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texturememory, read back pixels into main memory

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hi folks, two short questions: 1. is there a standardized way to get the current amount of used texture memory (in total or for one gl context)? 2. how can i actually really read back pixelvalues (for further processing on the CPU) from gfx-mem to main memory? or is this even possible? thx in advance

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@2 thanks man, how could i overlook that ...

@1 hmm, and is there a non standardized (just nvidia) way?
or how could i estimate it. do the drivers store the raw bytes + some overhead (how much?) or do they process (compress?) the uploaded images in some way (efficient mipmaps)?

[Edited by - ghostd0g on June 4, 2007 7:25:37 AM]

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