[Beignet] [PATCH] Fix the compare_image_2d_and_1d_array test case bug

[junyan.he at inbox.com]

From: Junyan He <junyan.he at linux.intel.com>

The test case use OCL_MAP_BUFFER_GTT to map the image
buffers and then do the result comparison, which may
cause problems.
On IVB and HSW, the slice pitch is equal but on BDW,
because we change the slice pitch of image array, it
cause this bug.
Modify it by using the standard clEnqueueReadImage API.

Signed-off-by: Junyan He <junyan.he at linux.intel.com>
---
 utests/compare_image_2d_and_1d_array.cpp |   21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/utests/compare_image_2d_and_1d_array.cpp b/utests/compare_image_2d_and_1d_array.cpp
index f2c828e..a2de507 100644
--- a/utests/compare_image_2d_and_1d_array.cpp
+++ b/utests/compare_image_2d_and_1d_array.cpp
@@ -8,6 +8,10 @@ static void compare_image_2d_and_1d_array(void)
   cl_image_format format;
   cl_image_desc desc;
   cl_sampler sampler;
+  uint32_t* dst0;
+  uint32_t* dst1;
+  size_t origin[3] = { };
+  size_t region[3];
 
   // Create the 1D array buffer.
   memset(&desc, 0x0, sizeof(cl_image_desc));
@@ -60,19 +64,26 @@ static void compare_image_2d_and_1d_array(void)
   locals[1] = 16;
   OCL_NDRANGE(2);
 
-  OCL_MAP_BUFFER_GTT(0);
-  OCL_MAP_BUFFER_GTT(1);
+  // Check result
+  region[0] = w;
+  region[1] = h;
+  region[2] = 1;
+  dst0 = (uint32_t*)malloc(w*h*sizeof(uint32_t));
+  dst1 = (uint32_t*)malloc(w*h*sizeof(uint32_t));
+  OCL_READ_IMAGE(buf[0], origin, region, dst0);
+  OCL_READ_IMAGE(buf[1], origin, region, dst1);
+
   for (int j = 0; j < h; ++j) {
     for (int i = 0; i < w; i++) {
       // Because the array index will not join the sample caculation, the result should
       // be different between the 2D and 1D_array.
       if (j % 2 == 0)
-        OCL_ASSERT(((uint32_t*)buf_data[0])[j * w + i] == ((uint32_t*)buf_data[1])[j * w + i]);
+        OCL_ASSERT(dst0[j * w + i] == dst1[j * w + i]);
     }
   }
-  OCL_UNMAP_BUFFER_GTT(0);
-  OCL_UNMAP_BUFFER_GTT(1);
 
+  free(dst0);
+  free(dst1);
   OCL_CALL(clReleaseSampler, sampler);
 }
 
-- 
1.7.9.5