mirror of https://github.com/axmolengine/axmol.git
138 lines
4.0 KiB
C++
138 lines
4.0 KiB
C++
/****************************************************************************
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Copyright (c) 2011 Jirka Fajfr for cocos2d-x
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Copyright (c) 2010 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CCPVRTEXTURE_H__
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#define __CCPVRTEXTURE_H__
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#include "CCStdC.h"
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#include "CCGL.h"
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#include "CCObject.h"
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#include "CCArray.h"
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NS_CC_BEGIN
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//Forward definition for CCData
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class CCData;
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/**
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@brief Structure which can tell where mimap begins and how long is it
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*/
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struct CCPVRMipmap {
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unsigned char *address;
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unsigned int len;
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};
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/**
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@brief Detemine how many mipmaps can we have.
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Its same as define but it respects namespaces
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*/
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enum {
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CC_PVRMIPMAP_MAX = 16,
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};
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/** CCTexturePVR
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Object that loads PVR images.
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Supported PVR formats:
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- RGBA8888
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- BGRA8888
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- RGBA4444
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- RGBA5551
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- RGB565
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- A8
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- I8
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- AI88
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- PVRTC 4BPP
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- PVRTC 2BPP
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Limitations:
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Pre-generated mipmaps, such as PVR textures with mipmap levels embedded in file,
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are only supported if all individual sprites are of _square_ size.
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To use mipmaps with non-square textures, instead call CCTexture2D#generateMipmap on the sheet texture itself
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(and to save space, save the PVR sprite sheet without mip maps included).
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*/
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class CCTexturePVR : public CCObject
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{
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public:
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CCTexturePVR();
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virtual ~CCTexturePVR();
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/** initializes a CCTexturePVR with a path */
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bool initWithContentsOfFile(const char* path);
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/** creates and initializes a CCTexturePVR with a path */
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static CCTexturePVR * pvrTextureWithContentsOfFile(const char* path);
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CC_PROPERTY_READONLY(GLuint, m_uName, Name)
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CC_PROPERTY_READONLY(unsigned int, m_uWidth, Width)
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CC_PROPERTY_READONLY(unsigned int, m_uHeight, Height)
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CC_PROPERTY_READONLY(CCTexture2DPixelFormat, m_eFormat, Format)
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CC_PROPERTY_READONLY(bool, m_bHasAlpha, HasAlpha)
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// cocos2d integration
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CC_PROPERTY(bool, m_bRetainName, RetainName);
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protected:
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/*
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Unpacks data (data of pvr texture file) and determine
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how many mipmaps it uses (m_uNumberOfMipmaps). Adresses
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of mimaps (m_asMipmaps). And basic data like size, format
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and alpha presence
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*/
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bool unpackPVRData(unsigned char* data, unsigned int len);
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/*
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Binds all mipmaps to the GL state machine as separate
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textures
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*/
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bool createGLTexture();
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/*
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Index to the tableFormats array. Which tells us what exact
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format is file which initializes this object.
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*/
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unsigned int m_uTableFormatIndex;
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/*
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How many mipmaps do we have. It must be at least one
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when proper initialization finishes
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*/
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CC_PROPERTY_READONLY(unsigned int, m_uNumberOfMipmaps, NumberOfMipmaps);
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/*
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Makrs for mipmaps. Each entry contains position in file
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and lenght of data which represents one mipmap.
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*/
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struct CCPVRMipmap m_asMipmaps[CC_PVRMIPMAP_MAX];
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};
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NS_CC_END
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#endif //__CCPVRTEXTURE_H__
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