graphics/java/android/renderscript/RenderScript.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2008 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package android.renderscript;

 import java.lang.reflect.Field;

 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.util.Config;
 import android.util.Log;
 import android.view.Surface;


 /**
  * @hide
  *
  **/
 public class RenderScript {
     static final String LOG_TAG = "RenderScript_jni";
     private static final boolean DEBUG  = false;
     @SuppressWarnings({"UnusedDeclaration", "deprecation"})
     private static final boolean LOG_ENABLED = DEBUG ? Config.LOGD : Config.LOGV;
     int mWidth;
     int mHeight;


      /*
      * We use a class initializer to allow the native code to cache some
      * field offsets.
      */
     @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"})
     private static boolean sInitialized;
     native private static void _nInit();


     static {
         sInitialized = false;
         try {
             System.loadLibrary("rs_jni");
             _nInit();
             sInitialized = true;
         } catch (UnsatisfiedLinkError e) {
             Log.d(LOG_TAG, "RenderScript JNI library not found!");
         }
     }

     native void nInitElements(int a8, int rgba4444, int rgba8888, int rgb565);

     native int  nDeviceCreate();
     native void nDeviceDestroy(int dev);
     native void nDeviceSetConfig(int dev, int param, int value);
     native int  nContextCreate(int dev, int ver, boolean useDepth);
     native void nContextDestroy(int con);
     native void nContextSetSurface(int w, int h, Surface sur);
     native void nContextSetPriority(int p);
     native void nContextDump(int bits);

     native void nContextBindRootScript(int script);
     native void nContextBindSampler(int sampler, int slot);
     native void nContextBindProgramFragmentStore(int pfs);
     native void nContextBindProgramFragment(int pf);
     native void nContextBindProgramVertex(int pf);
     native void nContextBindProgramRaster(int pr);
     native void nContextPause();
     native void nContextResume();
     native int nContextGetMessage(int[] data, boolean wait);
     native void nContextInitToClient();
     native void nContextDeinitToClient();

     native void nAssignName(int obj, byte[] name);
     native void nObjDestroy(int id);
     native void nObjDestroyOOB(int id);
     native int  nFileOpen(byte[] name);


     native int  nElementCreate(int type, int kind, boolean norm, int vecSize);
     native int  nElementCreate2(int[] elements, String[] names);

     native void nTypeBegin(int elementID);
     native void nTypeAdd(int dim, int val);
     native int  nTypeCreate();
     native void nTypeFinalDestroy(Type t);
     native void nTypeSetupFields(Type t, int[] types, int[] bits, Field[] IDs);

     native int  nAllocationCreateTyped(int type);
     native int  nAllocationCreateFromBitmap(int dstFmt, boolean genMips, Bitmap bmp);
     native int  nAllocationCreateFromBitmapBoxed(int dstFmt, boolean genMips, Bitmap bmp);
     native int  nAllocationCreateFromAssetStream(int dstFmt, boolean genMips, int assetStream);

     native void nAllocationUploadToTexture(int alloc, int baseMioLevel);
     native void nAllocationUploadToBufferObject(int alloc);

     native void nAllocationSubData1D(int id, int off, int count, int[] d, int sizeBytes);
     native void nAllocationSubData1D(int id, int off, int count, short[] d, int sizeBytes);
     native void nAllocationSubData1D(int id, int off, int count, byte[] d, int sizeBytes);
     native void nAllocationSubData1D(int id, int off, int count, float[] d, int sizeBytes);

     native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, int[] d, int sizeBytes);
     native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, float[] d, int sizeBytes);
     native void nAllocationRead(int id, int[] d);
     native void nAllocationRead(int id, float[] d);
     native void nAllocationSubDataFromObject(int id, Type t, int offset, Object o);
     native void nAllocationSubReadFromObject(int id, Type t, int offset, Object o);

     native void nAdapter1DBindAllocation(int ad, int alloc);
     native void nAdapter1DSetConstraint(int ad, int dim, int value);
     native void nAdapter1DData(int ad, int[] d);
     native void nAdapter1DData(int ad, float[] d);
     native void nAdapter1DSubData(int ad, int off, int count, int[] d);
     native void nAdapter1DSubData(int ad, int off, int count, float[] d);
     native int  nAdapter1DCreate();

     native void nAdapter2DBindAllocation(int ad, int alloc);
     native void nAdapter2DSetConstraint(int ad, int dim, int value);
     native void nAdapter2DData(int ad, int[] d);
     native void nAdapter2DData(int ad, float[] d);
     native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, int[] d);
     native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, float[] d);
     native int  nAdapter2DCreate();

     native void nScriptBindAllocation(int script, int alloc, int slot);
     native void nScriptSetClearColor(int script, float r, float g, float b, float a);
     native void nScriptSetClearDepth(int script, float depth);
     native void nScriptSetClearStencil(int script, int stencil);
     native void nScriptSetTimeZone(int script, byte[] timeZone);
     native void nScriptSetType(int type, boolean writable, String name, int slot);
     native void nScriptSetRoot(boolean isRoot);
     native void nScriptSetInvokable(String name, int slot);
     native void nScriptInvoke(int id, int slot);

     native void nScriptCBegin();
     native void nScriptCSetScript(byte[] script, int offset, int length);
     native int  nScriptCCreate();
     native void nScriptCAddDefineI32(String name, int value);
     native void nScriptCAddDefineF(String name, float value);

     native void nSamplerBegin();
     native void nSamplerSet(int param, int value);
     native int  nSamplerCreate();

     native void nProgramFragmentStoreBegin(int in, int out);
     native void nProgramFragmentStoreDepthFunc(int func);
     native void nProgramFragmentStoreDepthMask(boolean enable);
     native void nProgramFragmentStoreColorMask(boolean r, boolean g, boolean b, boolean a);
     native void nProgramFragmentStoreBlendFunc(int src, int dst);
     native void nProgramFragmentStoreDither(boolean enable);
     native int  nProgramFragmentStoreCreate();

     native int  nProgramRasterCreate(int in, int out, boolean pointSmooth, boolean lineSmooth, boolean pointSprite);
     native void nProgramRasterSetLineWidth(int pr, float v);
     native void nProgramRasterSetPointSize(int pr, float v);

     native void nProgramBindConstants(int pv, int slot, int mID);
     native void nProgramBindTexture(int vpf, int slot, int a);
     native void nProgramBindSampler(int vpf, int slot, int s);

     native int  nProgramFragmentCreate(int[] params);
     native int  nProgramFragmentCreate2(String shader, int[] params);

     native int  nProgramVertexCreate(boolean texMat);
     native int  nProgramVertexCreate2(String shader, int[] params);

     native void nLightBegin();
     native void nLightSetIsMono(boolean isMono);
     native void nLightSetIsLocal(boolean isLocal);
     native int  nLightCreate();
     native void nLightSetColor(int l, float r, float g, float b);
     native void nLightSetPosition(int l, float x, float y, float z);

     native int  nSimpleMeshCreate(int batchID, int idxID, int[] vtxID, int prim);
     native void nSimpleMeshBindVertex(int id, int alloc, int slot);
     native void nSimpleMeshBindIndex(int id, int alloc);

     native void nAnimationBegin(int attribCount, int keyframeCount);
     native void nAnimationAdd(float time, float[] attribs);
     native int  nAnimationCreate();

     private int     mDev;
     private int     mContext;
     @SuppressWarnings({"FieldCanBeLocal"})
     private Surface mSurface;
     private MessageThread mMessageThread;

     Element mElement_USER_U8;
     Element mElement_USER_I8;
     Element mElement_USER_U16;
     Element mElement_USER_I16;
     Element mElement_USER_U32;
     Element mElement_USER_I32;
     Element mElement_USER_F32;

     Element mElement_A_8;
     Element mElement_RGB_565;
     Element mElement_RGB_888;
     Element mElement_RGBA_5551;
     Element mElement_RGBA_4444;
     Element mElement_RGBA_8888;

     Element mElement_INDEX_16;
     Element mElement_POSITION_2;
     Element mElement_POSITION_3;
     Element mElement_TEXTURE_2;
     Element mElement_NORMAL_3;
     Element mElement_COLOR_U8_4;
     Element mElement_COLOR_F32_4;

     ///////////////////////////////////////////////////////////////////////////////////
     //

     public static class RSMessage implements Runnable {
         protected int[] mData;
         protected int mID;
         public void run() {
         }
     }
     public RSMessage mMessageCallback = null;

     public enum Priority {
         LOW (5),     //ANDROID_PRIORITY_BACKGROUND + 5
         NORMAL (-4);  //ANDROID_PRIORITY_DISPLAY

         int mID;
         Priority(int id) {
             mID = id;
         }
     }

     void validate() {
         if (mContext == 0) {
             throw new IllegalStateException("Calling RS with no Context active.");
         }
     }

     void validateSurface() {
         //if (mSurface == null) {
             //throw new IllegalStateException("Uploading data to GL with no surface.");
         //}
     }

     public void contextSetPriority(Priority p) {
         nContextSetPriority(p.mID);
     }

     private static class MessageThread extends Thread {
         RenderScript mRS;
         boolean mRun = true;

         MessageThread(RenderScript rs) {
             super("RSMessageThread");
             mRS = rs;

         }

         public void run() {
             // This function is a temporary solution.  The final solution will
             // used typed allocations where the message id is the type indicator.
             int[] rbuf = new int[16];
             mRS.nContextInitToClient();
             while(mRun) {
                 int msg = mRS.nContextGetMessage(rbuf, true);
                 if (msg == 0) {
                     // Should only happen during teardown.
                     // But we want to avoid starving other threads during
                     // teardown by yielding until the next line in the destructor
                     // can execute to set mRun = false
                     try {
                         sleep(1, 0);
                     } catch(InterruptedException e) {
                     }
                 }
                 if(mRS.mMessageCallback != null) {
                     mRS.mMessageCallback.mData = rbuf;
                     mRS.mMessageCallback.mID = msg;
                     mRS.mMessageCallback.run();
                 }
                 //Log.d(LOG_TAG, "MessageThread msg " + msg + " v1 " + rbuf[0] + " v2 " + rbuf[1] + " v3 " +rbuf[2]);
             }
             Log.d(LOG_TAG, "MessageThread exiting.");
         }
     }

     public RenderScript(boolean useDepth, boolean forceSW) {
         mSurface = null;
         mWidth = 0;
         mHeight = 0;
         mDev = nDeviceCreate();
         if(forceSW) {
             nDeviceSetConfig(mDev, 0, 1);
         }
         mContext = nContextCreate(mDev, 0, useDepth);
         mMessageThread = new MessageThread(this);
         mMessageThread.start();
         Element.initPredefined(this);
     }

     public void contextSetSurface(int w, int h, Surface sur) {
         mSurface = sur;
         mWidth = w;
         mHeight = h;
         nContextSetSurface(w, h, mSurface);
     }

     public void contextDump(int bits) {
         nContextDump(bits);
     }

     public void destroy() {
         nContextDeinitToClient();
         mMessageThread.mRun = false;

         nContextDestroy(mContext);
         mContext = 0;

         nDeviceDestroy(mDev);
         mDev = 0;
     }

     boolean isAlive() {
         return mContext != 0;
     }

     void pause() {
         nContextPause();
     }

     void resume() {
         nContextResume();
     }

     //////////////////////////////////////////////////////////////////////////////////
     // File

     public class File extends BaseObj {
         File(int id) {
             super(RenderScript.this);
             mID = id;
         }
     }

     public File fileOpen(String s) throws IllegalStateException, IllegalArgumentException
     {
         if(s.length() < 1) {
             throw new IllegalArgumentException("fileOpen does not accept a zero length string.");
         }

         try {
             byte[] bytes = s.getBytes("UTF-8");
             int id = nFileOpen(bytes);
             return new File(id);
         } catch (java.io.UnsupportedEncodingException e) {
             throw new RuntimeException(e);
         }
     }


     ///////////////////////////////////////////////////////////////////////////////////
     // Root state

     private int safeID(BaseObj o) {
         if(o != null) {
             return o.mID;
         }
         return 0;
     }

     public void contextBindRootScript(Script s) {
         nContextBindRootScript(safeID(s));
     }

     public void contextBindProgramFragmentStore(ProgramStore p) {
         nContextBindProgramFragmentStore(safeID(p));
     }

     public void contextBindProgramFragment(ProgramFragment p) {
         nContextBindProgramFragment(safeID(p));
     }

     public void contextBindProgramRaster(ProgramRaster p) {
         nContextBindProgramRaster(safeID(p));
     }

     public void contextBindProgramVertex(ProgramVertex p) {
         nContextBindProgramVertex(safeID(p));
     }

 }
	/*
	* Copyright (C) 2008 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package android.renderscript;

	import java.lang.reflect.Field;

	import android.graphics.Bitmap;
	import android.graphics.BitmapFactory;
	import android.util.Config;
	import android.util.Log;
	import android.view.Surface;


	/**
	* @hide
	*
	**/
	public class RenderScript {
	static final String LOG_TAG = "RenderScript_jni";
	private static final boolean DEBUG = false;
	@SuppressWarnings({"UnusedDeclaration", "deprecation"})
	private static final boolean LOG_ENABLED = DEBUG ? Config.LOGD : Config.LOGV;
	int mWidth;
	int mHeight;



	/*
	* We use a class initializer to allow the native code to cache some
	* field offsets.
	*/
	@SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"})
	private static boolean sInitialized;
	native private static void _nInit();


	static {
	sInitialized = false;
	try {
	System.loadLibrary("rs_jni");
	_nInit();
	sInitialized = true;
	} catch (UnsatisfiedLinkError e) {
	Log.d(LOG_TAG, "RenderScript JNI library not found!");
	}
	}

	native void nInitElements(int a8, int rgba4444, int rgba8888, int rgb565);

	native int nDeviceCreate();
	native void nDeviceDestroy(int dev);
	native void nDeviceSetConfig(int dev, int param, int value);
	native int nContextCreate(int dev, int ver, boolean useDepth);
	native void nContextDestroy(int con);
	native void nContextSetSurface(int w, int h, Surface sur);
	native void nContextSetPriority(int p);
	native void nContextDump(int bits);

	native void nContextBindRootScript(int script);
	native void nContextBindSampler(int sampler, int slot);
	native void nContextBindProgramFragmentStore(int pfs);
	native void nContextBindProgramFragment(int pf);
	native void nContextBindProgramVertex(int pf);
	native void nContextBindProgramRaster(int pr);
	native void nContextPause();
	native void nContextResume();
	native int nContextGetMessage(int[] data, boolean wait);
	native void nContextInitToClient();
	native void nContextDeinitToClient();

	native void nAssignName(int obj, byte[] name);
	native void nObjDestroy(int id);
	native void nObjDestroyOOB(int id);
	native int nFileOpen(byte[] name);


	native int nElementCreate(int type, int kind, boolean norm, int vecSize);
	native int nElementCreate2(int[] elements, String[] names);

	native void nTypeBegin(int elementID);
	native void nTypeAdd(int dim, int val);
	native int nTypeCreate();
	native void nTypeFinalDestroy(Type t);
	native void nTypeSetupFields(Type t, int[] types, int[] bits, Field[] IDs);

	native int nAllocationCreateTyped(int type);
	native int nAllocationCreateFromBitmap(int dstFmt, boolean genMips, Bitmap bmp);
	native int nAllocationCreateFromBitmapBoxed(int dstFmt, boolean genMips, Bitmap bmp);
	native int nAllocationCreateFromAssetStream(int dstFmt, boolean genMips, int assetStream);

	native void nAllocationUploadToTexture(int alloc, int baseMioLevel);
	native void nAllocationUploadToBufferObject(int alloc);

	native void nAllocationSubData1D(int id, int off, int count, int[] d, int sizeBytes);
	native void nAllocationSubData1D(int id, int off, int count, short[] d, int sizeBytes);
	native void nAllocationSubData1D(int id, int off, int count, byte[] d, int sizeBytes);
	native void nAllocationSubData1D(int id, int off, int count, float[] d, int sizeBytes);

	native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, int[] d, int sizeBytes);
	native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, float[] d, int sizeBytes);
	native void nAllocationRead(int id, int[] d);
	native void nAllocationRead(int id, float[] d);
	native void nAllocationSubDataFromObject(int id, Type t, int offset, Object o);
	native void nAllocationSubReadFromObject(int id, Type t, int offset, Object o);

	native void nAdapter1DBindAllocation(int ad, int alloc);
	native void nAdapter1DSetConstraint(int ad, int dim, int value);
	native void nAdapter1DData(int ad, int[] d);
	native void nAdapter1DData(int ad, float[] d);
	native void nAdapter1DSubData(int ad, int off, int count, int[] d);
	native void nAdapter1DSubData(int ad, int off, int count, float[] d);
	native int nAdapter1DCreate();

	native void nAdapter2DBindAllocation(int ad, int alloc);
	native void nAdapter2DSetConstraint(int ad, int dim, int value);
	native void nAdapter2DData(int ad, int[] d);
	native void nAdapter2DData(int ad, float[] d);
	native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, int[] d);
	native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, float[] d);
	native int nAdapter2DCreate();

	native void nScriptBindAllocation(int script, int alloc, int slot);
	native void nScriptSetClearColor(int script, float r, float g, float b, float a);
	native void nScriptSetClearDepth(int script, float depth);
	native void nScriptSetClearStencil(int script, int stencil);
	native void nScriptSetTimeZone(int script, byte[] timeZone);
	native void nScriptSetType(int type, boolean writable, String name, int slot);
	native void nScriptSetRoot(boolean isRoot);
	native void nScriptSetInvokable(String name, int slot);
	native void nScriptInvoke(int id, int slot);

	native void nScriptCBegin();
	native void nScriptCSetScript(byte[] script, int offset, int length);
	native int nScriptCCreate();
	native void nScriptCAddDefineI32(String name, int value);
	native void nScriptCAddDefineF(String name, float value);

	native void nSamplerBegin();
	native void nSamplerSet(int param, int value);
	native int nSamplerCreate();

	native void nProgramFragmentStoreBegin(int in, int out);
	native void nProgramFragmentStoreDepthFunc(int func);
	native void nProgramFragmentStoreDepthMask(boolean enable);
	native void nProgramFragmentStoreColorMask(boolean r, boolean g, boolean b, boolean a);
	native void nProgramFragmentStoreBlendFunc(int src, int dst);
	native void nProgramFragmentStoreDither(boolean enable);
	native int nProgramFragmentStoreCreate();

	native int nProgramRasterCreate(int in, int out, boolean pointSmooth, boolean lineSmooth, boolean pointSprite);
	native void nProgramRasterSetLineWidth(int pr, float v);
	native void nProgramRasterSetPointSize(int pr, float v);

	native void nProgramBindConstants(int pv, int slot, int mID);
	native void nProgramBindTexture(int vpf, int slot, int a);
	native void nProgramBindSampler(int vpf, int slot, int s);

	native int nProgramFragmentCreate(int[] params);
	native int nProgramFragmentCreate2(String shader, int[] params);

	native int nProgramVertexCreate(boolean texMat);
	native int nProgramVertexCreate2(String shader, int[] params);

	native void nLightBegin();
	native void nLightSetIsMono(boolean isMono);
	native void nLightSetIsLocal(boolean isLocal);
	native int nLightCreate();
	native void nLightSetColor(int l, float r, float g, float b);
	native void nLightSetPosition(int l, float x, float y, float z);

	native int nSimpleMeshCreate(int batchID, int idxID, int[] vtxID, int prim);
	native void nSimpleMeshBindVertex(int id, int alloc, int slot);
	native void nSimpleMeshBindIndex(int id, int alloc);

	native void nAnimationBegin(int attribCount, int keyframeCount);
	native void nAnimationAdd(float time, float[] attribs);
	native int nAnimationCreate();

	private int mDev;
	private int mContext;
	@SuppressWarnings({"FieldCanBeLocal"})
	private Surface mSurface;
	private MessageThread mMessageThread;

	Element mElement_USER_U8;
	Element mElement_USER_I8;
	Element mElement_USER_U16;
	Element mElement_USER_I16;
	Element mElement_USER_U32;
	Element mElement_USER_I32;
	Element mElement_USER_F32;

	Element mElement_A_8;
	Element mElement_RGB_565;
	Element mElement_RGB_888;
	Element mElement_RGBA_5551;
	Element mElement_RGBA_4444;
	Element mElement_RGBA_8888;

	Element mElement_INDEX_16;
	Element mElement_POSITION_2;
	Element mElement_POSITION_3;
	Element mElement_TEXTURE_2;
	Element mElement_NORMAL_3;
	Element mElement_COLOR_U8_4;
	Element mElement_COLOR_F32_4;

	///////////////////////////////////////////////////////////////////////////////////
	//

	public static class RSMessage implements Runnable {
	protected int[] mData;
	protected int mID;
	public void run() {
	}
	}
	public RSMessage mMessageCallback = null;

	public enum Priority {
	LOW (5), //ANDROID_PRIORITY_BACKGROUND + 5
	NORMAL (-4); //ANDROID_PRIORITY_DISPLAY

	int mID;
	Priority(int id) {
	mID = id;
	}
	}

	void validate() {
	if (mContext == 0) {
	throw new IllegalStateException("Calling RS with no Context active.");
	}
	}

	void validateSurface() {
	//if (mSurface == null) {
	//throw new IllegalStateException("Uploading data to GL with no surface.");
	//}
	}

	public void contextSetPriority(Priority p) {
	nContextSetPriority(p.mID);
	}

	private static class MessageThread extends Thread {
	RenderScript mRS;
	boolean mRun = true;

	MessageThread(RenderScript rs) {
	super("RSMessageThread");
	mRS = rs;

	}

	public void run() {
	// This function is a temporary solution. The final solution will
	// used typed allocations where the message id is the type indicator.
	int[] rbuf = new int[16];
	mRS.nContextInitToClient();
	while(mRun) {
	int msg = mRS.nContextGetMessage(rbuf, true);
	if (msg == 0) {
	// Should only happen during teardown.
	// But we want to avoid starving other threads during
	// teardown by yielding until the next line in the destructor
	// can execute to set mRun = false
	try {
	sleep(1, 0);
	} catch(InterruptedException e) {
	}
	}
	if(mRS.mMessageCallback != null) {
	mRS.mMessageCallback.mData = rbuf;
	mRS.mMessageCallback.mID = msg;
	mRS.mMessageCallback.run();
	}
	//Log.d(LOG_TAG, "MessageThread msg " + msg + " v1 " + rbuf[0] + " v2 " + rbuf[1] + " v3 " +rbuf[2]);
	}
	Log.d(LOG_TAG, "MessageThread exiting.");
	}
	}

	public RenderScript(boolean useDepth, boolean forceSW) {
	mSurface = null;
	mWidth = 0;
	mHeight = 0;
	mDev = nDeviceCreate();
	if(forceSW) {
	nDeviceSetConfig(mDev, 0, 1);
	}
	mContext = nContextCreate(mDev, 0, useDepth);
	mMessageThread = new MessageThread(this);
	mMessageThread.start();
	Element.initPredefined(this);
	}

	public void contextSetSurface(int w, int h, Surface sur) {
	mSurface = sur;
	mWidth = w;
	mHeight = h;
	nContextSetSurface(w, h, mSurface);
	}

	public void contextDump(int bits) {
	nContextDump(bits);
	}

	public void destroy() {
	nContextDeinitToClient();
	mMessageThread.mRun = false;

	nContextDestroy(mContext);
	mContext = 0;

	nDeviceDestroy(mDev);
	mDev = 0;
	}

	boolean isAlive() {
	return mContext != 0;
	}

	void pause() {
	nContextPause();
	}

	void resume() {
	nContextResume();
	}

	//////////////////////////////////////////////////////////////////////////////////
	// File

	public class File extends BaseObj {
	File(int id) {
	super(RenderScript.this);
	mID = id;
	}
	}

	public File fileOpen(String s) throws IllegalStateException, IllegalArgumentException
	{
	if(s.length() < 1) {
	throw new IllegalArgumentException("fileOpen does not accept a zero length string.");
	}

	try {
	byte[] bytes = s.getBytes("UTF-8");
	int id = nFileOpen(bytes);
	return new File(id);
	} catch (java.io.UnsupportedEncodingException e) {
	throw new RuntimeException(e);
	}
	}


	///////////////////////////////////////////////////////////////////////////////////
	// Root state

	private int safeID(BaseObj o) {
	if(o != null) {
	return o.mID;
	}
	return 0;
	}

	public void contextBindRootScript(Script s) {
	nContextBindRootScript(safeID(s));
	}

	public void contextBindProgramFragmentStore(ProgramStore p) {
	nContextBindProgramFragmentStore(safeID(p));
	}

	public void contextBindProgramFragment(ProgramFragment p) {
	nContextBindProgramFragment(safeID(p));
	}

	public void contextBindProgramRaster(ProgramRaster p) {
	nContextBindProgramRaster(safeID(p));
	}

	public void contextBindProgramVertex(ProgramVertex p) {
	nContextBindProgramVertex(safeID(p));
	}

	}