kc3-lang/angle/src/common/angleutils.h

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• Author : Jamie Madill
  Date : 2015-10-29 10:32:57
  Hash : 4e31ad55
  Message : D3D11: Add dynamic geometry shaders. The geometry shader we want will depend on our current draw mode, and if we're using flat shading in the shader. Without flat shading, we'll still be using them only for point sprites, but for other primitive types with flat shading enabled, we'll be using them to correct the provoking vertex order with D3D11. Note: no new features in this CL, those are turned on in follow-ups. BUG=angleproject:754 Change-Id: Iabf13ffd582f5a7200ee0df5aa9c3671aa7b6ed4 Reviewed-on: https://chromium-review.googlesource.com/309154 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>

• src/common/angleutils.h

• //
  // Copyright (c) 2002-2014 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.
  //
  
  // angleutils.h: Common ANGLE utilities.
  
  #ifndef COMMON_ANGLEUTILS_H_
  #define COMMON_ANGLEUTILS_H_
  
  #include "common/platform.h"
  
  #include <climits>
  #include <cstdarg>
  #include <cstddef>
  #include <string>
  #include <set>
  #include <sstream>
  #include <vector>
  
  // A helper class to disallow copy and assignment operators
  namespace angle
  {
  
  class NonCopyable
  {
    public:
      NonCopyable() = default;
      ~NonCopyable() = default;
    protected:
      NonCopyable(const NonCopyable&) = delete;
      void operator=(const NonCopyable&) = delete;
  };
  
  }
  
  template <typename T, size_t N>
  inline size_t ArraySize(T(&)[N])
  {
      return N;
  }
  
  template <typename T, unsigned int N>
  void SafeRelease(T (&resourceBlock)[N])
  {
      for (unsigned int i = 0; i < N; i++)
      {
          SafeRelease(resourceBlock[i]);
      }
  }
  
  template <typename T>
  void SafeRelease(T& resource)
  {
      if (resource)
      {
          resource->Release();
          resource = NULL;
      }
  }
  
  template <typename T>
  void SafeDelete(T*& resource)
  {
      delete resource;
      resource = NULL;
  }
  
  template <typename T>
  void SafeDeleteContainer(T& resource)
  {
      for (auto &element : resource)
      {
          SafeDelete(element);
      }
      resource.clear();
  }
  
  template <typename T>
  void SafeDeleteArray(T*& resource)
  {
      delete[] resource;
      resource = NULL;
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructLessThan(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) < 0);
  }
  
  // Provide a less-than function for comparing structs
  // Note: struct memory must be initialized to zero, because of packing gaps
  template <typename T>
  inline bool StructEquals(const T &a, const T &b)
  {
      return (memcmp(&a, &b, sizeof(T)) == 0);
  }
  
  template <typename T>
  inline void StructZero(T *obj)
  {
      memset(obj, 0, sizeof(T));
  }
  
  template <typename T>
  inline bool IsMaskFlagSet(T mask, T flag)
  {
      // Handles multibit flags as well
      return (mask & flag) == flag;
  }
  
  inline const char* MakeStaticString(const std::string &str)
  {
      static std::set<std::string> strings;
      std::set<std::string>::iterator it = strings.find(str);
      if (it != strings.end())
      {
          return it->c_str();
      }
  
      return strings.insert(str).first->c_str();
  }
  
  inline std::string ArrayString(unsigned int i)
  {
      // We assume UINT_MAX and GL_INVALID_INDEX are equal
      // See DynamicHLSL.cpp
      if (i == UINT_MAX)
      {
          return "";
      }
  
      std::stringstream strstr;
  
      strstr << "[";
      strstr << i;
      strstr << "]";
  
      return strstr.str();
  }
  
  inline std::string Str(int i)
  {
      std::stringstream strstr;
      strstr << i;
      return strstr.str();
  }
  
  size_t FormatStringIntoVector(const char *fmt, va_list vararg, std::vector<char>& buffer);
  
  std::string FormatString(const char *fmt, va_list vararg);
  std::string FormatString(const char *fmt, ...);
  
  // snprintf is not defined with MSVC prior to to msvc14
  #if defined(_MSC_VER) && _MSC_VER < 1900
  #define snprintf _snprintf
  #endif
  
  #define GL_BGRA4_ANGLEX 0x6ABC
  #define GL_BGR5_A1_ANGLEX 0x6ABD
  #define GL_INT_64_ANGLEX 0x6ABE
  #define GL_STRUCT_ANGLEX 0x6ABF
  
  // Hidden enum for the NULL D3D device type.
  #define EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE 0x6AC0
  
  #endif // COMMON_ANGLEUTILS_H_