1 files changed, 80 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/renderer/d3d/BufferD3D.cpp b/src/3rdparty/angle/src/libANGLE/renderer/d3d/BufferD3D.cpp
new file mode 100644
index 0000000000..1af8794356
--- /dev/null
+++ b/src/3rdparty/angle/src/libANGLE/renderer/d3d/BufferD3D.cpp
@@ -0,0 +1,80 @@
+//
+// Copyright 2014 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.
+//
+
+// BufferD3D.cpp Defines common functionality between the Buffer9 and Buffer11 classes.
+
+#include "libANGLE/renderer/d3d/BufferD3D.h"
+
+#include "libANGLE/renderer/d3d/IndexBuffer.h"
+#include "libANGLE/renderer/d3d/VertexBuffer.h"
+
+namespace rx
+{
+
+unsigned int BufferD3D::mNextSerial = 1;
+
+BufferD3D::BufferD3D(BufferFactoryD3D *factory)
+    : BufferImpl(),
+      mFactory(factory),
+      mStaticVertexBuffer(nullptr),
+      mStaticIndexBuffer(nullptr),
+      mUnmodifiedDataUse(0)
+{
+    updateSerial();
+}
+
+BufferD3D::~BufferD3D()
+{
+    SafeDelete(mStaticVertexBuffer);
+    SafeDelete(mStaticIndexBuffer);
+}
+
+void BufferD3D::updateSerial()
+{
+    mSerial = mNextSerial++;
+}
+
+void BufferD3D::initializeStaticData()
+{
+    if (!mStaticVertexBuffer)
+    {
+        mStaticVertexBuffer = new StaticVertexBufferInterface(mFactory);
+    }
+    if (!mStaticIndexBuffer)
+    {
+        mStaticIndexBuffer = new StaticIndexBufferInterface(mFactory);
+    }
+}
+
+void BufferD3D::invalidateStaticData()
+{
+    if ((mStaticVertexBuffer && mStaticVertexBuffer->getBufferSize() != 0) || (mStaticIndexBuffer && mStaticIndexBuffer->getBufferSize() != 0))
+    {
+        SafeDelete(mStaticVertexBuffer);
+        SafeDelete(mStaticIndexBuffer);
+
+        // Re-init static data to track that we're in a static buffer
+        initializeStaticData();
+    }
+
+    mUnmodifiedDataUse = 0;
+}
+
+// Creates static buffers if sufficient used data has been left unmodified
+void BufferD3D::promoteStaticUsage(int dataSize)
+{
+    if (!mStaticVertexBuffer && !mStaticIndexBuffer)
+    {
+        mUnmodifiedDataUse += dataSize;
+
+        if (mUnmodifiedDataUse > 3 * getSize())
+        {
+            initializeStaticData();
+        }
+    }
+}
+
+}
+\ No newline at end of file