[Libva] drm_intel_bo_alloc_for_render + dri_bo_map can help me read back the decoded data?

[hank peng]

2011/8/15 Xiang, Haihao <haihao.xiang at intel.com>:
> On Sat, 2011-08-13 at 23:28 +0800, hank peng wrote:
>> Hi, all:
>> I noticed that the dri_bo of a object surface is allocated using
>> drm_intel_bo_alloc_tiled function which returned USWC buffer, can I
>> use drm_intel_bo_alloc_for_render instead and then dri_bo_map to get
>> real decoded data back?
>
> No
>

you mean we should call drm_intel_bo_alloc_tiled with I915_TILING_Y?
If I call drm_intel_bo_alloc_tiled with I915_TILING_NONE, and then
dri_bo_map, I will not get the right decoded data?

>>
>>
>
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-- 
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