//
//  ktx.bt
//  tools/010-templates
//
//  Created by Ryan Huffman
//  Copyright 2018 High Fidelity, Inc.
//
//  KTX file template
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

struct Header {
    char identifier[12];
    uint32 endianness<format=hex>;
    uint32 glType;
    uint32 glTypeSize;
    uint32 glFormat;
    uint32 glInternalFormat;
    uint32 glBaseInternalFormat;
    uint32 pixelWidth;
    uint32 pixelHeight;
    uint32 pixelDepth;
    uint32 numberOfArrayElements;
    uint32 numberOfFaces;
    uint32 numberOfMipmapLevels;
    uint32 bytesOfKeyValueData;
};

struct KV {
    uint32 byteSize;
    local uint32 keyLength = ReadStringLength(FTell());
    char key[keyLength];
    char value[byteSize - keyLength] <format=hex>;
    char padding[3 - ((byteSize + 3) % 4)];
};

string kvName(KV& kv) {
    local string s;
    SPrintf(s, "KeyValue (%s) ", kv.key);
    return s;
}

struct File {
    Header header;
    local uint32 endOfKV = FTell() + header.bytesOfKeyValueData;
    while (FTell() < endOfKV) {
        KV keyValue <optimize=false, name=kvName>;
    }
    char imageData[FileSize() - FTell()];
} file;