215 lines
7.0 KiB
Java
215 lines
7.0 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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/**
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* $Id$
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*
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* Simple java test program.
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision$
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*/
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package org.lwjgl.test.opengl;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.FloatBuffer;
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import java.nio.IntBuffer;
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import org.lwjgl.Sys;
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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.ARBBufferObject;
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import org.lwjgl.opengl.ARBVertexBufferObject;
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import org.lwjgl.opengl.Display;
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import org.lwjgl.opengl.DisplayMode;
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import org.lwjgl.opengl.GL11;
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import org.lwjgl.opengl.GLContext;
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import org.lwjgl.util.glu.GLU;
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public final class VBOTest {
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static {
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try {
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//find first display mode that allows us 640*480*16
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int mode = -1;
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DisplayMode[] modes = Display.getAvailableDisplayModes();
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for ( int i = 0; i < modes.length; i++ ) {
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if ( modes[i].getWidth() == 640
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&& modes[i].getHeight() == 480
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&& modes[i].getBitsPerPixel() >= 16 ) {
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mode = i;
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break;
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}
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}
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if ( mode != -1 ) {
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//select above found displaymode
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System.out.println("Setting display mode to " + modes[mode]);
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Display.setDisplayMode(modes[mode]);
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System.out.println("Created display.");
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}
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} catch (Exception e) {
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System.err.println("Failed to create display due to " + e);
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}
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}
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static {
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try {
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Display.create();
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System.out.println("Created OpenGL.");
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} catch (Exception e) {
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System.err.println("Failed to create OpenGL due to " + e);
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System.exit(1);
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}
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}
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/**
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* Is the game finished?
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*/
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private static boolean finished;
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/**
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* A rotating square!
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*/
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private static float angle;
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private static int buffer_id;
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private static FloatBuffer vertices;
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private static ByteBuffer mapped_buffer = null;
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private static FloatBuffer mapped_float_buffer = null;
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public static void main(String[] arguments) {
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try {
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init();
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while ( !finished ) {
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Display.update();
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if ( !Display.isVisible() )
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Thread.sleep(200);
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else if ( Display.isCloseRequested() )
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System.exit(0);
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mainLoop();
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render();
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}
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} catch (Throwable t) {
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t.printStackTrace();
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} finally {
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cleanup();
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}
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System.exit(0);
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}
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/**
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* All calculations are done in here
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*/
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private static void mainLoop() {
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angle += 1f;
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if ( angle > 360.0f )
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angle = 0.0f;
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if ( Mouse.getDX() != 0 || Mouse.getDY() != 0 || Mouse.getDWheel() != 0 )
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System.out.println("Mouse moved " + Mouse.getDX() + " " + Mouse.getDY() + " " + Mouse.getDWheel());
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for ( int i = 0; i < Mouse.getButtonCount(); i++ )
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if ( Mouse.isButtonDown(i) )
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System.out.println("Button " + i + " down");
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if ( Keyboard.isKeyDown(Keyboard.KEY_ESCAPE) )
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finished = true;
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for ( int i = 0; i < Keyboard.getNumKeyboardEvents(); i++ ) {
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Keyboard.next();
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if ( Keyboard.getEventKey() == Keyboard.KEY_ESCAPE && Keyboard.getEventKeyState() )
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finished = true;
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if ( Keyboard.getEventKey() == Keyboard.KEY_T && Keyboard.getEventKeyState() )
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System.out.println("Current time: " + Sys.getTime());
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}
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}
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/**
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* All rendering is done in here
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*/
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private static void render() {
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GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
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GL11.glPushMatrix();
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GL11.glTranslatef(Display.getDisplayMode().getWidth() / 2, Display.getDisplayMode().getHeight() / 2, 0.0f);
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GL11.glRotatef(angle, 0, 0, 1.0f);
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ByteBuffer new_mapped_buffer = ARBBufferObject.glMapBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB,
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ARBBufferObject.GL_WRITE_ONLY_ARB,
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mapped_buffer);
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if ( new_mapped_buffer != mapped_buffer )
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mapped_float_buffer = new_mapped_buffer.order(ByteOrder.nativeOrder()).asFloatBuffer();
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mapped_buffer = new_mapped_buffer;
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mapped_float_buffer.rewind();
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vertices.rewind();
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mapped_float_buffer.put(vertices);
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if ( ARBBufferObject.glUnmapBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB) )
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GL11.glDrawArrays(GL11.GL_QUADS, 0, 4);
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GL11.glPopMatrix();
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}
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/**
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* Initialize
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*/
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private static void init() throws Exception {
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System.out.println("Timer resolution: " + Sys.getTimerResolution());
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// Go into orthographic projection mode.
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GL11.glMatrixMode(GL11.GL_PROJECTION);
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GL11.glLoadIdentity();
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GLU.gluOrtho2D(0, Display.getDisplayMode().getWidth(), 0, Display.getDisplayMode().getHeight());
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GL11.glMatrixMode(GL11.GL_MODELVIEW);
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GL11.glLoadIdentity();
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GL11.glViewport(0, 0, Display.getDisplayMode().getWidth(), Display.getDisplayMode().getHeight());
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if ( !GLContext.getCapabilities().GL_ARB_vertex_buffer_object ) {
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System.out.println("ARB VBO not supported!");
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System.exit(1);
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}
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IntBuffer int_buffer = ByteBuffer.allocateDirect(4).order(ByteOrder.nativeOrder()).asIntBuffer();
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ARBBufferObject.glGenBuffersARB(int_buffer);
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buffer_id = int_buffer.get(0);
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ARBBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, buffer_id);
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vertices = ByteBuffer.allocateDirect(2 * 4 * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
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vertices.put(-50).put(-50).put(50).put(-50).put(50).put(50).put(-50).put(50);
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ARBBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, 2 * 4 * 4, ARBBufferObject.GL_STREAM_DRAW_ARB);
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GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
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GL11.glVertexPointer(2, GL11.GL_FLOAT, 0, 0);
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}
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/**
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* Cleanup
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*/
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private static void cleanup() {
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IntBuffer int_buffer = ByteBuffer.allocateDirect(4).order(ByteOrder.nativeOrder()).asIntBuffer();
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int_buffer.put(0, buffer_id);
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ARBBufferObject.glDeleteBuffersARB(int_buffer);
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Display.destroy();
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}
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}
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