Teach GPU command buffer whether a context is webgl.

gpu/command_buffer/service/context_group.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 "gpu/command_buffer/service/context_group.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 namespace gles2 {
 
 ContextGroup::ContextGroup(
     const scoped_refptr<MailboxManager>& mailbox_manager,
     const scoped_refptr<MemoryTracker>& memory_tracker,
     const scoped_refptr<ShaderTranslatorCache>& shader_translator_cache,
     const scoped_refptr<FeatureInfo>& feature_info,
     const scoped_refptr<SubscriptionRefSet>& subscription_ref_set,
     const scoped_refptr<ValueStateMap>& pending_valuebuffer_state,
     bool bind_generates_resource)
-    : mailbox_manager_(mailbox_manager),
+    : context_type_(kContextTypeUndefined),
+      mailbox_manager_(mailbox_manager),
       memory_tracker_(memory_tracker),
       shader_translator_cache_(shader_translator_cache),
       subscription_ref_set_(subscription_ref_set),
       pending_valuebuffer_state_(pending_valuebuffer_state),
       enforce_gl_minimums_(base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnforceGLMinimums)),
       bind_generates_resource_(bind_generates_resource),
       max_vertex_attribs_(0u),
       max_texture_units_(0u),
       max_texture_image_units_(0u),
@@ skipping 20 matching lines @@
     manager->Initialize();
   }
 }
 
 static void GetIntegerv(GLenum pname, uint32* var) {
   GLint value = 0;
   glGetIntegerv(pname, &value);
   *var = value;
 }
 
+// static
+ContextGroup::ContextType ContextGroup::GetContextType(
+    unsigned webgl_version) {
+  switch (webgl_version) {
+    case 0:
+      return kContextTypeOther;
+    case 1:
+      return kContextTypeWebGL1;
+    case 2:
+      return kContextTypeWebGL2;
+    default:
+      return kContextTypeUndefined;
+  }
+}
+
 bool ContextGroup::Initialize(
     GLES2Decoder* decoder,
+    ContextGroup::ContextType context_type,
     const DisallowedFeatures& disallowed_features) {
+  if (context_type == kContextTypeUndefined) {
+    LOG(ERROR) << "ContextGroup::Initialize failed because of unknown "
+               << "context type.";
+    return false;
+  }
+  if (context_type_ == kContextTypeUndefined) {
+    context_type_ = context_type;
+  } else if (context_type_ != context_type) {
+    LOG(ERROR) << "ContextGroup::Initialize failed because the type of "
+               << "the context does not fit with the group.";
+    return false;
+  }
+
   // If we've already initialized the group just add the context.
   if (HaveContexts()) {
     decoders_.push_back(base::AsWeakPtr<GLES2Decoder>(decoder));
     return true;
   }
 
   if (!feature_info_->Initialize(disallowed_features)) {
     LOG(ERROR) << "ContextGroup::Initialize failed because FeatureInfo "
                << "initialization failed.";
     return false;
@@ skipping 323 matching lines @@
     GLuint client_id, GLuint* service_id) const {
   Buffer* buffer = buffer_manager_->GetBuffer(client_id);
   if (!buffer)
     return false;
   *service_id = buffer->service_id();
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu