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genesis-3d_engine/Engine/rendersystem/base/PixelFormat.h

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genesis-3d engine version 1.3. match the genesis editor version 1.3.0.653.
2014-05-05 14:50:33 +08:00
/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU
http://www.genesis-3d.com.cn
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __PixelFormat_H__
#define __PixelFormat_H__
#include "../foundation/util/string.h"
namespace RenderBase
{
/** from Ogre
* Flags defining some on/off properties of pixel formats
*/
enum PixelFormatFlags {
// This format has an alpha channel
PFF_HASALPHA = 0x00000001,
// This format is compressed. This invalidates the values in elemBytes,
// elemBits and the bit counts as these might not be fixed in a compressed format.
PFF_COMPRESSED = 0x00000002,
// This is a floating point format
PFF_FLOAT = 0x00000004,
// This is a depth format (for depth textures)
PFF_DEPTH = 0x00000008,
// Format is in native endian. Generally true for the 16, 24 and 32 bits
// formats which can be represented as machine integers.
PFF_NATIVEENDIAN = 0x00000010,
// This is an intensity format instead of a RGB one. The luminance
// replaces R,G and B. (but not A)
PFF_LUMINANCE = 0x00000020
};
/** From Ogre Pixel component format */
enum PixelComponentType
{
PCT_BYTE = 0, /// Byte per component (8 bit fixed 0.0..1.0)
PCT_SHORT = 1, /// Short per component (16 bit fixed 0.0..1.0))
PCT_FLOAT16 = 2, /// 16 bit float per component
PCT_FLOAT32 = 3, /// 32 bit float per component
PCT_COUNT = 4 /// Number of pixel types
};
//-----------------------------------------------------------------------
/** From Ogre
* A record that describes a pixel format in detail.
*/
struct PixelFormatDescription {
/* Name of the format, as in the enum */
const char *name;
/* Number of bytes one element (colour value) takes. */
unsigned char elemBytes;
/* Pixel format flags, see enum PixelFormatFlags for the bit field
* definitions
*/
uint32 flags;
/** Component type
*/
PixelComponentType componentType;
/** Component count
*/
unsigned char componentCount;
/* Number of bits for red(or luminance), green, blue, alpha
*/
unsigned char rbits,gbits,bbits,abits; /*, ibits, dbits, ... */
/* Masks and shifts as used by packers/unpackers */
uint32 rmask, gmask, bmask, amask;
unsigned char rshift, gshift, bshift, ashift;
};
// <20>޸Ĵ<DEB8>ö<EFBFBD><C3B6>ʱ<EFBFBD>ǵ<EFBFBD>Ҫ<EFBFBD>ͽű<CDBD><C5B1>ĸ<EFBFBD>ʽͬ<CABD><CDAC>ScriptRuntime._PixelFormat<61><74>
// <20><><EFBFBD>ظ<EFBFBD>ʽ<EFBFBD>е<EFBFBD>˳<EFBFBD><CBB3>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD>˳<EFBFBD>򡣾<EFBFBD><F2A1A3BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>ֽ<EFBFBD><D6BD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ڵ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>е<EFBFBD>ƽ̨<C6BD><CCA8>
// <20><><EFBFBD><EFBFBD>A8R8G8B8<42><38><EFBFBD><EFBFBD>{A<><41>R<EFBFBD><52>G<EFBFBD><47>B}<7D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD>˻<EFBFBD><CBBB><EFBFBD><EFBFBD>ϣ<EFBFBD>PC<50><43><EFBFBD>ϣ<EFBFBD><CFA3>ڴ<EFBFBD>˳<EFBFBD><CBB3><EFBFBD><EFBFBD>[B<><42>G<EFBFBD><47>R<EFBFBD><52>A]<5D><>
// <20><><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD>D3D<33><44>OpenGL<47><4C>һ<EFBFBD>µģ<C2B5><C4A3><EFBFBD><EFBFBD>ڴ<EFBFBD>˳<EFBFBD><CBB3>ȡ<EFBFBD><C8A1><EFBFBD>ڿͻ<DABF><CDBB>˻<EFBFBD><CBBB><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3>
// !!!!!!!!!!!<21>޸<EFBFBD>ö<EFBFBD>ٺ󣬼ǵö<C7B5>Ӧ<EFBFBD>޸<EFBFBD>PixelFormatDescription _pixelFormats <20><> CommonCount<6E><74>iOSCount <20>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
class PixelFormat
{
public:
/// enums
enum Code
{
// begin common
X8R8G8B8 = 0,
R8G8B8,
B8G8R8,
B8G8R8A8,
R8G8B8A8,
A8B8G8R8,
A8R8G8B8,
R5G6B5,
A1R5G5B5,
A4R4G4B4,
DXT1,
DXT2,
DXT3,
DXT4,
DXT5,
R16F,
G16R16F,
A16B16G16R16F,
R32F,
G32R32F,
A32B32G32R32F,
A8,
L8,
L8A8, //[2012/4/12 zhongdaohuan] mygui <20>õ<EFBFBD><C3B5>ĸ<EFBFBD>ʽ
L16,
G16R16,
D24X8,
D24S8,
// end common CommonCount
// begin iPhone / PowerVR
PVRTC_RGB2,
PVRTC_RGBA2,
PVRTC_RGB4,
PVRTC_RGBA4,
// end iphone / PowerVR end iOSCount
//ETC
ETC1_RGB8,
NumPixelFormats,
InvalidPixelFormat,
DescPixelFormatsCount, // <09><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>NumPixelFormats<74><73>InvalidPixelFormat<61><74>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>BUG<55><47><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ظ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><>¼<EFBFBD>ֿ<EFBFBD><D6BF>ı<EFBFBD>־λ<D6BE><CEBB> <20><><EFBFBD><EFBFBD>ö<EFBFBD><C3B6>֮<EFBFBD>󣬼ǵ<F3A3ACBC><C7B5>޸<EFBFBD>
CommonCount = D24S8 + 1,
iOSCount = PVRTC_RGBA4 + 1,
};
/// From Ogre:
static bool IsCompressed(Code code);
/** From Ogre: Returns the size in bytes of an element of the given pixel format.
* GetNumElemBytes
* @param: Code code
* @return: SizeT
The size in bytes of an element. See Remarks.
* @see:
* @remark:
Passing PF_UNKNOWN will result in returning a size of 0 bytes.
*/
static SizeT GetNumElemBytes(Code code);
// From Ogre: Gives the masks for the R, G, B and A component. Only valid for native endian formats
static void GetBitMasks(Code format, uint32 rgba[4]);
// From Ogre: Gives the number of bits (RGBA) for a format. For non-colour formats (dxt, depth) this returns [0,0,0,0].
static void GetBitDepths(Code format, int rgba[4]);
// From Ogre:Returns the size in memory of a region with the given extents and pixel format with consecutive memory layout
static SizeT GetMemorySize(SizeT width, SizeT height, SizeT depth, Code format);
/// convert from string
static Code FromString(const Util::String& str);
/// convert to string
static Util::String ToString(Code code);
/** From Ogre: Returns the property flags for this pixel format
* GetFlags
* @param: Code format
* @return: unsigned int
A bitfield combination of PFF_HASALPHA, PFF_ISCOMPRESSED,
PFF_FLOAT, PFF_DEPTH, PFF_NATIVEENDIAN, PFF_LUMINANCE
* @see:
* @remark:
*/
static unsigned int GetFlags( Code format );
};
}
#endif // __PixelFormat_H__
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