i have a texture class that can load from a few different formats and it can prepare a texture to be rendered to using glCopyTexImage2D and it can also project that texture to 2D window coordinates. what i want to do is draw the texture 2d to a non specific part of the screen and used my render to texture function to grab that same area and update the texture. however it seems when i try to grab the same area of screen the original texture is being drawn to, it starts to blur after numerous grabs. i don''t have the code with me right now, i was just hoping for some speculation. thanx in advance

Most likely you seam to change the size of the texture along the way, if you do that many times it can start to blur a little

Maybe you dont reset your texture, so it accumulates the rendering in it ?