dom/canvas/WebGLExtensionDisjointTimerQuery.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "WebGLExtensions.h"
   8
   9 #include "GLContext.h"
  10 #include "mozilla/dom/WebGLRenderingContextBinding.h"
  11 #include "mozilla/dom/BindingUtils.h"
  12 #include "mozilla/StaticPrefs_webgl.h"
  13 #include "WebGLContext.h"
  14 #include "WebGLQuery.h"
  15
  16 namespace mozilla {
  17
  18 WebGLExtensionDisjointTimerQuery::WebGLExtensionDisjointTimerQuery(
  19     WebGLContext* webgl)
  20     : WebGLExtensionBase(webgl) {
  21   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
  22 }
  23
  24 bool WebGLExtensionDisjointTimerQuery::IsSupported(
  25     const WebGLContext* const webgl) {
  26   if (!StaticPrefs::webgl_enable_privileged_extensions()) return false;
  27
  28   gl::GLContext* gl = webgl->GL();
  29   return gl->IsSupported(gl::GLFeature::query_objects) &&
  30          gl->IsSupported(gl::GLFeature::get_query_object_i64v) &&
  31          gl->IsSupported(
  32              gl::GLFeature::query_counter);  // provides GL_TIMESTAMP
  33 }
  34
  35 }  // namespace mozilla