TDA4VE-Q1: Rendering artifacts while using opengl + R5F display node on SDK9.1

David Khouya

Prodigy 80 points

Part Number: TDA4VE-Q1

Hi,

Setup

TDA4VE SOM on EVM boards
Default Linux + RTOS images from SDK 9.1
Software uses VPAC, OpenglES, R5F display node, TIDL
Tivx modification - Default stride set to 64 e2e.ti.com/.../tda4vm-opengl-render-issue-when-migrating-from-sdk-08-02-xx-xx-to-sdk-08-05-xx-xx

Question

We are currently facing display corruption when using the R5F display node. We use a custom opengl node based on the mosaic one from visionapps and we pass a vximage directly to the display node.

The graph is called in an a vxProcessGraph() and our graph looks like:
inputs -> [opengl openvx node on A72] -> [display node on R5F] -> display port

The problem is that at random time (~1/400) we can see corruption in the Y and X axis

Here a non corrupted image as reference.

Is it a behavior that TI's observed in certain cases or a known issue in the SDK9.1 ?

Thanks,

6 months ago

0 Erick Narvaez 3 months ago in reply to Erick Narvaez

TI__Mastermind 36307 points

David,

Are you still open to trying the 64K page size fixes? Can you remind me what SDK release version you are using? We have the fixes now and I can provide it.

Thanks,

Erick

0 David Khouya 2 months ago in reply to Erick Narvaez

Prodigy 80 points

Hi Erick,
Yes we would still like to have it. We are on 9.2 (Linux + RTOS sdk).

0 Erick Narvaez 2 months ago in reply to David Khouya

TI__Mastermind 36307 points

David,

We have pushed the change to your KM branch. Can you please pull the latest GPU DDK 23.3 branch form the SDK?

i.e. On ti-processor-sdk-linux-adas-j721s2-evm-09_02_00_05/board-support/extra-drivers/ti-img-rogue-driver-23.3.6512818, run:

git pull

This will pull the latest commits that enable auto aligning heaps to page sizes larger than 16K. Then rebuild the kernel driver, install it to your filesystem. I have instructions on how to do that here:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1316761/faq-tda4vl-q1-how-do-i-update-the-gpu-driver-on-tda4x-devices

You only need to install the KM driver. The UM driver is fine.

Regards,

Erick

0 Erick Narvaez 1 month ago in reply to Erick Narvaez

TI__Mastermind 36307 points

David, team,

Unlocking again as the thread was locked. From our meeting, 64K Page sizes did not help. We are going to check the QoS settings for the CSI and Display now, so I have an action to check with our team on what registers are of interest and how we can use a live setup most efficiently.

Regards,

Erick

Processors

Processors forum

TDA4VE-Q1: Rendering artifacts while using opengl + R5F display node on SDK9.1