android: Add basic support for Broadcom GPUs

This patch implements two GPU workarounds to make Chrome work on
devices with a Broadcom GPU:

1. Enable context virtualization on to avoid a EGL_BAD_CONTEXT failure
   from eglCreateContext().

2. Disable asynchronous texture uploads to avoid an "Invalid image or
   UNSUPPORTED OPERATION" failure from glEGLImageTargetTexture2DOES.

These modifications were tested on a Samsung Galaxy Fame S6810P.

BUG=179815

Review URL: https://chromiumcodereview.appspot.com/12461002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202062 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 1 deletions

diff --git a/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc b/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
index 2d834c9..fa29cf6 100644
--- a/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
+++ b/gpu/command_buffer/service/async_pixel_transfer_delegate_android.cc
@@ -12,6 +12,16 @@
 #include "ui/gl/gl_implementation.h"
 
 namespace gpu {
+namespace {
+
+bool IsBroadcom() {
+  const char* vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
+  if (vendor)
+    return std::string(vendor).find("Broadcom") != std::string::npos;
+  return false;
+}
+
+}
 
 // We only used threaded uploads when we can:
 // - Create EGLImages out of OpenGL textures (EGL_KHR_gl_texture_2D_image)
@@ -27,7 +37,8 @@ AsyncPixelTransferDelegate* AsyncPixelTransferDelegate::Create(
           context->HasExtension("EGL_KHR_image") &&
           context->HasExtension("EGL_KHR_image_base") &&
           context->HasExtension("EGL_KHR_gl_texture_2D_image") &&
-          context->HasExtension("GL_OES_EGL_image")) {
+          context->HasExtension("GL_OES_EGL_image") &&
+          !IsBroadcom()) {
         return new AsyncPixelTransferDelegateEGL;
       }
       LOG(INFO) << "Async pixel transfers not supported";