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authorKenneth Russel <[email protected]>2007-01-04 07:20:30 +0000
committerKenneth Russel <[email protected]>2007-01-04 07:20:30 +0000
commit793d14340862fcafc6508a560ec398d81ca76e72 (patch)
treef4fda33e5ac0f2274e7af23d1b8aaad92e89ae84 /src/demos/j2d/TestOverlay.java
parentd1b458f248e476ff70b3378e4b4e7ea620ca0c75 (diff)
With extensive help from Phil Race and Chris Campbell from the Java 2D
team, added a TextRenderer class which enables high-performance rendering of bitmapped Java 2D fonts, with full Unicode support, into arbitrary OpenGL drawables using a simple API. Builds on top of the TextureRenderer class and its associated functionality; added createAlphaOnlyRenderer() and other methods to enable the TextRenderer. Caches rendering results on a string-by-string basis in an OpenGL texture using a fully automatic least-recently-used algorithm for good efficiency when rendering the same string or strings multiple times. Uses a rectangle packing algorithm, currently housed in com.sun.opengl.impl.packrect, for managing the positions of cached strings on a larger OpenGL texture to avoid OpenGL pipeline state changes. Added a TestTextRenderer demo which simply adds a moving text string and frames-per-second counter to the Gears demo; more sophisticated examples to come. (Some commented-out debugging code is being temporarily left in the new demo, to be removed in the next checkin, in order to have it in the version history.) git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@196 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4
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