What Does It Mean To Get Raster DataBuffer
Aug 14, 2014
I've been trying to practice some active rendering involving triple buffering and manipulating a BufferedImage's raster. however, as I was watching some videos and reading articles, I noticed programers using this method invocation hierarchy to get the raster's pixels
((DataBufferInt) BufferedImage.getRaster().getDataBuffer()).getData()
I know what does the method getRaster() return, but I'm confused about the other ones especially the getDataBuffer(). What is a data buffer exactly, and what is happening when invoking those methods?
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Feb 9, 2014
I've been working my way through a tutorial to build a simple 2D tile-based engine that also allows the code to manipulate the colour of pixels on the screen based on a monochrome map read from a file. I've got the code right line for line, but I seem to have a bug when it comes to draw to the screen! At regular intervals, despite what is held in the pixel array of ints (which I have confirmed to be correct when debugging), I get the same row of pixels being draw twice in a row. I figured there was some loop issue somewhere, but after attempting to debug this for some time, I haven't come up with the answer.
Original tilesheet:As rendered:
Game.java:
package igg.engine.game;
import igg.engine.game.gfx.Screen;
import igg.engine.game.gfx.SpriteSheet;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
[Code] ....
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