progs/redbook: add additional tests for GL 1.4

1 files changed, 194 insertions, 0 deletions

diff --git a/progs/redbook/fogcoord.c b/progs/redbook/fogcoord.c
new file mode 100644
index 00000000000..39e4689948d
--- /dev/null
+++ b/progs/redbook/fogcoord.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 1993-2003, 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  Unpublished - rights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.
+ *	1500 Crittenden Lane
+ *	Mountain View, CA  94043
+ *	United State of America
+ *
+ * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
+ */
+
+/*
+ *  fogcoord.c
+ *
+ *  This program demonstrates the use of explicit fog 
+ *  coordinates.  You can press the keyboard and change 
+ *  the fog coordinate value at any vertex.  You can
+ *  also switch between using explicit fog coordinates 
+ *  and the default fog generation mode.
+ * 
+ *  Pressing the 'f' and 'b' keys move the viewer forward
+ *  and backwards. 
+ *  Pressing 'c' initiates the default fog generation.
+ *  Pressing capital 'C' restores explicit fog coordinates.
+ *  Pressing '1', '2', '3', '8', '9', and '0' add or
+ *  subtract from the fog coordinate values at one of the
+ *  three vertices of the triangle. 
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <GL/glut.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+static GLfloat f1, f2, f3;
+
+/*  Initialize fog
+ */
+static void init(void)
+{
+   GLfloat fogColor[4] = {0.0, 0.25, 0.25, 1.0};
+   f1 = 1.0f;
+   f2 = 5.0f;
+   f3 = 10.0f;
+
+   glEnable(GL_FOG);
+   glFogi (GL_FOG_MODE, GL_EXP);
+   glFogfv (GL_FOG_COLOR, fogColor);
+   glFogf (GL_FOG_DENSITY, 0.25);
+   glHint (GL_FOG_HINT, GL_DONT_CARE);
+   glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
+   glClearColor(0.0, 0.25, 0.25, 1.0);  /* fog color */
+}
+
+/* display() draws a triangle at an angle.
+ */
+static void display(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   glColor3f (1.0f, 0.75f, 0.0f);
+   glBegin (GL_TRIANGLES);
+   glFogCoordfEXT (f1); 
+   glVertex3f (2.0f, -2.0f, 0.0f);
+   glFogCoordfEXT (f2); 
+   glVertex3f (-2.0f, 0.0f, -5.0f);
+   glFogCoordfEXT (f3); 
+   glVertex3f (0.0f, 2.0f, -10.0f);
+   glEnd();
+
+   glutSwapBuffers();
+}
+
+static void reshape(int w, int h)
+{
+   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   gluPerspective (45.0, 1.0, 0.25, 25.0);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity ();
+   glTranslatef (0.0, 0.0, -5.0);
+}
+
+static void keyboard(unsigned char key, int x, int y)
+{
+   switch (key) {
+      case 'c':
+         glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT);
+         glutPostRedisplay();
+         break;
+      case 'C':
+         glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
+         glutPostRedisplay();
+         break;
+      case '1':
+         f1 = f1 + 0.25; 
+         glutPostRedisplay();
+         break;
+      case '2':
+         f2 = f2 + 0.25; 
+         glutPostRedisplay();
+         break;
+      case '3':
+         f3 = f3 + 0.25; 
+         glutPostRedisplay();
+         break;
+      case '8':
+         if (f1 > 0.25) {
+            f1 = f1 - 0.25; 
+            glutPostRedisplay();
+         }
+         break;
+      case '9':
+         if (f2 > 0.25) {
+            f2 = f2 - 0.25; 
+            glutPostRedisplay();
+         }
+         break;
+      case '0':
+         if (f3 > 0.25) {
+            f3 = f3 - 0.25; 
+            glutPostRedisplay();
+         }
+         break;
+      case 'b':
+         glMatrixMode (GL_MODELVIEW);
+         glTranslatef (0.0, 0.0, -0.25);
+         glutPostRedisplay();
+         break;
+      case 'f':
+         glMatrixMode (GL_MODELVIEW);
+         glTranslatef (0.0, 0.0, 0.25);
+         glutPostRedisplay();
+         break;
+      case 27:
+         exit(0);
+         break;
+      default:
+         break;
+   }
+}
+
+
+/*  Main Loop
+ *  Open window with initial window size, title bar, 
+ *  RGBA display mode, depth buffer, and handle input events.
+ */
+int main(int argc, char** argv)
+{
+   glutInit(&argc, argv);
+   glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
+   glutInitWindowSize(500, 500);
+   glutCreateWindow(argv[0]);
+   init();
+   glutReshapeFunc (reshape);
+   glutKeyboardFunc (keyboard);
+   glutDisplayFunc (display);
+   glutMainLoop();
+   return 0;
+}