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Archive of posts tagged OpenGL ES

Fast blit with OpenGl ES and Qt

In my previous post I wrote about blit with opengl es 2.0 texture upload. However I noticed that using just Qt’s QGLWidget and implementing only the paintEvent is as fast as the texture upload with pure OpenGL ES API. I guess that QGLWidget is making the drawing via OpenGL, since the performance seems to be […]

Fast Blit with OpenGL ES 2.0 and texture uploading

OpenGL ES 2.0 is fully shader based, which means you can’t draw any geometry without having the appropriate shaders loaded and bound. This means there is more setup code required to render than there was in OpenGL ES 1.1 with fixed pipeline. Setting up the OpenGL ES 2.0 pipeline. The actual drawing is done in […]

Studying Opengl ES

I have purchased two books about OpenGL ES. The one on the right “OpenGL ES game development” I bought several years ago. Its primary focused for an average developer, who wants to learn OpenGL ES and has OpenGL background. The book has chapter about fixed point math and other limitations to deal with mobile devices. […]