Adjust accordingly to your phone (I was a tad lazy to read in the values from the system itself). The Cube OpenGL ES 2.0 example shows how to manually rotate a textured 3D cube with user input, using OpenGL ES 2.0 with Qt. I have a Samsung Captivate(Samsung Galaxy S) which has a screen resolution of 800 X 480, so I use those values as the height and width of my texture. In terms of graphics APIs, the GLES2 backend maps to OpenGL 2.1 on desktop, OpenGL ES 2.0 on mobile and WebGL 1.0 on the web. The texture is going to be a simple quad which will then be displayed on the full screen. We are going to render the same objects as in the previous tutorial (where you can choose between gouraud/phong/normal mapping shaders). With OpenGL ES 2.0 framework, you can make the most use of the device’s GPU, and you can build graphics that are limited only by your imagination. ![]() Rendering to a texture is important when it comes to various graphics techniques and algorithms (Shadow Mapping, cube map generation, Deferred Shading, etc.) So this quick tutorial will demonstrate how to setup a texture for rendering (and then how to display that texture on screen). ![]() I’ll first link to the apk, source code and the repository: ![]() NOTE: This tutorial builds up on my previous tutorial on how to setup OpenGL ES 2.0 on Android.
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