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From Brede Johansen, fix to the isImageTranslucent() method.

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This commit is contained in:
Robert Osfield
2005-07-26 16:05:42 +00:00
parent eca7fc210a
commit 83da1b0894
1 changed files with 28 additions and 7 deletions
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35
src/osg/Image.cpp
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@@ -888,13 +888,34 @@ bool Image::isImageTranslucent() const
const unsigned char* d = data(0,it,ir);
switch(_dataType)
{
case(GL_BYTE): return _findLowerAlphaValueInRow(s(), (char*)d +offset, (char)127, delta);
case(GL_UNSIGNED_BYTE): return _findLowerAlphaValueInRow(s(), (unsigned char*)d + offset, (unsigned char)255, delta);
case(GL_SHORT): return _findLowerAlphaValueInRow(s(), (short*)d + offset, (short)32767, delta);
case(GL_UNSIGNED_SHORT): return _findLowerAlphaValueInRow(s(), (unsigned short*)d + offset, (unsigned short)65535, delta);
case(GL_INT): return _findLowerAlphaValueInRow(s(), (int*)d + offset, (int)2147483647, delta);
case(GL_UNSIGNED_INT): return _findLowerAlphaValueInRow(s(), (unsigned int*)d + offset, 4294967295u, delta);
case(GL_FLOAT): return _findLowerAlphaValueInRow(s(), (float*)d + offset, 1.0f, delta);
case(GL_BYTE):
if (_findLowerAlphaValueInRow(s(), (char*)d +offset, (char)127, delta))
return true;
break;
case(GL_UNSIGNED_BYTE):
if (_findLowerAlphaValueInRow(s(), (unsigned char*)d + offset, (unsigned char)255, delta))
return true;
break;
case(GL_SHORT):
if (_findLowerAlphaValueInRow(s(), (short*)d + offset, (short)32767, delta))
return true;
break;
case(GL_UNSIGNED_SHORT):
if (_findLowerAlphaValueInRow(s(), (unsigned short*)d + offset, (unsigned short)65535, delta))
return true;
break;
case(GL_INT):
if (_findLowerAlphaValueInRow(s(), (int*)d + offset, (int)2147483647, delta))
return true;
break;
case(GL_UNSIGNED_INT):
if (_findLowerAlphaValueInRow(s(), (unsigned int*)d + offset, 4294967295u, delta))
return true;
break;
case(GL_FLOAT):
if (_findLowerAlphaValueInRow(s(), (float*)d + offset, 1.0f, delta))
return true;
break;
}
}
}