Visual Studio, Windows, C++, OpenGL ES, GLFW, GLAD Using OpenGL ES on the PC is less straight forward than on Android. The reason is that GL ES is intended for mobile devices, NOT for desktops. Fortunately, solutions exist. OpenGL producers strongly advise to use a window toolkit (GLFW) and an OpenGL loading libraries (GLAD). Well, […]
Android Studio, Native Activity, Game Activity, C++, OpenGL ES Default Android languages are Java and Kotlin. In order to use C++ we'll need so called NativeActivity. Start Android Studio. Pick New Project. Scroll down, select Game Activity (C++) which is a direct descendant of NativeActivity and shares a similar architecture. It's a Jetpack library designed […]
Visual Studio, Android Studio, project basic structure First step is to prepare a placeholder for our project. *VERY IMPORTANT part missing from most guides is how to organize your folders. So, first - root folder, where we’ll keep all our projects plus all reusable stuff, such as graphics engine, etc. I’ll call it “CPP” (for C++). […]
GameDev, 3D, cross-platform, C++, Android, Windows, OpenGL ES 3.2. This blog turned out to practically step-by-step instruction (tutorial) how to write cross-platform 3D app (game) from scratch. To write own game is my old dream. Now I know how to do it right. Have a few ideas in mind what it could be, haven't decided […]
DOWNLOAD DEMO (Windows) With such handy modeling toolkit, just couldn't resist the temptation to draw Great Gatsby's car. Fans of Elegance Age, Art Deco and Steampunk will understand. Had to expand the functionality of ModelLoader and ModelBuilder a little, and here is the result: It's 1929 Duesenberg J Sport Phaeton (just in case). Or in […]
Ok, time for a new GitHub repo. The topic of this chapter is Models variability. Of course, 1 single car model isn't enough for the Project. We'll need more. At least - in different colors. Creating a set of practically identical models with just different colors looks kind of wasteful. Instead, we can randomly customize […]
Suddenly noticed that while running, memory consumption is slowly but steadily creeping up: which can only mean one thing: Well, then we need to find (detect) and fix it (or them). Some sort of memory leak detection tool would help. Visual Studio offers it's own set of "CRT debug heap functions". However, I was unable […]
Another (maybe the most) critical component of a realistic image is SHADOWS. The common approach is "shadow mapping". The algorithm consists of two passes. First, the scene is rendered from the point of view of the light source. Only the depth of each fragment/pixel is calculated. The scene is then rendered as usual, but with […]
Next step is to replace these square models by something more actual. For example, by this: I picked specifically this model for it's challengingly curved shapes. Just in case, this is 1935 Duesenberg SSJ Speedster, 1:64 scale model. In order to implement that, we'll need to extend our ModelBuilder and ModelLoader functionality. Also we'll need […]
Now we are ready for more complex models, consisting of several elements with individual behavior. For example - car, where body will be a parent (root) element, and wheels - child elements. For both, body and wheel, we'll need separate model descriptors and separate classes, which will handle their behaviors. 1. In Windows File Explorer […]