OpenGL textures

SDL Development
1

Hello,

I have a SDL/OpenGL aplication where I will need to update some textures using
separate threads.

The problem is that I have to use locks and platform specific code to release
the context and make it current to the threads that update the textures.

I could also create a context per thread and share the textures, but again I
think I would need platform specific code.

Another solution would be to copy the new image to the memory and before
rendering, copy to the texture, but this would mean I need buffers for the
images = more memory, and would make the whole process too slow due to memory
copying: Thread -> Buffer -> Texture, plus locking the buffer.

Is there a better way to solve this problem !?

Any ideas !?

wpr.

2

Perhaps we could help if you could be a bit more specific about what
task you’re trying to accomplish - it seems to me that there might be a
simpler way of doing things.On Aug 6, 2004, at 3:10 AM, wpr wrote:

Hello,

I have a SDL/OpenGL aplication where I will need to update some
textures using
separate threads.

The problem is that I have to use locks and platform specific code to
release
the context and make it current to the threads that update the
textures.

I could also create a context per thread and share the textures, but
again I
think I would need platform specific code.

Another solution would be to copy the new image to the memory and
before
rendering, copy to the texture, but this would mean I need buffers for
the
images = more memory, and would make the whole process too slow due to
memory
copying: Thread -> Buffer -> Texture, plus locking the buffer.

Is there a better way to solve this problem !?

Any ideas !?

wpr.

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  • Donny Viszneki
3

Donny Viszneki <smirk thebuicksix.com> writes:

Perhaps we could help if you could be a bit more specific about what
task you’re trying to accomplish - it seems to me that there might be a
simpler way of doing things.

The thread updates the texture with frames from a movie. The movie will be
displayed somewhere in the scene using the texture.

Sometimes there will be one or more movies and other times none.

wpr.