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Xenia-Canary/src/xenia/ui/vulkan/vulkan_swap_chain.cc

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/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2016 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include "xenia/ui/vulkan/vulkan_swap_chain.h"
#include <gflags/gflags.h>
#include <mutex>
#include <string>
#include "xenia/base/assert.h"
#include "xenia/base/logging.h"
#include "xenia/base/math.h"
#include "xenia/ui/vulkan/vulkan.h"
#include "xenia/ui/vulkan/vulkan_device.h"
#include "xenia/ui/vulkan/vulkan_instance.h"
#include "xenia/ui/vulkan/vulkan_util.h"
DEFINE_bool(vulkan_random_clear_color, false,
"Randomizes framebuffer clear color.");
namespace xe {
namespace ui {
namespace vulkan {
VulkanSwapChain::VulkanSwapChain(VulkanInstance* instance, VulkanDevice* device)
: instance_(instance), device_(device) {}
VulkanSwapChain::~VulkanSwapChain() { Shutdown(); }
bool VulkanSwapChain::Initialize(VkSurfaceKHR surface) {
surface_ = surface;
VkBool32 surface_supported = false;
auto err = vkGetPhysicalDeviceSurfaceSupportKHR(
*device_, device_->queue_family_index(), surface, &surface_supported);
assert_true(surface_supported);
CheckResult(err, "vkGetPhysicalDeviceSurfaceSupportKHR");
// Query supported target formats.
uint32_t count = 0;
err =
vkGetPhysicalDeviceSurfaceFormatsKHR(*device_, surface_, &count, nullptr);
CheckResult(err, "vkGetPhysicalDeviceSurfaceFormatsKHR");
std::vector<VkSurfaceFormatKHR> surface_formats;
surface_formats.resize(count);
err = vkGetPhysicalDeviceSurfaceFormatsKHR(*device_, surface_, &count,
surface_formats.data());
CheckResult(err, "vkGetPhysicalDeviceSurfaceFormatsKHR");
// If the format list includes just one entry of VK_FORMAT_UNDEFINED the
// surface has no preferred format.
// Otherwise, at least one supported format will be returned.
assert_true(surface_formats.size() >= 1);
if (surface_formats.size() == 1 &&
surface_formats[0].format == VK_FORMAT_UNDEFINED) {
// Fallback to common RGBA.
surface_format_ = VK_FORMAT_R8G8B8A8_UNORM;
} else {
// Use first defined format.
surface_format_ = surface_formats[0].format;
}
// Query surface min/max/caps.
VkSurfaceCapabilitiesKHR surface_caps;
err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(*device_, surface_,
&surface_caps);
CheckResult(err, "vkGetPhysicalDeviceSurfaceCapabilitiesKHR");
// Query surface properties so we can configure ourselves within bounds.
std::vector<VkPresentModeKHR> present_modes;
err = vkGetPhysicalDeviceSurfacePresentModesKHR(*device_, surface_, &count,
nullptr);
CheckResult(err, "vkGetPhysicalDeviceSurfacePresentModesKHR");
present_modes.resize(count);
err = vkGetPhysicalDeviceSurfacePresentModesKHR(*device_, surface_, &count,
present_modes.data());
CheckResult(err, "vkGetPhysicalDeviceSurfacePresentModesKHR");
// Calculate swapchain target dimensions.
VkExtent2D extent = surface_caps.currentExtent;
if (surface_caps.currentExtent.width == -1) {
assert_true(surface_caps.currentExtent.height == -1);
// Undefined extents, so we need to pick something.
XELOGI("Swap chain target surface extents undefined; guessing value");
extent.width = 1280;
extent.height = 720;
}
surface_width_ = extent.width;
surface_height_ = extent.height;
// Always prefer mailbox mode (non-tearing, low-latency).
// If it's not available we'll use immediate (tearing, low-latency).
// If not even that we fall back to FIFO, which sucks.
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
for (size_t i = 0; i < present_modes.size(); ++i) {
if (present_modes[i] == VK_PRESENT_MODE_MAILBOX_KHR) {
// This is the best, so early-out.
present_mode = VK_PRESENT_MODE_MAILBOX_KHR;
break;
} else if (present_modes[i] == VK_PRESENT_MODE_IMMEDIATE_KHR) {
present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
}
}
// Determine the number of images (1 + number queued).
uint32_t image_count = surface_caps.minImageCount + 1;
if (surface_caps.maxImageCount > 0 &&
image_count > surface_caps.maxImageCount) {
// Too many requested - use whatever we can.
XELOGI("Requested number of swapchain images (%d) exceeds maximum (%d)",
image_count, surface_caps.maxImageCount);
image_count = surface_caps.maxImageCount;
}
// Always pass through whatever transform the surface started with (so long
// as it's supported).
VkSurfaceTransformFlagBitsKHR pre_transform = surface_caps.currentTransform;
VkSwapchainCreateInfoKHR create_info;
create_info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
create_info.pNext = nullptr;
create_info.flags = 0;
create_info.surface = surface_;
create_info.minImageCount = image_count;
create_info.imageFormat = surface_format_;
create_info.imageColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
create_info.imageExtent.width = extent.width;
create_info.imageExtent.height = extent.height;
create_info.imageArrayLayers = 1;
create_info.imageUsage =
VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
create_info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
create_info.queueFamilyIndexCount = 0;
create_info.pQueueFamilyIndices = nullptr;
create_info.preTransform = pre_transform;
create_info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
create_info.presentMode = present_mode;
create_info.clipped = VK_TRUE;
create_info.oldSwapchain = nullptr;
XELOGVK("Creating swap chain:");
XELOGVK(" minImageCount = %u", create_info.minImageCount);
XELOGVK(" imageFormat = %s", to_string(create_info.imageFormat));
XELOGVK(" imageExtent = %d x %d", create_info.imageExtent.width,
create_info.imageExtent.height);
auto pre_transform_str = to_flags_string(create_info.preTransform);
XELOGVK(" preTransform = %s", pre_transform_str.c_str());
XELOGVK(" imageArrayLayers = %u", create_info.imageArrayLayers);
XELOGVK(" presentMode = %s", to_string(create_info.presentMode));
XELOGVK(" clipped = %s", create_info.clipped ? "true" : "false");
XELOGVK(" imageColorSpace = %s", to_string(create_info.imageColorSpace));
auto image_usage_flags_str = to_flags_string(create_info.imageUsage);
XELOGVK(" imageUsageFlags = %s", image_usage_flags_str.c_str());
XELOGVK(" imageSharingMode = %s", to_string(create_info.imageSharingMode));
XELOGVK(" queueFamilyCount = %u", create_info.queueFamilyIndexCount);
err = vkCreateSwapchainKHR(*device_, &create_info, nullptr, &handle);
if (err) {
XELOGE("Failed to create swapchain: %s", to_string(err));
return false;
}
// Create the pool used for transient buffers, so we can reset them all at
// once.
VkCommandPoolCreateInfo cmd_pool_info;
cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
cmd_pool_info.pNext = nullptr;
cmd_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
cmd_pool_info.queueFamilyIndex = device_->queue_family_index();
err = vkCreateCommandPool(*device_, &cmd_pool_info, nullptr, &cmd_pool_);
CheckResult(err, "vkCreateCommandPool");
// Primary command buffer
VkCommandBufferAllocateInfo cmd_buffer_info;
cmd_buffer_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
cmd_buffer_info.pNext = nullptr;
cmd_buffer_info.commandPool = cmd_pool_;
cmd_buffer_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
cmd_buffer_info.commandBufferCount = 2;
err = vkAllocateCommandBuffers(*device_, &cmd_buffer_info, &cmd_buffer_);
CheckResult(err, "vkCreateCommandBuffer");
// Make two command buffers we'll do all our primary rendering from.
VkCommandBuffer command_buffers[2];
cmd_buffer_info.level = VK_COMMAND_BUFFER_LEVEL_SECONDARY;
cmd_buffer_info.commandBufferCount = 2;
err = vkAllocateCommandBuffers(*device_, &cmd_buffer_info, command_buffers);
CheckResult(err, "vkCreateCommandBuffer");
render_cmd_buffer_ = command_buffers[0];
copy_cmd_buffer_ = command_buffers[1];
// Create the render pass used to draw to the swap chain.
// The actual framebuffer attached will depend on which image we are drawing
// into.
VkAttachmentDescription color_attachment;
color_attachment.flags = 0;
color_attachment.format = surface_format_;
color_attachment.samples = VK_SAMPLE_COUNT_1_BIT;
color_attachment.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD; // CLEAR;
color_attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
color_attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
color_attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
color_attachment.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
color_attachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference color_reference;
color_reference.attachment = 0;
color_reference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference depth_reference;
depth_reference.attachment = VK_ATTACHMENT_UNUSED;
depth_reference.layout = VK_IMAGE_LAYOUT_UNDEFINED;
VkSubpassDescription render_subpass;
render_subpass.flags = 0;
render_subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
render_subpass.inputAttachmentCount = 0;
render_subpass.pInputAttachments = nullptr;
render_subpass.colorAttachmentCount = 1;
render_subpass.pColorAttachments = &color_reference;
render_subpass.pResolveAttachments = nullptr;
render_subpass.pDepthStencilAttachment = &depth_reference;
render_subpass.preserveAttachmentCount = 0,
render_subpass.pPreserveAttachments = nullptr;
VkRenderPassCreateInfo render_pass_info;
render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
render_pass_info.pNext = nullptr;
render_pass_info.flags = 0;
render_pass_info.attachmentCount = 1;
render_pass_info.pAttachments = &color_attachment;
render_pass_info.subpassCount = 1;
render_pass_info.pSubpasses = &render_subpass;
render_pass_info.dependencyCount = 0;
render_pass_info.pDependencies = nullptr;
err = vkCreateRenderPass(*device_, &render_pass_info, nullptr, &render_pass_);
CheckResult(err, "vkCreateRenderPass");
// Create a semaphore we'll use to synchronize with the swapchain.
VkSemaphoreCreateInfo semaphore_info;
semaphore_info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
semaphore_info.pNext = nullptr;
semaphore_info.flags = 0;
err = vkCreateSemaphore(*device_, &semaphore_info, nullptr,
&image_available_semaphore_);
CheckResult(err, "vkCreateSemaphore");
// Create another semaphore used to synchronize writes to the swap image.
err = vkCreateSemaphore(*device_, &semaphore_info, nullptr,
&image_usage_semaphore_);
CheckResult(err, "vkCreateSemaphore");
// Get images we will be presenting to.
// Note that this may differ from our requested amount.
uint32_t actual_image_count = 0;
std::vector<VkImage> images;
err = vkGetSwapchainImagesKHR(*device_, handle, &actual_image_count, nullptr);
CheckResult(err, "vkGetSwapchainImagesKHR");
images.resize(actual_image_count);
err = vkGetSwapchainImagesKHR(*device_, handle, &actual_image_count,
images.data());
CheckResult(err, "vkGetSwapchainImagesKHR");
// Create all buffers.
buffers_.resize(images.size());
for (size_t i = 0; i < buffers_.size(); ++i) {
if (!InitializeBuffer(&buffers_[i], images[i])) {
XELOGE("Failed to initialize a swapchain buffer");
return false;
}
buffers_[i].image_layout = VK_IMAGE_LAYOUT_UNDEFINED;
}
XELOGVK("Swap chain initialized successfully!");
return true;
}
bool VulkanSwapChain::InitializeBuffer(Buffer* buffer, VkImage target_image) {
DestroyBuffer(buffer);
buffer->image = target_image;
// Create an image view for the presentation image.
// This will be used as a framebuffer attachment.
VkImageViewCreateInfo image_view_info;
image_view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
image_view_info.pNext = nullptr;
image_view_info.flags = 0;
image_view_info.image = buffer->image;
image_view_info.viewType = VK_IMAGE_VIEW_TYPE_2D;
image_view_info.format = surface_format_;
image_view_info.components.r = VK_COMPONENT_SWIZZLE_R;
image_view_info.components.g = VK_COMPONENT_SWIZZLE_G;
image_view_info.components.b = VK_COMPONENT_SWIZZLE_B;
image_view_info.components.a = VK_COMPONENT_SWIZZLE_A;
image_view_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
image_view_info.subresourceRange.baseMipLevel = 0;
image_view_info.subresourceRange.levelCount = 1;
image_view_info.subresourceRange.baseArrayLayer = 0;
image_view_info.subresourceRange.layerCount = 1;
auto err = vkCreateImageView(*device_, &image_view_info, nullptr,
&buffer->image_view);
CheckResult(err, "vkCreateImageView");
// Create the framebuffer used to render into this image.
VkImageView attachments[] = {buffer->image_view};
VkFramebufferCreateInfo framebuffer_info;
framebuffer_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebuffer_info.pNext = nullptr;
framebuffer_info.flags = 0;
framebuffer_info.renderPass = render_pass_;
framebuffer_info.attachmentCount =
static_cast<uint32_t>(xe::countof(attachments));
framebuffer_info.pAttachments = attachments;
framebuffer_info.width = surface_width_;
framebuffer_info.height = surface_height_;
framebuffer_info.layers = 1;
err = vkCreateFramebuffer(*device_, &framebuffer_info, nullptr,
&buffer->framebuffer);
CheckResult(err, "vkCreateFramebuffer");
return true;
}
void VulkanSwapChain::DestroyBuffer(Buffer* buffer) {
if (buffer->framebuffer) {
vkDestroyFramebuffer(*device_, buffer->framebuffer, nullptr);
buffer->framebuffer = nullptr;
}
if (buffer->image_view) {
vkDestroyImageView(*device_, buffer->image_view, nullptr);
buffer->image_view = nullptr;
}
// Image is taken care of by the presentation engine.
buffer->image = nullptr;
}
bool VulkanSwapChain::Reinitialize() {
// Hacky, but stash the surface so we can reuse it.
auto surface = surface_;
surface_ = nullptr;
Shutdown();
return Initialize(surface);
}
void VulkanSwapChain::WaitAndSignalSemaphore(VkSemaphore sem) {
wait_and_signal_semaphores_.push_back(sem);
}
void VulkanSwapChain::Shutdown() {
// TODO(benvanik): properly wait for a clean state.
for (auto& buffer : buffers_) {
DestroyBuffer(&buffer);
}
buffers_.clear();
if (image_available_semaphore_) {
vkDestroySemaphore(*device_, image_available_semaphore_, nullptr);
image_available_semaphore_ = nullptr;
}
if (render_pass_) {
vkDestroyRenderPass(*device_, render_pass_, nullptr);
render_pass_ = nullptr;
}
if (render_cmd_buffer_) {
vkFreeCommandBuffers(*device_, cmd_pool_, 1, &render_cmd_buffer_);
render_cmd_buffer_ = nullptr;
}
if (cmd_pool_) {
vkDestroyCommandPool(*device_, cmd_pool_, nullptr);
cmd_pool_ = nullptr;
}
// images_ doesn't need to be cleaned up as the swapchain does it implicitly.
if (handle) {
vkDestroySwapchainKHR(*device_, handle, nullptr);
handle = nullptr;
}
if (surface_) {
vkDestroySurfaceKHR(*instance_, surface_, nullptr);
surface_ = nullptr;
}
}
bool VulkanSwapChain::Begin() {
wait_and_signal_semaphores_.clear();
// Get the index of the next available swapchain image.
auto err =
vkAcquireNextImageKHR(*device_, handle, 0, image_available_semaphore_,
nullptr, &current_buffer_index_);
CheckResult(err, "vkAcquireNextImageKHR");
// Wait for the acquire semaphore to be signaled so that the following
// operations know they can start modifying the image.
VkSubmitInfo wait_submit_info;
wait_submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
wait_submit_info.pNext = nullptr;
VkPipelineStageFlags wait_dst_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
wait_submit_info.waitSemaphoreCount = 1;
wait_submit_info.pWaitSemaphores = &image_available_semaphore_;
wait_submit_info.pWaitDstStageMask = &wait_dst_stage;
wait_submit_info.commandBufferCount = 0;
wait_submit_info.pCommandBuffers = nullptr;
wait_submit_info.signalSemaphoreCount = 1;
wait_submit_info.pSignalSemaphores = &image_usage_semaphore_;
{
std::lock_guard<std::mutex> queue_lock(device_->primary_queue_mutex());
err =
vkQueueSubmit(device_->primary_queue(), 1, &wait_submit_info, nullptr);
}
CheckResult(err, "vkQueueSubmit");
// Reset all command buffers.
vkResetCommandBuffer(render_cmd_buffer_, 0);
vkResetCommandBuffer(copy_cmd_buffer_, 0);
auto& current_buffer = buffers_[current_buffer_index_];
// Build the command buffer that will execute all queued rendering buffers.
VkCommandBufferInheritanceInfo inherit_info;
inherit_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_INFO;
inherit_info.pNext = nullptr;
inherit_info.renderPass = render_pass_;
inherit_info.subpass = 0;
inherit_info.framebuffer = current_buffer.framebuffer;
inherit_info.occlusionQueryEnable = VK_FALSE;
inherit_info.queryFlags = 0;
inherit_info.pipelineStatistics = 0;
VkCommandBufferBeginInfo begin_info;
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
begin_info.pNext = nullptr;
begin_info.flags = VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT |
VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
begin_info.pInheritanceInfo = &inherit_info;
err = vkBeginCommandBuffer(render_cmd_buffer_, &begin_info);
CheckResult(err, "vkBeginCommandBuffer");
// Start recording the copy command buffer as well.
begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
err = vkBeginCommandBuffer(copy_cmd_buffer_, &begin_info);
CheckResult(err, "vkBeginCommandBuffer");
// First: Issue a command to clear the render target.
VkImageSubresourceRange clear_range = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
VkClearColorValue clear_color;
clear_color.float32[0] = 238 / 255.0f;
clear_color.float32[1] = 238 / 255.0f;
clear_color.float32[2] = 238 / 255.0f;
clear_color.float32[3] = 1.0f;
if (FLAGS_vulkan_random_clear_color) {
clear_color.float32[0] =
rand() / static_cast<float>(RAND_MAX); // NOLINT(runtime/threadsafe_fn)
clear_color.float32[1] = 1.0f;
clear_color.float32[2] = 0.0f;
}
vkCmdClearColorImage(copy_cmd_buffer_, current_buffer.image,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &clear_color, 1,
&clear_range);
return true;
}
bool VulkanSwapChain::End() {
auto& current_buffer = buffers_[current_buffer_index_];
auto err = vkEndCommandBuffer(render_cmd_buffer_);
CheckResult(err, "vkEndCommandBuffer");
err = vkEndCommandBuffer(copy_cmd_buffer_);
CheckResult(err, "vkEndCommandBuffer");
// Build primary command buffer.
vkResetCommandBuffer(cmd_buffer_, 0);
VkCommandBufferBeginInfo begin_info;
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
begin_info.pNext = nullptr;
begin_info.flags = 0;
begin_info.pInheritanceInfo = nullptr;
vkBeginCommandBuffer(cmd_buffer_, &begin_info);
// Transition the image to a format we can copy to.
VkImageMemoryBarrier pre_image_copy_barrier;
pre_image_copy_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
pre_image_copy_barrier.pNext = nullptr;
pre_image_copy_barrier.srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
pre_image_copy_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
pre_image_copy_barrier.oldLayout = current_buffer.image_layout;
pre_image_copy_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
pre_image_copy_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
pre_image_copy_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
pre_image_copy_barrier.image = current_buffer.image;
pre_image_copy_barrier.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0,
1};
vkCmdPipelineBarrier(cmd_buffer_, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, nullptr, 0,
nullptr, 1, &pre_image_copy_barrier);
current_buffer.image_layout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
// Execute copy commands
vkCmdExecuteCommands(cmd_buffer_, 1, &copy_cmd_buffer_);
// Transition the image to a color attachment target for drawing.
VkImageMemoryBarrier pre_image_memory_barrier;
pre_image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
pre_image_memory_barrier.pNext = nullptr;
pre_image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
pre_image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
pre_image_memory_barrier.image = current_buffer.image;
pre_image_memory_barrier.subresourceRange.aspectMask =
VK_IMAGE_ASPECT_COLOR_BIT;
pre_image_memory_barrier.subresourceRange.baseMipLevel = 0;
pre_image_memory_barrier.subresourceRange.levelCount = 1;
pre_image_memory_barrier.subresourceRange.baseArrayLayer = 0;
pre_image_memory_barrier.subresourceRange.layerCount = 1;
pre_image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
pre_image_memory_barrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
pre_image_memory_barrier.oldLayout = current_buffer.image_layout;
pre_image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
vkCmdPipelineBarrier(cmd_buffer_, VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, 0, 0, nullptr, 0,
nullptr, 1, &pre_image_memory_barrier);
current_buffer.image_layout = pre_image_memory_barrier.newLayout;
// Begin render pass.
VkRenderPassBeginInfo render_pass_begin_info;
render_pass_begin_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
render_pass_begin_info.pNext = nullptr;
render_pass_begin_info.renderPass = render_pass_;
render_pass_begin_info.framebuffer = current_buffer.framebuffer;
render_pass_begin_info.renderArea.offset.x = 0;
render_pass_begin_info.renderArea.offset.y = 0;
render_pass_begin_info.renderArea.extent.width = surface_width_;
render_pass_begin_info.renderArea.extent.height = surface_height_;
render_pass_begin_info.clearValueCount = 0;
render_pass_begin_info.pClearValues = nullptr;
vkCmdBeginRenderPass(cmd_buffer_, &render_pass_begin_info,
VK_SUBPASS_CONTENTS_SECONDARY_COMMAND_BUFFERS);
// Render commands.
vkCmdExecuteCommands(cmd_buffer_, 1, &render_cmd_buffer_);
// End render pass.
vkCmdEndRenderPass(cmd_buffer_);
// Transition the image to a format the presentation engine can source from.
// FIXME: Do we need more synchronization here between the copy buffer?
VkImageMemoryBarrier post_image_memory_barrier;
post_image_memory_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
post_image_memory_barrier.pNext = nullptr;
post_image_memory_barrier.srcAccessMask =
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
post_image_memory_barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
post_image_memory_barrier.oldLayout = current_buffer.image_layout;
post_image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
post_image_memory_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
post_image_memory_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
post_image_memory_barrier.image = current_buffer.image;
post_image_memory_barrier.subresourceRange.aspectMask =
VK_IMAGE_ASPECT_COLOR_BIT;
post_image_memory_barrier.subresourceRange.baseMipLevel = 0;
post_image_memory_barrier.subresourceRange.levelCount = 1;
post_image_memory_barrier.subresourceRange.baseArrayLayer = 0;
post_image_memory_barrier.subresourceRange.layerCount = 1;
vkCmdPipelineBarrier(cmd_buffer_, VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, nullptr, 0,
nullptr, 1, &post_image_memory_barrier);
current_buffer.image_layout = post_image_memory_barrier.newLayout;
vkEndCommandBuffer(cmd_buffer_);
VkPipelineStageFlags wait_dst_stage = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
std::vector<VkSemaphore> semaphores;
for (size_t i = 0; i < wait_and_signal_semaphores_.size(); i++) {
semaphores.push_back(wait_and_signal_semaphores_[i]);
}
semaphores.push_back(image_usage_semaphore_);
// Submit commands.
// Wait on the image usage semaphore (signaled when an image is available)
VkSubmitInfo render_submit_info;
render_submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
render_submit_info.pNext = nullptr;
render_submit_info.waitSemaphoreCount = uint32_t(semaphores.size());
render_submit_info.pWaitSemaphores = semaphores.data();
render_submit_info.pWaitDstStageMask = &wait_dst_stage;
render_submit_info.commandBufferCount = 1;
render_submit_info.pCommandBuffers = &cmd_buffer_;
render_submit_info.signalSemaphoreCount = uint32_t(semaphores.size()) - 1;
render_submit_info.pSignalSemaphores = semaphores.data();
{
std::lock_guard<std::mutex> queue_lock(device_->primary_queue_mutex());
err = vkQueueSubmit(device_->primary_queue(), 1, &render_submit_info,
nullptr);
}
CheckResult(err, "vkQueueSubmit");
// Queue the present of our current image.
const VkSwapchainKHR swap_chains[] = {handle};
const uint32_t swap_chain_image_indices[] = {current_buffer_index_};
VkPresentInfoKHR present_info;
present_info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
present_info.pNext = nullptr;
present_info.waitSemaphoreCount = 0;
present_info.pWaitSemaphores = nullptr;
present_info.swapchainCount = static_cast<uint32_t>(xe::countof(swap_chains));
present_info.pSwapchains = swap_chains;
present_info.pImageIndices = swap_chain_image_indices;
present_info.pResults = nullptr;
{
std::lock_guard<std::mutex> queue_lock(device_->primary_queue_mutex());
err = vkQueuePresentKHR(device_->primary_queue(), &present_info);
}
switch (err) {
case VK_SUCCESS:
break;
case VK_SUBOPTIMAL_KHR:
// We are not rendering at the right size - but the presentation engine
// will scale the output for us.
break;
case VK_ERROR_OUT_OF_DATE_KHR:
// Lost presentation ability; need to recreate the swapchain.
// TODO(benvanik): recreate swapchain.
assert_always("Swapchain recreation not implemented");
break;
default:
XELOGE("Failed to queue present: %s", to_string(err));
assert_always("Unexpected queue present failure");
return false;
}
return true;
}
} // namespace vulkan
} // namespace ui
} // namespace xe
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