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Vulkan requires us waiting on the image acquired from vkAcquireNextImageKHR() before we start rendering to it, as that function is allowed to return images that are still in use by the compositor. Because of that requirement, vkAcquireNextImageKHR() requires a semaphore or fence to be passed that it can signal once it's done. We now use a side channel to begin_frame() - calling set_draw_semaphore() - to pass that semaphore so that the vkAcquireNextImageKHR() call inside begin_frame() can use it, and then we can wait on it later when we submit. And yes, this is insanely convoluted, the Vulkan developers should totally have thought about GTK's internal designs before coming up with that idea.
124 lines
5.0 KiB
C
124 lines
5.0 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkvulkancontextprivate.h: specific Vulkan wrappers
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*
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* Copyright © 2016 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "gdkvulkancontext.h"
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#include "gdkdebugprivate.h"
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#include "gdkdmabufprivate.h"
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#include "gdkdmabufdownloaderprivate.h"
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#include "gdkdrawcontextprivate.h"
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#include "gdkenums.h"
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#ifdef GDK_RENDERING_VULKAN
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#include <vulkan/vulkan.h>
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#endif
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G_BEGIN_DECLS
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#define GDK_VULKAN_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_VULKAN_CONTEXT, GdkVulkanContextClass))
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#define GDK_IS_VULKAN_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_VULKAN_CONTEXT))
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#define GDK_VULKAN_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_VULKAN_CONTEXT, GdkVulkanContextClass))
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typedef struct _GdkVulkanContextClass GdkVulkanContextClass;
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struct _GdkVulkanContext
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{
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GdkDrawContext parent_instance;
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};
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struct _GdkVulkanContextClass
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{
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GdkDrawContextClass parent_class;
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#ifdef GDK_RENDERING_VULKAN
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VkResult (* create_surface) (GdkVulkanContext *context,
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VkSurfaceKHR *surface);
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#endif
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};
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#ifdef GDK_RENDERING_VULKAN
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const char * gdk_vulkan_strerror (VkResult result);
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static inline VkResult
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gdk_vulkan_handle_result (VkResult res,
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const char *called_function)
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{
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if (res != VK_SUCCESS)
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{
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GDK_DEBUG (VULKAN, "%s(): %s (%d)", called_function, gdk_vulkan_strerror (res), res);
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}
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return res;
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}
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#define GDK_VK_CHECK(func, ...) gdk_vulkan_handle_result (func (__VA_ARGS__), G_STRINGIFY (func))
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gboolean gdk_display_init_vulkan (GdkDisplay *display,
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GError **error);
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void gdk_display_ref_vulkan (GdkDisplay *display);
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void gdk_display_unref_vulkan (GdkDisplay *display);
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#ifdef HAVE_DMABUF
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GdkDmabufDownloader * gdk_vulkan_get_dmabuf_downloader (GdkDisplay *display,
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GdkDmabufFormatsBuilder *builder);
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#endif
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VkShaderModule gdk_display_get_vk_shader_module (GdkDisplay *display,
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const char *resource_name);
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void gdk_display_vulkan_pipeline_cache_updated (GdkDisplay *display);
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VkInstance gdk_vulkan_context_get_instance (GdkVulkanContext *context);
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VkPhysicalDevice gdk_vulkan_context_get_physical_device (GdkVulkanContext *context);
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VkDevice gdk_vulkan_context_get_device (GdkVulkanContext *context);
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VkQueue gdk_vulkan_context_get_queue (GdkVulkanContext *context);
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uint32_t gdk_vulkan_context_get_queue_family_index (GdkVulkanContext *context);
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VkFormat gdk_vulkan_context_get_image_format (GdkVulkanContext *context);
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GdkMemoryFormat gdk_vulkan_context_get_memory_format (GdkVulkanContext *context);
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uint32_t gdk_vulkan_context_get_n_images (GdkVulkanContext *context);
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VkImage gdk_vulkan_context_get_image (GdkVulkanContext *context,
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guint id);
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uint32_t gdk_vulkan_context_get_draw_index (GdkVulkanContext *context);
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void gdk_vulkan_context_set_draw_semaphore (GdkVulkanContext *context,
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VkSemaphore semaphore);
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#else /* !GDK_RENDERING_VULKAN */
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static inline gboolean
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gdk_display_ref_vulkan (GdkDisplay *display,
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GError **error)
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{
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GDK_DISPLAY_DEBUG (display, VULKAN, "Support for Vulkan disabled at compile-time");
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g_set_error_literal (error, GDK_VULKAN_ERROR, GDK_VULKAN_ERROR_UNSUPPORTED,
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"Vulkan support was not enabled at compile time.");
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return FALSE;
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}
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#endif /* !GDK_RENDERING_VULKAN */
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G_END_DECLS
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