Object Transparency and Specular Issue

So, if you look at the meshes tab, you'll see that the original mesh has two groups: one using the Phong shader, and another using the PhongAlpha shader. It doesn't have a floor shadow mesh.



Glass uses the PhongAlpha shader, so you'll want to clone something that has glass. The problem is that the original item has two diffuse textures, two normal maps, and two specular maps. I don't know of any decor item that has that many textures. So, you'll need to combine the two normal textures into one texture. Same with both diffuse textures and both specular maps.

You can clone the Viney League Encased Scrolls. That has a glass group. It just doesn't have two of every texture, and the UV map is combined into one map unlike the bottle.

Clone the scrolls. Export the textures as DDS files (because each texture uses an alpha channel, and a PNG doesn't support an alpha channel). Combine each, as I stated above, save as DDS, using these settings.



Here is what each texture is if you need help identifying what they are:



-Open the bottle's LOD 0 in Blender.
-Click one of the mesh groups
-Edit mode.
-Move the UV islands somewhere off the map.
-Be careful when moving the islands. Don’t put them on top of each other.
-Repeat for the other mesh group.
-In the 3D viewport, shift + select each mesh group (you can do this in the outliner if needed)
-Join each mesh group with ctrl + J.

Now you have to rearrange the UV map so that all islands are on one map.

-Select the mesh and tab into edit mode.
-On the bottom of the UV map press the little X button to remove the image.



-Enter object mode.
-In the material tab, click the minus sign to remove both of the current materials.
-Add your diffuse that you combined this way:



In the UV Editor, click the up and down arrow and open the image you just imported.



Now you can see how your texture looks on your mesh and you can adjust your islands and see the results in real time.
Note that the islands may become stretched when you add an image that isn’t the same same size as the original image the islands were assigned to. In that case, select the islands that have changed size and press S, Y (or X or Z), 0.5.

Put the islands onto the image that you imported and that’s showing in the UV editor. Adjust them however you want.

When you’re happy with the results, you need to separate the mesh into two groups again. The easiest way to do this in your case is to select mesh parts in the UV editor.

-Press 3 on your keyboard (not the numpad) to enter face select mode. This is important.
-enable “UV sync selection.” It’s at the bottom of the UV editor and looks like two diagonal up and down arrows.
-Now you can see your UV islands without having to select anything on your mesh.



-Select the UV islands that are for the glass part of your mesh.
-Point your mouse cursor in the 3D viewport and press P > selection.
-You should have two mesh parts at this point, in addition to the floor shadow mesh.

Assign the bottle part of your mesh a cut number of 2, the label mesh group should be 1, and the floor mesh would be 0.

Save and export. This is your LOD 0.

To make your shadow mesh, delete the floor plane, join the rest of the meshes (ctrl + J), and assign the cut number of 0. Save and export. Do the same for the other shadow meshes.

You shouldn’t need to adjust the specular map other than combine the two specular maps into one.