michael@0: //
michael@0: // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // InputLayoutCache.h: Defines InputLayoutCache, a class that builds and caches
michael@0: // D3D11 input layouts.
michael@0: 
michael@0: #ifndef LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
michael@0: #define LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
michael@0: 
michael@0: #include "libGLESv2/Constants.h"
michael@0: #include "common/angleutils.h"
michael@0: 
michael@0: namespace gl
michael@0: {
michael@0: class ProgramBinary;
michael@0: }
michael@0: 
michael@0: namespace rx
michael@0: {
michael@0: struct TranslatedAttribute;
michael@0: 
michael@0: class InputLayoutCache
michael@0: {
michael@0:   public:
michael@0:     InputLayoutCache();
michael@0:     virtual ~InputLayoutCache();
michael@0: 
michael@0:     void initialize(ID3D11Device *device, ID3D11DeviceContext *context);
michael@0:     void clear();
michael@0:     void markDirty();
michael@0: 
michael@0:     GLenum applyVertexBuffers(TranslatedAttribute attributes[gl::MAX_VERTEX_ATTRIBS],
michael@0:                               gl::ProgramBinary *programBinary);
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(InputLayoutCache);
michael@0: 
michael@0:     struct InputLayoutKey
michael@0:     {
michael@0:         unsigned int elementCount;
michael@0:         D3D11_INPUT_ELEMENT_DESC elements[gl::MAX_VERTEX_ATTRIBS];
michael@0:         GLenum glslElementType[gl::MAX_VERTEX_ATTRIBS];
michael@0:     };
michael@0: 
michael@0:     struct InputLayoutCounterPair
michael@0:     {
michael@0:         ID3D11InputLayout *inputLayout;
michael@0:         unsigned long long lastUsedTime;
michael@0:     };
michael@0: 
michael@0:     ID3D11InputLayout *mCurrentIL;
michael@0:     unsigned int mCurrentBuffers[gl::MAX_VERTEX_ATTRIBS];
michael@0:     UINT mCurrentVertexStrides[gl::MAX_VERTEX_ATTRIBS];
michael@0:     UINT mCurrentVertexOffsets[gl::MAX_VERTEX_ATTRIBS];
michael@0: 
michael@0:     static std::size_t hashInputLayout(const InputLayoutKey &inputLayout);
michael@0:     static bool compareInputLayouts(const InputLayoutKey &a, const InputLayoutKey &b);
michael@0: 
michael@0:     typedef std::size_t (*InputLayoutHashFunction)(const InputLayoutKey &);
michael@0:     typedef bool (*InputLayoutEqualityFunction)(const InputLayoutKey &, const InputLayoutKey &);
michael@0:     typedef std::unordered_map<InputLayoutKey,
michael@0:                                InputLayoutCounterPair,
michael@0:                                InputLayoutHashFunction,
michael@0:                                InputLayoutEqualityFunction> InputLayoutMap;
michael@0:     InputLayoutMap mInputLayoutMap;
michael@0: 
michael@0:     static const unsigned int kMaxInputLayouts;
michael@0: 
michael@0:     unsigned long long mCounter;
michael@0: 
michael@0:     ID3D11Device *mDevice;
michael@0:     ID3D11DeviceContext *mDeviceContext;
michael@0: };
michael@0: 
michael@0: }
michael@0: 
michael@0: #endif // LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_