diff --git a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
index 1bf433bff..569160397 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj	
@@ -1010,7 +1010,7 @@
 		4B228CD624D773CA0077EF25 /* CSScanTarget.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = CSScanTarget.h; sourceTree = "<group>"; };
 		4B228CD724DA12C50077EF25 /* CSScanTargetView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CSScanTargetView.h; sourceTree = "<group>"; };
 		4B228CD824DA12C60077EF25 /* CSScanTargetView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CSScanTargetView.m; sourceTree = "<group>"; };
-		4B228CDA24DA41880077EF25 /* ScanTarget.metal */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.metal; name = ScanTarget.metal; path = "Clock Signal/ScanTarget/ScanTarget.metal"; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.metal; };
+		4B228CDA24DA41880077EF25 /* ScanTarget.metal */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.metal; path = ScanTarget.metal; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.metal; };
 		4B24095A1C45DF85004DA684 /* Stepper.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = Stepper.hpp; sourceTree = "<group>"; };
 		4B2530F3244E6773007980BF /* fm.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = fm.json; sourceTree = "<group>"; };
 		4B2A332C1DB86821002876E3 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.xib; name = Base; path = "Clock Signal/Base.lproj/OricOptions.xib"; sourceTree = SOURCE_ROOT; };
@@ -2068,6 +2068,7 @@
 		4B228CD324D773B30077EF25 /* ScanTarget */ = {
 			isa = PBXGroup;
 			children = (
+				4B228CDA24DA41880077EF25 /* ScanTarget.metal */,
 				4B228CD424D773B30077EF25 /* CSScanTarget.mm */,
 				4B228CD624D773CA0077EF25 /* CSScanTarget.h */,
 			);
@@ -3325,7 +3326,6 @@
 		4BB73E951B587A5100552FC2 = {
 			isa = PBXGroup;
 			children = (
-				4B228CDA24DA41880077EF25 /* ScanTarget.metal */,
 				4BC3C67A24C9230F0027BF76 /* BufferingScanTarget.cpp */,
 				4BC3C67B24C9230F0027BF76 /* BufferingScanTarget.hpp */,
 				4BC76E6A1C98F43700E6EF73 /* Accelerate.framework */,
diff --git a/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm b/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm
index a291ffb79..98e094260 100644
--- a/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm	
+++ b/OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm	
@@ -29,14 +29,17 @@
 
 		// Generate some static buffers. AS A TEST.
 		constexpr float vertices[] = {
-			0.0f,	0.5f,	0.0f,	1.0f,	// Position.
-			1.0f, 	0.0f, 	0.0f, 	1.0f,	// Colour.
+			-0.9f,	-0.9f,			// Position.
+			1.0f, 	0.0f, 	0.0f,	// Colour.
 
-			-0.5f,	-0.5f,	0.0f,	1.0f,
-			0.0f, 	1.0f, 	0.0f, 	1.0f,
+			-0.9f,	0.9f,
+			0.0f, 	1.0f, 	0.0f,
 
-			0.5f,	-0.5f,	0.0f,	1.0f,
-			0.0f, 	0.0f, 	1.0f, 	1.0f,
+			0.9f,	-0.9f,
+			0.0f, 	0.0f, 	1.0f,
+
+			0.9f,	0.9f,
+			0.0f, 	1.0f, 	1.0f,
 		};
 		_verticesBuffer = [view.device newBufferWithBytes:vertices length:sizeof(vertices) options:MTLResourceOptionCPUCacheModeDefault];
 
@@ -45,15 +48,15 @@
 		// Position.
 		vertexDescriptor.attributes[0].bufferIndex = 0;
 		vertexDescriptor.attributes[0].offset = 0;
-		vertexDescriptor.attributes[0].format = MTLVertexFormatFloat4;
+		vertexDescriptor.attributes[0].format = MTLVertexFormatFloat2;
 
 		// Colour.
 		vertexDescriptor.attributes[1].bufferIndex = 0;
-		vertexDescriptor.attributes[1].offset = sizeof(float)*4;
-		vertexDescriptor.attributes[1].format = MTLVertexFormatFloat4;
+		vertexDescriptor.attributes[1].offset = sizeof(float)*2;
+		vertexDescriptor.attributes[1].format = MTLVertexFormatFloat3;
 
 		// Total vertex size.
-        vertexDescriptor.layouts[0].stride = sizeof(float) * 8;
+		vertexDescriptor.layouts[0].stride = sizeof(float)*5;
 
 		// Generate TEST pipeline.
 		id<MTLLibrary> library = [view.device newDefaultLibrary];
@@ -93,7 +96,7 @@
 	// Drawing. Just the test triangle, as described above.
 	[encoder setRenderPipelineState:_gouraudPipeline];
 	[encoder setVertexBuffer:_verticesBuffer offset:0 atIndex:0];
-	[encoder drawPrimitives:MTLPrimitiveTypeTriangle vertexStart:0 vertexCount:3 instanceCount:1];
+	[encoder drawPrimitives:MTLPrimitiveTypeTriangleStrip vertexStart:0 vertexCount:4 instanceCount:1];
 
 	// Complete encoding.
 	[encoder endEncoding];
diff --git a/OSBindings/Mac/Clock Signal/ScanTarget/ScanTarget.metal b/OSBindings/Mac/Clock Signal/ScanTarget/ScanTarget.metal
index 8384aec14..7e2a9822e 100644
--- a/OSBindings/Mac/Clock Signal/ScanTarget/ScanTarget.metal	
+++ b/OSBindings/Mac/Clock Signal/ScanTarget/ScanTarget.metal	
@@ -13,8 +13,8 @@ using namespace metal;
 // of my learning process, and the fact that they soon won't be.
 
 struct InputVertex {
-	float4 position	[[attribute(0)]];
-	float4 colour	[[attribute(1)]];
+	float2 position	[[attribute(0)]];
+	float3 colour	[[attribute(1)]];
 };
 
 struct ColouredVertex {
@@ -22,11 +22,10 @@ struct ColouredVertex {
 	float4 colour;
 };
 
-vertex ColouredVertex vertex_main(	device const InputVertex *vertices [[buffer(0)]],
-									uint vid [[vertex_id]]) {
+vertex ColouredVertex vertex_main(InputVertex vert [[stage_in]]) {
 	ColouredVertex output;
-	output.position = vertices[vid].position;
-	output.colour = vertices[vid].colour;
+	output.position = float4(vert.position, 0.0, 1.0);
+	output.colour = float4(vert.colour, 1.0);
 	return output;
 }