Can we estimate VRAM usage when certain OpenGL function is called (based on arguments passed) without testing on actual device?

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Hi Swathi,

Thanks for your message, and welcome to the PowerVR Developer Forum!

Unfortunately there is not a PowerVR OpenGL ES extension providing available dedicated video memory. The approach you are following to manually estimate the GPU memory size of each OpenGL ES object is a possible workaround.

As explained in this thread Query total & available GPU memory there is also another way: You can work with the NDA version of our profiling tool PVRTune, PVRTuneComplete, taking a recording with the extra options Client API OpenGL ES and Client Memory Tracking:

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This way you will be provided with a GPU counter GLES Device Memory Usage which plots the amount of memory allocated by the driver:

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This option will limit you to work directly with a single device but at least you will get the information needed. You can request PVRTuneComplete by sending an email to devtech.portal@imgtec.com

Please let me know if you have any other questions.

Best regards,
Alejandro