gpu: Fix Vivante's "hisilicon" GPUs

This fixes "Hisilicon" GPUs, which is an instance of a
Vivante's GPU design. This involves enabling virtual
contexts, since they don't support share-groups, and further
adds a work-around for switching surfaces. Without the work-
around the view surface "inherits" the size of the last
bound surface (which for Chrome tends to be a 1x1 pbuffer)
resulting in a black screen. The following steps "repair"
the view surface every time it is made current:

    - Make it current.
    - Bind the default frame-buffer.
    - Make it not current.
    - Destroy/recreate it from the native handle.
    - Make it current again.

NOTE: The "Recreate" function is added to surface because
the Destroy/Initialize may be intercepted or modified by
wrapper surface classes. Recreate is similar to resize,
which after being forwarded by a wrapper can call
Destroy/Initialize on the 'real' surface.

BUG=179250, 229643
NOTRY=true

No try, since it's Android only and already tested.

Review URL: https://chromiumcodereview.appspot.com/13140006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194737 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 7 insertions, 0 deletions

diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index d9df6f6..aad133e 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;
   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;
diff --git a/gpu/command_buffer/service/gpu_driver_bug_workaround_type.h b/gpu/command_buffer/service/gpu_driver_bug_workaround_type.h
index 0478b28..fa71504 100644
--- a/gpu/command_buffer/service/gpu_driver_bug_workaround_type.h
+++ b/gpu/command_buffer/service/gpu_driver_bug_workaround_type.h
@@ -28,6 +28,8 @@
          exit_on_context_lost)                        \
   GPU_OP(FLUSH_ON_CONTEXT_SWITCH,                     \
          flush_on_context_switch)                     \
+  GPU_OP(MAKECURRENT_RECREATES_SURFACES,              \
+         makecurrent_recreates_surfaces)              \
   GPU_OP(MAX_CUBE_MAP_TEXTURE_SIZE_LIMIT_1024,        \
          max_cube_map_texture_size_limit_1024)        \
   GPU_OP(MAX_CUBE_MAP_TEXTURE_SIZE_LIMIT_4096,        \