dom/canvas/WebGLFramebufferAttachable.cpp

   1 /* -*- Mode: C++; tab-width: 20; 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 #include "WebGLContext.h"
   7 #include "WebGLFramebufferAttachable.h"
   8 #include "WebGLFramebuffer.h"
   9 #include "WebGLRenderbuffer.h"
  10 #include "WebGLTexture.h"
  11
  12 using namespace mozilla;
  13
  14 void
  15 WebGLFramebufferAttachable::AttachTo(WebGLFramebuffer* fb, GLenum attachment)
  16 {
  17     MOZ_ASSERT(fb);
  18     if (!fb)
  19         return;
  20
  21     if (mAttachmentPoints.Contains(AttachmentPoint(fb, attachment)))
  22         return; // Already attached. Ignore.
  23
  24     mAttachmentPoints.AppendElement(AttachmentPoint(fb, attachment));
  25 }
  26
  27 void
  28 WebGLFramebufferAttachable::DetachFrom(WebGLFramebuffer* fb, GLenum attachment)
  29 {
  30     MOZ_ASSERT(fb);
  31     if (!fb)
  32         return;
  33
  34     const size_t i = mAttachmentPoints.IndexOf(AttachmentPoint(fb, attachment));
  35     if (i == mAttachmentPoints.NoIndex) {
  36         MOZ_ASSERT(false, "Is not attached to FB");
  37         return;
  38     }
  39
  40     mAttachmentPoints.RemoveElementAt(i);
  41 }
  42
  43 void
  44 WebGLFramebufferAttachable::NotifyFBsStatusChanged()
  45 {
  46     for (size_t i = 0; i < mAttachmentPoints.Length(); ++i) {
  47         MOZ_ASSERT(mAttachmentPoints[i].mFB,
  48                    "Unexpected null pointer; seems that a WebGLFramebuffer forgot to call DetachFrom before dying");
  49         mAttachmentPoints[i].mFB->NotifyAttachableChanged();
  50     }
  51 }