javax.media.opengl
Class DefaultGLCapabilitiesChooser
java.lang.Object
javax.media.opengl.DefaultGLCapabilitiesChooser
- All Implemented Interfaces:
- CapabilitiesChooser, GLCapabilitiesChooser
public class DefaultGLCapabilitiesChooser
- extends Object
- implements GLCapabilitiesChooser
The default implementation of the GLCapabilitiesChooser
interface, which provides consistent visual
selection behavior across platforms. The precise algorithm is
deliberately left loosely specified. Some properties are:
- As long as there is at least one available non-null
GLCapabilities which matches the "stereo" option, will return a
valid index.
- Attempts to match as closely as possible the given
GLCapabilities, but will select one with fewer capabilities (i.e.,
lower color depth) if necessary.
- Prefers hardware-accelerated visuals to
non-hardware-accelerated.
- If there is no exact match, prefers a more-capable visual to
a less-capable one.
- If there is more than one exact match, chooses an arbitrary
one.
- May select the opposite of a double- or single-buffered
visual (based on the user's request) in dire situations.
- Color depth (including alpha) mismatches are weighted higher
than depth buffer mismatches, which are in turn weighted higher
than accumulation buffer (including alpha) and stencil buffer
depth mismatches.
- If a valid windowSystemRecommendedChoice parameter is
supplied, chooses that instead of using the cross-platform code.
DefaultGLCapabilitiesChooser
public DefaultGLCapabilitiesChooser()
chooseCapabilities
public int chooseCapabilities(CapabilitiesImmutable desired,
List available,
int windowSystemRecommendedChoice)
- Specified by:
chooseCapabilities
in interface CapabilitiesChooser
Copyright 2010 JogAmp Community.