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/**
@file BinaryFormat.h
@maintainer Morgan McGuire, http://graphics.cs.williams.edu
@author 2005-06-03
@edited 2005-06-03
Copyright 2000-2005, Morgan McGuire.
All rights reserved.
*/
#ifndef G3D_BINARYFORMAT_H
#define G3D_BINARYFORMAT_H
#include "G3D/platform.h"
#include "G3D/g3dmath.h"
namespace G3D {
class Vector2;
class Vector2int16;
class Vector3;
class Vector3int16;
class Vector4;
class Vector4int16;
class Color3;
class Color3uint8;
class Color4;
class Color4uint8;
/**
Some values like float16 and int128 have no current CPU data structure that implements them but are useful
for file formats and for GPUs.
CHUNK_BINFMT data follows the protocol.
*/
// Must be packed int 16 bits for the chunk reader
// We can't name these just "INT8" etc. because some libraries #define names like that
enum BinaryFormat {
FIRST_BINFMT = 1000,
BOOL8_BINFMT,
UINT8_BINFMT, INT8_BINFMT, UINT16_BINFMT, INT16_BINFMT, UINT32_BINFMT, INT32_BINFMT, UINT64_BINFMT, INT64_BINFMT, UINT128_BINFMT, INT128_BINFMT,
FLOAT16_BINFMT, FLOAT32_BINFMT, FLOAT64_BINFMT,
VECTOR2_BINFMT, VECTOR2INT16_BINFMT,
VECTOR3_BINFMT, VECTOR3INT16_BINFMT,
VECTOR4_BINFMT, VECTOR4INT16_BINFMT,
COLOR3_BINFMT, COLOR3UINT8_BINFMT, COLOR3INT16_BINFMT,
COLOR4_BINFMT, COLOR4UINT8_BINFMT, COLOR4INT16_BINFMT,
STRING_BINFMT, STRINGEVEN_BINFMT, STRING8_BINFMT, STRING16_BINFMT, STRING32_BINFMT,
CHUNK_BINFMT,
CUSTOM_BINFMT,
LAST_BINFMT
};
}
/** A macro that maps G3D types to format constants.
(e.g. binaryFormatOf(Vector3) == VECTOR3_BINFMT).
*/
// This implementation is designed to meet the following constraints:
// 1. Work around the many MSVC++ partial template bugs
// 2. Work for primitive types (e.g. int)
#define binaryFormatOf(T) (G3D::_internal::_BinaryFormat<T>::x())
namespace G3D {
namespace _internal {
template<class T> class _BinaryFormat {
public:
static BinaryFormat x() {
return CUSTOM_BINFMT;
}
};
}}
/**
Macro to declare the underlying format (as will be returned by glFormatOf)
of a type. For example,
<PRE>
DECLARE_BINARYFORMATOF(Vector4, VECTOR4_BINFMT)
</PRE>
Use this so you can make vertex arrays of your own classes and not just
the standard ones.
*/
#define DECLARE_BINARYFORMATOF(CType, EnumType) \
namespace G3D { \
namespace _internal { \
template<> class _BinaryFormat<CType> { \
public: \
static BinaryFormat x() { \
return EnumType; \
} \
}; \
} \
}
DECLARE_BINARYFORMATOF( bool, BOOL8_BINFMT )
DECLARE_BINARYFORMATOF( uint8, UINT8_BINFMT )
DECLARE_BINARYFORMATOF( int8, INT8_BINFMT )
DECLARE_BINARYFORMATOF( uint16, UINT16_BINFMT )
DECLARE_BINARYFORMATOF( int16, INT16_BINFMT )
DECLARE_BINARYFORMATOF( uint32, UINT32_BINFMT )
DECLARE_BINARYFORMATOF( int32, INT32_BINFMT )
DECLARE_BINARYFORMATOF( uint64, UINT64_BINFMT )
DECLARE_BINARYFORMATOF( int64, INT64_BINFMT )
DECLARE_BINARYFORMATOF( float32, FLOAT32_BINFMT )
DECLARE_BINARYFORMATOF( float64, FLOAT64_BINFMT )
DECLARE_BINARYFORMATOF( Vector2, VECTOR2_BINFMT )
DECLARE_BINARYFORMATOF( Vector2int16, VECTOR2INT16_BINFMT )
DECLARE_BINARYFORMATOF( Vector3, VECTOR3_BINFMT )
DECLARE_BINARYFORMATOF( Vector3int16, VECTOR3INT16_BINFMT )
DECLARE_BINARYFORMATOF( Vector4, VECTOR4_BINFMT )
DECLARE_BINARYFORMATOF( Vector4int16, VECTOR4INT16_BINFMT )
DECLARE_BINARYFORMATOF( Color3, COLOR3_BINFMT )
DECLARE_BINARYFORMATOF( Color3uint8, COLOR3UINT8_BINFMT )
DECLARE_BINARYFORMATOF( Color4, COLOR4_BINFMT )
DECLARE_BINARYFORMATOF( Color4uint8, COLOR4UINT8_BINFMT )
namespace G3D {
/** Returns -1 if the format is custom, otherwise the byte size
of a single element in this format.*/
int32 byteSize(BinaryFormat f);
} //G3D
#endif
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