| /* |
| * Copyright (C) 2016 Google, Inc. |
| * |
| * 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 <array> |
| |
| #include <glm/gtc/type_ptr.hpp> |
| #include <glm/gtc/matrix_transform.hpp> |
| |
| #include "Helpers.h" |
| #include "Smoke.h" |
| #include "Meshes.h" |
| #include "Shell.h" |
| |
| namespace { |
| |
| // TODO do not rely on compiler to use std140 layout |
| // TODO move lower frequency data to another descriptor set |
| struct ShaderParamBlock { |
| float light_pos[4]; |
| float light_color[4]; |
| float model[4 * 4]; |
| float view_projection[4 * 4]; |
| }; |
| |
| } // namespace |
| |
| Smoke::Smoke(const std::vector<std::string> &args) |
| : Game("Smoke", args), |
| multithread_(true), |
| use_push_constants_(false), |
| sim_paused_(false), |
| sim_(5000), |
| camera_(2.5f), |
| frame_data_(), |
| render_pass_clear_value_({{{0.0f, 0.1f, 0.2f, 1.0f}}}), |
| render_pass_begin_info_(), |
| primary_cmd_begin_info_(), |
| primary_cmd_submit_info_() { |
| for (auto it = args.begin(); it != args.end(); ++it) { |
| if (*it == "-s") |
| multithread_ = false; |
| else if (*it == "-p") |
| use_push_constants_ = true; |
| } |
| |
| init_workers(); |
| } |
| |
| Smoke::~Smoke() {} |
| |
| void Smoke::init_workers() { |
| int worker_count = std::thread::hardware_concurrency(); |
| |
| // not enough cores |
| if (!multithread_ || worker_count < 2) { |
| multithread_ = false; |
| worker_count = 1; |
| } |
| |
| const int object_per_worker = static_cast<int>(sim_.objects().size()) / worker_count; |
| int object_begin = 0, object_end = 0; |
| |
| workers_.reserve(worker_count); |
| for (int i = 0; i < worker_count; i++) { |
| object_begin = object_end; |
| if (i < worker_count - 1) |
| object_end += object_per_worker; |
| else |
| object_end = static_cast<int>(sim_.objects().size()); |
| |
| Worker *worker = new Worker(*this, i, object_begin, object_end); |
| workers_.emplace_back(std::unique_ptr<Worker>(worker)); |
| } |
| } |
| |
| void Smoke::attach_shell(Shell &sh) { |
| Game::attach_shell(sh); |
| |
| const Shell::Context &ctx = sh.context(); |
| physical_dev_ = ctx.physical_dev; |
| dev_ = ctx.dev; |
| queue_ = ctx.game_queue; |
| queue_family_ = ctx.game_queue_family; |
| format_ = ctx.format.format; |
| |
| vk::GetPhysicalDeviceProperties(physical_dev_, &physical_dev_props_); |
| |
| if (use_push_constants_ && sizeof(ShaderParamBlock) > physical_dev_props_.limits.maxPushConstantsSize) { |
| shell_->log(Shell::LOG_WARN, "cannot enable push constants"); |
| use_push_constants_ = false; |
| } |
| |
| VkPhysicalDeviceMemoryProperties mem_props; |
| vk::GetPhysicalDeviceMemoryProperties(physical_dev_, &mem_props); |
| mem_flags_.reserve(mem_props.memoryTypeCount); |
| for (uint32_t i = 0; i < mem_props.memoryTypeCount; i++) mem_flags_.push_back(mem_props.memoryTypes[i].propertyFlags); |
| |
| meshes_ = new Meshes(dev_, mem_flags_); |
| |
| create_render_pass(); |
| create_shader_modules(); |
| create_descriptor_set_layout(); |
| create_pipeline_layout(); |
| create_pipeline(); |
| |
| create_frame_data(2); |
| |
| render_pass_begin_info_.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; |
| render_pass_begin_info_.renderPass = render_pass_; |
| render_pass_begin_info_.clearValueCount = 1; |
| render_pass_begin_info_.pClearValues = &render_pass_clear_value_; |
| |
| primary_cmd_begin_info_.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; |
| primary_cmd_begin_info_.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; |
| |
| // we will render to the swapchain images |
| primary_cmd_submit_wait_stages_ = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; |
| |
| primary_cmd_submit_info_.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; |
| primary_cmd_submit_info_.waitSemaphoreCount = 1; |
| primary_cmd_submit_info_.pWaitDstStageMask = &primary_cmd_submit_wait_stages_; |
| primary_cmd_submit_info_.commandBufferCount = 1; |
| primary_cmd_submit_info_.signalSemaphoreCount = 1; |
| |
| if (multithread_) { |
| for (auto &worker : workers_) worker->start(); |
| } |
| } |
| |
| void Smoke::detach_shell() { |
| if (multithread_) { |
| for (auto &worker : workers_) worker->stop(); |
| } |
| |
| destroy_frame_data(); |
| |
| vk::DestroyPipeline(dev_, pipeline_, nullptr); |
| vk::DestroyPipelineLayout(dev_, pipeline_layout_, nullptr); |
| if (!use_push_constants_) vk::DestroyDescriptorSetLayout(dev_, desc_set_layout_, nullptr); |
| vk::DestroyShaderModule(dev_, fs_, nullptr); |
| vk::DestroyShaderModule(dev_, vs_, nullptr); |
| vk::DestroyRenderPass(dev_, render_pass_, nullptr); |
| |
| delete meshes_; |
| |
| Game::detach_shell(); |
| } |
| |
| void Smoke::create_render_pass() { |
| VkAttachmentDescription attachment = {}; |
| attachment.format = format_; |
| attachment.samples = VK_SAMPLE_COUNT_1_BIT; |
| attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; |
| attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE; |
| attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; |
| attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; |
| |
| VkAttachmentReference attachment_ref = {}; |
| attachment_ref.attachment = 0; |
| attachment_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; |
| |
| VkSubpassDescription subpass = {}; |
| subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; |
| subpass.colorAttachmentCount = 1; |
| subpass.pColorAttachments = &attachment_ref; |
| |
| std::array<VkSubpassDependency, 2> subpass_deps; |
| subpass_deps[0].srcSubpass = VK_SUBPASS_EXTERNAL; |
| subpass_deps[0].dstSubpass = 0; |
| subpass_deps[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; |
| subpass_deps[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; |
| subpass_deps[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; |
| subpass_deps[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; |
| subpass_deps[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; |
| |
| subpass_deps[1].srcSubpass = 0; |
| subpass_deps[1].dstSubpass = VK_SUBPASS_EXTERNAL; |
| subpass_deps[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; |
| subpass_deps[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; |
| subpass_deps[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; |
| subpass_deps[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; |
| subpass_deps[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; |
| |
| VkRenderPassCreateInfo render_pass_info = {}; |
| render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; |
| render_pass_info.attachmentCount = 1; |
| render_pass_info.pAttachments = &attachment; |
| render_pass_info.subpassCount = 1; |
| render_pass_info.pSubpasses = &subpass; |
| render_pass_info.dependencyCount = (uint32_t)subpass_deps.size(); |
| render_pass_info.pDependencies = subpass_deps.data(); |
| |
| vk::assert_success(vk::CreateRenderPass(dev_, &render_pass_info, nullptr, &render_pass_)); |
| } |
| |
| void Smoke::create_shader_modules() { |
| VkShaderModuleCreateInfo sh_info = {}; |
| sh_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO; |
| if (use_push_constants_) { |
| #include "Smoke.push_constant.vert.h" |
| sh_info.codeSize = sizeof(Smoke_push_constant_vert); |
| sh_info.pCode = Smoke_push_constant_vert; |
| } else { |
| #include "Smoke.vert.h" |
| sh_info.codeSize = sizeof(Smoke_vert); |
| sh_info.pCode = Smoke_vert; |
| } |
| vk::assert_success(vk::CreateShaderModule(dev_, &sh_info, nullptr, &vs_)); |
| |
| #include "Smoke.frag.h" |
| sh_info.codeSize = sizeof(Smoke_frag); |
| sh_info.pCode = Smoke_frag; |
| vk::assert_success(vk::CreateShaderModule(dev_, &sh_info, nullptr, &fs_)); |
| } |
| |
| void Smoke::create_descriptor_set_layout() { |
| if (use_push_constants_) return; |
| |
| VkDescriptorSetLayoutBinding layout_binding = {}; |
| layout_binding.binding = 0; |
| layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC; |
| layout_binding.descriptorCount = 1; |
| layout_binding.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; |
| |
| VkDescriptorSetLayoutCreateInfo layout_info = {}; |
| layout_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO; |
| layout_info.bindingCount = 1; |
| layout_info.pBindings = &layout_binding; |
| |
| vk::assert_success(vk::CreateDescriptorSetLayout(dev_, &layout_info, nullptr, &desc_set_layout_)); |
| } |
| |
| void Smoke::create_pipeline_layout() { |
| VkPushConstantRange push_const_range = {}; |
| |
| VkPipelineLayoutCreateInfo pipeline_layout_info = {}; |
| pipeline_layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO; |
| |
| if (use_push_constants_) { |
| push_const_range.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; |
| push_const_range.offset = 0; |
| push_const_range.size = sizeof(ShaderParamBlock); |
| |
| pipeline_layout_info.pushConstantRangeCount = 1; |
| pipeline_layout_info.pPushConstantRanges = &push_const_range; |
| } else { |
| pipeline_layout_info.setLayoutCount = 1; |
| pipeline_layout_info.pSetLayouts = &desc_set_layout_; |
| } |
| |
| vk::assert_success(vk::CreatePipelineLayout(dev_, &pipeline_layout_info, nullptr, &pipeline_layout_)); |
| } |
| |
| void Smoke::create_pipeline() { |
| VkPipelineShaderStageCreateInfo stage_info[2] = {}; |
| stage_info[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; |
| stage_info[0].stage = VK_SHADER_STAGE_VERTEX_BIT; |
| stage_info[0].module = vs_; |
| stage_info[0].pName = "main"; |
| stage_info[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; |
| stage_info[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT; |
| stage_info[1].module = fs_; |
| stage_info[1].pName = "main"; |
| |
| VkPipelineViewportStateCreateInfo viewport_info = {}; |
| viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO; |
| // both dynamic |
| viewport_info.viewportCount = 1; |
| viewport_info.scissorCount = 1; |
| |
| VkPipelineRasterizationStateCreateInfo rast_info = {}; |
| rast_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO; |
| rast_info.depthClampEnable = false; |
| rast_info.rasterizerDiscardEnable = false; |
| rast_info.polygonMode = VK_POLYGON_MODE_FILL; |
| rast_info.cullMode = VK_CULL_MODE_NONE; |
| rast_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; |
| rast_info.depthBiasEnable = false; |
| rast_info.lineWidth = 1.0f; |
| |
| VkPipelineMultisampleStateCreateInfo multisample_info = {}; |
| multisample_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO; |
| multisample_info.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; |
| multisample_info.sampleShadingEnable = false; |
| multisample_info.pSampleMask = nullptr; |
| multisample_info.alphaToCoverageEnable = false; |
| multisample_info.alphaToOneEnable = false; |
| |
| VkPipelineColorBlendAttachmentState blend_attachment = {}; |
| blend_attachment.blendEnable = true; |
| blend_attachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA; |
| blend_attachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA; |
| blend_attachment.colorBlendOp = VK_BLEND_OP_ADD; |
| blend_attachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE; |
| blend_attachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; |
| blend_attachment.alphaBlendOp = VK_BLEND_OP_ADD; |
| blend_attachment.colorWriteMask = |
| VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; |
| |
| VkPipelineColorBlendStateCreateInfo blend_info = {}; |
| blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO; |
| blend_info.logicOpEnable = false; |
| blend_info.attachmentCount = 1; |
| blend_info.pAttachments = &blend_attachment; |
| |
| std::array<VkDynamicState, 2> dynamic_states = {{VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR}}; |
| struct VkPipelineDynamicStateCreateInfo dynamic_info = {}; |
| dynamic_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; |
| dynamic_info.dynamicStateCount = (uint32_t)dynamic_states.size(); |
| dynamic_info.pDynamicStates = dynamic_states.data(); |
| |
| VkGraphicsPipelineCreateInfo pipeline_info = {}; |
| pipeline_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; |
| pipeline_info.stageCount = 2; |
| pipeline_info.pStages = stage_info; |
| pipeline_info.pVertexInputState = &meshes_->vertex_input_state(); |
| pipeline_info.pInputAssemblyState = &meshes_->input_assembly_state(); |
| pipeline_info.pTessellationState = nullptr; |
| pipeline_info.pViewportState = &viewport_info; |
| pipeline_info.pRasterizationState = &rast_info; |
| pipeline_info.pMultisampleState = &multisample_info; |
| pipeline_info.pDepthStencilState = nullptr; |
| pipeline_info.pColorBlendState = &blend_info; |
| pipeline_info.pDynamicState = &dynamic_info; |
| pipeline_info.layout = pipeline_layout_; |
| pipeline_info.renderPass = render_pass_; |
| pipeline_info.subpass = 0; |
| vk::assert_success(vk::CreateGraphicsPipelines(dev_, VK_NULL_HANDLE, 1, &pipeline_info, nullptr, &pipeline_)); |
| } |
| |
| void Smoke::create_frame_data(int count) { |
| frame_data_.resize(count); |
| |
| create_fences(); |
| create_command_buffers(); |
| |
| if (!use_push_constants_) { |
| create_buffers(); |
| create_buffer_memory(); |
| create_descriptor_sets(); |
| } |
| |
| frame_data_index_ = 0; |
| } |
| |
| void Smoke::destroy_frame_data() { |
| if (!use_push_constants_) { |
| vk::DestroyDescriptorPool(dev_, desc_pool_, nullptr); |
| |
| vk::UnmapMemory(dev_, frame_data_mem_); |
| vk::FreeMemory(dev_, frame_data_mem_, nullptr); |
| |
| for (auto &data : frame_data_) vk::DestroyBuffer(dev_, data.buf, nullptr); |
| } |
| |
| for (auto cmd_pool : worker_cmd_pools_) vk::DestroyCommandPool(dev_, cmd_pool, nullptr); |
| worker_cmd_pools_.clear(); |
| vk::DestroyCommandPool(dev_, primary_cmd_pool_, nullptr); |
| |
| for (auto &data : frame_data_) vk::DestroyFence(dev_, data.fence, nullptr); |
| |
| frame_data_.clear(); |
| } |
| |
| void Smoke::create_fences() { |
| VkFenceCreateInfo fence_info = {}; |
| fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; |
| fence_info.flags = VK_FENCE_CREATE_SIGNALED_BIT; |
| |
| for (auto &data : frame_data_) vk::assert_success(vk::CreateFence(dev_, &fence_info, nullptr, &data.fence)); |
| } |
| |
| void Smoke::create_command_buffers() { |
| VkCommandPoolCreateInfo cmd_pool_info = {}; |
| cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; |
| cmd_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; |
| cmd_pool_info.queueFamilyIndex = queue_family_; |
| |
| VkCommandBufferAllocateInfo cmd_info = {}; |
| cmd_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; |
| cmd_info.commandBufferCount = static_cast<uint32_t>(frame_data_.size()); |
| |
| // create command pools and buffers |
| std::vector<VkCommandPool> cmd_pools(workers_.size() + 1, VK_NULL_HANDLE); |
| std::vector<std::vector<VkCommandBuffer>> cmds_vec(workers_.size() + 1, |
| std::vector<VkCommandBuffer>(frame_data_.size(), VK_NULL_HANDLE)); |
| for (size_t i = 0; i < cmd_pools.size(); i++) { |
| auto &cmd_pool = cmd_pools[i]; |
| auto &cmds = cmds_vec[i]; |
| |
| vk::assert_success(vk::CreateCommandPool(dev_, &cmd_pool_info, nullptr, &cmd_pool)); |
| |
| cmd_info.commandPool = cmd_pool; |
| cmd_info.level = (cmd_pool == cmd_pools.back()) ? VK_COMMAND_BUFFER_LEVEL_PRIMARY : VK_COMMAND_BUFFER_LEVEL_SECONDARY; |
| |
| vk::assert_success(vk::AllocateCommandBuffers(dev_, &cmd_info, cmds.data())); |
| } |
| |
| // update frame_data_ |
| for (size_t i = 0; i < frame_data_.size(); i++) { |
| for (const auto &cmds : cmds_vec) { |
| if (cmds == cmds_vec.back()) { |
| frame_data_[i].primary_cmd = cmds[i]; |
| } else { |
| frame_data_[i].worker_cmds.push_back(cmds[i]); |
| } |
| } |
| } |
| |
| primary_cmd_pool_ = cmd_pools.back(); |
| cmd_pools.pop_back(); |
| worker_cmd_pools_ = cmd_pools; |
| } |
| |
| void Smoke::create_buffers() { |
| VkDeviceSize object_data_size = sizeof(ShaderParamBlock); |
| // align object data to device limit |
| const VkDeviceSize &alignment = physical_dev_props_.limits.minStorageBufferOffsetAlignment; |
| if (object_data_size % alignment) object_data_size += alignment - (object_data_size % alignment); |
| |
| // update simulation |
| sim_.set_frame_data_size(static_cast<uint32_t>(object_data_size)); |
| |
| VkBufferCreateInfo buf_info = {}; |
| buf_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO; |
| buf_info.size = object_data_size * sim_.objects().size(); |
| buf_info.usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT; |
| buf_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE; |
| |
| for (auto &data : frame_data_) vk::assert_success(vk::CreateBuffer(dev_, &buf_info, nullptr, &data.buf)); |
| } |
| |
| void Smoke::create_buffer_memory() { |
| VkMemoryRequirements mem_reqs; |
| vk::GetBufferMemoryRequirements(dev_, frame_data_[0].buf, &mem_reqs); |
| |
| frame_data_aligned_size_ = mem_reqs.size; |
| if (frame_data_aligned_size_ % mem_reqs.alignment) |
| frame_data_aligned_size_ += mem_reqs.alignment - (frame_data_aligned_size_ % mem_reqs.alignment); |
| |
| // allocate memory |
| VkMemoryAllocateInfo mem_info = {}; |
| mem_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; |
| mem_info.allocationSize = frame_data_aligned_size_ * (frame_data_.size() - 1) + mem_reqs.size; |
| |
| for (uint32_t idx = 0; idx < mem_flags_.size(); idx++) { |
| if ((mem_reqs.memoryTypeBits & (1 << idx)) && (mem_flags_[idx] & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) && |
| (mem_flags_[idx] & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT)) { |
| // TODO is this guaranteed to exist? |
| mem_info.memoryTypeIndex = idx; |
| break; |
| } |
| } |
| |
| vk::AllocateMemory(dev_, &mem_info, nullptr, &frame_data_mem_); |
| |
| void *ptr; |
| vk::MapMemory(dev_, frame_data_mem_, 0, VK_WHOLE_SIZE, 0, &ptr); |
| |
| VkDeviceSize offset = 0; |
| for (auto &data : frame_data_) { |
| vk::BindBufferMemory(dev_, data.buf, frame_data_mem_, offset); |
| data.base = reinterpret_cast<uint8_t *>(ptr) + offset; |
| offset += frame_data_aligned_size_; |
| } |
| } |
| |
| void Smoke::create_descriptor_sets() { |
| VkDescriptorPoolSize desc_pool_size = {}; |
| desc_pool_size.type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC; |
| desc_pool_size.descriptorCount = static_cast<uint32_t>(frame_data_.size()); |
| |
| VkDescriptorPoolCreateInfo desc_pool_info = {}; |
| desc_pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO; |
| desc_pool_info.maxSets = static_cast<uint32_t>(frame_data_.size()); |
| desc_pool_info.poolSizeCount = 1; |
| desc_pool_info.pPoolSizes = &desc_pool_size; |
| |
| // create descriptor pool |
| vk::assert_success(vk::CreateDescriptorPool(dev_, &desc_pool_info, nullptr, &desc_pool_)); |
| |
| std::vector<VkDescriptorSetLayout> set_layouts(frame_data_.size(), desc_set_layout_); |
| VkDescriptorSetAllocateInfo set_info = {}; |
| set_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO; |
| set_info.descriptorPool = desc_pool_; |
| set_info.descriptorSetCount = static_cast<uint32_t>(set_layouts.size()); |
| set_info.pSetLayouts = set_layouts.data(); |
| |
| // create descriptor sets |
| std::vector<VkDescriptorSet> desc_sets(frame_data_.size(), VK_NULL_HANDLE); |
| vk::assert_success(vk::AllocateDescriptorSets(dev_, &set_info, desc_sets.data())); |
| |
| std::vector<VkDescriptorBufferInfo> desc_bufs(frame_data_.size()); |
| std::vector<VkWriteDescriptorSet> desc_writes(frame_data_.size()); |
| |
| for (size_t i = 0; i < frame_data_.size(); i++) { |
| auto &data = frame_data_[i]; |
| |
| data.desc_set = desc_sets[i]; |
| |
| VkDescriptorBufferInfo desc_buf = {}; |
| desc_buf.buffer = data.buf; |
| desc_buf.offset = 0; |
| desc_buf.range = VK_WHOLE_SIZE; |
| desc_bufs[i] = desc_buf; |
| |
| VkWriteDescriptorSet desc_write = {}; |
| desc_write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; |
| desc_write.dstSet = data.desc_set; |
| desc_write.dstBinding = 0; |
| desc_write.dstArrayElement = 0; |
| desc_write.descriptorCount = 1; |
| desc_write.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC; |
| desc_write.pBufferInfo = &desc_bufs[i]; |
| desc_writes[i] = desc_write; |
| } |
| |
| vk::UpdateDescriptorSets(dev_, static_cast<uint32_t>(desc_writes.size()), desc_writes.data(), 0, nullptr); |
| } |
| |
| void Smoke::attach_swapchain() { |
| const Shell::Context &ctx = shell_->context(); |
| |
| prepare_viewport(ctx.extent); |
| prepare_framebuffers(ctx.swapchain); |
| |
| update_camera(); |
| } |
| |
| void Smoke::detach_swapchain() { |
| for (auto fb : framebuffers_) vk::DestroyFramebuffer(dev_, fb, nullptr); |
| for (auto view : image_views_) vk::DestroyImageView(dev_, view, nullptr); |
| |
| framebuffers_.clear(); |
| image_views_.clear(); |
| images_.clear(); |
| } |
| |
| void Smoke::prepare_viewport(const VkExtent2D &extent) { |
| extent_ = extent; |
| |
| viewport_.x = 0.0f; |
| viewport_.y = 0.0f; |
| viewport_.width = static_cast<float>(extent.width); |
| viewport_.height = static_cast<float>(extent.height); |
| viewport_.minDepth = 0.0f; |
| viewport_.maxDepth = 1.0f; |
| |
| scissor_.offset = {0, 0}; |
| scissor_.extent = extent_; |
| } |
| |
| void Smoke::prepare_framebuffers(VkSwapchainKHR swapchain) { |
| // get swapchain images |
| vk::get(dev_, swapchain, images_); |
| |
| assert(framebuffers_.empty()); |
| image_views_.reserve(images_.size()); |
| framebuffers_.reserve(images_.size()); |
| for (auto img : images_) { |
| VkImageViewCreateInfo view_info = {}; |
| view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; |
| view_info.image = img; |
| view_info.viewType = VK_IMAGE_VIEW_TYPE_2D; |
| view_info.format = format_; |
| view_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; |
| view_info.subresourceRange.levelCount = 1; |
| view_info.subresourceRange.layerCount = 1; |
| |
| VkImageView view; |
| vk::assert_success(vk::CreateImageView(dev_, &view_info, nullptr, &view)); |
| image_views_.push_back(view); |
| |
| VkFramebufferCreateInfo fb_info = {}; |
| fb_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; |
| fb_info.renderPass = render_pass_; |
| fb_info.attachmentCount = 1; |
| fb_info.pAttachments = &view; |
| fb_info.width = extent_.width; |
| fb_info.height = extent_.height; |
| fb_info.layers = 1; |
| |
| VkFramebuffer fb; |
| vk::assert_success(vk::CreateFramebuffer(dev_, &fb_info, nullptr, &fb)); |
| framebuffers_.push_back(fb); |
| } |
| } |
| |
| void Smoke::update_camera() { |
| const glm::vec3 center(0.0f); |
| const glm::vec3 up(0.f, 0.0f, 1.0f); |
| const glm::mat4 view = glm::lookAt(camera_.eye_pos, center, up); |
| |
| float aspect = static_cast<float>(extent_.width) / static_cast<float>(extent_.height); |
| const glm::mat4 projection = glm::perspective(0.4f, aspect, 0.1f, 100.0f); |
| |
| // Vulkan clip space has inverted Y and half Z. |
| const glm::mat4 clip(1.0f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.5f, 0.0f, 0.0f, 0.0f, 0.5f, 1.0f); |
| |
| camera_.view_projection = clip * projection * view; |
| } |
| |
| void Smoke::draw_object(const Simulation::Object &obj, FrameData &data, VkCommandBuffer cmd) const { |
| if (use_push_constants_) { |
| ShaderParamBlock params; |
| memcpy(params.light_pos, glm::value_ptr(obj.light_pos), sizeof(obj.light_pos)); |
| memcpy(params.light_color, glm::value_ptr(obj.light_color), sizeof(obj.light_color)); |
| memcpy(params.model, glm::value_ptr(obj.model), sizeof(obj.model)); |
| memcpy(params.view_projection, glm::value_ptr(camera_.view_projection), sizeof(camera_.view_projection)); |
| |
| vk::CmdPushConstants(cmd, pipeline_layout_, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(params), ¶ms); |
| } else { |
| ShaderParamBlock *params = reinterpret_cast<ShaderParamBlock *>(data.base + obj.frame_data_offset); |
| memcpy(params->light_pos, glm::value_ptr(obj.light_pos), sizeof(obj.light_pos)); |
| memcpy(params->light_color, glm::value_ptr(obj.light_color), sizeof(obj.light_color)); |
| memcpy(params->model, glm::value_ptr(obj.model), sizeof(obj.model)); |
| memcpy(params->view_projection, glm::value_ptr(camera_.view_projection), sizeof(camera_.view_projection)); |
| |
| vk::CmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_, 0, 1, &data.desc_set, 1, |
| &obj.frame_data_offset); |
| } |
| |
| meshes_->cmd_draw(cmd, obj.mesh); |
| } |
| |
| void Smoke::update_simulation(const Worker &worker) { |
| sim_.update(worker.tick_interval_, worker.object_begin_, worker.object_end_); |
| } |
| |
| void Smoke::draw_objects(Worker &worker) { |
| auto &data = frame_data_[frame_data_index_]; |
| auto cmd = data.worker_cmds[worker.index_]; |
| |
| VkCommandBufferInheritanceInfo inherit_info = {}; |
| inherit_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_INFO; |
| inherit_info.renderPass = render_pass_; |
| inherit_info.framebuffer = worker.fb_; |
| |
| VkCommandBufferBeginInfo begin_info = {}; |
| begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; |
| begin_info.flags = VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT; |
| begin_info.pInheritanceInfo = &inherit_info; |
| |
| vk::BeginCommandBuffer(cmd, &begin_info); |
| |
| vk::CmdSetViewport(cmd, 0, 1, &viewport_); |
| vk::CmdSetScissor(cmd, 0, 1, &scissor_); |
| |
| vk::CmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_); |
| |
| meshes_->cmd_bind_buffers(cmd); |
| |
| for (int i = worker.object_begin_; i < worker.object_end_; i++) { |
| auto &obj = sim_.objects()[i]; |
| |
| draw_object(obj, data, cmd); |
| } |
| |
| vk::EndCommandBuffer(cmd); |
| } |
| |
| void Smoke::on_key(Key key) { |
| switch (key) { |
| case KEY_SHUTDOWN: |
| case KEY_ESC: |
| quit(); |
| break; |
| case KEY_UP: |
| camera_.eye_pos -= glm::vec3(0.05f); |
| update_camera(); |
| break; |
| case KEY_DOWN: |
| camera_.eye_pos += glm::vec3(0.05f); |
| update_camera(); |
| break; |
| case KEY_SPACE: |
| sim_paused_ = !sim_paused_; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| void Smoke::on_tick() { |
| if (sim_paused_) return; |
| |
| for (auto &worker : workers_) worker->update_simulation(); |
| } |
| |
| void Smoke::on_frame(float frame_pred) { |
| frame_count++; |
| |
| // Limit number of frames if argument was specified |
| if (settings_.max_frame_count != -1 && frame_count == settings_.max_frame_count) { |
| // Tell the Game we're done after this frame is drawn. |
| Game::quit(); |
| } |
| |
| auto &data = frame_data_[frame_data_index_]; |
| |
| // wait for the last submission since we reuse frame data |
| vk::assert_success(vk::WaitForFences(dev_, 1, &data.fence, true, UINT64_MAX)); |
| vk::assert_success(vk::ResetFences(dev_, 1, &data.fence)); |
| |
| const Shell::BackBuffer &back = shell_->context().acquired_back_buffer; |
| |
| // ignore frame_pred |
| for (auto &worker : workers_) worker->draw_objects(framebuffers_[back.image_index]); |
| |
| VkResult res = vk::BeginCommandBuffer(data.primary_cmd, &primary_cmd_begin_info_); |
| |
| if (!use_push_constants_) { |
| VkBufferMemoryBarrier buf_barrier = {}; |
| buf_barrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER; |
| buf_barrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT; |
| buf_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT; |
| buf_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; |
| buf_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; |
| buf_barrier.buffer = data.buf; |
| buf_barrier.offset = 0; |
| buf_barrier.size = VK_WHOLE_SIZE; |
| vk::CmdPipelineBarrier(data.primary_cmd, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, 0, 0, nullptr, 1, |
| &buf_barrier, 0, nullptr); |
| } |
| |
| render_pass_begin_info_.framebuffer = framebuffers_[back.image_index]; |
| render_pass_begin_info_.renderArea.extent = extent_; |
| vk::CmdBeginRenderPass(data.primary_cmd, &render_pass_begin_info_, VK_SUBPASS_CONTENTS_SECONDARY_COMMAND_BUFFERS); |
| |
| // record render pass commands |
| for (auto &worker : workers_) worker->wait_idle(); |
| |
| // Flush buffers if enabled |
| if (settings_.flush_buffers) { |
| VkMappedMemoryRange range = {}; |
| range.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE; |
| range.pNext = nullptr; |
| range.memory = frame_data_mem_; |
| range.offset = frame_data_index_ * frame_data_aligned_size_; |
| range.size = frame_data_aligned_size_; |
| |
| vk::FlushMappedMemoryRanges(dev_, 1, &range); |
| } |
| |
| vk::CmdExecuteCommands(data.primary_cmd, static_cast<uint32_t>(data.worker_cmds.size()), data.worker_cmds.data()); |
| |
| vk::CmdEndRenderPass(data.primary_cmd); |
| vk::EndCommandBuffer(data.primary_cmd); |
| |
| // wait for the image to be owned and signal for render completion |
| primary_cmd_submit_info_.pWaitSemaphores = &back.acquire_semaphore; |
| primary_cmd_submit_info_.pCommandBuffers = &data.primary_cmd; |
| primary_cmd_submit_info_.pSignalSemaphores = &back.render_semaphore; |
| |
| res = vk::QueueSubmit(queue_, 1, &primary_cmd_submit_info_, data.fence); |
| |
| frame_data_index_ = (frame_data_index_ + 1) % frame_data_.size(); |
| |
| (void)res; |
| } |
| |
| Smoke::Worker::Worker(Smoke &smoke, int index, int object_begin, int object_end) |
| : smoke_(smoke), |
| index_(index), |
| object_begin_(object_begin), |
| object_end_(object_end), |
| tick_interval_(1.0f / smoke.settings_.ticks_per_second), |
| state_(INIT) {} |
| |
| void Smoke::Worker::start() { |
| state_ = IDLE; |
| thread_ = std::thread(Smoke::Worker::thread_loop, this); |
| } |
| |
| void Smoke::Worker::stop() { |
| { |
| std::lock_guard<std::mutex> lock(mutex_); |
| state_ = INIT; |
| } |
| state_cv_.notify_one(); |
| |
| thread_.join(); |
| } |
| |
| void Smoke::Worker::update_simulation() { |
| { |
| std::lock_guard<std::mutex> lock(mutex_); |
| bool started = (state_ != INIT); |
| |
| state_ = STEP; |
| |
| // step directly |
| if (!started) { |
| smoke_.update_simulation(*this); |
| state_ = INIT; |
| } |
| } |
| state_cv_.notify_one(); |
| } |
| |
| void Smoke::Worker::draw_objects(VkFramebuffer fb) { |
| // wait for step_objects first |
| wait_idle(); |
| |
| { |
| std::lock_guard<std::mutex> lock(mutex_); |
| bool started = (state_ != INIT); |
| |
| fb_ = fb; |
| state_ = DRAW; |
| |
| // render directly |
| if (!started) { |
| smoke_.draw_objects(*this); |
| state_ = INIT; |
| } |
| } |
| state_cv_.notify_one(); |
| } |
| |
| void Smoke::Worker::wait_idle() { |
| std::unique_lock<std::mutex> lock(mutex_); |
| bool started = (state_ != INIT); |
| |
| if (started) state_cv_.wait(lock, [this] { return (state_ == IDLE); }); |
| } |
| |
| void Smoke::Worker::update_loop() { |
| while (true) { |
| std::unique_lock<std::mutex> lock(mutex_); |
| |
| state_cv_.wait(lock, [this] { return (state_ != IDLE); }); |
| if (state_ == INIT) break; |
| |
| assert(state_ == STEP || state_ == DRAW); |
| if (state_ == STEP) |
| smoke_.update_simulation(*this); |
| else |
| smoke_.draw_objects(*this); |
| |
| state_ = IDLE; |
| lock.unlock(); |
| state_cv_.notify_one(); |
| } |
| } |
