OpenCL-CTS/test_conformance/basic/test_int2float.c

//
// Copyright (c) 2017 The Khronos Group Inc.
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

#if !defined(_WIN32)
#include <stdbool.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>


#include "procs.h"

const char *int2float_kernel_code = 
"__kernel void test_int2float(__global int *src, __global float *dst)\n"
"{\n"
"    int  tid = get_global_id(0);\n"
"\n"
"    dst[tid] = (float)src[tid];\n"
"\n"
"}\n";


int
verify_int2float(cl_int *inptr, cl_float *outptr, int n)
{
    int     i;

    for (i=0; i<n; i++)
    {
        if (outptr[i] != (float)inptr[i])
        {
            log_error("INT2FLOAT test failed\n");
            return -1;
        }
    }
	
    log_info("INT2FLOAT test passed\n");
    return 0;
}

int
test_int2float(cl_device_id device, cl_context context, cl_command_queue queue, int num_elements)
{
	cl_mem			streams[2];
	cl_int			*input_ptr;
    cl_float        *output_ptr;
	cl_program		program;
	cl_kernel		kernel;
	void			*values[2];
	size_t			lengths[1];
	size_t	threads[1];
	int				err;
	int				i;
	MTdata          d;
    
	input_ptr = (cl_int*)malloc(sizeof(cl_int) * num_elements);
	output_ptr = (cl_float*)malloc(sizeof(cl_float) * num_elements);
	streams[0] = clCreateBuffer(context, (cl_mem_flags)(CL_MEM_READ_WRITE),  sizeof(cl_int) * num_elements, NULL, NULL);
	if (!streams[0])
	{
		log_error("clCreateBuffer failed\n");
		return -1;
	}
	streams[1] = clCreateBuffer(context, (cl_mem_flags)(CL_MEM_READ_WRITE),  sizeof(cl_float) * num_elements, NULL, NULL);
	if (!streams[1])
	{
		log_error("clCreateBuffer failed\n");
		return -1;
	}
	
    d = init_genrand( gRandomSeed );
	for (i=0; i<num_elements; i++)
		input_ptr[i] = (cl_int)get_random_float(-MAKE_HEX_FLOAT( 0x1.0p31f, 0x1, 31), MAKE_HEX_FLOAT( 0x1.0p31f, 0x1, 31), d);
    free_mtdata(d); d = NULL;
		
	err = clEnqueueWriteBuffer(queue, streams[0], CL_TRUE, 0, sizeof(cl_int)*num_elements, (void *)input_ptr, 0, NULL, NULL);
	if (err != CL_SUCCESS)
	{
		log_error("clWriteArray failed\n");
		return -1;
	}
	
	lengths[0] = strlen(int2float_kernel_code);
    program = clCreateProgramWithSource(context, 1, &int2float_kernel_code, lengths, NULL);
	if (!program)
	{
		log_error("clCreateProgramWithSource failed\n");
		return -1;
	}
	
	err = clBuildProgram(program, 0, NULL, NULL, NULL, NULL);
	if (err != CL_SUCCESS)
	{
		log_error("clBuildProgramExecutable failed\n");
		return -1;
	}
	
	kernel = clCreateKernel(program, "test_int2float", NULL);
	if (!kernel)
	{
		log_error("clCreateKernel failed\n");
		return -1;
	}
	    
	values[0] = streams[0];
	values[1] = streams[1];
    err = clSetKernelArg(kernel, 0, sizeof streams[0], &streams[0]);
    err |= clSetKernelArg(kernel, 1, sizeof streams[1], &streams[1]);
	if (err != CL_SUCCESS)
	{
		log_error("clSetKernelArgs failed\n");
		return -1;
	}

	threads[0] = (size_t)num_elements;
    err = clEnqueueNDRangeKernel( queue, kernel, 1, NULL, threads, NULL, 0, NULL, NULL );
    if (err != CL_SUCCESS)
    {
        log_error("clEnqueueNDRangeKernel failed\n");
        return -1;
    }
        
    err = clEnqueueReadBuffer( queue, streams[1], true, 0, sizeof(cl_float)*num_elements, (void *)output_ptr, 0, NULL, NULL );
    if (err != CL_SUCCESS)
    {
        log_error("clEnqueueReadBuffer failed\n");
        return -1;
    }
        
    err = verify_int2float(input_ptr, output_ptr, num_elements);

	// cleanup
	clReleaseMemObject(streams[0]);
	clReleaseMemObject(streams[1]);
	clReleaseKernel(kernel);
	clReleaseProgram(program);
	free(input_ptr);
	free(output_ptr);
	
	return err;
}