Enforce linear buffer for decoding in the case of hybrid-GPU #241
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In hybrid GPU case, video decoder could be iGPU and the coded images would be consumed by dGPU. Unfortunately, it's likely that we can hardly find a tiling format supported by both of them. To achieve best compatibility and make our life better, simply use linear buffers for decoded images. By setting CPU_READ and CPU_WRITE flags, we force OneVPL to allocate internal buffers and blit decoded content to external buffers. In this way we can work around hardware limitation that DG2 cannot decode to linear buffers. We will detect the GPU group type and decide whether to use linear buffers or not. Tracked-On: OAM-126399 Signed-off-by: Weifeng Liu <[email protected]> Signed-off-by: ZhuChenyanX <[email protected]>
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Apr 3, 2025
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In hybrid GPU case, video decoder could be iGPU and the coded images would be consumed by dGPU. Unfortunately, it's likely that we can hardly find a tiling format supported by both of them. To achieve best compatibility and make our life better, simply use linear buffers for decoded images.
By setting CPU_READ and CPU_WRITE flags, we force OneVPL to allocate internal buffers and blit decoded content to external buffers. In this way we can work around hardware limitation that DG2 cannot decode to linear buffers.
We will detect the GPU group type and decide whether to use linear buffers or not.
Tracked-On: OAM-126399