[added] Graphics.hasExtensions() to check for GL extensions.

Ncl8 · Jul 7, 2011 · ab1bd3f · ab1bd3f
1 parent 9133880
commit ab1bd3f
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diff --git a/backends/gdx-backend-android/src/com/badlogic/gdx/backends/android/AndroidGraphics.java b/backends/gdx-backend-android/src/com/badlogic/gdx/backends/android/AndroidGraphics.java
@@ -62,6 +62,7 @@ public final class AndroidGraphics implements Graphics, Renderer {
 	GL11 gl11;
 	GL20 gl20;
 	GLU glu;
+	String extensions;
 
 	private long lastFrameTime = System.nanoTime();
 	private float deltaTime = 0;
@@ -544,4 +545,9 @@ protected AndroidDisplayMode (int width, int height, int refreshRate, int bitsPe
 
 	@Override public void setVSync (boolean vsync) {
 	}
+
+	@Override public boolean hasExtension (String extension) {
+		if(extensions == null) extensions = Gdx.gl.glGetString(GL10.GL_EXTENSIONS);
+		return extensions.contains(extension);
+	}
 }
diff --git a/backends/gdx-backend-jogl/src/com/badlogic/gdx/backends/jogl/JoglGraphics.java b/backends/gdx-backend-jogl/src/com/badlogic/gdx/backends/jogl/JoglGraphics.java
@@ -36,6 +36,7 @@
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Graphics;
 import com.badlogic.gdx.backends.openal.OpenALAudio;
+import com.badlogic.gdx.graphics.GL10;
 import com.badlogic.gdx.graphics.Pixmap;
 import com.badlogic.gdx.utils.GdxRuntimeException;
 
@@ -52,6 +53,7 @@ public class JoglGraphics extends JoglGraphicsBase implements GLEventListener {
 	boolean exclusiveMode = false;
 	final JoglDisplayMode desktopMode;
 	final JoglApplicationConfiguration config; 
+	String extensions;
 
 	public JoglGraphics (ApplicationListener listener, JoglApplicationConfiguration config) {
 		initialize(config);
@@ -329,4 +331,9 @@ protected static JFrame findJFrame(Component component) {
 		GLCapabilities caps = canvas.getChosenGLCapabilities();
 		return new BufferFormat(caps.getRedBits(), caps.getGreenBits(), caps.getBlueBits(), caps.getAlphaBits(), caps.getDepthBits(), caps.getStencilBits(), caps.getNumSamples(), false);		
 	}
+
+	@Override public boolean hasExtension (String extension) {
+		if(extensions == null) extensions = Gdx.gl.glGetString(GL10.GL_EXTENSIONS);
+		return extensions.contains(extension);
+	}
 }
diff --git a/backends/gdx-backend-lwjgl/src/com/badlogic/gdx/backends/lwjgl/LwjglApplication.java b/backends/gdx-backend-lwjgl/src/com/badlogic/gdx/backends/lwjgl/LwjglApplication.java
@@ -23,6 +23,7 @@
 
 import org.lwjgl.LWJGLException;
 import org.lwjgl.opengl.Display;
+import org.lwjgl.opengl.GL11;
 
 import com.badlogic.gdx.Application;
 import com.badlogic.gdx.ApplicationListener;
@@ -33,6 +34,7 @@
 import com.badlogic.gdx.Input;
 import com.badlogic.gdx.Preferences;
 import com.badlogic.gdx.backends.openal.OpenALAudio;
+import com.badlogic.gdx.graphics.GL10;
 import com.badlogic.gdx.utils.GdxRuntimeException;
 
 /**
@@ -130,6 +132,8 @@ private void mainLoop () {
 		int lastWidth = graphics.getWidth();
 		int lastHeight = graphics.getHeight();
 
+		Gdx.app.log("LwjglApplication", "extension: " + Gdx.gl.glGetString(GL10.GL_EXTENSIONS));
+
 		graphics.lastTime = System.nanoTime();
 		while (running && !Display.isCloseRequested()) {
 			graphics.updateTime();

diff --git a/backends/gdx-backend-lwjgl/src/com/badlogic/gdx/backends/lwjgl/LwjglGraphics.java b/backends/gdx-backend-lwjgl/src/com/badlogic/gdx/backends/lwjgl/LwjglGraphics.java
@@ -55,6 +55,7 @@ public final class LwjglGraphics implements Graphics {
 	boolean resize = false;
 	LwjglApplicationConfiguration config;
 	BufferFormat bufferFormat = new BufferFormat(8, 8, 8, 8, 16, 8, 0, false);
+	String extensions;
 
 	LwjglGraphics (LwjglApplicationConfiguration config) {		
 		this.config = config;
@@ -359,4 +360,9 @@ public LwjglDisplayMode (int width, int height, int refreshRate, int bitsPerPixe
 		if(vsync && !config.useCPUSynch) Display.setVSyncEnabled(true);
 		if(!vsync && !config.useCPUSynch) Display.setVSyncEnabled(false);
 	}
+
+	@Override public boolean hasExtension (String extension) {
+		if(extensions == null) extensions = Gdx.gl.glGetString(GL10.GL_EXTENSIONS);
+		return extensions.contains(extension);
+	}
 }
diff --git a/backends/gdx-backends-angle/src/com/badlogic/gdx/backends/angle/AngleGraphics.java b/backends/gdx-backends-angle/src/com/badlogic/gdx/backends/angle/AngleGraphics.java
@@ -17,6 +17,7 @@
 
 import java.awt.Toolkit;
 
+import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Graphics;
 import com.badlogic.gdx.Graphics.DisplayMode;
 import com.badlogic.gdx.graphics.GL10;
@@ -36,6 +37,7 @@ public class AngleGraphics implements Graphics {
 	int fps;
 	int frames;
 	float deltaTime = 0;
+	String extensions;
 
 	AngleGraphics (int width, int height) {
 		gl = new AngleGLES20();
@@ -155,4 +157,9 @@ void updateTime () {
 	@Override public BufferFormat getBufferFormat () {
 		return null;
 	}
+
+	@Override public boolean hasExtension (String extension) {
+		if(extensions == null) extensions = Gdx.gl.glGetString(GL10.GL_EXTENSIONS);
+		return extensions.contains(extension);
+	}
 }
diff --git a/gdx/src/com/badlogic/gdx/Graphics.java b/gdx/src/com/badlogic/gdx/Graphics.java
@@ -274,6 +274,12 @@ public String toString() {
 	 */
 	public BufferFormat getBufferFormat();
 
+	/**
+	 * @param extension the extension name
+	 * @return whether the extension is supported
+	 */
+	public boolean hasExtension(String extension);
+
 //	/**
 //	 * Opens the first back facing video camera. Only one camera
 //	 * can be opened at any given time.