dom/canvas/WebGLShaderValidator.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef WEBGL_SHADER_VALIDATOR_H_
   7 #define WEBGL_SHADER_VALIDATOR_H_
   8
   9 #include <memory>
  10 #include <string>
  11 #include <unordered_map>
  12
  13 #include "GLDefs.h"
  14 #include "GLSLANG/ShaderLang.h"
  15 #include "nsString.h"
  16
  17 namespace mozilla::webgl {
  18
  19 class ShaderValidatorResults final {
  20  public:
  21   std::string mInfoLog;
  22   bool mValid = false;
  23
  24   std::string mObjectCode;
  25   int mShaderVersion = 0;
  26   int mVertexShaderNumViews = 0;
  27
  28   std::vector<sh::Attribute> mAttributes;
  29   std::vector<sh::InterfaceBlock> mInterfaceBlocks;
  30   std::vector<sh::OutputVariable> mOutputVariables;
  31   std::vector<sh::Uniform> mUniforms;
  32   std::vector<sh::Varying> mVaryings;
  33
  34   std::unordered_map<std::string, std::string> mNameMap;
  35
  36   int mMaxVaryingVectors = 0;
  37
  38   bool mNeeds_webgl_gl_VertexID_Offset = false;
  39
  40   bool CanLinkTo(const ShaderValidatorResults& vert,
  41                  nsCString* const out_log) const;
  42   size_t SizeOfIncludingThis(mozilla::MallocSizeOf) const;
  43 };
  44
  45 class ShaderValidator final {
  46  public:
  47   const ShHandle mHandle;
  48
  49  private:
  50   const ShCompileOptions mCompileOptions;
  51   const int mMaxVaryingVectors;
  52
  53  public:
  54   bool mIfNeeded_webgl_gl_VertexID_Offset = false;
  55
  56   static std::unique_ptr<ShaderValidator> Create(
  57       GLenum shaderType, ShShaderSpec spec, ShShaderOutput outputLanguage,
  58       const ShBuiltInResources& resources, ShCompileOptions compileOptions);
  59
  60  private:
  61   ShaderValidator(ShHandle handle, ShCompileOptions compileOptions,
  62                   int maxVaryingVectors)
  63       : mHandle(handle),
  64         mCompileOptions(compileOptions),
  65         mMaxVaryingVectors(maxVaryingVectors) {}
  66
  67  public:
  68   ~ShaderValidator();
  69
  70   std::unique_ptr<const ShaderValidatorResults> ValidateAndTranslate(
  71       const char*) const;
  72 };
  73
  74 }  // namespace mozilla::webgl
  75
  76 #endif  // WEBGL_SHADER_VALIDATOR_H_