[Java-game-lib-cvs] SF.net SVN: java-game-lib:[3456] trunk/LWJGL

[<ma...@us...>]

Revision: 3456
          http://java-game-lib.svn.sourceforge.net/java-game-lib/?rev=3456&view=rev
Author:   matzon
Date:     2010-11-24 21:48:23 +0000 (Wed, 24 Nov 2010)

Log Message:
-----------
adding support for zeroing buffers - patch'ish by MatthiasM

Modified Paths:
--------------
    trunk/LWJGL/build.xml
    trunk/LWJGL/src/java/org/lwjgl/BufferUtils.java

Added Paths:
-----------
    trunk/LWJGL/src/native/common/org_lwjgl_BufferUtils.c

Modified: trunk/LWJGL/build.xml
===================================================================
--- trunk/LWJGL/build.xml	2010-11-11 21:25:20 UTC (rev 3455)
+++ trunk/LWJGL/build.xml	2010-11-24 21:48:23 UTC (rev 3456)
@@ -266,6 +266,7 @@
 			<class name="org.lwjgl.opengl.CallbackUtil" />
             <class name="org.lwjgl.opencl.CL" />
             <class name="org.lwjgl.opencl.CallbackUtil" />
+      <class name="org.lwjgl.BufferUtils" />
 		</javah>
 	</target>
 

Modified: trunk/LWJGL/src/java/org/lwjgl/BufferUtils.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/BufferUtils.java	2010-11-11 21:25:20 UTC (rev 3455)
+++ trunk/LWJGL/src/java/org/lwjgl/BufferUtils.java	2010-11-24 21:48:23 UTC (rev 3456)
@@ -155,4 +155,41 @@
 		return buffer.position() << getElementSizeExponent(buffer);
 	}
 
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(ByteBuffer b) {
+	    zeroBuffer0(b, b.position(), b.remaining());
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(ShortBuffer b) {
+	    zeroBuffer0(b, b.position()*2L, b.remaining()*2L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(CharBuffer b) {
+	    zeroBuffer0(b, b.position()*2L, b.remaining()*2L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(IntBuffer b) {
+	    zeroBuffer0(b, b.position()*4L, b.remaining()*4L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(FloatBuffer b) {
+	    zeroBuffer0(b, b.position()*4L, b.remaining()*4L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(LongBuffer b) {
+	    zeroBuffer0(b, b.position()*8L, b.remaining()*8L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	public static void zeroBuffer(DoubleBuffer b) {
+	    zeroBuffer0(b, b.position()*8L, b.remaining()*8L);
+	}
+
+	/** Fill buffer with zeros from position to remaining */
+	private static native void zeroBuffer0(Buffer b, long off, long size);
 }

Added: trunk/LWJGL/src/native/common/org_lwjgl_BufferUtils.c
===================================================================
--- trunk/LWJGL/src/native/common/org_lwjgl_BufferUtils.c	                        (rev 0)
+++ trunk/LWJGL/src/native/common/org_lwjgl_BufferUtils.c	2010-11-24 21:48:23 UTC (rev 3456)
@@ -0,0 +1,5 @@
+#include "org_lwjgl_BufferUtils.h"
+
+JNIEXPORT void JNICALL Java_org_lwjgl_BufferUtils_zeroBuffer0(JNIEnv *env, jclass clazz, jobject buffer, jlong offset, jlong size) {
+	memset((char*)(*env)->GetDirectBufferAddress(env, buffer) + (size_t)offset, 0, (size_t)size);
+}
\ No newline at end of file


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