#include "harness/compat.h"
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "procs.h"
static const char *smoothstep_kernel_code =
"__kernel void test_smoothstep(__global float *edge0, __global float *edge1, __global float *x, __global float *dst)\n"
"{\n"
" int tid = get_global_id(0);\n"
"\n"
" dst[tid] = smoothstep(edge0[tid], edge1[tid], x[tid]);\n"
"}\n";
static const char *smoothstep2_kernel_code =
"__kernel void test_smoothstep2f(__global float *edge0, __global float *edge1, __global float2 *x, __global float2 *dst)\n"
"{\n"
" int tid = get_global_id(0);\n"
"\n"
" dst[tid] = smoothstep(edge0[tid], edge1[tid], x[tid]);\n"
"}\n";
static const char *smoothstep4_kernel_code =
"__kernel void test_smoothstep4f(__global float *edge0, __global float *edge1, __global float4 *x, __global float4 *dst)\n"
"{\n"
" int tid = get_global_id(0);\n"
"\n"
" dst[tid] = smoothstep(edge0[tid], edge1[tid], x[tid]);\n"
"}\n";
#define MAX_ERR (1e-5f)
float verify_smoothstep(float *edge0, float *edge1, float *x, float *outptr,
int n, int veclen)
{
float r, t, delta, max_err = 0.0f;
int i, j;
for (i = 0; i < n; ++i) {
int vi = i * veclen;
for (j = 0; j < veclen; ++j, ++vi) {
t = (x[vi] - edge0[i]) / (edge1[i] - edge0[i]);
if (t < 0.0f)
t = 0.0f;
else if (t > 1.0f)
t = 1.0f;
r = t * t * (3.0f - 2.0f * t);
delta = (float)fabs(r - outptr[vi]);
if (delta > max_err)
max_err = delta;
}
}
return max_err;
}
const static char *fn_names[] = { "SMOOTHSTEP float", "SMOOTHSTEP float2", "SMOOTHSTEP float4"};
int
test_smoothstepf(cl_device_id device, cl_context context, cl_command_queue queue, int n_elems)
{
cl_mem streams[4];
cl_float *input_ptr[3], *output_ptr, *p, *p_edge0;
cl_program program[3];
cl_kernel kernel[3];
size_t threads[1];
float max_err = 0.0f;
int num_elements;
int err;
int i;
MTdata d;
num_elements = n_elems * 4;
input_ptr[0] = (cl_float*)malloc(sizeof(cl_float) * num_elements);
input_ptr[1] = (cl_float*)malloc(sizeof(cl_float) * num_elements);
input_ptr[2] = (cl_float*)malloc(sizeof(cl_float) * num_elements);
output_ptr = (cl_float*)malloc(sizeof(cl_float) * num_elements);
streams[0] = clCreateBuffer(context, CL_MEM_READ_WRITE,
sizeof(cl_float) * num_elements, NULL, NULL);
if (!streams[0])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[1] = clCreateBuffer(context, CL_MEM_READ_WRITE,
sizeof(cl_float) * num_elements, NULL, NULL);
if (!streams[1])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[2] = clCreateBuffer(context, CL_MEM_READ_WRITE,
sizeof(cl_float) * num_elements, NULL, NULL);
if (!streams[2])
{
log_error("clCreateBuffer failed\n");
return -1;
}
streams[3] = clCreateBuffer(context, CL_MEM_READ_WRITE,
sizeof(cl_float) * num_elements, NULL, NULL);
if (!streams[3])
{
log_error("clCreateBuffer failed\n");
return -1;
}
d = init_genrand( gRandomSeed );
p = input_ptr[0];
for (i=0; i<num_elements; i++)
{
p[i] = get_random_float(-0x00200000, 0x00200000, d);
}
p = input_ptr[1];
p_edge0 = input_ptr[0];
for (i=0; i<num_elements; i++)
{
float edge0 = p_edge0[i];
float edge1;
do {
edge1 = get_random_float( -0x00200000, 0x00200000, d);
if (edge0 < edge1)
break;
} while (1);
p[i] = edge1;
}
p = input_ptr[2];
for (i=0; i<num_elements; i++)
{
p[i] = get_random_float(-0x00200000, 0x00200000, d);
}
free_mtdata(d);
d = NULL;
err = clEnqueueWriteBuffer( queue, streams[0], true, 0, sizeof(cl_float)*num_elements, (void *)input_ptr[0], 0, NULL, NULL );
if (err != CL_SUCCESS)
{
log_error("clWriteArray failed\n");
return -1;
}
err = clEnqueueWriteBuffer( queue, streams[1], true, 0, sizeof(cl_float)*num_elements, (void *)input_ptr[1], 0, NULL, NULL );
if (err != CL_SUCCESS)
{
log_error("clWriteArray failed\n");
return -1;
}
err = clEnqueueWriteBuffer( queue, streams[2], true, 0, sizeof(cl_float)*num_elements, (void *)input_ptr[2], 0, NULL, NULL );
if (err != CL_SUCCESS)
{
log_error("clWriteArray failed\n");
return -1;
}
err = create_single_kernel_helper( context, &program[0], &kernel[0], 1, &smoothstep_kernel_code, "test_smoothstep" );
if (err)
return -1;
err = create_single_kernel_helper( context, &program[1], &kernel[1], 1, &smoothstep2_kernel_code, "test_smoothstep2f" );
if (err)
return -1;
err = create_single_kernel_helper( context, &program[2], &kernel[2], 1, &smoothstep4_kernel_code, "test_smoothstep4f" );
if (err)
return -1;
for (i=0; i<3; i++)
{
err = clSetKernelArg(kernel[i], 0, sizeof streams[0], &streams[0] );
err |= clSetKernelArg(kernel[i], 1, sizeof streams[1], &streams[1] );
err |= clSetKernelArg(kernel[i], 2, sizeof streams[2], &streams[2] );
err |= clSetKernelArg(kernel[i], 3, sizeof streams[3], &streams[3] );
if (err != CL_SUCCESS)
{
log_error("clSetKernelArgs failed\n");
return -1;
}
}
threads[0] = (size_t)n_elems;
for (i=0; i<3; i++)
{
err = clEnqueueNDRangeKernel( queue, kernel[i], 1, NULL, threads, NULL, 0, NULL, NULL );
if (err != CL_SUCCESS)
{
log_error("clEnqueueNDRangeKernel failed\n");
return -1;
}
err = clEnqueueReadBuffer( queue, streams[3], true, 0, sizeof(cl_float)*num_elements, (void *)output_ptr, 0, NULL, NULL );
if (err != CL_SUCCESS)
{
log_error("clEnqueueReadBuffer failed\n");
return -1;
}
switch (i)
{
case 0:
max_err = verify_smoothstep(input_ptr[0], input_ptr[1], input_ptr[2], output_ptr, n_elems, 1);
break;
case 1:
max_err = verify_smoothstep(input_ptr[0], input_ptr[1], input_ptr[2], output_ptr, n_elems, 2);
break;
case 2:
max_err = verify_smoothstep(input_ptr[0], input_ptr[1], input_ptr[2], output_ptr, n_elems, 4);
break;
}
if (max_err > MAX_ERR)
{
log_error("%s test failed %g max err\n", fn_names[i], max_err);
err = -1;
}
else
{
log_info("%s test passed %g max err\n", fn_names[i], max_err);
err = 0;
}
if (err)
break;
}
clReleaseMemObject(streams[0]);
clReleaseMemObject(streams[1]);
clReleaseMemObject(streams[2]);
clReleaseMemObject(streams[3]);
for (i=0; i<3; i++)
{
clReleaseKernel(kernel[i]);
clReleaseProgram(program[i]);
}
free(input_ptr[0]);
free(input_ptr[1]);
free(input_ptr[2]);
free(output_ptr);
return err;
}