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 2c09035..fce4228 100644 (file)
--- 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 {
 \r
                return textureRegion;\r
        }\r
+       \r
+       public static Pixmap getFrameBufferPixmap(int x, int y, int w, int h) {\r
+               Gdx.gl.glPixelStorei(GL10.GL_PACK_ALIGNMENT, 1);\r
+\r
+               final Pixmap pixmap = new Pixmap(w, h, Format.RGBA8888);\r
+               ByteBuffer pixels = pixmap.getPixels();\r
+               byte[] bytes = getFrameBufferPixels(true);\r
+               pixels.put(bytes);\r
+               pixels.flip();\r
+\r
+               return pixmap;\r
+       }\r
 \r
        /** Returns the default framebuffer contents as a byte[] array with a length equal to screen width * height * 4. The byte[] will\r
         * always contain RGBA8888 data. Because of differences in screen and image origins the framebuffer contents should be flipped\r

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 (file)
index 0000000..f03bebb
--- /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);
+       }
+}