test case for DW multiplication

This case tests whether a predication bug of DW multiplication
had been fixed.

Signed-off-by: Homer Hsing <homer.xing@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/kernels/compiler_displacement_map_element.cl b/kernels/compiler_displacement_map_element.cl
new file mode 100644
index 00000000..ee40ad5b
--- /dev/null
+++ b/kernels/compiler_displacement_map_element.cl
@@ -0,0 +1,11 @@
+kernel void compiler_displacement_map_element(const global uint *in, const global uint *offset, int w, int h, global uint *out) {
+    const int cx = get_global_id(0);
+    const int cy = get_global_id(1);
+    uint c = offset[cy * w + cx];
+    int x_pos = cx + c;
+    int y_pos = cy + c;
+    if(0 <= x_pos && x_pos < w && 0 <= y_pos && y_pos < h)
+        out[cy * w + cx] = in[y_pos * w + x_pos];
+    else
+        out[cy * w + cx] = 0;
+}