1
vote
1answer
651 views

android: How to apply pinch zoom and pan to 2D GLSurfaceView

I want to apply pinch zoom and panning effect on GLSurfaceView. It is Image editor, so It would not be 3D object. I tried to implement using these following links: ...
2
votes
1answer
275 views

Combining 2D and 3D in game engine

I've implemented basic 3D functionality and made little "2.5D" demo in orthographic projection using OpenGL ES 2 and Box2D. Now I want to make completely two-dimensional game (using sprites) and ...
3
votes
2answers
968 views

OpenGL ES 2.0: 2D game rendering, no performance gain with glDraw call batching

I just did a small benchmark. To my surprise batching sprites into a single draw call doesn't give any significant performance boost. Following are my results: Hardware: iPod touch 4 Extra info: ...
0
votes
0answers
182 views

How to render alpha channeled animated 2D sprites in OpenGL ES 2.0

I searched, but I can't find specifically how to render animated 2D sprites with an alpha channel onto a 3D polygon, z=0, in OpenGL ES 2.0. This is just a basic 2D concept, but since I'm using, ...
-1
votes
1answer
218 views

How can one make multiple movable images in OpenGL ES 2.0? [closed]

I was wondering, I've only seen examples of OpenGL ES 2.0 where people have used one or perhaps two images. I didn't see multiple images of where they each had independent movement. What if someone ...
3
votes
1answer
419 views

Proper way to maintain Vertex Buffer Objects

I've started learning WebGL, currently I'm building a 2D lighting system, but there is some confusion going on inside my head. How the lighting works is based on this tutorial ...
1
vote
2answers
1k views

Trying to Draw a 2D Triangle in OpenGL ES 2.0

I'm trying to convert a code from OpenGL to OpenGL ES 2.0 (for the BlackBerry PlayBook). So far what I got is this (just the part of the code that should draw the triangle): void setupScene() { ...