void initVulkan()
{
VulkanAndroidExampleBase::initVulkan();
loadTexture(
"textures/android_robot.ktx",
VK_FORMAT_R8G8B8A8_UNORM,
&texture,
false);
createCommandBuffers();
// Compute stuff
getComputeQueue();
createComputeCommandBuffer();
prepareStorageBuffers();
prepareUniformBuffers();
setupDescriptorSetLayout();
preparePipelines();
setupDescriptorPool();
setupDescriptorSet();
prepareCompute();
buildCommandBuffers();
buildComputeCommandBuffer();
state.zoom = -5.0f;
state.rotation = glm::vec3();
prepared = true;
}
void op3d::Engine::initVulkan()
{
instance.create();
callback.setup(instance);
surface.create(instance, window);
physicalDevice.create(instance, surface);
device.create(physicalDevice, surface, graphicsQueue, presentQueue);
swapChain.create(device, surface, physicalDevice, window);
swapChain.createImageViews(device, swapChainImageViews);
createRenderPass();
createDescriptorSetLayout();
createGraphicsPipeline();
commandBufferManager.createCommandPool(physicalDevice, surface);
createDepthResources();
createFramebuffers();
createTextureImage();
createTextureImageView();
createTextureSampler();
createVertexBuffer();
createIndexBuffer();
createUniformBuffer();
descriptorPool.createPool();
descriptorSet.createSet(uniformBuffer, textureImageView, textureSampler, descriptorSetLayout, descriptorPool, device);
createCommandBuffers();
createSemaphores();
}
void reBuildCommandBuffers()
{
if (!checkCommandBuffers())
{
destroyCommandBuffers();
createCommandBuffers();
}
buildCommandBuffers();
}
void op3d::Engine::recreateSwapChain()
{
vkDeviceWaitIdle(device);
swapChain.create(device, surface, physicalDevice, window);
swapChain.createImageViews(device, swapChainImageViews);
createRenderPass();
createGraphicsPipeline();
createDepthResources();
createFramebuffers();
createCommandBuffers();
}
void VulkanBase::prepare() {
if (enableValidation)
vkDebug::setupDebugging(instance, VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT, NULL);
createCommandPool();
createSetupCommandBuffer();
setupSwapChain();
createCommandBuffers();
setupDepthStencil();
setupRenderPass();
createPipelineCache();
setupFrameBuffer();
flushSetupCommandBuffer();
// Recreate setup command buffer for derived class
createSetupCommandBuffer();
// Create a simple texture loader class
textureLoader = new vkTools::VulkanTextureLoader(physicalDevice, device, queue, cmdPool);
}
void VulkanExampleBase::windowResize()
{
if (!prepared)
{
return;
}
prepared = false;
// Recreate swap chain
width = destWidth;
height = destHeight;
createSetupCommandBuffer();
setupSwapChain();
// Recreate the frame buffers
vkDestroyImageView(device, depthStencil.view, nullptr);
vkDestroyImage(device, depthStencil.image, nullptr);
vkFreeMemory(device, depthStencil.mem, nullptr);
setupDepthStencil();
for (uint32_t i = 0; i < frameBuffers.size(); i++)
{
vkDestroyFramebuffer(device, frameBuffers[i], nullptr);
}
setupFrameBuffer();
flushSetupCommandBuffer();
// Command buffers need to be recreated as they may store
// references to the recreated frame buffer
destroyCommandBuffers();
createCommandBuffers();
buildCommandBuffers();
vkQueueWaitIdle(queue);
vkDeviceWaitIdle(device);
// Notify derived class
windowResized();
viewChanged();
prepared = true;
}
void buildCommandBuffers()
{
// Destroy command buffers if already present
if (!checkCommandBuffers())
{
destroyCommandBuffers();
createCommandBuffers();
}
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = defaultClearColor;
clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.offset.x = 0;
renderPassBeginInfo.renderArea.offset.y = 0;
renderPassBeginInfo.renderArea.extent.width = width;
renderPassBeginInfo.renderArea.extent.height = height;
renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues;
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
{
// Set target frame buffer
renderPassBeginInfo.framebuffer = frameBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
// Compute particle movement
// Add memory barrier to ensure that the (rendering) vertex shader operations have finished
// Required as the compute shader will overwrite the vertex buffer data
VkBufferMemoryBarrier bufferBarrier = vkTools::initializers::bufferMemoryBarrier();
// Vertex shader invocations have finished reading from the buffer
bufferBarrier.srcAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
// Compute shader buffer read and write
bufferBarrier.dstAccessMask = VK_ACCESS_SHADER_WRITE_BIT | VK_ACCESS_SHADER_READ_BIT;
bufferBarrier.buffer = computeStorageBuffer.buffer;
bufferBarrier.size = computeStorageBuffer.descriptor.range;
bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
vkCmdPipelineBarrier(
drawCmdBuffers[i],
VK_PIPELINE_STAGE_VERTEX_SHADER_BIT,
VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
VK_FLAGS_NONE,
0, nullptr,
1, &bufferBarrier,
0, nullptr);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_COMPUTE, pipelines.compute);
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_COMPUTE, computePipelineLayout, 0, 1, &computeDescriptorSet, 0, 0);
// Dispatch the compute job
vkCmdDispatch(drawCmdBuffers[i], PARTICLE_COUNT / 16, 1, 1);
// Add memory barrier to ensure that compute shader has finished writing to the buffer
// Without this the (rendering) vertex shader may display incomplete results (partial data from last frame)
// Compute shader has finished writes to the buffer
bufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT;
// Vertex shader access (attribute binding)
bufferBarrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
bufferBarrier.buffer = computeStorageBuffer.buffer;
bufferBarrier.size = computeStorageBuffer.descriptor.range;
bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
vkCmdPipelineBarrier(
drawCmdBuffers[i],
VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
VK_PIPELINE_STAGE_VERTEX_SHADER_BIT,
VK_FLAGS_NONE,
0, nullptr,
1, &bufferBarrier,
0, nullptr);
// Draw the particle system using the update vertex buffer
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vkTools::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
VkRect2D scissor = vkTools::initializers::rect2D(width, height, 0, 0);
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.postCompute);
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSetPostCompute, 0, NULL);
VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &computeStorageBuffer.buffer, offsets);
vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0);
vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
}
}
void buildCommandBuffers()
{
// Destroy command buffers if already present
if (!checkCommandBuffers())
{
destroyCommandBuffers();
createCommandBuffers();
}
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = defaultClearColor;
clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.offset.x = 0;
renderPassBeginInfo.renderArea.offset.y = 0;
renderPassBeginInfo.renderArea.extent.width = width;
renderPassBeginInfo.renderArea.extent.height = height;
renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues;
VkResult err;
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
{
// Set target frame buffer
renderPassBeginInfo.framebuffer = frameBuffers[i];
err = vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo);
assert(!err);
// Buffer memory barrier to make sure that compute shader
// writes are finished before using the storage buffer
// in the vertex shader
VkBufferMemoryBarrier bufferBarrier = vkTools::initializers::bufferMemoryBarrier();
// Source access : Compute shader buffer write
bufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT;
// Dest access : Vertex shader access (attribute binding)
bufferBarrier.dstAccessMask = VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT;
bufferBarrier.buffer = computeStorageBuffer.buffer;
bufferBarrier.offset = 0;
bufferBarrier.size = computeStorageBuffer.descriptor.range;
bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
vkCmdPipelineBarrier(
drawCmdBuffers[i],
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
VK_FLAGS_NONE,
0, nullptr,
1, &bufferBarrier,
0, nullptr);
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
VkViewport viewport = vkTools::initializers::viewport(
(float)width,
(float)height,
0.0f,
1.0f
);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
VkRect2D scissor = vkTools::initializers::rect2D(
width,
height,
0,
0
);
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSetPostCompute, 0, NULL);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.postCompute);
VkDeviceSize offsets[1] = { 0 };
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &computeStorageBuffer.buffer, offsets);
vkCmdDraw(drawCmdBuffers[i], PARTICLE_COUNT, 1, 0, 0);
vkCmdEndRenderPass(drawCmdBuffers[i]);
err = vkEndCommandBuffer(drawCmdBuffers[i]);
assert(!err);
}
}
void VulkanBase::createInstance() {
// Application info init
const VkApplicationInfo applicationInfo = {
.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
.pNext = NULL,
.pApplicationName = name.c_str(),
.applicationVersion = 1,
.pEngineName = engineName.c_str(),
.engineVersion = 1,
.apiVersion = VK_API_VERSION, //FIXME Nvidia driver not updated to latest Vulkan Version
};
VkInstanceCreateInfo instanceCreateInfo = {
.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
.pNext = NULL,
.flags = VK_FLAGS_NONE,
.pApplicationInfo = &applicationInfo,
.enabledLayerCount = 0,
.ppEnabledLayerNames = NULL,
.enabledExtensionCount = 0,
.ppEnabledExtensionNames = NULL,
};
std::vector<const char*> enabledExtensions = { VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_XCB_SURFACE_EXTENSION_NAME};
//Check if extensions are present
vkUtils::checkGlobalExtensionPresent(VK_KHR_SURFACE_EXTENSION_NAME);
vkUtils::checkGlobalExtensionPresent(VK_KHR_XCB_SURFACE_EXTENSION_NAME);
#ifdef _DEBUG
if (enableValidation) {
//Extensions management
enabledExtensions.push_back(VK_EXT_DEBUG_REPORT_EXTENSION_NAME);
vkUtils::checkGlobalExtensionPresent(VK_EXT_DEBUG_REPORT_EXTENSION_NAME);
// Layer management
instanceCreateInfo.enabledLayerCount = vkDebug::validationLayerCount;
instanceCreateInfo.ppEnabledLayerNames = vkDebug::validationLayerNames;
// Check standard debug layers are present
for(uint32_t i = 0; i < instanceCreateInfo.enabledLayerCount; i++) {
vkUtils::checkGlobalLayerPresent(vkDebug::validationLayerNames[i]);
}
}
#endif // DEBUG
instanceCreateInfo.ppEnabledExtensionNames = enabledExtensions.data();
instanceCreateInfo.enabledExtensionCount = (uint32_t) enabledExtensions.size();
CHECK_RESULT(vkCreateInstance(&instanceCreateInfo, nullptr, &instance));
}
void VulkanBase::selectVkPhysicalDevice() {
uint32_t physicalDeviceCount = 0;
CHECK_RESULT(vkEnumeratePhysicalDevices(instance,&physicalDeviceCount,nullptr));
if (physicalDeviceCount<=0) {
ERROR("No physical device found");
}
std::vector<VkPhysicalDevice> physicalDevicesVector(physicalDeviceCount);
CHECK_RESULT(vkEnumeratePhysicalDevices(instance,&physicalDeviceCount,physicalDevicesVector.data()));
#ifdef _DEBUG
int deviceIndex = 0;
for(const auto & phyDev : physicalDevicesVector) {
VkPhysicalDeviceProperties phyDevProperties;
vkGetPhysicalDeviceProperties(phyDev, &phyDevProperties);
std::cout << "--- Physical device: " << phyDevProperties.deviceName << " (index: " << (deviceIndex++) << ")" << std::endl;
std::cout << " apiVersion: " << phyDevProperties.apiVersion << std::endl;
std::cout << " driverVersion: " << phyDevProperties.driverVersion << std::endl;
std::cout << " vendorID: " << phyDevProperties.vendorID << std::endl;
std::cout << " deviceID: " << phyDevProperties.deviceID << std::endl;
std::cout << " deviceType: ";
switch(phyDevProperties.deviceType) {
case VK_PHYSICAL_DEVICE_TYPE_OTHER:
std::cout << "OTHER";
break;
case VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU:
std::cout << "INTEGRATED_GPU";
break;
case VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU:
std::cout << "DISCRETE_GPU";
break;
case VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU:
std::cout << "VIRTUAL_GPU";
break;
case VK_PHYSICAL_DEVICE_TYPE_CPU:
std::cout << "CPU";
break;
default:
std::cout << "UNKNOWN!!!";
break;
}
std::cout << std::endl;
}
#endif // _DEBUG
physicalDevice = physicalDevicesVector.at(0);
// Gather Physical Device Memory Properties
vkGetPhysicalDeviceMemoryProperties(physicalDevice,&physicalDeviceMemoryProperties);
}
void VulkanBase::selectQueue() {
uint32_t queueFamilyPropertyCount = 0;
vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice,&queueFamilyPropertyCount,nullptr);
if (queueFamilyPropertyCount<=0)
ERROR("Physical device has no queue families");
std::vector<VkQueueFamilyProperties> queueFamilyPropertiesVector(queueFamilyPropertyCount);
vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice,&queueFamilyPropertyCount,queueFamilyPropertiesVector.data());
uint32_t queueFamilyIndex = 0;
int32_t selectedQueueFamilyIndex = -1;
VkBool32 presentSupport = VK_FALSE;
#ifdef _DEBUG
std::cout << std::endl << "--- Number of queue families " << queueFamilyPropertyCount << std::endl;
#endif // _DEBUG
for(const auto & queueFamProp : queueFamilyPropertiesVector) {
CHECK_RESULT(vkGetPhysicalDeviceSurfaceSupportKHR(physicalDevice, queueFamilyIndex, swapchain.surface, &presentSupport));
#ifdef _DEBUG
std::cout << "--- Properties for queue family " << queueFamilyIndex << std::endl;
std::cout << " queueFlags:";
if(queueFamProp.queueFlags & VK_QUEUE_GRAPHICS_BIT)
std::cout << " G";
if(queueFamProp.queueFlags & VK_QUEUE_COMPUTE_BIT)
std::cout << " C";
if(queueFamProp.queueFlags & VK_QUEUE_TRANSFER_BIT)
std::cout << " T";
if(queueFamProp.queueFlags & VK_QUEUE_SPARSE_BINDING_BIT)
std::cout << " S";
std::cout << '\n';
std::cout << " queueCount: " << queueFamProp.queueCount << std::endl;
std::cout << " timestampValidBits: " << queueFamProp.timestampValidBits << std::endl;
std::cout << " minImageTransferGranularity: " << queueFamProp.minImageTransferGranularity.width
<< ", " << queueFamProp.minImageTransferGranularity.height
<< ", " << queueFamProp.minImageTransferGranularity.depth
<< std::endl;
std::cout << " Supports present?: " << std::boolalpha << bool(presentSupport) << std::endl << std::endl;
#endif // _DEBUG
if (bool(queueFamProp.queueFlags & VK_QUEUE_GRAPHICS_BIT) && presentSupport == VK_TRUE) {
if (selectedQueueFamilyIndex < 0)
selectedQueueFamilyIndex = queueFamilyIndex;
}
queueFamilyIndex++;
}
if (selectedQueueFamilyIndex<0)
ERROR("No queue with both graphics and present capabilities found");
// Create device after selecting the queue
std::array<float,1> queuePriorities = {0.0f};
VkDeviceQueueCreateInfo queueCreateInfo = {
.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
.pNext = nullptr,
.flags = VK_FLAGS_NONE,
.queueFamilyIndex = (uint32_t) selectedQueueFamilyIndex,
.queueCount = 1, //Number of queues to create
.pQueuePriorities = queuePriorities.data()
};
// Call to createDevice
createDevice(queueCreateInfo,1);
//Get a handle to the selected queue
vkGetDeviceQueue(device, (uint32_t) selectedQueueFamilyIndex, 0, &queue); //TODO get handle if using multiple queues
queueFamilyIndex = (uint32_t) selectedQueueFamilyIndex;
}
void VulkanBase::createDevice(VkDeviceQueueCreateInfo requestedQueues, uint32_t requestedQueuesCount) {
//Check extensions available on the selected physical device before creating it
// Check swap chain extension
vkUtils::checkDeviceExtensionPresent(physicalDevice,VK_KHR_SWAPCHAIN_EXTENSION_NAME);
std::vector<const char*> enabledExtensions = {VK_KHR_SWAPCHAIN_EXTENSION_NAME};
VkDeviceCreateInfo deviceCreateInfo = {
.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
.pNext = nullptr,
.flags = VK_FLAGS_NONE,
.queueCreateInfoCount = requestedQueuesCount,
.pQueueCreateInfos = &requestedQueues,
.enabledLayerCount = 0,
.ppEnabledLayerNames = nullptr,
.enabledExtensionCount = (uint32_t) enabledExtensions.size(),
.ppEnabledExtensionNames = enabledExtensions.data(),
.pEnabledFeatures = NULL
};
#ifdef _DEBUG
if (enableValidation) {
deviceCreateInfo.enabledLayerCount = vkDebug::validationLayerCount;
deviceCreateInfo.ppEnabledLayerNames = vkDebug::validationLayerNames;
// Check standard debug layers are present on the device
for(uint32_t i = 0; i < deviceCreateInfo.enabledLayerCount; i++) {
vkUtils::checkGlobalLayerPresent(vkDebug::validationLayerNames[i]);
}
}
#endif // _DEBUG
CHECK_RESULT(vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &device));
}
void VulkanBase::createCommandPool(const uint32_t queueFamilyIndex, const VkCommandPoolCreateFlagBits createFlagBits) {
const VkCommandPoolCreateInfo commandPoolCreateInfo= {
.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
.pNext = NULL,
.flags = createFlagBits,
.queueFamilyIndex = queueFamilyIndex
};
CHECK_RESULT(vkCreateCommandPool(device, &commandPoolCreateInfo,nullptr,&commandPool));
#ifdef _DEBUG
std::cout << "\n+++ Created command pool" << std::endl;
#endif // _DEBUG
}
void VulkanBase::createSynchroItems()
{
// Semaphores
VkSemaphoreCreateInfo semaphoreCreateInfo = {
.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO,
.pNext = NULL,
.flags = VK_FLAGS_NONE
};
// Semaphore signaled on swapchain image ready to use and wait on the queue before rendering/present
CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &imageAcquiredSemaphore));
// Semaphore signaled on queue rendering termination and waited on present operation
CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &renderingCompletedSemaphore));
// Fences
VkFenceCreateInfo fenceCreateInfo = {
.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO,
.pNext = NULL,
.flags = VK_FLAGS_NONE
};
CHECK_RESULT(vkCreateFence(device, &fenceCreateInfo, nullptr, &presentFence));
#ifdef _DEBUG
std::cout << "\n+++ Created semaphores and fences\n";
#endif // _DEBUG
}
void VulkanBase::createCommandBuffers(VkCommandBuffer* cmdBuffer, uint32_t commandBufferCount, VkCommandBufferLevel cmdBufferLevel)
{
const VkCommandBufferAllocateInfo commandBufferAllocateInfo = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
.pNext = NULL,
.commandPool = commandPool,
.level = cmdBufferLevel,
.commandBufferCount = commandBufferCount
};
CHECK_RESULT(vkAllocateCommandBuffers(device, &commandBufferAllocateInfo, cmdBuffer));
#ifdef _DEBUG
std::cout << "\n+++ Allocated " << commandBufferCount << " command buffers" << std::endl;
#endif // _DEBUG
}
void VulkanBase::setupInitCommandBuffer()
{
VkCommandBufferBeginInfo commandBufferBeginInfo = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
.pNext = NULL,
.flags = VK_FLAGS_NONE,
.pInheritanceInfo = NULL
};
CHECK_RESULT(vkBeginCommandBuffer(initCommandBuffer, &commandBufferBeginInfo));
// Creates an image memory barrier to change the layout for every image on the swapchain
VkImageMemoryBarrier imageMemoryBarrier = {
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = NULL,
.srcAccessMask = VK_FLAGS_NONE,
.dstAccessMask = VK_FLAGS_NONE,
.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED,
.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.image = 0,
.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}
};
// Pipeline Barrier for each swapchain image
for (const auto& image: swapchain.swapchainImagesVector){
imageMemoryBarrier.image = image;
vkCmdPipelineBarrier(initCommandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, //Put barrier on top of the pipeline
VK_FLAGS_NONE,
0, nullptr, // memoryBarrier
0, nullptr, // bufferMemoryBarrier
1, &imageMemoryBarrier); // imageMemoryBarrier
}
CHECK_RESULT(vkEndCommandBuffer(initCommandBuffer));
#ifdef _DEBUG
std::cout << "\n+++ Finished recording initCommandBuffer\n";
#endif // _DEBUG
}
void VulkanBase::setupPresentCommandBuffer(const VkImage currentSwapchainImage, const float* clearColors)
{
VkCommandBufferBeginInfo commandBufferBeginInfo = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
.pNext = NULL,
.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
.pInheritanceInfo = NULL
};
CHECK_RESULT(vkBeginCommandBuffer(presentCommandBuffer, &commandBufferBeginInfo));
VkImageMemoryBarrier imageMemoryBarrier = {
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = NULL,
.srcAccessMask = VK_ACCESS_MEMORY_READ_BIT,
.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
.image = currentSwapchainImage,
.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}
};
//Set barrier on top to change layout and access
vkCmdPipelineBarrier(presentCommandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
VK_FLAGS_NONE, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
VkClearColorValue clearColorValue;
VkImageSubresourceRange imageSubresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
clearColorValue.float32[0] = clearColors[0];
clearColorValue.float32[1] = clearColors[1];
clearColorValue.float32[2] = clearColors[2];
clearColorValue.float32[3] = 1.0f;
// Command to clear the swapchain image
vkCmdClearColorImage(presentCommandBuffer,currentSwapchainImage,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &clearColorValue, 1, &imageSubresourceRange);
/*
* Transition the swapchain image from VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
* to VK_IMAGE_LAYOUT_PRESENT_SRC_KHR
*/
imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
imageMemoryBarrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_TRANSFER_WRITE_BIT;
imageMemoryBarrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
// Set barrier end of pipeline
vkCmdPipelineBarrier(presentCommandBuffer,
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier
);
CHECK_RESULT(vkEndCommandBuffer(presentCommandBuffer));
#ifdef _DEBUG
//std::cout << "\n+++ Finished recording presentCommandBuffer\n";
#endif // _DEBUG
}
void VulkanBase::renderFrame(const float* clearColors)
{
// Wait on previous frame fence (render too fast)
//CHECK_RESULT(vkWaitForFences(device, 1, &presentFence, VK_TRUE, UINT64_MAX));
//CHECK_RESULT(vkResetFences(device, 1, &presentFence));
// Acquire next image on the swapchain
uint32_t imageIndex = UINT64_MAX;
CHECK_RESULT(vkAcquireNextImageKHR(device, swapchain.swapchain, UINT64_MAX, imageAcquiredSemaphore, VK_NULL_HANDLE, &imageIndex));
// Setup the present command buffer
setupPresentCommandBuffer(swapchain.swapchainImagesVector.at(imageIndex),clearColors);
// Submit present command buffer to the queue
// Waits on imageAcquiredSemaphore so it doesnt start rendering until the image from the swapchain is ready and
// it also signals the renderingCompletedSemaphore used by the later present
VkPipelineStageFlags pipelineStageFlags = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
VkSubmitInfo submitInfo = {
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = NULL,
.waitSemaphoreCount = 1,
.pWaitSemaphores = &imageAcquiredSemaphore,
.pWaitDstStageMask = &pipelineStageFlags,
.commandBufferCount = 1,
.pCommandBuffers = &presentCommandBuffer,
.signalSemaphoreCount = 1,
.pSignalSemaphores = &renderingCompletedSemaphore
};
CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
// Present the rendered image
VkPresentInfoKHR presentInfo = {
.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR,
.pNext = NULL,
.waitSemaphoreCount = 1,
.pWaitSemaphores = &renderingCompletedSemaphore,
.swapchainCount = 1,
.pSwapchains = &swapchain.swapchain,
.pImageIndices = &imageIndex,
.pResults = nullptr
};
CHECK_RESULT(vkQueuePresentKHR(queue,&presentInfo));
CHECK_RESULT(vkQueueWaitIdle(queue)); //TODO Not sure this is the correct way...
}
void VulkanBase::prepare()
{
//Allocate command Buffers
createCommandBuffers(&initCommandBuffer, 1, VK_COMMAND_BUFFER_LEVEL_PRIMARY);
createCommandBuffers(&presentCommandBuffer, 1, VK_COMMAND_BUFFER_LEVEL_PRIMARY);
commandBuffersVector.push_back(initCommandBuffer);
commandBuffersVector.push_back(presentCommandBuffer);
//Initialize command Buffers
setupInitCommandBuffer();
// Submit initialization command buffer to the queue
VkSubmitInfo submitInfo = {
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = nullptr,
.waitSemaphoreCount = 0,
.pWaitSemaphores = nullptr,
.pWaitDstStageMask = VK_FLAGS_NONE,
.commandBufferCount = 1,
.pCommandBuffers = &initCommandBuffer,
.signalSemaphoreCount = 0,
.pSignalSemaphores = nullptr
};
CHECK_RESULT(vkQueueSubmit(queue,1,&submitInfo, VK_NULL_HANDLE));
CHECK_RESULT(vkQueueWaitIdle(queue));
vkFreeCommandBuffers(device, commandPool, 1, &initCommandBuffer);
#ifdef _DEBUG
std::cout << "\n+++ initCommandBuffer work complete!\n";
std::cout << "\n******* Rendering Start ******\n";
#endif // _DEBUG
}
