Render texture to image (.net cf)

Question

0.00/5 (No votes)

See more:

Hi There!

I'm trying to draw non rectangular 2D shapes (polygons, ellipses) with open gl es in .net cf, which are textured with gradients. I thought that i could create the gradient by drawing a rectangle with its vertices colored and than use that rectangle as a texture on the actual shapes. The only problem is that i can find a working code snippet that show how to render an opengl scene onto a Texture or Image (Bitmap) object.
The gradients has to be dynamic so loading them from file is out of the question, i have to create them in run time.

Please guide me to the right direction.
Thx in advance: Bali

Posted 17-Aug-11 3:26am

joe628aa

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Anthony Mushrow · Answer 1 · 2011-08-17T03:42:00

This[^] NeHe article (among other things) shows you how to render to a texture. The basic procedure is to set the viewport to the size of the texture then render whatever you need, and finally to copy your screen buffer to the texture using glCopyTexImage2D.

If you need to update the texture every frame you'd be better off avoiding the copy to texture and rendering straight onto the texture using FBOs (Frame Buffer Objects) which is demonstrated Here[^] but it's a little more complicated.

joe628aa · Answer 2 · 2011-08-18T00:44:00

Solution 2

Thank you for the answer, I'll try it out.

Posted 18-Aug-11 0:44am