+++ /dev/null
-
-/* Copyright (c) Mark J. Kilgard, 1994. */
-
-/*
- * (c) Copyright 1993, 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- * Unpublished-- rights reserved under the copyright laws of the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(TM) is a trademark of Silicon Graphics, Inc.
- */
-/* texturesurf.c
- * This program uses evaluators to generate a curved
- * surface and automatically generated texture coordinates.
- */
-
-#include <stdlib.h>
-#include <GL/glut.h>
-#include <math.h>
-
-GLfloat ctrlpoints[4][4][3] = {
- {{ -1.5, -1.5, 4.0}, { -0.5, -1.5, 2.0},
- {0.5, -1.5, -1.0}, {1.5, -1.5, 2.0}},
- {{ -1.5, -0.5, 1.0}, { -0.5, -0.5, 3.0},
- {0.5, -0.5, 0.0}, {1.5, -0.5, -1.0}},
- {{ -1.5, 0.5, 4.0}, { -0.5, 0.5, 0.0},
- {0.5, 0.5, 3.0}, {1.5, 0.5, 4.0}},
- {{ -1.5, 1.5, -2.0}, { -0.5, 1.5, -2.0},
- {0.5, 1.5, 0.0}, {1.5, 1.5, -1.0}}
-};
-
-GLfloat texpts[2][2][2] = {{{0.0, 0.0}, {0.0, 1.0}},
- {{1.0, 0.0}, {1.0, 1.0}}};
-
-static void display(void)
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glColor3f(1.0, 1.0, 1.0);
- glEvalMesh2(GL_FILL, 0, 20, 0, 20);
- glFlush();
-}
-
-#define imageWidth 64
-#define imageHeight 64
-GLubyte image[3*imageWidth*imageHeight];
-
-static void makeImage(void)
-{
- int i, j;
- float ti, tj;
-
- for (i = 0; i < imageWidth; i++) {
- ti = 2.0*3.14159265*i/imageWidth;
- for (j = 0; j < imageHeight; j++) {
- tj = 2.0*3.14159265*j/imageHeight;
-
- image[3*(imageHeight*i+j)] = (GLubyte) 127*(1.0+sin(ti));
- image[3*(imageHeight*i+j)+1] = (GLubyte) 127*(1.0+cos(2*tj));
- image[3*(imageHeight*i+j)+2] = (GLubyte) 127*(1.0+cos(ti+tj));
- }
- }
-}
-
-static void myinit(void)
-{
- glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4,
- 0, 1, 12, 4, &ctrlpoints[0][0][0]);
- glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2,
- 0, 1, 4, 2, &texpts[0][0][0]);
- glEnable(GL_MAP2_TEXTURE_COORD_2);
- glEnable(GL_MAP2_VERTEX_3);
- glMapGrid2f(20, 0.0, 1.0, 20, 0.0, 1.0);
- makeImage();
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexImage2D(GL_TEXTURE_2D, 0, 3, imageWidth, imageHeight, 0,
- GL_RGB, GL_UNSIGNED_BYTE, image);
- glEnable(GL_TEXTURE_2D);
- glEnable(GL_DEPTH_TEST);
- glEnable(GL_NORMALIZE);
- glShadeModel (GL_FLAT);
-}
-
-static void myReshape(int w, int h)
-{
- glViewport(0, 0, w, h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- if (w <= h)
- glOrtho(-4.0, 4.0, -4.0*(GLfloat)h/(GLfloat)w,
- 4.0*(GLfloat)h/(GLfloat)w, -4.0, 4.0);
- else
- glOrtho(-4.0*(GLfloat)w/(GLfloat)h,
- 4.0*(GLfloat)w/(GLfloat)h, -4.0, 4.0, -4.0, 4.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glRotatef(85.0, 1.0, 1.0, 1.0);
-}
-
-static void
-key(unsigned char k, int x, int y)
-{
- switch (k) {
- case 27: /* Escape */
- exit(0);
- break;
- default:
- return;
- }
- glutPostRedisplay();
-}
-
-int main(int argc, char** argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
- glutCreateWindow (argv[0]);
- myinit();
- glutReshapeFunc (myReshape);
- glutDisplayFunc(display);
- glutKeyboardFunc(key);
- glutMainLoop();
- return 0; /* ANSI C requires main to return int. */
-}
projects / mesa.git / blobdiff