Added ESC key handling

1 files changed, 13 insertions, 13 deletions

diff --git a/progs/redbook/texsub.c b/progs/redbook/texsub.c
index 5dc36ec4e7..4e829675ab 100644
--- a/progs/redbook/texsub.c
+++ b/progs/redbook/texsub.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * 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 
+ * 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. 
+ * 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,
@@ -21,8 +21,8 @@
  * 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 
+ *
+ * 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
@@ -40,7 +40,7 @@
  *  two rectangles.  This program clamps the texture, if
  *  the texture coordinates fall outside 0.0 and 1.0.
  *  If the s key is pressed, a texture subimage is used to
- *  alter the original texture.  If the r key is pressed, 
+ *  alter the original texture.  If the r key is pressed,
  *  the original texture is restored.
  */
 #include <GL/glut.h>
@@ -61,10 +61,10 @@ static GLuint texName;
 void makeCheckImages(void)
 {
    int i, j, c;
-    
+
    for (i = 0; i < checkImageHeight; i++) {
       for (j = 0; j < checkImageWidth; j++) {
-         c = ((((i&0x8)==0)^((j&0x8))==0))*255;
+         c = ((((i&0x8)==0)^((j&0x8)==0)))*255;
          checkImage[i][j][0] = (GLubyte) c;
          checkImage[i][j][1] = (GLubyte) c;
          checkImage[i][j][2] = (GLubyte) c;
@@ -73,7 +73,7 @@ void makeCheckImages(void)
    }
    for (i = 0; i < subImageHeight; i++) {
       for (j = 0; j < subImageWidth; j++) {
-         c = ((((i&0x4)==0)^((j&0x4))==0))*255;
+         c = ((((i&0x4)==0)^((j&0x4)==0)))*255;
          subImage[i][j][0] = (GLubyte) c;
          subImage[i][j][1] = (GLubyte) 0;
          subImage[i][j][2] = (GLubyte) 0;
@@ -83,7 +83,7 @@ void makeCheckImages(void)
 }
 
 void init(void)
-{    
+{
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel(GL_FLAT);
    glEnable(GL_DEPTH_TEST);
@@ -98,7 +98,7 @@ void init(void)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight, 
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight,
                 0, GL_RGBA, GL_UNSIGNED_BYTE, checkImage);
 }
 
@@ -174,7 +174,7 @@ int main(int argc, char** argv)
    glutReshapeFunc(reshape);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
-   return 0; 
+   return 0;
 }
 #else
 int main(int argc, char** argv)