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Add OPENMW_DECOMPRESS_TEXTURES environment variable to decompress textures in software if not supported by graphics hardware

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Disabled by default due to requiring new functionality that was just added to OSG 3.6 or OpenMW/OSG.
This commit is contained in:
scrawl 2017-10-14 18:28:46 +00:00
parent 548af6dbfb
commit 5fbdb64bb9
1 changed files with 22 additions and 4 deletions
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26
components/resource/imagemanager.cpp
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@ -69,7 +69,6 @@ namespace Resource
// This one works too. Should it be included in isTextureCompressionS3TCSupported()? Submitted as a patch to OSG.
&& !osg::isGLExtensionSupported(0, "GL_S3_s3tc"))
{
std::cerr << "Error loading " << filename << ": no S3TC texture compression support installed" << std::endl;
return false;
}
break;
@ -123,12 +122,31 @@ namespace Resource
return mWarningImage;
}
osg::Image* image = result.getImage();
osg::ref_ptr<osg::Image> image = result.getImage();
image->setFileName(normalized);
if (!checkSupported(image, filename))
{
mCache->addEntryToObjectCache(normalized, mWarningImage);
return mWarningImage;
static bool uncompress = (getenv("OPENMW_DECOMPRESS_TEXTURES") != 0);
if (!uncompress)
{
std::cerr << "Error loading " << filename << ": no S3TC texture compression support installed" << std::endl;
mCache->addEntryToObjectCache(normalized, mWarningImage);
return mWarningImage;
}
else
{
// decompress texture in software if not supported by GPU
// requires update to getColor() to be released with OSG 3.6
osg::ref_ptr<osg::Image> newImage = new osg::Image;
newImage->setFileName(image->getFileName());
newImage->allocateImage(image->s(), image->t(), image->r(), image->isImageTranslucent() ? GL_RGBA : GL_RGB, GL_UNSIGNED_BYTE);
for (int s=0; s<image->s(); ++s)
for (int t=0; t<image->t(); ++t)
for (int r=0; r<image->r(); ++r)
newImage->setColor(image->getColor(s,t,r), s,t,r);
image = newImage;
}
}
mCache->addEntryToObjectCache(normalized, image);