Forums - use cl_mem_ext_host_ptr extension always failed!

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use cl_mem_ext_host_ptr extension always failed!
zhuyang50
Join Date: 8 Sep 15
Posts: 1
Posted: Thu, 2015-10-15 23:33
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Hi,

    I use Opencl to do some calculation using adren330, the data input is a Android Graphic Buffer. The performance requirement is critical, so I don't want openCL spend time to copy data from host to device. I've done some research, and it seems that using cl_mem_ext_host_ptr extension may solve my problem. I mainly reference this site https://www.khronos.org/registry/cl/extensions/qcom/cl_qcom_android_native_buffer_host_ptr.txt

 

   My problem is,to be specific, now I use clCreateImage2D using ANativeWindowBuffer, however, it always return -30(CL_INVALID_VALUE). My code is like:

 

    sp<GraphicBuffer> gb;
    cl_mem_android_native_buffer_host_ptr  myANBmem = {0};
    --snip--
    myANBmem.ext_host_ptr.allocation_type    = CL_MEM_ANDROID_NATIVE_BUFFER_HOST_PTR_QCOM;
    myANBmem.ext_host_ptr.host_cache_policy  = CL_MEM_HOST_WRITEBACK_QCOM;
    myANBmem.anb_ptr = gb->getNativeBuffer();
    buffer = clCreateImage2D(mContext,
                                CL_MEM_USE_HOST_PTR|CL_MEM_EXT_HOST_PTR_QCOM,
                                &clImageFormat,
                                width,
                                height,
                                pitch,
                                &myANBmem,
                                &errNum);
        if (errNum != CL_SUCCESS)
        {
            LOGE("Error creating CL image object errNum=%d",errNum);
            return UNKNOWN_ERROR;
        }
 
       Can someone give me some hints or suggestions? Or is there sample code for reference?
       Thanks a lot!

 

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Re: use cl_mem_ext_host_ptr extension always failed!
itzik
Join Date: 23 Jul 13
Posts: 1
Posted: Thu, 2016-07-07 04:35
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Encountered the exact same problem.

Can't seem to find information about the issue anywhere.

Android logs aren't helpful as well.

Any pointers are welcome.

 

Thanks.

Open CL Platform info:

PLATFORM:
Vendor:"QUALCOMM",
Name:"QUALCOMM Snapdragon(TM)",
Version:"OpenCL 1.2 QUALCOMM build: commit #93dd636 changeid #I2d06cc9496 Date: 09/30/15 Wed Local Branch:  Remote Branch: ",
Profile:"FULL_PROFILE".
DEVICE:
Vendor:"QUALCOMM",
Name:"QUALCOMM Adreno(TM)",
Version:"OpenCL 1.2 Adreno(TM) 430",
Driver Version:"OpenCL 1.2 QUALCOMM build: commit #93dd636 changeid #I2d06cc9496 Date: 09/30/15 Wed Local Branch:  Remote Branch:  Compiler E031.25.03.09",
Profile:"FULL_PROFILE".
DEVICE extensions:
cl_img_egl_image cl_khr_byte_addressable_store cl_khr_egl_event cl_khr_egl_image cl_khr_fp16 cl_khr_gl_sharing cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_i
nt32_base_atomics cl_khr_local_int32_extended_atomics cl_qcom_android_native_buffer_host_ptr cl_qcom_create_buffer_from_image cl_qcom_ext_host_ptr cl_qcom_ion_host_ptr cl_qcom_perf_hint

 

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