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Hardware composer is the Android version of this: https://source.android.com/devices/graphics/implement-hwc https://source.android.com/devices/graphics/implemen
by stefan_ 5y ago
Hardware composer is the Android version of this: https://source.android.com/devices/graphics/implement-hwc https://source.android.com/devices/graphics/implement-hwc
This has become a lot more important with smartphones than desktop systems. You now have often very different silicon for things like video decoding, graphics and scanout - and to achieve reasonable battery time you need common use cases like watching a video to not involve the GPU at all.
- froh 5y agoDedicated video decoding silicon is not part of the GPU?
- zeusk 5y agoVideo decoders are usually fixed function blocks, separate from the SMs (which I believe the parent is referring to by "GPU") but are still usually on the same physical silicon as the GPU (in case of SoCs, also shared with CPU). They're exposed as an independent engine on the GPU/SoC and can operate with most of the chip power gated.