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Debugger Shows ram or ram+vram?

I want to know if the debugger shows ram or ram+vram usage? Through my tests i came to know that each 2048x2048 texture page takes about 16mb vram. But in debugger it's like 32mb which is double of vram usage. Another question is if we use gm compressed vs external texture pages let's say-

2048x2048 Page-
GM compressed page - 4MB
External Texture Page - 32MB

In that case whether compressed 4MB page will be loaded to vram too or will it be uncompressed 16MB whether we use external or inbuilt resources?
 
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