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- /*
- * (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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
- /* accum.c
- */
- #include <GL/gl.h>
- #include <GL/glu.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include "glaux.h"
-
- GLsizei width, height;
-
- void myinit(void)
- {
- GLfloat ambient[] = { 0.4, 0.4, 0.4, 1.0 };
- GLfloat diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat specular[] = { 1.0, 1.0, 1.0, 1.0 };
- GLfloat position[] = { 0.0, 2.0, 2.0, 0.0 };
- GLfloat mat_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
- GLfloat mat_diffuse[] = { 0.7, 0.7, 0.7, 1.0 };
- GLfloat mat_specular[] = { 0.9, 0.9, 0.9, 1.0 };
- GLfloat mat_shininess[] = { 50.0 };
- GLfloat lmodel_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
-
- glEnable(GL_DEPTH_TEST);
- glDepthFunc(GL_LESS);
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
- glLightfv(GL_LIGHT0, GL_POSITION, position);
-
- glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
- glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
- glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
-
- glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_AUTO_NORMAL);
- glEnable(GL_NORMALIZE);
-
- glEnable(GL_CULL_FACE);
- glCullFace(GL_FRONT);
-
- glClearAccum(0.0, 0.0, 0.0, 0.0);
- }
-
- #define ACSIZE 16
-
- GLfloat dx[ACSIZE], dy[ACSIZE];
-
- GLfloat jitter3[3][2] = {
- {0.5, 0.5},
- {1.35899e-05, 0.230369},
- {0.000189185, 0.766878},
- };
-
- GLfloat jitter11[11][2] = {
- {0.5, 0.5}, {0.406537, 0.135858},
- {0.860325, 0.968558}, {0.680141, 0.232877},
- {0.775694, 0.584871}, {0.963354, 0.309056},
- {0.593493, 0.864072}, {0.224334, 0.415055},
- {0.0366643, 0.690884}, {0.139685, 0.0313988},
- {0.319861, 0.767097},
- };
-
- GLfloat jitter16[16][2] = {
- {0.4375, 0.4375}, {0.1875, 0.5625},
- {0.9375, 1.1875}, {0.4375, 0.9375-1},
- {0.6875, 0.5625}, {0.1875, 0.0625},
- {0.6875, 0.3125}, {0.1875, 0.3125},
- {0.4375, 0.1875}, {0.9375-1, 0.4375},
- {0.6875, 0.8125}, {0.4375, 0.6875},
- {0.6875, 0.0625}, {0.9375, 0.9375},
- {1.1875, 0.8125}, {0.9375, 0.6875},
- };
-
- GLfloat jitter29[29][2] = {
- {0.5, 0.5}, {0.498126, 0.141363},
- {0.217276, 0.651732}, {0.439503, 0.954859},
- {0.734171, 0.836294}, {0.912454, 0.79952},
- {0.406153, 0.671156}, {0.0163892, 0.631994},
- {0.298064, 0.843476}, {0.312025, 0.0990405},
- {0.98135, 0.965697}, {0.841999, 0.272378},
- {0.559348, 0.32727}, {0.809331, 0.638901},
- {0.632583, 0.994471}, {0.00588314, 0.146344},
- {0.713365, 0.437896}, {0.185173, 0.246584},
- {0.901735, 0.474544}, {0.366423, 0.296698},
- {0.687032, 0.188184}, {0.313256, 0.472999},
- {0.543195, 0.800044}, {0.629329, 0.631599},
- {0.818263, 0.0439354}, {0.163978, 0.00621497},
- {0.109533, 0.812811}, {0.131325, 0.471624},
- {0.0196755, 0.331813},
- };
-
- GLfloat jitter90[90][2] = {
- {0.5, 0.5}, {0.784289, 0.417355},
- {0.608691, 0.678948}, {0.546538, 0.976002},
- {0.972245, 0.270498}, {0.765121, 0.189392},
- {0.513193, 0.743827}, {0.123709, 0.874866},
- {0.991334, 0.745136}, {0.56342, 0.0925047},
- {0.662226, 0.143317}, {0.444563, 0.928535},
- {0.248017, 0.981655}, {0.100115, 0.771923},
- {0.593937, 0.559383}, {0.392095, 0.225932},
- {0.428776, 0.812094}, {0.510615, 0.633584},
- {0.836431, 0.00343328}, {0.494037, 0.391771},
- {0.617448, 0.792324}, {0.688599, 0.48914},
- {0.530421, 0.859206}, {0.0742278, 0.665344},
- {0.979388, 0.626835}, {0.183806, 0.479216},
- {0.151222, 0.0803998}, {0.476489, 0.157863},
- {0.792675, 0.653531}, {0.0990416, 0.267284},
- {0.776667, 0.303894}, {0.312904, 0.296018},
- {0.288777, 0.691008}, {0.460097, 0.0436075},
- {0.594323, 0.440751}, {0.876296, 0.472043},
- {0.0442623, 0.0693901}, {0.355476, 0.00442787},
- {0.391763, 0.361327}, {0.406994, 0.696053},
- {0.708393, 0.724992}, {0.925807, 0.933103},
- {0.850618, 0.11774}, {0.867486, 0.233677},
- {0.208805, 0.285484}, {0.572129, 0.211505},
- {0.172931, 0.180455}, {0.327574, 0.598031},
- {0.685187, 0.372379}, {0.23375, 0.878555},
- {0.960657, 0.409561}, {0.371005, 0.113866},
- {0.29471, 0.496941}, {0.748611, 0.0735321},
- {0.878643, 0.34504}, {0.210987, 0.778228},
- {0.692961, 0.606194}, {0.82152, 0.8893},
- {0.0982095, 0.563104}, {0.214514, 0.581197},
- {0.734262, 0.956545}, {0.881377, 0.583548},
- {0.0560485, 0.174277}, {0.0729515, 0.458003},
- {0.719604, 0.840564}, {0.325388, 0.7883},
- {0.26136, 0.0848927}, {0.393754, 0.467505},
- {0.425361, 0.577672}, {0.648594, 0.0248658},
- {0.983843, 0.521048}, {0.272936, 0.395127},
- {0.177695, 0.675733}, {0.89175, 0.700901},
- {0.632301, 0.908259}, {0.782859, 0.53611},
- {0.0141421, 0.855548}, {0.0437116, 0.351866},
- {0.939604, 0.0450863}, {0.0320883, 0.962943},
- {0.341155, 0.895317}, {0.952087, 0.158387},
- {0.908415, 0.820054}, {0.481435, 0.281195},
- {0.675525, 0.25699}, {0.585273, 0.324454},
- {0.156488, 0.376783}, {0.140434, 0.977416},
- {0.808155, 0.77305}, {0.282973, 0.188937},
- };
-
- void loaddxdy(void)
- {
- long i;
- for (i = 0; i < ACSIZE; i++) {
- dx[i] = jitter16[i][0]*10/width;
- dy[i] = jitter16[i][1]*10/height;
- }
- }
-
- void display(void)
- {
- int i;
-
- glClear(GL_ACCUM_BUFFER_BIT);
- loaddxdy();
- for (i = 0; i < (ACSIZE); i++) {
- printf("Pass %d\n", i);
- glPushMatrix();
- glTranslatef(dx[i], dy[i], 0.0);
- glRotatef(45.0, 1.0, 1.0, 1.0);
- glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
- auxSolidTeapot(1.0);
- glPopMatrix();
- glAccum(GL_ACCUM, 1.0/(ACSIZE));
- }
- printf("final job\n");
- glAccum(GL_RETURN, 1.0);
- printf("done\n");
- glFlush();
- }
-
- void myReshape(int w, int h)
- {
- width = w; height = h;
- glViewport(0, 0, w, h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- if (w <= h)
- glOrtho(-3.0, 3.0, -3.0*(GLfloat) h/(GLfloat) w,
- 3.0*(GLfloat) h/(GLfloat) w, -15.0, 15.0);
- else
- glOrtho(-3.0*(GLfloat) w/(GLfloat) h,
- 3.0*(GLfloat) w/(GLfloat) h, -3.0, 3.0, -15.0, 15.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- }
-
- int main(int argc, char** argv)
- {
- auxInitDisplayMode (AUX_SINGLE | AUX_RGB
- | AUX_ACCUM | AUX_DEPTH);
- auxInitPosition (0, 0, 300, 300);
- if (!auxInitWindow (argv[0]))
- auxQuit();
- myinit();
- auxReshapeFunc (myReshape);
- auxMainLoop(display);
- return 0;
- }
-