05-13-2020, 12:48 PM
I think you are doing a extra step on texturing.
After you define the UV meshes you first time uses the command Create Texture. This will result in a new material with a diffuse image attached to it.
If you already have a texture image to assign to that mesh, the in the Create Texture you can use the background option to choose it (default is white colour) and then you leave all the other slots (layers) empty (none).
But, if you are going to paint externally the image texture and want to use the UV meshes (Islands) as reference, the you let the background using white colour and use the slots to add an extra layer as Faces (otherwise that area will be transparent) and Draw Edges (with option to draw the island's boundaries or the entire edges).
In this case, after you paint the texture you can just Refresh it in the Outlined window and you will get your model updated.
About the yafaray+background...
I may misunderstood what you want. Maybe you just want put an image behind the rendered object, which could be done in a external image app; or render your scene over a background which that could be achieved using a plane image that is put behind your scene in the opposite side of the camera.
An sample of what you're looking for would help.
After you define the UV meshes you first time uses the command Create Texture. This will result in a new material with a diffuse image attached to it.
If you already have a texture image to assign to that mesh, the in the Create Texture you can use the background option to choose it (default is white colour) and then you leave all the other slots (layers) empty (none).
But, if you are going to paint externally the image texture and want to use the UV meshes (Islands) as reference, the you let the background using white colour and use the slots to add an extra layer as Faces (otherwise that area will be transparent) and Draw Edges (with option to draw the island's boundaries or the entire edges).
In this case, after you paint the texture you can just Refresh it in the Outlined window and you will get your model updated.
About the yafaray+background...
I may misunderstood what you want. Maybe you just want put an image behind the rendered object, which could be done in a external image app; or render your scene over a background which that could be achieved using a plane image that is put behind your scene in the opposite side of the camera.
An sample of what you're looking for would help.