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#pragma once
#include <cstdint> // for header
#include "ITextureLoader.h"
namespace nCine
{
/// KTX texture loader
class TextureLoaderKtx : public ITextureLoader
{
public:
explicit TextureLoaderKtx(std::unique_ptr<Death::IO::Stream> fileHandle);
private:
static const std::int32_t KtxIdentifierLength = 12;
static std::uint8_t fileIdentifier_[KtxIdentifierLength];
#ifndef DOXYGEN_GENERATING_OUTPUT
// Doxygen 1.12.0 outputs also private structs/unions even if it shouldn't
/// Header for the KTX format
struct KtxHeader
{
std::uint8_t identifier[KtxIdentifierLength];
std::uint32_t endianess;
std::uint32_t glType;
std::uint32_t glTypeSize;
std::uint32_t glFormat;
std::uint32_t glInternalFormat;
std::uint32_t glBaseInternalFormat;
std::uint32_t pixelWidth;
std::uint32_t pixelHeight;
std::uint32_t pixelDepth;
std::uint32_t numberOfArrayElements;
std::uint32_t numberOfFaces;
std::uint32_t numberOfMipmapLevels;
std::uint32_t bytesOfKeyValueData;
};
#endif
/// Reads the KTX header and fills the corresponding structure
bool readHeader(KtxHeader& header);
/// Parses the KTX header to determine its format
bool parseFormat(const KtxHeader& header);
};
}
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