topic IMX6 eglGetDisplay used too much memory in i.MX Graphics

IMX6 eglGetDisplay used too much memory

JoRadio — Thu, 03 Jul 2025 03:56:01 GMT

When I initialize EGL display using the FB API of IMX6, the eglGetDisplay function will occupy 140MB of memory after being called. Is this normal? Why does each OpenGL program occupy so much memory？

Re: IMX6 eglGetDisplay used too much memory

Zhiming_Liu — Mon, 07 Jul 2025 01:52:03 GMT

Hi,

It's not just FB that is allocated, Tthe following buffers are also allocated:

GPU Command Buffers
Shader Compilation Buffer
Texture/Buffer management pool
DRM/FB device cache

Best Regards,
Zhiming

Re: IMX6 eglGetDisplay used too much memory

JoRadio — Tue, 08 Jul 2025 02:10:56 GMT

I have used IMX8 products. When initializing OpenGL, this product doesn't need to allocate so much memory, so I think this is a GPU driver defect of IMX6. If each process that uses OpenGL needs to allocate so much memory, the total number of processes will be limited.