Added Pipelines and Triangle.

Blaze.cpp

@@ -1,12 +1,16 @@
 // Blaze.cpp : This file contains the 'main' function. Program execution begins and ends there.
 //
 
+#include <array>
 #include <fmt/format.h>
 
 #include <cassert>
+#include <span>
+#include <vector>
 
 #include <volk.h>
 #include <SDL3/SDL.h>
+#include <SDL3/SDL_filesystem.h>
 #include <SDL3/SDL_vulkan.h>
 
 #define ASSERT(COND) assert((COND))
@@ -15,6 +19,12 @@
 
 constexpr uint32_t WIDTH = 1280;
 constexpr uint32_t HEIGHT = 720;
+constexpr uint32_t NUM_FRAMES = 3;
+
+uint32_t Clamp(uint32_t const val, uint32_t const minVal, uint32_t const maxVal)
+{
+	return std::min(maxVal, std::max(val, minVal));
+}
 
 int main()
 {
@@ -24,7 +34,7 @@ int main()
 
 	SDL_Window* window = SDL_CreateWindow("Blaze Test", WIDTH, HEIGHT, SDL_WINDOW_VULKAN);
 
-	VkApplicationInfo applicationInfo{
+	VkApplicationInfo constexpr applicationInfo = {
 		.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
 		.pNext = nullptr,
 		.pApplicationName = "Test",
@@ -37,7 +47,7 @@ int main()
 	uint32_t instanceExtensionCount;
 	char const* const* instanceExtensions = SDL_Vulkan_GetInstanceExtensions(&instanceExtensionCount);
 
-	VkInstanceCreateInfo createInfo{
+	VkInstanceCreateInfo const instanceCreateInfo = {
 		.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
 		.pNext = nullptr,
 		.flags = 0,
@@ -49,19 +59,611 @@ int main()
 	};
 
 	VkInstance instance;
-	VK_CHECK(vkCreateInstance(&createInfo, nullptr, &instance));
+	VK_CHECK(vkCreateInstance(&instanceCreateInfo, nullptr, &instance));
 	volkLoadInstance(instance);
 
 	VkSurfaceKHR surface;
 	ASSERT(SDL_Vulkan_CreateSurface(window, instance, nullptr, &surface));
 
+	VkPhysicalDevice physicalDeviceInUse = nullptr;
+	VkDevice device = nullptr;
+	uint32_t directQueueFamilyIndex = 0;
+	VkQueue directQueue;
+	{
+		uint32_t physicalDeviceCount;
+		VK_CHECK(vkEnumeratePhysicalDevices(instance, &physicalDeviceCount, nullptr));
+		SDL_Log("Found %u GPUs", physicalDeviceCount);
+
+		std::vector<VkPhysicalDevice> physicalDevices(physicalDeviceCount);
+		VK_CHECK(vkEnumeratePhysicalDevices(instance, &physicalDeviceCount, physicalDevices.data()));
+
+
+		std::vector<VkQueueFamilyProperties> queueFamilyProperties;
+		for (VkPhysicalDevice const physicalDevice : physicalDevices)
+		{
+			VkPhysicalDeviceProperties properties;
+			vkGetPhysicalDeviceProperties(physicalDevice, &properties);
+
+			SDL_Log("GPU: %s", properties.deviceName);
+
+			SDL_Log("- API Version %d.%d.%d",
+				VK_API_VERSION_MAJOR(properties.apiVersion),
+				VK_API_VERSION_MINOR(properties.apiVersion),
+				VK_API_VERSION_PATCH(properties.apiVersion));
+
+			constexpr static uint32_t API_PATCH_BITS = 0xFFF;
+			if ((properties.apiVersion & (~API_PATCH_BITS)) < VK_API_VERSION_1_3)
+			{
+				continue;
+			}
+
+			if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_CPU)
+			{
+				continue;
+			}
+
+			uint32_t queueFamilyCount;
+			vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyCount, nullptr);
+			queueFamilyProperties.resize(queueFamilyCount);
+			vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyCount, queueFamilyProperties.data());
+
+			for (uint32_t queueFamilyIndex = 0; VkQueueFamilyProperties const qfp : queueFamilyProperties)
+			{
+				bool hasGraphicsSupport = false;
+				bool hasComputeSupport = false;
+				bool hasTransferSupport = false;
+				bool hasPresentSupport = false;
+
+				SDL_Log("- Queue [%d]", queueFamilyIndex);
+				if (qfp.queueFlags & VK_QUEUE_GRAPHICS_BIT)
+				{
+					hasGraphicsSupport = true;
+					SDL_Log("-- Graphic");
+				}
+				if (qfp.queueFlags & VK_QUEUE_COMPUTE_BIT)
+				{
+					hasComputeSupport = true;
+					SDL_Log("-- Compute");
+				}
+				if (qfp.queueFlags & VK_QUEUE_TRANSFER_BIT)
+				{
+					hasTransferSupport = true;
+					SDL_Log("-- Transfer");
+				}
+
+				VkBool32 isSurfaceSupported;
+				VK_CHECK(vkGetPhysicalDeviceSurfaceSupportKHR(physicalDevice, queueFamilyIndex, surface, &isSurfaceSupported));
+
+				if (isSurfaceSupported)
+				{
+					hasPresentSupport = true;
+					SDL_Log("-- Present");
+				}
+
+				if (hasGraphicsSupport and hasComputeSupport and hasTransferSupport and hasPresentSupport)
+				{
+					physicalDeviceInUse = physicalDevice;
+					directQueueFamilyIndex = queueFamilyIndex;
+					break;
+				}
+
+				++queueFamilyIndex;
+			}
+		}
+
+		ASSERT(physicalDeviceInUse);
+
+		float priority = 1.0f;
+		VkDeviceQueueCreateInfo queueCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.queueFamilyIndex = directQueueFamilyIndex,
+			.queueCount = 1,
+			.pQueuePriorities = &priority,
+		};
+
+		VkPhysicalDeviceVulkan13Features constexpr features13 = {
+			.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_3_FEATURES,
+			.pNext = nullptr,
+			.synchronization2 = true,
+			.dynamicRendering = true,
+		};
+
+		VkPhysicalDeviceFeatures features = {
+			.depthClamp = true,
+			.samplerAnisotropy = true,
+		};
+
+		std::array enabledDeviceExtensions = {
+			VK_KHR_SWAPCHAIN_EXTENSION_NAME
+		};
+
+		VkDeviceCreateInfo const deviceCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
+			.pNext = &features13,
+			.flags = 0,
+			.queueCreateInfoCount = 1,
+			.pQueueCreateInfos = &queueCreateInfo,
+			.enabledLayerCount = 0,
+			.ppEnabledLayerNames = nullptr,
+			.enabledExtensionCount = enabledDeviceExtensions.size(),
+			.ppEnabledExtensionNames = enabledDeviceExtensions.data(),
+			.pEnabledFeatures = &features,
+		};
+
+		VK_CHECK(vkCreateDevice(physicalDeviceInUse, &deviceCreateInfo, nullptr, &device));
+		vkGetDeviceQueue(device, directQueueFamilyIndex, 0, &directQueue);
+	}
+
+	VkFormat swapchainFormat;
+	VkExtent2D swapchainExtent = { WIDTH, HEIGHT };
+	VkSwapchainKHR swapchain;
+	std::vector<VkImage> swapchainImages;
+	std::vector<VkImageView> swapchainViews;
+	{
+		VkSurfaceCapabilitiesKHR capabilities;
+		VK_CHECK(vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physicalDeviceInUse, surface, &capabilities));
+
+		// Image Count Calculation
+		uint32_t swapchainImageCount = NUM_FRAMES;
+		if (capabilities.maxImageCount > 0)
+		{
+			swapchainImageCount = std::min(swapchainImageCount, capabilities.maxImageCount);
+		}
+		swapchainImageCount = std::max(swapchainImageCount, capabilities.minImageCount);
+
+		// Image Size calculation
+		{
+			auto [minWidth, minHeight] = capabilities.minImageExtent;
+			auto [maxWidth, maxHeight] = capabilities.maxImageExtent;
+			swapchainExtent.width = Clamp(swapchainExtent.width, minWidth, maxWidth);
+			swapchainExtent.height = Clamp(swapchainExtent.height, minHeight, maxHeight);
+		}
+
+		uint32_t surfaceFormatCount;
+		vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDeviceInUse, surface, &surfaceFormatCount, nullptr);
+		std::vector<VkSurfaceFormatKHR> surfaceFormats(surfaceFormatCount);
+		vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDeviceInUse, surface, &surfaceFormatCount, surfaceFormats.data());
+
+		VkSurfaceFormatKHR format;
+		format.format = VK_FORMAT_UNDEFINED;
+		for (auto& surfaceFormat : surfaceFormats)
+		{
+			if (surfaceFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
+			{
+				SDL_Log("Color Space SRGB Found %d", surfaceFormat.format);
+				if (surfaceFormat.format == VK_FORMAT_R8G8B8A8_SRGB) {
+					format = surfaceFormat;
+					break;
+				}
+				if (surfaceFormat.format == VK_FORMAT_B8G8R8A8_SRGB) {
+					format = surfaceFormat;
+					break;
+				}
+				if (surfaceFormat.format == VK_FORMAT_R8G8B8A8_UNORM) {
+					format = surfaceFormat;
+				}
+			}
+		}
+		ASSERT(format.format != VK_FORMAT_UNDEFINED);
+		swapchainFormat = format.format;
+
+		uint32_t presentModeCount;
+		vkGetPhysicalDeviceSurfacePresentModesKHR(physicalDeviceInUse, surface, &presentModeCount, nullptr);
+		std::vector<VkPresentModeKHR> presentModes(presentModeCount);
+		vkGetPhysicalDeviceSurfacePresentModesKHR(physicalDeviceInUse, surface, &presentModeCount, presentModes.data());
+
+		VkPresentModeKHR presentMode = VK_PRESENT_MODE_FIFO_KHR;
+		for (VkPresentModeKHR presentModeIter : presentModes)
+		{
+			if (presentModeIter == VK_PRESENT_MODE_FIFO_RELAXED_KHR)
+			{
+				presentMode = presentModeIter;
+				break;
+			}
+
+			if (presentModeIter == VK_PRESENT_MODE_MAILBOX_KHR)
+			{
+				presentMode = presentModeIter;
+			}
+		}
+
+		VkSwapchainCreateInfoKHR const swapchainCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
+			.pNext = nullptr,
+			.flags = 0,
+			.surface = surface,
+			.minImageCount = swapchainImageCount,
+			.imageFormat = format.format,
+			.imageColorSpace = format.colorSpace,
+			.imageExtent = swapchainExtent,
+			.imageArrayLayers = 1,
+			.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
+			.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE,
+			.queueFamilyIndexCount = 0,
+			.pQueueFamilyIndices = nullptr,
+			.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR,
+			.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
+			.presentMode = presentMode,
+			.clipped = false,
+			.oldSwapchain = nullptr,
+		};
+
+		VK_CHECK(vkCreateSwapchainKHR(device, &swapchainCreateInfo, nullptr, &swapchain));
+
+		swapchainImageCount = 0;
+		vkGetSwapchainImagesKHR(device, swapchain, &swapchainImageCount, nullptr);
+		swapchainImages.resize(swapchainImageCount);
+		vkGetSwapchainImagesKHR(device, swapchain, &swapchainImageCount, swapchainImages.data());
+
+		for (VkImage image : swapchainImages) {
+
+			VkImageViewCreateInfo const viewCreateInfo = {
+				.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
+				.pNext = nullptr,
+				.flags = 0,
+				.image = image,
+				.viewType = VK_IMAGE_VIEW_TYPE_2D,
+				.format = format.format,
+				.components = {
+					VK_COMPONENT_SWIZZLE_IDENTITY,
+					VK_COMPONENT_SWIZZLE_IDENTITY,
+					VK_COMPONENT_SWIZZLE_IDENTITY,
+					VK_COMPONENT_SWIZZLE_IDENTITY
+				},
+				.subresourceRange = {
+					.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+					.baseMipLevel = 0,
+					.levelCount = 1,
+					.baseArrayLayer = 0,
+					.layerCount = 1,
+				}
+			};
+
+			VkImageView view;
+			VK_CHECK(vkCreateImageView(device, &viewCreateInfo, nullptr, &view));
+
+			swapchainViews.push_back(view);
+		}
+	}
+
+	VkPipelineLayout pipelineLayout;
+	VkPipeline trianglePipeline;
+	{
+		size_t dataSize;
+		void* rawData = SDL_LoadFile("Triangle.spv", &dataSize);
+		ASSERT(dataSize % 4 == 0);
+
+		if (not rawData)
+		{
+			SDL_LogError(SDL_LOG_CATEGORY_SYSTEM, "%s", SDL_GetError());
+			abort();
+		}
+
+		auto data = static_cast<uint32_t const*>(rawData);
+
+		VkShaderModuleCreateInfo const shaderModuleCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.codeSize = dataSize,
+			.pCode = data,
+		};
+
+		VkShaderModule shaderModule;
+		VK_CHECK(vkCreateShaderModule(device, &shaderModuleCreateInfo, nullptr, &shaderModule));
+
+		VkPipelineLayoutCreateInfo constexpr pipelineLayoutCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.setLayoutCount = 0,
+			.pSetLayouts = nullptr,
+			.pushConstantRangeCount = 0,
+			.pPushConstantRanges = nullptr,
+		};
+		VK_CHECK(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
+
+		std::array stages = {
+			VkPipelineShaderStageCreateInfo{
+				.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+				.pNext = nullptr,
+				.flags = 0,
+				.stage = VK_SHADER_STAGE_VERTEX_BIT,
+				.module = shaderModule,
+				.pName = "VertexMain",
+				.pSpecializationInfo = nullptr,
+			},
+			VkPipelineShaderStageCreateInfo{
+				.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
+				.pNext = nullptr,
+				.flags = 0,
+				.stage = VK_SHADER_STAGE_FRAGMENT_BIT,
+				.module = shaderModule,
+				.pName = "FragmentMain",
+				.pSpecializationInfo = nullptr,
+			}
+		};
+
+		VkPipelineVertexInputStateCreateInfo constexpr vertexInputState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.vertexBindingDescriptionCount = 0,
+			.pVertexBindingDescriptions = nullptr,
+			.vertexAttributeDescriptionCount = 0,
+			.pVertexAttributeDescriptions = nullptr,
+		};
+
+		VkPipelineInputAssemblyStateCreateInfo constexpr inputAssembly = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
+			.primitiveRestartEnable = VK_FALSE,
+		};
+
+		VkPipelineTessellationStateCreateInfo constexpr tessellationState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.patchControlPoints = 0,
+		};
+
+		VkPipelineViewportStateCreateInfo constexpr viewportState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.viewportCount = 1,
+			.pViewports = nullptr,
+			.scissorCount = 1,
+			.pScissors = nullptr,
+		};
+
+		VkPipelineRasterizationStateCreateInfo constexpr rasterizationState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.depthClampEnable = VK_TRUE,
+			.rasterizerDiscardEnable = VK_FALSE,
+			.polygonMode = VK_POLYGON_MODE_FILL,
+			.cullMode = VK_CULL_MODE_NONE,
+			.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE,
+			.depthBiasEnable = VK_FALSE,
+			.depthBiasConstantFactor = 0.0f,
+			.depthBiasClamp = 0.0f,
+			.depthBiasSlopeFactor = 0.0f,
+			.lineWidth = 1.0f,
+		};
+
+		VkPipelineMultisampleStateCreateInfo constexpr multisampleState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT,
+			.sampleShadingEnable = VK_FALSE,
+			.minSampleShading = 0.0f,
+			.pSampleMask = nullptr,
+			.alphaToCoverageEnable = VK_FALSE,
+			.alphaToOneEnable = VK_FALSE,
+		};
+
+		VkPipelineDepthStencilStateCreateInfo constexpr depthStencilState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.depthTestEnable = VK_FALSE,
+			.depthWriteEnable = VK_FALSE,
+			.depthCompareOp = VK_COMPARE_OP_ALWAYS,
+			.depthBoundsTestEnable = VK_FALSE,
+			.stencilTestEnable = VK_FALSE,
+			.front = {},
+			.back = {},
+			.minDepthBounds = 0.0f,
+			.maxDepthBounds = 1.0f,
+		};
+
+		VkPipelineColorBlendAttachmentState constexpr colorBlendAttachmentState = {
+			.blendEnable = VK_FALSE,
+			.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA,
+			.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
+			.colorBlendOp = VK_BLEND_OP_ADD,
+			.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE,
+			.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO,
+			.alphaBlendOp = VK_BLEND_OP_ADD,
+			.colorWriteMask = VK_COLOR_COMPONENT_R_BIT
+							| VK_COLOR_COMPONENT_G_BIT
+							| VK_COLOR_COMPONENT_B_BIT
+							| VK_COLOR_COMPONENT_A_BIT,
+		};
+
+		VkPipelineColorBlendStateCreateInfo const colorBlendState = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.logicOpEnable = VK_FALSE,
+			.logicOp = VK_LOGIC_OP_COPY,
+			.attachmentCount = 1,
+			.pAttachments = &colorBlendAttachmentState,
+			.blendConstants = {0.0f, 0.0f, 0.0f, 0.0f},
+		};
+
+		std::array constexpr dynamicStates = {
+			VK_DYNAMIC_STATE_VIEWPORT,
+			VK_DYNAMIC_STATE_SCISSOR
+		};
+
+		VkPipelineDynamicStateCreateInfo const dynamicStateCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.dynamicStateCount = static_cast<uint32_t>(dynamicStates.size()),
+			.pDynamicStates = dynamicStates.data()
+		};
+
+		VkPipelineRenderingCreateInfoKHR const renderingCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR,
+			.colorAttachmentCount = 1,
+			.pColorAttachmentFormats = &swapchainFormat,
+		};
+
+		VkGraphicsPipelineCreateInfo const graphicsPipelineCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
+			.pNext = &renderingCreateInfo,
+			.flags = 0,
+			.stageCount = static_cast<uint32_t>(stages.size()),
+			.pStages = stages.data(),
+			.pVertexInputState = &vertexInputState,
+			.pInputAssemblyState = &inputAssembly,
+			.pTessellationState = &tessellationState,
+			.pViewportState = &viewportState,
+			.pRasterizationState = &rasterizationState,
+			.pMultisampleState = &multisampleState,
+			.pDepthStencilState = &depthStencilState,
+			.pColorBlendState = &colorBlendState,
+			.pDynamicState = &dynamicStateCreateInfo,
+			.layout = pipelineLayout,
+			.renderPass = nullptr,
+			.subpass = 0,
+			.basePipelineHandle = nullptr,
+			.basePipelineIndex = 0,
+		};
+
+		VK_CHECK(vkCreateGraphicsPipelines(device, nullptr, 1, &graphicsPipelineCreateInfo, nullptr, &trianglePipeline));
+
+		vkDestroyShaderModule(device, shaderModule, nullptr);
+
+		SDL_free(rawData);
+	}
+
+	// Create 1 command pool per frame.
+	std::array<VkCommandPool, NUM_FRAMES> commandPools;
+	{
+		VkCommandPoolCreateInfo const commandPoolCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = VK_COMMAND_POOL_CREATE_TRANSIENT_BIT,
+			.queueFamilyIndex = directQueueFamilyIndex,
+		};
+		for (auto& commandPool : commandPools) {
+			VK_CHECK(vkCreateCommandPool(device, &commandPoolCreateInfo, nullptr, &commandPool));
+		}
+	}
+
+	std::array<VkCommandBuffer, NUM_FRAMES> commandBuffers;
+	{
+		uint32_t index = 0;
+		for (auto& commandPool : commandPools) {
+			VkCommandBufferAllocateInfo const commandBufferAllocateInfo = {
+				.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
+				.pNext = nullptr,
+				.commandPool = commandPool,
+				.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
+				.commandBufferCount = 1,
+			};
+			VK_CHECK(vkAllocateCommandBuffers(device, &commandBufferAllocateInfo, &commandBuffers[index]));
+
+			++index;
+		}
+	}
+
+	std::array<VkSemaphore, NUM_FRAMES> imageAcquiredSemaphores;
+	std::array<VkSemaphore, NUM_FRAMES> renderFinishedSemaphores;
+	std::array<VkFence, NUM_FRAMES> frameInUseFences;
+	{
+		VkSemaphoreCreateInfo constexpr semaphoreCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = 0
+		};
+		for (auto& semaphore : imageAcquiredSemaphores) {
+			VK_CHECK(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &semaphore));
+		}
+		for (auto& semaphore : renderFinishedSemaphores) {
+			VK_CHECK(vkCreateSemaphore(device, &semaphoreCreateInfo, nullptr, &semaphore));
+		}
+
+		VkFenceCreateInfo constexpr fenceCreateInfo = {
+			.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO,
+			.pNext = nullptr,
+			.flags = VK_FENCE_CREATE_SIGNALED_BIT,
+		};
+		for (auto& fence : frameInUseFences) {
+			VK_CHECK(vkCreateFence(device, &fenceCreateInfo, nullptr, &fence));
+		}
+	}
+
+	VkImageMemoryBarrier2 acquireToRenderBarrier = {
+		.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER_2,
+		.pNext = nullptr,
+		.srcStageMask = VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT,
+		.srcAccessMask = VK_ACCESS_2_COLOR_ATTACHMENT_WRITE_BIT,
+		.dstStageMask = VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT,
+		.dstAccessMask = VK_ACCESS_2_COLOR_ATTACHMENT_WRITE_BIT,
+		.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED,
+		.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
+		.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.subresourceRange = {
+			.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+			.baseMipLevel = 0,
+			.levelCount = 1,
+			.baseArrayLayer = 0,
+			.layerCount = 1,
+		}
+	};
+	VkDependencyInfo acquireToRenderDependency = {
+		.sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
+		.pNext = nullptr,
+		.dependencyFlags = 0,
+		.memoryBarrierCount = 0,
+		.pMemoryBarriers = nullptr,
+		.bufferMemoryBarrierCount = 0,
+		.pBufferMemoryBarriers = nullptr,
+		.imageMemoryBarrierCount = 1,
+		.pImageMemoryBarriers = &acquireToRenderBarrier,
+	};
+
+	VkImageMemoryBarrier2 renderToPresentBarrier = {
+		.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER_2,
+		.pNext = nullptr,
+		.srcStageMask = VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT,
+		.srcAccessMask = VK_ACCESS_2_COLOR_ATTACHMENT_WRITE_BIT,
+		.dstStageMask = VK_PIPELINE_STAGE_2_BOTTOM_OF_PIPE_BIT,
+		.dstAccessMask = VK_ACCESS_2_NONE,
+		.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
+		.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
+		.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.subresourceRange = {
+			.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+			.baseMipLevel = 0,
+			.levelCount = 1,
+			.baseArrayLayer = 0,
+			.layerCount = 1,
+		}
+	};
+	VkDependencyInfo renderToPresentDependency = {
+		.sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
+		.pNext = nullptr,
+		.dependencyFlags = 0,
+		.memoryBarrierCount = 0,
+		.pMemoryBarriers = nullptr,
+		.bufferMemoryBarrierCount = 0,
+		.pBufferMemoryBarriers = nullptr,
+		.imageMemoryBarrierCount = 1,
+		.pImageMemoryBarriers = &renderToPresentBarrier,
+	};
+
+	uint32_t frameIndex = 0;
 	bool isRunning = true;
 	while (isRunning)
 	{
 		SDL_PumpEvents();
 
 		SDL_Event event;
-		while(SDL_PollEvent(&event))
+		while (SDL_PollEvent(&event))
 		{
 			switch (event.type)
 			{
@@ -72,7 +674,157 @@ int main()
 				break;
 			}
 		}
+
+		VkFence fence = frameInUseFences[frameIndex];
+
+		VK_CHECK(vkWaitForFences(device, 1, &fence, VK_TRUE, std::numeric_limits<uint32_t>::max()));
+		// All resources of frame 'frameIndex' are free.
+
+		VkSemaphore imageAcquiredSemaphore = imageAcquiredSemaphores[frameIndex];
+
+		uint32_t currentImageIndex;
+		VK_CHECK(vkAcquireNextImageKHR(device, swapchain, std::numeric_limits<uint32_t>::max(), imageAcquiredSemaphore, nullptr, &currentImageIndex));
+
+		VK_CHECK(vkResetFences(device, 1, &fence));
+		VK_CHECK(vkResetCommandPool(device, commandPools[frameIndex], 0));
+
+		acquireToRenderBarrier.image = swapchainImages[currentImageIndex];
+		renderToPresentBarrier.image = swapchainImages[currentImageIndex];
+
+		VkCommandBuffer cmd = commandBuffers[frameIndex];
+
+		VkCommandBufferBeginInfo constexpr beginInfo = {
+			.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+			.pNext = nullptr,
+			.flags = 0,
+			.pInheritanceInfo = nullptr,
+		};
+
+		VkClearColorValue constexpr static BLACK_CLEAR = {
+			.float32 = { 0.0f, 0.0f, 0.0f, 1.0f },
+		};
+
+		VK_CHECK(vkBeginCommandBuffer(cmd, &beginInfo));
+		{
+			VkRenderingAttachmentInfo const attachmentInfo = {
+				.sType = VK_STRUCTURE_TYPE_RENDERING_ATTACHMENT_INFO,
+				.pNext = nullptr,
+				.imageView = swapchainViews[currentImageIndex],
+				.imageLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
+				.resolveMode = VK_RESOLVE_MODE_NONE,
+				.resolveImageView = nullptr,
+				.resolveImageLayout = VK_IMAGE_LAYOUT_UNDEFINED,
+				.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR,
+				.storeOp = VK_ATTACHMENT_STORE_OP_STORE,
+				.clearValue = {.color = BLACK_CLEAR},
+			};
+
+			VkRenderingInfo renderingInfo = {
+				.sType = VK_STRUCTURE_TYPE_RENDERING_INFO,
+				.pNext = nullptr,
+				.flags = 0,
+				.renderArea = {.offset = {0,0}, .extent = swapchainExtent},
+				.layerCount = 1,
+				.viewMask = 0,
+				.colorAttachmentCount = 1,
+				.pColorAttachments = &attachmentInfo,
+				.pDepthAttachment = nullptr,
+				.pStencilAttachment = nullptr,
+			};
+
+			vkCmdPipelineBarrier2(cmd, &acquireToRenderDependency);
+			vkCmdBeginRendering(cmd, &renderingInfo);
+			{
+				VkViewport viewport = {
+					.x = 0,
+					.y = static_cast<float>(swapchainExtent.height),
+					.width = static_cast<float>(swapchainExtent.width),
+					.height = -static_cast<float>(swapchainExtent.height),
+					.minDepth = 0.0f,
+					.maxDepth = 1.0f,
+				};
+				vkCmdSetViewport(cmd, 0, 1, &viewport);
+				VkRect2D scissor = {
+					.offset = {0, 0},
+					.extent = swapchainExtent,
+				};
+				vkCmdSetScissor(cmd, 0, 1, &scissor);
+
+				// Render Something?
+				vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, trianglePipeline);
+				vkCmdDraw(cmd, 3, 1, 0, 0);
+
 			}
+			vkCmdEndRendering(cmd);
+			vkCmdPipelineBarrier2(cmd, &renderToPresentDependency);
+		}
+		VK_CHECK(vkEndCommandBuffer(cmd));
+
+		VkSemaphore renderingFinishedSemaphore = renderFinishedSemaphores[frameIndex];
+
+		VkPipelineStageFlags stageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+		VkSubmitInfo const submitInfo = {
+			.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+			.pNext = nullptr,
+			.waitSemaphoreCount = 1,
+			.pWaitSemaphores = &imageAcquiredSemaphore,
+			.pWaitDstStageMask = &stageMask,
+			.commandBufferCount = 1,
+			.pCommandBuffers = &cmd,
+			.signalSemaphoreCount = 1,
+			.pSignalSemaphores = &renderingFinishedSemaphore,
+		};
+		VK_CHECK(vkQueueSubmit(directQueue, 1, &submitInfo, fence));
+
+		VkPresentInfoKHR const presentInfo = {
+			.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR,
+			.pNext = nullptr,
+			.waitSemaphoreCount = 1,
+			.pWaitSemaphores = &renderingFinishedSemaphore,
+			.swapchainCount = 1,
+			.pSwapchains = &swapchain,
+			.pImageIndices = &currentImageIndex,
+			.pResults = nullptr,
+		};
+
+		VK_CHECK(vkQueuePresentKHR(directQueue, &presentInfo));
+
+		frameIndex = (frameIndex + 1) % NUM_FRAMES;
+	}
+
+	VK_CHECK(vkDeviceWaitIdle(device));
+
+	for (VkFence fence : frameInUseFences)
+	{
+		vkDestroyFence(device, fence, nullptr);
+	}
+
+	for (VkSemaphore semaphore : imageAcquiredSemaphores)
+	{
+		vkDestroySemaphore(device, semaphore, nullptr);
+	}
+
+	for (VkSemaphore semaphore : renderFinishedSemaphores)
+	{
+		vkDestroySemaphore(device, semaphore, nullptr);
+	}
+
+	for (VkCommandPool commandPool : commandPools)
+	{
+		vkDestroyCommandPool(device, commandPool, nullptr);
+	}
+
+	for (VkImageView view : swapchainViews)
+	{
+		vkDestroyImageView(device, view, nullptr);
+	}
+
+	vkDestroyPipeline(device, trianglePipeline, nullptr);
+	vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
+
+	vkDestroySwapchainKHR(device, swapchain, nullptr);
+
+	vkDestroyDevice(device, nullptr);
 
 	SDL_Vulkan_DestroySurface(instance, surface, nullptr);
 
@@ -80,8 +832,6 @@ int main()
 
 	volkFinalize();
 
-	//Blaze blaze;
-
 	SDL_DestroyWindow(window);
 
 	SDL_Quit();

Blaze.vcxproj

@@ -157,6 +157,19 @@
       </SubType>
     </None>
     <None Include="README.md" />
+    <CustomBuild Include="Triangle.slang">
+      <FileType>Document</FileType>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">slangc %(FullPath) -profile sm_6_6 -target spirv -o %(Filename).spv</Command>
+      <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(Filename).spv</Outputs>
+      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">slangc %(FullPath) -profile sm_6_6 -target spirv -o %(Filename).spv</Command>
+      <Outputs Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(Filename).spv</Outputs>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</ExcludedFromBuild>
+      <TreatOutputAsContent Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</TreatOutputAsContent>
+      <TreatOutputAsContent Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</TreatOutputAsContent>
+      <Message Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Compiling slang shader</Message>
+      <Message Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Compiling slang shader</Message>
+    </CustomBuild>
     <None Include="vcpkg-configuration.json" />
     <None Include="vcpkg.json" />
   </ItemGroup>

Blaze.vcxproj.filters

@@ -13,6 +13,9 @@
       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
       <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
     </Filter>
+    <Filter Include="Shader Files">
+      <UniqueIdentifier>{672b8ec5-258c-4a21-bbf7-66d3b1185fe9}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Blaze.cpp">
@@ -36,4 +39,9 @@
       <Filter>Resource Files</Filter>
     </None>
   </ItemGroup>
+  <ItemGroup>
+    <CustomBuild Include="Triangle.slang">
+      <Filter>Shader Files</Filter>
+    </CustomBuild>
+  </ItemGroup>
 </Project>

PLAN.md

@@ -6,15 +6,17 @@
 	- [X] compile flags etc.
 	- [X] SDL3
 	- [X] volk
-- [ ] Create a Triangle
+- [X] Clear Screen
 	- [X] Create Window
 	- [X] Load instance
 	- [X] Create surface
-	- [ ] Choose physical device
+	- [X] Choose physical device
-	- [ ] Create logical device
+	- [X] Create logical device
-	- [ ] Create swapchain
+	- [X] Create swapchain
-	- [ ] Create pipeline
+	- [X] Clear Render Attachments
-	- [ ] Draw
+- [X] Create a Triangle
+	- [X] Create pipeline
+	- [X] Draw
 - [ ] Create a Box
 	- [ ] Create Vertex buffer
 	- [ ] Load texture

Triangle.slang

@@ -0,0 +1,34 @@
+
+const static float4 vertexPos[] = {
+    float4(0.0f, 0.5f, 0.5f, 1.0f),
+    float4(-0.5f, -0.5f, 0.5f, 1.0f),
+    float4(0.5f, -0.5f, 0.5f, 1.0f),
+};
+const static float4 vertexColors[] = {
+    float4(1.0f, 0.0f, 0.0f, 1.0f),
+    float4(0.0f, 1.0f, 0.0f, 1.0f),
+    float4(0.0f, 0.0f, 1.0f, 1.0f),
+};
+
+struct VertexOut {
+    float4 outPosition : SV_Position;
+    float4 vertexColor : CoarseColor;
+};
+
+[shader("vertex")]
+VertexOut VertexMain(
+    uint vertexId: SV_VertexID
+) {
+    VertexOut output;
+    output.outPosition = vertexPos[vertexId];
+    output.vertexColor = vertexColors[vertexId];
+    return output;
+}
+
+[shader("fragment")]
+float4 FragmentMain(
+    float4 interpolatedColors: CoarseColor,
+) : SV_Target0 {
+    return float4(interpolatedColors.rgb, 1.0f);
+}
+

vcpkg.json

@@ -2,6 +2,7 @@
   "dependencies": [
     "fmt",
     "volk",
+    "shader-slang",
     {
       "name": "sdl3",
       "features": [ "vulkan" ]