Thanks a lot for your support and your explanations to provide a better understanding for the newbies like me.

So I added these three lines instead, and it worked:

graphics.GraphicsDevice.BlendState = BlendState.AlphaBlend; graphics.GraphicsDevice.DepthStencilState = DepthStencilState.Default; graphics.GraphicsDevice.SamplerStates[0] = SamplerState.LinearWrap;

With those, I'm being quite a bit more aggressive with resetting graphics device state.

When you do stuff with SpriteBatch, it sets a variety of states on the graphics device, to get it to draw things a certain way. It doesn't bother to unset them. That seems like poor design, at first glance. (OK, it actually always seems like poor design, but…) The reason for this is just how low level graphics APIs tend to work. They're state machines that maintain a specific state once moved to it, up until there's a reason to change to something else. Since we weren't doing anything to set it back to the way it was, it stays in the "wrong" state and our drawing for the box ends up looking funky.

The original line we both put in attempts to revert that, but it doesn't revert everything. It has worked just fine for me in many, many cases, but not in this one.

So I got more aggressive and reset the blend state, the depth stencil state, and the sampler state all back to what we'd typically expect in 3D drawing.

Anyway, try out those three lines just before drawing in 3D or just after drawing in 2D. It should fix it for you.

I put the line after spriteBatch.End() (so 2D drawing was over) and right before calling DrawModel(), where the 3D model drawing takes place. Is that the right location for that line of code ?

Now it is working. But first a couple of comments….

About the model file. I did not rid off the mipmaps (I do not know what they are) and I did not switch profile to HiDef (I did not know I could). This is, I used the model exactly as I sent it to you. The code you sent worked fine with the model I had sent to you.

The first difference in my code with yours was that in Draw method you were looping ModelMesh through model.Meshes, and then ModelMeshPart through mesh.MeshPart. In my code I had it exactly as in the tutorial, this is, ModelMesh loop and then BasicEffect loop through mesh.Effects. But this did not make my code to work.

The second difference had nothing to do with the model itself. I was using Texture2D as background (your stars image) and drawing to screen with SpriteBatch & Co….. This was interferencing in some way with the model and avoiding the correct display of the textures. Once I changed it, the model was perfectly shown on screen with the full six textures on the corresponding faces, exactly as with the code you sent.

May I ask why would the background Texture2D was a problem ? I still want this, or other, background to be used. How could I do it ?

Thanks a lot for your support.

Thanks a lot for your support. I've made a quick test, and your code works ok with my model. I mean, I didn't touch anything in my project, just I did replace my code at Game1.cs with the one in your post… and it did work perfectly.

I'll check now what's the difference between our codes and let you know.

Thanks again.

What I did to get it to load is this, though:

1. Got rid of the mipmaps. The model was set up to generate mipmaps, but the model content processor didn't want to do that because the images weren't a power of two. You could definitely make them a power of two and keep the mipmaps, but to just get it to display, I didn't care for the mipmaps and so disabling them was the easiest choice.
2. Switched my profile from Reach to HiDef. Again, this was because Reach required powers of two, while HiDef does not.

Considering you're seeing the model at all, you've probably already accounted for these two little bumps in the road.

Now here's the bottom line. The model worked fine for me, so as you suspected, it was probably some small problem with your code.

I'm including my code below. Half of the non-template code in there is to get it to spin in circles, so you'll see I've got what amounts to a spherical coordinate with my distance, theta angle, and phi angle. (Don't worry too much if you don't understand that. Your problem is probably down in the Draw method somewhere, so compare your current code against that.)

using System; using System.Collections.Generic; using System.Linq; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework.Content; using Microsoft.Xna.Framework.GamerServices; using Microsoft.Xna.Framework.Graphics; using Microsoft.Xna.Framework.Input; using Microsoft.Xna.Framework.Media; namespace WindowsGame3 { /// <summary> /// This is the main type for your game /// </summary> public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; private Model model; private float theta = 0; private float phi = 0; private float distance = 5000; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; } /// <summary> /// Allows the game to perform any initialization it needs to before starting to run. /// This is where it can query for any required services and load any non-graphic /// related content. Calling base.Initialize will enumerate through any components /// and initialize them as well. /// </summary> protected override void Initialize() { // TODO: Add your initialization logic here base.Initialize(); } /// <summary> /// LoadContent will be called once per game and is the place to load /// all of your content. /// </summary> protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); model = Content.Load<Model>("Preba"); } /// <summary> /// UnloadContent will be called once per game and is the place to unload /// all content. /// </summary> protected override void UnloadContent() { // TODO: Unload any non ContentManager content here } /// <summary> /// Allows the game to run logic such as updating the world, /// checking for collisions, gathering input, and playing audio. /// </summary> /// <param name="gameTime">Provides a snapshot of timing values.</param> protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); theta += 0.05f; phi += 0.01f; base.Update(gameTime); } private Vector3 SphericalToCartesian(float theta, float phi, float distance) { double x = distance * Math.Sin(phi) * Math.Cos(theta); double y = distance * Math.Cos(phi); double z = distance * Math.Sin(phi) * Math.Sin(theta); return new Vector3((float)x, (float)y, (float)z); } /// <summary> /// This is called when the game should draw itself. /// </summary> /// <param name="gameTime">Provides a snapshot of timing values.</param> protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); foreach (ModelMesh mesh in model.Meshes) { foreach (ModelMeshPart part in mesh.MeshParts) { BasicEffect effect = (BasicEffect)part.Effect; effect.World = Matrix.Identity; effect.View = Matrix.CreateLookAt(SphericalToCartesian(theta, phi, distance), new Vector3(0, 0, 0), Vector3.UnitY); effect.Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45), 800f/480f, 1f, 8000f); } mesh.Draw(); } base.Draw(gameTime); } } }

If your code looks the same as this, or if you run this code and it still looks wrong, my next guess is that it might not be able to find all of the textures or process them all correctly. So the next thing I'd look at if this code doesn't work for you is to double-check that all six of your textures are in the same directory as the model and that you don't have any compiler warnings (or errors) when you build the full project from scratch. (Do like a Build > Rebuild All on the menu.)

Hope that helps…

www.filedropper.com/mymodel

The zip contains the fbx in ASCII format already edited to point the textures in the same folder. Also there are the six png files with the textures.

Thanks.

I should have said something about the linking thing. When you're new, the Wikidot system doesn't let you post links in an effort to prevent spam. You do have to make several posts before your karma level goes up high enough to where you can post direct links. I'm not sure what the exact number is, but it's something like 10 or 25. What people do instead in the mean time is just post something like "www (dot) example (dot) com (slash) path/to/file". Basically, make it not look like a real URL to fool the system. I can go in and edit the post manually so that it works correctly, but even with that sort of hacked/broken URL, I can figure out well enough what it should be to keep helping you.

Unfortunately, I don't have control over this setting. It's a Wikidot setting, and I can't do anything about it. Eventually, you'll get enough karma to where you can post links.

I'm trying to post a link with the model, but I'm not allowed to… (maybe low karma ?)

Regards.

I'm quite a newbie in this XNA programming. I'm trying to import an fbx object (a single rectangular prism) that uses a different texture for each of its faces. I have made this model in Sketchup and export it from there to fbx. The exported fbx file is in Ascii format and when edited, I can see correctly referenced the six texture files (actually .png format). I've added the contents to the project and used LoadContent method to load it into the application.

Up to here, everything is fine. But when I run the application, the model only show one of the six textures in only one of its six faces. The other faces seem to have the background colour of the texture, but no the image itself. The only texture shown is properly positioned, scaled and on the correct face.

I have tried as well to manually add the texture to the various basic effects of the mesh. In that case, the same face is shown with its correct texture, but the other faces are totally obscured (and a little transparent).

What am I missing ?

Thanks in advance for your help.