kc3-lang/angle/src/libANGLE/entry_points_utils.h

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• Hash : 8403e4c5
  Author :
  Date : 2022-10-10T20:59:29
  

  EGL: Resource IDs for Surface, Context and EGL Image.
  
  This will make these classes play nicely with resource maps. As these
  objects are used in a lot of places, and simplified C can't handle
  unordered_map, it's necessary to index the maps by simple packed IDs
  in capture/replay code. This indirection will also have increased
  safety as we validate EGL resource ID handle values before accessing
  the memory directly.
  
  Also hides some of the other EGL capture methods behind helper methods
  to simplify the C code and hide assignments and other complex maps.
  
  Bug: angleproject:7758
  Change-Id: Ibc7bb56430d3068bd38877c9dfb011979d4ea234
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3957164
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuxin Hu <yuxinhu@google.com>
  

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• src/libANGLE/entry_points_utils.h

• //
  // Copyright 2018 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.
  //
  // entry_point_utils:
  //   These helpers are used in GL/GLES entry point routines.
  
  #ifndef LIBANGLE_ENTRY_POINT_UTILS_H_
  #define LIBANGLE_ENTRY_POINT_UTILS_H_
  
  #include "angle_gl.h"
  #include "common/Optional.h"
  #include "common/PackedEnums.h"
  #include "common/angleutils.h"
  #include "common/entry_points_enum_autogen.h"
  #include "common/mathutil.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/Display.h"
  
  namespace gl
  {
  // A template struct for determining the default value to return for each entry point.
  template <angle::EntryPoint EP, typename ReturnType>
  struct DefaultReturnValue;
  
  // Default return values for each basic return type.
  template <angle::EntryPoint EP>
  struct DefaultReturnValue<EP, GLint>
  {
      static constexpr GLint kValue = -1;
  };
  
  // This doubles as the GLenum return value.
  template <angle::EntryPoint EP>
  struct DefaultReturnValue<EP, GLuint>
  {
      static constexpr GLuint kValue = 0;
  };
  
  template <angle::EntryPoint EP>
  struct DefaultReturnValue<EP, GLboolean>
  {
      static constexpr GLboolean kValue = GL_FALSE;
  };
  
  template <angle::EntryPoint EP>
  struct DefaultReturnValue<EP, ShaderProgramID>
  {
      static constexpr ShaderProgramID kValue = {0};
  };
  
  // Catch-all rules for pointer types.
  template <angle::EntryPoint EP, typename PointerType>
  struct DefaultReturnValue<EP, const PointerType *>
  {
      static constexpr const PointerType *kValue = nullptr;
  };
  
  template <angle::EntryPoint EP, typename PointerType>
  struct DefaultReturnValue<EP, PointerType *>
  {
      static constexpr PointerType *kValue = nullptr;
  };
  
  // Overloaded to return invalid index
  template <>
  struct DefaultReturnValue<angle::EntryPoint::GLGetUniformBlockIndex, GLuint>
  {
      static constexpr GLuint kValue = GL_INVALID_INDEX;
  };
  
  // Specialized enum error value.
  template <>
  struct DefaultReturnValue<angle::EntryPoint::GLClientWaitSync, GLenum>
  {
      static constexpr GLenum kValue = GL_WAIT_FAILED;
  };
  
  // glTestFenceNV should still return TRUE for an invalid fence.
  template <>
  struct DefaultReturnValue<angle::EntryPoint::GLTestFenceNV, GLboolean>
  {
      static constexpr GLboolean kValue = GL_TRUE;
  };
  
  template <angle::EntryPoint EP, typename ReturnType>
  constexpr ANGLE_INLINE ReturnType GetDefaultReturnValue()
  {
      return DefaultReturnValue<EP, ReturnType>::kValue;
  }
  
  #if ANGLE_CAPTURE_ENABLED
  #    define ANGLE_CAPTURE_GL(Func, ...) CaptureGLCallToFrameCapture(Capture##Func, __VA_ARGS__)
  #else
  #    define ANGLE_CAPTURE_GL(...)
  #endif  // ANGLE_CAPTURE_ENABLED
  
  #define EGL_EVENT(EP, FMT, ...) EVENT(nullptr, EGL##EP, FMT, ##__VA_ARGS__)
  
  inline int CID(const Context *context)
  {
      return context == nullptr ? 0 : static_cast<int>(context->id().value);
  }
  }  // namespace gl
  
  namespace egl
  {
  inline int CID(EGLDisplay display, EGLContext context)
  {
      const egl::Display *displayPtr = reinterpret_cast<const egl::Display *>(display);
      if (!Display::isValidDisplay(displayPtr))
      {
          return -1;
      }
      gl::ContextID contextID = {static_cast<GLuint>(reinterpret_cast<uintptr_t>(context))};
      if (!displayPtr->isValidContext(contextID))
      {
          return -1;
      }
      return contextID.value;
  }
  
  #if ANGLE_CAPTURE_ENABLED
  #    define ANGLE_CAPTURE_EGL(Func, ...) CaptureEGLCallToFrameCapture(Capture##Func, __VA_ARGS__)
  #else
  #    define ANGLE_CAPTURE_EGL(...)
  #endif  // ANGLE_CAPTURE_ENABLED
  }  // namespace egl
  
  #endif  // LIBANGLE_ENTRY_POINT_UTILS_H_
  

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