From fa4c7cdd83627695d1a4184d6c45c00e922854e8 Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Sun, 13 Oct 2013 11:06:29 -0700
Subject: [PATCH] Wait until the ringbuffer thread is spun up. This could be
 made much nicer.

---
 src/xenia/gpu/graphics_system.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/xenia/gpu/graphics_system.cc b/src/xenia/gpu/graphics_system.cc
index d3813657b..e4e3932ff 100644
--- a/src/xenia/gpu/graphics_system.cc
+++ b/src/xenia/gpu/graphics_system.cc
@@ -115,6 +115,10 @@ void GraphicsSystem::SetInterruptCallback(uint32_t callback,
 }
 
 void GraphicsSystem::InitializeRingBuffer(uint32_t ptr, uint32_t page_count) {
+  // TODO(benvanik): an event?
+  while (!driver_) {
+    Sleep(0);
+  }
   XEASSERTNOTNULL(driver_);
   worker_->Initialize(driver_, ptr, page_count);
 }