How much GPU is used by PPSSPP?

[Danyal Zia]

(06-07-2013 05:42 PM)Donel Wrote:  Use gpu-z to check this. It gives a percentage to GPU load.

I've just checked it through GPU-Z. It seems that in lower resolutions, GPU load is negligible (about 5-10%) and emulation is mostly done by CPU. But, in higher resolutions, GPU load seems to increases (about 50-60%). I've checked this with Castlevania Dracula X Chronicles. Now my question is: Are xBRZ texture scaling done by GPU emulation as shader implementation? As I can see the increase in load of GPU when I increase amount of texture scaling (from 2x to 4x)

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(06-09-2013 05:01 AM)xsacha Wrote:  Basically you need a CPU fast enough to generate 60 frames (run the CPU loop) for that game-- usually quite a weak CPU.
Then you need a GPU fast enough to render those 60 frames -- usually a fairly decent GPU but depends on the game.

You wouldn't associate percentages with them. It's more a threshold thing.

You can get 60 VPS and 0 FPS with no GPU, for eg.
You can get 0 VPS (and hence 0 FPS) with no CPU, for eg.

A lot of emulators don't use the GPU at all for the emulation (like shaders). Basically PS1 and everything weaker.

How can it produce 60 VPS if there are no frames at all?! Through frameskipping, right? Many emulators such as Desmume (Nintendo DS emulator) don't use GPU at all that's why they are too slow. Using filters there make it more slow as it seems filtering is done by CPU too! PPSSPP is damn fast that's why I was wondering if it's secret of performance is behind the fact that some operations in PPSSPP is done by GPU.