PocketMatrix

Hi Countzero,

Kuroneko is correct, you need to re-upload the texture after it is changed. Also, you need to set the cleardata parameter to false when using UploadTexture().

I'm afraid it will have a negative impact on performance, because the uploading takes some time. While uploading, the texture is converted to an optimized layout which is one of the reasons texture uploading is slow.

Thanks, that fixed the problem but hit the framerates signficantly. What causes the overhead in the UploadTexure method? Is it just a wrapper for glTexImage2d() ?

Cheers!

Hi Countzero,

Yes, the overhead is caused by glTexImage2D, because it needs to re-arrange the pixel layout (for render optimization purposes).

The speed of texture uploading can also differ between OpenGL (ES) implementations.

Hi all,

I am also trying to use Opengles (glGenTextures & glTexImage2D) just to load and render my own texture on N95. It works fine just a first few seconds. After that, when the small Edgelib introduction window (at the bottom) disappears, my texture disappears at the same time, and there is nothing more on the screen.

Another problem is that the edgelib characters change to blocks on screen, with their texture updated to my own texture.

I don't know how to make Opengles work with Edgelib properly. What could be the problems?

Thank you in advance.

Hi,

Can you tell me if you're binding the texture before rendering?

Hi,

I think the initial problem is caused by the blending option. The OpenGL renderer sees your texture as 100% transparent and doesn't render it.

I recommend turning the blending option on before rendering the font, and turning it off when rendering your own models.