kc3-lang/angle/src/libANGLE/renderer/renderer_utils.h

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• Hash : 4928b7ca
  Author :
  Date : 2017-06-20T12:57:39
  

  Proliferate gl::Context everywhere.
  
  This gives the D3D back-end access to the GL state almost anywhere.
  This uses the onDestroy hook for Textures to push errors up from
  destructors, although they still don't quite make it to the Context.
  
  There are places, such as in EGL object (Context/Surface) destruction,
  where we end up calling through to GL implementation internals without
  having access to a gl::Context. We handle this via a proxy Context
  to a Display, basically a null context, that has access to impl-side
  state like the Renderer pointer if necessary. It does not have access
  to the normal GL state.
  
  Also Pass gl::Context to RefCountObject::release(). Since we're using
  destroy() methods now, we should not ever call the destructor directly.
  
  BUG=angleproject:1156
  
  Change-Id: Ie4c32ad6bf6caaff0289901f30b5c6bafa2ce259
  Reviewed-on: https://chromium-review.googlesource.com/529707
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/renderer_utils.h

• //
  // Copyright 2016 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.
  //
  // renderer_utils:
  //   Helper methods pertaining to most or all back-ends.
  //
  
  #ifndef LIBANGLE_RENDERER_RENDERER_UTILS_H_
  #define LIBANGLE_RENDERER_RENDERER_UTILS_H_
  
  #include <cstdint>
  
  #include <limits>
  #include <map>
  
  #include "common/angleutils.h"
  #include "libANGLE/angletypes.h"
  
  namespace angle
  {
  struct Format;
  }
  
  namespace gl
  {
  struct FormatType;
  struct InternalFormat;
  }
  
  namespace rx
  {
  
  class ResourceSerial
  {
    public:
      constexpr ResourceSerial() : mValue(kDirty) {}
      constexpr ResourceSerial(uintptr_t value) : mValue(value) {}
      constexpr bool operator==(ResourceSerial other) const { return mValue == other.mValue; }
      constexpr bool operator!=(ResourceSerial other) const { return mValue != other.mValue; }
  
      void dirty() { mValue = kDirty; }
  
    private:
      constexpr static uintptr_t kDirty = std::numeric_limits<uintptr_t>::max();
  
      uintptr_t mValue;
  };
  
  class SerialFactory;
  
  class Serial final
  {
    public:
      constexpr Serial() : mValue(0) {}
      constexpr Serial(const Serial &other) = default;
      Serial &operator=(const Serial &other) = default;
  
      constexpr bool operator==(const Serial &other) const { return mValue == other.mValue; }
      constexpr bool operator!=(const Serial &other) const { return mValue != other.mValue; }
      constexpr bool operator>(const Serial &other) const { return mValue > other.mValue; }
      constexpr bool operator>=(const Serial &other) const { return mValue >= other.mValue; }
      constexpr bool operator<(const Serial &other) const { return mValue < other.mValue; }
      constexpr bool operator<=(const Serial &other) const { return mValue <= other.mValue; }
  
    private:
      friend class SerialFactory;
      constexpr explicit Serial(uint64_t value) : mValue(value) {}
      uint64_t mValue;
  };
  
  class SerialFactory final : angle::NonCopyable
  {
    public:
      SerialFactory() : mSerial(1) {}
  
      Serial generate()
      {
          ASSERT(mSerial != std::numeric_limits<uint64_t>::max());
          return Serial(mSerial++);
      }
  
    private:
      uint64_t mSerial;
  };
  
  using MipGenerationFunction = void (*)(size_t sourceWidth,
                                         size_t sourceHeight,
                                         size_t sourceDepth,
                                         const uint8_t *sourceData,
                                         size_t sourceRowPitch,
                                         size_t sourceDepthPitch,
                                         uint8_t *destData,
                                         size_t destRowPitch,
                                         size_t destDepthPitch);
  
  typedef void (*ColorReadFunction)(const uint8_t *source, uint8_t *dest);
  typedef void (*ColorWriteFunction)(const uint8_t *source, uint8_t *dest);
  typedef void (*ColorCopyFunction)(const uint8_t *source, uint8_t *dest);
  
  class FastCopyFunctionMap
  {
    public:
      struct Entry
      {
          GLenum format;
          GLenum type;
          ColorCopyFunction func;
      };
  
      constexpr FastCopyFunctionMap() : FastCopyFunctionMap(nullptr, 0) {}
  
      constexpr FastCopyFunctionMap(const Entry *data, size_t size) : mSize(size), mData(data) {}
  
      bool has(const gl::FormatType &formatType) const;
      ColorCopyFunction get(const gl::FormatType &formatType) const;
  
    private:
      size_t mSize;
      const Entry *mData;
  };
  
  struct PackPixelsParams : private angle::NonCopyable
  {
      PackPixelsParams();
      PackPixelsParams(const gl::Rectangle &area,
                       GLenum format,
                       GLenum type,
                       GLuint outputPitch,
                       const gl::PixelPackState &pack,
                       ptrdiff_t offset);
      PackPixelsParams(const gl::Context *context, const PackPixelsParams &other);
  
      gl::Rectangle area;
      GLenum format;
      GLenum type;
      GLuint outputPitch;
      gl::Buffer *packBuffer;
      gl::PixelPackState pack;
      ptrdiff_t offset;
  };
  
  void PackPixels(const PackPixelsParams &params,
                  const angle::Format &sourceFormat,
                  int inputPitch,
                  const uint8_t *source,
                  uint8_t *destination);
  
  ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType);
  ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions,
                                        const gl::FormatType &formatType);
  
  using InitializeTextureDataFunction = void (*)(size_t width,
                                                 size_t height,
                                                 size_t depth,
                                                 uint8_t *output,
                                                 size_t outputRowPitch,
                                                 size_t outputDepthPitch);
  
  using LoadImageFunction = void (*)(size_t width,
                                     size_t height,
                                     size_t depth,
                                     const uint8_t *input,
                                     size_t inputRowPitch,
                                     size_t inputDepthPitch,
                                     uint8_t *output,
                                     size_t outputRowPitch,
                                     size_t outputDepthPitch);
  
  struct LoadImageFunctionInfo
  {
      LoadImageFunctionInfo() : loadFunction(nullptr), requiresConversion(false) {}
      LoadImageFunctionInfo(LoadImageFunction loadFunction, bool requiresConversion)
          : loadFunction(loadFunction), requiresConversion(requiresConversion)
      {
      }
  
      LoadImageFunction loadFunction;
      bool requiresConversion;
  };
  
  using LoadFunctionMap = LoadImageFunctionInfo (*)(GLenum);
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_RENDERER_UTILS_H_
  

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