Support forums

Mobile, Graphics, and Gaming forum EGL Pixbuffer is slow

Locked Locked
Replies 9 replies
Subscribers 136 subscribers
Views 5875 views
Users 0 members are here

Options

How was your experience today?

This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

EGL Pixbuffer is slow

Ahmed Tolba over 11 years ago

Note: This was originally posted on 25th February 2013 at http://forums.arm.com

Hi All,

I'm having a 1k*1k*rgb texture that is rendered using shader and I want to copy the pixels to buffer so that I use Opencv with it. I tried glreadpixels and its very slow, I tried Pixbuffer of Egl, it has the same perforamance its very slow 7FPS. I'm using Mali400 on Exynos4412

Here is the code
Please view it in pastebin, there is a problem with code posting here

http://pastebin.com/TwrtF0EG

Parents

Ahmed Tolba over 11 years ago

Note: This was originally posted on 5th March 2013 at http://forums.arm.com

Thanks for your reply.

I'm trying to do some GPU Processing like thresholding an image, then get the result from the GPU to the CPU and do some OpenCV operations.

The way to transfeer the data from the GPU to CPU using glreadpixels or eglpixel buffer is really slow.
Cancel
Vote up 0 Vote down

Cancel

Reply

Ahmed Tolba over 11 years ago

Note: This was originally posted on 5th March 2013 at http://forums.arm.com

Thanks for your reply.

I'm trying to do some GPU Processing like thresholding an image, then get the result from the GPU to the CPU and do some OpenCV operations.

The way to transfeer the data from the GPU to CPU using glreadpixels or eglpixel buffer is really slow.
Cancel
Vote up 0 Vote down

Cancel

Children

No data