JDK-4275538 : DirectColorModel.isCompatibleRaster is overly strict
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 1.2.0
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 1999-09-24
  • Updated: 1999-10-05
  • Resolved: 1999-10-05
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Other
1.3.0 kestrelFixed
Related Reports
Relates :  
JDK-4185726 - JDK 1.2 drawImage very slow compared to JDK 1.1.7.
Description
The isCompatibleRaster() method in DirectColorModel requires that the
DirectColorModel have the same number of pixelbits as the Raster's
SampleModel.  Unfortunately, since the SampleModel will calculate the
minimum number of bits required to hold all of the sample masks and since
the DirectColorModel allows the pixelbits given to it to exceed that number,
the two might not match for a DirectColorModel with an overly generous
value for pixelbits.
Comments
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: kestrel FIXED IN: kestrel INTEGRATED IN: kestrel
14-06-2004
WORK AROUND Always specify the smallest number of bits that holds all of the masks for a DirectColorModel.
11-06-2004
SUGGESTED FIX Relax DirectColorModel to not require equality between the ColorModel's pixelbits and the SampleModel.
11-06-2004
EVALUATION Reimplemented isCompatibleRaster method to remove the requirement that the number of sample bits be the same. jim.graham@Eng 1999-09-27
27-09-1999