diff options
| author | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
|---|---|---|
| committer | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
| commit | 880653d31a8f1ff8384fdbc75b84934bceecfdb8 (patch) | |
| tree | bdafb71416f176d2a4b73bf716c9dc3f13685a8b /demos/RonsDemos/mipmap.java | |
Initial revision
Diffstat (limited to 'demos/RonsDemos/mipmap.java')
| -rw-r--r-- | demos/RonsDemos/mipmap.java | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/demos/RonsDemos/mipmap.java b/demos/RonsDemos/mipmap.java new file mode 100644 index 0000000..7d5f233 --- /dev/null +++ b/demos/RonsDemos/mipmap.java @@ -0,0 +1,317 @@ +/**
+ * @(#) mipmap.java
+ * @(#) author: Silicon Graphics, Inc. (converted to Java by Ron Cemer)
+ */
+
+/*
+ * Copyright (c) 1993-1997, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States. Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
+ */
+
+/* mipmap.c
+ * This program demonstrates using mipmaps for texture maps.
+ * To overtly show the effect of mipmaps, each mipmap reduction
+ * level has a solidly colored, contrasting texture image.
+ * Thus, the quadrilateral which is drawn is drawn with several
+ * different colors.
+ */
+
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.lang.*;
+import java.util.*;
+import java.io.*;
+import java.util.*;
+import gl4java.GLContext;
+import gl4java.awt.GLCanvas;
+
+public class mipmap extends Applet
+{
+ mipmapCanvas canvas = null;
+
+
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ Dimension d = getSize();
+ setLayout(new BorderLayout());
+ canvas = new mipmapCanvas(d.width, d.height);
+ add("Center", canvas);
+ }
+
+
+ /* Start the applet */
+
+
+ public void start()
+ {
+ }
+
+
+ /* Stop the applet */
+
+
+ public void stop()
+ {
+ }
+
+
+ /* Destroy the applet */
+
+
+ public void destroy()
+ {
+ canvas.cvsDispose();
+ }
+
+
+ /* Local GLCanvas extension class */
+
+
+ private class mipmapCanvas extends GLCanvas
+ {
+ byte mipmapImage32[] = new byte[32*32*4];
+ byte mipmapImage16[] = new byte[16*16*4];
+ byte mipmapImage8[] = new byte[8*8*4];
+ byte mipmapImage4[] = new byte[4*4*4];
+ byte mipmapImage2[] = new byte[2*2*4];
+ byte mipmapImage1[] = new byte[1*1*4];
+ int texName;
+
+ public mipmapCanvas(int w, int h)
+ {
+ super(w, h);
+ GLContext.gljNativeDebug = false;
+ GLContext.gljClassDebug = false;
+ }
+
+ public void preInit()
+ {
+ doubleBuffer = true;
+ stereoView = false;
+ }
+
+ public void init()
+ {
+ System.out.println("init(): " + this);
+ reshape(getSize().width, getSize().height);
+
+ gl.glEnable(GL_DEPTH_TEST);
+ gl.glShadeModel(GL_FLAT);
+
+ gl.glTranslatef(0.0f, 0.0f, -3.6f);
+ makeImages();
+ gl.glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+ int tnbuf[] = new int[1];
+ gl.glGenTextures(1, tnbuf);
+ texName = tnbuf[0];
+ gl.glBindTexture(GL_TEXTURE_2D, texName);
+ gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ gl.glTexParameteri
+ (GL_TEXTURE_2D,
+ GL_TEXTURE_MAG_FILTER,
+ GL_NEAREST);
+ gl.glTexParameteri
+ (GL_TEXTURE_2D,
+ GL_TEXTURE_MIN_FILTER,
+ GL_NEAREST_MIPMAP_NEAREST);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 0,
+ GL_RGBA,
+ 32,
+ 32,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage32);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 1,
+ GL_RGBA,
+ 16,
+ 16,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage16);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 2,
+ GL_RGBA,
+ 8,
+ 8,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage8);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 3,
+ GL_RGBA,
+ 4,
+ 4,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage4);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 4,
+ GL_RGBA,
+ 2,
+ 2,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage2);
+ gl.glTexImage2D
+ (GL_TEXTURE_2D,
+ 5,
+ GL_RGBA,
+ 1,
+ 1,
+ 0,
+ GL_RGBA,
+ GL_UNSIGNED_BYTE,
+ mipmapImage1);
+
+ gl.glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+ gl.glEnable(GL_TEXTURE_2D);
+
+ glj.gljCheckGL();
+ }
+
+ public void cvsDispose()
+ {
+ System.out.println("destroy(): " + this);
+ super.cvsDispose();
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ glu.gluPerspective(60.0f,(float)width/(float)height,1.0f,30000.0f);
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glLoadIdentity();
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ gl.glBindTexture(GL_TEXTURE_2D, texName);
+ gl.glBegin(GL_QUADS);
+ gl.glTexCoord2f(0.0f,0.0f); gl.glVertex3f(-2.0f,-1.0f,0.0f);
+ gl.glTexCoord2f(0.0f,8.0f); gl.glVertex3f(-2.0f,1.0f,0.0f);
+ gl.glTexCoord2f(8.0f,8.0f); gl.glVertex3f(2000.0f,1.0f,-6000.0f);
+ gl.glTexCoord2f(8.0f,0.0f); gl.glVertex3f(2000.0f,-1.0f,-6000.0f);
+ gl.glEnd();
+ gl.glFlush();
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+ }
+
+ private void makeImages()
+ {
+ int i, j, idx;
+
+ for (idx = i = 0; i < 32; i++)
+ {
+ for (j = 0; j < 32; j++)
+ {
+ mipmapImage32[idx++] = (byte)255;
+ mipmapImage32[idx++] = (byte)255;
+ mipmapImage32[idx++] = (byte)0;
+ mipmapImage32[idx++] = (byte)255;
+ }
+ }
+ for (idx = i = 0; i < 16; i++)
+ {
+ for (j = 0; j < 16; j++)
+ {
+ mipmapImage16[idx++] = (byte)255;
+ mipmapImage16[idx++] = (byte)0;
+ mipmapImage16[idx++] = (byte)255;
+ mipmapImage16[idx++] = (byte)255;
+ }
+ }
+ for (idx = i = 0; i < 8; i++)
+ {
+ for (j = 0; j < 8; j++)
+ {
+ mipmapImage8[idx++] = (byte)255;
+ mipmapImage8[idx++] = (byte)0;
+ mipmapImage8[idx++] = (byte)0;
+ mipmapImage8[idx++] = (byte)255;
+ }
+ }
+ for (idx = i = 0; i < 4; i++)
+ {
+ for (j = 0; j < 4; j++)
+ {
+ mipmapImage4[idx++] = (byte)0;
+ mipmapImage4[idx++] = (byte)255;
+ mipmapImage4[idx++] = (byte)0;
+ mipmapImage4[idx++] = (byte)255;
+ }
+ }
+ for (idx = i = 0; i < 2; i++)
+ {
+ for (j = 0; j < 2; j++)
+ {
+ mipmapImage2[idx++] = (byte)0;
+ mipmapImage2[idx++] = (byte)0;
+ mipmapImage2[idx++] = (byte)255;
+ mipmapImage2[idx++] = (byte)255;
+ }
+ }
+ mipmapImage1[0] = (byte)255;
+ mipmapImage1[1] = (byte)255;
+ mipmapImage1[2] = (byte)255;
+ mipmapImage1[3] = (byte)255;
+ }
+ }
+}
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