| // Copyright 2018 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/vulkan/SwapChainVk.h" |
| |
| #include "common/Compiler.h" |
| #include "dawn_native/Instance.h" |
| #include "dawn_native/Surface.h" |
| #include "dawn_native/vulkan/AdapterVk.h" |
| #include "dawn_native/vulkan/BackendVk.h" |
| #include "dawn_native/vulkan/DeviceVk.h" |
| #include "dawn_native/vulkan/FencedDeleter.h" |
| #include "dawn_native/vulkan/TextureVk.h" |
| #include "dawn_native/vulkan/VulkanError.h" |
| |
| #include <algorithm> |
| |
| #if defined(DAWN_USE_X11) |
| # include "dawn_native/XlibXcbFunctions.h" |
| #endif // defined(DAWN_USE_X11) |
| |
| namespace dawn_native { namespace vulkan { |
| |
| // OldSwapChain |
| |
| // static |
| Ref<OldSwapChain> OldSwapChain::Create(Device* device, const SwapChainDescriptor* descriptor) { |
| return AcquireRef(new OldSwapChain(device, descriptor)); |
| } |
| |
| OldSwapChain::OldSwapChain(Device* device, const SwapChainDescriptor* descriptor) |
| : OldSwapChainBase(device, descriptor) { |
| const auto& im = GetImplementation(); |
| DawnWSIContextVulkan wsiContext = {}; |
| im.Init(im.userData, &wsiContext); |
| |
| ASSERT(im.textureUsage != WGPUTextureUsage_None); |
| mTextureUsage = static_cast<wgpu::TextureUsage>(im.textureUsage); |
| } |
| |
| OldSwapChain::~OldSwapChain() { |
| } |
| |
| TextureBase* OldSwapChain::GetNextTextureImpl(const TextureDescriptor* descriptor) { |
| const auto& im = GetImplementation(); |
| DawnSwapChainNextTexture next = {}; |
| DawnSwapChainError error = im.GetNextTexture(im.userData, &next); |
| |
| if (error) { |
| GetDevice()->HandleError(InternalErrorType::Internal, error); |
| return nullptr; |
| } |
| |
| ::VkImage image = NativeNonDispatachableHandleFromU64<::VkImage>(next.texture.u64); |
| VkImage nativeTexture = VkImage::CreateFromHandle(image); |
| return Texture::CreateForSwapChain(ToBackend(GetDevice()), descriptor, nativeTexture) |
| .Detach(); |
| } |
| |
| MaybeError OldSwapChain::OnBeforePresent(TextureViewBase* view) { |
| Device* device = ToBackend(GetDevice()); |
| |
| // Perform the necessary pipeline barriers for the texture to be used with the usage |
| // requested by the implementation. |
| CommandRecordingContext* recordingContext = device->GetPendingRecordingContext(); |
| ToBackend(view->GetTexture()) |
| ->TransitionUsageNow(recordingContext, mTextureUsage, view->GetSubresourceRange()); |
| |
| DAWN_TRY(device->SubmitPendingCommands()); |
| |
| return {}; |
| } |
| |
| // SwapChain |
| |
| namespace { |
| |
| ResultOrError<VkSurfaceKHR> CreateVulkanSurface(Backend* backend, Surface* surface) { |
| const VulkanGlobalInfo& info = backend->GetGlobalInfo(); |
| const VulkanFunctions& fn = backend->GetFunctions(); |
| VkInstance instance = backend->GetVkInstance(); |
| |
| // May not be used in the platform-specific switches below. |
| DAWN_UNUSED(info); |
| DAWN_UNUSED(fn); |
| DAWN_UNUSED(instance); |
| |
| switch (surface->GetType()) { |
| #if defined(DAWN_ENABLE_BACKEND_METAL) |
| case Surface::Type::MetalLayer: |
| if (info.HasExt(InstanceExt::MetalSurface)) { |
| VkMetalSurfaceCreateInfoEXT createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_METAL_SURFACE_CREATE_INFO_EXT; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| createInfo.pLayer = surface->GetMetalLayer(); |
| |
| VkSurfaceKHR vkSurface = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess( |
| fn.CreateMetalSurfaceEXT(instance, &createInfo, nullptr, &*vkSurface), |
| "CreateMetalSurface")); |
| return vkSurface; |
| } |
| break; |
| #endif // defined(DAWN_ENABLE_BACKEND_METAL) |
| |
| #if defined(DAWN_PLATFORM_WINDOWS) |
| case Surface::Type::WindowsHWND: |
| if (info.HasExt(InstanceExt::Win32Surface)) { |
| VkWin32SurfaceCreateInfoKHR createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| createInfo.hinstance = static_cast<HINSTANCE>(surface->GetHInstance()); |
| createInfo.hwnd = static_cast<HWND>(surface->GetHWND()); |
| |
| VkSurfaceKHR vkSurface = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess( |
| fn.CreateWin32SurfaceKHR(instance, &createInfo, nullptr, &*vkSurface), |
| "CreateWin32Surface")); |
| return vkSurface; |
| } |
| break; |
| #endif // defined(DAWN_PLATFORM_WINDOWS) |
| |
| #if defined(DAWN_USE_X11) |
| case Surface::Type::Xlib: { |
| if (info.HasExt(InstanceExt::XlibSurface)) { |
| VkXlibSurfaceCreateInfoKHR createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| createInfo.dpy = static_cast<Display*>(surface->GetXDisplay()); |
| createInfo.window = surface->GetXWindow(); |
| |
| VkSurfaceKHR vkSurface = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess( |
| fn.CreateXlibSurfaceKHR(instance, &createInfo, nullptr, &*vkSurface), |
| "CreateXlibSurface")); |
| return vkSurface; |
| } |
| |
| // Fall back to using XCB surfaces if the Xlib extension isn't available. |
| // See https://xcb.freedesktop.org/MixingCalls/ for more information about |
| // interoperability between Xlib and XCB |
| const XlibXcbFunctions* xlibXcb = |
| backend->GetInstance()->GetOrCreateXlibXcbFunctions(); |
| ASSERT(xlibXcb != nullptr); |
| |
| if (info.HasExt(InstanceExt::XcbSurface) && xlibXcb->IsLoaded()) { |
| VkXcbSurfaceCreateInfoKHR createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| // The XCB connection lives as long as the X11 display. |
| createInfo.connection = xlibXcb->xGetXCBConnection( |
| static_cast<Display*>(surface->GetXDisplay())); |
| createInfo.window = surface->GetXWindow(); |
| |
| VkSurfaceKHR vkSurface = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess( |
| fn.CreateXcbSurfaceKHR(instance, &createInfo, nullptr, &*vkSurface), |
| "CreateXcbSurfaceKHR")); |
| return vkSurface; |
| } |
| break; |
| } |
| #endif // defined(DAWN_USE_X11) |
| |
| default: |
| break; |
| } |
| |
| return DAWN_VALIDATION_ERROR("Unsupported surface type for Vulkan"); |
| } |
| |
| VkPresentModeKHR ToVulkanPresentMode(wgpu::PresentMode mode) { |
| switch (mode) { |
| case wgpu::PresentMode::Fifo: |
| return VK_PRESENT_MODE_FIFO_KHR; |
| case wgpu::PresentMode::Immediate: |
| return VK_PRESENT_MODE_IMMEDIATE_KHR; |
| case wgpu::PresentMode::Mailbox: |
| return VK_PRESENT_MODE_MAILBOX_KHR; |
| } |
| } |
| |
| uint32_t MinImageCountForPresentMode(VkPresentModeKHR mode) { |
| switch (mode) { |
| case VK_PRESENT_MODE_FIFO_KHR: |
| case VK_PRESENT_MODE_IMMEDIATE_KHR: |
| return 2; |
| case VK_PRESENT_MODE_MAILBOX_KHR: |
| return 3; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| } // anonymous namespace |
| |
| // static |
| ResultOrError<Ref<SwapChain>> SwapChain::Create(Device* device, |
| Surface* surface, |
| NewSwapChainBase* previousSwapChain, |
| const SwapChainDescriptor* descriptor) { |
| Ref<SwapChain> swapchain = AcquireRef(new SwapChain(device, surface, descriptor)); |
| DAWN_TRY(swapchain->Initialize(previousSwapChain)); |
| return swapchain; |
| } |
| |
| SwapChain::~SwapChain() { |
| DetachFromSurface(); |
| } |
| |
| // Note that when we need to re-create the swapchain because it is out of date, |
| // previousSwapChain can be set to `this`. |
| MaybeError SwapChain::Initialize(NewSwapChainBase* previousSwapChain) { |
| Device* device = ToBackend(GetDevice()); |
| Adapter* adapter = ToBackend(GetDevice()->GetAdapter()); |
| |
| VkSwapchainKHR previousVkSwapChain = VK_NULL_HANDLE; |
| |
| if (previousSwapChain != nullptr) { |
| // TODO(crbug.com/dawn/269): The first time a surface is used with a Device, check |
| // it is supported with vkGetPhysicalDeviceSurfaceSupportKHR. |
| |
| // TODO(crbug.com/dawn/269): figure out what should happen when surfaces are used by |
| // multiple backends one after the other. It probably needs to block until the backend |
| // and GPU are completely finished with the previous swapchain. |
| if (previousSwapChain->GetBackendType() != wgpu::BackendType::Vulkan) { |
| return DAWN_VALIDATION_ERROR("vulkan::SwapChain cannot switch between APIs"); |
| } |
| // TODO(crbug.com/dawn/269): use ToBackend once OldSwapChainBase is removed. |
| SwapChain* previousVulkanSwapChain = static_cast<SwapChain*>(previousSwapChain); |
| |
| // TODO(crbug.com/dawn/269): Figure out switching a single surface between multiple |
| // Vulkan devices on different VkInstances. Probably needs to block too! |
| VkInstance previousInstance = |
| ToBackend(previousSwapChain->GetDevice())->GetVkInstance(); |
| if (previousInstance != ToBackend(GetDevice())->GetVkInstance()) { |
| return DAWN_VALIDATION_ERROR("vulkan::SwapChain cannot switch between instances"); |
| } |
| |
| // The previous swapchain is a dawn_native::vulkan::SwapChain so we can reuse its |
| // VkSurfaceKHR provided since they are on the same instance. |
| std::swap(previousVulkanSwapChain->mVkSurface, mVkSurface); |
| |
| // The previous swapchain was on the same Vulkan instance so we can use Vulkan's |
| // "oldSwapchain" mechanism to ensure a seamless transition. We track the previous |
| // swapchain for release immediately so it is not leaked in case of an error. (Vulkan |
| // allows destroying it immediately after the call to vkCreateSwapChainKHR but tracking |
| // using the fenced deleter makes the code simpler). |
| std::swap(previousVulkanSwapChain->mSwapChain, previousVkSwapChain); |
| ToBackend(previousSwapChain->GetDevice()) |
| ->GetFencedDeleter() |
| ->DeleteWhenUnused(previousVkSwapChain); |
| } |
| |
| if (mVkSurface == VK_NULL_HANDLE) { |
| DAWN_TRY_ASSIGN(mVkSurface, CreateVulkanSurface(adapter->GetBackend(), GetSurface())); |
| } |
| |
| VulkanSurfaceInfo surfaceInfo; |
| DAWN_TRY_ASSIGN(surfaceInfo, GatherSurfaceInfo(*adapter, mVkSurface)); |
| |
| DAWN_TRY_ASSIGN(mConfig, ChooseConfig(surfaceInfo)); |
| |
| // TODO Choose config instead of hardcoding |
| VkSwapchainCreateInfoKHR createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| createInfo.surface = mVkSurface; |
| createInfo.minImageCount = mConfig.targetImageCount; |
| createInfo.imageFormat = mConfig.format; |
| createInfo.imageColorSpace = mConfig.colorSpace; |
| createInfo.imageExtent = mConfig.extent; |
| createInfo.imageArrayLayers = 1; |
| createInfo.imageUsage = mConfig.usage; |
| createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; |
| createInfo.queueFamilyIndexCount = 0; |
| createInfo.pQueueFamilyIndices = nullptr; |
| createInfo.preTransform = mConfig.transform; |
| createInfo.compositeAlpha = mConfig.alphaMode; |
| createInfo.presentMode = mConfig.presentMode; |
| createInfo.clipped = false; |
| createInfo.oldSwapchain = previousVkSwapChain; |
| |
| DAWN_TRY(CheckVkSuccess(device->fn.CreateSwapchainKHR(device->GetVkDevice(), &createInfo, |
| nullptr, &*mSwapChain), |
| "CreateSwapChain")); |
| |
| // Gather the swapchain's images. Implementations are allowed to return more images than the |
| // number we asked for. |
| uint32_t count = 0; |
| DAWN_TRY(CheckVkSuccess( |
| device->fn.GetSwapchainImagesKHR(device->GetVkDevice(), mSwapChain, &count, nullptr), |
| "GetSwapChainImages1")); |
| |
| mSwapChainImages.resize(count); |
| DAWN_TRY(CheckVkSuccess( |
| device->fn.GetSwapchainImagesKHR(device->GetVkDevice(), mSwapChain, &count, |
| AsVkArray(mSwapChainImages.data())), |
| "GetSwapChainImages2")); |
| |
| return {}; |
| } |
| |
| ResultOrError<SwapChain::Config> SwapChain::ChooseConfig( |
| const VulkanSurfaceInfo& surfaceInfo) const { |
| Config config; |
| |
| // Choose the present mode. The only guaranteed one is FIFO so it has to be the fallback for |
| // all other present modes. IMMEDIATE has tearing which is generally undesirable so it can't |
| // be the fallback for MAILBOX. So the fallback order is always IMMEDIATE -> MAILBOX -> |
| // FIFO. |
| { |
| auto HasPresentMode = [](const std::vector<VkPresentModeKHR>& modes, |
| VkPresentModeKHR target) -> bool { |
| return std::find(modes.begin(), modes.end(), target) != modes.end(); |
| }; |
| |
| VkPresentModeKHR targetMode = ToVulkanPresentMode(GetPresentMode()); |
| const std::array<VkPresentModeKHR, 3> kPresentModeFallbacks = { |
| VK_PRESENT_MODE_IMMEDIATE_KHR, |
| VK_PRESENT_MODE_MAILBOX_KHR, |
| VK_PRESENT_MODE_FIFO_KHR, |
| }; |
| |
| // Go to the target mode. |
| size_t modeIndex = 0; |
| while (kPresentModeFallbacks[modeIndex] != targetMode) { |
| modeIndex++; |
| } |
| |
| // Find the first available fallback. |
| while (!HasPresentMode(surfaceInfo.presentModes, kPresentModeFallbacks[modeIndex])) { |
| modeIndex++; |
| } |
| |
| ASSERT(modeIndex < kPresentModeFallbacks.size()); |
| config.presentMode = kPresentModeFallbacks[modeIndex]; |
| } |
| |
| // Choose the target width or do a blit. |
| if (GetWidth() < surfaceInfo.capabilities.minImageExtent.width || |
| GetWidth() > surfaceInfo.capabilities.maxImageExtent.width || |
| GetHeight() < surfaceInfo.capabilities.minImageExtent.height || |
| GetHeight() > surfaceInfo.capabilities.maxImageExtent.height) { |
| config.needsBlit = true; |
| } else { |
| config.extent.width = GetWidth(); |
| config.extent.height = GetHeight(); |
| } |
| |
| // Choose the target usage or do a blit. |
| VkImageUsageFlags targetUsages = |
| VulkanImageUsage(GetUsage(), GetDevice()->GetValidInternalFormat(GetFormat())); |
| VkImageUsageFlags supportedUsages = surfaceInfo.capabilities.supportedUsageFlags; |
| if (!IsSubset(targetUsages, supportedUsages)) { |
| config.needsBlit = true; |
| } else { |
| config.usage = targetUsages; |
| config.wgpuUsage = GetUsage(); |
| } |
| |
| // Only support BGRA8Unorm with SRGB color space for now. |
| bool hasBGRA8Unorm = false; |
| for (const VkSurfaceFormatKHR& format : surfaceInfo.formats) { |
| if (format.format == VK_FORMAT_B8G8R8A8_UNORM && |
| format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) { |
| hasBGRA8Unorm = true; |
| break; |
| } |
| } |
| if (!hasBGRA8Unorm) { |
| return DAWN_INTERNAL_ERROR( |
| "Vulkan swapchain must support BGRA8Unorm with SRGB colorspace"); |
| } |
| config.format = VK_FORMAT_B8G8R8A8_UNORM; |
| config.colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR; |
| config.wgpuFormat = wgpu::TextureFormat::BGRA8Unorm; |
| |
| // Only the identity transform with opaque alpha is supported for now. |
| if ((surfaceInfo.capabilities.supportedTransforms & |
| VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) == 0) { |
| return DAWN_VALIDATION_ERROR("Vulkan swapchain must support the identity transform"); |
| } |
| config.transform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; |
| |
| if ((surfaceInfo.capabilities.supportedCompositeAlpha & |
| VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR) == 0) { |
| return DAWN_VALIDATION_ERROR("Vulkan swapchain must support opaque alpha"); |
| } |
| config.alphaMode = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; |
| |
| // Choose the number of images for the swapchain= and clamp it to the min and max from the |
| // surface capabilities. maxImageCount = 0 means there is no limit. |
| ASSERT(surfaceInfo.capabilities.maxImageCount == 0 || |
| surfaceInfo.capabilities.minImageCount <= surfaceInfo.capabilities.maxImageCount); |
| uint32_t targetCount = MinImageCountForPresentMode(config.presentMode); |
| |
| targetCount = std::max(targetCount, surfaceInfo.capabilities.minImageCount); |
| if (surfaceInfo.capabilities.maxImageCount != 0) { |
| targetCount = std::min(targetCount, surfaceInfo.capabilities.maxImageCount); |
| } |
| |
| config.targetImageCount = targetCount; |
| |
| // Choose a valid config for the swapchain texture that will receive the blit. |
| if (config.needsBlit) { |
| // Vulkan has provisions to have surfaces that adapt to the swapchain size. If that's |
| // the case it is very likely that the target extent works, but clamp it just in case. |
| // Using the target extent for the blit is better when possible so that texels don't |
| // get stretched. This case is exposed by having the special "-1" value in both |
| // dimensions of the extent. |
| constexpr uint32_t kSpecialValue = 0xFFFF'FFFF; |
| if (surfaceInfo.capabilities.currentExtent.width == kSpecialValue && |
| surfaceInfo.capabilities.currentExtent.height == kSpecialValue) { |
| // extent = clamp(targetExtent, minExtent, maxExtent) |
| config.extent.width = GetWidth(); |
| config.extent.width = |
| std::min(config.extent.width, surfaceInfo.capabilities.maxImageExtent.width); |
| config.extent.width = |
| std::max(config.extent.width, surfaceInfo.capabilities.minImageExtent.width); |
| |
| config.extent.height = GetHeight(); |
| config.extent.height = |
| std::min(config.extent.height, surfaceInfo.capabilities.maxImageExtent.height); |
| config.extent.height = |
| std::max(config.extent.height, surfaceInfo.capabilities.minImageExtent.height); |
| } else { |
| // If it is not an adaptable swapchain, just use the current extent for the blit |
| // texture. |
| config.extent = surfaceInfo.capabilities.currentExtent; |
| } |
| |
| // TODO(crbug.com/dawn/269): If the swapchain image doesn't support TRANSFER_DST |
| // then we'll need to have a second fallback that uses a blit shader :( |
| if ((supportedUsages & VK_IMAGE_USAGE_TRANSFER_DST_BIT) == 0) { |
| return DAWN_INTERNAL_ERROR( |
| "Swapchain cannot fallback to a blit because of a missing " |
| "VK_IMAGE_USAGE_TRANSFER_DST_BIT"); |
| } |
| config.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT; |
| config.wgpuUsage = wgpu::TextureUsage::CopyDst; |
| } |
| |
| return config; |
| } |
| |
| MaybeError SwapChain::PresentImpl() { |
| Device* device = ToBackend(GetDevice()); |
| |
| CommandRecordingContext* recordingContext = device->GetPendingRecordingContext(); |
| |
| if (mConfig.needsBlit) { |
| // TODO ditto same as present below: eagerly transition the blit texture to CopySrc. |
| mBlitTexture->TransitionUsageNow(recordingContext, wgpu::TextureUsage::CopySrc, |
| mBlitTexture->GetAllSubresources()); |
| mTexture->TransitionUsageNow(recordingContext, wgpu::TextureUsage::CopyDst, |
| mTexture->GetAllSubresources()); |
| |
| VkImageBlit region; |
| region.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; |
| region.srcSubresource.mipLevel = 0; |
| region.srcSubresource.baseArrayLayer = 0; |
| region.srcSubresource.layerCount = 1; |
| region.srcOffsets[0] = {0, 0, 0}; |
| region.srcOffsets[1] = {static_cast<int32_t>(mBlitTexture->GetWidth()), |
| static_cast<int32_t>(mBlitTexture->GetHeight()), 1}; |
| |
| region.dstSubresource = region.srcSubresource; |
| region.dstOffsets[0] = {0, 0, 0}; |
| region.dstOffsets[1] = {static_cast<int32_t>(mTexture->GetWidth()), |
| static_cast<int32_t>(mTexture->GetHeight()), 1}; |
| |
| device->fn.CmdBlitImage(recordingContext->commandBuffer, mBlitTexture->GetHandle(), |
| mBlitTexture->GetCurrentLayoutForSwapChain(), |
| mTexture->GetHandle(), mTexture->GetCurrentLayoutForSwapChain(), |
| 1, ®ion, VK_FILTER_LINEAR); |
| |
| // TODO(crbug.com/dawn/269): Find a way to reuse the blit texture between frames |
| // instead of creating a new one every time. This will involve "un-destroying" the |
| // texture or making the blit texture "external". |
| mBlitTexture->APIDestroy(); |
| mBlitTexture = nullptr; |
| } |
| |
| // TODO(crbug.com/dawn/269): Remove the need for this by eagerly transitioning the |
| // presentable texture to present at the end of submits that use them and ideally even |
| // folding that in the free layout transition at the end of render passes. |
| mTexture->TransitionUsageNow(recordingContext, kPresentTextureUsage, |
| mTexture->GetAllSubresources()); |
| |
| DAWN_TRY(device->SubmitPendingCommands()); |
| |
| // Assuming that the present queue is the same as the graphics queue, the proper |
| // synchronization has already been done on the queue so we don't need to wait on any |
| // semaphores. |
| // TODO(crbug.com/dawn/269): Support the present queue not being the main queue. |
| VkPresentInfoKHR presentInfo; |
| presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR; |
| presentInfo.pNext = nullptr; |
| presentInfo.waitSemaphoreCount = 0; |
| presentInfo.pWaitSemaphores = nullptr; |
| presentInfo.swapchainCount = 1; |
| presentInfo.pSwapchains = &*mSwapChain; |
| presentInfo.pImageIndices = &mLastImageIndex; |
| presentInfo.pResults = nullptr; |
| |
| // Free the texture before present so error handling doesn't skip that step. |
| mTexture->APIDestroy(); |
| mTexture = nullptr; |
| |
| VkResult result = |
| VkResult::WrapUnsafe(device->fn.QueuePresentKHR(device->GetQueue(), &presentInfo)); |
| |
| switch (result) { |
| case VK_SUCCESS: |
| // VK_SUBOPTIMAL_KHR means "a swapchain no longer matches the surface properties |
| // exactly, but can still be used to present to the surface successfully", so we |
| // can also treat it as a "success" error code of vkQueuePresentKHR(). |
| case VK_SUBOPTIMAL_KHR: |
| return {}; |
| |
| // This present cannot be recovered. Re-initialize the VkSwapchain so that future |
| // presents work.. |
| case VK_ERROR_OUT_OF_DATE_KHR: |
| return Initialize(this); |
| |
| // TODO(crbug.com/dawn/269): Allow losing the surface at Dawn's API level? |
| case VK_ERROR_SURFACE_LOST_KHR: |
| default: |
| return CheckVkSuccess(::VkResult(result), "QueuePresent"); |
| } |
| } |
| |
| ResultOrError<TextureViewBase*> SwapChain::GetCurrentTextureViewImpl() { |
| return GetCurrentTextureViewInternal(); |
| } |
| |
| ResultOrError<TextureViewBase*> SwapChain::GetCurrentTextureViewInternal(bool isReentrant) { |
| Device* device = ToBackend(GetDevice()); |
| |
| // Transiently create a semaphore that will be signaled when the presentation engine is done |
| // with the swapchain image. Further operations on the image will wait for this semaphore. |
| VkSemaphoreCreateInfo createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| |
| VkSemaphore semaphore = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess( |
| device->fn.CreateSemaphore(device->GetVkDevice(), &createInfo, nullptr, &*semaphore), |
| "CreateSemaphore")); |
| |
| VkResult result = VkResult::WrapUnsafe(device->fn.AcquireNextImageKHR( |
| device->GetVkDevice(), mSwapChain, std::numeric_limits<uint64_t>::max(), semaphore, |
| VkFence{}, &mLastImageIndex)); |
| |
| if (result == VK_SUCCESS) { |
| // TODO(crbug.com/dawn/269) put the semaphore on the texture so it is waited on when |
| // used instead of directly on the recording context? |
| device->GetPendingRecordingContext()->waitSemaphores.push_back(semaphore); |
| } else { |
| // The semaphore wasn't actually used (? this is unclear in the spec). Delete it when |
| // we get a chance. |
| ToBackend(GetDevice())->GetFencedDeleter()->DeleteWhenUnused(semaphore); |
| } |
| |
| switch (result) { |
| // TODO(crbug.com/dawn/269): Introduce a mechanism to notify the application that |
| // the swapchain is in a suboptimal state? |
| case VK_SUBOPTIMAL_KHR: |
| case VK_SUCCESS: |
| break; |
| |
| case VK_ERROR_OUT_OF_DATE_KHR: { |
| // Prevent infinite recursive calls to GetCurrentTextureViewInternal when the |
| // swapchains always return that they are out of date. |
| if (isReentrant) { |
| // TODO(crbug.com/dawn/269): Allow losing the surface instead? |
| return DAWN_INTERNAL_ERROR( |
| "Wasn't able to recuperate the surface after a VK_ERROR_OUT_OF_DATE_KHR"); |
| } |
| |
| // Re-initialize the VkSwapchain and try getting the texture again. |
| DAWN_TRY(Initialize(this)); |
| return GetCurrentTextureViewInternal(true); |
| } |
| |
| // TODO(crbug.com/dawn/269): Allow losing the surface at Dawn's API level? |
| case VK_ERROR_SURFACE_LOST_KHR: |
| default: |
| DAWN_TRY(CheckVkSuccess(::VkResult(result), "AcquireNextImage")); |
| } |
| |
| TextureDescriptor textureDesc; |
| textureDesc.size.width = mConfig.extent.width; |
| textureDesc.size.height = mConfig.extent.height; |
| textureDesc.format = mConfig.wgpuFormat; |
| textureDesc.usage = mConfig.wgpuUsage; |
| |
| VkImage currentImage = mSwapChainImages[mLastImageIndex]; |
| mTexture = Texture::CreateForSwapChain(device, &textureDesc, currentImage); |
| |
| // In the happy path we can use the swapchain image directly. |
| if (!mConfig.needsBlit) { |
| // TODO(dawn:723): change to not use AcquireRef for reentrant object creation. |
| return mTexture->APICreateView(); |
| } |
| |
| // The blit texture always perfectly matches what the user requested for the swapchain. |
| // We need to add the Vulkan TRANSFER_SRC flag for the vkCmdBlitImage call. |
| TextureDescriptor desc = GetSwapChainBaseTextureDescriptor(this); |
| DAWN_TRY_ASSIGN(mBlitTexture, |
| Texture::Create(device, &desc, VK_IMAGE_USAGE_TRANSFER_SRC_BIT)); |
| // TODO(dawn:723): change to not use AcquireRef for reentrant object creation. |
| return mBlitTexture->APICreateView(); |
| } |
| |
| void SwapChain::DetachFromSurfaceImpl() { |
| if (mTexture != nullptr) { |
| mTexture->APIDestroy(); |
| mTexture = nullptr; |
| } |
| |
| if (mBlitTexture != nullptr) { |
| mBlitTexture->APIDestroy(); |
| mBlitTexture = nullptr; |
| } |
| |
| // The swapchain images are destroyed with the swapchain. |
| if (mSwapChain != VK_NULL_HANDLE) { |
| ToBackend(GetDevice())->GetFencedDeleter()->DeleteWhenUnused(mSwapChain); |
| mSwapChain = VK_NULL_HANDLE; |
| } |
| |
| if (mVkSurface != VK_NULL_HANDLE) { |
| ToBackend(GetDevice())->GetFencedDeleter()->DeleteWhenUnused(mVkSurface); |
| mVkSurface = VK_NULL_HANDLE; |
| } |
| } |
| |
| }} // namespace dawn_native::vulkan |
