From: badlogic <badlogicgames@gmail.com>
Date: Sun, 6 Oct 2013 14:35:32 +0000 (+0200)
Subject: added new method to ScreenUtils to get a pixmap, not the fastest
X-Git-Url: http://git.osdn.net/view?p=mikumikustudio%2Flibgdx-mikumikustudio.git;a=commitdiff_plain;h=1f5d9e98f65e9b91656bf1f0010f61de76b2eb31

added new method to ScreenUtils to get a pixmap, not the fastest
---

diff --git a/gdx/src/com/badlogic/gdx/utils/ScreenUtils.java b/gdx/src/com/badlogic/gdx/utils/ScreenUtils.java
index 2c09035a5..fce422855 100644
--- a/gdx/src/com/badlogic/gdx/utils/ScreenUtils.java
+++ b/gdx/src/com/badlogic/gdx/utils/ScreenUtils.java
@@ -67,6 +67,18 @@ public class ScreenUtils {
 
 		return textureRegion;
 	}
+	
+	public static Pixmap getFrameBufferPixmap(int x, int y, int w, int h) {
+		Gdx.gl.glPixelStorei(GL10.GL_PACK_ALIGNMENT, 1);
+
+		final Pixmap pixmap = new Pixmap(w, h, Format.RGBA8888);
+		ByteBuffer pixels = pixmap.getPixels();
+		byte[] bytes = getFrameBufferPixels(true);
+		pixels.put(bytes);
+		pixels.flip();
+
+		return pixmap;
+	}
 
 	/** Returns the default framebuffer contents as a byte[] array with a length equal to screen width * height * 4. The byte[] will
 	 * always contain RGBA8888 data. Because of differences in screen and image origins the framebuffer contents should be flipped
diff --git a/tests/gdx-tests-lwjgl/src/com/badlogic/gdx/tests/lwjgl/Test2.java b/tests/gdx-tests-lwjgl/src/com/badlogic/gdx/tests/lwjgl/Test2.java
new file mode 100644
index 000000000..f03bebbb5
--- /dev/null
+++ b/tests/gdx-tests-lwjgl/src/com/badlogic/gdx/tests/lwjgl/Test2.java
@@ -0,0 +1,58 @@
+
+package com.badlogic.gdx.tests.lwjgl;
+
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.graphics.GL10;
+import com.badlogic.gdx.graphics.Pixmap;
+import com.badlogic.gdx.graphics.Pixmap.Format;
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.graphics.g2d.TextureRegion;
+import com.badlogic.gdx.utils.ScreenUtils;
+
+public class Test2 extends ApplicationAdapter {
+	SpriteBatch batch;
+	TextureRegion region;
+	Pixmap screenCap;
+	Texture screenCapTex;
+
+	public void create () {
+		int size =1;
+
+		batch = new SpriteBatch();
+		Pixmap p = new Pixmap(64, 64, Format.RGBA8888);
+		p.setColor(Color.RED);
+		p.fillRectangle(32, 32, size, size);
+		region = new TextureRegion(new Texture(p), 32, 32, size, size);
+
+		Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
+		Gdx.gl.glClearColor(0, 0, 0, 1);
+		batch.begin();
+		batch.draw(region, 1, 1, 256, 256);
+		batch.end();
+		screenCap = ScreenUtils.getFrameBufferPixmap(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
+		screenCapTex = new Texture(screenCap);
+		System.out.println(screenCap.getPixel(0, 0));
+		System.out.println(screenCap.getPixel(1, 1));
+		System.out.println(screenCap.getPixel(256, 256));
+		System.out.println(screenCap.getPixel(257, 257));
+	}
+
+	public void render () {
+		Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
+		Gdx.gl.glClearColor(0, 0, 0, 1);
+		batch.begin();
+		batch.draw(screenCapTex, 0, 0);
+		batch.end();
+	}
+
+	public static void main (String[] args) {
+		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+		config.useGL20 = true;
+		new LwjglApplication(new Test2(), config);
+	}
+}