WebGLShader.h - mozsearch

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef WEBGL_SHADER_H_

#define WEBGL_SHADER_H_

#include <map>

#include <memory>

#include <string>

#include <vector>

#include "GLDefs.h"

#include "mozilla/MemoryReporting.h"

#include "WebGLObjectModel.h"

namespace mozilla {

namespace webgl {

class ShaderValidatorResults;

}  // namespace webgl

class WebGLShader final : public WebGLContextBoundObject {

  friend class WebGLContext;

  friend class WebGLProgram;

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLShader, override)

 public:

  WebGLShader(WebGLContext* webgl, GLenum type);

 protected:

  ~WebGLShader() override;

 public:

  // GL funcs

  void CompileShader();

  void ShaderSource(const std::string& source);

  // Util funcs

  size_t CalcNumSamplerUniforms() const;

  size_t NumAttributes() const;

  const auto& CompileResults() const { return mCompileResults; }

  const auto& CompileLog() const { return mCompilationLog; }

  bool IsCompiled() const { return mCompilationSuccessful; }

 private:

  void BindAttribLocation(GLuint prog, const std::string& userName,

                          GLuint index) const;

  void MapTransformFeedbackVaryings(

      const std::vector<std::string>& varyings,

      std::vector<std::string>* out_mappedVaryings) const;

 public:

  // Other funcs

  size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;

 public:

  const GLuint mGLName;

  const GLenum mType;

 protected:

  std::string mSource;

  std::unique_ptr<const webgl::ShaderValidatorResults>

      mCompileResults;  // Never null.

  bool mCompilationSuccessful = false;

  std::string mCompilationLog;

};

}  // namespace mozilla

#endif  // WEBGL_SHADER_H_