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/* uglflip.c - WindML/Mesa example program */
/* Copyright (C) 2001 by Wind River Systems, Inc */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* The MIT License
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* Authors:
* Stephane Raimbault <stephane.raimbault@windriver.com>
*/
/*
DESCRIPTION
Draw a triangle and flip the screen
*/
#include <stdio.h>
#include <math.h>
#include <ugl/ugl.h>
#include <ugl/uglucode.h>
#include <ugl/uglevent.h>
#include <ugl/uglinput.h>
#include <GL/uglmesa.h>
#include <GL/glu.h>
#define BLACK (0)
#define RED (1)
#define GREEN (2)
#define BLUE (3)
#define CI_OFFSET 4
UGL_LOCAL GLuint rgb;
UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId;
UGL_LOCAL UGL_EVENT_Q_ID qId;
UGL_LOCAL volatile UGL_BOOL stopWex;
UGL_LOCAL UGL_MESA_CONTEXT umc;
UGL_LOCAL void initGL (void)
{
uglMesaSetColor(BLACK, 0.0, 0.0, 0.0);
uglMesaSetColor(RED, 1.0, 0.3, 0.3);
uglMesaSetColor(GREEN, 0.3, 1.0, 0.3);
uglMesaSetColor(BLUE, 0.3, 0.3, 1.0);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClearIndex(BLACK);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
}
UGL_LOCAL void drawGL (void)
{
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLES);
(rgb) ? glColor3f(1.0, 0.3, 0.3) : glIndexi(RED);
glVertex2f(0.75, -0.50);
(rgb) ? glColor3f(0.3, 1.0, 0.3) : glIndexi(GREEN);
glVertex2f(0.0, 0.75);
(rgb) ? glColor3f(0.3, 0.3, 1.0) : glIndexi(BLUE);
glVertex2f(-0.75, -0.50);
glEnd();
glBegin(GL_LINES);
(rgb) ? glColor3f(1.0, 0.3, 0.3) : glIndexi(RED);
glVertex2f(-1.0, 1.0);
(rgb) ? glColor3f(0.3, 0.3, 1.0) : glIndexi(BLUE);
glVertex2f(1.0, -1.0);
glEnd();
glFlush();
uglMesaSwapBuffers();
}
UGL_LOCAL void echoUse(void)
{
printf("tFlip keys:\n");
printf(" d Toggle dithering\n");
printf(" up Reduce the window\n");
printf(" down Enlarge the window\n");
printf(" page up Y==0 is the bottom line and increases upward\n");
printf(" page down Y==0 is the bottom line and increases downward\n");
printf(" ESC Exit\n");
}
UGL_LOCAL void readKey (UGL_WCHAR key)
{
switch(key)
{
case UGL_UNI_UP_ARROW:
uglMesaResizeWindow(8, 8);
break;
case UGL_UNI_DOWN_ARROW:
glDrawBuffer(GL_FRONT_LEFT);
glClear(GL_COLOR_BUFFER_BIT);
glDrawBuffer(GL_BACK_LEFT);
uglMesaResizeWindow(-8, -8);
break;
case UGL_UNI_PAGE_UP:
uglMesaPixelStore(UGL_MESA_Y_UP, GL_TRUE);
break;
case UGL_UNI_PAGE_DOWN:
uglMesaPixelStore(UGL_MESA_Y_UP, GL_FALSE);
break;
case UGL_UNI_ESCAPE:
stopWex = UGL_TRUE;
break;
case 'd':
if (glIsEnabled(GL_DITHER))
glDisable(GL_DITHER);
else
glEnable(GL_DITHER);
break;
}
}
UGL_LOCAL void loopEvent(void)
{
UGL_EVENT event;
UGL_INPUT_EVENT * pInputEvent;
drawGL();
UGL_FOREVER
{
if (uglEventGet (qId, &event, sizeof (event), UGL_WAIT_FOREVER)
!= UGL_STATUS_Q_EMPTY)
{
pInputEvent = (UGL_INPUT_EVENT *)&event;
if (pInputEvent->header.type == UGL_EVENT_TYPE_KEYBOARD &&
pInputEvent->modifiers & UGL_KEYBOARD_KEYDOWN)
{
readKey(pInputEvent->type.keyboard.key);
drawGL();
}
}
if (stopWex)
break;
}
}
void windMLFlip (UGL_BOOL windMLMode);
void uglflip (void)
{
taskSpawn ("tFlip", 210, VX_FP_TASK, 100000, (FUNCPTR)windMLFlip,
UGL_FALSE,1,2,3,4,5,6,7,8,9);
}
void windMLFlip (UGL_BOOL windMLMode)
{
UGL_INPUT_DEVICE_ID keyboardDevId;
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 = uglMesaCreateNewContext(UGL_MESA_SINGLE
| UGL_MESA_WINDML_EXCLUSIVE, NULL);
else
umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE_SOFTWARE, NULL);
if (umc == NULL)
{
uglDeinitialize();
return;
}
uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH,
UGL_MESA_FULLSCREEN_HEIGHT);
uglMesaGetIntegerv(UGL_MESA_RGB, &rgb);
initGL();
echoUse();
stopWex = UGL_FALSE;
loopEvent();
uglEventQDestroy (eventServiceId, qId);
uglMesaDestroyContext();
uglDeinitialize();
return;
}
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