hardware acceleration on allwinner A10/A20 with vdpau and OpenGLES (zero-copy)

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mosterta Offline
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Post: #196
I don't have a 4k display, therefore I can't tell anything to that configuration. Only that 4k decoding is not supported by A20.
But the configuration fb0_framebuffer_num = 2 is correct, you need 2 buffers for double buffering.

The memory allocation for CMA is important, but there is no change required to what we already discussed in this thread (min 128MB for CMA).
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matrzh Offline
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Post: #197
I was being stupid. It just iterates through the modes and uses the 1920x1080 below. I thought it tried the 3840x2160 from double framebuffer size, not thinking much (that it would be 4 times the 1920x1080...).
Anyway. I will fiddle around a little. Since I will be away for 10 days, it will be some time before I let you know if I progress
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