ui/gl/gl_fence_apple.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gl/gl_fence_apple.h"
   6
   7 #include "ui/gl/gl_bindings.h"
   8 #include "ui/gl/gl_context.h"
   9
  10 namespace gfx {
  11
  12 GLFenceAPPLE::GLFenceAPPLE(bool flush) {
  13   glGenFencesAPPLE(1, &fence_);
  14   glSetFenceAPPLE(fence_);
  15   DCHECK(glIsFenceAPPLE(fence_));
  16   if (flush) {
  17     glFlush();
  18   } else {
  19     flush_event_ = GLContext::GetCurrent()->SignalFlush();
  20   }
  21 }
  22
  23 bool GLFenceAPPLE::HasCompleted() {
  24   DCHECK(glIsFenceAPPLE(fence_));
  25   return !!glTestFenceAPPLE(fence_);
  26 }
  27
  28 void GLFenceAPPLE::ClientWait() {
  29   DCHECK(glIsFenceAPPLE(fence_));
  30   if (!flush_event_.get() || flush_event_->IsSignaled()) {
  31     glFinishFenceAPPLE(fence_);
  32   } else {
  33     LOG(ERROR) << "Trying to wait for uncommitted fence. Skipping...";
  34   }
  35 }
  36
  37 void GLFenceAPPLE::ServerWait() {
  38   DCHECK(glIsFenceAPPLE(fence_));
  39   ClientWait();
  40 }
  41
  42 GLFenceAPPLE::~GLFenceAPPLE() {
  43   DCHECK(glIsFenceAPPLE(fence_));
  44   glDeleteFencesAPPLE(1, &fence_);
  45 }
  46
  47 }  // namespace gfx