Texture mapping using openGL ES 2.0 on Sgx core

Poonam Metkar

Hi everyone,

I am working on TI TDA2x linux part of Vision SDK V(2.10) .

I have changed the capture format from YUV420sp to RGB888 as I have algorithms which need to be processed on RGB image .

My rendering process is taking too much time.

It would be good if you can help me with some alternative to reduced time taking for display .

Also It would be highly appreciate, if you can share sample source code which does texturing on RGB image on TI TDA2x with Vision SDK on linux.

Thanks & Regards,
Poonam

over 8 years ago

0 Mariya Petkova over 8 years ago

TI__Expert 4885 points

Hi, Poonam,

The experts have been pinged to comment here.

Regards,
Mariya

0 Poonam Metkar over 8 years ago in reply to Mariya Petkova

Intellectual 270 points

Hi, Mariya,

I am stuck with this problem since last two week, could you please provide me the solution as soon as possible.

Thanks in advance,
Poonam

0 Anand Balagopalakrishnan over 8 years ago in reply to Poonam Metkar

TI__Expert 5130 points

Hi Poonam,

Can you confirm where the RGB based algorithms are running? Are they running as shaders in GPU? Or is some pre-processing happening on A15 / DSP cores?

In addition, how are you doing the color conversion from YUV to RGB?

Regards,
Anand

0 Poonam Metkar over 8 years ago in reply to Anand Balagopalakrishnan

Intellectual 270 points

Hi Anand,
I am not doing any color conversion. I made changes in data format in chains_common.c file, so that I get camera input in RGB format.
Regards,
Poonam

0 Anand Balagopalakrishnan over 8 years ago in reply to Poonam Metkar

TI__Expert 5130 points

Hi Poonam,

Can you pass in NV12 buffers to GPU? The current VisionSDK releases are based on Linux kernel 3.14 SDK release. There is a release of K4.4 based Linux SDK planned next year. That release will support RGB based streaming textures.

Right now, the only way to update RGBA textures is through glTexImage2D. However, this is not efficient as it involves a copy.

Regards,

Anand

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Texture mapping using openGL ES 2.0 on Sgx core