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// 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/NativeSwapChainImplVk.h"
#include "dawn_native/vulkan/DeviceVk.h"
#include "dawn_native/vulkan/FencedDeleter.h"
#include "dawn_native/vulkan/TextureVk.h"
#include <limits>
namespace dawn_native { namespace vulkan {
namespace {
bool chooseSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes,
bool turnOffVsync,
VkPresentModeKHR* presentMode) {
if (turnOffVsync) {
for (const auto& availablePresentMode : availablePresentModes) {
if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
*presentMode = availablePresentMode;
return true;
}
}
return false;
}
*presentMode = VK_PRESENT_MODE_FIFO_KHR;
return true;
}
bool ChooseSurfaceConfig(const VulkanSurfaceInfo& info,
NativeSwapChainImpl::ChosenConfig* config,
bool turnOffVsync) {
VkPresentModeKHR presentMode;
if (!chooseSwapPresentMode(info.presentModes, turnOffVsync, &presentMode)) {
return false;
}
// TODO(cwallez@chromium.org): For now this is hardcoded to what works with one NVIDIA
// driver. Need to generalize
config->nativeFormat = VK_FORMAT_B8G8R8A8_UNORM;
config->colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
config->format = wgpu::TextureFormat::BGRA8Unorm;
config->minImageCount = 3;
// TODO(cwallez@chromium.org): This is upside down compared to what we want, at least
// on Linux
config->preTransform = info.capabilities.currentTransform;
config->presentMode = presentMode;
config->compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
return true;
}
} // anonymous namespace
NativeSwapChainImpl::NativeSwapChainImpl(Device* device, VkSurfaceKHR surface)
: mSurface(surface), mDevice(device) {
// Call this immediately, so that BackendBinding::GetPreferredSwapChainTextureFormat
// will return a correct result before a SwapChain is created.
UpdateSurfaceConfig();
}
NativeSwapChainImpl::~NativeSwapChainImpl() {
if (mSwapChain != VK_NULL_HANDLE) {
mDevice->GetFencedDeleter()->DeleteWhenUnused(mSwapChain);
mSwapChain = VK_NULL_HANDLE;
}
if (mSurface != VK_NULL_HANDLE) {
mDevice->GetFencedDeleter()->DeleteWhenUnused(mSurface);
mSurface = VK_NULL_HANDLE;
}
}
void NativeSwapChainImpl::UpdateSurfaceConfig() {
if (mDevice->ConsumedError(GatherSurfaceInfo(*ToBackend(mDevice->GetAdapter()), mSurface),
&mInfo)) {
ASSERT(false);
}
if (!ChooseSurfaceConfig(mInfo, &mConfig, mDevice->IsToggleEnabled(Toggle::TurnOffVsync))) {
ASSERT(false);
}
}
void NativeSwapChainImpl::Init(DawnWSIContextVulkan* /*context*/) {
UpdateSurfaceConfig();
}
DawnSwapChainError NativeSwapChainImpl::Configure(WGPUTextureFormat format,
WGPUTextureUsage usage,
uint32_t width,
uint32_t height) {
UpdateSurfaceConfig();
ASSERT(mInfo.capabilities.minImageExtent.width <= width);
ASSERT(mInfo.capabilities.maxImageExtent.width >= width);
ASSERT(mInfo.capabilities.minImageExtent.height <= height);
ASSERT(mInfo.capabilities.maxImageExtent.height >= height);
ASSERT(format == static_cast<WGPUTextureFormat>(GetPreferredFormat()));
// TODO(cwallez@chromium.org): need to check usage works too
// Create the swapchain with the configuration we chose
VkSwapchainKHR oldSwapchain = mSwapChain;
VkSwapchainCreateInfoKHR createInfo;
createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
createInfo.pNext = nullptr;
createInfo.flags = 0;
createInfo.surface = mSurface;
createInfo.minImageCount = mConfig.minImageCount;
createInfo.imageFormat = mConfig.nativeFormat;
createInfo.imageColorSpace = mConfig.colorSpace;
createInfo.imageExtent.width = width;
createInfo.imageExtent.height = height;
createInfo.imageArrayLayers = 1;
createInfo.imageUsage = VulkanImageUsage(static_cast<wgpu::TextureUsage>(usage),
mDevice->GetValidInternalFormat(mConfig.format));
createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
createInfo.queueFamilyIndexCount = 0;
createInfo.pQueueFamilyIndices = nullptr;
createInfo.preTransform = mConfig.preTransform;
createInfo.compositeAlpha = mConfig.compositeAlpha;
createInfo.presentMode = mConfig.presentMode;
createInfo.clipped = false;
createInfo.oldSwapchain = oldSwapchain;
if (mDevice->fn.CreateSwapchainKHR(mDevice->GetVkDevice(), &createInfo, nullptr,
&*mSwapChain) != VK_SUCCESS) {
ASSERT(false);
}
// Gather the swapchain's images. Implementations are allowed to return more images than the
// number we asked for.
uint32_t count = 0;
if (mDevice->fn.GetSwapchainImagesKHR(mDevice->GetVkDevice(), mSwapChain, &count,
nullptr) != VK_SUCCESS) {
ASSERT(false);
}
ASSERT(count >= mConfig.minImageCount);
mSwapChainImages.resize(count);
if (mDevice->fn.GetSwapchainImagesKHR(mDevice->GetVkDevice(), mSwapChain, &count,
AsVkArray(mSwapChainImages.data())) != VK_SUCCESS) {
ASSERT(false);
}
// Do the initial layout transition for all these images from an undefined layout to
// present so that it matches the "present" usage after the first GetNextTexture.
CommandRecordingContext* recordingContext = mDevice->GetPendingRecordingContext();
for (VkImage image : mSwapChainImages) {
VkImageMemoryBarrier barrier;
barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
barrier.pNext = nullptr;
barrier.srcAccessMask = 0;
barrier.dstAccessMask = 0;
barrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
barrier.srcQueueFamilyIndex = 0;
barrier.dstQueueFamilyIndex = 0;
barrier.image = *image;
barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
barrier.subresourceRange.baseMipLevel = 0;
barrier.subresourceRange.levelCount = 1;
barrier.subresourceRange.baseArrayLayer = 0;
barrier.subresourceRange.layerCount = 1;
mDevice->fn.CmdPipelineBarrier(
recordingContext->commandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, nullptr, 0, nullptr, 1, &barrier);
}
if (oldSwapchain != VK_NULL_HANDLE) {
mDevice->GetFencedDeleter()->DeleteWhenUnused(oldSwapchain);
}
return DAWN_SWAP_CHAIN_NO_ERROR;
}
DawnSwapChainError NativeSwapChainImpl::GetNextTexture(DawnSwapChainNextTexture* nextTexture) {
// 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.
VkSemaphore semaphore = VK_NULL_HANDLE;
{
VkSemaphoreCreateInfo createInfo;
createInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
createInfo.pNext = nullptr;
createInfo.flags = 0;
if (mDevice->fn.CreateSemaphore(mDevice->GetVkDevice(), &createInfo, nullptr,
&*semaphore) != VK_SUCCESS) {
ASSERT(false);
}
}
if (mDevice->fn.AcquireNextImageKHR(mDevice->GetVkDevice(), mSwapChain,
std::numeric_limits<uint64_t>::max(), semaphore,
VkFence{}, &mLastImageIndex) != VK_SUCCESS) {
ASSERT(false);
}
nextTexture->texture.u64 =
#if defined(DAWN_PLATFORM_64_BIT)
reinterpret_cast<uint64_t>
#endif
(*mSwapChainImages[mLastImageIndex]);
mDevice->GetPendingRecordingContext()->waitSemaphores.push_back(semaphore);
return DAWN_SWAP_CHAIN_NO_ERROR;
}
DawnSwapChainError NativeSwapChainImpl::Present() {
// This assumes that the image has already been transitioned to the PRESENT layout and
// writes were made available to the stage.
// 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.
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;
VkQueue queue = mDevice->GetQueue();
if (mDevice->fn.QueuePresentKHR(queue, &presentInfo) != VK_SUCCESS) {
ASSERT(false);
}
return DAWN_SWAP_CHAIN_NO_ERROR;
}
wgpu::TextureFormat NativeSwapChainImpl::GetPreferredFormat() const {
return mConfig.format;
}
}} // namespace dawn_native::vulkan
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