Can I create a opencl buffer from a GraphicBuffer or a raw ion buffer

Hi songmao,

Here is how to use this extension:

      #define WIDTH  1024

      #define HEIGHT 512

      // Create buffer to be used as a hardware texture with graphics APIs (can also

      // include video/camera use flags here)

      int dma_buf_handle = get_dma_buf_handle_from_exporter_kernel_module( ..., WIDTH * HEIGHT * 2 );

      cl_int error = CL_SUCCESS;

      cl_mem buffer = clImportMemoryARM( ctx,

                                         CL_MEM_READ_WRITE,

                                         { CL_IMPORT_TYPE_ARM, CL_IMPORT_TYPE_DMA_BUF_ARM, 0 },

                                         &dma_buf_handle

                                         WIDTH * HEIGHT * 2,

                                         &error );

      if( error == CL_SUCCESS )

      {

          // Use <buffer> as you would any other cl_mem buffer

      }

However, without a more recent revision of the driver (>= r7p0) you won't be able to use it, sorry.

Regards,

Anthony

Hi songmao,

Here is how to use this extension:

      #define WIDTH  1024

      #define HEIGHT 512

      // Create buffer to be used as a hardware texture with graphics APIs (can also

      // include video/camera use flags here)

      int dma_buf_handle = get_dma_buf_handle_from_exporter_kernel_module( ..., WIDTH * HEIGHT * 2 );

      cl_int error = CL_SUCCESS;

      cl_mem buffer = clImportMemoryARM( ctx,

                                         CL_MEM_READ_WRITE,

                                         { CL_IMPORT_TYPE_ARM, CL_IMPORT_TYPE_DMA_BUF_ARM, 0 },

                                         &dma_buf_handle

                                         WIDTH * HEIGHT * 2,

                                         &error );

      if( error == CL_SUCCESS )

      {

          // Use <buffer> as you would any other cl_mem buffer

      }

However, without a more recent revision of the driver (>= r7p0) you won't be able to use it, sorry.

Regards,

Anthony

thx, I see, and I have another popular platform, rk3288.

Will the driver have a update to >= r7p0?

http://malideveloper.arm.com/resources/drivers/arm-mali-midgard-gpu-user-space-drivers/

And would you please suggest some opensource benchmark to evaluate the gpu/opencl performance?

Thanks,

Songmao

Hi songmao,

guillaume.tucker is preparing a release of an updated driver for the Firefly. It should be soon.

Kind Regards,

Michael McGeagh

Thanks, Michael and Anthony, Thanks for your help.

Songmao