Access iOS Vram?

I hate to say this but your question doesn’t make any sense because:

• iOS GPUs don’t have dedicated VRAM, they use the same memory as the CPU

• if you’re working at the UIKit level, you don’t really need to worry about this sort of thing; UIKit takes care of these details

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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Perhaps more importantly:

• There's no direct, convenient mapping of views to the contents of video memory.
• That architecture drawing is for a system with a dedicated graphics processor with dedicated graphics memory.

If the problem is:

"I am planning on displaying an image in a UIImageView, and I want to confirm that the image in the view is what I want it to be"

then the solutions to that problem include:

• Render the view (or, more likely, the parent window) to an image
• Screen capture

Because there's two important points:

1. That article that you read is trying to do a basic explanation of the Quartz 'draw each view onto a polygon, then render the screen by asking the graphics processor to render all of those polygons' approach to drawing the screen, because that's replaced the previous BitBlt-based approaches to drawing window shaped regions on the screen.

2. The last time "I want access to VRAM to see what it's doing" worked was the BitBlt-based era, on a single application system.

Quinn thanks a lot for your response. Sometimes you need to ask stupid questions to learn 😀 My understanding of the hardware is just beginning and any input is always appreciated.

EDIT: Is there a place in the iOS API that better describes the details?

I had never thought of just taking a screen capture, this would most likely work exactly how I want it to. I will start investigating that more and making sure it fits within my requirements for design assurance. Great idea, Thanks!