progs/windml/uglcube.c

   1 /* uglcube.c - WindML/Mesa example program */
   2
   3 /* Copyright (C) 2001 by Wind River Systems, Inc */
   4
   5 /*
   6  * Mesa 3-D graphics library
   7  * Version:  3.5
   8  *
   9  * The MIT License
  10  * Permission is hereby granted, free of charge, to any person obtaining a
  11  * copy of this software and associated documentation files (the "Software"),
  12  * to deal in the Software without restriction, including without limitation
  13  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14  * and/or sell copies of the Software, and to permit persons to whom the
  15  * Software is furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included
  18  * in all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23  * THE AUTHORS OR COPYRIGHT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  25  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  26  * DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 /*
  30 DESCRIPTION
  31 Draw a smooth cube.
  32 */
  33
  34 #include <stdio.h>
  35 #include <math.h>
  36
  37 #include <ugl/uglevent.h>
  38 #include <ugl/uglinput.h>
  39
  40 #include <GL/uglmesa.h>
  41 #include <GL/glu.h>
  42
  43 UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
  44 UGL_LOCAL UGL_EVENT_Q_ID qId;
  45 UGL_LOCAL UGL_MESA_CONTEXT umc;
  46 UGL_LOCAL GLfloat rotx;
  47 UGL_LOCAL GLfloat roty;
  48 UGL_LOCAL GLuint theCube;
  49
  50 UGL_LOCAL void cube()
  51     {
  52
  53     /* Front */
  54     glBegin(GL_QUADS);
  55     glColor3f(0.0f, 0.0f, 1.0f);
  56     glVertex3f(-1.0f, 1.0f, 1.0f);
  57     glColor3f(0.0f, 1.0f, 0.0f);
  58     glVertex3f(1.0f, 1.0f, 1.0f);
  59     glColor3f(1.0f, 0.0f, 0.0f);
  60     glVertex3f(1.0f, -1.0f, 1.0f);
  61     glColor3f(1.0f, 1.0f, 0.0f);
  62     glVertex3f(-1.0f, -1.0f, 1.0f);
  63     glEnd();
  64
  65
  66     /* Back */
  67     glBegin(GL_QUADS);
  68     glColor3f(0.0f, 0.0f, 1.0f);
  69     glVertex3f(-1.0f, 1.0f, -1.0f);
  70     glColor3f(0.0f, 1.0f, 0.0f);
  71     glVertex3f(1.0f, 1.0f, -1.0f);
  72     glColor3f(1.0f, 0.0f, 0.0f);
  73     glVertex3f(1.0f, -1.0f, -1.0f);
  74     glColor3f(1.0f, 1.0f, 0.0f);
  75     glVertex3f(-1.0f, -1.0f, -1.0f);
  76     glEnd();
  77
  78
  79     /* Right */
  80     glBegin(GL_QUADS);
  81     glColor3f(0.0f, 1.0f, 0.0f);
  82     glVertex3f(1.0f, 1.0f, 1.0f);
  83     glColor3f(0.0f, 1.0f, 0.0f);
  84     glVertex3f(1.0f, 1.0f, -1.0f);
  85     glColor3f(1.0f, 0.0f, 0.0f);
  86     glVertex3f(1.0f, -1.0f, -1.0f);
  87     glColor3f(1.0f, 0.0f, 0.0f);
  88     glVertex3f(1.0f, -1.0f, 1.0f);
  89     glEnd();
  90
  91     /* Left */
  92     glBegin(GL_QUADS);
  93     glColor3f(0.0f, 0.0f, 1.0f);
  94     glVertex3f(-1.0f, 1.0f, 1.0f);
  95     glColor3f(0.0f, 0.0f, 1.0f);
  96     glVertex3f(-1.0f, 1.0f, -1.0f);
  97     glColor3f(1.0f, 1.0f, 0.0f);
  98     glVertex3f(-1.0f, -1.0f, -1.0f);
  99     glColor3f(1.0f, 1.0f, 0.0f);
 100     glVertex3f(-1.0f, -1.0f, 1.0f);
 101     glEnd();
 102
 103     /* Top */
 104     glBegin(GL_QUADS);
 105     glColor3f(0.0f, 0.0f, 1.0f);
 106     glVertex3f(-1.0f, 1.0f, -1.0f);
 107     glColor3f(0.0f, 1.0f, 0.0f);
 108     glVertex3f(1.0f, 1.0f, -1.0f);
 109     glColor3f(0.0f, 1.0f, 0.0f);
 110     glVertex3f(1.0f, 1.0f, 1.0f);
 111     glColor3f(0.0f, 0.0f, 1.0f);
 112     glVertex3f(-1.0f, 1.0f, 1.0f);
 113     glEnd();
 114
 115
 116     /* Bottom */
 117     glBegin(GL_QUADS);
 118     glColor3f(1.0f, 1.0f, 0.0f);
 119     glVertex3f(-1.0f, -1.0f, -1.0f);
 120     glColor3f(1.0f, 0.0f, 0.0f);
 121     glVertex3f(1.0f, -1.0f, -1.0f);
 122     glColor3f(1.0f, 0.0f, 0.0f);
 123     glVertex3f(1.0f, -1.0f, 1.0f);
 124     glColor3f(1.0f, 1.0f, 0.0f);
 125     glVertex3f(-1.0f, -1.0f, 1.0f);
 126     glEnd();
 127     }
 128
 129 UGL_LOCAL void initGL
 130     (
 131     int Width,
 132     int Height
 133     )
 134     {
 135     glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
 136     glDepthFunc(GL_LESS);
 137     glEnable(GL_DEPTH_TEST);
 138     glShadeModel(GL_SMOOTH);
 139
 140     theCube = glGenLists(1);
 141     glNewList(theCube, GL_COMPILE);
 142     cube();
 143     glEndList();
 144
 145     glMatrixMode(GL_PROJECTION);
 146     glLoadIdentity();
 147     gluPerspective(45.0f, (GLfloat) Width / (GLfloat) Height, 0.1f, 100.0f);
 148     glMatrixMode(GL_MODELVIEW);
 149     glLoadIdentity();
 150     glTranslatef(0.0f, 0.0f, -6.0f);
 151     }
 152
 153
 154 /* The main drawing function. */
 155
 156 UGL_LOCAL void drawGL()
 157     {
 158
 159     /* Clear The Screen And The Depth Buffer */
 160
 161     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 162
 163     /* Rotate the cube */
 164
 165     glRotatef(rotx, 1.0f, 0.0f, 0.0f);
 166     glRotatef(roty, 0.0f, 1.0f, 0.0f);
 167
 168     glCallList(theCube);
 169
 170     glFlush();
 171
 172     uglMesaSwapBuffers();
 173     }
 174
 175
 176 /* The function called whenever a key is pressed. */
 177
 178 UGL_LOCAL int getEvent(void)
 179     {
 180     UGL_EVENT event;
 181     UGL_STATUS status;
 182     int retVal = 0;
 183
 184     status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
 185
 186     while (status != UGL_STATUS_Q_EMPTY)
 187         {
 188         UGL_INPUT_EVENT * pInputEvent = (UGL_INPUT_EVENT *)&event;
 189
 190         if (pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
 191             retVal = 1;
 192
 193         status = uglEventGet (qId, &event, sizeof (event), UGL_NO_WAIT);
 194         }
 195
 196     return(retVal);
 197     }
 198
 199 void windMLCube (UGL_BOOL windMLMode);
 200
 201 void uglcube (void)
 202     {
 203     taskSpawn("tCube", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLCube,
 204               UGL_FALSE,1,2,3,4,5,6,7,8,9);
 205     }
 206
 207 void windMLCube (UGL_BOOL windMLMode)
 208     {
 209     GLsizei width, height;
 210     UGL_INPUT_DEVICE_ID keyboardDevId;
 211
 212     rotx = 2.5f;
 213     roty = 1.0f;
 214
 215     uglInitialize();
 216
 217     uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId);
 218
 219     if (uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0,
 220                        (UGL_UINT32 *)&eventServiceId) == UGL_STATUS_OK)
 221         {
 222         qId = uglEventQCreate (eventServiceId, 100);
 223         }
 224     else
 225         {
 226         eventServiceId = UGL_NULL;
 227         }
 228
 229     if (windMLMode)
 230        umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE
 231                                      | UGL_MESA_WINDML_EXCLUSIVE, NULL);
 232     else
 233        umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE, NULL);
 234
 235     /* Fullscreen */
 236
 237     uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH,
 238                               UGL_MESA_FULLSCREEN_HEIGHT);
 239
 240     uglMesaGetIntegerv(UGL_MESA_WIDTH, &width);
 241     uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height);
 242
 243     /* Initialize our window. */
 244
 245     initGL(width, height);
 246
 247     while (!getEvent())
 248         drawGL();
 249
 250     if (eventServiceId != UGL_NULL)
 251         uglEventQDestroy (eventServiceId, qId);
 252
 253     uglMesaDestroyContext();
 254     uglDeinitialize();
 255
 256     return;
 257     }