1 files changed, 93 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/IndexDataManager.h b/gfx/angle/src/libANGLE/renderer/d3d/IndexDataManager.h
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index 000000000..44eb68c07
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+++ b/gfx/angle/src/libANGLE/renderer/d3d/IndexDataManager.h
@@ -0,0 +1,93 @@
+//
+// Copyright (c) 2002-2014 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.
+//
+
+// IndexDataManager.h: Defines the IndexDataManager, a class that
+// runs the Buffer translation process for index buffers.
+
+#ifndef LIBANGLE_INDEXDATAMANAGER_H_
+#define LIBANGLE_INDEXDATAMANAGER_H_
+
+#include <GLES2/gl2.h>
+
+#include "common/angleutils.h"
+#include "common/mathutil.h"
+#include "libANGLE/Error.h"
+#include "libANGLE/renderer/d3d/RendererD3D.h"
+
+namespace
+{
+    enum { INITIAL_INDEX_BUFFER_SIZE = 4096 * sizeof(GLuint) };
+}
+
+namespace gl
+{
+class Buffer;
+}
+
+namespace rx
+{
+class IndexBufferInterface;
+class StaticIndexBufferInterface;
+class StreamingIndexBufferInterface;
+class IndexBuffer;
+class BufferD3D;
+class RendererD3D;
+
+struct SourceIndexData
+{
+    BufferD3D *srcBuffer;
+    const GLvoid *srcIndices;
+    unsigned int srcCount;
+    GLenum srcIndexType;
+    bool srcIndicesChanged;
+};
+
+struct TranslatedIndexData
+{
+    gl::IndexRange indexRange;
+    unsigned int startIndex;
+    unsigned int startOffset;   // In bytes
+
+    IndexBuffer *indexBuffer;
+    BufferD3D *storage;
+    GLenum indexType;
+    unsigned int serial;
+
+    SourceIndexData srcIndexData;
+};
+
+class IndexDataManager : angle::NonCopyable
+{
+  public:
+    explicit IndexDataManager(BufferFactoryD3D *factory, RendererClass rendererClass);
+    virtual ~IndexDataManager();
+
+    gl::Error prepareIndexData(GLenum srcType,
+                               GLsizei count,
+                               gl::Buffer *glBuffer,
+                               const GLvoid *indices,
+                               TranslatedIndexData *translated,
+                               bool primitiveRestartFixedIndexEnabled);
+
+  private:
+    gl::Error streamIndexData(const GLvoid *data,
+                              unsigned int count,
+                              GLenum srcType,
+                              GLenum dstType,
+                              bool usePrimitiveRestartFixedIndex,
+                              TranslatedIndexData *translated);
+    gl::Error getStreamingIndexBuffer(GLenum destinationIndexType,
+                                      IndexBufferInterface **outBuffer);
+
+    BufferFactoryD3D *const mFactory;
+    RendererClass mRendererClass;
+    StreamingIndexBufferInterface *mStreamingBufferShort;
+    StreamingIndexBufferInterface *mStreamingBufferInt;
+};
+
+}
+
+#endif   // LIBANGLE_INDEXDATAMANAGER_H_