sprite and paint

OpenGL OpenGL: Basic Coding
1

Hello,

I am writing a little program to try OpenGL SE on android. I have a sprite moving on the screen as in old arcade games.
What I would like to do, is that the sprite leaves a trail of paint behind him. I do not know what it’s the best way to implement that.
I can divide the backgroud in many many small cells and colored them. Or I can change pixels colors in a texture and apply it onto the background.
What is the most efficient way of doing that ?

Thanks for your help !

Olivier

2

You could keep track of the N last sprite positions and draw GL_POINTS at those (possible with decreasing size) or to avoid gaps in the trail use GL_LINE_STRIP.