+++ /dev/null
-/*
- * 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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
-
-/*
- * aapoly.c
- * This program draws filled polygons with antialiased
- * edges. The special GL_SRC_ALPHA_SATURATE blending
- * function is used.
- * Pressing the 't' key turns the antialiasing on and off.
- */
-#include <GL/glut.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-GLboolean polySmooth = GL_TRUE;
-
-static void init(void)
-{
- glCullFace (GL_BACK);
- glEnable (GL_CULL_FACE);
- glBlendFunc (GL_SRC_ALPHA_SATURATE, GL_ONE);
- glClearColor (0.0, 0.0, 0.0, 0.0);
-}
-
-#define NFACE 6
-#define NVERT 8
-static void drawCube(GLdouble x0, GLdouble x1, GLdouble y0, GLdouble y1,
- GLdouble z0, GLdouble z1)
-{
- static GLfloat v[8][3];
- static GLfloat c[8][4] = {
- {0.0, 0.0, 0.0, 1.0}, {1.0, 0.0, 0.0, 1.0},
- {0.0, 1.0, 0.0, 1.0}, {1.0, 1.0, 0.0, 1.0},
- {0.0, 0.0, 1.0, 1.0}, {1.0, 0.0, 1.0, 1.0},
- {0.0, 1.0, 1.0, 1.0}, {1.0, 1.0, 1.0, 1.0}
- };
-
-/* indices of front, top, left, bottom, right, back faces */
- static GLubyte indices[NFACE][4] = {
- {4, 5, 6, 7}, {2, 3, 7, 6}, {0, 4, 7, 3},
- {0, 1, 5, 4}, {1, 5, 6, 2}, {0, 3, 2, 1}
- };
-
- v[0][0] = v[3][0] = v[4][0] = v[7][0] = x0;
- v[1][0] = v[2][0] = v[5][0] = v[6][0] = x1;
- v[0][1] = v[1][1] = v[4][1] = v[5][1] = y0;
- v[2][1] = v[3][1] = v[6][1] = v[7][1] = y1;
- v[0][2] = v[1][2] = v[2][2] = v[3][2] = z0;
- v[4][2] = v[5][2] = v[6][2] = v[7][2] = z1;
-
-#ifdef GL_VERSION_1_1
- glEnableClientState (GL_VERTEX_ARRAY);
- glEnableClientState (GL_COLOR_ARRAY);
- glVertexPointer (3, GL_FLOAT, 0, v);
- glColorPointer (4, GL_FLOAT, 0, c);
- glDrawElements (GL_QUADS, NFACE*4, GL_UNSIGNED_BYTE, indices);
- glDisableClientState (GL_VERTEX_ARRAY);
- glDisableClientState (GL_COLOR_ARRAY);
-#else
- printf ("If this is GL Version 1.0, ");
- printf ("vertex arrays are not supported.\n");
- exit(1);
-#endif
-}
-
-/* Note: polygons must be drawn from front to back
- * for proper blending.
- */
-static void display(void)
-{
- if (polySmooth) {
- glClear (GL_COLOR_BUFFER_BIT);
- glEnable (GL_BLEND);
- glEnable (GL_POLYGON_SMOOTH);
- glDisable (GL_DEPTH_TEST);
- }
- else {
- glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glDisable (GL_BLEND);
- glDisable (GL_POLYGON_SMOOTH);
- glEnable (GL_DEPTH_TEST);
- }
-
- glPushMatrix ();
- glTranslatef (0.0, 0.0, -8.0);
- glRotatef (30.0, 1.0, 0.0, 0.0);
- glRotatef (60.0, 0.0, 1.0, 0.0);
- drawCube(-0.5, 0.5, -0.5, 0.5, -0.5, 0.5);
- glPopMatrix ();
-
- glFlush ();
-}
-
-static void reshape(int w, int h)
-{
- glViewport(0, 0, (GLsizei) w, (GLsizei) h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(30.0, (GLfloat) w/(GLfloat) h, 1.0, 20.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-}
-
-/* ARGSUSED1 */
-static void keyboard(unsigned char key, int x, int y)
-{
- switch (key) {
- case 't':
- case 'T':
- polySmooth = !polySmooth;
- glutPostRedisplay();
- break;
- case 27:
- exit(0); /* Escape key */
- break;
- default:
- break;
- }
-}
-
-/* Main Loop
- */
-int main(int argc, char** argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB
- | GLUT_ALPHA | GLUT_DEPTH);
- glutInitWindowSize(200, 200);
- glutCreateWindow(argv[0]);
- init ();
- glutReshapeFunc (reshape);
- glutKeyboardFunc (keyboard);
- glutDisplayFunc (display);
- glutMainLoop();
- return 0;
-}
-
projects / mesa.git / blobdiff