vulkan-wsi-layer/layer/surface_api.cpp

/*
 * Copyright (c) 2016-2017, 2019, 2021 Arm Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <cassert>
#include <wsi/wsi_factory.hpp>
#include "private_data.hpp"
#include "surface_api.hpp"

extern "C" {

/**
 * @brief Implements vkGetPhysicalDeviceSurfaceCapabilitiesKHR Vulkan entrypoint.
 */
VKAPI_ATTR VkResult wsi_layer_vkGetPhysicalDeviceSurfaceCapabilitiesKHR(VkPhysicalDevice physicalDevice,
                                                                        VkSurfaceKHR surface,
                                                                        VkSurfaceCapabilitiesKHR *pSurfaceCapabilities)
{
   auto &instance = layer::instance_private_data::get(physicalDevice);
   if (instance.should_layer_handle_surface(physicalDevice, surface))
   {
      wsi::surface_properties *props = wsi::get_surface_properties(instance, surface);
      assert(props != nullptr);
      return props->get_surface_capabilities(physicalDevice, surface, pSurfaceCapabilities);
   }

   /* If the layer cannot handle this surface, then necessarily the surface must have been created by the ICDs (or a
    * layer below us.) So it is safe to assume that the ICDs (or layers below us) support VK_KHR_surface and therefore
    * it is safe to can call down. This holds for other entrypoints below.
    */
   return instance.disp.GetPhysicalDeviceSurfaceCapabilitiesKHR(physicalDevice, surface, pSurfaceCapabilities);
}

/**
 * @brief Implements vkGetPhysicalDeviceSurfaceFormatsKHR Vulkan entrypoint.
 */
VKAPI_ATTR VkResult wsi_layer_vkGetPhysicalDeviceSurfaceFormatsKHR(VkPhysicalDevice physicalDevice,
                                                                   VkSurfaceKHR surface, uint32_t *pSurfaceFormatCount,
                                                                   VkSurfaceFormatKHR *pSurfaceFormats)
{
   auto &instance = layer::instance_private_data::get(physicalDevice);
   if (instance.should_layer_handle_surface(physicalDevice, surface))
   {
      wsi::surface_properties *props = wsi::get_surface_properties(instance, surface);
      assert(props != nullptr);
      return props->get_surface_formats(physicalDevice, surface, pSurfaceFormatCount, pSurfaceFormats);
   }

   return instance.disp.GetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, surface, pSurfaceFormatCount,
                                                           pSurfaceFormats);
}

/**
 * @brief Implements vkGetPhysicalDeviceSurfacePresentModesKHR Vulkan entrypoint.
 */
VKAPI_ATTR VkResult wsi_layer_vkGetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice physicalDevice,
                                                                        VkSurfaceKHR surface,
                                                                        uint32_t *pPresentModeCount,
                                                                        VkPresentModeKHR *pPresentModes)
{
   auto &instance = layer::instance_private_data::get(physicalDevice);
   if (instance.should_layer_handle_surface(physicalDevice, surface))
   {
      wsi::surface_properties *props = wsi::get_surface_properties(instance, surface);
      assert(props != nullptr);
      return props->get_surface_present_modes(physicalDevice, surface, pPresentModeCount, pPresentModes);
   }

   return instance.disp.GetPhysicalDeviceSurfacePresentModesKHR(physicalDevice, surface, pPresentModeCount,
                                                                pPresentModes);
}

/**
 * @brief Implements vkGetPhysicalDeviceSurfaceSupportKHR Vulkan entrypoint.
 */
VKAPI_ATTR VkResult wsi_layer_vkGetPhysicalDeviceSurfaceSupportKHR(VkPhysicalDevice physicalDevice,
                                                                   uint32_t queueFamilyIndex, VkSurfaceKHR surface,
                                                                   VkBool32 *pSupported)
{
   auto &instance = layer::instance_private_data::get(physicalDevice);
   if (instance.should_layer_handle_surface(physicalDevice, surface))
   {
      *pSupported = VK_TRUE;
      return VK_SUCCESS;
   }

   return instance.disp.GetPhysicalDeviceSurfaceSupportKHR(physicalDevice, queueFamilyIndex, surface, pSupported);
}

VKAPI_ATTR void wsi_layer_vkDestroySurfaceKHR(VkInstance instance, VkSurfaceKHR surface,
                                              const VkAllocationCallbacks *pAllocator)
{
   auto &instance_data = layer::instance_private_data::get(instance);

   instance_data.disp.DestroySurfaceKHR(instance, surface, pAllocator);

   instance_data.remove_surface(
      surface, util::allocator{ instance_data.get_allocator(), VK_SYSTEM_ALLOCATION_SCOPE_OBJECT, pAllocator });
}

} /* extern "C" */