Reland "gpu: Fix Vivante's "hisilicon" GPUs"

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index d9df6f6345a149592bc90ba19ddfddb5fe398147..aad133eb87d88c1137570a62eec486de40c9540d 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -191,6 +191,7 @@ void FeatureInfo::AddFeatures(const CommandLine& command_line) {
   bool is_qualcomm = false;
   bool is_imagination = false;
   bool is_arm = false;
+  bool is_hisilicon = false;

[epenner, 2013/04/19 04:13:14]

The three lines in this file is the only new code that will execute on other
platforms. The rest of the changes is new code which is never called (the
call-sites are #ifdef'd)

   const char* gl_strings[2];
   gl_strings[0] = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
   gl_strings[1] = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
@@ -208,6 +209,7 @@ void FeatureInfo::AddFeatures(const CommandLine& command_line) {
         is_qualcomm |= string_set.Contains("qualcomm");
         is_imagination |= string_set.Contains("imagination");
         is_arm |= string_set.Contains("arm");
+        is_hisilicon |= string_set.Contains("hisilicon");
       }
     }
 
@@ -221,6 +223,9 @@ void FeatureInfo::AddFeatures(const CommandLine& command_line) {
       workarounds_.flush_on_context_switch = true;
       workarounds_.delete_instead_of_resize_fbo = true;
     }
+    if (is_hisilicon) {
+      workarounds_.makecurrent_recreates_surfaces = true;
+    }
 #if defined(OS_MACOSX)
     workarounds_.needs_offscreen_buffer_workaround = is_nvidia;
     workarounds_.needs_glsl_built_in_function_emulation = is_amd;