topic Re: Fast frame transfers from GPU memory to VPU. in i.MX Processors

Fast frame transfers from GPU memory to VPU.

JeremyStashluk — Tue, 15 Jan 2013 17:03:20 GMT

Is there a way to perform a transfer from the GPU framebuffer memory directly to the VPU for encoding?

I am using i.MX6 with the Vivante GPU.

glReadPixels takes ~28ms in my application at 960x720, which is almost my entire time budget.

Re: Fast frame transfers from GPU memory to VPU.

andre_silva — Fri, 18 Jan 2013 17:47:35 GMT

Copying Prabhu´s answer for this question:

Re: Fast frame transfers from GPU memory to VPU.

PrabhuSundararaj Jan 18, 2013 10:38 AM (in response to imxcommunityscout)

always read pixels consumes lot of time. Configure virtual framebuffer, (check in the communty). Render to virtual framebuffer and use it in the VPU. There will be sample available as part of GPU sdk soon for download.

Re: Fast frame transfers from GPU memory to VPU.

JeremyStashluk — Mon, 04 Feb 2013 21:04:15 GMT

Any word on the SDK? I wasn't able to locate anything helpful on the community.

Re: Fast frame transfers from GPU memory to VPU.

davecbluechip — Thu, 14 Feb 2013 14:48:47 GMT

Try this -

https://www.freescale.com/webapp/Download?colCode=IMX6_GPU_SDK&location=null&fpsp=1&WT_TYPE=IDE%20-%20Debug,%20Compile%2…