Dynamically load the vulkan library in our test tools

Bug: skia:
Change-Id: I7c1f6cbb2b50ca284f40cf4b9ef49a76083b38c6
Reviewed-on: https://skia-review.googlesource.com/68643
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/tools/gpu/vk/VkTestUtils.cpp b/tools/gpu/vk/VkTestUtils.cpp
new file mode 100644
index 0000000000..62fd312ecf
--- /dev/null
+++ b/tools/gpu/vk/VkTestUtils.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "VkTestUtils.h"
+
+#include "../ports/SkOSLibrary.h"
+
+namespace sk_gpu_test {
+
+bool LoadVkLibraryAndGetProcAddrFuncs(PFN_vkGetInstanceProcAddr* instProc,
+                                                   PFN_vkGetDeviceProcAddr* devProc) {
+    static void* vkLib = nullptr;
+    static PFN_vkGetInstanceProcAddr localInstProc = nullptr;
+    static PFN_vkGetDeviceProcAddr localDevProc = nullptr;
+    if (!vkLib) {
+#if defined _WIN32
+        vkLib = DynamicLoadLibrary("vulkan-1.dll");
+#else
+        vkLib = DynamicLoadLibrary("libvulkan.so");
+#endif
+        if (!vkLib) {
+            return false;
+        }
+        localInstProc = (PFN_vkGetInstanceProcAddr) GetProcedureAddress(vkLib,
+                                                                        "vkGetInstanceProcAddr");
+        localDevProc = (PFN_vkGetDeviceProcAddr) GetProcedureAddress(vkLib,
+                                                                     "vkGetDeviceProcAddr");
+    }
+    if (!localInstProc || !localDevProc) {
+        return false;
+    }
+    *instProc = localInstProc;
+    *devProc = localDevProc;
+    return true;
+}
+}