diff --git a/assets/shaders/pbr.frag.spv b/assets/shaders/pbr.frag.spv
index cb35262..23992e9 100644
Binary files a/assets/shaders/pbr.frag.spv and b/assets/shaders/pbr.frag.spv differ
diff --git a/src/gears/game.d b/src/gears/game.d
index 5c93eb5..2bed3a9 100644
--- a/src/gears/game.d
+++ b/src/gears/game.d
@@ -294,13 +294,11 @@ Cycle(Game* g)
 		model = model.next;
 	}
 
-	/*
 	ImageBarrier(&g.rd);
 
 	Bind(&g.rd, &g.oit_pipeline);
 
 	Draw(&g.rd, 3, 1);
-	*/
 
 	FinishRendering(&g.rd);
 
@@ -337,17 +335,12 @@ Destroy(Game* g)
 	Destroy(&g.rd, &g.ui_pipeline);
 	Destroy(&g.rd, &g.compute_pipeline);
 
-	Node!(Model)* model = g.models.first;
-	for(;;)
-	{
-		if (model == null)
-		{
-			break;
-		}
+	Destroy(&g.rd, &g.rock);
+	Destroy(&g.rd, &g.tree);
+	Destroy(&g.rd, &g.magic_rock);
+	Destroy(&g.rd, &g.log);
+	Destroy(&g.rd, &g.stump);
 
-		Destroy(&g.rd, &model.value);
-		model = model.next;
-	}
 	Destroy(&g.rd);
 }
 
diff --git a/src/gears/platform.d b/src/gears/platform.d
index 1acc0cb..b48a6d4 100644
--- a/src/gears/platform.d
+++ b/src/gears/platform.d
@@ -225,39 +225,45 @@ CreateWindow(string name, u16 width, u16 height)
 void
 LockCursor(PlatformWindow* window)
 {
-	u32 counter = 0;
-	for(;;)
+	if (!window.locked_cursor)
 	{
-		xcb_generic_error_t *error;
-		xcb_grab_pointer_cookie_t grab_cookie = xcb_grab_pointer(window.conn, true, window.window, 0, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, window.window, XCB_NONE, XCB_CURRENT_TIME);
-		xcb_grab_pointer_reply_t* grab_reply = xcb_grab_pointer_reply(window.conn, grab_cookie, &error);
-	
-		scope(exit)
+		u32 counter = 0;
+		for(;;)
 		{
-			pureFree(error);
-			pureFree(grab_reply);
+			xcb_generic_error_t *error;
+			xcb_grab_pointer_cookie_t grab_cookie = xcb_grab_pointer(window.conn, true, window.window, 0, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, window.window, XCB_NONE, XCB_CURRENT_TIME);
+			xcb_grab_pointer_reply_t* grab_reply = xcb_grab_pointer_reply(window.conn, grab_cookie, &error);
+
+			scope(exit)
+			{
+				pureFree(error);
+				pureFree(grab_reply);
+			}
+
+			if (grab_reply.status == XCB_GRAB_STATUS_SUCCESS)
+			{
+				break;
+			}
+
+			assert(counter < 5, "Unable to grab cursor");
+			counter += 1;
+			Thread.sleep(dur!("msecs")(50));
 		}
 
-		if (grab_reply.status == XCB_GRAB_STATUS_SUCCESS)
-		{
-			break;
-		}
-
-		assert(counter < 5, "Unable to grab cursor");
-		counter += 1;
-		Thread.sleep(dur!("msecs")(50));
+		HideCursor(window);
+		window.locked_cursor = true;
 	}
-
-	HideCursor(window);
-	window.locked_cursor = true;
 }
 
 void
 UnlockCursor(PlatformWindow* window)
 {
-	xcb_ungrab_pointer(window.conn, XCB_CURRENT_TIME);
-	ShowCursor(window);
-	window.locked_cursor = false;
+	if (window.locked_cursor)
+	{
+		xcb_ungrab_pointer(window.conn, XCB_CURRENT_TIME);
+		ShowCursor(window);
+		window.locked_cursor = false;
+	}
 }
 
 // TODO: improve error handling for show/hide cursor
diff --git a/src/gears/vulkan.d b/src/gears/vulkan.d
index 1e86bc7..a9f7275 100644
--- a/src/gears/vulkan.d
+++ b/src/gears/vulkan.d
@@ -677,11 +677,18 @@ BeginRendering(Vulkan* vk)
 	VkImage image = CurrentImage(vk);
 	Transition(vk.cmds[vk.frame_index], image, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
 
-	VkClearValue clear_color = {
-		color: {
-			float32: [0.0, 0.0, 0.0, 1.0],
+	VkClearValue[] clear_color = [
+		{
+			color: {
+				float32: [0.0, 0.0, 0.0, 1.0],
+			},
 		},
-	};
+		{
+			color: {
+				float32: [0.0, 0.0, 0.0, 0.0],			 
+			},
+		},
+	];
 
 	VkRenderPassBeginInfo pass_info = {
 		sType: VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
@@ -697,8 +704,8 @@ BeginRendering(Vulkan* vk)
 				height: vk.swapchain_extent.height,
 			},
 		},
-		clearValueCount: 1,
-		pClearValues: &clear_color,
+		clearValueCount: cast(u32)clear_color.length,
+		pClearValues: clear_color.ptr,
 	};
 
 	vkCmdBeginRenderPass(vk.cmds[vk.frame_index], &pass_info, VK_SUBPASS_CONTENTS_INLINE);
@@ -1173,10 +1180,10 @@ ImageBarrier(Vulkan* vk)
 {
 	VkMemoryBarrier2 barrier = {
 		sType: VK_STRUCTURE_TYPE_MEMORY_BARRIER_2,
-		srcStageMask: VK_PIPELINE_STAGE_2_TRANSFER_BIT,
-		srcAccessMask: VK_ACCESS_2_TRANSFER_WRITE_BIT,
-		dstStageMask: VK_PIPELINE_STAGE_2_FRAGMENT_SHADER_BIT,
-		dstAccessMask: VK_ACCESS_2_SHADER_READ_BIT | VK_ACCESS_2_SHADER_WRITE_BIT,
+		srcStageMask: VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
+		srcAccessMask: VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT,
+		dstStageMask: VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
+		dstAccessMask: VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT,
 	};
 
 	VkDependencyInfo dependency = {
@@ -1492,8 +1499,10 @@ InitFramebufferAndRenderPass(Vulkan* vk)
 			finalLayout: VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
 		},
 		{
-			samples: VK_SAMPLE_COUNT_1_BIT,
 			format: vk.depth_image.format,
+			samples: VK_SAMPLE_COUNT_1_BIT,
+			loadOp: VK_ATTACHMENT_LOAD_OP_CLEAR,
+			storeOp: VK_ATTACHMENT_STORE_OP_STORE,
 			initialLayout: VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
 			finalLayout: VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
 		},
diff --git a/src/shaders/pbr.frag.glsl b/src/shaders/pbr.frag.glsl
index 1b2ba70..2964c89 100644
--- a/src/shaders/pbr.frag.glsl
+++ b/src/shaders/pbr.frag.glsl
@@ -61,7 +61,7 @@ void main()
 	FragColor = out_col;
 
 	/*
-	TODO: set up OIT again
+	//TODO: set up OIT again
 	vec4 srgb_col = out_col;// UnPreMultLinearToSRGB(out_col);
 
 	uvec4 store_value = uvec4(packUnorm4x8(srgb_col), floatBitsToUint(gl_FragCoord.z), store_mask, 0);