bool Texture::CacheIn()
{
fbyte *im;
if (Bad())
{
return false;
}
if (!IsCachedIn())
{
ILuint image_id;
ILint format;
ilGenImages(1, &image_id);
ilBindImage(image_id);
if(!ilLoadImage((ILstring)m_impl->m_filename.c_str()))
{
ilDeleteImages(1, &image_id);
m_impl->m_bad = true;
cerr << "Failed to load texture file " << m_impl->m_filename << endl;
return false;
}
format=ilGetInteger(IL_DXTC_DATA_FORMAT);
switch(format)
{
case IL_DXT_NO_COMP:
break;
case IL_DXT1:
m_impl->m_dxt_format = TextureImpl::e_dxt1;
break;
case IL_DXT2:
m_impl->m_dxt_format = TextureImpl::e_dxt2;
break;
case IL_DXT3:
m_impl->m_dxt_format = TextureImpl::e_dxt3;
break;
case IL_DXT4:
m_impl->m_dxt_format = TextureImpl::e_dxt4;
break;
case IL_DXT5:
m_impl->m_dxt_format = TextureImpl::e_dxt5;
break;
}
if(m_impl->m_dxt_format!=TextureImpl::e_dxt_none)
{
m_impl->m_width=ilGetInteger(IL_IMAGE_WIDTH);
m_impl->m_height=ilGetInteger(IL_IMAGE_HEIGHT);
m_impl->m_widthP2 = m_impl->m_width;
m_impl->m_heightP2 = m_impl->m_height;
m_impl->m_type = Texture::TYPE_RGBA;
ILint s;
char *data;
s = ilGetDXTCData(NULL,0,format);
m_impl->m_dxt_size = s;
im = new fbyte[s];
ilGetDXTCData(im,s,format);
BindTextureToOpenGL(m_impl, im);
delete [] im;
}
else
{
format=ilGetInteger(IL_IMAGE_FORMAT);
if(format == IL_RGBA || format == IL_BGRA || format == IL_LUMINANCE_ALPHA || m_impl->m_autoGenAlphaMask)
{
ilConvertImage(IL_RGBA,IL_UNSIGNED_BYTE);
m_impl->m_type = Texture::TYPE_RGBA;
}
else
{
ilConvertImage(IL_RGB,IL_UNSIGNED_BYTE);
m_impl->m_type = Texture::TYPE_RGB;
}
m_impl->m_width=ilGetInteger(IL_IMAGE_WIDTH);
m_impl->m_height=ilGetInteger(IL_IMAGE_HEIGHT);
m_impl->m_widthP2 = m_impl->m_width;
m_impl->m_heightP2 = m_impl->m_height;
if((m_impl->m_width & (m_impl->m_width - 1)) != 0 ||
(m_impl->m_height & (m_impl->m_height - 1)) != 0)
{
for(fdword i=2;i<=c_max_texture_size_power;i++)
{
if((m_impl->m_width<<1) > (1UL<<i))
{
m_impl->m_widthP2 = (1UL<<i);
}
if((m_impl->m_height<<1) > (1UL<<i))
{
m_impl->m_heightP2 = (1UL<<i);
}
}
cerr << m_impl->m_filename << " has invalid texture size: " <<
m_impl->m_width << "x" << m_impl->m_height <<
" resizing to " <<
m_impl->m_widthP2 << "x" << m_impl->m_heightP2 << endl;
cerr << " Wasted space due to texture resize: " <<
(((m_impl->m_widthP2 * m_impl->m_heightP2) -
(m_impl->m_width * m_impl->m_height)) /
float(m_impl->m_widthP2 * m_impl->m_heightP2)) * 100.0f <<
"%" << endl;
iluImageParameter(ILU_PLACEMENT, ILU_UPPER_LEFT);
ilClearColour(1.0f,0.2f,0.8f,1.0f);
if(!iluEnlargeCanvas(m_impl->m_widthP2, m_impl->m_heightP2, ilGetInteger(IL_IMAGE_DEPTH)))
{
ilDeleteImages(1, &image_id);
m_impl->m_bad = true;
cerr << "Resize of texture canvas failed" << endl;
return false;
}
}
im = ilGetData();
if(m_impl->m_autoGenAlphaMask)
{
Colour c;
fdword i,j;
for(j=0;j<m_impl->m_height;j++)
{
for(i=0;i<m_impl->m_width;i++)
{
c.FromInteger(((fdword *)im)[j*m_impl->m_widthP2+i],
c_rgba_red_mask, c_rgba_red_shift,
c_rgba_green_mask, c_rgba_green_shift,
c_rgba_blue_mask, c_rgba_blue_shift,
c_rgba_alpha_mask, c_rgba_alpha_shift);
GF1::Colour cd(c - m_impl->m_autoGenAlphaMaskColour);
if(m_impl->m_autoGenAlphaMaskFade && m_impl->m_autoGenAlphaMaskTolerance > 0)
{
c.a = cd.Length() / m_impl->m_autoGenAlphaMaskTolerance;
}
else
{
if(cd.LengthSquared() <= m_impl->m_autoGenAlphaMaskTolerance * m_impl->m_autoGenAlphaMaskTolerance)
{
c.a=0.0f;
}
else
{
c.a=1.0f;
}
}
((fdword *)im)[j*m_impl->m_widthP2+i] = c.ToInteger(255,0,255,8,255,16,255,24);
}
}
}
BindTextureToOpenGL(m_impl, im);
}
ilDeleteImages(1, &image_id);
}
return true;
}
