Best method to render animated textures?

[eaa]

I have a series of textures, retrieved from an animation (of my own
design) which can be loaded directly into individual opengl textures.
However, I wanted to ask here what the best method for creating an
animated texture/texture group would be. So down to the question: What is
the best method for creating and rendering an animated texture?
Thanks.

[Jakob Bieling]

Post by eaa
What is
the best method for creating and rendering an animated texture?

Not sure if this is the best method, but I would do it this way:

- create a framebuffer object
- attach the texture to it
- render to it

Then you can use the texture. You can find code for fbo's in the
'renderbuffer objects' thread.

hth

[Malte Clasen]

Post by eaa
What is
the best method for creating and rendering an animated texture?

The common way is to create a texture and update the content using
TexSubImage(). The new way seems to be using pixel buffer objects:

http://oss.sgi.com/projects/ogl-sample/registry/ARB/pixel_buffer_object.txt

I've not tried that one, yet, but it looks reasonable.

Malte

[fungus]

Post by Malte Clasen

Post by eaa
What is
the best method for creating and rendering an animated texture?

The common way is to create a texture and update the content using
http://oss.sgi.com/projects/ogl-sample/registry/ARB/pixel_buffer_object.txt

Did you mean "framebuffer objects".

Pixel buffer objects are supported on exactly
three different graphics cards:

http://www.delphi3d.net/hardware/extsupport.php?extension=GL_ARB_pixel_buffer_object

Framebuffer objects are a lot more widely
supported but they're still nowhere near
universal:

http://www.delphi3d.net/hardware/extsupport.php?extension=GL_EXT_framebuffer_object

For most cards you should use ARB_render_texture,
- though Intel doesn't support it and they're the
most common graphics chip:

http://www.delphi3d.net/hardware/extsupport.php?extension=WGL_ARB_render_texture

If your program is on general release the the public
you'll have to support all methods right back to
glCopyTexSubImage() if necessary.


Then again, it all depends on what you're doing. Do you
need to render to the texture using OpenGL or do you
simply want to copy images into it (eg. video playback)?
For video playback you just need glTexSubImage()
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