dom/canvas/WebGL2ContextSync.cpp

   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 #include "WebGL2Context.h"
   7
   8 #include "GLContext.h"
   9 #include "WebGLSync.h"
  10 #include "mozilla/StaticPrefs_webgl.h"
  11
  12 namespace mozilla {
  13
  14 // -------------------------------------------------------------------------
  15 // Sync objects
  16
  17 RefPtr<WebGLSync> WebGL2Context::FenceSync(GLenum condition, GLbitfield flags) {
  18   const FuncScope funcScope(*this, "fenceSync");
  19   if (IsContextLost()) return nullptr;
  20
  21   if (condition != LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE) {
  22     ErrorInvalidEnum("condition must be SYNC_GPU_COMMANDS_COMPLETE");
  23     return nullptr;
  24   }
  25
  26   if (flags != 0) {
  27     ErrorInvalidValue("flags must be 0");
  28     return nullptr;
  29   }
  30
  31   RefPtr<WebGLSync> globj = new WebGLSync(this, condition, flags);
  32   return globj;
  33 }
  34
  35 GLenum WebGL2Context::ClientWaitSync(const WebGLSync& sync, GLbitfield flags,
  36                                      GLuint64 timeout) {
  37   const FuncScope funcScope(*this, "clientWaitSync");
  38   if (IsContextLost()) return LOCAL_GL_WAIT_FAILED;
  39
  40   if (!ValidateObject("sync", sync)) return LOCAL_GL_WAIT_FAILED;
  41
  42   if (flags != 0 && flags != LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT) {
  43     ErrorInvalidValue("`flags` must be SYNC_FLUSH_COMMANDS_BIT or 0.");
  44     return LOCAL_GL_WAIT_FAILED;
  45   }
  46
  47   if (timeout > kMaxClientWaitSyncTimeoutNS) {
  48     ErrorInvalidOperation("`timeout` must not exceed %s nanoseconds.",
  49                           "MAX_CLIENT_WAIT_TIMEOUT_WEBGL");
  50     return LOCAL_GL_WAIT_FAILED;
  51   }
  52
  53   const auto ret = gl->fClientWaitSync(sync.mGLName, flags, timeout);
  54
  55   if (ret == LOCAL_GL_CONDITION_SATISFIED || ret == LOCAL_GL_ALREADY_SIGNALED) {
  56     sync.MarkSignaled();
  57   }
  58
  59   return ret;
  60 }
  61
  62 }  // namespace mozilla