https://www.learnopengles.com/tag/dalvik/Recent content in Dalvik on Learn OpenGL ESHugoen-USThu, 03 Sep 2026 18:13:44 +0000https://www.learnopengles.com/a-performance-comparison-redux-java-c-and-renderscript-on-the-nexus-5/Thu, 10 Jul 2014 15:04:44 +0000https://www.learnopengles.com/a-performance-comparison-redux-java-c-and-renderscript-on-the-nexus-5/In my previous post on this topic, A performance comparison between Java and C on the Nexus 5, I compared the performance of an audio low-pass filter in Java and C. The results were clear: The C version outperformed, and by a significant amount. This result brought more attention to the post than I was expecting; some of …https://www.learnopengles.com/a-performance-comparison-between-java-and-c-on-the-nexus-5/Tue, 08 Apr 2014 01:31:32 +0000https://www.learnopengles.com/a-performance-comparison-between-java-and-c-on-the-nexus-5/Android phones have been growing ever more powerful with time, with the Nexus 5 sporting a quad-core 2.3 GHz Krait 400; this is a very powerful CPU for a mobile phone. With most Android apps being written in Java, does Java allow us to access all of that power? Or, put another way, is Java …https://www.learnopengles.com/how-powerful-is-your-nexus-7/Thu, 03 Apr 2014 18:09:46 +0000https://www.learnopengles.com/how-powerful-is-your-nexus-7/The following post is based on a paper generously contributed by Jerome Huck, a senior aerospace/defence engineer, scientist, and author. A link to figures and the code can be found at the bottom of this post. So you want to run some heavy-duty algorithms on your Android device, and you’re wondering what is the best environment …https://www.learnopengles.com/android-lesson-eight-an-introduction-to-index-buffer-objects-ibos/Thu, 10 May 2012 20:18:12 +0000https://www.learnopengles.com/android-lesson-eight-an-introduction-to-index-buffer-objects-ibos/In our last lesson, we learned how to use vertex buffer objects on Android. We learned about the difference between client-side memory and GPU-dedicated memory, and the difference between storing texture, position and normal data in separate buffers, or altogether in one buffer. We also learned how to work around Froyo’s broken OpenGL ES 2.0 …https://www.learnopengles.com/android-lesson-seven-an-introduction-to-vertex-buffer-objects-vbos/Wed, 07 Mar 2012 00:03:27 +0000https://www.learnopengles.com/android-lesson-seven-an-introduction-to-vertex-buffer-objects-vbos/In this lesson, we’ll introduce vertex buffer objects (VBOs), how to define them, and how to use them. Here is what we are going to cover: How to define and render from vertex buffer objects. The difference between using a single buffer with all the data packed in, or multiple buffers. Problems and pitfalls, and what …