OpenVX, can't get correct matrix rows.

[Xiaoying__Y]

Hi,  there

I am trying to pass a vx_matrix to opencl kernel and I get the following error.

[ ERROR ] OpenVX error callback: vxQueryMatrix failed: can't get matrix rows

I am pretty new to openvx ,would you please kindly tell me what could I have done wrong about the implement?

And if possible, please tell me How I can get the more detailed log of the error?

///////////////////////////////////
//Host:
///////////////////////////////////
vx_matrix colormatrix= vxCreateMatrix(ovxContext,VX_TYPE_UINT8,256,3); 
CHECK_VX_OBJ(colormatrix);
vx_uint8 colormatrix_lut[3][256]=
{
{0,1,2...to 255},
{0,1,2...to 255},
{0,1,2...to 255},
};

//writing the lut above to the vx_matrix object
CHECK_VX_STATUS(vxCopyMatrix(colormatrix_lut,(void*)stColorMatrixReg_Lut,VX_WRITE_ONLY,VX_MEMORY_TYPE_HOST));



///////////////////////////////////
//validator supposed the matrix above is in paramter[6]
///////////////////////////////////
...
        vx_uint32 para_06_matrix_col=0;
        vx_uint32 para_06_matrix_row=0;
        vx_enum para_06_matrix_type;
        if(vxQueryMatrix((vx_matrix)parameters[6],VX_MATRIX_TYPE,&para_06_matrix_type, sizeof(para_06_matrix_type)) == VX_SUCCESS&&
           (vxQueryMatrix((vx_matrix)parameters[6],VX_MATRIX_ROWS,&para_06_matrix_row, sizeof(para_06_matrix_row))==VX_SUCCESS)&&
           (vxQueryMatrix((vx_matrix)parameters[6],VX_MATRIX_COLUMNS,&para_06_matrix_col, sizeof(para_06_matrix_col))==VX_SUCCESS))
        {
                if(para_06_matrix_type==VX_TYPE_UINT8&&para_06_matrix_row==3&&para_06_matrix_col==256)
                {
                        status=VX_SUCCESS;
                }
                else
                {
                        status = VX_ERROR_INVALID_VALUE;
                        vxAddLogEntry((vx_reference)node, status, "input colormatrixcol and row incorrect\n ");
                }
        }

///////////////////////////////////
/////////////////////////////////////kernel in opencl
///////////////////////////////////
kernel kernel_name(...

	global uchar* stThreeDimensionReg_Lut_matrix_0, // pointer to matrix items
	uint32 rows_stThreeDimensionReg_Lut_matrix_0, // number of rows
	uint32 cols_stThreeDimensionReg_Lut_matrix_0, // number of columns
...
)
{
}

Thank you in advance for you help.

Xiaoying

[Shubha_R_Intel]

Dear Xiaoying, Y,

Since this is the OpenVino forum where questions related to Model Optimizer and Inference Engine are answered, please direct your OpenVX posts to the below forum:

https://community.khronos.org/c/openvx

Thanks !

Shubha

[Xiaoying__Y]

Hi Shubha

Thank you for the reply.

Actually I am afraid this extension is from intel as described in the link below.

https://software.intel.com/en-us/openvino-ovx-guide-intels-extensions-to-the-openvx-api-opencl-custom-kernels

That's why I post this question here.

Anyway,  I will try my luck in khronos forum too.

Thanks for the information.

Regards,

Xiaoying

Shubha R. (Intel) wrote:

Dear Xiaoying, Y,

Since this is the OpenVino forum where questions related to Model Optimizer and Inference Engine are answered, please direct your OpenVX posts to the below forum:

https://community.khronos.org/c/openvx

Thanks !

Shubha