1 files changed, 103 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h b/src/3rdparty/angle/src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h
new file mode 100644
index 0000000000..2c94c57595
--- /dev/null
+++ b/src/3rdparty/angle/src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h
@@ -0,0 +1,103 @@
+//
+// Copyright (c) 2012 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.
+//
+
+// InputLayoutCache.h: Defines InputLayoutCache, a class that builds and caches
+// D3D11 input layouts.
+
+#ifndef LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
+#define LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
+
+#include "libANGLE/Constants.h"
+#include "libANGLE/Error.h"
+#include "common/angleutils.h"
+
+#include <GLES2/gl2.h>
+
+#include <cstddef>
+#include <unordered_map>
+
+namespace gl
+{
+class Program;
+}
+
+namespace rx
+{
+struct TranslatedAttribute;
+
+class InputLayoutCache : angle::NonCopyable
+{
+  public:
+    InputLayoutCache();
+    virtual ~InputLayoutCache();
+
+    void initialize(ID3D11Device *device, ID3D11DeviceContext *context);
+    void clear();
+    void markDirty();
+
+    gl::Error applyVertexBuffers(TranslatedAttribute attributes[gl::MAX_VERTEX_ATTRIBS],
+                                 GLenum mode, gl::Program *program);
+
+  private:
+    struct InputLayoutElement
+    {
+        D3D11_INPUT_ELEMENT_DESC desc;
+        GLenum glslElementType;
+    };
+
+    struct InputLayoutKey
+    {
+        unsigned int elementCount;
+        InputLayoutElement elements[gl::MAX_VERTEX_ATTRIBS];
+
+        const char *begin() const
+        {
+            return reinterpret_cast<const char*>(&elementCount);
+        }
+
+        const char *end() const
+        {
+            return reinterpret_cast<const char*>(&elements[elementCount]);
+        }
+    };
+
+    struct InputLayoutCounterPair
+    {
+        ID3D11InputLayout *inputLayout;
+        unsigned long long lastUsedTime;
+    };
+
+    ID3D11InputLayout *mCurrentIL;
+    ID3D11Buffer *mCurrentBuffers[gl::MAX_VERTEX_ATTRIBS];
+    UINT mCurrentVertexStrides[gl::MAX_VERTEX_ATTRIBS];
+    UINT mCurrentVertexOffsets[gl::MAX_VERTEX_ATTRIBS];
+
+    ID3D11Buffer *mPointSpriteVertexBuffer;
+    ID3D11Buffer *mPointSpriteIndexBuffer;
+
+    static std::size_t hashInputLayout(const InputLayoutKey &inputLayout);
+    static bool compareInputLayouts(const InputLayoutKey &a, const InputLayoutKey &b);
+
+    typedef std::size_t (*InputLayoutHashFunction)(const InputLayoutKey &);
+    typedef bool (*InputLayoutEqualityFunction)(const InputLayoutKey &, const InputLayoutKey &);
+    typedef std::unordered_map<InputLayoutKey,
+                               InputLayoutCounterPair,
+                               InputLayoutHashFunction,
+                               InputLayoutEqualityFunction> InputLayoutMap;
+    InputLayoutMap mInputLayoutMap;
+
+    static const unsigned int kMaxInputLayouts;
+
+    unsigned long long mCounter;
+
+    ID3D11Device *mDevice;
+    ID3D11DeviceContext *mDeviceContext;
+    D3D_FEATURE_LEVEL mFeatureLevel;
+};
+
+}
+
+#endif // LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_