Vulkan: Exclusive fullscreen support via VK_EXT_full_screen_exclusive

1 files changed, 72 insertions, 15 deletions

diff --git a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
index ded3ed9996..dc24839f88 100644
--- a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
+++ b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
@@ -223,6 +223,7 @@ bool VulkanContext::SelectInstanceExtensions(std::vector<const char*>* extension
     WARN_LOG(VIDEO, "Vulkan: Debug report requested, but extension is not available.");
 
   AddExtension(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME, false);
+  AddExtension(VK_KHR_GET_SURFACE_CAPABILITIES_2_EXTENSION_NAME, false);
 
   return true;
 }
@@ -253,26 +254,26 @@ VulkanContext::GPUList VulkanContext::EnumerateGPUs(VkInstance instance)
 void VulkanContext::PopulateBackendInfo(VideoConfig* config)
 {
   config->backend_info.api_type = APIType::Vulkan;
-  config->backend_info.bSupportsExclusiveFullscreen = false;  // Currently WSI does not allow this.
-  config->backend_info.bSupports3DVision = false;             // D3D-exclusive.
-  config->backend_info.bSupportsOversizedViewports = true;    // Assumed support.
-  config->backend_info.bSupportsEarlyZ = true;                // Assumed support.
-  config->backend_info.bSupportsPrimitiveRestart = true;      // Assumed support.
-  config->backend_info.bSupportsBindingLayout = false;        // Assumed support.
-  config->backend_info.bSupportsPaletteConversion = true;     // Assumed support.
-  config->backend_info.bSupportsClipControl = true;           // Assumed support.
-  config->backend_info.bSupportsMultithreading = true;        // Assumed support.
-  config->backend_info.bSupportsComputeShaders = true;        // Assumed support.
-  config->backend_info.bSupportsGPUTextureDecoding = true;    // Assumed support.
-  config->backend_info.bSupportsBitfield = true;              // Assumed support.
-  config->backend_info.bSupportsPartialDepthCopies = true;    // Assumed support.
-  config->backend_info.bSupportsShaderBinaries = true;        // Assumed support.
-  config->backend_info.bSupportsPipelineCacheData = false;    // Handled via pipeline caches.
+  config->backend_info.bSupports3DVision = false;                  // D3D-exclusive.
+  config->backend_info.bSupportsOversizedViewports = true;         // Assumed support.
+  config->backend_info.bSupportsEarlyZ = true;                     // Assumed support.
+  config->backend_info.bSupportsPrimitiveRestart = true;           // Assumed support.
+  config->backend_info.bSupportsBindingLayout = false;             // Assumed support.
+  config->backend_info.bSupportsPaletteConversion = true;          // Assumed support.
+  config->backend_info.bSupportsClipControl = true;                // Assumed support.
+  config->backend_info.bSupportsMultithreading = true;             // Assumed support.
+  config->backend_info.bSupportsComputeShaders = true;             // Assumed support.
+  config->backend_info.bSupportsGPUTextureDecoding = true;         // Assumed support.
+  config->backend_info.bSupportsBitfield = true;                   // Assumed support.
+  config->backend_info.bSupportsPartialDepthCopies = true;         // Assumed support.
+  config->backend_info.bSupportsShaderBinaries = true;             // Assumed support.
+  config->backend_info.bSupportsPipelineCacheData = false;         // Handled via pipeline caches.
   config->backend_info.bSupportsDynamicSamplerIndexing = true;     // Assumed support.
   config->backend_info.bSupportsPostProcessing = true;             // Assumed support.
   config->backend_info.bSupportsBackgroundCompiling = true;        // Assumed support.
   config->backend_info.bSupportsCopyToVram = true;                 // Assumed support.
   config->backend_info.bSupportsReversedDepthRange = true;         // Assumed support.
+  config->backend_info.bSupportsExclusiveFullscreen = false;       // Dependent on OS and features.
   config->backend_info.bSupportsDualSourceBlend = false;           // Dependent on features.
   config->backend_info.bSupportsGeometryShaders = false;           // Dependent on features.
   config->backend_info.bSupportsGSInstancing = false;              // Dependent on features.
@@ -468,6 +469,12 @@ bool VulkanContext::SelectDeviceExtensions(bool enable_surface)
   if (enable_surface && !AddExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME, true))
     return false;
 
+#ifdef SUPPORTS_VULKAN_EXCLUSIVE_FULLSCREEN
+  // VK_EXT_full_screen_exclusive
+  if (AddExtension(VK_EXT_FULL_SCREEN_EXCLUSIVE_EXTENSION_NAME, true))
+    INFO_LOG(VIDEO, "Using VK_EXT_full_screen_exclusive for exclusive fullscreen.");
+#endif
+
   return true;
 }
 
@@ -937,4 +944,54 @@ void VulkanContext::PopulateShaderSubgroupSupport()
       (subgroup_properties.supportedOperations & required_operations) == required_operations &&
       subgroup_properties.supportedStages & VK_SHADER_STAGE_FRAGMENT_BIT;
 }
+
+bool VulkanContext::SupportsExclusiveFullscreen(const WindowSystemInfo& wsi, VkSurfaceKHR surface)
+{
+#ifdef SUPPORTS_VULKAN_EXCLUSIVE_FULLSCREEN
+  if (!surface || !vkGetPhysicalDeviceSurfaceCapabilities2KHR ||
+      !SupportsDeviceExtension(VK_EXT_FULL_SCREEN_EXCLUSIVE_EXTENSION_NAME))
+  {
+    return false;
+  }
+
+  VkPhysicalDeviceSurfaceInfo2KHR si = {};
+  si.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SURFACE_INFO_2_KHR;
+  si.surface = surface;
+
+  auto platform_info = GetPlatformExclusiveFullscreenInfo(wsi);
+  si.pNext = &platform_info;
+
+  VkSurfaceCapabilities2KHR caps = {};
+  caps.sType = VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR;
+
+  VkSurfaceCapabilitiesFullScreenExclusiveEXT fullscreen_caps = {};
+  fullscreen_caps.sType = VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_FULL_SCREEN_EXCLUSIVE_EXT;
+  fullscreen_caps.fullScreenExclusiveSupported = VK_TRUE;
+  caps.pNext = &fullscreen_caps;
+
+  VkResult res = vkGetPhysicalDeviceSurfaceCapabilities2KHR(m_physical_device, &si, &caps);
+  if (res != VK_SUCCESS)
+  {
+    LOG_VULKAN_ERROR(res, "vkGetPhysicalDeviceSurfaceCapabilities2KHR failed:");
+    return false;
+  }
+
+  return fullscreen_caps.fullScreenExclusiveSupported;
+#else
+  return false;
+#endif
+}
+
+#ifdef WIN32
+VkSurfaceFullScreenExclusiveWin32InfoEXT
+VulkanContext::GetPlatformExclusiveFullscreenInfo(const WindowSystemInfo& wsi)
+{
+  VkSurfaceFullScreenExclusiveWin32InfoEXT info = {};
+  info.sType = VK_STRUCTURE_TYPE_SURFACE_FULL_SCREEN_EXCLUSIVE_WIN32_INFO_EXT;
+  info.hmonitor =
+      MonitorFromWindow(static_cast<HWND>(wsi.render_surface), MONITOR_DEFAULTTOPRIMARY);
+  return info;
+}
+#endif
+
 }  // namespace Vulkan