1. To use textures, we first need to load them into the application. Using an image-loading library that supports several popular formats looks like a good solution. I like stb_image.h by Sean Barrett. Especially I love that it's a single h-file, not a lib or dll. You can download it here. Save it in C:\CPP\engine […]
Finally, shaders! Let's start from the easiest one, just flat uniform color, which we will pass to the shader as an input, along with mesh data (in our sample - a triangle). Shaders use GLSL (OpenGL Shading Language with syntax similar to C). GLSL is executed directly by the graphics pipeline. The executable shader program […]
Though we can access and use Android assets directly (as we just did in previous chapter). we still have to keep in mind, that assets are NOT files in the usual sense. The difference: Assets can't be accessed via common files tools. You have to use special Assets interface. They are read-only. You can't modify […]
The idea is the same as in previous chapter - to place the data files within the reach of the executable. However, in Android's case we are dealing NOT with the "executable", but with APK. Besides, we have to deliver data files not just to different folder, but to different device. The only "transport" (known […]
Now we are ready to start writing real (practically usable) shaders. Right now we have 2 sample (1 vertex and 1 fragment) shaders, that are hard-coded in TheGame.cpp. Obviously, not the best solution, but for simplicity's sake was quite reasonable. In our turn, we want to keep our shaders outside of the executable. 1. In […]
Now we will try to run TheGame spinning triangle sample on Android. 1. Start Visual Studio, open C:\CPP\a999hello\p_android\p_android.sln solution. 2. Under p_android.NativeActivity project add “xTheGame” filter: Right-click on p_android.NativeActivity project -> Add -> New Filter. Name - xTheGame Under xTheGame add Existing Item: Right-click on xTheGame -> Add -> Existing Item, Navigate to C:\CPP\a999hello Files […]
In this chapter we will dissect our GLFW spinning triangle sample. We will move “game” implementation into a separate class, which we will reuse later in Android version. It will be triangle rendering related code. In order to make it platform-independent we will separate it from platform-specific calls. All environment related code, such as window […]
Now, having OpenGL ES projects for 2 different platforms, we can see what is common and what is different. Common is generic structure: Creating GL context, initializing data, main loop with frames rendering, exit. GL calls (Thank God!) look similar too. The difference is in program and GL initialization, in GL-related includes (gl/egl on Android […]
1. Icons in the top menu WordPress Dashboard->Appearance->Menus allows to manage menus, but in text format only. The only fields available are "URL" and "Navigation Label" in a text format. However, though WordPress itself doesn't offer image options for the menu, CSS does. Professional advice from Artem Demin: It is possible to access menu item […]
Since this website is basically a technical blog, it has a bunch of code samples, that looked by default like this (simply pink font): I hoped to find a CSS style/class with a firm intension to customize it to the ground (not only font color), but again, turned out that professionals do it differently. Professional […]