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#include <cmath>
#include "utest_helper.hpp"
float cpu(float e0, float e1, float x)
{
x = (x - e0) / (e1 - e0);
if (x >= 1)
x = 1.f;
if (x <= 0)
x = 0.f;
return x * x * (3 - 2 * x);
}
void compiler_smoothstep(void)
{
const int n = 32;
float src1[n], src2[n], src3[n];
// Setup kernel and buffers
OCL_CREATE_KERNEL("compiler_smoothstep");
OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[3], 0, n * sizeof(float), NULL);
OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
OCL_SET_ARG(3, sizeof(cl_mem), &buf[3]);
globals[0] = n;
locals[0] = 16;
OCL_MAP_BUFFER(0);
OCL_MAP_BUFFER(1);
OCL_MAP_BUFFER(2);
for (int i = 0; i < n; ++i) {
float a = 0.1f * (rand() & 15) - 0.75f;
float b = a + 0.1f * (rand() & 15) + 0.1f;
float c = 0.1f * (rand() & 15) - 0.75f;
src1[i] = ((float*)buf_data[0])[i] = a;
src2[i] = ((float*)buf_data[1])[i] = b;
src3[i] = ((float*)buf_data[2])[i] = c;
}
OCL_UNMAP_BUFFER(0);
OCL_UNMAP_BUFFER(1);
OCL_UNMAP_BUFFER(2);
OCL_NDRANGE(1);
OCL_MAP_BUFFER(3);
for (int i = 0; i < n; ++i) {
float a = ((float*)buf_data[3])[i];
float b = cpu(src1[i], src2[i], src3[i]);
OCL_ASSERT(fabsf(a - b) < 1e-4f);
}
OCL_UNMAP_BUFFER(3);
}
MAKE_UTEST_FROM_FUNCTION(compiler_smoothstep);
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