Hash :
cd9458d9
Author :
Date :
2012-12-20T21:10:09
Created InputLayoutCache for D3D11 input layouts and vertex buffer application. TRAC #22235 Author: Geoff Lang Signed-off-by: Shannon Woods Signed-off-by: Daniel Koch git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1609 736b8ea6-26fd-11df-bfd4-992fa37f6226
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//
// 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 LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
#define LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
#include "libGLESv2/Context.h"
#include "libGLESv2/renderer/VertexDataManager.h"
#include <D3D11.h>
#include <unordered_map>
namespace rx
{
class InputLayoutCache
{
public:
InputLayoutCache();
virtual ~InputLayoutCache();
void initialize(ID3D11Device *device, ID3D11DeviceContext *context);
void clear();
GLenum applyVertexBuffers(TranslatedAttribute attributes[gl::MAX_VERTEX_ATTRIBS],
gl::ProgramBinary *programBinary);
private:
DISALLOW_COPY_AND_ASSIGN(InputLayoutCache);
struct InputLayoutKey
{
unsigned int elementCount;
D3D11_INPUT_ELEMENT_DESC elements[gl::MAX_VERTEX_ATTRIBS];
};
struct InputLayoutCounterPair
{
ID3D11InputLayout *inputLayout;
unsigned long long lastUsedTime;
};
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;
};
}
#endif // LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_