AM57xx: Texture Streaming approach

Gunter Schmer

Hi Anand,

My question comes back to how to best accomplish Texture Streaming with the current ProcSDK or GLSDK Graphics stack. I.e. how to pass image data to the GPU in real-time at typical video frame-rates. Are there fast ways to read pixels from the GPU off-screen framebuffer?

Is the right approach EGLImage?

There has been a good start in the below thread, but it did not get to the texture streaming part.

Thanks,

--Gunter

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

I will ask the video experts to comment.

0 Anand Balagopalakrishnan over 9 years ago in reply to Biser Gatchev-XID

TI__Expert 5130 points

Gunter,

When we say streaming textures, we mean fast changing content such as video frames that need to be mapped as textures, typically on a per-frame basis.The right approach is to use EGLImage for passing streaming YUV frames as textures. This involves a CPU/other HW write => GPU read.

glReadPixels is different from streaming textures. In this case, we have a GPU write => CPU read.

Regards,

Anand

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AM57xx: Texture Streaming approach