dom/canvas/WebGL2ContextSync.cpp
author Sylvestre Ledru <sledru@mozilla.com>
Fri, 24 Feb 2017 17:04:50 +0100
changeset 489671 05d9746016f47666c00390aacc9f9d62c8ffffb4
parent 489668 cbb8fdf1daf98a15f7d57f6b08d273bdf96aa1a0
permissions -rw-r--r--
Move to 99 chars instead of 80 MozReview-Commit-ID: 6NxbMuFVI7e

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

#include "WebGL2Context.h"

#include "GLContext.h"
#include "WebGLSync.h"

namespace mozilla {

// -------------------------------------------------------------------------
// Sync objects

already_AddRefed<WebGLSync>
WebGL2Context::FenceSync(GLenum condition, GLbitfield flags)
{
  if (IsContextLost())
    return nullptr;

  if (condition != LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE) {
    ErrorInvalidEnum("fenceSync: condition must be SYNC_GPU_COMMANDS_COMPLETE");
    return nullptr;
  }

  if (flags != 0) {
    ErrorInvalidValue("fenceSync: flags must be 0");
    return nullptr;
  }

  MakeContextCurrent();
  RefPtr<WebGLSync> globj = new WebGLSync(this, condition, flags);
  return globj.forget();
}

bool
WebGL2Context::IsSync(const WebGLSync* sync)
{
  if (!ValidateIsObject("isSync", sync))
    return false;

  return true;
}

void
WebGL2Context::DeleteSync(WebGLSync* sync)
{
  if (!ValidateDeleteObject("deleteSync", sync))
    return;

  sync->RequestDelete();
}

GLenum
WebGL2Context::ClientWaitSync(const WebGLSync& sync, GLbitfield flags, GLuint64 timeout)
{
  const char funcName[] = "clientWaitSync";
  if (IsContextLost())
    return LOCAL_GL_WAIT_FAILED;

  if (!ValidateObject(funcName, sync))
    return LOCAL_GL_WAIT_FAILED;

  if (flags != 0 && flags != LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT) {
    ErrorInvalidValue("%s: `flags` must be SYNC_FLUSH_COMMANDS_BIT or 0.", funcName);
    return LOCAL_GL_WAIT_FAILED;
  }

  if (timeout > kMaxClientWaitSyncTimeoutNS) {
    ErrorInvalidOperation(
      "%s: `timeout` must not exceed %s nanoseconds.", funcName, "MAX_CLIENT_WAIT_TIMEOUT_WEBGL");
    return LOCAL_GL_WAIT_FAILED;
  }

  MakeContextCurrent();
  return gl->fClientWaitSync(sync.mGLName, flags, timeout);
}

void
WebGL2Context::WaitSync(const WebGLSync& sync, GLbitfield flags, GLint64 timeout)
{
  const char funcName[] = "waitSync";
  if (IsContextLost())
    return;

  if (!ValidateObject(funcName, sync))
    return;

  if (flags != 0) {
    ErrorInvalidValue("%s: `flags` must be 0.", funcName);
    return;
  }

  if (timeout != -1) {
    ErrorInvalidValue("%s: `timeout` must be TIMEOUT_IGNORED.", funcName);
    return;
  }

  MakeContextCurrent();
  gl->fWaitSync(sync.mGLName, flags, LOCAL_GL_TIMEOUT_IGNORED);
}

void
WebGL2Context::GetSyncParameter(JSContext*,
                                const WebGLSync& sync,
                                GLenum pname,
                                JS::MutableHandleValue retval)
{
  const char funcName[] = "getSyncParameter";
  retval.setNull();
  if (IsContextLost())
    return;

  if (!ValidateObject(funcName, sync))
    return;

  ////

  gl->MakeCurrent();

  GLint result = 0;
  switch (pname) {
    case LOCAL_GL_OBJECT_TYPE:
    case LOCAL_GL_SYNC_STATUS:
    case LOCAL_GL_SYNC_CONDITION:
    case LOCAL_GL_SYNC_FLAGS:
      gl->fGetSynciv(sync.mGLName, pname, 1, nullptr, &result);
      retval.set(JS::Int32Value(result));
      return;

    default:
      ErrorInvalidEnum("%s: Invalid pname 0x%04x", funcName, pname);
      return;
  }
}

} // namespace mozilla