Resize synchronization for Linux.

chrome/gpu/gpu_command_buffer_stub.cc

Index: chrome/gpu/gpu_command_buffer_stub.cc
diff --git a/chrome/gpu/gpu_command_buffer_stub.cc b/chrome/gpu/gpu_command_buffer_stub.cc
index 2834c00438494339e9dfa3cb208c874ace606c56..707e866dd6f0df26107d6536edaf1c4f2d066b51 100644
--- a/chrome/gpu/gpu_command_buffer_stub.cc
+++ b/chrome/gpu/gpu_command_buffer_stub.cc
@@ -113,6 +113,14 @@ void GpuCommandBufferStub::OnInitialize(
               NewCallback(this,
                           &GpuCommandBufferStub::SwapBuffersCallback));
         }

[nduca, 2010/11/23 16:59:49]

How does the Macosx SetSwapBuffersCallback get implemented? It seems that's done
without touching the main Gl context?

[Ken Russell (switch to Gerrit), 2010/11/23 19:17:55]

It's wired up through the GLES2Decoder. It does seem that that would be an
alternative; the callback could be called from DoResizeCHROMIUM before calling
GLContext::SetSize(), and would avoid changes to the GLContext.

[jonathan.backer, 2010/11/23 21:00:19]

Done.

+#elif defined(OS_LINUX)
+        if (handle_) {
+          // Set up a pathway to allow the Gpu process to ask the browser
+          // for a window resize.
+          processor_->SetResizeCallback(
+              NewCallback(this,
+                          &GpuCommandBufferStub::ResizeCallback));
+        }
 #endif
       } else {
         processor_.reset();
@@ -203,4 +211,13 @@ void GpuCommandBufferStub::SwapBuffersCallback() {
 }
 #endif  // defined(OS_MACOSX)
 
+#if defined(OS_LINUX)
+void GpuCommandBufferStub::ResizeCallback(gfx::Size size) {
+  ChildThread* gpu_thread = ChildThread::current();
+  bool result = false;
+  gpu_thread->Send(
+      new GpuHostMsg_ResizeXID(handle_, size.width(), size.height(), &result));
+}
+#endif  // defined(OS_LINUX)
+
 #endif  // ENABLE_GPU