+/*
+ * 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+ * Unpublished-- rights reserved under the copyright laws of the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.
+ */
+
+/*
+ * varray.c
+ * This program demonstrates vertex arrays.
+ */
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef __APPLE__
+# include <GLUT/glut.h>
+#else
+# include <GL/glut.h>
+#endif
+
+
+#define POINTER 1
+#define INTERLEAVED 2
+
+#define DRAWARRAY 1
+#define ARRAYELEMENT 2
+#define DRAWELEMENTS 3
+
+static int setupMethod = POINTER;
+static int derefMethod = DRAWARRAY;
+
+static int win;
+
+static void setupPointers(void)
+{
+ static GLint vertices[] = {
+ 25, 25,
+ 100, 325,
+ 175, 25,
+ 175, 325,
+ 250, 25,
+ 325, 325
+ };
+ static GLfloat colors[] = {
+ 1.0 , 0.2 , 0.2 ,
+ 0.2 , 0.2 , 1.0 ,
+ 0.8 , 1.0 , 0.2 ,
+ 0.75, 0.75, 0.75,
+ 0.35, 0.35, 0.35,
+ 0.5 , 0.5 , 0.5
+ };
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_COLOR_ARRAY);
+
+ glVertexPointer(2, GL_INT, 0, vertices);
+ glColorPointer(3, GL_FLOAT, 0, colors);
+}
+
+static void setupInterleave(void)
+{
+ static GLfloat intertwined[] = {
+ 1.0, 0.2, 1.0, 100.0, 100.0, 0.0,
+ 1.0, 0.2, 0.2, 0.0, 200.0, 0.0,
+ 1.0, 1.0, 0.2, 100.0, 300.0, 0.0,
+ 0.2, 1.0, 0.2, 200.0, 300.0, 0.0,
+ 0.2, 1.0, 1.0, 300.0, 200.0, 0.0,
+ 0.2, 0.2, 1.0, 200.0, 100.0, 0.0
+ };
+
+ glInterleavedArrays(GL_C3F_V3F, 0, intertwined);
+}
+
+static void init(void)
+{
+ glClearColor(0.0, 0.0, 0.0, 0.0);
+ glShadeModel(GL_SMOOTH);
+ setupPointers();
+}
+
+static void display(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ if (derefMethod == DRAWARRAY)
+ glDrawArrays(GL_TRIANGLES, 0, 6);
+ else if (derefMethod == ARRAYELEMENT) {
+ glBegin(GL_TRIANGLES);
+ glArrayElement(2);
+ glArrayElement(3);
+ glArrayElement(5);
+ glEnd();
+ }
+ else if (derefMethod == DRAWELEMENTS) {
+ GLuint indices[4] = {0, 1, 3, 4};
+
+ glDrawElements(GL_POLYGON, 4, GL_UNSIGNED_INT, indices);
+ }
+ glFlush();
+
+ glutDestroyWindow(win);
+
+ exit(0);
+}
+
+static void reshape(int w, int h)
+{
+ glViewport(0, 0, (GLsizei) w, (GLsizei) h);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluOrtho2D(0.0, (GLdouble) w, 0.0, (GLdouble) h);
+}
+
+int main(int argc, char** argv)
+{
+ glutInit(&argc, argv);
+ glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
+ glutInitWindowSize(350, 350);
+ glutInitWindowPosition(100, 100);
+ win = glutCreateWindow(argv[0]);
+ init();
+ glutDisplayFunc(display);
+ glutReshapeFunc(reshape);
+ glutMainLoop();
+ return 0;
+}