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Learning Vulkan

Learning Vulkan

This is the code repository for Learning Vulkan, published by Packt. It contains all the supporting project files necessary to work through the book from start to finish.

About the Book

Vulkan, the next generation graphics and compute API, is the latest offering by Khronos. This API is the successor of OpenGL and in contrast offers greatflexibility and high performance capabilities to control modern GPU devices. With this book, you'll get great insights into the working of Vulkan and how you can make stunning graphics run with minimum hardware requirements.

Instructions and Navigations

All of the code is organized into folders. Each folder starts with a number followed by the application name. For example, Chapter02.

The code will look like the following:

foreach layerProperty{
	VkExtensionProperties *instanceExtensions;
	res = vkEnumerateInstanceExtensionProperties(layer_name,
	&instanceExtensionCount, instanceExtensions);
}

Please follow through the hardware and software requirements provided with this book. The reader must have a decent knowledge of C/C++ programming. Coding experience is required. Click here to get the colored images.

Preface

Chapter 1, Getting Started with the NextGen 3D Graphics API

This chapter begins with the fundamentals of the Vulkan API and provides an overview of all its distinct features compared to its predecessor OpenGL API. This chapter will cover the basics, concepts, application model, and technical jargon used in Vulkan programming that is extremely helpful for first-time learners. You will also walk through the Vulkan programming model and see an outline of each module and its role.

Chapter 2, Your First Vulkan Pseudo Program

This chapter will help you program a simple Hello World program using a pseudocode approach. This will help the beginners to get a flavor of Vulkan programming and learn the step-by-step process to build their first Vulkan application. You will also learn how to install the necessary software and the SDK.

Chapter 3, Shaking Hands with the Device

Will help you to set up the programming environment to start with building your very first Vulkan example. You will create the Vulkan instance and initialize the program. You will connect with the physical hardware device, explore different types of queues exposed by it, and query various available layers and extensions. This chapter will provide a detailed understanding of the device queue and queue family concept and its relation with logical devices.

Chapter 4, Debugging in Vulkan

This chapter describes how to perform debugging in a Vulkan application. Vulkan allows debugging through validation layers. In this chapter, we will discuss the role of each validation layer and program a simple example to understand the debugging in action. In addition, we will also query the layer extensions to add extra features that may not be a part of the Vulkan specifications.

Chapter 5, Command Buffer and Memory Management in Vulkan

As we approach in the middle, we will thoroughly discuss and implement command buffers in Vulkan. You will understand the role of the command pool and will learn how to record command buffers in Vulkan. The second half of the chapter will cover memory management in Vulkan; you will dig through device memory, and learn methods to allocate or deallocate GPU memory and understand the mapping of CPU and GPU memory.

Chapter 6, Allocating Image Resources and Building a Swapchain with WSI

Here we will shed light on image resources and discuss memory management concepts, such as image creation, allocation, binding, and mapping. Using this, we will create a depth image for depth testing. This chapter will also introduce the WSI swapchain, which is used for presentation and renders the drawing output onscreen. We will acquire the swapchain color images and create image views that will be used for drawing primitives.

Chapter 7, Buffer Resource, Render Pass, Frame Buffer, and Shaders with SPIR-V

This chapter will discuss the buffer resource and its usage for implementing the vertex buffer containing a drawing object’s geometry information. This chapter will give a detailed introduction to using the Render Pass to define a single unit of work specifying drawing operations using various attachments and subpasses. We will use Render Pass and implement frame buffers in Vulkan and demonstrate simple example to clear the background. As the chapter closes, we will implement our first shader in Vulkan using SPIR-V; we learn about SDK tools that convert GLSL into SPIR-V intermediate representation.

Chapter 8, Pipelines and Pipeline State Management

Will introduce Vulkan’s compute and graphics pipeline. This chapter will provide an overview of the graphic pipeline flow and cover the role of various modules from start to end. We will discuss pipeline state objects, pipeline cache objects, and pipeline layouts. This chapter will cover all the pipeline states thoroughly, also covering dynamics states, input assembly with drawing primitives, rasterization, blending, viewport, depth/stencil testing, and multisampling. We will use these state's objects and implement the graphics pipeline.

Chapter 9, Drawing Objects

In this chapter, we will thoroughly understand the process of drawing objects in Vulkan. We will record and execute the drawing object command buffers. The recording associates the Render Pass, framebuffer, and pipeline together along with the viewport and geometry data. The command buffer execution involves the submission of the command buffer to the device queue and presenting the drawn swapchain image to the presentation engine. We will also discuss the Vulkan synchronization mechanisms and understand fences, semaphore, and memory barriers. Besides, we will also cover drawing APIs and demonstrate it through some easy-to-follow examples.

Chapter 10, Descriptors and Push Constant

This chapter describes, how to update shader resources from a Vulkan application using descriptors and push constants. In descriptors, we will discuss and create descriptor pools and descriptor set layout. You will learn how to use the pipeline layouts and use the descriptors to update the buffer resource residing on the device memory and render the updated geometry on screen. Unlike descriptors, push constant does not use the command buffer and provides an optimized path to update the resources. You will implement a small example to understand push constants in action.

Chapter 11, Drawing Textures

Will bring realism to our rendered 3D drawing object by adding textures. You will learn how to create the image resource and apply samplers to it. You will also learn how to apply textures using linear and optimal tiling. In optimal tiling implementation, you will learn to transfer buffer and image memory through staging.

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