Hi All,

I am having trouble cube mapping when using a DDS cube map, I'm just getting a black cube which leads me to believe I have missing something simple, here's the code so far:

DDS_IMAGE_DATA *pDDSImageData = LoadDDSFile(filename);
//compressedTexture = -1;

if(pDDSImageData != NULL)
{
    int height = pDDSImageData->height;
    int width = pDDSImageData->width;
    int numMipMaps = pDDSImageData->numMipMaps;
    int blockSize;

    GLenum cubefaces[6] = {
        GL_TEXTURE_CUBE_MAP_POSITIVE_X,
        GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
        GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
        GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
        GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
        GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
    };

    if( pDDSImageData->format == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT )
        blockSize = 8;
    else
        blockSize = 16;
    glGenTextures( 1, &textureId ); int nSize;
    int nOffset = 0;
    glEnable(GL_TEXTURE_CUBE_MAP);
    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER,
        GL_LINEAR_MIPMAP_LINEAR);
    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);

    for(int face = 0; face < 6; face++)
    {
        for( int i = 0; i < numMipMaps; i++ )
        {
            if( width  == 0 ) width  = 1;
            if( height == 0 ) height = 1;
            glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_GENERATE_MIPMAP, GL_TRUE);
            nSize = ((width+3)>>2) * ((height+3)>>2) * blockSize;

            glCompressedTexImage2D(cubefaces[face] ,
                i,
                pDDSImageData->format,
                width,
                height,
                0,
                nSize,
                pDDSImageData->pixels + nOffset );


            nOffset += nSize;

            // Half the image size for the next mip-map level...
            width  = (width  / 2);
            height = (height / 2);
        }
    }
}

Once this code is called I bind the texture using glBindTexture and draw a cube using GL_QUADS and glTexCoord3f.

Thank you for reading and all comments are welcome, sorry if any of the formatting comes out wrong.