Initialize memory for vulkan swapchain images.

gpu/vulkan/vulkan_swap_chain.cc

Index: gpu/vulkan/vulkan_swap_chain.cc
diff --git a/gpu/vulkan/vulkan_swap_chain.cc b/gpu/vulkan/vulkan_swap_chain.cc
index a42e26ed9d8234db8ad8f180093604f93f24127d..030595602a59439232578c3455e267b3012866a8 100644
--- a/gpu/vulkan/vulkan_swap_chain.cc
+++ b/gpu/vulkan/vulkan_swap_chain.cc
@@ -203,13 +203,27 @@ bool VulkanSwapChain::InitializeSwapImages(
     // Initialize the command buffer for this buffer data.
     image_data->command_buffer = command_pool_->CreatePrimaryCommandBuffer();
 
-    // Setup the Image Layout as the first command that gets issued in each
-    // command buffer.
-    ScopedSingleUseCommandBufferRecorder recorder(*image_data->command_buffer);
-    image_memory_barrier.image = images[i];
-    vkCmdPipelineBarrier(recorder.handle(), VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
-                         VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, nullptr, 0,
-                         nullptr, 1, &image_memory_barrier);
+    {
+      // Setup the Image Layout as the first command that gets issued in each
+      // command buffer.
+      ScopedSingleUseCommandBufferRecorder recorder(
+          *image_data->command_buffer);
+      image_memory_barrier.image = images[i];
+      vkCmdPipelineBarrier(recorder.handle(), VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+                           VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0, 0, nullptr, 0,
+                           nullptr, 1, &image_memory_barrier);
+
+      VkClearColorValue clear_color = { { 0.0f, 0.0f, 0.0f, 0.0f } };
+      vkCmdClearColorImage(recorder.handle(), images[i],
+                           VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
+                           &clear_color, 1, &image_subresource_range);
+    }
+
+    // First submit to fill the image memory.
+    if (!image_data->command_buffer->Submit(0, VK_NULL_HANDLE,
+                                            1, &image_data->render_semaphore)) {
+      return false;
+    }
 
     // Create the image view.
     image_data->image_view.reset(new VulkanImageView(device_queue_));