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Diffstat (limited to 'progs/windml/uglpoint.c')
| -rw-r--r-- | progs/windml/uglpoint.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/progs/windml/uglpoint.c b/progs/windml/uglpoint.c new file mode 100644 index 00000000000..e184eaa7550 --- /dev/null +++ b/progs/windml/uglpoint.c @@ -0,0 +1,266 @@ + +/* uglpoint.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 <[email protected]> + */ + +/* +DESCRIPTION +Draw a single point. +*/ + +#include <stdio.h> +#include <math.h> + +#include <ugl/ugl.h> +#include <ugl/uglevent.h> +#include <ugl/uglinput.h> + +#include <GL/uglmesa.h> + +#define DOUBLE_BUFFER GL_TRUE + +enum { + BLACK = 0, + RED, + GREEN, + BLUE, + WHITE +}; + +UGL_LOCAL GLuint rgb; +UGL_LOCAL UGL_EVENT_SERVICE_ID eventServiceId; +UGL_LOCAL UGL_EVENT_Q_ID qId; +UGL_LOCAL UGL_MESA_CONTEXT umc; +UGL_LOCAL GLint angleT; + +UGL_LOCAL void initGL (void) + { + /* By passed in RGB mode */ + uglMesaSetColor(BLACK, 0.0, 0.0, 0.0); + uglMesaSetColor(RED, 1.0, 0.0, 0.0); + uglMesaSetColor(GREEN, 0.0, 1.0, 0.0); + uglMesaSetColor(BLUE, 0.0, 0.0, 1.0); + uglMesaSetColor(WHITE, 1.0, 1.0, 1.0); + + glOrtho(0.0, 1.0, 0.0, 1.0, -20.0, 20.0); + + glClearColor(0.0, 0.0, 0.0, 0.0); + glClearIndex(BLACK); + } + +UGL_LOCAL void drawGL (void) + { + GLint i; + GLfloat x, y; + + /* Avoid blinking in single buffer */ + + if (DOUBLE_BUFFER) + glClear(GL_COLOR_BUFFER_BIT); + + /* Random points */ + + glBegin(GL_POINTS); + (rgb) ? glColor3f(1.0, 0.0, 0.0): glIndexi(RED); + + for (i=0; i<150; i++) + { + x = rand() / (RAND_MAX+1.0); + y = rand() / (RAND_MAX+1.0); + glVertex2f(x, y); + } + + (rgb) ? glColor3f(0.0, 1.0, 0.0): glIndexi(GREEN); + + for (i=0; i<150; i++) + { + x = (rand() / (RAND_MAX+1.0)); + y = (rand() / (RAND_MAX+1.0)); + glVertex2f(x, y); + } + + (rgb) ? glColor3f(0.0, 0.0, 1.0): glIndexi(BLUE); + glVertex2f(0.5,0.5); + + for (i=0; i<150; i++) + { + x = rand() / (RAND_MAX+1.0); + y = rand() / (RAND_MAX+1.0); + glVertex2f(x, y); + } + + glEnd(); + + /* Smooth triangle */ + + glPushMatrix(); + glTranslatef(0.5, 0.5, 0); + glRotatef(angleT, 1.0, -1.0, 0.0); + angleT = angleT++ % 360; + glBegin(GL_TRIANGLES); + (rgb) ? glColor3f(1.0, 0.0, 0.0): glIndexi(RED); + glVertex2f(0.75, 0.25); + (rgb) ? glColor3f(0.0, 1.0, 0.0): glIndexi(GREEN); + glVertex2f(0.75, 0.75); + (rgb) ? glColor3f(0.0, 0.0, 1.0): glIndexi(BLUE); + glVertex2f(0.25, 0.75); + glEnd(); + glPopMatrix(); + + /* Flush and swap */ + + glFlush(); + + if(DOUBLE_BUFFER) + uglMesaSwapBuffers(); + } + +/************************************************************************ +* +* getEvent +* +* RETURNS: true or false +* +* NOMANUAL +* +*/ + +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 windMLPoint (void); + +void uglpoint (void) + { + taskSpawn("tPoint", 210, VX_FP_TASK, 100000, + (FUNCPTR)windMLPoint, 0,1,2,3,4,5,6,7,8,9); + } + +void windMLPoint(void) + { + GLubyte pPixels[4]; + GLsizei width, height; + UGL_INPUT_DEVICE_ID keyboardDevId; + + angleT = 0; + + uglInitialize(); + + uglDriverFind (UGL_KEYBOARD_TYPE, 0, (UGL_UINT32 *)&keyboardDevId); + + if (uglDriverFind (UGL_EVENT_SERVICE_TYPE, 0, + (UGL_UINT32 *)&eventServiceId) == UGL_STATUS_OK) + { + qId = uglEventQCreate (eventServiceId, 100); + } + else + { + eventServiceId = UGL_NULL; + } + + if (DOUBLE_BUFFER) + umc = uglMesaCreateNewContext(UGL_MESA_DOUBLE, NULL); + else + umc = uglMesaCreateNewContext(UGL_MESA_SINGLE, NULL); + + if (umc == NULL) + { + uglDeinitialize(); + return; + } + + /* Fullscreen */ + + uglMesaMakeCurrentContext(umc, 0, 0, UGL_MESA_FULLSCREEN_WIDTH, + UGL_MESA_FULLSCREEN_HEIGHT); + + /* RGB or CI ? */ + + uglMesaGetIntegerv(UGL_MESA_RGB, &rgb); + + initGL(); + + while (!getEvent()) + drawGL(); + + uglMesaGetIntegerv(UGL_MESA_WIDTH, &width); + uglMesaGetIntegerv(UGL_MESA_HEIGHT, &height); + + printf ("glReadPixel return "); + if (rgb) + { + glReadPixels(width/2, height/2, + 1, 1, GL_RGB, + GL_UNSIGNED_BYTE, pPixels); + glFlush(); + printf ("R:%i G:%i B:%i (RGB)", pPixels[0], pPixels[1], pPixels[2]); + } + else + { + glReadPixels(width/2, height/2, + 1, 1, GL_COLOR_INDEX, + GL_UNSIGNED_BYTE, pPixels); + glFlush(); + if (pPixels[0] == BLUE) + printf ("BLUE (CI)"); + else + printf ("%i (CI))", pPixels[0]); + } + + printf(" for %ix%i\n", width/2, height/2); + + if (eventServiceId != UGL_NULL) + uglEventQDestroy (eventServiceId, qId); + + uglMesaDestroyContext(); + uglDeinitialize(); + + return; + } |