VRAM usage not reported correctly.

[AriusEso]

I vaguely remember someone else mentioning this. But I couldn't find a bug thread. I was stress testing one of my loading routines and I noticed only minimal VRAM usage. I'm loading 869mb's worth of textures with only 2-4mb's of VRAM being used. The amount changes when I switch from windowed to fullscreen and vice-versa. Now, I am recreating my render targets on this occurrence, so I know it's not them being dropped from memory. I'm assuming TV doesn't drop texture resources on device reset(?).

Fullscreen: http://azazeldev.org/possible_bugs/full.png
Windowed: http://azazeldev.org/possible_bugs/window.png

VRAM usage is bottom left.

I'm grabbing the values by doing:

Code:

std::string Free     = mageCore::Util->IntToStr((mageCore::CC.m_Textures->GetFreeTextureMemory() / 1024) / 1024);
std::string Used     = mageCore::Util->IntToStr((mageCore::CC.m_Textures->GetUsedTextureMemory() / 1024) / 1024);
std::string Comb     = "VRAM: " + mageCore::Util->CombineStrings(Used, Free, "/") + " MB";

Which I assume is correct.

So are these functions borked, or is it something my end?

Edit:

Also, just had a thought when I woke this morning. You are loading the textures in to VRAM, right, and not system RAM? ( I vaguely remember the default pool resources get lost on device reset... ? ).

[SylvainTV]

TextureMemory is really not like VRAM.
You have actually 3 places : VRAM / NONLOCALvideomemory / SYSTEMMEMORY

All textures are first stored in RAM, except rendersurfaces, they're uploaded to NON LOCAL MMEMORy or VRAM depending on the priority of the texture.

You shouldn't use the numbers returned by the GetTextureMemory as VRAM numbers

Unfortunately there is no way to get really the used/free VRAM, it's missing from DirectX9 if I remember well.