Game Engine Gems 2 is the second book in a series from editor Eric Lengyel, one of the premiere game engine developers in the scene. I read the first book and I will say this second volume is even better in my opinion. There are a vast number of topics covered, and I found the depth in most of them to be thorough, considering that this is a gem collection and not a full book. Inside there are 31 chapters, each from a different author, and a lot of ground is covered. Chapters include: bounding boxes, volumetric clouds, night vision, deferred shading, OpenGL tricks, stereoRead More →

I’ve always been a big fan of Eric Lengyel, from both his work on the C4 Engine (and now the new Tombstone Engine) and his previous math book, Mathematics for 3D Game Programming and Computer Graphics, which is on it’s 3rd edition and is one of the definitive texts in the genre. This latest book, Foundations of Game Engine Development, Volume 1: Mathematics, I feel does it again and is well worth reading. The text, which clocks in at around 200 pages (short for a technical book) actually has a decent amount of information crammed into those pages. Lengyel breaks it up into 4 chapters, each focusing on a different aspect.Read More →

Right here is a book with a clearly defined goal and an excellent execution. Learning C++ by Creating Games with UE4 by William Sherif takes you on a journey from being a total blank in C++ to coding some basic features of a 3D game. Even though I have been coding in C++ for years, I still enjoy reading novice level texts as sometimes they can teach you a new way of thinking about familiar problems. For me, it’s also important to have good book recommendations (especially for people starting out), and I actually discovered this book from a member of the Unreal Engine community lookingRead More →

This is a book with a solid focus, and I feel like it accomplishes it’s goal nicely. Basically what Maya Studio Projects is about is creating environment objects and props for games (as the title implies). There are 9 chapters, and each one chooses a different object to model. McKinley is very detailed in his explanation, and really shows each and every step needed to follow along. Some of the objects modeled include walls and floors, foliage, weapons, vehicles, buildings, lamps, and a simple object animation. Supposedly there is a DVD companion, but I got the Kindle e-book and usually don’t bother with looking at the discs. WhatRead More →

  Today I’d like to unveil what I’ve been working on for about 2 weeks: Pong in Unreal Engine 4. Most of that time was spent reading documentation and watching tutorial videos just to figure out the basics. There is actually a *lot* of good material out there for Unreal Engine 4, the docs have been helpful and there are plenty of videos. Disappointingly, there are barely any books out there for the engine, but I’m sure that will change quickly. Pretty much anyone will tell you, when you are learning to develop games (or switching to a new engine/platform), the best thing to doRead More →

So it comes with great reluctance but I think I will have to suspend development on my 3D game engine, at least for the near future. Surely this will be a disappointment to anyone following the progress and I did not make the decision lightly. After spending some time thinking about it, I think it’s the right move. It’s just really hard to justify the amount of time and effort put into this when there are much better solutions available off-the-shelf. In the little less than 2 years I’ve worked on this project, I think I have made decent strides. Honestly, I was not working on itRead More →

  It’s been some time since the last 3D engine update, but I’m still sticking with it. Currently I am working on getting a physics engine implemented. The video you see above is the first glimpse of this custom physics engine. Obviously it’s ultra basic right now, but it’s a start. The algorithm is based on a verlet integrator, and the code is running using DirectCompute on the GPU. To be honest, it’s pretty hacked together right now, and the bounds/bouncing behavior is hard-coded. But, hey, it’s something! I also tweaked the style of the demo to more closely align with other demos from researchersRead More →

While I implemented frustum culling a little while ago, I never actually coded a proper bounding volume. For the  bounding test I was using a sphere, but I just set the radius to some hard-coded value. This was fine when I just had a bunch of similar sized cubes on screen, however it broke apart once I started getting varied models imported. This week I decided to do something about it. After a quick Google search for bounding spheres, I ended up on Wikipedia. There was some good information there regarding minimal bounding spheres (also known as smallest enclosing ball or minimal enclosing ball), andRead More →

  After struggling for a bit with the shadow mapping implementation, I finally have something presentable. I followed a tutorial from Microsoft and thought I understood what was happening. However, it required a lot of changes in the rendering code and it took a little while to get things working. Even once it was somewhat functional, I still had some issues with what they call shadow acne. It seemed really bad on the self-shadowing side of objects. I tried tweaking all the values I could (i.e. the bias in the shader), but I was not able to get it to look right. Finally I justRead More →

  After a few days of hacking away at the code, I’ve got a new video up. In this update I have added normal mapping and specular lighting. I did have a few set-backs while working on the shaders, and it was made even more difficult since I was basically “flying blind” without a debugger. It seems that the Express version of Visual Studio does not support shader debugging, and neither does Nvidia’s debugger tool. Very sad, and I may (at some point) have to upgrade to the Pro version. I’ll probably hold out for a little bit, and I did end up figuring theRead More →