[Intel-gfx] GMA HD driver support for hardware acceleration

[sudeep]

Thanks a lot Chris. Thanks for your valuable inputs.

Sudeep

Chris Wilson wrote:
> On Tue, 01 Feb 2011 15:45:34 +0530, sudeep <sudeeprk at tataelxsi.co.in> wrote:
>   
>> Hi All,
>>
>> I am a starter in Linux graphics. Our development board is 
>> *MATXM*-*CORE*-*411*-*B* from Emerson. It has
>> Intel i5 core and QM57 chip set. We have a a requirement to use the 
>> hardware acceleration for various graphics
>> operations such as blit, blend etc.
>> 1)Does the Linux graphics driver for GMA-HD(in our understanding, i915) 
>> support hardware acceleration for
>> blit/blend operations?
>>     
>
> Yes. Though the BLT engine (the blitter) can not do alpha blend nor
> scaling, it is a pure bitblt. To do alpha blending and other "advance"
> blits, you need to use the 3D pipeline (as on all previous genX).
> Ideally you would use GL.
>
>   
>> 2)How to test and verify the hardware acceleration for blit/blend 
>> operations  in GMA-HD platform
>>     
>
> The hardware contains a couple of register to show GPU activity. These are
> exposed in intel-gpu-tools/tool/intel_gpu_top, which shows how busy the
> GPU is. Assuming that tracing the actual emission of GPU commands doesn't
> convince you that the operations are being performed on the GPU.
> -Chris
>
>   


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