                    reinterpret_cast<VkSharedPresentSurfaceCapabilitiesKHR*>(
+                        caps);
                 // Claim same set of usage flags are supported for
                 // shared present modes as for other modes.
                 shared_caps->sharedPresentSupportedUsageFlags =
@@ -972,64 +928,17 @@
 
             case VK_STRUCTURE_TYPE_SURFACE_PROTECTED_CAPABILITIES_KHR: {
                 VkSurfaceProtectedCapabilitiesKHR* protected_caps =
-                    reinterpret_cast<VkSurfaceProtectedCapabilitiesKHR*>(pNext);
+                    reinterpret_cast<VkSurfaceProtectedCapabilitiesKHR*>(caps);
                 protected_caps->supportsProtected = VK_TRUE;
             } break;
 
-            case VK_STRUCTURE_TYPE_SURFACE_PRESENT_SCALING_CAPABILITIES_EXT: {
-                VkSurfacePresentScalingCapabilitiesEXT* scaling_caps =
-                    reinterpret_cast<VkSurfacePresentScalingCapabilitiesEXT*>(pNext);
-                // By default, Android stretches the buffer to fit the window,
-                // without preserving aspect ratio. Other modes are technically possible
-                // but consult with CoGS team before exposing them here!
-                scaling_caps->supportedPresentScaling = VK_PRESENT_SCALING_STRETCH_BIT_EXT;
-
-                // Since we always scale, we don't support any gravity.
-                scaling_caps->supportedPresentGravityX = 0;
-                scaling_caps->supportedPresentGravityY = 0;
-
-                // Scaled image limits are just the basic image limits
-                scaling_caps->minScaledImageExtent = capabilities->minImageExtent;
-                scaling_caps->maxScaledImageExtent = capabilities->maxImageExtent;
-            } break;
-
-            case VK_STRUCTURE_TYPE_SURFACE_PRESENT_MODE_COMPATIBILITY_EXT: {
-                VkSurfacePresentModeCompatibilityEXT* mode_caps =
-                    reinterpret_cast<VkSurfacePresentModeCompatibilityEXT*>(pNext);
-
-                ALOG_ASSERT(pPresentMode,
-                        "querying VkSurfacePresentModeCompatibilityEXT "
-                        "requires VkSurfacePresentModeEXT to be provided");
-                std::vector<VkPresentModeKHR> compatibleModes;
-                compatibleModes.push_back(pPresentMode->presentMode);
-
-                switch (pPresentMode->presentMode) {
-                    // Shared modes are both compatible with each other.
-                    case VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR:
-                        compatibleModes.push_back(VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR);
-                        break;
-                    case VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR:
-                        compatibleModes.push_back(VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR);
-                        break;
-                    default:
-                        // Other modes are only compatible with themselves.
-                        // TODO: consider whether switching between FIFO and MAILBOX is reasonable
-                        break;
-                }
-
-                // Note: this does not generate VK_INCOMPLETE since we're nested inside
-                // a larger query and there would be no way to determine exactly where it came from.
-                CopyWithIncomplete(compatibleModes, mode_caps->pPresentModes,
-                        &mode_caps->presentModeCount);
-            } break;
-
             default:
                 // Ignore all other extension structs
                 break;
         }
     }
 
-    return VK_SUCCESS;
+    return result;
 }
 
 VKAPI_ATTR
@@ -1188,7 +1097,18 @@
         present_modes.push_back(VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR);
     }
 
-    return CopyWithIncomplete(present_modes, modes, count);
+    uint32_t num_modes = uint32_t(present_modes.size());
+
+    VkResult result = VK_SUCCESS;
+    if (modes) {
+        if (*count < num_modes)
+            result = VK_INCOMPLETE;
+        *count = std::min(*count, num_modes);
+        std::copy_n(present_modes.data(), *count, modes);
+    } else {
+        *count = num_modes;
+    }
+    return result;
 }
 
 VKAPI_ATTR
@@ -1474,7 +1394,8 @@
     }
 
     VkSwapchainImageUsageFlagsANDROID swapchain_image_usage = 0;
-    if (IsSharedPresentMode(create_info->presentMode)) {
+    if (create_info->presentMode == VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR ||
+        create_info->presentMode == VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR) {
         swapchain_image_usage |= VK_SWAPCHAIN_IMAGE_USAGE_SHARED_BIT_ANDROID;
         err = native_window_set_shared_buffer_mode(window, true);
         if (err != android::OK) {
@@ -1624,6 +1545,8 @@
     Swapchain* swapchain = new (mem)
         Swapchain(surface, num_images, create_info->presentMode,
                   TranslateVulkanToNativeTransform(create_info->preTransform));
+    // -- Dequeue all buffers and create a VkImage for each --
+    // Any failures during or after this must cancel the dequeued buffers.
 
     VkSwapchainImageCreateInfoANDROID swapchain_image_create = {
 #pragma clang diagnostic push
@@ -1640,18 +1563,13 @@
 #pragma clang diagnostic pop
         .pNext = &swapchain_image_create,
     };
-
     VkImageCreateInfo image_create = {
         .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
-        .pNext = nullptr,
+        .pNext = &image_native_buffer,
         .flags = createProtectedSwapchain ? VK_IMAGE_CREATE_PROTECTED_BIT : 0u,
         .imageType = VK_IMAGE_TYPE_2D,
         .format = create_info->imageFormat,
-        .extent = {
-            create_info->imageExtent.width,
-            create_info->imageExtent.height,
-            1
-        },
+        .extent = {0, 0, 1},
         .mipLevels = 1,
         .arrayLayers = 1,
         .samples = VK_SAMPLE_COUNT_1_BIT,
@@ -1662,87 +1580,60 @@
         .pQueueFamilyIndices = create_info->pQueueFamilyIndices,
     };
 
-    // Note: don't do deferred allocation for shared present modes. There's only one buffer
-    // involved so very little benefit.
-    if ((create_info->flags & VK_SWAPCHAIN_CREATE_DEFERRED_MEMORY_ALLOCATION_BIT_EXT) &&
-            !IsSharedPresentMode(create_info->presentMode)) {
-        // Don't want to touch the underlying gralloc buffers yet;
-        // instead just create unbound VkImages which will later be bound to memory inside
-        // AcquireNextImage.
-        VkImageSwapchainCreateInfoKHR image_swapchain_create = {
-            .sType = VK_STRUCTURE_TYPE_IMAGE_SWAPCHAIN_CREATE_INFO_KHR,
-            .pNext = nullptr,
-            .swapchain = HandleFromSwapchain(swapchain),
-        };
-        image_create.pNext = &image_swapchain_create;
+    for (uint32_t i = 0; i < num_images; i++) {
+        Swapchain::Image& img = swapchain->images[i];
 
-        for (uint32_t i = 0; i < num_images; i++) {
-            Swapchain::Image& img = swapchain->images[i];
-            img.buffer = nullptr;
-            img.dequeued = false;
-
-            result = dispatch.CreateImage(device, &image_create, nullptr, &img.image);
-            if (result != VK_SUCCESS) {
-                ALOGD("vkCreateImage w/ for deferred swapchain image failed: %u", result);
-                break;
+        ANativeWindowBuffer* buffer;
+        err = window->dequeueBuffer(window, &buffer, &img.dequeue_fence);
+        if (err != android::OK) {
+            ALOGE("dequeueBuffer[%u] failed: %s (%d)", i, strerror(-err), err);
+            switch (-err) {
+                case ENOMEM:
+                    result = VK_ERROR_OUT_OF_DEVICE_MEMORY;
+                    break;
+                default:
+                    result = VK_ERROR_SURFACE_LOST_KHR;
+                    break;
             }
+            break;
         }
-    } else {
-        // -- Dequeue all buffers and create a VkImage for each --
-        // Any failures during or after this must cancel the dequeued buffers.
+        img.buffer = buffer;
+        img.dequeued = true;
 
-        for (uint32_t i = 0; i < num_images; i++) {
-            Swapchain::Image& img = swapchain->images[i];
+        image_create.extent =
+            VkExtent3D{static_cast<uint32_t>(img.buffer->width),
+                       static_cast<uint32_t>(img.buffer->height),
+                       1};
+        image_native_buffer.handle = img.buffer->handle;
+        image_native_buffer.stride = img.buffer->stride;
+        image_native_buffer.format = img.buffer->format;
+        image_native_buffer.usage = int(img.buffer->usage);
+        android_convertGralloc0To1Usage(int(img.buffer->usage),
+            &image_native_buffer.usage2.producer,
+            &image_native_buffer.usage2.consumer);
+        image_native_buffer.usage3 = img.buffer->usage;
 
-            ANativeWindowBuffer* buffer;
-            err = window->dequeueBuffer(window, &buffer, &img.dequeue_fence);
-            if (err != android::OK) {
-                ALOGE("dequeueBuffer[%u] failed: %s (%d)", i, strerror(-err), err);
-                switch (-err) {
-                    case ENOMEM:
-                        result = VK_ERROR_OUT_OF_DEVICE_MEMORY;
-                        break;
-                    default:
-                        result = VK_ERROR_SURFACE_LOST_KHR;
-                        break;
-                }
-                break;
-            }
-            img.buffer = buffer;
-            img.dequeued = true;
-
-            image_native_buffer.handle = img.buffer->handle;
-            image_native_buffer.stride = img.buffer->stride;
-            image_native_buffer.format = img.buffer->format;
-            image_native_buffer.usage = int(img.buffer->usage);
-            android_convertGralloc0To1Usage(int(img.buffer->usage),
-                &image_native_buffer.usage2.producer,
-                &image_native_buffer.usage2.consumer);
-            image_native_buffer.usage3 = img.buffer->usage;
-            image_create.pNext = &image_native_buffer;
-
-            ATRACE_BEGIN("CreateImage");
-            result =
-                dispatch.CreateImage(device, &image_create, nullptr, &img.image);
-            ATRACE_END();
-            if (result != VK_SUCCESS) {
-                ALOGD("vkCreateImage w/ native buffer failed: %u", result);
-                break;
-            }
+        ATRACE_BEGIN("CreateImage");
+        result =
+            dispatch.CreateImage(device, &image_create, nullptr, &img.image);
+        ATRACE_END();
+        if (result != VK_SUCCESS) {
+            ALOGD("vkCreateImage w/ native buffer failed: %u", result);
+            break;
         }
+    }
 
-        // -- Cancel all buffers, returning them to the queue --
-        // If an error occurred before, also destroy the VkImage and release the
-        // buffer reference. Otherwise, we retain a strong reference to the buffer.
-        for (uint32_t i = 0; i < num_images; i++) {
-            Swapchain::Image& img = swapchain->images[i];
-            if (img.dequeued) {
-                if (!swapchain->shared) {
-                    window->cancelBuffer(window, img.buffer.get(),
-                                         img.dequeue_fence);
-                    img.dequeue_fence = -1;
-                    img.dequeued = false;
-                }
+    // -- Cancel all buffers, returning them to the queue --
+    // If an error occurred before, also destroy the VkImage and release the
+    // buffer reference. Otherwise, we retain a strong reference to the buffer.
+    for (uint32_t i = 0; i < num_images; i++) {
+        Swapchain::Image& img = swapchain->images[i];
+        if (img.dequeued) {
+            if (!swapchain->shared) {
+                window->cancelBuffer(window, img.buffer.get(),
+                                     img.dequeue_fence);
+                img.dequeue_fence = -1;
+                img.dequeued = false;
             }
         }
     }
@@ -1865,64 +1756,6 @@
             break;
         }
     }
-
-    // If this is a deferred alloc swapchain, this may be the first time we've
-    // seen a particular buffer. If so, there should be an empty slot. Find it,
-    // and bind the gralloc buffer to the VkImage for that slot. If there is no
-    // empty slot, then we dequeued an unexpected buffer. Non-deferred swapchains
-    // will also take this path, but will never have an empty slot since we
-    // populated them all upfront.
-    if (idx == swapchain.num_images) {
-        for (idx = 0; idx < swapchain.num_images; idx++) {
-            if (!swapchain.images[idx].buffer) {
-                // Note: this structure is technically required for
-                // Vulkan correctness, even though the driver is probably going
-                // to use everything from the VkNativeBufferANDROID below.
-                // This is kindof silly, but it's how we did the ANB
-                // side of VK_KHR_swapchain v69, so we're stuck with it unless
-                // we want to go tinkering with the ANB spec some more.
-                VkBindImageMemorySwapchainInfoKHR bimsi = {
-                    .sType = VK_STRUCTURE_TYPE_BIND_IMAGE_MEMORY_SWAPCHAIN_INFO_KHR,
-                    .pNext = nullptr,
-                    .swapchain = swapchain_handle,
-                    .imageIndex = idx,
-                };
-                VkNativeBufferANDROID nb = {
-                    .sType = VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID,
-                    .pNext = &bimsi,
-                    .handle = buffer->handle,
-                    .stride = buffer->stride,
-                    .format = buffer->format,
-                    .usage = int(buffer->usage),
-                };
-                VkBindImageMemoryInfo bimi = {
-                    .sType = VK_STRUCTURE_TYPE_BIND_IMAGE_MEMORY_INFO,
-                    .pNext = &nb,
-                    .image = swapchain.images[idx].image,
-                    .memory = VK_NULL_HANDLE,
-                    .memoryOffset = 0,
-                };
-                result = GetData(device).driver.BindImageMemory2(device, 1, &bimi);
-                if (result != VK_SUCCESS) {
-                    // This shouldn't really happen. If it does, something is probably
-                    // unrecoverably wrong with the swapchain and its images. Cancel
-                    // the buffer and declare the swapchain broken.
-                    ALOGE("failed to do deferred gralloc buffer bind");
-                    window->cancelBuffer(window, buffer, fence_fd);
-                    return VK_ERROR_OUT_OF_DATE_KHR;
-                }
-
-                swapchain.images[idx].dequeued = true;
-                swapchain.images[idx].dequeue_fence = fence_fd;
-                swapchain.images[idx].buffer = buffer;
-                break;
-            }
-        }
-    }
-
-    // The buffer doesn't match any slot. This shouldn't normally happen, but is
-    // possible if the bufferqueue is reconfigured behind libvulkan's back. If this
-    // happens, just declare the swapchain to be broken and the app will recreate it.
     if (idx == swapchain.num_images) {
         ALOGE("dequeueBuffer returned unrecognized buffer");
         window->cancelBuffer(window, buffer, fence_fd);
@@ -2048,32 +1881,12 @@
     }
 }
 
-// EXT_swapchain_maintenance1 present mode change
-static bool SetSwapchainPresentMode(ANativeWindow *window, VkPresentModeKHR mode) {
-    // There is no dynamic switching between non-shared present modes.
-    // All we support is switching between demand and continuous refresh.
-    if (!IsSharedPresentMode(mode))
-        return true;
-
-    int err = native_window_set_auto_refresh(window,
-            mode == VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR);
-    if (err != android::OK) {
-        ALOGE("native_window_set_auto_refresh() failed: %s (%d)",
-              strerror(-err), err);
-        return false;
-    }
-
-    return true;
-}
-
 static VkResult PresentOneSwapchain(
         VkQueue queue,
         Swapchain& swapchain,
         uint32_t imageIndex,
         const VkPresentRegionKHR *pRegion,
         const VkPresentTimeGOOGLE *pTime,
-        VkFence presentFence,
-        const VkPresentModeKHR *pPresentMode,
         uint32_t waitSemaphoreCount,
         const VkSemaphore *pWaitSemaphores) {
 
@@ -2104,33 +1917,12 @@
         ANativeWindow* window = swapchain.surface.window.get();
         if (swapchain_result == VK_SUCCESS) {
 
-            if (presentFence != VK_NULL_HANDLE) {
-                int fence_copy = fence < 0 ? -1 : dup(fence);
-                VkImportFenceFdInfoKHR iffi = {
-                    VK_STRUCTURE_TYPE_IMPORT_FENCE_FD_INFO_KHR,
-                    nullptr,
-                    presentFence,
-                    VK_FENCE_IMPORT_TEMPORARY_BIT,
-                    VK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT,
-                    fence_copy,
-                };
-                if (VK_SUCCESS != dispatch.ImportFenceFdKHR(device, &iffi) && fence_copy >= 0) {
-                    // ImportFenceFdKHR takes ownership only if it succeeds
-                    close(fence_copy);
-                }
-            }
-
             if (pRegion) {
                 SetSwapchainSurfaceDamage(window, pRegion);
             }
             if (pTime) {
                 SetSwapchainFrameTimestamp(swapchain, pTime);
             }
-            if (pPresentMode) {
-                if (!SetSwapchainPresentMode(window, *pPresentMode))
-                    swapchain_result = WorstPresentResult(swapchain_result,
-                        VK_ERROR_SURFACE_LOST_KHR);
-            }
 
             err = window->queueBuffer(window, img.buffer.get(), fence);
             // queueBuffer always closes fence, even on error
@@ -2211,9 +2003,6 @@
     // Look at the pNext chain for supported extension structs:
     const VkPresentRegionsKHR* present_regions = nullptr;
     const VkPresentTimesInfoGOOGLE* present_times = nullptr;
-    const VkSwapchainPresentFenceInfoEXT* present_fences = nullptr;
-    const VkSwapchainPresentModeInfoEXT* present_modes = nullptr;
-
     const VkPresentRegionsKHR* next =
         reinterpret_cast<const VkPresentRegionsKHR*>(present_info->pNext);
     while (next) {
@@ -2225,14 +2014,6 @@
                 present_times =
                     reinterpret_cast<const VkPresentTimesInfoGOOGLE*>(next);
                 break;
-            case VK_STRUCTURE_TYPE_SWAPCHAIN_PRESENT_FENCE_INFO_EXT:
-                present_fences =
-                    reinterpret_cast<const VkSwapchainPresentFenceInfoEXT*>(next);
-                break;
-            case VK_STRUCTURE_TYPE_SWAPCHAIN_PRESENT_MODE_INFO_EXT:
-                present_modes =
-                    reinterpret_cast<const VkSwapchainPresentModeInfoEXT*>(next);
-                break;
             default:
                 ALOGV("QueuePresentKHR ignoring unrecognized pNext->sType = %x",
                       next->sType);
@@ -2248,15 +2029,6 @@
                  present_times->swapchainCount != present_info->swapchainCount,
              "VkPresentTimesInfoGOOGLE::swapchainCount != "
              "VkPresentInfo::swapchainCount");
-    ALOGV_IF(present_fences &&
-             present_fences->swapchainCount != present_info->swapchainCount,
-             "VkSwapchainPresentFenceInfoEXT::swapchainCount != "
-             "VkPresentInfo::swapchainCount");
-    ALOGV_IF(present_modes &&
-             present_modes->swapchainCount != present_info->swapchainCount,
-             "VkSwapchainPresentModeInfoEXT::swapchainCount != "
-             "VkPresentInfo::swapchainCount");
-
     const VkPresentRegionKHR* regions =
         (present_regions) ? present_regions->pRegions : nullptr;
     const VkPresentTimeGOOGLE* times =
@@ -2272,8 +2044,6 @@
             present_info->pImageIndices[sc],
             (regions && !swapchain.mailbox_mode) ? &regions[sc] : nullptr,
             times ? &times[sc] : nullptr,
-            present_fences ? present_fences->pFences[sc] : VK_NULL_HANDLE,
-            present_modes ? &present_modes->pPresentModes[sc] : nullptr,
             present_info->waitSemaphoreCount,
             present_info->pWaitSemaphores);
 
@@ -2498,35 +2268,5 @@
         out_bind_infos.empty() ? pBindInfos : out_bind_infos.data());
 }
 
-VKAPI_ATTR
-VkResult ReleaseSwapchainImagesEXT(VkDevice /*device*/,
-                                   const VkReleaseSwapchainImagesInfoEXT* pReleaseInfo) {
-    ATRACE_CALL();
-
-    Swapchain& swapchain = *SwapchainFromHandle(pReleaseInfo->swapchain);
-    ANativeWindow* window = swapchain.surface.window.get();
-
-    // If in shared present mode, don't actually release the image back to the BQ.
-    // Both sides share it forever.
-    if (swapchain.shared)
-        return VK_SUCCESS;
-
-    for (uint32_t i = 0; i < pReleaseInfo->imageIndexCount; i++) {
-        Swapchain::Image& img = swapchain.images[pReleaseInfo->pImageIndices[i]];
-        window->cancelBuffer(window, img.buffer.get(), img.dequeue_fence);
-
-        // cancelBuffer has taken ownership of the dequeue fence
-        img.dequeue_fence = -1;
-        // if we're still holding a release fence, get rid of it now
-        if (img.release_fence >= 0) {
-           close(img.release_fence);
-           img.release_fence = -1;
-        }
-        img.dequeued = false;
-    }
-
-    return VK_SUCCESS;
-}
-
 }  // namespace driver
 }  // namespace vulkan
diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
index 280fe9b..4912ef1 100644
--- a/vulkan/libvulkan/swapchain.h
+++ b/vulkan/libvulkan/swapchain.h
@@ -46,7 +46,6 @@
 VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceFormats2KHR(VkPhysicalDevice physicalDevice, const VkPhysicalDeviceSurfaceInfo2KHR* pSurfaceInfo, uint32_t* pSurfaceFormatCount, VkSurfaceFormat2KHR* pSurfaceFormats);
 VKAPI_ATTR VkResult BindImageMemory2(VkDevice device, uint32_t bindInfoCount, const VkBindImageMemoryInfo* pBindInfos);
 VKAPI_ATTR VkResult BindImageMemory2KHR(VkDevice device, uint32_t bindInfoCount, const VkBindImageMemoryInfo* pBindInfos);
-VKAPI_ATTR VkResult ReleaseSwapchainImagesEXT(VkDevice device, const VkReleaseSwapchainImagesInfoEXT* pReleaseInfo);
 // clang-format on
 
 }  // namespace driver
diff --git a/vulkan/scripts/driver_generator.py b/vulkan/scripts/driver_generator.py
index 78b550c..af56764 100644
--- a/vulkan/scripts/driver_generator.py
+++ b/vulkan/scripts/driver_generator.py
@@ -35,8 +35,6 @@
     'VK_KHR_surface',
     'VK_KHR_surface_protected_capabilities',
     'VK_KHR_swapchain',
-    'VK_EXT_swapchain_maintenance1',
-    'VK_EXT_surface_maintenance1',
 ]
 
 # Extensions known to vulkan::driver level.
@@ -48,7 +46,6 @@
     'VK_KHR_external_memory_capabilities',
     'VK_KHR_external_semaphore_capabilities',
     'VK_KHR_external_fence_capabilities',
-    'VK_KHR_external_fence_fd',
 ]
 
 # Functions needed at vulkan::driver level.
@@ -115,9 +112,6 @@
     # For promoted VK_KHR_external_fence_capabilities
     'vkGetPhysicalDeviceExternalFenceProperties',
     'vkGetPhysicalDeviceExternalFencePropertiesKHR',
-
-    # VK_KHR_swapchain_maintenance1 requirement
-    'vkImportFenceFdKHR',
 ]
 
 # Functions intercepted at vulkan::driver level.