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-rw-r--r--progs/windml/uglstencil.c242
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diff --git a/progs/windml/uglstencil.c b/progs/windml/uglstencil.c
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--- a/progs/windml/uglstencil.c
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-
-/* 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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
-/* stencil.c
- * This program draws two rotated tori in a window.
- * A diamond in the center of the window masks out part
- * of the scene. Within this mask, a different model
- * (a sphere) is drawn in a different color.
- */
-
-/*
- * Conversion to UGL/Mesa by Stephane Raimbault, 2001
- */
-
-#include <stdio.h>
-#include <math.h>
-
-#include <ugl/ugl.h>
-#include <ugl/uglevent.h>
-#include <ugl/uglinput.h>
-
-#include <GL/uglmesa.h>
-#include <GL/glu.h>
-#include <GL/uglglutshapes.h>
-
-#define YELLOWMAT 1
-#define BLUEMAT 2
-
-UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
-UGL_LOCAL UGL_EVENT_Q_ID qId;
-UGL_LOCAL UGL_MESA_CONTEXT umc;
-
-UGL_LOCAL void initGL (GLsizei w, GLsizei h)
- {
- GLfloat yellow_diffuse[] = { 0.7, 0.7, 0.0, 1.0 };
- GLfloat yellow_specular[] = { 1.0, 1.0, 1.0, 1.0 };
-
- GLfloat blue_diffuse[] = { 0.1, 0.1, 0.7, 1.0 };
- GLfloat blue_specular[] = { 0.1, 1.0, 1.0, 1.0 };
-
- GLfloat position_one[] = { 1.0, 1.0, 1.0, 0.0 };
-
- glNewList(YELLOWMAT, GL_COMPILE);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, yellow_diffuse);
- glMaterialfv(GL_FRONT, GL_SPECULAR, yellow_specular);
- glMaterialf(GL_FRONT, GL_SHININESS, 64.0);
- glEndList();
-
- glNewList(BLUEMAT, GL_COMPILE);
- glMaterialfv(GL_FRONT, GL_DIFFUSE, blue_diffuse);
- glMaterialfv(GL_FRONT, GL_SPECULAR, blue_specular);
- glMaterialf(GL_FRONT, GL_SHININESS, 45.0);
- glEndList();
-
- glLightfv(GL_LIGHT0, GL_POSITION, position_one);
-
- glEnable(GL_LIGHT0);
- glEnable(GL_LIGHTING);
- glDepthFunc(GL_LESS);
- glEnable(GL_DEPTH_TEST);
-
- glClearStencil(0x0);
- glEnable(GL_STENCIL_TEST);
-
- glClear(GL_STENCIL_BUFFER_BIT);
-
-/* create a diamond shaped stencil area */
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glOrtho(-3.0, 3.0, -3.0, 3.0, -1.0, 1.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- glStencilFunc (GL_ALWAYS, 0x1, 0x1);
- glStencilOp (GL_REPLACE, GL_REPLACE, GL_REPLACE);
- glBegin(GL_QUADS);
- glVertex3f (-1.0, 0.0, 0.0);
- glVertex3f (0.0, 1.0, 0.0);
- glVertex3f (1.0, 0.0, 0.0);
- glVertex3f (0.0, -1.0, 0.0);
- glEnd();
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(45.0, (GLfloat) w/(GLfloat) h, 3.0, 7.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -5.0);
- }
-
-/* Draw a sphere in a diamond-shaped section in the
- * middle of a window with 2 tori.
- */
-UGL_LOCAL void drawGL(void)
- {
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
-
-/* draw blue sphere where the stencil is 1 */
- glStencilFunc (GL_EQUAL, 0x1, 0x1);
- glCallList (BLUEMAT);
- glutSolidSphere (0.5, 15, 15);
-
-/* draw the tori where the stencil is not 1 */
- glStencilFunc (GL_NOTEQUAL, 0x1, 0x1);
- glPushMatrix();
- glRotatef (45.0, 0.0, 0.0, 1.0);
- glRotatef (45.0, 0.0, 1.0, 0.0);
- glCallList (YELLOWMAT);
- glutSolidTorus (0.275, 0.85, 15, 15);
- glPushMatrix();
- glRotatef (90.0, 1.0, 0.0, 0.0);
- glutSolidTorus (0.275, 0.85, 15, 15);
- glPopMatrix();
- glPopMatrix();
-
- glFlush();
-
- uglMesaSwapBuffers();
- }
-
-UGL_LOCAL int getEvent(void)
- {
- UGL_EVENT event;
- UGL_STATUS status;
- int retVal = 0;
-
- status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
-
- while (status != UGL_STATUS_Q_EMPTY)
- {
- UGL_INPUT_EVENT * pInputEvent = (UGL_INPUT_EVENT *)&event;
-
- if (pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
- retVal = 1;
-
- status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
- }
-
- return(retVal);
- }
-
-void windMLStencil (UGL_BOOL windMLMode);
-
-void uglstencil (void)
- {
- taskSpawn("tStencil", 210, VX_FP_TASK, 100000,
- (FUNCPTR)windMLStencil,UGL_FALSE,1,2,3,4,5,6,7,8,9);
- }
-
-void windMLStencil(UGL_BOOL windMLMode)
- {
- UGL_INPUT_DEVICE_ID keyboardDevId;
- GLsizei width, height;
-
- uglInitialize();
-
- uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId);
-
- uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, (UGL_UINT32 *)&eventServiceId);
-
- qId = uglEventQCreate (eventServiceId, 100);
-
- if (windMLMode)
- umc = uglMesaCreateNewContextExt(UGL_MESA_SINGLE
- | UGL_MESA_WINDML_EXCLUSIVE,
- 16,
- 8,
- 0,0,0,0,
- NULL);
- else
- umc = uglMesaCreateNewContextExt(UGL_MESA_SINGLE,
- 16,
- 8,
- 0,0,0,0,
- NULL);
-
- if (umc == NULL)
- {
- uglDeinitialize();
- return;
- }
-
- /* Fullscreen */
-
- uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH,
- UGL_MESA_FULLSCREEN_HEIGHT);
-
- uglMesaGetIntegerv(UGL_MESA_WIDTH, &width);
- uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height);
-
- initGL(width, height);
-
- drawGL();
-
- while (!getEvent());
-
- uglEventQDestroy (eventServiceId, qId);
-
- uglMesaDestroyContext();
- uglDeinitialize();
-
- return;
- }
-
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