Access to SUBTEXNO_DIFFUSE : diffuse map name and channel ID in 3ds Max ?

[Mootools]

Hello,

I am trying to retrieve VRay diffuse file map name and the UV channel to which it is applied.

Actually I have:

IParamBlock2 *pblockMaps=mtl->GetParamBlockByID(VRayMtlParameters::vrayMtl_maps _id);

int diffuse_map_on = pblockMaps->GetInt(VRAYMTL_TEXMAP_ON_PARAMID(VRayMtlParameter s::SUBTEXNO_DIFFUSE), ip->GetTime());
if (diffuse_map_on)
{
Texmap *diffuse_texture = pblockMaps->GetTexmap(VRAYMTL_TEXMAP_PARAMID(VRayMtlParameter s::SUBTEXNO_DIFFUSE));

// How can I access the Diffuse file map name and map channel number to which the map is applied ?



Any help would be great !

Thanks,
Manuel

[vlado]

This is really a 3ds Max question rather than pdplayer, isn't it? In any case, it depends on what kind of texture is attached. If diffuse_texture->ClassID() returns Class_ID(BMTEX_CLASS_ID,0) then it is a bitmap texture, and you can use the following code to extract the file name:

MSTR getBitmapFileName(Texmap *texmap, TimeValue time) {
    if (!texmap || texmap->ClassID()!=Class_ID(BMTEX_CLASS_ID, 0))
        return _T("");

    // Bitmap texture pblock ID, taken from bmtex.h in the 3ds Max SDK
    enum { bmtex_params,bmtex_time };

    IParamBlock2 *pblock2=texmap->GetParamBlockByID(bmtex_params);
    if (!pblock2)
        return _T("");

    // Bitmap texture parameter IDs, taken from bmtex.h in the 3ds Max SDK
    enum {
        bmtex_clipu,bmtex_clipv,bmtex_clipw,bmtex_cliph,
        bmtex_jitter,bmtex_usejitter,
        bmtex_apply,bmtex_crop_place,
        bmtex_filtering,
        bmtex_monooutput,
        bmtex_rgboutput,
        bmtex_alphasource,
        bmtex_premultalpha,
        bmtex_bitmap,
        bmtex_coords, // access for UVW mapping
        bmtex_output, //output window
        bmtex_filename // bitmap filename virtual parameter, JBW 2/23/99
    };

    PBBitmap *pbbitmap=pblock2->GetBitmap(bmtex_bitmap, time);
    if (!pbbitmap)
        return _T("");

    MaxSDK::Util::Path path=pbbitmap->bi.GetPathEx();
    return path.GetString();
}

The source code of the Bitmap texture is included with the 3ds Max sdk in [maxsdk]\samples\materials\bmptex.h and bmptex.cpp

Best regards,
Vlado

[Mootools]

Thanks for the piece of code. Very appreciated!
You are true, I post the question in the bad forum. We might move the post if you want.

In my case the Texmap classid is not BMTEX_CLASS_ID, but this is something else.
The Texmap class id is : 0x6EC3730C

I guess this is specific to VRay, but I can't find any documentation on it.

Looking the diffuse in Material Editor lead to the joined image capture, which is this 0x6EC3730C Texmap classid.
When I click on Map #28 button it opens the BMTEX_CLASS_ID TexMap, but I don't know how to access to it programatically from the previous one.

Any help is very appreciated!

Thanks

[Jarrod]

I'm trying to do the same thing, any further info on this?