OpenGL Shader (4) shader 3D Graphics - Coordinate Transformation, Rotation, Virtual Trackball, VBO, IBO

• Explains 3D graphics programming with OpenGL Shader Language (GLSL) .
• Implement the core functions of 3D graphics used in game engines directly with GLSL programs .

Q. What are the reviews of the paid lectures?

Paid courses are being released sequentially, from (1) to (7), so course reviews are scattered and not yet public. The paid courses currently have the following reviews:

• I think this is the most well-organized OpenGL lecture I've ever heard.
• The explanation was detailed and helpful. I had a hard time learning OpenGL, but it was very helpful.
• (Formulas related to 3D graphics) The formulas themselves are not difficult, but the process of deriving them is not easy to understand. Thank you for explaining them in detail, which helped me understand.

Q. What is the relationship with WebGL?

WebGL is the JavaScript version of OpenGL, which is explained in this lecture.

OpenGL was originally developed for C/C++, and this course will use C/C++ as the foundation for its explanation. Later, with the advent of HTML5, OpenGL was adopted as the standard for 3D graphics for the web. WebGL is a grammar change that allows OpenGL to be used in JavaScript.

If you're familiar with JavaScript, you'll have no trouble applying the basic theory and explanations based on C/C++. The difficult part of studying WebGL isn't the grammar, but rather the functions, internal structure, mathematical theory, and optical calculations of OpenGL/WebGL. Regardless of whether you're studying OpenGL or WebGL, you need to learn the same theory, and this lecture explains it well. Some people actually study WebGL while taking this lecture.

Q. What is the relationship with Vulkan?

In terms of 3D graphics libraries, Vulkan came after OpenGL. However, OpenGL was geared towards application programmers, while Vulkan is geared towards some system programmers. Therefore, in many cases, Vulkan's learning curve is significantly higher.

In many cases, if you don't have extensive experience with 3D graphics, we recommend learning OpenGL before Vulkan, transitioning to Vulkan only when you're fully prepared. In fact, even in foreign countries, Vulkan courses are rarely offered for beginners, rather than as professional courses.

The Vulkan course will be offered as an advanced course for experts after this OpenGL course is completed.

Q. What hardware specifications are required for the training?

We'll be practicing with OpenGL 3.3 or higher. Any desktop or laptop within the past five years should be fine for this exercise. (A graphics card or chip equipped with an NVIDIA or AMD graphics card is recommended. At the very least, recent chips from the Intel GMA series are recommended.)

However, it is necessary to create a development environment by installing the necessary development software .

Q. Do I need to install software for the practice environment?

You need to install a graphics driver that supports OpenGL 3.3 or higher, as well as public libraries like GLFW, GLEW, and GLM. While the lecture explains how to install these libraries, it's not as simple as clicking an exe file. You'll need to install the necessary libraries in the DLL folder on Windows and the include and lib folders of the Visual Studio compiler . (In Linux, you can install them using the apt command.)

Q. Is there a reason for setting a course deadline?

The reason for setting a deadline for the course is that, given the nature of the computer field, the course content is likely to become outdated after that amount of time.
By then, I'll be back with a new lecture. 😄

Q. Are there subtitles in the video?

While some class videos include subtitles, most do not. Subtitles may be replaced without notice if new subtitles are produced.

• This lecture is the fourth lecture in the "OpenGL Shader 3D Graphics Programming" series.
• The lecture is based on Windows 10/11 operating system + Visual Studio 2019/2022 C++ compiler .
• We provide the PPT used in the lecture as a PDF file according to the learning content.
• Some of the illustrations and photos used in the lecture videos and PDF files are not in the public domain but are protected by separate copyrights. In these cases, the knowledge sharer obtained limited permission from the copyright holder for use. Therefore, if others wish to use these images, they must obtain permission from the original copyright holder. Please be aware of this.
• The Korean font used in the PDF is "Bon Gothic" Noto Sans KR , and the English fonts are Source Sans Pro and Source Serif Pro . You can download both for free through the links.