pvr.ccz sometimes shows a white image.

cocos2d-x C++
#1

pvr.ccz sometimes shows a white image when I change scene.

I use below to generate pvr.ccz

${TP} —smart-update —format cocos2d —data Resources/flop/flop_card-hd.plist —sheet Resources/flop/flop_card-hd.pvr.ccz —dither-fs-alpha —premultiply-alpha —opt RGBA4444 Art/flop/*.png

#2

I have same issue. Anybody have kind of solution?

#3

same to me when changing scenes, happens to me when Particle System is added to one scene. if removed particle system, everything is fine… don’t know why.

#4

I have same issue. and solve it by modify cocos2d-x source code of CCTexturePVR.cpp ,and test it’s OK.
Plz take a look at that comment below!

bool CCTexturePVR::createGLTexture()
{
unsigned int width = m_uWidth;
unsigned int height = m_uHeight;
GLenum err;

/////////////add by vincent begin 120602//////////////////
err = glGetError();
if (err != GL_NO_ERROR)
{
printf(“cocos2d: TexturePVR: glError: 0x%04X”, err);
}
/////////////add by vincent end 120602//////////////////

if (m_uNumberOfMipmaps > 0)
{
if (m_uName != 0)
{
glDeleteTextures(1, &m_uName);
}

glGenTextures(1, &m_uName);
glBindTexture(GL_TEXTURE_2D, m_uName);
}

// Generate textures with mipmaps
for (unsigned int i = 0; i < m_uNumberOfMipmaps; ++i)
{
GLenum internalFormat = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLInternalFormat];
GLenum format = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLFormat];
GLenum type = tableFormats[m_uTableFormatIndex][kCCInternalOpenGLType];
bool compressed = tableFormats[m_uTableFormatIndex][kCCInternalCompressedImage] 1;

    if (compressed  true && CCConfiguration::sharedConfiguration()-\>isSupportsPVRTC()  false) 
    {
        CCLOG("cocos2d: WARNING: PVRTC images are not supported");
        return false;
    }           

    unsigned char \*data = m\_asMipmaps[i].address;
    unsigned int datalen = m\_asMipmaps[i].len;

    if (compressed  true)

{
glCompressedTexImage2D(GL_TEXTURE_2D, i, internalFormat, width, height, 0, datalen, data);
}
else
{
glTexImage2D(GL_TEXTURE_2D, i, internalFormat, width, height, 0, format, type, data);
}

if(i > 0 && (width != height || ccNextPOT(width) != width ) )
{
CCLOG (“cocos2d: TexturePVR. WARNING. Mipmap level %lu is not squared. Texture won’t render correctly. width=%lu != height=%lu”, i, width, height);
}

err = glGetError();
if (err != GL_NO_ERROR)
{
CCLOG (“cocos2d: TexturePVR: Error uploading compressed texture level: %u . glError: 0x%04X”, (unsigned int)i, err);
return false;
}

//Update width and height to the next lower power of two
width = MAX (width >> 1, 1);
height = MAX (height >> 1, 1);
}

return true;
}

I had reported this bug to Minggo Zhang, maybe he can solve it in future.

#5

Wow it’s great! it solve my problem Thanks a lot, 小 苏 (I am a copy-paster).

To all others, if you met the same problem, try his solution first.