[d3d11] Implement DXGI_SWAP_EFFECT_SEQUENTIAL and FLIP_SEQUENTIALdxgi-sequential

Requires sparse since we have no other means to swap the backing image.

3 files changed, 153 insertions, 35 deletions

diff --git a/src/d3d11/d3d11_swapchain.cpp b/src/d3d11/d3d11_swapchain.cpp
index 0e823f41..d9cc6172 100644
--- a/src/d3d11/d3d11_swapchain.cpp
+++ b/src/d3d11/d3d11_swapchain.cpp
@@ -140,12 +140,12 @@ namespace dxvk {
           void**                    ppBuffer) {
     InitReturnPtr(ppBuffer);
 
-    if (BufferId > 0) {
-      Logger::err("D3D11: GetImage: BufferId > 0 not supported");
+    if (BufferId > m_backBuffers.size()) {
+      Logger::err(str::format("D3D11: Invalid buffer index: ", BufferId));
       return DXGI_ERROR_UNSUPPORTED;
     }
 
-    return m_backBuffer->QueryInterface(riid, ppBuffer);
+    return m_backBuffers[BufferId]->QueryInterface(riid, ppBuffer);
   }
 
 
@@ -396,7 +396,10 @@ namespace dxvk {
 
       if (m_hud != nullptr)
         m_hud->render(m_context, info.format, info.imageExtent);
-      
+
+      if (!SyncInterval || i == SyncInterval - 1)
+        RotateBackBuffer();
+
       SubmitPresent(immediateContext, sync, i);
     }
 
@@ -559,11 +562,25 @@ namespace dxvk {
 
 
   void D3D11SwapChain::CreateBackBuffer() {
+    bool sequentialPresent = false;
+
+    if (IsSequentialSwapChain()) {
+      if (!(sequentialPresent = SupportsSparseImages())) {
+        Logger::warn("Sequential present mode requeted, but sparse images not supported"
+                     "by the Vulkan implementation. Falling back to Discard semantics.");
+      }
+    }
+
     // Explicitly destroy current swap image before
     // creating a new one to free up resources
-    m_swapImage         = nullptr;
-    m_swapImageView     = nullptr;
-    m_backBuffer        = nullptr;
+    m_swapImages.clear();
+    m_backBuffers.clear();
+    m_swapImageView = nullptr;
+
+    uint32_t bufferCount = 1u;
+
+    if (sequentialPresent)
+      bufferCount = m_desc.BufferCount;
 
     // Create new back buffer
     D3D11_COMMON_TEXTURE_DESC desc;
@@ -592,27 +609,47 @@ namespace dxvk {
     if (m_desc.Flags & DXGI_SWAP_CHAIN_FLAG_GDI_COMPATIBLE)
       desc.MiscFlags |= D3D11_RESOURCE_MISC_GDI_COMPATIBLE;
     
+    if (sequentialPresent)
+      desc.MiscFlags |= D3D11_RESOURCE_MISC_TILED;
+
     DXGI_USAGE dxgiUsage = DXGI_USAGE_BACK_BUFFER;
 
     if (m_desc.SwapEffect == DXGI_SWAP_EFFECT_DISCARD
      || m_desc.SwapEffect == DXGI_SWAP_EFFECT_FLIP_DISCARD)
       dxgiUsage |= DXGI_USAGE_DISCARD_ON_PRESENT;
 
-    m_backBuffer = new D3D11Texture2D(m_parent, this, &desc, dxgiUsage);
-    m_swapImage = GetCommonTexture(m_backBuffer.ptr())->GetImage();
+    for (uint32_t i = 0; i < bufferCount; i++) {
+      m_backBuffers.push_back(new D3D11Texture2D(m_parent, this, &desc, dxgiUsage));
+      m_swapImages.push_back(GetCommonTexture(m_backBuffers.back().ptr())->GetImage());
+
+      dxgiUsage |= DXGI_USAGE_READ_ONLY;
+    }
+
+    // If necessary, create a sparse page allocator
+    m_sparseFrameIndex = 0;
+
+    if (sequentialPresent) {
+      m_sparsePagesPerImage = m_swapImages.front()->getSparsePageTable()->getPageCount();
+
+      m_sparseAllocator = m_device->createSparsePageAllocator();
+      m_sparseAllocator->setCapacity(m_sparsePagesPerImage * bufferCount);
+    } else {
+      m_sparsePagesPerImage = 0;
+      m_sparseAllocator = nullptr;
+    }
 
     // Create an image view that allows the
     // image to be bound as a shader resource.
     DxvkImageViewCreateInfo viewInfo;
     viewInfo.type       = VK_IMAGE_VIEW_TYPE_2D;
-    viewInfo.format     = m_swapImage->info().format;
+    viewInfo.format     = m_swapImages.front()->info().format;
     viewInfo.usage      = VK_IMAGE_USAGE_SAMPLED_BIT;
     viewInfo.aspect     = VK_IMAGE_ASPECT_COLOR_BIT;
     viewInfo.minLevel   = 0;
     viewInfo.numLevels  = 1;
     viewInfo.minLayer   = 0;
     viewInfo.numLayers  = 1;
-    m_swapImageView = m_device->createImageView(m_swapImage, viewInfo);
+    m_swapImageView = m_device->createImageView(m_swapImages.front(), viewInfo);
     
     // Initialize the image so that we can use it. Clearing
     // to black prevents garbled output for the first frame.
@@ -626,8 +663,30 @@ namespace dxvk {
     m_context->beginRecording(
       m_device->createCommandList());
     
-    m_context->initImage(m_swapImage,
-      subresources, VK_IMAGE_LAYOUT_UNDEFINED);
+    for (uint32_t i = 0; i < m_swapImages.size(); i++) {
+      if (sequentialPresent) {
+        DxvkSparseBindInfo sparseBind;
+        sparseBind.dstResource = m_swapImages[i];
+        sparseBind.srcAllocator = m_sparseAllocator;
+
+        for (uint32_t j = 0; j < m_sparsePagesPerImage; j++) {
+          auto& bind = sparseBind.binds.emplace_back();
+          bind.mode = DxvkSparseBindMode::Bind;
+          bind.srcPage = j + i * m_sparsePagesPerImage;
+          bind.dstPage = j;
+        }
+
+        m_context->updatePageTable(sparseBind,
+          DxvkSparseBindFlag::SkipSynchronization);
+        m_context->initSparseImage(m_swapImages[i]);
+
+        Rc<DxvkImageView> view = m_device->createImageView(m_swapImages.front(), viewInfo);
+        m_context->clearRenderTarget(view, VK_IMAGE_ASPECT_COLOR_BIT, VkClearValue());
+      } else {
+        m_context->initImage(m_swapImages[i],
+          subresources, VK_IMAGE_LAYOUT_UNDEFINED);
+      }
+    }
 
     m_device->submitCommandList(
       m_context->endRecording(),
@@ -738,6 +797,51 @@ namespace dxvk {
   }
 
 
+  void D3D11SwapChain::RotateBackBuffer() {
+    uint32_t bufferCount = m_swapImages.size();
+
+    if (bufferCount < 2)
+      return;
+
+    m_sparseFrameIndex += 1;
+    m_sparseFrameIndex %= bufferCount;
+
+    for (uint32_t i = 0; i < bufferCount; i++) {
+      uint32_t firstImage = (m_sparseFrameIndex + i) % bufferCount;
+
+      DxvkSparseBindInfo sparseBind;
+      sparseBind.dstResource = m_swapImages[i];
+      sparseBind.srcAllocator = m_sparseAllocator;
+
+      for (uint32_t j = 0; j < m_sparsePagesPerImage; j++) {
+        auto& bind = sparseBind.binds.emplace_back();
+        bind.mode = DxvkSparseBindMode::Bind;
+        bind.srcPage = j + firstImage * m_sparsePagesPerImage;
+        bind.dstPage = j;
+      }
+
+      m_context->updatePageTable(sparseBind, 0);
+    }
+  }
+
+
+  bool D3D11SwapChain::IsSequentialSwapChain() const {
+    return m_desc.SwapEffect == DXGI_SWAP_EFFECT_SEQUENTIAL
+        || m_desc.SwapEffect == DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
+  }
+
+
+  bool D3D11SwapChain::SupportsSparseImages() const {
+    const auto& properties = m_device->properties().core.properties;
+    const auto& features = m_device->features().core.features;
+
+    return features.sparseBinding
+        && features.sparseResidencyImage2D
+        && features.sparseResidencyAliased
+        && properties.sparseProperties.residencyStandard2DBlockShape;
+  }
+
+
   std::string D3D11SwapChain::GetApiName() const {
     Com<IDXGIDXVKDevice> device;
     m_parent->QueryInterface(__uuidof(IDXGIDXVKDevice), reinterpret_cast<void**>(&device));
diff --git a/src/d3d11/d3d11_swapchain.h b/src/d3d11/d3d11_swapchain.h
index 00073d76..df9f5f16 100644
--- a/src/d3d11/d3d11_swapchain.h
+++ b/src/d3d11/d3d11_swapchain.h
@@ -95,42 +95,46 @@ namespace dxvk {
 
     Com<D3D11DXGIDevice, false> m_dxgiDevice;
     
-    D3D11Device*              m_parent;
-    Com<IDXGIVkSurfaceFactory> m_surfaceFactory;
+    D3D11Device*                m_parent;
+    Com<IDXGIVkSurfaceFactory>  m_surfaceFactory;
 
-    DXGI_SWAP_CHAIN_DESC1     m_desc;
+    DXGI_SWAP_CHAIN_DESC1       m_desc;
 
-    Rc<DxvkDevice>            m_device;
-    Rc<DxvkContext>           m_context;
+    Rc<DxvkDevice>              m_device;
+    Rc<DxvkContext>             m_context;
 
-    Rc<Presenter>             m_presenter;
+    Rc<Presenter>               m_presenter;
 
-    Rc<DxvkImage>             m_swapImage;
-    Rc<DxvkImageView>         m_swapImageView;
-    Rc<DxvkSwapchainBlitter>  m_blitter;
+    uint32_t                    m_sparseFrameIndex = 0u;
+    uint32_t                    m_sparsePagesPerImage = 0u;
+    Rc<DxvkSparsePageAllocator> m_sparseAllocator;
 
-    Rc<hud::Hud>              m_hud;
+    std::vector<Rc<DxvkImage>>  m_swapImages;
+    Rc<DxvkImageView>           m_swapImageView;
+    Rc<DxvkSwapchainBlitter>    m_blitter;
 
-    Com<D3D11Texture2D, false> m_backBuffer;
-    DxvkSubmitStatus          m_presentStatus;
+    Rc<hud::Hud>                m_hud;
+
+    std::vector<Com<D3D11Texture2D, false>> m_backBuffers;
+    DxvkSubmitStatus            m_presentStatus;
 
     std::vector<Rc<DxvkImageView>> m_imageViews;
 
-    uint64_t                m_frameId      = DXGI_MAX_SWAP_CHAIN_BUFFERS;
-    uint32_t                m_frameLatency = DefaultFrameLatency;
-    uint32_t                m_frameLatencyCap = 0;
-    HANDLE                  m_frameLatencyEvent = nullptr;
-    Rc<sync::CallbackFence> m_frameLatencySignal;
+    uint64_t                    m_frameId      = DXGI_MAX_SWAP_CHAIN_BUFFERS;
+    uint32_t                    m_frameLatency = DefaultFrameLatency;
+    uint32_t                    m_frameLatencyCap = 0;
+    HANDLE                      m_frameLatencyEvent = nullptr;
+    Rc<sync::CallbackFence>     m_frameLatencySignal;
 
-    bool                    m_dirty = true;
+    bool                        m_dirty = true;
 
-    VkColorSpaceKHR         m_colorspace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
+    VkColorSpaceKHR             m_colorspace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
 
     std::optional<VkHdrMetadataEXT> m_hdrMetadata;
-    bool m_dirtyHdrMetadata = true;
+    bool                        m_dirtyHdrMetadata = true;
 
-    dxvk::mutex               m_frameStatisticsLock;
-    DXGI_VK_FRAME_STATISTICS  m_frameStatistics = { };
+    dxvk::mutex                 m_frameStatisticsLock;
+    DXGI_VK_FRAME_STATISTICS    m_frameStatistics = { };
 
     HRESULT PresentImage(UINT SyncInterval);
 
@@ -172,6 +176,12 @@ namespace dxvk {
     
     VkFullScreenExclusiveEXT PickFullscreenMode();
 
+    void RotateBackBuffer();
+
+    bool IsSequentialSwapChain() const;
+
+    bool SupportsSparseImages() const;
+
     std::string GetApiName() const;
 
   };
diff --git a/src/d3d11/d3d11_texture.cpp b/src/d3d11/d3d11_texture.cpp
index 7a8c6043..26e7bea6 100644
--- a/src/d3d11/d3d11_texture.cpp
+++ b/src/d3d11/d3d11_texture.cpp
@@ -249,6 +249,10 @@ namespace dxvk {
 
     if (imageInfo.sharing.mode == DxvkSharedHandleMode::Export)
       ExportImageInfo();
+
+    // Hide some internal flags as necessary
+    if (DxgiUsage & DXGI_USAGE_BACK_BUFFER)
+      m_desc.MiscFlags &= ~D3D11_RESOURCE_MISC_TILED;
   }