dom/canvas/WebGLUniformLocation.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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_UNIFORM_LOCATION_H_
   7 #define WEBGL_UNIFORM_LOCATION_H_
   8
   9 #include "WebGLObjectModel.h"
  10 #include "WebGLUniformInfo.h"
  11
  12 namespace mozilla {
  13
  14 class WebGLProgram;
  15
  16 class WebGLUniformLocation MOZ_FINAL
  17     : public WebGLContextBoundObject
  18 {
  19 public:
  20     WebGLUniformLocation(WebGLContext* context, WebGLProgram* program,
  21                          GLint location, const WebGLUniformInfo& info);
  22
  23     // needed for certain helper functions like ValidateObject.
  24     // WebGLUniformLocation's can't be 'Deleted' in the WebGL sense.
  25     bool IsDeleted() const { return false; }
  26
  27     const WebGLUniformInfo& Info() const { return mInfo; }
  28
  29     WebGLProgram* Program() const { return mProgram; }
  30     GLint Location() const { return mLocation; }
  31     uint32_t ProgramGeneration() const { return mProgramGeneration; }
  32     int ElementSize() const { return mElementSize; }
  33
  34     JSObject* WrapObject(JSContext* cx);
  35
  36     NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLUniformLocation)
  37     NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(WebGLUniformLocation)
  38
  39 protected:
  40     ~WebGLUniformLocation() { }
  41
  42     // nsRefPtr, not WebGLRefPtr, so that we don't prevent the program from being explicitly deleted.
  43     // we just want to avoid having a dangling pointer.
  44     nsRefPtr<WebGLProgram> mProgram;
  45
  46     uint32_t mProgramGeneration;
  47     GLint mLocation;
  48     WebGLUniformInfo mInfo;
  49     int mElementSize;
  50     friend class WebGLProgram;
  51 };
  52
  53 } // namespace mozilla
  54
  55 #endif // WEBGL_UNIFORM_LOCATION_H_