/* GDK - The GIMP Drawing Kit * * gdkvulkancontext.c: Vulkan wrappers * * Copyright © 2016 Benjamin Otte * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library. If not, see . */ #include "config.h" #include "gdkvulkancontext.h" #include "gdkvulkancontextprivate.h" #include "gdkdisplayprivate.h" #include "gdkinternals.h" #include "gdkintl.h" /** * SECTION:gdkvulkancontext * @Title: GdkVulkanContext * @Short_description: Vulkan draw context * * #GdkVulkanContext is an object representing the platform-specific * Vulkan draw context. * * #GdkVulkanContexts are created for a #GdkSurface using * gdk_surface_create_vulkan_context(), and the context will match the * the characteristics of the surface. * * Support for #GdkVulkanContext is platform-specific, context creation * can fail, returning %NULL context. */ /** * GdkVulkanContext: * * The GdkVulkanContext struct contains only private fields and should not * be accessed directly. */ typedef struct _GdkVulkanContextPrivate GdkVulkanContextPrivate; struct _GdkVulkanContextPrivate { #ifdef GDK_RENDERING_VULKAN VkSurfaceKHR surface; VkSurfaceFormatKHR image_format; VkSwapchainKHR swapchain; VkSemaphore draw_semaphore; guint n_images; VkImage *images; cairo_region_t **regions; #endif guint32 draw_index; guint vulkan_ref: 1; }; enum { IMAGES_UPDATED, LAST_SIGNAL }; G_DEFINE_QUARK (gdk-vulkan-error-quark, gdk_vulkan_error) static guint signals[LAST_SIGNAL] = { 0 }; static void gdk_vulkan_context_initable_init (GInitableIface *iface); G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GdkVulkanContext, gdk_vulkan_context, GDK_TYPE_DRAW_CONTEXT, G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, gdk_vulkan_context_initable_init) G_ADD_PRIVATE (GdkVulkanContext)) #ifdef GDK_RENDERING_VULKAN const char * gdk_vulkan_strerror (VkResult result) { /* If your compiler brought you here with a warning about missing * enumeration values, you're running a newer Vulkan version than * the GTK developers )or you are a GTK developer) and have * encountered a newly added Vulkan error message. * You want to add it to this enum now. * * Becuse the Vulkan people don't make adding this too easy, here's * the process to manage it: * 1. go to * https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blame/master/include/vulkan/vulkan.h * 2. Find the line where this enum value was added. * 3. Click the commit that added this line. * 4. The commit you're looking at now should also change * VK_HEADER_VERSION, find that number. * 5. Use that number in the #ifdef when adding the enum value to * this enum. * 6. For the error message, look at the specification (the one * that includes all extensions) at * https://www.khronos.org/registry/vulkan/specs/1.0-extensions/html/vkspec.html#VkResult * 7. If this value has not been added to the specification yet, * search for the error message in the text of specification. * Often it will have a description that can be used as an error * message. * 8. If that didn't lead to one (or you are lazy), just use the * literal string of the enum value as the error message. A * GTK developer will add the correct one once it's added to the * specification. */ switch (result) { case VK_SUCCESS: return "Command successfully completed."; case VK_NOT_READY: return "A fence or query has not yet completed."; case VK_TIMEOUT: return "A wait operation has not completed in the specified time."; case VK_EVENT_SET: return "An event is signaled."; case VK_EVENT_RESET: return "An event is unsignaled."; case VK_INCOMPLETE: return "A return array was too small for the result."; case VK_SUBOPTIMAL_KHR: return "A swapchain no longer matches the surface properties exactly, but can still be used to present to the surface successfully."; case VK_ERROR_OUT_OF_HOST_MEMORY: return "A host memory allocation has failed."; case VK_ERROR_OUT_OF_DEVICE_MEMORY: return "A device memory allocation has failed."; case VK_ERROR_INITIALIZATION_FAILED: return "Initialization of an object could not be completed for implementation-specific reasons."; case VK_ERROR_DEVICE_LOST: return "The logical or physical device has been lost."; case VK_ERROR_MEMORY_MAP_FAILED: return "Mapping of a memory object has failed."; case VK_ERROR_LAYER_NOT_PRESENT: return "A requested layer is not present or could not be loaded."; case VK_ERROR_EXTENSION_NOT_PRESENT: return "A requested extension is not supported."; case VK_ERROR_FEATURE_NOT_PRESENT: return "A requested feature is not supported."; case VK_ERROR_INCOMPATIBLE_DRIVER: return "The requested version of Vulkan is not supported by the driver or is otherwise incompatible for implementation-specific reasons."; case VK_ERROR_TOO_MANY_OBJECTS: return "Too many objects of the type have already been created."; case VK_ERROR_FORMAT_NOT_SUPPORTED: return "A requested format is not supported on this device."; #if VK_HEADER_VERSION >= 24 case VK_ERROR_FRAGMENTED_POOL: return "A requested pool allocation has failed due to fragmentation of the pool’s memory."; #endif case VK_ERROR_SURFACE_LOST_KHR: return "A surface is no longer available."; case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR: return "The requested window is already in use by Vulkan or another API in a manner which prevents it from being used again."; case VK_ERROR_OUT_OF_DATE_KHR: return "A surface has changed in such a way that it is no longer compatible with the swapchain."; case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR: return "The display used by a swapchain does not use the same presentable image layout, or is incompatible in a way that prevents sharing an image."; case VK_ERROR_VALIDATION_FAILED_EXT: return "The application caused the validation layer to fail."; case VK_ERROR_INVALID_SHADER_NV: return "One or more shaders failed to compile or link."; #if VK_HEADER_VERSION >= 39 case VK_ERROR_OUT_OF_POOL_MEMORY_KHR: return "A pool memory allocation has failed."; #endif #if VK_HEADER_VERSION >= 54 case VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR: return "An external handle is not a valid handle of the specified type."; #endif #if VK_HEADER_VERSION >= 64 case VK_ERROR_NOT_PERMITTED_EXT: return "The caller does not have sufficient privileges."; #endif #if VK_HEADER_VERSION >= 72 case VK_ERROR_FRAGMENTATION_EXT: return "A descriptor pool creation has failed due to fragmentation"; #endif case VK_RESULT_RANGE_SIZE: case VK_RESULT_MAX_ENUM: default: return "Unknown Vulkan error."; } } static void gdk_vulkan_context_dispose (GObject *gobject) { GdkVulkanContext *context = GDK_VULKAN_CONTEXT (gobject); GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); GdkDisplay *display; VkDevice device; guint i; for (i = 0; i < priv->n_images; i++) { cairo_region_destroy (priv->regions[i]); } g_clear_pointer (&priv->regions, g_free); g_clear_pointer (&priv->images, g_free); priv->n_images = 0; device = gdk_vulkan_context_get_device (context); if (priv->draw_semaphore != VK_NULL_HANDLE) { vkDestroySemaphore (device, priv->draw_semaphore, NULL); priv->draw_semaphore = VK_NULL_HANDLE; } if (priv->swapchain != VK_NULL_HANDLE) { vkDestroySwapchainKHR (device, priv->swapchain, NULL); priv->swapchain = VK_NULL_HANDLE; } if (priv->surface != VK_NULL_HANDLE) { vkDestroySurfaceKHR (gdk_vulkan_context_get_instance (context), priv->surface, NULL); priv->surface = VK_NULL_HANDLE; } /* display will be unset in gdk_draw_context_dispose() */ display = gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context)); if (display && priv->vulkan_ref) gdk_display_unref_vulkan (display); G_OBJECT_CLASS (gdk_vulkan_context_parent_class)->dispose (gobject); } static gboolean gdk_vulkan_context_check_swapchain (GdkVulkanContext *context, GError **error) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); GdkSurface *surface = gdk_draw_context_get_surface (GDK_DRAW_CONTEXT (context)); VkSurfaceCapabilitiesKHR capabilities; VkCompositeAlphaFlagBitsKHR composite_alpha; VkSwapchainKHR new_swapchain; VkResult res; VkDevice device; guint i; device = gdk_vulkan_context_get_device (context); res = GDK_VK_CHECK (vkGetPhysicalDeviceSurfaceCapabilitiesKHR, gdk_vulkan_context_get_physical_device (context), priv->surface, &capabilities); if (res != VK_SUCCESS) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "Could not query surface capabilities: %s", gdk_vulkan_strerror (res)); return FALSE; } if (capabilities.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR) composite_alpha = VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR; else if (capabilities.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR) { /* let's hope the backend knows what it's doing */ composite_alpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR; } else { GDK_DISPLAY_NOTE (gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context)), VULKAN, g_warning ("Vulkan swapchain doesn't do transparency. Using opaque swapchain instead.")); composite_alpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; } /* * Per https://www.khronos.org/registry/vulkan/specs/1.0-wsi_extensions/xhtml/vkspec.html#VkSurfaceCapabilitiesKHR * the current extent may assume a special value, meaning that the extend should assume whatever * value the surface has. */ if (capabilities.currentExtent.width == -1 || capabilities.currentExtent.height == -1) { capabilities.currentExtent.width = gdk_surface_get_width (surface) * gdk_surface_get_scale_factor (surface); capabilities.currentExtent.height = gdk_surface_get_height (surface) * gdk_surface_get_scale_factor (surface); } res = GDK_VK_CHECK (vkCreateSwapchainKHR, device, &(VkSwapchainCreateInfoKHR) { .sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR, .pNext = NULL, .flags = 0, .surface = priv->surface, .minImageCount = CLAMP (4, capabilities.minImageCount, capabilities.maxImageCount ? capabilities.maxImageCount : G_MAXUINT32), .imageFormat = priv->image_format.format, .imageColorSpace = priv->image_format.colorSpace, .imageExtent = capabilities.currentExtent, .imageArrayLayers = 1, .imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, .imageSharingMode = VK_SHARING_MODE_EXCLUSIVE, .queueFamilyIndexCount = 1, .pQueueFamilyIndices = (uint32_t[1]) { gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_queue_family_index }, .preTransform = capabilities.currentTransform, .compositeAlpha = composite_alpha, .presentMode = VK_PRESENT_MODE_FIFO_KHR, .clipped = VK_FALSE, .oldSwapchain = priv->swapchain }, NULL, &new_swapchain); if (priv->swapchain != VK_NULL_HANDLE) { vkDestroySwapchainKHR (device, priv->swapchain, NULL); for (i = 0; i < priv->n_images; i++) { cairo_region_destroy (priv->regions[i]); } g_clear_pointer (&priv->regions, g_free); g_clear_pointer (&priv->images, g_free); priv->n_images = 0; } if (res == VK_SUCCESS) { priv->swapchain = new_swapchain; GDK_VK_CHECK (vkGetSwapchainImagesKHR, device, priv->swapchain, &priv->n_images, NULL); priv->images = g_new (VkImage, priv->n_images); GDK_VK_CHECK (vkGetSwapchainImagesKHR, device, priv->swapchain, &priv->n_images, priv->images); priv->regions = g_new (cairo_region_t *, priv->n_images); for (i = 0; i < priv->n_images; i++) { priv->regions[i] = cairo_region_create_rectangle (&(cairo_rectangle_int_t) { 0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface), }); } } else { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "Could not create swapchain for this surface: %s", gdk_vulkan_strerror (res)); priv->swapchain = VK_NULL_HANDLE; return FALSE; } g_signal_emit (context, signals[IMAGES_UPDATED], 0); return res == VK_SUCCESS; } static void gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context, cairo_region_t *region) { GdkVulkanContext *context = GDK_VULKAN_CONTEXT (draw_context); GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); guint i; for (i = 0; i < priv->n_images; i++) { cairo_region_union (priv->regions[i], region); } GDK_VK_CHECK (vkAcquireNextImageKHR, gdk_vulkan_context_get_device (context), priv->swapchain, UINT64_MAX, priv->draw_semaphore, VK_NULL_HANDLE, &priv->draw_index); cairo_region_union (region, priv->regions[priv->draw_index]); } static void gdk_vulkan_context_end_frame (GdkDrawContext *draw_context, cairo_region_t *painted) { GdkVulkanContext *context = GDK_VULKAN_CONTEXT (draw_context); GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); GDK_VK_CHECK (vkQueuePresentKHR, gdk_vulkan_context_get_queue (context), &(VkPresentInfoKHR) { .sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR, .waitSemaphoreCount = 1, .pWaitSemaphores = (VkSemaphore[]) { priv->draw_semaphore }, .swapchainCount = 1, .pSwapchains = (VkSwapchainKHR[]) { priv->swapchain }, .pImageIndices = (uint32_t[]) { priv->draw_index }, }); cairo_region_destroy (priv->regions[priv->draw_index]); priv->regions[priv->draw_index] = cairo_region_create (); } static void gdk_vulkan_context_surface_resized (GdkDrawContext *draw_context) { GdkVulkanContext *context = GDK_VULKAN_CONTEXT (draw_context); GError *error = NULL; if (!gdk_vulkan_context_check_swapchain (context, &error)) { g_warning ("%s", error->message); g_error_free (error); return; } } static void gdk_vulkan_context_class_init (GdkVulkanContextClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS (klass); gobject_class->dispose = gdk_vulkan_context_dispose; draw_context_class->begin_frame = gdk_vulkan_context_begin_frame; draw_context_class->end_frame = gdk_vulkan_context_end_frame; draw_context_class->surface_resized = gdk_vulkan_context_surface_resized; /** * GdkVulkanContext::images-updated: * @context: the object on which the signal is emitted * * This signal is emitted when the images managed by this context have * changed. Usually this means that the swapchain had to be recreated, * for example in response to a change of the surface size. */ signals[IMAGES_UPDATED] = g_signal_new (g_intern_static_string ("images-updated"), G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); } static void gdk_vulkan_context_init (GdkVulkanContext *self) { } static gboolean gdk_vulkan_context_real_init (GInitable *initable, GCancellable *cancellable, GError **error) { GdkVulkanContext *context = GDK_VULKAN_CONTEXT (initable); GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); VkResult res; VkBool32 supported; uint32_t i; priv->vulkan_ref = gdk_display_ref_vulkan (gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context)), error); if (!priv->vulkan_ref) return FALSE; res = GDK_VULKAN_CONTEXT_GET_CLASS (context)->create_surface (context, &priv->surface); if (res != VK_SUCCESS) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "Could not create surface for this surface: %s", gdk_vulkan_strerror (res)); return FALSE; } res = GDK_VK_CHECK (vkGetPhysicalDeviceSurfaceSupportKHR, gdk_vulkan_context_get_physical_device (context), gdk_vulkan_context_get_queue_family_index (context), priv->surface, &supported); if (res != VK_SUCCESS) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "Could not check if queue family supports this surface: %s", gdk_vulkan_strerror (res)); } else if (!supported) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "FIXME: Queue family does not support surface. Write code to try different queue family."); } else { uint32_t n_formats; GDK_VK_CHECK (vkGetPhysicalDeviceSurfaceFormatsKHR, gdk_vulkan_context_get_physical_device (context), priv->surface, &n_formats, NULL); VkSurfaceFormatKHR *formats = g_newa (VkSurfaceFormatKHR, n_formats); GDK_VK_CHECK (vkGetPhysicalDeviceSurfaceFormatsKHR, gdk_vulkan_context_get_physical_device (context), priv->surface, &n_formats, formats); for (i = 0; i < n_formats; i++) { if (formats[i].format == VK_FORMAT_B8G8R8A8_UNORM) break; } if (i == n_formats) { g_set_error_literal (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "No supported image format found."); goto out_surface; } priv->image_format = formats[i]; if (!gdk_vulkan_context_check_swapchain (context, error)) goto out_surface; GDK_VK_CHECK (vkCreateSemaphore, gdk_vulkan_context_get_device (context), &(VkSemaphoreCreateInfo) { .sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO, }, NULL, &priv->draw_semaphore); return TRUE; } out_surface: vkDestroySurfaceKHR (gdk_vulkan_context_get_instance (context), priv->surface, NULL); priv->surface = VK_NULL_HANDLE; return FALSE; } static void gdk_vulkan_context_initable_init (GInitableIface *iface) { iface->init = gdk_vulkan_context_real_init; } /** * gdk_vulkan_context_get_instance: * @context: a #GdkVulkanContext * * Gets the Vulkan instance that is associated with @context. * * Returns: (transfer none): the VkInstance */ VkInstance gdk_vulkan_context_get_instance (GdkVulkanContext *context) { g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), NULL); return gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_instance; } /** * gdk_vulkan_context_get_physical_device: * @context: a #GdkVulkanContext * * Gets the Vulkan physical device that this context is using. * * Returns: (transfer none): the VkPhysicalDevice */ VkPhysicalDevice gdk_vulkan_context_get_physical_device (GdkVulkanContext *context) { g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), NULL); return gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_physical_device; } /** * gdk_vulkan_context_get_device: * @context: a #GdkVulkanContext * * Gets the Vulkan device that this context is using. * * Returns: (transfer none): the VkDevice */ VkDevice gdk_vulkan_context_get_device (GdkVulkanContext *context) { g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), NULL); return gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_device; } /** * gdk_vulkan_context_get_queue: * @context: a #GdkVulkanContext * * Gets the Vulkan queue that this context is using. * * Returns: (transfer none): the VkQueue */ VkQueue gdk_vulkan_context_get_queue (GdkVulkanContext *context) { g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), NULL); return gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_queue; } /** * gdk_vulkan_context_get_queue_family_index: * @context: a #GdkVulkanContext * * Gets the family index for the queue that this context is using. * See vkGetPhysicalDeviceQueueFamilyProperties(). * * Returns: the index */ uint32_t gdk_vulkan_context_get_queue_family_index (GdkVulkanContext *context) { g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), 0); return gdk_draw_context_get_display (GDK_DRAW_CONTEXT (context))->vk_queue_family_index; } /** * gdk_vulkan_context_get_image_format: * @context: a #GdkVulkanContext * * Gets the image format that this context is using. * * Returns: (transfer none): the VkFormat */ VkFormat gdk_vulkan_context_get_image_format (GdkVulkanContext *context) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), VK_FORMAT_UNDEFINED); return priv->image_format.format; } /** * gdk_vulkan_context_get_n_images: * @context: a #GdkVulkanContext * * Gets the number of images that this context is using in its swap chain. * * Returns: the number of images */ uint32_t gdk_vulkan_context_get_n_images (GdkVulkanContext *context) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), 0); return priv->n_images; } /** * gdk_vulkan_context_get_image: * @context: a #GdkVulkanContext * @id: the index of the image to return * * Gets the image with index @id that this context is using. * * Returns: (transfer none): the VkImage */ VkImage gdk_vulkan_context_get_image (GdkVulkanContext *context, guint id) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), VK_NULL_HANDLE); g_return_val_if_fail (id < priv->n_images, VK_NULL_HANDLE); return priv->images[id]; } /** * gdk_vulkan_context_get_draw_index: * @context: a #GdkVulkanContext * * Gets the index of the image that is currently being drawn. * * This function can only be used between gdk_cairo_context_begin_frame() and * gdk_draw_context_end_frame() calls. * * Returns: the index of the images that is being drawn */ uint32_t gdk_vulkan_context_get_draw_index (GdkVulkanContext *context) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), 0); g_return_val_if_fail (gdk_draw_context_is_in_frame (GDK_DRAW_CONTEXT (context)), 0); return priv->draw_index; } /** * gdk_vulkan_context_get_draw_semaphore: * @context: a #GdkVulkanContext * * Gets the Vulkan semaphore that protects access to the image that is * currently being drawn. * * This function can only be used between gdk_cairo_context_begin_frame() and * gdk_draw_context_end_frame() calls. * * Returns: (transfer none): the VkSemaphore */ VkSemaphore gdk_vulkan_context_get_draw_semaphore (GdkVulkanContext *context) { GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context); g_return_val_if_fail (GDK_IS_VULKAN_CONTEXT (context), VK_NULL_HANDLE); g_return_val_if_fail (gdk_draw_context_is_in_frame (GDK_DRAW_CONTEXT (context)), VK_NULL_HANDLE); return priv->draw_semaphore; } static gboolean gdk_display_create_vulkan_device (GdkDisplay *display, GError **error) { uint32_t i, j, k; const char *override; gboolean list_devices; int first, last; uint32_t n_devices = 0; GDK_VK_CHECK(vkEnumeratePhysicalDevices, display->vk_instance, &n_devices, NULL); VkPhysicalDevice *devices; if (n_devices == 0) { /* Give a different error for 0 devices so people know their drivers suck. */ g_set_error_literal (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "No Vulkan devices available."); return FALSE; } devices = g_newa (VkPhysicalDevice, n_devices); GDK_VK_CHECK(vkEnumeratePhysicalDevices, display->vk_instance, &n_devices, devices); first = 0; last = n_devices; override = g_getenv ("GDK_VULKAN_DEVICE"); list_devices = FALSE; if (override) { if (g_strcmp0 (override, "list") == 0) list_devices = TRUE; else { gint64 device_idx; GError *error = NULL; if (!g_ascii_string_to_signed (override, 10, 0, G_MAXINT, &device_idx, &error)) { g_warning ("Failed to parse %s: %s", "GDK_VULKAN_DEVICE", error->message); g_error_free (error); device_idx = -1; } if (device_idx < 0 || device_idx >= n_devices) g_warning ("%s value out of range, ignoring", "GDK_VULKAN_DEVICE"); else { first = device_idx; last = first + 1; } } } if (list_devices || GDK_DISPLAY_DEBUG_CHECK (display, VULKAN)) { for (i = 0; i < n_devices; i++) { VkPhysicalDeviceProperties props; VkQueueFamilyProperties *queue_props; uint32_t n_queue_props; const char *device_type[] = { "Other", "Integrated GPU", "Discrete GPU", "Virtual GPU", "CPU" }; struct { int bit; const char *name; } queue_caps[] = { { VK_QUEUE_GRAPHICS_BIT, "graphics" }, { VK_QUEUE_COMPUTE_BIT, "compute" }, { VK_QUEUE_TRANSFER_BIT, "transfer" }, { VK_QUEUE_SPARSE_BINDING_BIT, "sparse binding" } }; vkGetPhysicalDeviceProperties (devices[i], &props); vkGetPhysicalDeviceQueueFamilyProperties (devices[i], &n_queue_props, NULL); queue_props = g_newa (VkQueueFamilyProperties, n_queue_props); vkGetPhysicalDeviceQueueFamilyProperties (devices[i], &n_queue_props, queue_props); g_print ("Vulkan Device %u:\n", i); g_print (" %s (%s)\n", props.deviceName, device_type[props.deviceType]); g_print (" Vendor ID: 0x%Xu\n", props.vendorID); g_print (" Device ID: 0x%Xu\n", props.deviceID); g_print (" API version %u.%u.%u\n", VK_VERSION_MAJOR (props.apiVersion), VK_VERSION_MINOR (props.apiVersion), VK_VERSION_PATCH (props.apiVersion)); for (j = 0; j < n_queue_props; j++) { const char *sep = ""; g_print (" Queue %d: ", j); for (k = 0; k < G_N_ELEMENTS (queue_caps); k++) { if (queue_props[j].queueFlags & queue_caps[k].bit) { g_print ("%s%s", sep, queue_caps[k].name); sep = "/"; } } g_print ("\n"); } } } for (i = first; i < last; i++) { uint32_t n_queue_props; vkGetPhysicalDeviceQueueFamilyProperties (devices[i], &n_queue_props, NULL); VkQueueFamilyProperties *queue_props = g_newa (VkQueueFamilyProperties, n_queue_props); vkGetPhysicalDeviceQueueFamilyProperties (devices[i], &n_queue_props, queue_props); for (j = 0; j < n_queue_props; j++) { if (queue_props[j].queueFlags & VK_QUEUE_GRAPHICS_BIT) { GDK_DISPLAY_NOTE (display, VULKAN, g_print ("Using Vulkan device %u, queue %u\n", i, j)); if (GDK_VK_CHECK (vkCreateDevice, devices[i], &(VkDeviceCreateInfo) { VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO, NULL, 0, 1, &(VkDeviceQueueCreateInfo) { .sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, .queueFamilyIndex = j, .queueCount = 1, .pQueuePriorities = (float []) { 1.0f }, }, 0, NULL, 1, (const char * const []) { VK_KHR_SWAPCHAIN_EXTENSION_NAME, }, }, NULL, &display->vk_device) != VK_SUCCESS) continue; display->vk_physical_device = devices[i]; vkGetDeviceQueue(display->vk_device, j, 0, &display->vk_queue); display->vk_queue_family_index = j; return TRUE; } } } g_set_error_literal (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_NOT_AVAILABLE, "Could not find a Vulkan device with the required features."); return FALSE; } static VkBool32 VKAPI_CALL gdk_vulkan_debug_report (VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData) { if (flags & VK_DEBUG_REPORT_ERROR_BIT_EXT) g_critical ("Vulkan: %s: %s", pLayerPrefix, pMessage); else if (flags & VK_DEBUG_REPORT_WARNING_BIT_EXT) g_critical ("Vulkan: %s: %s", pLayerPrefix, pMessage); else if (flags & VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT) g_warning ("Vulkan: %s: %s", pLayerPrefix, pMessage); else if (flags & VK_DEBUG_REPORT_DEBUG_BIT_EXT) g_debug ("Vulkan: %s: %s", pLayerPrefix, pMessage); else g_info ("Vulkan: %s: %s", pLayerPrefix, pMessage); return VK_FALSE; } static gboolean gdk_display_create_vulkan_instance (GdkDisplay *display, GError **error) { uint32_t i; GPtrArray *used_extensions; GPtrArray *used_layers; gboolean validate = FALSE, have_debug_report = FALSE; VkResult res; if (GDK_DISPLAY_GET_CLASS (display)->vk_extension_name == NULL) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_UNSUPPORTED, "The %s backend has no Vulkan support.", G_OBJECT_TYPE_NAME (display)); return FALSE; } uint32_t n_extensions; GDK_VK_CHECK (vkEnumerateInstanceExtensionProperties, NULL, &n_extensions, NULL); VkExtensionProperties *extensions = g_newa (VkExtensionProperties, n_extensions); GDK_VK_CHECK (vkEnumerateInstanceExtensionProperties, NULL, &n_extensions, extensions); used_extensions = g_ptr_array_new (); g_ptr_array_add (used_extensions, (gpointer) VK_KHR_SURFACE_EXTENSION_NAME); g_ptr_array_add (used_extensions, (gpointer) GDK_DISPLAY_GET_CLASS (display)->vk_extension_name); for (i = 0; i < n_extensions; i++) { if (GDK_DISPLAY_DEBUG_CHECK (display, VULKAN)) g_print ("Extension available: %s v%u.%u.%u\n", extensions[i].extensionName, VK_VERSION_MAJOR (extensions[i].specVersion), VK_VERSION_MINOR (extensions[i].specVersion), VK_VERSION_PATCH (extensions[i].specVersion)); if (g_str_equal (extensions[i].extensionName, VK_EXT_DEBUG_REPORT_EXTENSION_NAME)) { g_ptr_array_add (used_extensions, (gpointer) VK_EXT_DEBUG_REPORT_EXTENSION_NAME); have_debug_report = TRUE; } } uint32_t n_layers; GDK_VK_CHECK (vkEnumerateInstanceLayerProperties, &n_layers, NULL); VkLayerProperties *layers = g_newa (VkLayerProperties, n_layers); GDK_VK_CHECK (vkEnumerateInstanceLayerProperties, &n_layers, layers); used_layers = g_ptr_array_new (); for (i = 0; i < n_layers; i++) { if (GDK_DISPLAY_DEBUG_CHECK (display, VULKAN)) g_print ("Layer available: %s v%u.%u.%u (%s)\n", layers[i].layerName, VK_VERSION_MAJOR (layers[i].specVersion), VK_VERSION_MINOR (layers[i].specVersion), VK_VERSION_PATCH (layers[i].specVersion), layers[i].description); if (GDK_DISPLAY_DEBUG_CHECK (display, VULKAN_VALIDATE) && g_str_equal (layers[i].layerName, "VK_LAYER_LUNARG_standard_validation")) { g_ptr_array_add (used_layers, (gpointer) "VK_LAYER_LUNARG_standard_validation"); validate = TRUE; } } if (GDK_DISPLAY_DEBUG_CHECK (display, VULKAN_VALIDATE) && !validate) { g_warning ("Vulkan validation layers were requested, but not found. Running without."); } res = GDK_VK_CHECK (vkCreateInstance, &(VkInstanceCreateInfo) { .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO, .pNext = NULL, .flags = 0, .pApplicationInfo = &(VkApplicationInfo) { .sType = VK_STRUCTURE_TYPE_APPLICATION_INFO, .pNext = NULL, .pApplicationName = g_get_application_name (), .applicationVersion = 0, .pEngineName = "GTK+", .engineVersion = VK_MAKE_VERSION (GDK_MAJOR_VERSION, GDK_MINOR_VERSION, GDK_MICRO_VERSION), .apiVersion = VK_API_VERSION_1_0 }, .enabledLayerCount = used_layers->len, .ppEnabledLayerNames = (const char * const *) used_layers->pdata, .enabledExtensionCount = used_extensions->len, .ppEnabledExtensionNames = (const char * const *) used_extensions->pdata }, NULL, &display->vk_instance); g_ptr_array_free (used_layers, TRUE); g_ptr_array_free (used_extensions, TRUE); if (res != VK_SUCCESS) { g_set_error (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_UNSUPPORTED, "Could not create a Vulkan instance: %s", gdk_vulkan_strerror (res)); return FALSE; } if (have_debug_report) { PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallbackEXT; vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT) vkGetInstanceProcAddr (display->vk_instance, "vkCreateDebugReportCallbackEXT" ); GDK_VK_CHECK (vkCreateDebugReportCallbackEXT, display->vk_instance, &(VkDebugReportCallbackCreateInfoEXT) { .sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT, .pNext = NULL, .flags = VK_DEBUG_REPORT_INFORMATION_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT | VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_DEBUG_BIT_EXT, .pfnCallback = gdk_vulkan_debug_report, .pUserData = NULL }, NULL, &display->vk_debug_callback); } if (!gdk_display_create_vulkan_device (display, error)) { if (display->vk_debug_callback != VK_NULL_HANDLE) { PFN_vkDestroyDebugReportCallbackEXT vkDestroyDebugReportCallbackEXT; vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT) vkGetInstanceProcAddr (display->vk_instance, "vkDestroyDebugReportCallbackEXT"); vkDestroyDebugReportCallbackEXT (display->vk_instance, display->vk_debug_callback, NULL); display->vk_debug_callback = VK_NULL_HANDLE; } vkDestroyInstance (display->vk_instance, NULL); display->vk_instance = VK_NULL_HANDLE; return FALSE; } return TRUE; } gboolean gdk_display_ref_vulkan (GdkDisplay *display, GError **error) { if (display->vulkan_refcount == 0) { if (!gdk_display_create_vulkan_instance (display, error)) return FALSE; } display->vulkan_refcount++; return TRUE; } void gdk_display_unref_vulkan (GdkDisplay *display) { g_return_if_fail (GDK_IS_DISPLAY (display)); g_return_if_fail (display->vulkan_refcount > 0); display->vulkan_refcount--; if (display->vulkan_refcount > 0) return; vkDestroyDevice (display->vk_device, NULL); display->vk_device = VK_NULL_HANDLE; if (display->vk_debug_callback != VK_NULL_HANDLE) { PFN_vkDestroyDebugReportCallbackEXT vkDestroyDebugReportCallbackEXT; vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT) vkGetInstanceProcAddr (display->vk_instance, "vkDestroyDebugReportCallbackEXT"); vkDestroyDebugReportCallbackEXT (display->vk_instance, display->vk_debug_callback, NULL); display->vk_debug_callback = VK_NULL_HANDLE; } vkDestroyInstance (display->vk_instance, NULL); display->vk_instance = VK_NULL_HANDLE; } #else /* GDK_RENDERING_VULKAN */ static void gdk_vulkan_context_class_init (GdkVulkanContextClass *klass) { signals[IMAGES_UPDATED] = g_signal_new (g_intern_static_string ("images-updated"), G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); } static void gdk_vulkan_context_init (GdkVulkanContext *self) { } static void gdk_vulkan_context_initable_init (GInitableIface *iface) { } #endif /* GDK_RENDERING_VULKAN */