WebKit support for EXT_occlusion_query.

webkit/gpu/webgraphicscontext3d_in_process_impl.cc

Index: webkit/gpu/webgraphicscontext3d_in_process_impl.cc
diff --git a/webkit/gpu/webgraphicscontext3d_in_process_impl.cc b/webkit/gpu/webgraphicscontext3d_in_process_impl.cc
index 5b39a841c8480ea4124f8a79dc27718faf2855fd..a489a9853311b72e8c4e572dd9024af16a8dc3cc 100644
--- a/webkit/gpu/webgraphicscontext3d_in_process_impl.cc
+++ b/webkit/gpu/webgraphicscontext3d_in_process_impl.cc
@@ -1635,6 +1635,27 @@ void WebGraphicsContext3DInProcessImpl::texImageIOSurface2DCHROMIUM(
 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();