Added support for a new Drawable type (SharedDrawable) that shares its context with another Drawable.
Added new methods to the Drawable interface (makeCurrent, releaseContext, destroy). Added a background thread texture loading test (using either Pbuffer or SharedDrawable).
This commit is contained in:
Ioannis Tsakpinis
parent
8f784c424c
commit
e650319d5b
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@ -109,6 +109,16 @@ public class AWTGLCanvas extends Canvas implements Drawable, ComponentListener,
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return context;
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}
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public Context createSharedContext() throws LWJGLException {
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synchronized ( GlobalLock.lock ) {
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synchronized ( SYNC_LOCK ) {
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if ( context == null ) throw new IllegalStateException("Canvas not yet displayable");
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return new Context(peer_info, context.getContextAttribs(), context);
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}
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}
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}
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/** Constructor using the default PixelFormat. */
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public AWTGLCanvas() throws LWJGLException {
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this(new PixelFormat());
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@ -175,7 +185,7 @@ public class AWTGLCanvas extends Canvas implements Drawable, ComponentListener,
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*/
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public void removeNotify() {
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synchronized ( SYNC_LOCK ) {
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destroyContext();
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destroy();
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super.removeNotify();
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}
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}
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@ -225,7 +235,7 @@ public class AWTGLCanvas extends Canvas implements Drawable, ComponentListener,
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}
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/** Destroy the OpenGL context. This happens when the component becomes undisplayable */
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private void destroyContext() {
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public final void destroy() {
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synchronized ( SYNC_LOCK ) {
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try {
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if ( context != null ) {
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@ -61,7 +61,7 @@ final class Context {
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private final ByteBuffer handle;
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private final PeerInfo peer_info;
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private final IntBuffer attribList;
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private final ContextAttribs contextAttribs;
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private final boolean forwardCompatible;
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/** Whether the context has been destroyed */
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@ -94,6 +94,10 @@ final class Context {
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return peer_info;
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}
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ContextAttribs getContextAttribs() {
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return contextAttribs;
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}
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static Context getCurrentContext() {
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return (Context)current_context_local.get();
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}
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@ -109,6 +113,9 @@ final class Context {
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GLContext.loadOpenGLLibrary();
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try {
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this.peer_info = peer_info;
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this.contextAttribs = attribs;
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IntBuffer attribList;
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if ( attribs != null ) {
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attribList = attribs.getAttribList();
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forwardCompatible = attribs.isForwardCompatible();
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@ -143,6 +143,26 @@ public final class Display {
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return isCreated() ? context : null;
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}
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}
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public Context createSharedContext() throws LWJGLException {
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synchronized ( GlobalLock.lock ) {
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if ( !isCreated() ) throw new IllegalStateException("Display must be created.");
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return new Context(peer_info, context.getContextAttribs(), context);
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}
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}
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public void makeCurrent() throws LWJGLException {
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Display.makeCurrent();
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}
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public void releaseContext() throws LWJGLException {
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Display.releaseContext();
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}
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public void destroy() {
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Display.destroy();
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}
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};
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}
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@ -31,6 +31,8 @@
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*/
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package org.lwjgl.opengl;
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import org.lwjgl.LWJGLException;
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/**
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* The Drawable interface describes an OpenGL drawable with an associated
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* Context.
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@ -39,5 +41,38 @@ package org.lwjgl.opengl;
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*/
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public interface Drawable {
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/**
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* [INTERNAL USE ONLY] Returns the Drawable's Context.
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*
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* @return the Drawable's Context
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*/
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Context getContext();
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/**
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* [INTERNAL USE ONLY] Creates a new Context that is shared with the Drawable's Context.
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*
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* @return a Context shared with the Drawable's Context.
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*/
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Context createSharedContext() throws LWJGLException;
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/**
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* Makes the Drawable's context current in the current thread.
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*
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* @throws LWJGLException
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*/
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void makeCurrent() throws LWJGLException;
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/**
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* If the Drawable's context is current in the current thread, no context will be current after a call to this method.
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*
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* @throws LWJGLException
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*/
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void releaseContext() throws LWJGLException;
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/**
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* Destroys the Drawable.
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*/
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void destroy();
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}
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@ -255,6 +255,12 @@ public final class Pbuffer implements Drawable {
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return context;
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}
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public Context createSharedContext() throws LWJGLException {
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synchronized ( GlobalLock.lock ) {
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return new Context(peer_info, context.getContextAttribs(), context);
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}
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}
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private void checkDestroyed() {
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if (destroyed)
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throw new IllegalStateException("Pbuffer is destroyed");
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@ -281,6 +287,12 @@ public final class Pbuffer implements Drawable {
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context.makeCurrent();
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}
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public void releaseContext() throws LWJGLException {
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checkDestroyed();
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if ( context.isCurrent() )
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Context.releaseCurrentContext();
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}
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/**
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* Gets the Pbuffer capabilities.
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*
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@ -0,0 +1,96 @@
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/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opengl;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.LWJGLUtil;
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/**
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* @author Spasi
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* @since 20 Áðñ 2010
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*/
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/**
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* A Drawable implementation that shares its context with another Drawable. This is useful
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* for background loading of resources. See org.lwjgl.test.opengl.multithread.BackgroundLoad
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* for an example.
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*
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* @author Spasi
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*/
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public final class SharedDrawable implements Drawable {
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private Context context;
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private boolean destroyed;
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public SharedDrawable(final Drawable drawable) throws LWJGLException {
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this.context = drawable.createSharedContext();
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}
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public Context getContext() {
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return context;
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}
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public Context createSharedContext() {
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throw new UnsupportedOperationException();
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}
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public void makeCurrent() throws LWJGLException {
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checkDestroyed();
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context.makeCurrent();
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}
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public void releaseContext() throws LWJGLException {
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checkDestroyed();
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if ( context.isCurrent() )
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Context.releaseCurrentContext();
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}
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public void destroy() {
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if ( destroyed )
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return;
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try {
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context.forceDestroy();
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destroyed = true;
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} catch (LWJGLException e) {
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LWJGLUtil.log("Exception occurred while destroying SharedDrawable: " + e);
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}
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}
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private void checkDestroyed() {
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if ( destroyed )
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throw new IllegalStateException("SharedDrawable is destroyed");
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}
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}
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@ -150,7 +150,7 @@ public class DemoBox extends Frame {
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addWindowListener(new WindowAdapter() {
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public void windowClosing(WindowEvent e) {
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demoCanvas.destroy();
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demoCanvas.destroyCanvas();
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dispose();
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System.exit(0);
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}
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@ -269,7 +269,7 @@ public class DemoBox extends Frame {
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}
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}
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public void destroy() {
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public void destroyCanvas() {
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setActiveDemo(null);
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renderThread = null;
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}
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@ -0,0 +1,296 @@
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/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.test.opengl.multithread;
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import org.lwjgl.BufferUtils;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.input.Keyboard;
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import org.lwjgl.input.Mouse;
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import org.lwjgl.opengl.*;
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import org.lwjgl.util.glu.GLU;
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import org.lwjgl.util.glu.Sphere;
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import java.nio.FloatBuffer;
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/**
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* A test of loading textures in a background thread. This can be achieved in 2 ways:
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* <br>
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* a) A dummy Pbuffer is created and its context shares the rendering context.<br>
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* b) A SharedDrawable is used.<br>
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* <br>
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* When the test starts, there's no texture created and rendering is done with texturing disabled.
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* 2 seconds later a "dummy" texture is created in the background thread and texturing is enabled. This dummy texture
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* can by anything the developer wants to have as a placeholder while textures are being loaded.
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* Finally, 5 seconds later the "true" texture is loaded and displayed. This texture will change every 5 seconds after
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* that, until the test is terminated (ESC key).
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*
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* @author Spasi
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*/
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public final class BackgroundLoadTest {
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private static boolean run = true;
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private static BackgroundLoader backgroundLoader;
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private static Sphere sphere;
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private BackgroundLoadTest() {
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}
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public static void main(String[] args) {
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initialize(args);
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Util.checkGLError();
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try {
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backgroundLoader.start();
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} catch (LWJGLException e) {
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kill("Failed to start background thread.", e);
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}
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Util.checkGLError();
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while ( run ) {
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if ( !Display.isVisible() )
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Thread.yield();
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else {
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handleIO();
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GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
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renderObject();
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Util.checkGLError();
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// Restore camera position.
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GL11.glPopMatrix();
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GL11.glPushMatrix();
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}
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Display.update();
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if ( Display.isCloseRequested() )
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break;
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}
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cleanup();
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System.exit(0);
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}
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private static void initialize(String[] args) {
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if ( args.length != 1 )
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argsError();
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DisplayMode displayMode = null;
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try {
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DisplayMode[] modes = Display.getAvailableDisplayModes();
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displayMode = chooseMode(modes, 1024, 768);
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if ( displayMode == null )
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displayMode = chooseMode(modes, 800, 600);
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if ( displayMode == null )
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displayMode = chooseMode(modes, 640, 480);
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if ( displayMode == null )
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kill("Failed to set an appropriate display mode.");
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System.out.println("Setting display mode to: " + displayMode);
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Display.setDisplayMode(displayMode);
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Display.setTitle("Background Loading Test");
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Display.create(new PixelFormat(8, 24, 0));
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} catch (LWJGLException e) {
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kill(e.getMessage());
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}
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GL11.glViewport(0, 0, displayMode.getWidth(), displayMode.getHeight());
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GL11.glMatrixMode(GL11.GL_PROJECTION);
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GL11.glLoadIdentity();
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GLU.gluPerspective(45, displayMode.getWidth() / (float)displayMode.getHeight(), 1.0f, 10.0f);
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GL11.glMatrixMode(GL11.GL_MODELVIEW);
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GL11.glLoadIdentity();
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// Setup camera position.
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GL11.glTranslatef(0.0f, 0.0f, -4.0f);
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GL11.glRotatef(90.0f, 1.0f, 0.0f, 0.0f);
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GL11.glPushMatrix();
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GL11.glClearDepth(1.0f);
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GL11.glDepthFunc(GL11.GL_LEQUAL);
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GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST);
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GL11.glFrontFace(GL11.GL_CCW);
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GL11.glPolygonMode(GL11.GL_FRONT, GL11.GL_FILL);
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GL11.glCullFace(GL11.GL_BACK);
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GL11.glEnable(GL11.GL_CULL_FACE);
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GL11.glAlphaFunc(GL11.GL_GREATER, 0.0f);
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GL11.glEnable(GL11.GL_ALPHA_TEST);
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GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
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GL11.glDisable(GL11.GL_BLEND);
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GL11.glShadeModel(GL11.GL_SMOOTH);
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final FloatBuffer vectorBuffer = BufferUtils.createFloatBuffer(4);
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vectorBuffer.clear();
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vectorBuffer.put(0, 1.0f).put(1, 1.0f).put(2, 1.0f).put(3, 1.0f);
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GL11.glLight(GL11.GL_LIGHT0, GL11.GL_DIFFUSE, vectorBuffer);
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vectorBuffer.put(0, 1.0f).put(1, 1.0f).put(2, 1.0f).put(3, 1.0f);
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GL11.glLight(GL11.GL_LIGHT0, GL11.GL_AMBIENT, vectorBuffer);
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vectorBuffer.put(0, 1.0f).put(1, 1.0f).put(2, 0.5f).put(3, 1.0f);
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GL11.glLight(GL11.GL_LIGHT0, GL11.GL_SPECULAR, vectorBuffer);
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vectorBuffer.put(0, -1.0f / 3.0f).put(1, 1.0f / 3.0f).put(2, 1.0f / 3.0f).put(3, 0.0f); // Infinite
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GL11.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, vectorBuffer);
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vectorBuffer.put(0, 0.2f).put(1, 0.2f).put(2, 0.2f).put(3, 1.0f);
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GL11.glLightModel(GL11.GL_LIGHT_MODEL_AMBIENT, vectorBuffer);
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GL11.glEnable(GL11.GL_LIGHT0);
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GL11.glEnable(GL11.GL_LIGHTING);
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sphere = new Sphere();
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if ( "PB".equalsIgnoreCase(args[0]) ) {
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backgroundLoader = new BackgroundLoader() {
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Drawable getDrawable() throws LWJGLException {
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return new Pbuffer(2, 2, new PixelFormat(8, 24, 0), Display.getDrawable());
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}
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};
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} else if ( "SD".equalsIgnoreCase(args[0]) ) {
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backgroundLoader = new BackgroundLoader() {
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Drawable getDrawable() throws LWJGLException {
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return new SharedDrawable(Display.getDrawable());
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}
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};
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} else {
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argsError();
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}
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}
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private static void handleIO() {
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if ( Keyboard.getNumKeyboardEvents() != 0 ) {
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while ( Keyboard.next() ) {
|
||||
if ( Keyboard.getEventKeyState() )
|
||||
continue;
|
||||
|
||||
switch ( Keyboard.getEventKey() ) {
|
||||
case Keyboard.KEY_ESCAPE:
|
||||
run = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
while ( Mouse.next() ) ;
|
||||
}
|
||||
|
||||
static void renderObject() {
|
||||
GL11.glColor3f(1.0f, 1.0f, 1.0f);
|
||||
|
||||
int texID = backgroundLoader.getTexID();
|
||||
if ( texID == 0 ) {
|
||||
sphere.setTextureFlag(false);
|
||||
GL11.glDisable(GL11.GL_TEXTURE_2D);
|
||||
} else {
|
||||
sphere.setTextureFlag(true);
|
||||
GL11.glEnable(GL11.GL_TEXTURE_2D);
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, texID);
|
||||
}
|
||||
|
||||
sphere.draw(1.0f, 32, 32);
|
||||
|
||||
if ( texID != 0 ) { // Unbind so we can update from the background thread.
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
|
||||
GL11.glDisable(GL11.GL_TEXTURE_2D);
|
||||
}
|
||||
}
|
||||
|
||||
private static DisplayMode chooseMode(DisplayMode[] modes, int width, int height) {
|
||||
DisplayMode bestMode = null;
|
||||
|
||||
for ( int i = 0; i < modes.length; i++ ) {
|
||||
DisplayMode mode = modes[i];
|
||||
if ( mode.getWidth() == width && mode.getHeight() == height && mode.getFrequency() <= 85 ) {
|
||||
if ( bestMode == null || (mode.getBitsPerPixel() >= bestMode.getBitsPerPixel() && mode.getFrequency() > bestMode.getFrequency()) )
|
||||
bestMode = mode;
|
||||
}
|
||||
}
|
||||
|
||||
return bestMode;
|
||||
}
|
||||
|
||||
private static void cleanup() {
|
||||
backgroundLoader.cleanup();
|
||||
|
||||
Thread.yield(); // Let background thread finish.
|
||||
|
||||
if ( Display.isCreated() )
|
||||
Display.destroy();
|
||||
}
|
||||
|
||||
private static void argsError() {
|
||||
System.out.println("\nInvalid program arguments.");
|
||||
System.out.println("\nUsage: BackgroundLoadTest <testType>, where <testType> argument can be one of the following:\n");
|
||||
System.out.println("PB\t- Use a Pbuffer context for the background thread.");
|
||||
System.out.println("SD\t- Use a SharedDrawable context for the background thread.");
|
||||
|
||||
cleanup();
|
||||
System.exit(-1);
|
||||
}
|
||||
|
||||
static void kill(String reason) {
|
||||
System.out.println("The BackgroundLoadTest program was terminated because an error occured.\n");
|
||||
System.out.println("Reason: " + (reason == null ? "Unknown" : reason));
|
||||
|
||||
cleanup();
|
||||
System.exit(-1);
|
||||
}
|
||||
|
||||
static void kill(String reason, Throwable t) {
|
||||
System.out.println("The BackgroundLoadTest program was terminated because an exception occured.\n");
|
||||
System.out.println("Reason: " + (reason == null ? "Unknown" : reason));
|
||||
|
||||
System.out.println("Exception message: " + t.getMessage());
|
||||
|
||||
cleanup();
|
||||
System.exit(-1);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,191 @@
|
|||
/*
|
||||
* Copyright (c) 2002-2008 LWJGL Project
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met:
|
||||
*
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* * Neither the name of 'LWJGL' nor the names of
|
||||
* its contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
/*
|
||||
* Created by LWJGL.
|
||||
* User: spasi
|
||||
* Date: 2004-03-30
|
||||
* Time: 8:41:42 pm
|
||||
*/
|
||||
package org.lwjgl.test.opengl.multithread;
|
||||
|
||||
import org.lwjgl.BufferUtils;
|
||||
import org.lwjgl.LWJGLException;
|
||||
import org.lwjgl.opengl.Drawable;
|
||||
import org.lwjgl.opengl.GL11;
|
||||
import org.lwjgl.util.Color;
|
||||
import org.lwjgl.util.ReadableColor;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
|
||||
abstract class BackgroundLoader {
|
||||
|
||||
private static final int WIDTH = 32;
|
||||
private static final int HEIGHT = 32;
|
||||
|
||||
private static final Object lock = new Object();
|
||||
|
||||
private Drawable drawable;
|
||||
|
||||
private boolean running;
|
||||
|
||||
private ByteBuffer texture;
|
||||
private int texID;
|
||||
|
||||
protected BackgroundLoader() {
|
||||
running = true;
|
||||
texture = BufferUtils.createByteBuffer(WIDTH * HEIGHT * 3);
|
||||
}
|
||||
|
||||
abstract Drawable getDrawable() throws LWJGLException;
|
||||
|
||||
void cleanup() {
|
||||
running = false;
|
||||
}
|
||||
|
||||
void start() throws LWJGLException {
|
||||
new Thread(new Runnable() {
|
||||
public void run() {
|
||||
System.out.println("-- Background Thread started --");
|
||||
|
||||
System.out.println("** Sleeping, no texture created yet **");
|
||||
|
||||
long start = System.currentTimeMillis();
|
||||
|
||||
try {
|
||||
Thread.sleep(2000);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
|
||||
try {
|
||||
drawable = getDrawable();
|
||||
drawable.makeCurrent();
|
||||
} catch (LWJGLException e) {
|
||||
throw new RuntimeException(e);
|
||||
}
|
||||
|
||||
System.out.println("** Drawable created **");
|
||||
|
||||
synchronized ( lock ) {
|
||||
// Create a "dummy" texture while we wait for texture IO
|
||||
createCheckerTexture(Color.RED, Color.WHITE, 2);
|
||||
|
||||
texID = GL11.glGenTextures();
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, texID);
|
||||
GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGB, WIDTH, HEIGHT, 0, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, texture);
|
||||
|
||||
GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
|
||||
GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
|
||||
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
|
||||
}
|
||||
|
||||
System.out.println("** Dummy texture created **");
|
||||
|
||||
long lastTextureCreated = System.currentTimeMillis(); // Delay first texture creation
|
||||
int count = 0;
|
||||
while ( running ) {
|
||||
long time = System.currentTimeMillis();
|
||||
if ( time - lastTextureCreated < 5000 ) { // Update the texture every 5 seconds
|
||||
try {
|
||||
Thread.sleep(200);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
// Create the "true" texture
|
||||
if ( count % 2 == 0 )
|
||||
createGradientTexture(Color.RED, Color.BLUE);
|
||||
else
|
||||
createGradientTexture(Color.GREEN, Color.YELLOW);
|
||||
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, texID);
|
||||
GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGB, WIDTH, HEIGHT, 0, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, texture);
|
||||
|
||||
GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
|
||||
GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
|
||||
|
||||
GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
|
||||
|
||||
System.out.println("** Created new gradient texture **");
|
||||
|
||||
lastTextureCreated = System.currentTimeMillis();
|
||||
count++;
|
||||
}
|
||||
|
||||
drawable.destroy();
|
||||
|
||||
System.out.println("-- Background Thread finished --");
|
||||
}
|
||||
}).start();
|
||||
}
|
||||
|
||||
int getTexID() {
|
||||
synchronized ( lock ) {
|
||||
return texID;
|
||||
}
|
||||
}
|
||||
|
||||
private void createCheckerTexture(final ReadableColor a, final ReadableColor b, final int size) {
|
||||
int i = 0;
|
||||
for ( int y = 0; y < HEIGHT; y++ ) {
|
||||
for ( int x = 0; x < WIDTH; x++ ) {
|
||||
ReadableColor c = (x / size) % 2 == 0 ? ((y / size) % 2 == 0 ? a : b) : ((y / size) % 2 == 0 ? b : a);
|
||||
texture.put(i + 0, c.getRedByte());
|
||||
texture.put(i + 1, c.getGreenByte());
|
||||
texture.put(i + 2, c.getBlueByte());
|
||||
i += 3;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void createGradientTexture(final ReadableColor a, final ReadableColor b) {
|
||||
float l = 0.0f;
|
||||
int i = 0;
|
||||
for ( int y = 0; y < HEIGHT; y++ ) {
|
||||
for ( int x = 0; x < WIDTH; x++ ) {
|
||||
texture.put(i + 0, lerp(a.getRed(), b.getRed(), l));
|
||||
texture.put(i + 1, lerp(a.getGreen(), b.getGreen(), l));
|
||||
texture.put(i + 2, lerp(a.getBlue(), b.getBlue(), l));
|
||||
i += 3;
|
||||
}
|
||||
l += (1.0f / (HEIGHT - 1));
|
||||
}
|
||||
}
|
||||
|
||||
private static byte lerp(final int a, final int b, final float l) {
|
||||
return (byte)Math.round(((1.0f - l) * a + l * b));
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue