a bit more example usage

lib/MoonWorks

@@ -1 +1 @@
-Subproject commit c4d2e3b8eef88d2f90a12f3fa7a33e50a8fb0b8c
+Subproject commit 40d9cdd33a3d5bb0a9d2947c77c4d6c5b864b78b

src/MoonWorksImguiExampleGame.cs

@@ -28,27 +28,17 @@ namespace MoonWorksImGuiExample
 		private ShaderModule ImGuiFragmentShader;
 		private Sampler ImGuiSampler;
 
+		private Texture WoodGrainTexture;
+		private System.IntPtr WoodGrainTexturePtr;
+
+		private System.Numerics.Vector3 ExampleColor;
+
 		public MoonWorksImGuiExampleGame(
 			WindowCreateInfo windowCreateInfo,
 			PresentMode presentMode,
 			bool debugMode
 		) : base(windowCreateInfo, presentMode, 60, debugMode)
 		{
-			var context = ImGui.CreateContext();
-			ImGui.SetCurrentContext(context);
-
-			var io = ImGui.GetIO();
-
-			io.Fonts.AddFontDefault();
-
-			RebuildFontAtlas();
-
-			io.DisplaySize = new System.Numerics.Vector2(
-				windowCreateInfo.WindowWidth,
-				windowCreateInfo.WindowHeight
-			);
-			io.DisplayFramebufferScale = System.Numerics.Vector2.One;
-
 			ImGuiVertexShader = new ShaderModule(GraphicsDevice, Path.Combine(ContentPath, "ImGuiVert.spv"));
 			ImGuiFragmentShader = new ShaderModule(GraphicsDevice, Path.Combine(ContentPath, "ImGuiFrag.spv"));
 			ImGuiSampler = new Sampler(GraphicsDevice, SamplerCreateInfo.PointClamp);
@@ -78,6 +68,27 @@ namespace MoonWorksImGuiExample
 					MultisampleState = MultisampleState.None
 				}
 			);
+
+			var commandBuffer = GraphicsDevice.AcquireCommandBuffer();
+			WoodGrainTexture = Texture.LoadPNG(GraphicsDevice, commandBuffer, Path.Combine(ContentPath, "woodgrain.png"));
+			GraphicsDevice.Submit(commandBuffer);
+
+			var context = ImGui.CreateContext();
+			ImGui.SetCurrentContext(context);
+
+			var io = ImGui.GetIO();
+
+			io.Fonts.AddFontDefault();
+
+			RebuildFontAtlas();
+
+			WoodGrainTexturePtr = BindTexture(WoodGrainTexture);
+
+			io.DisplaySize = new System.Numerics.Vector2(
+				windowCreateInfo.WindowWidth,
+				windowCreateInfo.WindowHeight
+			);
+			io.DisplayFramebufferScale = System.Numerics.Vector2.One;
 		}
 
 		protected override void Update(System.TimeSpan dt)
@@ -90,6 +101,7 @@ namespace MoonWorksImGuiExample
 			var id = new System.IntPtr(TextureID);
 			LoadedTextures.Add(id, texture);
 			TextureHandles.Add(texture, id);
+			TextureID += 1;
 			return id;
 		}
 
@@ -175,18 +187,18 @@ namespace MoonWorksImGuiExample
 			{
 				var cmdList = drawDataPtr.CmdListsRange[n];
 
-				commandBuffer.SetBufferData(
+				commandBuffer.SetBufferData<VertexPositionTextureColor>(
 					ImGuiVertexBuffer,
 					cmdList.VtxBuffer.Data,
 					vertexOffset,
-					(uint) (cmdList.VtxBuffer.Size * vertexSize)
+					(uint) cmdList.VtxBuffer.Size
 				);
 
-				commandBuffer.SetBufferData(
+				commandBuffer.SetBufferData<ushort>(
 					ImGuiIndexBuffer,
 					cmdList.IdxBuffer.Data,
 					indexOffset,
-					(uint) cmdList.IdxBuffer.Size * sizeof(ushort)
+					(uint) cmdList.IdxBuffer.Size
 				);
 
 				vertexOffset += (uint) cmdList.VtxBuffer.Size;
@@ -196,6 +208,63 @@ namespace MoonWorksImGuiExample
 			GraphicsDevice.Submit(commandBuffer);
 		}
 
+		private void RenderCommandLists(ImDrawDataPtr drawDataPtr, ImGuiIOPtr ioPtr)
+		{
+			if (ImGuiVertexBuffer == null) { return; }
+
+			var commandBuffer = GraphicsDevice.AcquireCommandBuffer();
+			var swapchainTexture = commandBuffer.AcquireSwapchainTexture(Window);
+
+			if (swapchainTexture != null)
+			{
+				commandBuffer.BeginRenderPass(
+					new ColorAttachmentInfo(swapchainTexture, Color.Transparent)
+				);
+
+				commandBuffer.BindGraphicsPipeline(ImGuiPipeline);
+
+				var vertexUniformOffset = commandBuffer.PushVertexShaderUniforms(
+					Matrix4x4.CreateOrthographicOffCenter(0, ioPtr.DisplaySize.X, ioPtr.DisplaySize.Y, 0, -1, 1)
+				);
+
+				commandBuffer.BindVertexBuffers(ImGuiVertexBuffer);
+				commandBuffer.BindIndexBuffer(ImGuiIndexBuffer, IndexElementSize.Sixteen);
+
+				uint vertexOffset = 0;
+				uint indexOffset = 0;
+
+				for (int n = 0; n < drawDataPtr.CmdListsCount; n += 1)
+				{
+					var cmdList = drawDataPtr.CmdListsRange[n];
+
+					for (int cmdIndex = 0; cmdIndex < cmdList.CmdBuffer.Size; cmdIndex += 1)
+					{
+						var drawCmd = cmdList.CmdBuffer[cmdIndex];
+
+						commandBuffer.BindFragmentSamplers(
+							new TextureSamplerBinding(LoadedTextures[drawCmd.TextureId], ImGuiSampler)
+						);
+
+						commandBuffer.DrawIndexedPrimitives(
+							vertexOffset,
+							indexOffset,
+							drawCmd.ElemCount / 3,
+							vertexUniformOffset,
+							0
+						);
+
+						indexOffset += drawCmd.ElemCount;
+					}
+
+					vertexOffset += (uint) cmdList.VtxBuffer.Size;
+				}
+
+				commandBuffer.EndRenderPass();
+			}
+
+			GraphicsDevice.Submit(commandBuffer);
+		}
+
 		protected override void Draw(System.TimeSpan dt, double alpha)
 		{
 			// Replace this with your own drawing code.
@@ -242,64 +311,19 @@ namespace MoonWorksImGuiExample
 
 			ImGui.End();
 
+			ImGui.Begin("Texture", ImGuiWindowFlags.AlwaysAutoResize);
+			ImGui.Image(WoodGrainTexturePtr, new System.Numerics.Vector2(400, 400));
+			ImGui.End();
+
+			ImGui.Begin("Color Picker", ImGuiWindowFlags.AlwaysAutoResize);
+			ImGui.ColorPicker3("Color", ref ExampleColor);
+			ImGui.End();
+
 			ImGui.Render();
 
 			var drawDataPtr = ImGui.GetDrawData();
 			UpdateImGuiBuffers(drawDataPtr);
-
+			RenderCommandLists(drawDataPtr, io);
-			if (ImGuiVertexBuffer == null) { return; }
-
-			var commandBuffer = GraphicsDevice.AcquireCommandBuffer();
-			var swapchainTexture = commandBuffer.AcquireSwapchainTexture(Window);
-
-			if (swapchainTexture != null)
-			{
-				commandBuffer.BeginRenderPass(
-					new ColorAttachmentInfo(swapchainTexture, Color.Transparent)
-				);
-
-				commandBuffer.BindGraphicsPipeline(ImGuiPipeline);
-
-				var vertexUniformOffset = commandBuffer.PushVertexShaderUniforms(
-					Matrix4x4.CreateOrthographicOffCenter(0, io.DisplaySize.X, io.DisplaySize.Y, 0, -1, 1)
-				);
-
-				commandBuffer.BindVertexBuffers(ImGuiVertexBuffer);
-				commandBuffer.BindIndexBuffer(ImGuiIndexBuffer, IndexElementSize.Sixteen);
-
-				uint vertexOffset = 0;
-				uint indexOffset = 0;
-
-				for (int n = 0; n < drawDataPtr.CmdListsCount; n += 1)
-				{
-					var cmdList = drawDataPtr.CmdListsRange[n];
-
-					for (int cmdIndex = 0; cmdIndex < cmdList.CmdBuffer.Size; cmdIndex += 1)
-					{
-						var drawCmd = cmdList.CmdBuffer[cmdIndex];
-
-						commandBuffer.BindFragmentSamplers(
-							new TextureSamplerBinding(LoadedTextures[drawCmd.TextureId], ImGuiSampler)
-						);
-
-						commandBuffer.DrawIndexedPrimitives(
-							vertexOffset,
-							indexOffset,
-							drawCmd.ElemCount / 3,
-							vertexUniformOffset,
-							0
-						);
-
-						indexOffset += drawCmd.ElemCount;
-					}
-
-					vertexOffset += (uint) cmdList.VtxBuffer.Size;
-				}
-
-				commandBuffer.EndRenderPass();
-			}
-
-			GraphicsDevice.Submit(commandBuffer);
 		}
 
 		protected override void OnDestroy()