kc3-lang/angle/src/compiler/translator/InfoSink.h

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• Hash : 776c6015
  Author :
  Date : 2021-02-26T00:00:57
  

  Vulkan: Call glslang at compile time
  
  With this change, the ANGLE translator immediately compiles the
  generated GLSL into SPIR-V with glslang and discards the source.  This
  is in preparation for generating SPIR-V directly, by making the frontend
  and backend already able to digest it.
  
  This change also allows the expensive glslang calls to be parallelized,
  improving the following perf test by about 20%:
  
      LinkProgramBenchmark.Run/vulkan_compile_and_link_multi_thread
  
  Previously, the test was run as such in the Vulkan backend:
  
      Main           Thread 1          Thread 2
      Compile1 --->
      Compile2 --------------------->
                    Translator        Translator
               <---
               <---------------------
      Link
  
      glslang
       for
        shader1
  
      glslang
       for
        shader2
  
      Done
  
  With this change, it is run as such:
  
      Main           Thread 1          Thread 2
      Compile1 --->
      Compile2 --------------------->
                    Translator        Translator
                     glslang           glslang
               <---
               <---------------------
      Link
      Done
  
  glslang_wrapper_utils no longer interacts with glslang! A rename will
  follow.
  
  Bug: angleproject:4889
  Change-Id: If4303e8ba0ba43b1a2f47f8c0a9133d0bee1a19a
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2721195
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/InfoSink.h

• //
  // Copyright 2002 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_INFOSINK_H_
  #define COMPILER_TRANSLATOR_INFOSINK_H_
  
  #include <math.h>
  #include <stdlib.h>
  #include "GLSLANG/ShaderLang.h"
  #include "compiler/translator/Common.h"
  #include "compiler/translator/Severity.h"
  
  namespace sh
  {
  
  class ImmutableString;
  class TType;
  
  // Returns the fractional part of the given floating-point number.
  inline float fractionalPart(float f)
  {
      float intPart = 0.0f;
      return modff(f, &intPart);
  }
  
  class ImmutableString;
  
  //
  // Encapsulate info logs for all objects that have them.
  //
  // The methods are a general set of tools for getting a variety of
  // messages and types inserted into the log.
  //
  class TInfoSinkBase
  {
    public:
      TInfoSinkBase() {}
  
      template <typename T>
      TInfoSinkBase &operator<<(const T &t)
      {
          TPersistStringStream stream = sh::InitializeStream<TPersistStringStream>();
          stream << t;
          sink.append(stream.str());
          return *this;
      }
      // Override << operator for specific types. It is faster to append strings
      // and characters directly to the sink.
      TInfoSinkBase &operator<<(char c)
      {
          sink.append(1, c);
          return *this;
      }
      TInfoSinkBase &operator<<(const char *str)
      {
          sink.append(str);
          return *this;
      }
      TInfoSinkBase &operator<<(const TPersistString &str)
      {
          sink.append(str);
          return *this;
      }
      TInfoSinkBase &operator<<(const TString &str)
      {
          sink.append(str.c_str());
          return *this;
      }
      TInfoSinkBase &operator<<(const ImmutableString &str);
  
      TInfoSinkBase &operator<<(const TType &type);
  
      // Make sure floats are written with correct precision.
      TInfoSinkBase &operator<<(float f)
      {
          // Make sure that at least one decimal point is written. If a number
          // does not have a fractional part, the default precision format does
          // not write the decimal portion which gets interpreted as integer by
          // the compiler.
          TPersistStringStream stream = sh::InitializeStream<TPersistStringStream>();
          if (fractionalPart(f) == 0.0f)
          {
              stream.precision(1);
              stream << std::showpoint << std::fixed << f;
          }
          else
          {
              stream.unsetf(std::ios::fixed);
              stream.unsetf(std::ios::scientific);
              stream.precision(8);
              stream << f;
          }
          sink.append(stream.str());
          return *this;
      }
      // Write boolean values as their names instead of integral value.
      TInfoSinkBase &operator<<(bool b)
      {
          const char *str = b ? "true" : "false";
          sink.append(str);
          return *this;
      }
  
      void erase()
      {
          sink.clear();
          binarySink.clear();
      }
      int size() { return static_cast<int>(isBinary() ? binarySink.size() : sink.size()); }
  
      const TPersistString &str() const
      {
          ASSERT(!isBinary());
          return sink;
      }
      const char *c_str() const
      {
          ASSERT(!isBinary());
          return sink.c_str();
      }
  
      void prefix(Severity severity);
      void location(int file, int line);
  
      bool isBinary() const { return !binarySink.empty(); }
      void setBinary(BinaryBlob &&binary) { binarySink = std::move(binary); }
      const BinaryBlob &getBinary() const
      {
          ASSERT(isBinary());
          return binarySink;
      }
  
    private:
      // The data in the info sink is either in human readable form (|sink|) or binary (|binarySink|).
      TPersistString sink;
      BinaryBlob binarySink;
  };
  
  class TInfoSink
  {
    public:
      TInfoSinkBase info;
      TInfoSinkBase debug;
      TInfoSinkBase obj;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_INFOSINK_H_
  

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