From 3fd33ecff7472e4d6fc9e6b3905f56982e497ef2 Mon Sep 17 00:00:00 2001 From: hachem Date: Sun, 23 Aug 2026 17:21:37 +0200 Subject: [feat]: complete RHI api --- src/platform/vulkan/vulkan_context.cpp | 789 --------------------------------- 1 file changed, 789 deletions(-) delete mode 100644 src/platform/vulkan/vulkan_context.cpp (limited to 'src/platform/vulkan/vulkan_context.cpp') diff --git a/src/platform/vulkan/vulkan_context.cpp b/src/platform/vulkan/vulkan_context.cpp deleted file mode 100644 index ece7700..0000000 --- a/src/platform/vulkan/vulkan_context.cpp +++ /dev/null @@ -1,789 +0,0 @@ -#include "vulkan_context.h" -#include "core/log.h" - -#include - -#include -#include -#include "stb_image_write.h" - -#include -#include -#include -#include - -namespace Donut -{ - // Logs and returns false from the enclosing function on any non-success result. - #define VK_CHECK(expr) \ - do { \ - VkResult _r = (expr); \ - if (_r != VK_SUCCESS) { \ - DONUT_ERROR("Vulkan: {} failed ({})", #expr, (int)_r); \ - return false; \ - } \ - } while (0) - - struct VulkanContext::Impl - { - VkInstance instance = VK_NULL_HANDLE; - VkPhysicalDevice physical = VK_NULL_HANDLE; - VkDevice device = VK_NULL_HANDLE; - VkQueue graphics_queue = VK_NULL_HANDLE; - uint32_t graphics_family = 0; - VkPhysicalDeviceMemoryProperties mem_props{}; - - auto find_memory_type(uint32_t type_filter, VkMemoryPropertyFlags flags) const -> uint32_t - { - for (uint32_t i = 0; i < mem_props.memoryTypeCount; ++i) - if ((type_filter & (1u << i)) && - (mem_props.memoryTypes[i].propertyFlags & flags) == flags) - return i; - return UINT32_MAX; - } - - bool create_buffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags props, - VkBuffer& buf, VkDeviceMemory& mem) const - { - VkBufferCreateInfo bci{ VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO }; - bci.size = size; bci.usage = usage; bci.sharingMode = VK_SHARING_MODE_EXCLUSIVE; - if (vkCreateBuffer(device, &bci, nullptr, &buf) != VK_SUCCESS) return false; - VkMemoryRequirements req{}; vkGetBufferMemoryRequirements(device, buf, &req); - VkMemoryAllocateInfo ai{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - ai.allocationSize = req.size; - ai.memoryTypeIndex = find_memory_type(req.memoryTypeBits, props); - if (vkAllocateMemory(device, &ai, nullptr, &mem) != VK_SUCCESS) return false; - vkBindBufferMemory(device, buf, mem, 0); - return true; - } - }; - - VulkanContext::VulkanContext() { m_impl = new Impl(); } - VulkanContext::~VulkanContext() { shutdown(); delete m_impl; m_impl = nullptr; } - - auto VulkanContext::init() -> bool - { - Impl& v = *m_impl; - -#ifdef __APPLE__ - // The Homebrew Vulkan loader does not auto-discover MoltenVK or the - // validation layers; point it at both unless already configured. - if (!getenv("VK_ICD_FILENAMES")) - setenv("VK_ICD_FILENAMES", "/opt/homebrew/etc/vulkan/icd.d/MoltenVK_icd.json", 0); - if (!getenv("VK_LAYER_PATH")) - setenv("VK_LAYER_PATH", "/opt/homebrew/share/vulkan/explicit_layer.d", 0); -#endif - - // Instance - VkApplicationInfo app{ VK_STRUCTURE_TYPE_APPLICATION_INFO }; - app.pApplicationName = "Donut"; - app.apiVersion = VK_API_VERSION_1_2; - - // MoltenVK is a portability driver: without the portability-enumeration - // extension + flag, vkEnumeratePhysicalDevices returns zero devices. - std::vector exts = { - VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME, - VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME, - }; - - // Enable validation layers when they are installed (optional). - std::vector layers; - uint32_t layer_count = 0; - vkEnumerateInstanceLayerProperties(&layer_count, nullptr); - std::vector avail(layer_count); - vkEnumerateInstanceLayerProperties(&layer_count, avail.data()); - for (const auto& l : avail) - if (std::strcmp(l.layerName, "VK_LAYER_KHRONOS_validation") == 0) - layers.push_back("VK_LAYER_KHRONOS_validation"); - - VkInstanceCreateInfo ici{ VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO }; - ici.flags = VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR; - ici.pApplicationInfo = &app; - ici.enabledExtensionCount = (uint32_t)exts.size(); - ici.ppEnabledExtensionNames = exts.data(); - ici.enabledLayerCount = (uint32_t)layers.size(); - ici.ppEnabledLayerNames = layers.data(); - VK_CHECK(vkCreateInstance(&ici, nullptr, &v.instance)); - - // Physical device - uint32_t device_count = 0; - vkEnumeratePhysicalDevices(v.instance, &device_count, nullptr); - if (device_count == 0) { DONUT_ERROR("Vulkan: no physical devices"); return false; } - std::vector devices(device_count); - vkEnumeratePhysicalDevices(v.instance, &device_count, devices.data()); - v.physical = devices[0]; - - VkPhysicalDeviceProperties props{}; - vkGetPhysicalDeviceProperties(v.physical, &props); - vkGetPhysicalDeviceMemoryProperties(v.physical, &v.mem_props); - - // Graphics queue family - uint32_t q_count = 0; - vkGetPhysicalDeviceQueueFamilyProperties(v.physical, &q_count, nullptr); - std::vector qfams(q_count); - vkGetPhysicalDeviceQueueFamilyProperties(v.physical, &q_count, qfams.data()); - bool found = false; - for (uint32_t i = 0; i < q_count; ++i) - if (qfams[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) { v.graphics_family = i; found = true; break; } - if (!found) { DONUT_ERROR("Vulkan: no graphics queue family"); return false; } - - // Logical device - // MoltenVK requires VK_KHR_portability_subset to be enabled if present. - std::vector dev_exts; - uint32_t dev_ext_count = 0; - vkEnumerateDeviceExtensionProperties(v.physical, nullptr, &dev_ext_count, nullptr); - std::vector dev_ext_props(dev_ext_count); - vkEnumerateDeviceExtensionProperties(v.physical, nullptr, &dev_ext_count, dev_ext_props.data()); - for (const auto& e : dev_ext_props) - if (std::strcmp(e.extensionName, "VK_KHR_portability_subset") == 0) - dev_exts.push_back("VK_KHR_portability_subset"); - - float priority = 1.0f; - VkDeviceQueueCreateInfo qci{ VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO }; - qci.queueFamilyIndex = v.graphics_family; - qci.queueCount = 1; - qci.pQueuePriorities = &priority; - - VkDeviceCreateInfo dci{ VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO }; - dci.queueCreateInfoCount = 1; - dci.pQueueCreateInfos = &qci; - dci.enabledExtensionCount = (uint32_t)dev_exts.size(); - dci.ppEnabledExtensionNames = dev_exts.data(); - VK_CHECK(vkCreateDevice(v.physical, &dci, nullptr, &v.device)); - vkGetDeviceQueue(v.device, v.graphics_family, 0, &v.graphics_queue); - - DONUT_INFO("Vulkan device: {} (API {}.{}.{}, validation {})", - props.deviceName, - VK_API_VERSION_MAJOR(props.apiVersion), - VK_API_VERSION_MINOR(props.apiVersion), - VK_API_VERSION_PATCH(props.apiVersion), - layers.empty() ? "off" : "on"); - return true; - } - - auto VulkanContext::self_test_clear() -> bool - { - Impl& v = *m_impl; - if (v.device == VK_NULL_HANDLE) return false; - - const uint32_t W = 64, H = 64; - const VkFormat fmt = VK_FORMAT_R8G8B8A8_UNORM; - - // Offscreen colour image - VkImage image = VK_NULL_HANDLE; VkDeviceMemory image_mem = VK_NULL_HANDLE; - VkImageCreateInfo ici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO }; - ici.imageType = VK_IMAGE_TYPE_2D; - ici.format = fmt; - ici.extent = { W, H, 1 }; - ici.mipLevels = 1; - ici.arrayLayers = 1; - ici.samples = VK_SAMPLE_COUNT_1_BIT; - ici.tiling = VK_IMAGE_TILING_OPTIMAL; - ici.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT; - ici.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; - VK_CHECK(vkCreateImage(v.device, &ici, nullptr, &image)); - - VkMemoryRequirements im_req{}; - vkGetImageMemoryRequirements(v.device, image, &im_req); - VkMemoryAllocateInfo im_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - im_alloc.allocationSize = im_req.size; - im_alloc.memoryTypeIndex = v.find_memory_type(im_req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - VK_CHECK(vkAllocateMemory(v.device, &im_alloc, nullptr, &image_mem)); - VK_CHECK(vkBindImageMemory(v.device, image, image_mem, 0)); - - VkImageView view = VK_NULL_HANDLE; - VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO }; - vci.image = image; - vci.viewType = VK_IMAGE_VIEW_TYPE_2D; - vci.format = fmt; - vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; - VK_CHECK(vkCreateImageView(v.device, &vci, nullptr, &view)); - - // Render pass (clear -> store, leave in TRANSFER_SRC for readback) - VkAttachmentDescription color{}; - color.format = fmt; - color.samples = VK_SAMPLE_COUNT_1_BIT; - color.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; - color.storeOp = VK_ATTACHMENT_STORE_OP_STORE; - color.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; - color.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; - color.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; - color.finalLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; - - VkAttachmentReference color_ref{ 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; - VkSubpassDescription subpass{}; - subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; - subpass.colorAttachmentCount = 1; - subpass.pColorAttachments = &color_ref; - - // Ensure colour writes finish before the read-back copy. - VkSubpassDependency dep{}; - dep.srcSubpass = 0; - dep.dstSubpass = VK_SUBPASS_EXTERNAL; - dep.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; - dep.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; - dep.dstStageMask = VK_PIPELINE_STAGE_TRANSFER_BIT; - dep.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; - - VkRenderPass render_pass = VK_NULL_HANDLE; - VkRenderPassCreateInfo rpci{ VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO }; - rpci.attachmentCount = 1; rpci.pAttachments = &color; - rpci.subpassCount = 1; rpci.pSubpasses = &subpass; - rpci.dependencyCount = 1; rpci.pDependencies = &dep; - VK_CHECK(vkCreateRenderPass(v.device, &rpci, nullptr, &render_pass)); - - VkFramebuffer fb = VK_NULL_HANDLE; - VkFramebufferCreateInfo fbci{ VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO }; - fbci.renderPass = render_pass; - fbci.attachmentCount = 1; fbci.pAttachments = &view; - fbci.width = W; fbci.height = H; fbci.layers = 1; - VK_CHECK(vkCreateFramebuffer(v.device, &fbci, nullptr, &fb)); - - // Host-visible staging buffer for read-back - VkBuffer staging = VK_NULL_HANDLE; VkDeviceMemory staging_mem = VK_NULL_HANDLE; - VkBufferCreateInfo bci{ VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO }; - bci.size = (VkDeviceSize)W * H * 4; - bci.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT; - bci.sharingMode = VK_SHARING_MODE_EXCLUSIVE; - VK_CHECK(vkCreateBuffer(v.device, &bci, nullptr, &staging)); - VkMemoryRequirements b_req{}; - vkGetBufferMemoryRequirements(v.device, staging, &b_req); - VkMemoryAllocateInfo b_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - b_alloc.allocationSize = b_req.size; - b_alloc.memoryTypeIndex = v.find_memory_type(b_req.memoryTypeBits, - VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT); - VK_CHECK(vkAllocateMemory(v.device, &b_alloc, nullptr, &staging_mem)); - VK_CHECK(vkBindBufferMemory(v.device, staging, staging_mem, 0)); - - // Command buffer: clear via render pass, then copy image -> buffer - VkCommandPool pool = VK_NULL_HANDLE; - VkCommandPoolCreateInfo pci{ VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO }; - pci.queueFamilyIndex = v.graphics_family; - VK_CHECK(vkCreateCommandPool(v.device, &pci, nullptr, &pool)); - - VkCommandBuffer cmd = VK_NULL_HANDLE; - VkCommandBufferAllocateInfo cbai{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO }; - cbai.commandPool = pool; cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; cbai.commandBufferCount = 1; - VK_CHECK(vkAllocateCommandBuffers(v.device, &cbai, &cmd)); - - VkCommandBufferBeginInfo begin{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO }; - begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; - VK_CHECK(vkBeginCommandBuffer(cmd, &begin)); - - VkClearValue clear{}; - clear.color = { { 0.2f, 0.4f, 0.8f, 1.0f } }; // -> RGBA8 (51, 102, 204, 255) - VkRenderPassBeginInfo rpbi{ VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO }; - rpbi.renderPass = render_pass; rpbi.framebuffer = fb; - rpbi.renderArea = { { 0, 0 }, { W, H } }; - rpbi.clearValueCount = 1; rpbi.pClearValues = &clear; - vkCmdBeginRenderPass(cmd, &rpbi, VK_SUBPASS_CONTENTS_INLINE); - vkCmdEndRenderPass(cmd); - - VkBufferImageCopy region{}; - region.imageSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 }; - region.imageExtent = { W, H, 1 }; - vkCmdCopyImageToBuffer(cmd, image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, staging, 1, ®ion); - VK_CHECK(vkEndCommandBuffer(cmd)); - - VkFence fence = VK_NULL_HANDLE; - VkFenceCreateInfo fci{ VK_STRUCTURE_TYPE_FENCE_CREATE_INFO }; - VK_CHECK(vkCreateFence(v.device, &fci, nullptr, &fence)); - VkSubmitInfo submit{ VK_STRUCTURE_TYPE_SUBMIT_INFO }; - submit.commandBufferCount = 1; submit.pCommandBuffers = &cmd; - VK_CHECK(vkQueueSubmit(v.graphics_queue, 1, &submit, fence)); - VK_CHECK(vkWaitForFences(v.device, 1, &fence, VK_TRUE, UINT64_MAX)); - - // Read back + verify - void* mapped = nullptr; - VK_CHECK(vkMapMemory(v.device, staging_mem, 0, bci.size, 0, &mapped)); - const uint8_t* px = (const uint8_t*)mapped; - DONUT_INFO("Vulkan clear self-test: pixel RGBA = ({}, {}, {}, {})", - (int)px[0], (int)px[1], (int)px[2], (int)px[3]); - bool ok = px[0] > 45 && px[0] < 60 && px[1] > 95 && px[1] < 110 && - px[2] > 195 && px[2] < 210 && px[3] == 255; - vkUnmapMemory(v.device, staging_mem); - DONUT_INFO("Vulkan clear self-test: {}", ok ? "PASS" : "FAIL"); - - // Cleanup - vkDestroyFence(v.device, fence, nullptr); - vkDestroyCommandPool(v.device, pool, nullptr); - vkDestroyBuffer(v.device, staging, nullptr); - vkFreeMemory(v.device, staging_mem, nullptr); - vkDestroyFramebuffer(v.device, fb, nullptr); - vkDestroyRenderPass(v.device, render_pass, nullptr); - vkDestroyImageView(v.device, view, nullptr); - vkDestroyImage(v.device, image, nullptr); - vkFreeMemory(v.device, image_mem, nullptr); - return ok; - } - - static std::vector load_spirv(const std::string& path) - { - std::ifstream f(path, std::ios::binary | std::ios::ate); - if (!f) return {}; - size_t size = (size_t)f.tellg(); - std::vector data(size / 4); - f.seekg(0); - f.read((char*)data.data(), (std::streamsize)size); - return data; - } - - auto VulkanContext::self_test_triangle() -> bool - { - Impl& v = *m_impl; - if (v.device == VK_NULL_HANDLE) return false; - - const uint32_t W = 64, H = 64; - const VkFormat fmt = VK_FORMAT_R8G8B8A8_UNORM; - - // Offscreen image + view (as in the clear test) - VkImage image = VK_NULL_HANDLE; VkDeviceMemory image_mem = VK_NULL_HANDLE; - VkImageCreateInfo ici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO }; - ici.imageType = VK_IMAGE_TYPE_2D; ici.format = fmt; ici.extent = { W, H, 1 }; - ici.mipLevels = 1; ici.arrayLayers = 1; ici.samples = VK_SAMPLE_COUNT_1_BIT; - ici.tiling = VK_IMAGE_TILING_OPTIMAL; - ici.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT; - VK_CHECK(vkCreateImage(v.device, &ici, nullptr, &image)); - VkMemoryRequirements im_req{}; vkGetImageMemoryRequirements(v.device, image, &im_req); - VkMemoryAllocateInfo im_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - im_alloc.allocationSize = im_req.size; - im_alloc.memoryTypeIndex = v.find_memory_type(im_req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - VK_CHECK(vkAllocateMemory(v.device, &im_alloc, nullptr, &image_mem)); - VK_CHECK(vkBindImageMemory(v.device, image, image_mem, 0)); - VkImageView view = VK_NULL_HANDLE; - VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO }; - vci.image = image; vci.viewType = VK_IMAGE_VIEW_TYPE_2D; vci.format = fmt; - vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; - VK_CHECK(vkCreateImageView(v.device, &vci, nullptr, &view)); - - // Render pass + framebuffer - VkAttachmentDescription color{}; - color.format = fmt; color.samples = VK_SAMPLE_COUNT_1_BIT; - color.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; color.storeOp = VK_ATTACHMENT_STORE_OP_STORE; - color.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; color.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; - color.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; color.finalLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; - VkAttachmentReference color_ref{ 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; - VkSubpassDescription subpass{}; - subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; - subpass.colorAttachmentCount = 1; subpass.pColorAttachments = &color_ref; - VkSubpassDependency dep{}; - dep.srcSubpass = 0; dep.dstSubpass = VK_SUBPASS_EXTERNAL; - dep.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; dep.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; - dep.dstStageMask = VK_PIPELINE_STAGE_TRANSFER_BIT; dep.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; - VkRenderPass render_pass = VK_NULL_HANDLE; - VkRenderPassCreateInfo rpci{ VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO }; - rpci.attachmentCount = 1; rpci.pAttachments = &color; - rpci.subpassCount = 1; rpci.pSubpasses = &subpass; - rpci.dependencyCount = 1; rpci.pDependencies = &dep; - VK_CHECK(vkCreateRenderPass(v.device, &rpci, nullptr, &render_pass)); - VkFramebuffer fb = VK_NULL_HANDLE; - VkFramebufferCreateInfo fbci{ VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO }; - fbci.renderPass = render_pass; fbci.attachmentCount = 1; fbci.pAttachments = &view; - fbci.width = W; fbci.height = H; fbci.layers = 1; - VK_CHECK(vkCreateFramebuffer(v.device, &fbci, nullptr, &fb)); - - // Shader modules from Slang SPIR-V - auto vspv = load_spirv("assets/shaders/generated/VkPipelineTest.vertexMain.spv"); - auto fspv = load_spirv("assets/shaders/generated/VkPipelineTest.fragmentMain.spv"); - if (vspv.empty() || fspv.empty()) { DONUT_ERROR("Vulkan: VkPipelineTest SPIR-V not found"); return false; } - VkShaderModule vmod = VK_NULL_HANDLE, fmod = VK_NULL_HANDLE; - VkShaderModuleCreateInfo smci{ VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO }; - smci.codeSize = vspv.size() * 4; smci.pCode = vspv.data(); - VK_CHECK(vkCreateShaderModule(v.device, &smci, nullptr, &vmod)); - smci.codeSize = fspv.size() * 4; smci.pCode = fspv.data(); - VK_CHECK(vkCreateShaderModule(v.device, &smci, nullptr, &fmod)); - - // Graphics pipeline - VkPipelineShaderStageCreateInfo stages[2]{}; - stages[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; - stages[0].stage = VK_SHADER_STAGE_VERTEX_BIT; stages[0].module = vmod; stages[0].pName = "main"; - stages[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; - stages[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT; stages[1].module = fmod; stages[1].pName = "main"; - - VkPipelineVertexInputStateCreateInfo vin{ VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO }; - VkPipelineInputAssemblyStateCreateInfo ia{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO }; - ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; - VkViewport vp{ 0, 0, (float)W, (float)H, 0, 1 }; - VkRect2D scissor{ { 0, 0 }, { W, H } }; - VkPipelineViewportStateCreateInfo vps{ VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO }; - vps.viewportCount = 1; vps.pViewports = &vp; vps.scissorCount = 1; vps.pScissors = &scissor; - VkPipelineRasterizationStateCreateInfo rs{ VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO }; - rs.polygonMode = VK_POLYGON_MODE_FILL; rs.cullMode = VK_CULL_MODE_NONE; rs.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; rs.lineWidth = 1.0f; - VkPipelineMultisampleStateCreateInfo ms{ VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO }; - ms.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; - VkPipelineColorBlendAttachmentState cba{}; - cba.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; - VkPipelineColorBlendStateCreateInfo cb{ VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO }; - cb.attachmentCount = 1; cb.pAttachments = &cba; - - VkPipelineLayout layout = VK_NULL_HANDLE; - VkPipelineLayoutCreateInfo plci{ VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO }; - VK_CHECK(vkCreatePipelineLayout(v.device, &plci, nullptr, &layout)); - - VkPipeline pipeline = VK_NULL_HANDLE; - VkGraphicsPipelineCreateInfo gpci{ VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO }; - gpci.stageCount = 2; gpci.pStages = stages; - gpci.pVertexInputState = &vin; gpci.pInputAssemblyState = &ia; - gpci.pViewportState = &vps; gpci.pRasterizationState = &rs; - gpci.pMultisampleState = &ms; gpci.pColorBlendState = &cb; - gpci.layout = layout; gpci.renderPass = render_pass; gpci.subpass = 0; - VK_CHECK(vkCreateGraphicsPipelines(v.device, VK_NULL_HANDLE, 1, &gpci, nullptr, &pipeline)); - - // Readback staging buffer - VkBuffer staging = VK_NULL_HANDLE; VkDeviceMemory staging_mem = VK_NULL_HANDLE; - VkBufferCreateInfo bci{ VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO }; - bci.size = (VkDeviceSize)W * H * 4; bci.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT; - VK_CHECK(vkCreateBuffer(v.device, &bci, nullptr, &staging)); - VkMemoryRequirements b_req{}; vkGetBufferMemoryRequirements(v.device, staging, &b_req); - VkMemoryAllocateInfo b_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - b_alloc.allocationSize = b_req.size; - b_alloc.memoryTypeIndex = v.find_memory_type(b_req.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT); - VK_CHECK(vkAllocateMemory(v.device, &b_alloc, nullptr, &staging_mem)); - VK_CHECK(vkBindBufferMemory(v.device, staging, staging_mem, 0)); - - // Record + submit - VkCommandPool pool = VK_NULL_HANDLE; - VkCommandPoolCreateInfo pci{ VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO }; - pci.queueFamilyIndex = v.graphics_family; - VK_CHECK(vkCreateCommandPool(v.device, &pci, nullptr, &pool)); - VkCommandBuffer cmd = VK_NULL_HANDLE; - VkCommandBufferAllocateInfo cbai{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO }; - cbai.commandPool = pool; cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; cbai.commandBufferCount = 1; - VK_CHECK(vkAllocateCommandBuffers(v.device, &cbai, &cmd)); - VkCommandBufferBeginInfo begin{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO }; - begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; - VK_CHECK(vkBeginCommandBuffer(cmd, &begin)); - VkClearValue clear{}; clear.color = { { 0.0f, 0.0f, 0.0f, 1.0f } }; - VkRenderPassBeginInfo rpbi{ VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO }; - rpbi.renderPass = render_pass; rpbi.framebuffer = fb; - rpbi.renderArea = { { 0, 0 }, { W, H } }; - rpbi.clearValueCount = 1; rpbi.pClearValues = &clear; - vkCmdBeginRenderPass(cmd, &rpbi, VK_SUBPASS_CONTENTS_INLINE); - vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); - vkCmdDraw(cmd, 3, 1, 0, 0); - vkCmdEndRenderPass(cmd); - VkBufferImageCopy region{}; - region.imageSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 }; - region.imageExtent = { W, H, 1 }; - vkCmdCopyImageToBuffer(cmd, image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, staging, 1, ®ion); - VK_CHECK(vkEndCommandBuffer(cmd)); - - VkFence fence = VK_NULL_HANDLE; - VkFenceCreateInfo fci{ VK_STRUCTURE_TYPE_FENCE_CREATE_INFO }; - VK_CHECK(vkCreateFence(v.device, &fci, nullptr, &fence)); - VkSubmitInfo submit{ VK_STRUCTURE_TYPE_SUBMIT_INFO }; - submit.commandBufferCount = 1; submit.pCommandBuffers = &cmd; - VK_CHECK(vkQueueSubmit(v.graphics_queue, 1, &submit, fence)); - VK_CHECK(vkWaitForFences(v.device, 1, &fence, VK_TRUE, UINT64_MAX)); - - // Verify: centre pixel should be the mid-gradient (not black) - void* mapped = nullptr; - VK_CHECK(vkMapMemory(v.device, staging_mem, 0, bci.size, 0, &mapped)); - const uint8_t* px = (const uint8_t*)mapped; - size_t c = ((size_t)(H / 2) * W + (W / 2)) * 4; - DONUT_INFO("Vulkan triangle self-test: centre pixel RGBA = ({}, {}, {}, {})", - (int)px[c + 0], (int)px[c + 1], (int)px[c + 2], (int)px[c + 3]); - bool ok = (px[c + 0] > 40 || px[c + 1] > 40) && px[c + 3] == 255; - vkUnmapMemory(v.device, staging_mem); - DONUT_INFO("Vulkan triangle self-test: {}", ok ? "PASS" : "FAIL"); - - // Cleanup - vkDestroyFence(v.device, fence, nullptr); - vkDestroyCommandPool(v.device, pool, nullptr); - vkDestroyBuffer(v.device, staging, nullptr); - vkFreeMemory(v.device, staging_mem, nullptr); - vkDestroyPipeline(v.device, pipeline, nullptr); - vkDestroyPipelineLayout(v.device, layout, nullptr); - vkDestroyShaderModule(v.device, vmod, nullptr); - vkDestroyShaderModule(v.device, fmod, nullptr); - vkDestroyFramebuffer(v.device, fb, nullptr); - vkDestroyRenderPass(v.device, render_pass, nullptr); - vkDestroyImageView(v.device, view, nullptr); - vkDestroyImage(v.device, image, nullptr); - vkFreeMemory(v.device, image_mem, nullptr); - return ok; - } - - auto VulkanContext::render_geodesic(const char* png_path) -> bool - { - Impl& v = *m_impl; - if (v.device == VK_NULL_HANDLE) return false; - - const uint32_t W = 384, H = 216; - const VkFormat fmt = VK_FORMAT_R8G8B8A8_UNORM; - const float SagA_rs = 1.269e10f; - - // Offscreen colour target - VkImage image = VK_NULL_HANDLE; VkDeviceMemory image_mem = VK_NULL_HANDLE; - VkImageCreateInfo ici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO }; - ici.imageType = VK_IMAGE_TYPE_2D; ici.format = fmt; ici.extent = { W, H, 1 }; - ici.mipLevels = 1; ici.arrayLayers = 1; ici.samples = VK_SAMPLE_COUNT_1_BIT; - ici.tiling = VK_IMAGE_TILING_OPTIMAL; - ici.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT; - VK_CHECK(vkCreateImage(v.device, &ici, nullptr, &image)); - VkMemoryRequirements im_req{}; vkGetImageMemoryRequirements(v.device, image, &im_req); - VkMemoryAllocateInfo im_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - im_alloc.allocationSize = im_req.size; - im_alloc.memoryTypeIndex = v.find_memory_type(im_req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - VK_CHECK(vkAllocateMemory(v.device, &im_alloc, nullptr, &image_mem)); - VK_CHECK(vkBindImageMemory(v.device, image, image_mem, 0)); - VkImageView view = VK_NULL_HANDLE; - VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO }; - vci.image = image; vci.viewType = VK_IMAGE_VIEW_TYPE_2D; vci.format = fmt; - vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; - VK_CHECK(vkCreateImageView(v.device, &vci, nullptr, &view)); - - VkAttachmentDescription color{}; - color.format = fmt; color.samples = VK_SAMPLE_COUNT_1_BIT; - color.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; color.storeOp = VK_ATTACHMENT_STORE_OP_STORE; - color.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; color.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; - color.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; color.finalLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; - VkAttachmentReference color_ref{ 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; - VkSubpassDescription subpass{}; subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; - subpass.colorAttachmentCount = 1; subpass.pColorAttachments = &color_ref; - VkSubpassDependency dep{}; - dep.srcSubpass = 0; dep.dstSubpass = VK_SUBPASS_EXTERNAL; - dep.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; dep.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; - dep.dstStageMask = VK_PIPELINE_STAGE_TRANSFER_BIT; dep.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; - VkRenderPass render_pass = VK_NULL_HANDLE; - VkRenderPassCreateInfo rpci{ VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO }; - rpci.attachmentCount = 1; rpci.pAttachments = &color; - rpci.subpassCount = 1; rpci.pSubpasses = &subpass; - rpci.dependencyCount = 1; rpci.pDependencies = &dep; - VK_CHECK(vkCreateRenderPass(v.device, &rpci, nullptr, &render_pass)); - VkFramebuffer fb = VK_NULL_HANDLE; - VkFramebufferCreateInfo fbci{ VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO }; - fbci.renderPass = render_pass; fbci.attachmentCount = 1; fbci.pAttachments = &view; - fbci.width = W; fbci.height = H; fbci.layers = 1; - VK_CHECK(vkCreateFramebuffer(v.device, &fbci, nullptr, &fb)); - - // Uniform buffers (host-visible), filled to match the shader's std140 layout - const VkMemoryPropertyFlags host_vis = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT; - VkBuffer cam_buf, disk_buf, obj_buf, sim_buf; - VkDeviceMemory cam_mem, disk_mem, obj_mem, sim_mem; - v.create_buffer(128, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, host_vis, cam_buf, cam_mem); - v.create_buffer(32, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, host_vis, disk_buf, disk_mem); - v.create_buffer(800, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, host_vis, obj_buf, obj_mem); - v.create_buffer(16, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, host_vis, sim_buf, sim_mem); - - struct CamUBO { - glm::vec3 pos; float p0; glm::vec3 right; float p1; - glm::vec3 up; float p2; glm::vec3 fwd; float p3; - float tan_half_fov; float aspect; uint32_t moving; int p4; - } cam{}; - glm::vec3 cam_pos(1e11f, 0.32e11f, 0.0f); - glm::vec3 fwd = glm::normalize(glm::vec3(0.0f) - cam_pos); - glm::vec3 right = glm::normalize(glm::cross(fwd, glm::vec3(0, 1, 0))); - glm::vec3 up = glm::cross(right, fwd); - cam.pos = cam_pos; cam.right = right; cam.up = up; cam.fwd = fwd; - cam.tan_half_fov = 0.57735f; cam.aspect = (float)W / (float)H; cam.moving = 0; - void* p = nullptr; - vkMapMemory(v.device, cam_mem, 0, 128, 0, &p); memcpy(p, &cam, sizeof(cam)); vkUnmapMemory(v.device, cam_mem); - - float disk[8] = { SagA_rs * 2.2f, SagA_rs * 5.2f, 2.0f, SagA_rs * 0.1f, 0.1f, 0, 0, 0 }; - vkMapMemory(v.device, disk_mem, 0, 32, 0, &p); memcpy(p, disk, sizeof(disk)); vkUnmapMemory(v.device, disk_mem); - - std::vector obj_data(800, 0); - int num_objects = 1; memcpy(obj_data.data(), &num_objects, 4); - float pos_radius[4] = { 0, 0, 0, SagA_rs }; memcpy(obj_data.data() + 16, pos_radius, 16); - float obj_color[4] = { 0, 0, 0, 1 }; memcpy(obj_data.data() + 272, obj_color, 16); - vkMapMemory(v.device, obj_mem, 0, 800, 0, &p); memcpy(p, obj_data.data(), 800); vkUnmapMemory(v.device, obj_mem); - - struct SimUBO { int steps_moving; int steps_static; float early_exit; float time; } sim{ 6000, 6000, 5e12f, 0.0f }; - vkMapMemory(v.device, sim_mem, 0, 16, 0, &p); memcpy(p, &sim, sizeof(sim)); vkUnmapMemory(v.device, sim_mem); - - // Dark cubemap (stands in for the HDRI for now) - VkImage cube = VK_NULL_HANDLE; VkDeviceMemory cube_mem = VK_NULL_HANDLE; - VkImageCreateInfo cci{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO }; - cci.flags = VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT; - cci.imageType = VK_IMAGE_TYPE_2D; cci.format = fmt; cci.extent = { 1, 1, 1 }; - cci.mipLevels = 1; cci.arrayLayers = 6; cci.samples = VK_SAMPLE_COUNT_1_BIT; - cci.tiling = VK_IMAGE_TILING_OPTIMAL; - cci.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT; - VK_CHECK(vkCreateImage(v.device, &cci, nullptr, &cube)); - VkMemoryRequirements cube_req{}; vkGetImageMemoryRequirements(v.device, cube, &cube_req); - VkMemoryAllocateInfo cube_alloc{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO }; - cube_alloc.allocationSize = cube_req.size; - cube_alloc.memoryTypeIndex = v.find_memory_type(cube_req.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - VK_CHECK(vkAllocateMemory(v.device, &cube_alloc, nullptr, &cube_mem)); - VK_CHECK(vkBindImageMemory(v.device, cube, cube_mem, 0)); - VkImageView cube_view = VK_NULL_HANDLE; - VkImageViewCreateInfo cvci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO }; - cvci.image = cube; cvci.viewType = VK_IMAGE_VIEW_TYPE_CUBE; cvci.format = fmt; - cvci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 6 }; - VK_CHECK(vkCreateImageView(v.device, &cvci, nullptr, &cube_view)); - VkSampler sampler = VK_NULL_HANDLE; - VkSamplerCreateInfo smci{ VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO }; - smci.magFilter = VK_FILTER_LINEAR; smci.minFilter = VK_FILTER_LINEAR; - smci.addressModeU = smci.addressModeV = smci.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; - VK_CHECK(vkCreateSampler(v.device, &smci, nullptr, &sampler)); - - VkBuffer cube_staging; VkDeviceMemory cube_staging_mem; - v.create_buffer(6 * 4, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, host_vis, cube_staging, cube_staging_mem); - uint8_t cube_pixels[6 * 4]; - for (int i = 0; i < 6; ++i) { cube_pixels[i * 4 + 0] = 6; cube_pixels[i * 4 + 1] = 6; cube_pixels[i * 4 + 2] = 14; cube_pixels[i * 4 + 3] = 255; } - vkMapMemory(v.device, cube_staging_mem, 0, 24, 0, &p); memcpy(p, cube_pixels, 24); vkUnmapMemory(v.device, cube_staging_mem); - - // Descriptor set: 4 UBOs (bindings 0-3) + cubemap sampler (binding 4) - VkDescriptorSetLayoutBinding binds[5]{}; - for (int i = 0; i < 4; ++i) { binds[i].binding = i; binds[i].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; binds[i].descriptorCount = 1; binds[i].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT; } - binds[4].binding = 4; binds[4].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; binds[4].descriptorCount = 1; binds[4].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT; - VkDescriptorSetLayout set_layout = VK_NULL_HANDLE; - VkDescriptorSetLayoutCreateInfo dslci{ VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO }; - dslci.bindingCount = 5; dslci.pBindings = binds; - VK_CHECK(vkCreateDescriptorSetLayout(v.device, &dslci, nullptr, &set_layout)); - VkDescriptorPoolSize psizes[2] = { { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 4 }, { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1 } }; - VkDescriptorPool pool = VK_NULL_HANDLE; - VkDescriptorPoolCreateInfo dpci{ VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO }; - dpci.maxSets = 1; dpci.poolSizeCount = 2; dpci.pPoolSizes = psizes; - VK_CHECK(vkCreateDescriptorPool(v.device, &dpci, nullptr, &pool)); - VkDescriptorSet set = VK_NULL_HANDLE; - VkDescriptorSetAllocateInfo dsai{ VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO }; - dsai.descriptorPool = pool; dsai.descriptorSetCount = 1; dsai.pSetLayouts = &set_layout; - VK_CHECK(vkAllocateDescriptorSets(v.device, &dsai, &set)); - - // load geodesic SPIR-V + build the pipeline - auto vspv = load_spirv("assets/shaders/generated/Geodesic.vertexMain.spv"); - auto fspv = load_spirv("assets/shaders/generated/Geodesic.fragmentMain.spv"); - if (vspv.empty() || fspv.empty()) { DONUT_ERROR("Vulkan: geodesic SPIR-V not found"); return false; } - VkShaderModule vmod, fmod; - VkShaderModuleCreateInfo smci2{ VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO }; - smci2.codeSize = vspv.size() * 4; smci2.pCode = vspv.data(); VK_CHECK(vkCreateShaderModule(v.device, &smci2, nullptr, &vmod)); - smci2.codeSize = fspv.size() * 4; smci2.pCode = fspv.data(); VK_CHECK(vkCreateShaderModule(v.device, &smci2, nullptr, &fmod)); - - VkPipelineLayout layout = VK_NULL_HANDLE; - VkPipelineLayoutCreateInfo plci{ VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO }; - plci.setLayoutCount = 1; plci.pSetLayouts = &set_layout; - VK_CHECK(vkCreatePipelineLayout(v.device, &plci, nullptr, &layout)); - - VkPipelineShaderStageCreateInfo stages[2]{}; - stages[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; stages[0].stage = VK_SHADER_STAGE_VERTEX_BIT; stages[0].module = vmod; stages[0].pName = "main"; - stages[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; stages[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT; stages[1].module = fmod; stages[1].pName = "main"; - VkVertexInputBindingDescription vib{ 0, 16, VK_VERTEX_INPUT_RATE_VERTEX }; - VkVertexInputAttributeDescription via[2] = { { 0, 0, VK_FORMAT_R32G32_SFLOAT, 0 }, { 1, 0, VK_FORMAT_R32G32_SFLOAT, 8 } }; - VkPipelineVertexInputStateCreateInfo vin{ VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO }; - vin.vertexBindingDescriptionCount = 1; vin.pVertexBindingDescriptions = &vib; - vin.vertexAttributeDescriptionCount = 2; vin.pVertexAttributeDescriptions = via; - VkPipelineInputAssemblyStateCreateInfo ia{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO }; ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; - VkViewport vp{ 0, 0, (float)W, (float)H, 0, 1 }; VkRect2D sc{ { 0, 0 }, { W, H } }; - VkPipelineViewportStateCreateInfo vps{ VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO }; vps.viewportCount = 1; vps.pViewports = &vp; vps.scissorCount = 1; vps.pScissors = ≻ - VkPipelineRasterizationStateCreateInfo rs{ VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO }; rs.polygonMode = VK_POLYGON_MODE_FILL; rs.cullMode = VK_CULL_MODE_NONE; rs.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; rs.lineWidth = 1.0f; - VkPipelineMultisampleStateCreateInfo ms{ VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO }; ms.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; - VkPipelineColorBlendAttachmentState cba{}; cba.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; - VkPipelineColorBlendStateCreateInfo cb{ VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO }; cb.attachmentCount = 1; cb.pAttachments = &cba; - VkPipeline pipeline = VK_NULL_HANDLE; - VkGraphicsPipelineCreateInfo gpci{ VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO }; - gpci.stageCount = 2; gpci.pStages = stages; - gpci.pVertexInputState = &vin; gpci.pInputAssemblyState = &ia; gpci.pViewportState = &vps; - gpci.pRasterizationState = &rs; gpci.pMultisampleState = &ms; gpci.pColorBlendState = &cb; - gpci.layout = layout; gpci.renderPass = render_pass; gpci.subpass = 0; - VK_CHECK(vkCreateGraphicsPipelines(v.device, VK_NULL_HANDLE, 1, &gpci, nullptr, &pipeline)); - - // Fullscreen quad (position.xy, texcoord.uv) - float quad[] = { - -1.f, 1.f, 0.f, 1.f, -1.f, -1.f, 0.f, 0.f, 1.f, -1.f, 1.f, 0.f, - -1.f, 1.f, 0.f, 1.f, 1.f, -1.f, 1.f, 0.f, 1.f, 1.f, 1.f, 1.f, - }; - VkBuffer vbuf; VkDeviceMemory vbuf_mem; - v.create_buffer(sizeof(quad), VK_BUFFER_USAGE_VERTEX_BUFFER_BIT, host_vis, vbuf, vbuf_mem); - vkMapMemory(v.device, vbuf_mem, 0, sizeof(quad), 0, &p); memcpy(p, quad, sizeof(quad)); vkUnmapMemory(v.device, vbuf_mem); - - // Write the descriptor set - VkDescriptorBufferInfo bi[4] = { - { cam_buf, 0, VK_WHOLE_SIZE }, { disk_buf, 0, VK_WHOLE_SIZE }, { obj_buf, 0, VK_WHOLE_SIZE }, { sim_buf, 0, VK_WHOLE_SIZE } }; - VkDescriptorImageInfo ii{ sampler, cube_view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL }; - VkWriteDescriptorSet writes[5]{}; - for (int i = 0; i < 4; ++i) { writes[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; writes[i].dstSet = set; writes[i].dstBinding = i; writes[i].descriptorCount = 1; writes[i].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER; writes[i].pBufferInfo = &bi[i]; } - writes[4].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; writes[4].dstSet = set; writes[4].dstBinding = 4; writes[4].descriptorCount = 1; writes[4].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; writes[4].pImageInfo = ⅈ - vkUpdateDescriptorSets(v.device, 5, writes, 0, nullptr); - - VkBuffer readback; VkDeviceMemory readback_mem; - v.create_buffer((VkDeviceSize)W * H * 4, VK_BUFFER_USAGE_TRANSFER_DST_BIT, host_vis, readback, readback_mem); - - // Record + submit - VkCommandPool cpool = VK_NULL_HANDLE; - VkCommandPoolCreateInfo pci{ VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO }; pci.queueFamilyIndex = v.graphics_family; - VK_CHECK(vkCreateCommandPool(v.device, &pci, nullptr, &cpool)); - VkCommandBuffer cmd = VK_NULL_HANDLE; - VkCommandBufferAllocateInfo cbai{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO }; cbai.commandPool = cpool; cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; cbai.commandBufferCount = 1; - VK_CHECK(vkAllocateCommandBuffers(v.device, &cbai, &cmd)); - VkCommandBufferBeginInfo begin{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO }; begin.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; - VK_CHECK(vkBeginCommandBuffer(cmd, &begin)); - - VkImageMemoryBarrier to_dst{ VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER }; - to_dst.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; to_dst.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; - to_dst.image = cube; to_dst.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 6 }; - to_dst.srcAccessMask = 0; to_dst.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; - vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &to_dst); - VkBufferImageCopy cube_copy{}; cube_copy.imageSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 6 }; cube_copy.imageExtent = { 1, 1, 1 }; - vkCmdCopyBufferToImage(cmd, cube_staging, cube, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &cube_copy); - VkImageMemoryBarrier to_read = to_dst; - to_read.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; to_read.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; - to_read.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; to_read.dstAccessMask = VK_ACCESS_SHADER_READ_BIT; - vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &to_read); - - VkClearValue clear{}; clear.color = { { 0, 0, 0, 1 } }; - VkRenderPassBeginInfo rpbi{ VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO }; - rpbi.renderPass = render_pass; rpbi.framebuffer = fb; rpbi.renderArea = { { 0, 0 }, { W, H } }; - rpbi.clearValueCount = 1; rpbi.pClearValues = &clear; - vkCmdBeginRenderPass(cmd, &rpbi, VK_SUBPASS_CONTENTS_INLINE); - vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); - vkCmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, layout, 0, 1, &set, 0, nullptr); - VkDeviceSize voff = 0; vkCmdBindVertexBuffers(cmd, 0, 1, &vbuf, &voff); - vkCmdDraw(cmd, 6, 1, 0, 0); - vkCmdEndRenderPass(cmd); - VkBufferImageCopy region{}; region.imageSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 }; region.imageExtent = { W, H, 1 }; - vkCmdCopyImageToBuffer(cmd, image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, readback, 1, ®ion); - VK_CHECK(vkEndCommandBuffer(cmd)); - - VkFence fence = VK_NULL_HANDLE; VkFenceCreateInfo fci{ VK_STRUCTURE_TYPE_FENCE_CREATE_INFO }; - VK_CHECK(vkCreateFence(v.device, &fci, nullptr, &fence)); - VkSubmitInfo submit{ VK_STRUCTURE_TYPE_SUBMIT_INFO }; submit.commandBufferCount = 1; submit.pCommandBuffers = &cmd; - VK_CHECK(vkQueueSubmit(v.graphics_queue, 1, &submit, fence)); - VK_CHECK(vkWaitForFences(v.device, 1, &fence, VK_TRUE, UINT64_MAX)); - - vkMapMemory(v.device, readback_mem, 0, (VkDeviceSize)W * H * 4, 0, &p); - stbi_write_png(png_path, W, H, 4, p, W * 4); - vkUnmapMemory(v.device, readback_mem); - DONUT_INFO("Vulkan geodesic render written to {}", png_path); - - vkDestroyFence(v.device, fence, nullptr); - vkDestroyCommandPool(v.device, cpool, nullptr); - vkDestroyBuffer(v.device, readback, nullptr); vkFreeMemory(v.device, readback_mem, nullptr); - vkDestroyBuffer(v.device, vbuf, nullptr); vkFreeMemory(v.device, vbuf_mem, nullptr); - vkDestroyPipeline(v.device, pipeline, nullptr); vkDestroyPipelineLayout(v.device, layout, nullptr); - vkDestroyShaderModule(v.device, vmod, nullptr); vkDestroyShaderModule(v.device, fmod, nullptr); - vkDestroyDescriptorPool(v.device, pool, nullptr); vkDestroyDescriptorSetLayout(v.device, set_layout, nullptr); - vkDestroySampler(v.device, sampler, nullptr); vkDestroyImageView(v.device, cube_view, nullptr); - vkDestroyImage(v.device, cube, nullptr); vkFreeMemory(v.device, cube_mem, nullptr); - vkDestroyBuffer(v.device, cube_staging, nullptr); vkFreeMemory(v.device, cube_staging_mem, nullptr); - vkDestroyBuffer(v.device, cam_buf, nullptr); vkFreeMemory(v.device, cam_mem, nullptr); - vkDestroyBuffer(v.device, disk_buf, nullptr); vkFreeMemory(v.device, disk_mem, nullptr); - vkDestroyBuffer(v.device, obj_buf, nullptr); vkFreeMemory(v.device, obj_mem, nullptr); - vkDestroyBuffer(v.device, sim_buf, nullptr); vkFreeMemory(v.device, sim_mem, nullptr); - vkDestroyFramebuffer(v.device, fb, nullptr); vkDestroyRenderPass(v.device, render_pass, nullptr); - vkDestroyImageView(v.device, view, nullptr); vkDestroyImage(v.device, image, nullptr); vkFreeMemory(v.device, image_mem, nullptr); - return true; - } - - auto VulkanContext::shutdown() -> void - { - Impl& v = *m_impl; - if (v.device) { vkDestroyDevice(v.device, nullptr); v.device = VK_NULL_HANDLE; } - if (v.instance) { vkDestroyInstance(v.instance, nullptr); v.instance = VK_NULL_HANDLE; } - } - - auto vulkan_self_test() -> bool - { - VulkanContext ctx; - if (!ctx.init()) - { - DONUT_ERROR("Vulkan: initialization failed"); - return false; - } - bool ok = ctx.self_test_clear(); - ok = ctx.self_test_triangle() && ok; - ctx.shutdown(); - return ok; - } -} -- cgit v1.3