dom/canvas/WebGLShader.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_H_
   7 #define WEBGL_SHADER_H_
   8
   9 #include <map>
  10 #include <memory>
  11 #include <string>
  12 #include <vector>
  13
  14 #include "GLDefs.h"
  15 #include "mozilla/MemoryReporting.h"
  16
  17 #include "WebGLObjectModel.h"
  18
  19 namespace mozilla {
  20
  21 namespace webgl {
  22 class ShaderValidatorResults;
  23 }  // namespace webgl
  24
  25 class WebGLShader final : public WebGLContextBoundObject {
  26   friend class WebGLContext;
  27   friend class WebGLProgram;
  28
  29   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLShader, override)
  30
  31  public:
  32   WebGLShader(WebGLContext* webgl, GLenum type);
  33
  34  protected:
  35   ~WebGLShader() override;
  36
  37  public:
  38   // GL funcs
  39   void CompileShader();
  40   void ShaderSource(const std::string& source);
  41
  42   // Util funcs
  43   size_t CalcNumSamplerUniforms() const;
  44   size_t NumAttributes() const;
  45
  46   const auto& CompileResults() const { return mCompileResults; }
  47   const auto& CompileLog() const { return mCompilationLog; }
  48   bool IsCompiled() const { return mCompilationSuccessful; }
  49
  50  private:
  51   void BindAttribLocation(GLuint prog, const std::string& userName,
  52                           GLuint index) const;
  53   void MapTransformFeedbackVaryings(
  54       const std::vector<std::string>& varyings,
  55       std::vector<std::string>* out_mappedVaryings) const;
  56
  57  public:
  58   // Other funcs
  59   size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
  60
  61  public:
  62   const GLuint mGLName;
  63   const GLenum mType;
  64
  65  protected:
  66   std::string mSource;
  67
  68   std::unique_ptr<const webgl::ShaderValidatorResults>
  69       mCompileResults;  // Never null.
  70   bool mCompilationSuccessful = false;
  71   std::string mCompilationLog;
  72 };
  73
  74 }  // namespace mozilla
  75
  76 #endif  // WEBGL_SHADER_H_