[GSoC] GPU hardware assisted H.264 decoding via OpenGL GLSL shaders - developers only

feerlessleadr Wrote:now wouldn't have that been a much easier response to type than what you did?

i apologize for asking a question about a feature I (and I am sure alot of others) are very anxious about. I will avoid this forum as it is obvious that "non-developers" are not welcome for questions and status updates...

At more than 10x the word count, I'd say no, it wasn't easier. That any the information I provided was readily available to anyone with the slightest knowledge of svn, a tool that anyone in a _developer only_ forum should possess a great amount of knowledge about. And since it's obviously not clear to those who have become lost here, let me quote the description of this forum:

Quote: XBMC Development Forums (9 Viewing)
Developers forums for XBMC development. Programmers/Coders only!
No end-user support and no feature/function requests here please!

So, let me get this right...

The point is to let XBMC decode HD content better by sharing the workload with the GPU, right?

So if this works, it could help with .264 playback on the Xbox? Regardless, it sounds quite interesting. Definitely over my head.

digitalhigh Wrote:So, let me get this right...

The point is to let XBMC decode HD content better by sharing the workload with the GPU, right?

So if this works, it could help with .264 playback on the Xbox? Regardless, it sounds quite interesting. Definitely over my head.

Yes, we're offloading some work to the GPU. However, as I've said before, this particular implementation is unlikely to benefit the xbox because a) it's done in OpenGL (xbox is DirectX), b) the GPU hardware on the xbox probably doesn't meet the technical requirements, and c) most of our developers have lost interest in the xbox.

malloc Wrote:Yes, we're offloading some work to the GPU. However, as I've said before, this particular implementation is unlikely to benefit the xbox because a) it's done in OpenGL (xbox is DirectX), b) the GPU hardware on the xbox probably doesn't meet the technical requirements, and c) most of our developers have lost interest in the xbox.

Yes, I re-read some of the information here last night, and I gathered that the odds of Xbox Support is HIGHLY unlikely. It's a bit sad too, because it sounds like this could be the answer to non-stuttering .264 playback on older systems.

Very fascinating...just a pity that none of these brilliant devs care enough about our old xbox to do some separate research for the DirectX crowd...although after reading the arguements in the "should xbox be supported" thread, I figured this would be the case...

Ah well...as long as XBMC stays alive.

see, in our brilliance we have realized that the xbox is a DEAD platform as far new media is concerned.

spiff Wrote:see, in our brilliance we have realized that the xbox is a DEAD platform as far new media is concerned.

I'm not going to argue that it's not past it's prime...but I think that if somebody were to have the love and knowledge, .264 playback on the xbox1 platform sounds pretty possible. Wouldn't that mean that it's technically *not* dead for new media?

Again...I agree that HTPC is going to be the way to go, but to say that the Xbox CAN'T play HD content doesn't seem to be right...this stuff makes it sound like it could still be feasable...we'll just never see it.

Quote:I'm not going to argue that it's not past it's prime...but I think that if somebody were to have the love and knowledge, .264 playback on the xbox1 platform sounds pretty possible. Wouldn't that mean that it's technically *not* dead for new media?

Again...I agree that HTPC is going to be the way to go, but to say that the Xbox CAN'T play HD content doesn't seem to be right...this stuff makes it sound like it could still be feasable...we'll just never see it.

These statements seem about right, coming from someone who's made it quite clear that they aren't a developer.

The Xbox's GPU is GeForce3 class, so at best it has hardware (but AFAIK no interface) for OpenGL 1.2. GLSL (which this entire project is based around) wasn't introduced until OpenGL 1.5. So no, the Xbox has no hopes of seeing any benefits here.

AFAIR the Xbox GPU is between GF3 and GF4 - so more than a 3 but missing stuff from a 4.
Rumor once said a MS dev was able to decode full hd video using the GPU. I do not remeber the rumor saying anything about codec, so as guess would be a WMV file or a TS at 1080i

Quote:The Xbox's GPU is GeForce3 class, so at best it has hardware (but AFAIK no interface) for OpenGL 1.2. GLSL (which this entire project is based around) wasn't introduced until OpenGL 1.5. So no, the Xbox has no hopes of seeing any benefits here.

I thought I read in one of the posts here that HLSL was supported, and that transitioning from GLSL to HLSL wasn't too far fetched...that was my main reason for asking in the first place. I thought it was stated that making this work for an Xbox WAS theoretically possible.

It's likely too early a version of HLSL to contain the needed functionality. After all, it is a GeForce 3 (or 4). But again, anyone willing to attempt the port is welcome since the source code is available. We're straying off topic...