101 lines
3.0 KiB
Java
101 lines
3.0 KiB
Java
/*
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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.pbuffers;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.opengl.Pbuffer;
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/**
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* Implementations of this class should create a pbuffer and implement "render-to-texture" accordingly.
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*/
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abstract class TextureRenderer {
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protected final int width;
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protected final int height;
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private final int texID;
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protected Pbuffer pbuffer;
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protected TextureRenderer(final int width, final int height, final int texID) {
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this.width = width;
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this.height = height;
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this.texID = texID;
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try {
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pbuffer = init(width, height, texID);
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} catch (LWJGLException e) {
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e.printStackTrace();
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System.exit(-1);
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}
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}
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/**
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* Create and initialize the pbuffer.
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*
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* @param width
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* @param height
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* @param texID
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* @return
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* @throws LWJGLException
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*/
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protected abstract Pbuffer init(int width, int height, int texID) throws LWJGLException;
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/**
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* This will be called before rendering to the renderer. Implementations should setup the pbuffer context as necessary.
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*/
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void enable() {
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try {
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if ( pbuffer.isBufferLost() ) {
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System.out.println("Buffer contents lost - recreating the pbuffer");
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pbuffer.destroy();
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pbuffer = init(width, height, texID);
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}
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pbuffer.makeCurrent();
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} catch (LWJGLException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* Implementations should update the texture contents here.
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*/
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abstract void updateTexture();
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/**
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* Clean-up resources held by the renderer
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*/
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final void destroy() {
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pbuffer.destroy();
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}
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} |