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Tag: opengl-es

Can’t write to GL_RGBA32UI FBO texture on OpenGL ES

I have two GL_RGBA32UI FBO textures, which I use to store current state of particle positions/velocities per texel. The first I fill with data like this only once: Per render loop the second one is written to via a shader while the first is used as texture and the second as target. I do that by drawing a quad of

OpenGL ES rotating shape around its center

I tried to rotate rectangle using rotateMatrix, following tutorial on https://developer.android.com/training/graphics/opengl/motion, but when I runned it, the rectangle is rotating around (I think) point 0,0. What do I need to change to make it rotate around it’s center? Answer If you want to rotate around a pivot you have to: Translate the object so that the pivot point is moved