NormalMapping in entity with multisubobject
Blitz3D Forums/Blitz3D Programming/NormalMapping in entity with multisubobject
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| Hi all, I've a character textured with multisubobject and I'm trying to put a normal map texture that will correspond with every texture of the model. The problem comes when reading surfaces. Blitz seems to allow various diffuse textures but just one Normal map at channel 0. It's possible to put various normal map textures to an entity with various diffuse textures? Thanks in advance!! |
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| Multisubobjects ? Are you talking about child meshes, a mesh hierarchy loaded with LoadAnimMesh? Well basicly every surface may have it's brushes and every brush may have multiple texture layers and a total of 2 UV Coords sets per surface. In theory you should be able to assign an individual normalmap for every child. You have to iterate recursively trough the mesh hierarchy tho. |
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| no, no, I'm talking about just an entity textured with various textures, but not its childs. Imagine a floor with textures for sand, a road and some texture of grass... a common 3dsmax multisubobject... Various diffuse textures in the same model. some idea? |
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| Just image you make two cubes in 3dmax, one of them have a brick texture of 256x256 and the other one has a sand texture of the same size. Now collapse them in one object. The resultant object has two textures in diffuse channel. That's the kind of object I would like to put normal mapping, but I can't because there are two materials and only one channel (0) for normal mapping... My question is if there exist some way to do that... |
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| If you don't collapse it, but simply export it as a scene with multiple objects, blitz will load it as one mesh (using LoadMesh) with multiple surfaces. Each surface will have the diffuse map on UV channel 0. As far as I know 3DS doesn't support more than one UV set. You could export it twice, one time with the duffuse map and the second time with the normalmap. then import both in Blitz and read out the normalmaps UVs and set them in the other mesh. Maybe if you use some export paths for the B3D format you can export both sets in one step. (b3D pipeline or something, or the max to dx8 to ultimateunwrap to b3d path). However, when you load a mesh, the order of the surfaces will not be the same every time, so you need to identify each surface by the filenames of the textues used by the brushes (see SaveB3D example in the code archives on how to determine the used textures) Hope this helps. |
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| ehrm i was just reading your postings again. It seems you want to use LoadAnimMesh since it's a character, so my previous advice isn't that useful. Currently I only see one solution: put multiple textures into one file to make it a single-surface thing. |
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| Blitz doesn't support normal maps does it? not without middleware etc |
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| Thanks jfk, I guess I understand your approach but could you explain me a little more? Thanks! :) |
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