mirror of https://github.com/axmolengine/axmol.git
150 lines
4.5 KiB
C++
150 lines
4.5 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 "cocoa/CCObject.h"
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#include "cocoa/CCArray.h"
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NS_CC_BEGIN
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/**
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* @addtogroup textures
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* @{
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*/
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/**
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@brief Structure which can tell where mipmap 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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typedef struct _ccPVRTexturePixelFormatInfo {
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GLenum internalFormat;
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GLenum format;
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GLenum type;
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uint32_t bpp;
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bool compressed;
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bool alpha;
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Texture2DPixelFormat ccPixelFormat;
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} ccPVRTexturePixelFormatInfo;
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/**
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@brief Determine 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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/** TexturePVR
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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 Texture2D#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 TexturePVR : public Object
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{
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public:
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TexturePVR();
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virtual ~TexturePVR();
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/** initializes a TexturePVR with a path */
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bool initWithContentsOfFile(const char* path);
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/** creates and initializes a TexturePVR with a path */
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static TexturePVR* create(const char* path);
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// properties
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/** texture id name */
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inline unsigned int getName() { return _name; }
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/** texture width */
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inline unsigned int getWidth() { return _width; }
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/** texture height */
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inline unsigned int getHeight() { return _height; }
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/** whether or not the texture has alpha */
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inline bool hasAlpha() { return _hasAlpha; }
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/** whether or not the texture has premultiplied alpha */
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inline bool hasPremultipliedAlpha() { return _hasPremultipliedAlpha; }
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/** whether or not the texture should use hasPremultipliedAlpha instead of global default */
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inline bool isForcePremultipliedAlpha() { return _forcePremultipliedAlpha; }
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/** how many mipmaps the texture has. 1 means one level (level 0 */
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inline unsigned int getNumberOfMipmaps() { return _numberOfMipmaps; }
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inline Texture2DPixelFormat getFormat() { return _format; }
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inline bool isRetainName() { return _retainName; }
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inline void setRetainName(bool retainName) { _retainName = retainName; }
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private:
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bool unpackPVRv2Data(unsigned char* data, unsigned int len);
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bool unpackPVRv3Data(unsigned char* dataPointer, unsigned int dataLength);
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bool createGLTexture();
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protected:
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struct CCPVRMipmap _asMipmaps[CC_PVRMIPMAP_MAX]; // pointer to mipmap images
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unsigned int _numberOfMipmaps; // number of mipmap used
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unsigned int _width, _height;
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GLuint _name;
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bool _hasAlpha;
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bool _hasPremultipliedAlpha;
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bool _forcePremultipliedAlpha;
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// cocos2d integration
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bool _retainName;
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Texture2DPixelFormat _format;
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const ccPVRTexturePixelFormatInfo *_pixelFormatInfo;
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};
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// end of textures group
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/// @}
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NS_CC_END
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#endif //__CCPVRTEXTURE_H__
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