WebKit support for EXT_occlusion_query.

webkit/gpu/webgraphicscontext3d_in_process_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 1617 matching lines @@
 }
 
 void WebGraphicsContext3DInProcessImpl::texImageIOSurface2DCHROMIUM(
     WGC3Denum target, WGC3Dint width, WGC3Dint height,
     WGC3Duint ioSurfaceId, WGC3Duint plane) {
 }
 
 DELEGATE_TO_GL_5(texStorage2DEXT, TexStorage2DEXT,
                  WGC3Denum, WGC3Dint, WGC3Duint, WGC3Dint, WGC3Dint)
 
+WebGLId WebGraphicsContext3DInProcessImpl::createQueryEXT()
+{
+  makeContextCurrent();
+  GLuint o;
+  glGenQueriesARB(1, &o);

[apatrick_chromium, 2012/03/13 18:21:27]

If glGenQueriesARB fails, o will be uninitialized.

+  return o;
+}
+
+void WebGraphicsContext3DInProcessImpl::deleteQueryEXT(WebGLId query)
+{
+  makeContextCurrent();
+  glDeleteQueriesARB(1, &query);
+}
+
+DELEGATE_TO_GL_1R(isQueryEXT, IsQueryARB, WebGLId, WGC3Dboolean)
+DELEGATE_TO_GL_2(beginQueryEXT, BeginQueryARB, WGC3Denum, WebGLId)
+DELEGATE_TO_GL_1(endQueryEXT, EndQueryARB, WGC3Denum)
+DELEGATE_TO_GL_3(getQueryivEXT, GetQueryivARB, WGC3Denum, WGC3Denum, WGC3Dint*)
+DELEGATE_TO_GL_3(getQueryObjectuivEXT, GetQueryObjectuivARB,
+                 WebGLId, WGC3Denum, WGC3Duint*)
+
 #if WEBKIT_USING_SKIA
 GrGLInterface* WebGraphicsContext3DInProcessImpl::onCreateGrGLInterface() {
   return gfx::CreateInProcessSkiaGLBinding();
 }
 #endif
 
 bool WebGraphicsContext3DInProcessImpl::AngleCreateCompilers() {
   if (!ShInitialize())
     return false;
 
@@ skipping 66 matching lines @@
   if (length > 1) {
     entry->translated_source.reset(new char[length]);
     ShGetObjectCode(compiler, entry->translated_source.get());
   }
   entry->is_valid = true;
   return true;
 }
 
 }  // namespace gpu
 }  // namespace webkit