1 files changed, 54 insertions, 0 deletions
diff --git a/src/libOpenCL/dispatch.cpp b/src/libOpenCL/dispatch.cpp
new file mode 100644
index 0000000000..facb625243
--- /dev/null
+++ b/src/libOpenCL/dispatch.cpp
@@ -0,0 +1,54 @@
+//
+// Copyright 2021 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// dispatch.cpp: Implements a function to fetch the ANGLE OpenCL dispatch table.
+
+#include "libOpenCL/dispatch.h"
+
+#include "anglebase/no_destructor.h"
+#include "common/system_utils.h"
+
+#include <iostream>
+#include <memory>
+
+namespace cl
+{
+
+namespace
+{
+std::unique_ptr<angle::Library> &EntryPointsLib()
+{
+    static angle::base::NoDestructor<std::unique_ptr<angle::Library>> sEntryPointsLib;
+    return *sEntryPointsLib;
+}
+}  // anonymous namespace
+
+cl_icd_dispatch &GetDispatch()
+{
+    static cl_icd_dispatch *sDispatch = nullptr;
+
+    if (sDispatch == nullptr)
+    {
+        EntryPointsLib().reset(
+            angle::OpenSharedLibrary(ANGLE_GLESV2_LIBRARY_NAME, angle::SearchType::ApplicationDir));
+        if (EntryPointsLib())
+        {
+            sDispatch = reinterpret_cast<cl_icd_dispatch *>(
+                EntryPointsLib()->getSymbol("gCLIcdDispatchTable"));
+            if (sDispatch == nullptr)
+            {
+                std::cerr << "Error loading CL dispatch table." << std::endl;
+            }
+        }
+        else
+        {
+            std::cerr << "Error opening GLESv2 library." << std::endl;
+        }
+    }
+
+    return *sDispatch;
+}
+
+}  // namespace cl