mirror of https://github.com/axmolengine/axmol.git
687 lines
19 KiB
C++
687 lines
19 KiB
C++
/****************************************************************************
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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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/*
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* Support for RGBA_4_4_4_4 and RGBA_5_5_5_1 was copied from:
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* https://devforums.apple.com/message/37855#37855 by a1studmuffin
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*/
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#include "CCTexture2D.h"
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#include "ccConfig.h"
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#include "ccMacros.h"
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#include "CCConfiguration.h"
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#include "platform/platform.h"
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#include "CCImage.h"
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#include "CCGL.h"
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#include "support/ccUtils.h"
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#include "platform/CCPlatformMacros.h"
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#include "CCTexturePVR.h"
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#include "CCDirector.h"
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#if CC_ENABLE_CACHE_TEXTTURE_DATA
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#include "CCTextureCache.h"
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#endif
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namespace cocos2d {
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#if CC_FONT_LABEL_SUPPORT
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// FontLabel support
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#endif// CC_FONT_LABEL_SUPPORT
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//CLASS IMPLEMENTATIONS:
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// If the image has alpha, you can create RGBA8 (32-bit) or RGBA4 (16-bit) or RGB5A1 (16-bit)
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// Default is: RGBA8888 (32-bit textures)
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static CCTexture2DPixelFormat g_defaultAlphaPixelFormat = kCCTexture2DPixelFormat_Default;
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// By default PVR images are treated as if they don't have the alpha channel premultiplied
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static bool PVRHaveAlphaPremultiplied_ = false;
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CCTexture2D::CCTexture2D()
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: m_uPixelsWide(0)
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, m_uPixelsHigh(0)
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, m_uName(0)
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, m_fMaxS(0.0)
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, m_fMaxT(0.0)
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, m_bHasPremultipliedAlpha(false)
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, m_bPVRHaveAlphaPremultiplied(true)
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{
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}
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CCTexture2D::~CCTexture2D()
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{
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#if CC_ENABLE_CACHE_TEXTTURE_DATA
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VolatileTexture::removeTexture(this);
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#endif
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CCLOGINFO("cocos2d: deallocing CCTexture2D %u.", m_uName);
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if(m_uName)
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{
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glDeleteTextures(1, &m_uName);
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}
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}
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CCTexture2DPixelFormat CCTexture2D::getPixelFormat()
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{
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return m_ePixelFormat;
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}
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unsigned int CCTexture2D::getPixelsWide()
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{
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return m_uPixelsWide;
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}
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unsigned int CCTexture2D::getPixelsHigh()
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{
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return m_uPixelsHigh;
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}
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GLuint CCTexture2D::getName()
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{
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return m_uName;
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}
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const CCSize& CCTexture2D::getContentSizeInPixels()
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{
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return m_tContentSize;
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}
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CCSize CCTexture2D::getContentSize()
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{
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CCSize ret;
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ret.width = m_tContentSize.width / CC_CONTENT_SCALE_FACTOR();
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ret.height = m_tContentSize.height / CC_CONTENT_SCALE_FACTOR();
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return ret;
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}
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GLfloat CCTexture2D::getMaxS()
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{
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return m_fMaxS;
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}
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void CCTexture2D::setMaxS(GLfloat maxS)
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{
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m_fMaxS = maxS;
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}
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GLfloat CCTexture2D::getMaxT()
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{
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return m_fMaxT;
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}
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void CCTexture2D::setMaxT(GLfloat maxT)
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{
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m_fMaxT = maxT;
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}
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void CCTexture2D::releaseData(void *data)
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{
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free(data);
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}
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void* CCTexture2D::keepData(void *data, unsigned int length)
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{
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CC_UNUSED_PARAM(length);
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//The texture data mustn't be saved becuase it isn't a mutable texture.
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return data;
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}
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bool CCTexture2D::getHasPremultipliedAlpha()
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{
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return m_bHasPremultipliedAlpha;
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}
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bool CCTexture2D::initWithData(const void *data, CCTexture2DPixelFormat pixelFormat, unsigned int pixelsWide, unsigned int pixelsHigh, const CCSize& contentSize)
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{
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glPixelStorei(GL_UNPACK_ALIGNMENT,1);
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glGenTextures(1, &m_uName);
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glBindTexture(GL_TEXTURE_2D, m_uName);
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this->setAntiAliasTexParameters();
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// Specify OpenGL texture image
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switch(pixelFormat)
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{
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case kCCTexture2DPixelFormat_RGBA8888:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
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break;
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case kCCTexture2DPixelFormat_RGB888:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
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break;
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case kCCTexture2DPixelFormat_RGBA4444:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, data);
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break;
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case kCCTexture2DPixelFormat_RGB5A1:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, data);
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break;
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case kCCTexture2DPixelFormat_RGB565:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, data);
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break;
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case kCCTexture2DPixelFormat_AI88:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, data);
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break;
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case kCCTexture2DPixelFormat_A8:
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glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, (GLsizei)pixelsWide, (GLsizei)pixelsHigh, 0, GL_ALPHA, GL_UNSIGNED_BYTE, data);
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break;
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default:
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CCAssert(0, "NSInternalInconsistencyException");
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}
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m_tContentSize = contentSize;
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m_uPixelsWide = pixelsWide;
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m_uPixelsHigh = pixelsHigh;
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m_ePixelFormat = pixelFormat;
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m_fMaxS = contentSize.width / (float)(pixelsWide);
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m_fMaxT = contentSize.height / (float)(pixelsHigh);
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m_bHasPremultipliedAlpha = false;
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return true;
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}
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char * CCTexture2D::description(void)
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{
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char *ret = new char[100];
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sprintf(ret, "<CCTexture2D | Name = %u | Dimensions = %u x %u | Coordinates = (%.2f, %.2f)>", m_uName, m_uPixelsWide, m_uPixelsHigh, m_fMaxS, m_fMaxT);
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return ret;
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}
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// implementation CCTexture2D (Image)
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bool CCTexture2D::initWithImage(CCImage * uiImage)
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{
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unsigned int POTWide, POTHigh;
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if(uiImage == NULL)
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{
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CCLOG("cocos2d: CCTexture2D. Can't create Texture. UIImage is nil");
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this->release();
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return false;
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}
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CCConfiguration *conf = CCConfiguration::sharedConfiguration();
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#if CC_TEXTURE_NPOT_SUPPORT
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if( conf->isSupportsNPOT() )
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{
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POTWide = uiImage->getWidth();
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POTHigh = uiImage->getHeight();
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}
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else
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#endif
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{
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POTWide = ccNextPOT(uiImage->getWidth());
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POTHigh = ccNextPOT(uiImage->getHeight());
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}
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unsigned maxTextureSize = conf->getMaxTextureSize();
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if( POTHigh > maxTextureSize || POTWide > maxTextureSize )
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{
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CCLOG("cocos2d: WARNING: Image (%u x %u) is bigger than the supported %u x %u", POTWide, POTHigh, maxTextureSize, maxTextureSize);
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this->release();
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return NULL;
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}
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// always load premultiplied images
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return initPremultipliedATextureWithImage(uiImage, POTWide, POTHigh);
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}
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bool CCTexture2D::initPremultipliedATextureWithImage(CCImage *image, unsigned int POTWide, unsigned int POTHigh)
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{
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unsigned char* data = NULL;
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unsigned char* tempData =NULL;
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unsigned int* inPixel32 = NULL;
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unsigned short* outPixel16 = NULL;
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bool hasAlpha;
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CCSize imageSize;
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CCTexture2DPixelFormat pixelFormat;
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hasAlpha = image->hasAlpha();
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size_t bpp = image->getBitsPerComponent();
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// compute pixel format
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if(hasAlpha)
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{
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pixelFormat = g_defaultAlphaPixelFormat;
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}
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else
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{
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if (bpp >= 8)
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{
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pixelFormat = kCCTexture2DPixelFormat_RGB888;
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}
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else
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{
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CCLOG("cocos2d: CCTexture2D: Using RGB565 texture since image has no alpha");
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pixelFormat = kCCTexture2DPixelFormat_RGB565;
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}
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}
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imageSize = CCSizeMake((float)(image->getWidth()), (float)(image->getHeight()));
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switch(pixelFormat) {
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case kCCTexture2DPixelFormat_RGBA8888:
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case kCCTexture2DPixelFormat_RGBA4444:
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case kCCTexture2DPixelFormat_RGB5A1:
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case kCCTexture2DPixelFormat_RGB565:
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case kCCTexture2DPixelFormat_A8:
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tempData = (unsigned char*)(image->getData());
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CCAssert(tempData != NULL, "NULL image data.");
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if(image->getWidth() == (short)POTWide && image->getHeight() == (short)POTHigh)
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{
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data = new unsigned char[POTHigh * POTWide * 4];
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memcpy(data, tempData, POTHigh * POTWide * 4);
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}
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else
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{
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data = new unsigned char[POTHigh * POTWide * 4];
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memset(data, 0, POTHigh * POTWide * 4);
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unsigned char* pPixelData = (unsigned char*) tempData;
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unsigned char* pTargetData = (unsigned char*) data;
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int imageHeight = image->getHeight();
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for(int y = 0; y < imageHeight; ++y)
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{
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memcpy(pTargetData+POTWide*4*y, pPixelData+(image->getWidth())*4*y, (image->getWidth())*4);
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}
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}
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break;
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case kCCTexture2DPixelFormat_RGB888:
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tempData = (unsigned char*)(image->getData());
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CCAssert(tempData != NULL, "NULL image data.");
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if(image->getWidth() == (short)POTWide && image->getHeight() == (short)POTHigh)
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{
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data = new unsigned char[POTHigh * POTWide * 3];
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memcpy(data, tempData, POTHigh * POTWide * 3);
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}
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else
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{
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data = new unsigned char[POTHigh * POTWide * 3];
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memset(data, 0, POTHigh * POTWide * 3);
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unsigned char* pPixelData = (unsigned char*) tempData;
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unsigned char* pTargetData = (unsigned char*) data;
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int imageHeight = image->getHeight();
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for(int y = 0; y < imageHeight; ++y)
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{
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memcpy(pTargetData+POTWide*3*y, pPixelData+(image->getWidth())*3*y, (image->getWidth())*3);
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}
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}
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break;
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default:
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CCAssert(0, "Invalid pixel format");
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}
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// Repack the pixel data into the right format
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if(pixelFormat == kCCTexture2DPixelFormat_RGB565) {
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//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGGBBBBB"
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tempData = new unsigned char[POTHigh * POTWide * 2];
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inPixel32 = (unsigned int*)data;
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outPixel16 = (unsigned short*)tempData;
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unsigned int length = POTWide * POTHigh;
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for(unsigned int i = 0; i < length; ++i, ++inPixel32)
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{
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*outPixel16++ =
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((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) | // R
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((((*inPixel32 >> 8) & 0xFF) >> 2) << 5) | // G
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((((*inPixel32 >> 16) & 0xFF) >> 3) << 0); // B
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}
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delete [] data;
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data = tempData;
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}
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else if (pixelFormat == kCCTexture2DPixelFormat_RGBA4444) {
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//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRGGGGBBBBAAAA"
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tempData = new unsigned char[POTHigh * POTWide * 2];
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inPixel32 = (unsigned int*)data;
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outPixel16 = (unsigned short*)tempData;
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unsigned int length = POTWide * POTHigh;
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for(unsigned int i = 0; i < length; ++i, ++inPixel32)
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{
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*outPixel16++ =
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((((*inPixel32 >> 0) & 0xFF) >> 4) << 12) | // R
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((((*inPixel32 >> 8) & 0xFF) >> 4) << 8) | // G
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((((*inPixel32 >> 16) & 0xFF) >> 4) << 4) | // B
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((((*inPixel32 >> 24) & 0xFF) >> 4) << 0); // A
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}
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delete [] data;
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data = tempData;
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}
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else if (pixelFormat == kCCTexture2DPixelFormat_RGB5A1) {
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//Convert "RRRRRRRRRGGGGGGGGBBBBBBBBAAAAAAAA" to "RRRRRGGGGGBBBBBA"
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tempData = new unsigned char[POTHigh * POTWide * 2];
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inPixel32 = (unsigned int*)data;
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outPixel16 = (unsigned short*)tempData;
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unsigned int length = POTWide * POTHigh;
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for(unsigned int i = 0; i < length; ++i, ++inPixel32)
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{
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*outPixel16++ =
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((((*inPixel32 >> 0) & 0xFF) >> 3) << 11) | // R
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((((*inPixel32 >> 8) & 0xFF) >> 3) << 6) | // G
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((((*inPixel32 >> 16) & 0xFF) >> 3) << 1) | // B
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((((*inPixel32 >> 24) & 0xFF) >> 7) << 0); // A
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}
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delete []data;
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data = tempData;
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}
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else if (pixelFormat == kCCTexture2DPixelFormat_A8)
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{
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// fix me, how to convert to A8
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pixelFormat = kCCTexture2DPixelFormat_RGBA8888;
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/*
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* The code can not work, how to convert to A8?
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*
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tempData = new unsigned char[POTHigh * POTWide];
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inPixel32 = (unsigned int*)data;
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outPixel8 = tempData;
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unsigned int length = POTWide * POTHigh;
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for(unsigned int i = 0; i < length; ++i, ++inPixel32)
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{
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*outPixel8++ = (*inPixel32 >> 24) & 0xFF;
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}
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delete []data;
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data = tempData;
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*/
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}
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if (data)
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{
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this->initWithData(data, pixelFormat, POTWide, POTHigh, imageSize);
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// should be after calling super init
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m_bHasPremultipliedAlpha = image->isPremultipliedAlpha();
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//CGContextRelease(context);
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delete [] data;
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}
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return true;
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}
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// implementation CCTexture2D (Text)
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bool CCTexture2D::initWithString(const char *text, const char *fontName, float fontSize)
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{
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return initWithString(text, CCSizeMake(0,0), CCTextAlignmentCenter, fontName, fontSize);
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}
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bool CCTexture2D::initWithString(const char *text, const CCSize& dimensions, CCTextAlignment alignment, const char *fontName, float fontSize)
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{
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#if CC_ENABLE_CACHE_TEXTTURE_DATA
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// cache the texture data
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VolatileTexture::addStringTexture(this, text, dimensions, alignment, fontName, fontSize);
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#endif
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CCImage image;
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CCImage::ETextAlign eAlign = (CCTextAlignmentCenter == alignment) ? CCImage::kAlignCenter
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: (CCTextAlignmentLeft == alignment) ? CCImage::kAlignLeft : CCImage::kAlignRight;
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if (! image.initWithString(text, (int)dimensions.width, (int)dimensions.height, eAlign, fontName, (int)fontSize))
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{
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return false;
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}
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return initWithImage(&image);
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}
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// implementation CCTexture2D (Drawing)
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void CCTexture2D::drawAtPoint(const CCPoint& point)
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{
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GLfloat coordinates[] = {
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0.0f, m_fMaxT,
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m_fMaxS,m_fMaxT,
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0.0f, 0.0f,
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m_fMaxS,0.0f };
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GLfloat width = (GLfloat)m_uPixelsWide * m_fMaxS,
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height = (GLfloat)m_uPixelsHigh * m_fMaxT;
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GLfloat vertices[] = {
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point.x, point.y, 0.0f,
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width + point.x, point.y, 0.0f,
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point.x, height + point.y, 0.0f,
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width + point.x, height + point.y, 0.0f };
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glBindTexture(GL_TEXTURE_2D, m_uName);
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glVertexPointer(3, GL_FLOAT, 0, vertices);
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glTexCoordPointer(2, GL_FLOAT, 0, coordinates);
|
|
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
|
}
|
|
|
|
void CCTexture2D::drawInRect(const CCRect& rect)
|
|
{
|
|
GLfloat coordinates[] = {
|
|
0.0f, m_fMaxT,
|
|
m_fMaxS,m_fMaxT,
|
|
0.0f, 0.0f,
|
|
m_fMaxS,0.0f };
|
|
|
|
GLfloat vertices[] = { rect.origin.x, rect.origin.y, /*0.0f,*/
|
|
rect.origin.x + rect.size.width, rect.origin.y, /*0.0f,*/
|
|
rect.origin.x, rect.origin.y + rect.size.height, /*0.0f,*/
|
|
rect.origin.x + rect.size.width, rect.origin.y + rect.size.height, /*0.0f*/ };
|
|
|
|
glBindTexture(GL_TEXTURE_2D, m_uName);
|
|
glVertexPointer(2, GL_FLOAT, 0, vertices);
|
|
glTexCoordPointer(2, GL_FLOAT, 0, coordinates);
|
|
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
|
}
|
|
|
|
#ifdef CC_SUPPORT_PVRTC
|
|
// implementation CCTexture2D (PVRTC);
|
|
bool CCTexture2D::initWithPVRTCData(const void *data, int level, int bpp, bool hasAlpha, int length, CCTexture2DPixelFormat pixelFormat)
|
|
{
|
|
if( !(CCConfiguration::sharedConfiguration()->isSupportsPVRTC()) )
|
|
{
|
|
CCLOG("cocos2d: WARNING: PVRTC images is not supported.");
|
|
this->release();
|
|
return false;
|
|
}
|
|
|
|
glGenTextures(1, &m_uName);
|
|
glBindTexture(GL_TEXTURE_2D, m_uName);
|
|
|
|
this->setAntiAliasTexParameters();
|
|
|
|
GLenum format;
|
|
GLsizei size = length * length * bpp / 8;
|
|
if(hasAlpha) {
|
|
format = (bpp == 4) ? GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG : GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
|
|
} else {
|
|
format = (bpp == 4) ? GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG : GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
|
|
}
|
|
if(size < 32) {
|
|
size = 32;
|
|
}
|
|
glCompressedTexImage2D(GL_TEXTURE_2D, level, format, length, length, 0, size, data);
|
|
|
|
m_tContentSize = CCSizeMake((float)(length), (float)(length));
|
|
m_uPixelsWide = length;
|
|
m_uPixelsHigh = length;
|
|
m_fMaxS = 1.0f;
|
|
m_fMaxT = 1.0f;
|
|
m_bHasPremultipliedAlpha = PVRHaveAlphaPremultiplied_;
|
|
m_ePixelFormat = pixelFormat;
|
|
|
|
return true;
|
|
}
|
|
#endif // CC_SUPPORT_PVRTC
|
|
|
|
bool CCTexture2D::initWithPVRFile(const char* file)
|
|
{
|
|
bool bRet = false;
|
|
// nothing to do with CCObject::init
|
|
|
|
CCTexturePVR *pvr = new CCTexturePVR;
|
|
bRet = pvr->initWithContentsOfFile(file);
|
|
|
|
if (bRet)
|
|
{
|
|
pvr->setRetainName(true); // don't dealloc texture on release
|
|
|
|
m_uName = pvr->getName();
|
|
m_fMaxS = 1.0f;
|
|
m_fMaxT = 1.0f;
|
|
m_uPixelsWide = pvr->getWidth();
|
|
m_uPixelsHigh = pvr->getHeight();
|
|
m_tContentSize = CCSizeMake((float)m_uPixelsWide, (float)m_uPixelsHigh);
|
|
m_bHasPremultipliedAlpha = PVRHaveAlphaPremultiplied_;
|
|
m_ePixelFormat = pvr->getFormat();
|
|
|
|
this->setAntiAliasTexParameters();
|
|
pvr->release();
|
|
}
|
|
else
|
|
{
|
|
CCLOG("cocos2d: Couldn't load PVR image %s", file);
|
|
}
|
|
|
|
return bRet;
|
|
}
|
|
|
|
void CCTexture2D::PVRImagesHavePremultipliedAlpha(bool haveAlphaPremultiplied)
|
|
{
|
|
PVRHaveAlphaPremultiplied_ = haveAlphaPremultiplied;
|
|
}
|
|
|
|
|
|
//
|
|
// Use to apply MIN/MAG filter
|
|
//
|
|
// implementation CCTexture2D (GLFilter)
|
|
|
|
void CCTexture2D::generateMipmap()
|
|
{
|
|
CCAssert( m_uPixelsWide == ccNextPOT(m_uPixelsWide) && m_uPixelsHigh == ccNextPOT(m_uPixelsHigh), "Mimpap texture only works in POT textures");
|
|
glBindTexture( GL_TEXTURE_2D, this->m_uName );
|
|
ccglGenerateMipmap(GL_TEXTURE_2D);
|
|
}
|
|
|
|
void CCTexture2D::setTexParameters(ccTexParams *texParams)
|
|
{
|
|
CCAssert( (m_uPixelsWide == ccNextPOT(m_uPixelsWide) && m_uPixelsHigh == ccNextPOT(m_uPixelsHigh)) ||
|
|
(texParams->wrapS == GL_CLAMP_TO_EDGE && texParams->wrapT == GL_CLAMP_TO_EDGE),
|
|
"GL_CLAMP_TO_EDGE should be used in NPOT textures");
|
|
glBindTexture( GL_TEXTURE_2D, this->m_uName );
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, texParams->minFilter );
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, texParams->magFilter );
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, texParams->wrapS );
|
|
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, texParams->wrapT );
|
|
}
|
|
|
|
void CCTexture2D::setAliasTexParameters()
|
|
{
|
|
ccTexParams texParams = { GL_NEAREST, GL_NEAREST, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE };
|
|
this->setTexParameters(&texParams);
|
|
}
|
|
|
|
void CCTexture2D::setAntiAliasTexParameters()
|
|
{
|
|
ccTexParams texParams = { GL_LINEAR, GL_LINEAR, GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE };
|
|
this->setTexParameters(&texParams);
|
|
}
|
|
|
|
//
|
|
// Texture options for images that contains alpha
|
|
//
|
|
// implementation CCTexture2D (PixelFormat)
|
|
|
|
void CCTexture2D::setDefaultAlphaPixelFormat(CCTexture2DPixelFormat format)
|
|
{
|
|
g_defaultAlphaPixelFormat = format;
|
|
}
|
|
|
|
|
|
CCTexture2DPixelFormat CCTexture2D::defaultAlphaPixelFormat()
|
|
{
|
|
return g_defaultAlphaPixelFormat;
|
|
}
|
|
|
|
unsigned int CCTexture2D::bitsPerPixelForFormat()
|
|
{
|
|
unsigned int ret = 0;
|
|
|
|
switch (m_ePixelFormat)
|
|
{
|
|
case kCCTexture2DPixelFormat_RGBA8888:
|
|
ret = 32;
|
|
break;
|
|
case kCCTexture2DPixelFormat_RGB565:
|
|
ret = 16;
|
|
break;
|
|
case kCCTexture2DPixelFormat_A8:
|
|
ret = 8;
|
|
break;
|
|
case kCCTexture2DPixelFormat_RGBA4444:
|
|
ret = 16;
|
|
break;
|
|
case kCCTexture2DPixelFormat_RGB5A1:
|
|
ret = 16;
|
|
break;
|
|
case kCCTexture2DPixelFormat_PVRTC4:
|
|
ret = 4;
|
|
break;
|
|
case kCCTexture2DPixelFormat_PVRTC2:
|
|
ret = 2;
|
|
break;
|
|
case kCCTexture2DPixelFormat_I8:
|
|
ret = 8;
|
|
break;
|
|
case kCCTexture2DPixelFormat_AI88:
|
|
ret = 16;
|
|
break;
|
|
case kCCTexture2DPixelFormat_RGB888:
|
|
ret = 24;
|
|
break;
|
|
default:
|
|
ret = -1;
|
|
CCAssert(false, "illegal pixel format");
|
|
CCLOG("bitsPerPixelForFormat: %d, cannot give useful result", m_ePixelFormat);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
}//namespace cocos2d
|