From 260269a9a5e3a941b0f03b1563d381444279cb7b Mon Sep 17 00:00:00 2001
From: Yan Wang <yan.wang@linux.intel.com>
Date: Tue, 16 May 2017 19:03:25 +0800
Subject: Add image use_hostptr benchmark case for testing large image
 operations.

It is for testing large image with TILE_Y mode.

Signed-off-by: Yan Wang <yan.wang@linux.intel.com>
Reviewed-by: Yang Rong <rong.r.yang@intel.com>
---
 benchmark/CMakeLists.txt                         |  1 +
 benchmark/benchmark_use_host_ptr_large_image.cpp | 84 ++++++++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 benchmark/benchmark_use_host_ptr_large_image.cpp

diff --git a/benchmark/CMakeLists.txt b/benchmark/CMakeLists.txt
index f9b246b7..4c43daf8 100644
--- a/benchmark/CMakeLists.txt
+++ b/benchmark/CMakeLists.txt
@@ -13,6 +13,7 @@ set (benchmark_sources
   ../utests/vload_bench.cpp
   benchmark_copy_buf.cpp
   benchmark_use_host_ptr_buffer.cpp
+  benchmark_use_host_ptr_large_image.cpp
   benchmark_read_buffer.cpp
   benchmark_read_image.cpp
   benchmark_copy_buffer_to_image.cpp
diff --git a/benchmark/benchmark_use_host_ptr_large_image.cpp b/benchmark/benchmark_use_host_ptr_large_image.cpp
new file mode 100644
index 00000000..c943a876
--- /dev/null
+++ b/benchmark/benchmark_use_host_ptr_large_image.cpp
@@ -0,0 +1,84 @@
+#include "utests/utest_helper.hpp"
+#include <sys/time.h>
+#include <string.h>
+
+double benchmark_use_host_ptr_large_image(void)
+{
+  struct timeval start,stop;
+
+  const size_t w = 4096;
+  const size_t h = 4096;
+
+  cl_image_format format;
+  cl_image_desc desc;
+
+  memset(&desc, 0x0, sizeof(cl_image_desc));
+  memset(&format, 0x0, sizeof(cl_image_format));
+
+  format.image_channel_order = CL_RGBA;
+  format.image_channel_data_type = CL_UNSIGNED_INT32;
+  desc.image_type = CL_MEM_OBJECT_IMAGE2D;
+  desc.image_width = w;
+  desc.image_height = h;
+
+  size_t alignment = 4096;  //page size
+  if (cl_check_beignet())
+    alignment = 64;     //cacheline size, beignet has loose limitaiont to enable userptr
+
+  //src image
+  int ret = posix_memalign(&buf_data[0], alignment, sizeof(uint32_t) * w * h * 4);
+  OCL_ASSERT(ret == 0);
+  for (size_t i = 0; i < w*h*4; ++i)
+    ((uint32_t*)buf_data[0])[i] = i;
+
+  OCL_CREATE_IMAGE(buf[0], CL_MEM_USE_HOST_PTR, &format, &desc, buf_data[0]);
+
+  //dst image
+  ret = posix_memalign(&buf_data[1], alignment, sizeof(uint32_t) * w * h * 4);
+  OCL_ASSERT(ret == 0);
+  for (size_t i = 0; i < w*h*4; ++i)
+    ((uint32_t*)buf_data[1])[i] = 0;
+
+  OCL_CREATE_IMAGE(buf[1], CL_MEM_USE_HOST_PTR, &format, &desc, buf_data[1]);
+
+  OCL_CREATE_KERNEL("runtime_use_host_ptr_image");
+
+  // Run the kernel
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  globals[0] = w;
+  globals[1] = h;
+  locals[0] = 16;
+  locals[1] = 16;
+
+  size_t origin[3];
+  origin[0] = 0;
+  origin[1] = 0;
+  origin[2] = 0;
+  size_t region[3];
+  region[0] = w;
+  region[1] = h;
+  region[2] = 1;
+  size_t pitch = 0;
+
+  gettimeofday(&start,0);
+  for (size_t i=0; i<100; i++) {
+    OCL_NDRANGE(2);
+    void* mapptr = (int*)clEnqueueMapImage(queue, buf[1], CL_TRUE, CL_MAP_READ, origin,
+      region, &pitch, NULL, 0, NULL, NULL, NULL);
+    OCL_ASSERT(mapptr == buf_data[1]);
+    clEnqueueUnmapMemObject(queue, buf[1], mapptr, 0, NULL, NULL);
+  }
+  gettimeofday(&stop,0);
+
+  free(buf_data[0]);
+  buf_data[0] = NULL;
+  free(buf_data[1]);
+  buf_data[1] = NULL;
+
+  double elapsed = time_subtract(&stop, &start, 0);
+
+  return BANDWIDTH(w*h*sizeof(uint32_t)*4*100*2, elapsed);
+}
+
+MAKE_BENCHMARK_FROM_FUNCTION(benchmark_use_host_ptr_large_image, "GB/S");
-- 
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