Attachment 620 Details for Bug 1044 – Stand-alone test to create an image using off-screen buffer

Stand-alone test to create an image using off-screen buffer

TestOffScreen.java (text/x-java), 1.68 KB, created by Mario Pascucci on 2014-08-12 10:26:10 CEST

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Creator: Mario Pascucci

Created: 2014-08-12 10:26:10 CEST

Size: 1.68 KB

patch

obsolete

>
>
>package jogltest;
>
>import java.awt.image.BufferedImage;
>import java.io.File;
>import java.io.IOException;
>
>import javax.imageio.ImageIO;
>import javax.media.opengl.GL2;
>import javax.media.opengl.GLCapabilities;
>import javax.media.opengl.GLContext;
>import javax.media.opengl.GLDrawableFactory;
>import javax.media.opengl.GLOffscreenAutoDrawable;
>import javax.media.opengl.GLProfile;
>
>import com.jogamp.opengl.util.awt.AWTGLReadBufferUtil;
>
>public class TestOffScreen {
>
>	public static void main(String[] args) {
>
>		GL2 gl2;
>		
>		GLDrawableFactory fac = GLDrawableFactory.getFactory(GLProfile.getDefault());
>		GLCapabilities glCap = new GLCapabilities(GLProfile.getDefault());
>		// Without line below, there is an error on Windows.
>		glCap.setDoubleBuffered(false);
>		//makes a new buffer 100x100
>		GLOffscreenAutoDrawable buf = fac.createOffscreenAutoDrawable(null, glCap, null, 100, 100);
>		GLContext context =  buf.createContext(null); 
>		context.makeCurrent();
>		gl2 = context.getGL().getGL2();
>		gl2.glViewport(0, 0, 100, 100);
>		gl2.glShadeModel(GL2.GL_SMOOTH);
>		gl2.glClearColor(1.0f, 0.80f, 0.80f, 1);    // This Will Clear The Background Color
>		gl2.glClearDepth(1.0);                    // Enables Clearing Of The Depth Buffer
>		gl2.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
>		gl2.glLoadIdentity();                    // Reset The Projection Matrix
>		AWTGLReadBufferUtil agb = new AWTGLReadBufferUtil(buf.getGLProfile(), true);
>		BufferedImage image = agb.readPixelsToBufferedImage(context.getGL(), true);
>		try {
>			ImageIO.write(image, "PNG", new File("test.png"));
>		} catch (IOException e) {
>			e.printStackTrace();
>		}
>		context.destroy();
>		buf.destroy();
>		System.out.println("Done!");
>	}
>
>}

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Attachments on bug 1044: 620