--- /dev/null
+#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);
+ 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);