1 files changed, 63 insertions, 0 deletions
diff --git a/src/deps/skia/include/gpu/vk/GrVkExtensions.h b/src/deps/skia/include/gpu/vk/GrVkExtensions.h
new file mode 100644
index 000000000..e78543dc7
--- /dev/null
+++ b/src/deps/skia/include/gpu/vk/GrVkExtensions.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrVkExtensions_DEFINED
+#define GrVkExtensions_DEFINED
+
+#include "include/core/SkString.h"
+#include "include/gpu/vk/GrVkTypes.h"
+#include "include/private/SkTArray.h"
+
+/**
+ * Helper class that eats in an array of extensions strings for instance and device and allows for
+ * quicker querying if an extension is present.
+ */
+class SK_API GrVkExtensions {
+public:
+    GrVkExtensions() {}
+
+    void init(GrVkGetProc, VkInstance, VkPhysicalDevice,
+              uint32_t instanceExtensionCount, const char* const* instanceExtensions,
+              uint32_t deviceExtensionCount, const char* const* deviceExtensions);
+
+    bool hasExtension(const char[], uint32_t minVersion) const;
+
+    struct Info {
+        Info() {}
+        Info(const char* name) : fName(name), fSpecVersion(0) {}
+
+        SkString fName;
+        uint32_t fSpecVersion;
+
+        struct Less {
+            bool operator()(const Info& a, const SkString& b) const {
+                return strcmp(a.fName.c_str(), b.c_str()) < 0;
+            }
+            bool operator()(const SkString& a, const GrVkExtensions::Info& b) const {
+                return strcmp(a.c_str(), b.fName.c_str()) < 0;
+            }
+        };
+    };
+
+#ifdef SK_DEBUG
+    void dump() const {
+        SkDebugf("**Vulkan Extensions**\n");
+        for (int i = 0; i < fExtensions.count(); ++i) {
+            SkDebugf("%s. Version: %d\n",
+                     fExtensions[i].fName.c_str(), fExtensions[i].fSpecVersion);
+        }
+        SkDebugf("**End Vulkan Extensions**\n");
+    }
+#endif
+
+private:
+    void getSpecVersions(GrVkGetProc getProc, VkInstance, VkPhysicalDevice);
+
+    SkTArray<Info>  fExtensions;
+};
+
+#endif