diff --git a/neo/renderer/RenderBackend.cpp b/neo/renderer/RenderBackend.cpp
index abdb22b7..fb837d0c 100644
--- a/neo/renderer/RenderBackend.cpp
+++ b/neo/renderer/RenderBackend.cpp
@@ -5207,7 +5207,7 @@ void idRenderBackend::ExecuteBackEndCommands( const emptyCommand_t* cmds )
 				break;
 				
 			case RC_SET_BUFFER:
-				//RB_SetBuffer( cmds );
+				SetBuffer( cmds );
 				c_setBuffers++;
 				break;
 				
diff --git a/neo/renderer/RenderSystem.cpp b/neo/renderer/RenderSystem.cpp
index cddd9bd7..3b42d4f8 100644
--- a/neo/renderer/RenderSystem.cpp
+++ b/neo/renderer/RenderSystem.cpp
@@ -773,11 +773,17 @@ const emptyCommand_t* idRenderSystemLocal::SwapCommandBuffers_FinishCommandBuffe
 	// set the time for shader effects in 2D rendering
 	frameShaderTime = Sys_Milliseconds() * 0.001;
 	
-#if !defined(USE_VULKAN)
+#if 1 //!defined(USE_VULKAN)
 	// RB: TODO RC_SET_BUFFER is not handled in OpenGL
 	setBufferCommand_t* cmd2 = ( setBufferCommand_t* )R_GetCommandBuffer( sizeof( *cmd2 ) );
 	cmd2->commandId = RC_SET_BUFFER;
+	
+#if defined(USE_VULKAN)
+	cmd2->buffer = 0;
+#else
 	cmd2->buffer = ( int )GL_BACK;
+#endif
+	
 #endif
 	
 	// the old command buffer can now be rendered, while the new one can
diff --git a/neo/renderer/Vulkan/RenderBackend_VK.cpp b/neo/renderer/Vulkan/RenderBackend_VK.cpp
index 1075f869..28e682ab 100644
--- a/neo/renderer/Vulkan/RenderBackend_VK.cpp
+++ b/neo/renderer/Vulkan/RenderBackend_VK.cpp
@@ -2114,7 +2114,38 @@ void idRenderBackend::DrawFlickerBox()
 		return;
 	}
 	
-	// TODO
+	VkClearAttachment attachment = {};
+	
+	attachment.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+	attachment.colorAttachment = 0;
+	
+	VkClearColorValue& color = attachment.clearValue.color;
+	
+	if( vkcontext.currentFrameData & 1 )
+	{
+		color.float32[ 0 ] = 1;
+		color.float32[ 1 ] = 0;
+		color.float32[ 2 ] = 0;
+		color.float32[ 3 ] = 1;
+	}
+	else
+	{
+		color.float32[ 0 ] = 0;
+		color.float32[ 1 ] = 1;
+		color.float32[ 2 ] = 0;
+		color.float32[ 3 ] = 1;
+	}
+	
+	VkExtent2D extent;
+	extent.width = 256;
+	extent.height = 256;
+	
+	VkClearRect clearRect = {};
+	clearRect.baseArrayLayer = 0;
+	clearRect.layerCount = 1;
+	clearRect.rect.extent = extent;
+	
+	vkCmdClearAttachments( vkcontext.commandBuffer[ vkcontext.currentFrameData ], 1, &attachment, 1, &clearRect );
 	
 	/*
 	if( tr.frameCount & 1 )