kc3-lang/angle/src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h

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• Hash : d3e213bc
  Author :
  Date : 2017-11-27T18:33:41
  

  Add a gl::AttribArray helper type.
  
  This is a generic std::array sized to gl::MAX_VERTEX_ATTRIBS.
  
  Bug: angleproject:2264
  Change-Id: I788659ad25be5708dbab422ac4a16dff60abf154
  Reviewed-on: https://chromium-review.googlesource.com/790750
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h

• //
  // 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 <GLES2/gl2.h>
  
  #include <cstddef>
  
  #include <array>
  #include <map>
  
  #include "common/angleutils.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/SizedMRUCache.h"
  #include "libANGLE/formatutils.h"
  #include "libANGLE/renderer/d3d/RendererD3D.h"
  #include "libANGLE/renderer/d3d/d3d11/ResourceManager11.h"
  
  namespace rx
  {
  class DrawCallVertexParams;
  struct PackedAttributeLayout
  {
      PackedAttributeLayout();
      PackedAttributeLayout(const PackedAttributeLayout &other);
  
      void addAttributeData(GLenum glType,
                            UINT semanticIndex,
                            gl::VertexFormatType vertexFormatType,
                            unsigned int divisor);
  
      bool operator==(const PackedAttributeLayout &other) const;
  
      enum Flags
      {
          FLAG_USES_INSTANCED_SPRITES     = 0x1,
          FLAG_INSTANCED_SPRITES_ACTIVE   = 0x2,
          FLAG_INSTANCED_RENDERING_ACTIVE = 0x4,
      };
  
      uint32_t numAttributes;
      uint32_t flags;
      gl::AttribArray<uint32_t> attributeData;
  };
  }  // namespace rx
  
  namespace std
  {
  template <>
  struct hash<rx::PackedAttributeLayout>
  {
      size_t operator()(const rx::PackedAttributeLayout &value) const
      {
          return angle::ComputeGenericHash(value);
      }
  };
  }  // namespace std
  
  namespace gl
  {
  class Program;
  }  // namespace gl
  
  namespace rx
  {
  struct TranslatedAttribute;
  struct TranslatedIndexData;
  struct SourceIndexData;
  class ProgramD3D;
  class Renderer11;
  
  class InputLayoutCache : angle::NonCopyable
  {
    public:
      InputLayoutCache();
      ~InputLayoutCache();
  
      void clear();
  
      gl::Error applyVertexBuffers(const gl::Context *context,
                                   const std::vector<const TranslatedAttribute *> &currentAttributes,
                                   GLenum mode,
                                   GLint start,
                                   bool isIndexedRendering);
  
      gl::Error updateVertexOffsetsForPointSpritesEmulation(
          Renderer11 *renderer,
          const std::vector<const TranslatedAttribute *> &currentAttributes,
          GLint startVertex,
          GLsizei emulatedInstanceId);
  
      // Useful for testing
      void setCacheSize(size_t newCacheSize);
  
      gl::Error updateInputLayout(Renderer11 *renderer,
                                  const gl::State &state,
                                  const std::vector<const TranslatedAttribute *> &currentAttributes,
                                  GLenum mode,
                                  const AttribIndexArray &sortedSemanticIndices,
                                  const DrawCallVertexParams &vertexParams);
  
    private:
      gl::Error createInputLayout(Renderer11 *renderer,
                                  const AttribIndexArray &sortedSemanticIndices,
                                  const std::vector<const TranslatedAttribute *> &currentAttributes,
                                  GLenum mode,
                                  gl::Program *program,
                                  const DrawCallVertexParams &vertexParams,
                                  d3d11::InputLayout *inputLayoutOut);
  
      // Starting cache size.
      static constexpr size_t kDefaultCacheSize = 1024;
  
      // The cache tries to clean up this many states at once.
      static constexpr size_t kGCLimit = 128;
  
      using LayoutCache = angle::base::HashingMRUCache<PackedAttributeLayout, d3d11::InputLayout>;
      LayoutCache mLayoutCache;
  
      d3d11::Buffer mPointSpriteVertexBuffer;
      d3d11::Buffer mPointSpriteIndexBuffer;
  };
  
  }  // namespace rx
  
  #endif // LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
  

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