mirror of https://github.com/axmolengine/axmol.git
494 lines
16 KiB
C++
Executable File
494 lines
16 KiB
C++
Executable File
/****************************************************************************
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Copyright (c) 2011 Jirka Fajfr for cocos2d-x
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Copyright (c) 2010-2011 cocos2d-x.org
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Copyright (c) 2008 Apple Inc. All Rights Reserved.
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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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#include "CCTexture2D.h"
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#include "CCTexturePVR.h"
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#include "ccMacros.h"
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#include "CCData.h"
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#include "CCConfiguration.h"
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#include "support/ccUtils.h"
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#include "CCStdC.h"
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#include "CCFileUtils.h"
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#include "support/zip_support/ZipUtils.h"
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#include "ccGLStateCache.h"
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#include <cctype>
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NS_CC_BEGIN
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#define PVR_TEXTURE_FLAG_TYPE_MASK 0xff
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#define PVR_TEXTURE_FLAG_FLIPPED_MASK 0x10000
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// Values taken from PVRTexture.h from http://www.imgtec.com
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enum {
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kPVRTextureFlagMipmap = (1<<8), // has mip map levels
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kPVRTextureFlagTwiddle = (1<<9), // is twiddled
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kPVRTextureFlagBumpmap = (1<<10), // has normals encoded for a bump map
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kPVRTextureFlagTiling = (1<<11), // is bordered for tiled pvr
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kPVRTextureFlagCubemap = (1<<12), // is a cubemap/skybox
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kPVRTextureFlagFalseMipCol = (1<<13), // are there false coloured MIP levels
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kPVRTextureFlagVolume = (1<<14), // is this a volume texture
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kPVRTextureFlagAlpha = (1<<15), // v2.1 is there transparency info in the texture
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kPVRTextureFlagVerticalFlip = (1<<16), // v2.1 is the texture vertically flipped
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};
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/*
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PVR header contains special field called PVRTag. This tag
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is used only to determine that passed file is really pvrt.
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Its set of 4 numbers. Each number casted to the char
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must correspond to the "PVR!" string
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*/
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static unsigned int gPVRTexIdentifier[] = { 'P', 'V', 'R', '!'};
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/*
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List of formats in pvr container
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*/
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enum
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{
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kPVRTextureFlagTypeRGBA_4444= 0x10,
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kPVRTextureFlagTypeRGBA_5551,
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kPVRTextureFlagTypeRGBA_8888,
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kPVRTextureFlagTypeRGB_565,
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kPVRTextureFlagTypeRGB_555, // unsupported
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kPVRTextureFlagTypeRGB_888, // unsupported
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kPVRTextureFlagTypeI_8,
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kPVRTextureFlagTypeAI_88,
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kPVRTextureFlagTypePVRTC_2,
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kPVRTextureFlagTypePVRTC_4,
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kPVRTextureFlagTypeBGRA_8888,
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kPVRTextureFlagTypeA_8,
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};
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/*
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Helps us to convert pvr format to the gl compatible bitspaces
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WARNING!! OpenGL ES 1.1. does not support GL_BGRA format. Its PowerVR
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extension and it will work only on PowerVR chipsets. It means that
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kPVRTextureFlagTypeBGRA_8888 can be used only on apple devices (or PowerVR compatible)
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*/
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static const unsigned int tableFormats[][7] = {
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// - PVR texture format
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// - OpenGL internal format
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// - OpenGL format
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// - OpenGL type
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// - bpp
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// - compressed
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// - Cocos2d texture format constant
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{ kPVRTextureFlagTypeRGBA_4444, GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 16, false, kCCTexture2DPixelFormat_RGBA4444 },
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{ kPVRTextureFlagTypeRGBA_5551, GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, 16, false, kCCTexture2DPixelFormat_RGB5A1 },
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{ kPVRTextureFlagTypeRGBA_8888, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE, 32, false, kCCTexture2DPixelFormat_RGBA8888 },
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{ kPVRTextureFlagTypeRGB_565, GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 16, false, kCCTexture2DPixelFormat_RGB565 },
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{ kPVRTextureFlagTypeA_8, GL_ALPHA, GL_ALPHA, GL_UNSIGNED_BYTE, 8, false, kCCTexture2DPixelFormat_A8 },
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{ kPVRTextureFlagTypeI_8, GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE, 8, false, kCCTexture2DPixelFormat_I8 },
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{ kPVRTextureFlagTypeAI_88, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, 16, false, kCCTexture2DPixelFormat_AI88 },
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#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
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{ kPVRTextureFlagTypePVRTC_2, GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG, -1, -1, 2, true, kCCTexture2DPixelFormat_PVRTC2 },
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{ kPVRTextureFlagTypePVRTC_4, GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, -1, -1, 4, true, kCCTexture2DPixelFormat_PVRTC4 },
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{ kPVRTextureFlagTypeBGRA_8888, GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE, 32, false, kCCTexture2DPixelFormat_RGBA8888 },
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#endif
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};
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//Tells How large is tableFormats
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#define MAX_TABLE_ELEMENTS (sizeof(tableFormats) / sizeof(tableFormats[0]))
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/*
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Helper enum to traverse tableFormats
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*/
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enum {
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kCCInternalPVRTextureFormat,
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kCCInternalOpenGLInternalFormat,
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kCCInternalOpenGLFormat,
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kCCInternalOpenGLType,
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kCCInternalBPP,
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kCCInternalCompressedImage,
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kCCInternalCCTexture2DPixelFormat,
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};
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/*
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Official PVRT header
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*/
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typedef struct _PVRTexHeader
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{
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unsigned int headerLength;
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unsigned int height;
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unsigned int width;
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unsigned int numMipmaps;
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unsigned int flags;
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unsigned int dataLength;
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unsigned int bpp;
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unsigned int bitmaskRed;
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unsigned int bitmaskGreen;
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unsigned int bitmaskBlue;
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unsigned int bitmaskAlpha;
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unsigned int pvrTag;
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unsigned int numSurfs;
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} PVRTexHeader;
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CCTexturePVR::CCTexturePVR() :
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m_uTableFormatIndex(0),
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m_uNumberOfMipmaps(0)
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{
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}
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CCTexturePVR::~CCTexturePVR()
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{
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CCLOGINFO( "cocos2d: deallocing CCTexturePVR" );
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if (m_uName != 0 && ! m_bRetainName )
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glDeleteTextures(1, &m_uName);
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}
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GLuint CCTexturePVR::getName()
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{
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return m_uName;
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}
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unsigned int CCTexturePVR::getWidth()
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{
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return m_uWidth;
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}
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unsigned int CCTexturePVR::getHeight()
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{
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return m_uHeight;
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}
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CCTexture2DPixelFormat CCTexturePVR::getFormat()
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{
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return m_eFormat;
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}
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bool CCTexturePVR::getHasAlpha()
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{
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return m_bHasAlpha;
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}
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bool CCTexturePVR::getRetainName()
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{
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return m_bRetainName;
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}
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void CCTexturePVR::setRetainName(bool var)
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{
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m_bRetainName = var;
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}
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bool CCTexturePVR::unpackPVRData(unsigned char* data, unsigned int len)
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{
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bool success = false;
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PVRTexHeader *header = NULL;
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unsigned int flags, pvrTag;
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unsigned int dataLength = 0, dataOffset = 0, dataSize = 0;
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unsigned int blockSize = 0, widthBlocks = 0, heightBlocks = 0;
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unsigned int width = 0, height = 0, bpp = 4;
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unsigned char *bytes = NULL;
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unsigned int formatFlags;
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//Cast first sizeof(PVRTexHeader) bytes of data stream as PVRTexHeader
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header = (PVRTexHeader *)data;
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//Make sure that tag is in correct formatting
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pvrTag = CC_SWAP_INT32_LITTLE_TO_HOST(header->pvrTag);
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/*
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Check that given data really represents pvrtexture
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[0] = 'P'
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[1] = 'V'
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[2] = 'R'
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[3] = '!'
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*/
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if (gPVRTexIdentifier[0] != ((pvrTag >> 0) & 0xff) ||
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gPVRTexIdentifier[1] != ((pvrTag >> 8) & 0xff) ||
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gPVRTexIdentifier[2] != ((pvrTag >> 16) & 0xff) ||
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gPVRTexIdentifier[3] != ((pvrTag >> 24) & 0xff))
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{
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return false;
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}
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CCConfiguration *configuration = CCConfiguration::sharedConfiguration();
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//Get file flags (in correct byte order)
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flags = CC_SWAP_INT32_LITTLE_TO_HOST(header->flags);
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//Trim to only bites which are needed. Resulting flag is image format
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formatFlags = flags & PVR_TEXTURE_FLAG_TYPE_MASK;
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/*
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When flags combined with flipped mask is not empty (zero).
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It means that image is compressed as flipped. We don't
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support automatic flipping.
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*/
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bool flipped = (flags & kPVRTextureFlagVerticalFlip) ? true : false;
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if ( flipped )
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{
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CCLOG("cocos2d: WARNING: Image is flipped. Regenerate it using PVRTexTool");
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}
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if ( ! configuration->isSupportsNPOT() &&
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(header->width != ccNextPOT(header->width) || header->height != ccNextPOT(header->height)))
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{
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CCLOG("cocos2d: ERROR: Loding an NPOT texture (%dx%d) but is not supported on this device", header->width, header->height);
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return false;
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}
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//Check that sides of texture are power of two
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if(header->width != ccNextPOT(header->width) || header->height != ccNextPOT(header->height))
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{
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CCLOG("cocos2d: WARNING: PVR NPOT textures are not supported. Regenerate it.");
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return false;
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}
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//Go thru format array
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for (m_uTableFormatIndex = 0; m_uTableFormatIndex < (unsigned int)MAX_TABLE_ELEMENTS; m_uTableFormatIndex++)
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{
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//Does image format in table fits to the one parsed from header?
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if (tableFormats[m_uTableFormatIndex][kCCInternalPVRTextureFormat] == formatFlags)
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{
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//Reset num of mipmaps
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m_uNumberOfMipmaps = 0;
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//Get size of maimap
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m_uWidth = width = CC_SWAP_INT32_LITTLE_TO_HOST(header->width);
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m_uHeight = height = CC_SWAP_INT32_LITTLE_TO_HOST(header->height);
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//Do we use alpha ?
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if (CC_SWAP_INT32_LITTLE_TO_HOST(header->bitmaskAlpha))
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m_bHasAlpha = true;
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else
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m_bHasAlpha = false;
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//Get ptr to where data starts..
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dataLength = CC_SWAP_INT32_LITTLE_TO_HOST(header->dataLength);
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//Move by size of header
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bytes = ((unsigned char *)data) + sizeof(PVRTexHeader);
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m_eFormat = (CCTexture2DPixelFormat)( tableFormats[m_uTableFormatIndex][kCCInternalCCTexture2DPixelFormat] );
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bpp = tableFormats[m_uTableFormatIndex][kCCInternalBPP];
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// Calculate the data size for each texture level and respect the minimum number of blocks
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while (dataOffset < dataLength)
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{
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switch (formatFlags) {
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case kPVRTextureFlagTypePVRTC_2:
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blockSize = 8 * 4; // Pixel by pixel block size for 2bpp
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widthBlocks = width / 8;
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heightBlocks = height / 4;
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bpp = 2;
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break;
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case kPVRTextureFlagTypePVRTC_4:
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blockSize = 4 * 4; // Pixel by pixel block size for 4bpp
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widthBlocks = width / 4;
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heightBlocks = height / 4;
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bpp = 4;
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break;
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case kPVRTextureFlagTypeBGRA_8888:
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if (CCConfiguration::sharedConfiguration()->isSupportsBGRA8888() == false)
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{
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CCLOG("cocos2d: TexturePVR. BGRA8888 not supported on this device");
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return false;
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}
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default:
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blockSize = 1;
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widthBlocks = width;
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heightBlocks = height;
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bpp = tableFormats[m_uTableFormatIndex][kCCInternalBPP];
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break;
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}
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// Clamp to minimum number of blocks
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if (widthBlocks < 2)
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widthBlocks = 2;
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if (heightBlocks < 2)
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heightBlocks = 2;
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dataSize = widthBlocks * heightBlocks * ((blockSize * bpp) / 8);
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unsigned int packetLength = (dataLength-dataOffset);
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packetLength = packetLength > dataSize ? dataSize : packetLength;
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//Make record to the mipmaps array and increment coutner
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m_asMipmaps[m_uNumberOfMipmaps].address = bytes+dataOffset;
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m_asMipmaps[m_uNumberOfMipmaps].len = packetLength;
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m_uNumberOfMipmaps++;
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//Check that we didn't overflow
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CCAssert(m_uNumberOfMipmaps < CC_PVRMIPMAP_MAX,
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"TexturePVR: Maximum number of mimpaps reached. Increate the CC_PVRMIPMAP_MAX value");
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dataOffset += packetLength;
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//Update width and height to the next lower power of two
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width = MAX(width >> 1, 1);
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height = MAX(height >> 1, 1);
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}
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//Mark pass as success
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success = true;
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break;
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}
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}
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if (false == success)
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{
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CCLOG("cocos2d: WARNING: Unssupported PVR Pixel Format: 0x%2x", formatFlags);
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}
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return success;
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}
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bool CCTexturePVR::createGLTexture()
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{
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unsigned int width = m_uWidth;
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unsigned int height = m_uHeight;
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GLenum err;
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if (m_uNumberOfMipmaps > 0)
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{
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if (m_uName != 0)
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{
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ccGLDeleteTexture(m_uName);
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}
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glGenTextures(1, &m_uName);
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glBindTexture(GL_TEXTURE_2D, m_uName);
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}
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// Generate textures with mipmaps
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for (unsigned int i = 0; i < m_uNumberOfMipmaps; ++i)
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{
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GLenum internalFormat = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLInternalFormat];
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GLenum format = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLFormat];
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GLenum type = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLType];
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bool compressed = tableFormats[m_uTableFormatIndex][kCCInternalCompressedImage] == 1;
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if (compressed == true && CCConfiguration::sharedConfiguration()->isSupportsPVRTC() == false)
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{
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CCLOG("cocos2d: WARNING: PVRTC images are not supported");
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return false;
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}
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unsigned char *data = m_asMipmaps[i].address;
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unsigned int datalen = m_asMipmaps[i].len;
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if (compressed == true)
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{
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glCompressedTexImage2D(GL_TEXTURE_2D, i, internalFormat, width, height, 0, datalen, data);
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}
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else
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{
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glTexImage2D(GL_TEXTURE_2D, i, internalFormat, width, height, 0, format, type, data);
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}
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if(i > 0 && (width != height || ccNextPOT(width) != width ) )
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{
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CCLOG("cocos2d: TexturePVR. WARNING. Mipmap level %lu is not squared. Texture won't render correctly. width=%lu != height=%lu", i, width, height);
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}
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err = glGetError();
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if (err != GL_NO_ERROR)
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{
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CCLOG("cocos2d: TexturePVR: Error uploading compressed texture level: %u . glError: 0x%04X", (unsigned int)i, err);
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return false;
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}
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//Update width and height to the next lower power of two
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width = MAX(width >> 1, 1);
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height = MAX(height >> 1, 1);
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}
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return true;
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}
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bool CCTexturePVR::initWithContentsOfFile(const char* path)
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{
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unsigned char* pvrdata = NULL;
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int pvrlen = 0;
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std::string lowerCase(path);
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for (unsigned int i = 0; i < lowerCase.length(); ++i)
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{
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lowerCase[i] = tolower(lowerCase[i]);
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}
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if (lowerCase.find(".ccz") != std::string::npos)
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{
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pvrlen = ZipUtils::ccInflateCCZFile(path, &pvrdata);
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}
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else if (lowerCase.find(".gz") != std::string::npos)
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{
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pvrlen = ZipUtils::ccInflateGZipFile(path, &pvrdata);
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}
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else
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{
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pvrdata = CCFileUtils::sharedFileUtils()->sharedFileUtils()->getFileData(path, "rb", (unsigned long *)(&pvrlen));
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}
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if (pvrlen < 0)
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{
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this->release();
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return false;
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}
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m_uNumberOfMipmaps = 0;
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m_uName = 0;
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m_uWidth = m_uHeight = 0;
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m_bHasAlpha = false;
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m_bRetainName = false; // cocos2d integration
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if ( !unpackPVRData(pvrdata, pvrlen) || !createGLTexture() )
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{
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delete [] pvrdata;
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this->release();
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return false;
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}
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delete [] pvrdata;
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return true;
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}
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CCTexturePVR * CCTexturePVR::pvrTextureWithContentsOfFile(const char* path)
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{
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CCTexturePVR * pTexture = new CCTexturePVR();
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if(true == pTexture->initWithContentsOfFile(path))
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{
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pTexture->autorelease();
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return pTexture;
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}
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else
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{
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return NULL;
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}
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}
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NS_CC_END
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