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/*
* Mesa 3-D graphics library
* Version: 4.0
* Copyright (C) 1995-1998 Brian Paul
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* DOS/DJGPP glut driver v1.4 for Mesa
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@users.sourceforge.net
* Web : http://www.geocities.com/dborca
*/
#include <string.h>
#include "glutint.h"
#define DEFAULT_WIDTH 300
#define DEFAULT_HEIGHT 300
#define DEFAULT_BPP 16
#define ALPHA_SIZE 8
#define DEPTH_SIZE 16
#define STENCIL_SIZE 8
#define ACCUM_SIZE 16
GLuint g_bpp = DEFAULT_BPP;
GLuint g_alpha = ALPHA_SIZE;
GLuint g_depth = DEPTH_SIZE;
GLuint g_stencil = STENCIL_SIZE;
GLuint g_accum = ACCUM_SIZE;
GLuint g_refresh = 0;
GLuint g_screen_w, g_screen_h;
GLint g_driver_caps;
GLuint g_fps = 0;
GLuint g_display_mode = 0;
int g_init_x = 0, g_init_y = 0;
GLuint g_init_w = DEFAULT_WIDTH, g_init_h = DEFAULT_HEIGHT;
char *__glutProgramName = NULL;
void APIENTRY glutInit (int *argc, char **argv)
{
char *str;
const char *env;
if ((env = getenv("DMESA_GLUT_BPP")) != NULL) {
g_bpp = atoi(env);
}
if ((env = getenv("DMESA_GLUT_ALPHA")) != NULL) {
g_alpha = atoi(env);
}
if ((env = getenv("DMESA_GLUT_DEPTH")) != NULL) {
g_depth = atoi(env);
}
if ((env = getenv("DMESA_GLUT_STENCIL")) != NULL) {
g_stencil = atoi(env);
}
if ((env = getenv("DMESA_GLUT_ACCUM")) != NULL) {
g_accum = atoi(env);
}
if ((env = getenv("DMESA_GLUT_REFRESH")) != NULL) {
g_refresh = atoi(env);
}
/* Determine program name. */
str = strrchr(argv[0], '/');
if (str == NULL) {
str = argv[0];
} else {
str++;
}
__glutProgramName = __glutStrdup(str);
/* check if GLUT_FPS env var is set */
if ((env = getenv("GLUT_FPS")) != NULL) {
if ((g_fps = atoi(env)) <= 0) {
g_fps = 5000; /* 5000 milliseconds */
}
}
/* Initialize timer */
glutGet(GLUT_ELAPSED_TIME);
}
void APIENTRY glutInitDisplayMode (unsigned int mode)
{
g_display_mode = mode;
}
void APIENTRY glutInitWindowPosition (int x, int y)
{
g_init_x = x;
g_init_y = y;
}
void APIENTRY glutInitWindowSize (int width, int height)
{
g_init_w = width;
g_init_h = height;
}
#define DO_REDISPLAY(w, ccin, ccout) \
do { \
if (w->redisplay && w->display) { \
int rv = GL_TRUE; \
\
idle = GL_FALSE; \
w->redisplay = GL_FALSE; \
\
/* test IN condition (whether we need to `MakeCurrent') */\
if (ccin) { \
rv = DMesaMakeCurrent(w->context, w->buffer); \
} \
\
/* do the display only if `MakeCurrent' didn't failed */ \
if (rv) { \
if (w->show_mouse && !(g_display_mode & GLUT_DOUBLE)) {\
/* XXX scare mouse */ \
w->display(); \
/* XXX unscare mouse */ \
} else { \
w->display(); \
} \
\
/* update OUT condition */ \
ccout; \
} \
} \
} while (0)
void APIENTRY glutMainLoop (void)
{
int i, n;
GLUTwindow *w;
GLboolean idle;
static int old_mouse_x = 0;
static int old_mouse_y = 0;
static int old_mouse_b = 0;
{
GLint screen_size[2];
DMesaGetIntegerv(DMESA_GET_SCREEN_SIZE, screen_size);
g_screen_w = screen_size[0];
g_screen_h = screen_size[1];
DMesaGetIntegerv(DMESA_GET_DRIVER_CAPS, &g_driver_caps);
}
pc_install_keyb();
__glutInitMouse();
for (i = 0; i < MAX_WINDOWS; i++) {
w = g_windows[i];
if (w != NULL) {
glutSetWindow(w->num);
glutPostRedisplay();
if (w->reshape) {
w->reshape(w->width, w->height);
}
if (w->visibility) {
w->visibility(GLUT_VISIBLE);
}
}
}
while (GL_TRUE) {
idle = GL_TRUE;
n = 0;
for (i = 0; i < MAX_WINDOWS; i++) {
w = g_windows[i];
if ((w != NULL) && (w != g_curwin)) {
/* 1) redisplay `w'
* 2) `MakeCurrent' always
* 3) update number of non-default windows
*/
DO_REDISPLAY(w, GL_TRUE, n++);
}
}
/* 1) redisplay `g_curwin'
* 2) `MakeCurrent' only if we previously did non-default windows
* 3) don't update anything
*/
DO_REDISPLAY(g_curwin, n, n);
if (g_mouse) {
int mouse_x;
int mouse_y;
int mouse_z;
int mouse_b;
/* query mouse */
mouse_b = pc_query_mouse(&mouse_x, &mouse_y, &mouse_z);
/* relative to window coordinates */
g_mouse_x = mouse_x - g_curwin->xpos;
g_mouse_y = mouse_y - g_curwin->ypos;
/* mouse was moved? */
if ((mouse_x != old_mouse_x) || (mouse_y != old_mouse_y)) {
idle = GL_FALSE;
old_mouse_x = mouse_x;
old_mouse_y = mouse_y;
if (mouse_b) {
/* any button pressed */
if (g_curwin->motion) {
g_curwin->motion(g_mouse_x, g_mouse_y);
}
} else {
/* no button pressed */
if (g_curwin->passive) {
g_curwin->passive(g_mouse_x, g_mouse_y);
}
}
}
/* button state changed? */
if (mouse_b != old_mouse_b) {
GLUTmouseCB mouse_func;
if ((mouse_func = g_curwin->mouse)) {
if ((old_mouse_b & 1) && !(mouse_b & 1))
mouse_func(GLUT_LEFT_BUTTON, GLUT_UP, g_mouse_x, g_mouse_y);
else if (!(old_mouse_b & 1) && (mouse_b & 1))
mouse_func(GLUT_LEFT_BUTTON, GLUT_DOWN, g_mouse_x, g_mouse_y);
if ((old_mouse_b & 2) && !(mouse_b & 2))
mouse_func(GLUT_RIGHT_BUTTON, GLUT_UP, g_mouse_x, g_mouse_y);
else if (!(old_mouse_b & 2) && (mouse_b & 2))
mouse_func(GLUT_RIGHT_BUTTON, GLUT_DOWN, g_mouse_x, g_mouse_y);
if ((old_mouse_b & 4) && !(mouse_b & 4))
mouse_func(GLUT_MIDDLE_BUTTON, GLUT_UP, g_mouse_x, g_mouse_y);
else if (!(old_mouse_b & 3) && (mouse_b & 4))
mouse_func(GLUT_MIDDLE_BUTTON, GLUT_DOWN, g_mouse_x, g_mouse_y);
}
idle = GL_FALSE;
old_mouse_b = mouse_b;
}
}
if (pc_keypressed()) {
int key;
int glut_key;
idle = GL_FALSE;
key = pc_readkey();
switch (key>>16) {
case KEY_F1: glut_key = GLUT_KEY_F1; goto special;
case KEY_F2: glut_key = GLUT_KEY_F2; goto special;
case KEY_F3: glut_key = GLUT_KEY_F3; goto special;
case KEY_F4: glut_key = GLUT_KEY_F4; goto special;
case KEY_F5: glut_key = GLUT_KEY_F5; goto special;
case KEY_F6: glut_key = GLUT_KEY_F6; goto special;
case KEY_F7: glut_key = GLUT_KEY_F7; goto special;
case KEY_F8: glut_key = GLUT_KEY_F8; goto special;
case KEY_F9: glut_key = GLUT_KEY_F9; goto special;
case KEY_F10: glut_key = GLUT_KEY_F10; goto special;
case KEY_F11: glut_key = GLUT_KEY_F11; goto special;
case KEY_F12: glut_key = GLUT_KEY_F12; goto special;
case KEY_LEFT: glut_key = GLUT_KEY_LEFT; goto special;
case KEY_UP: glut_key = GLUT_KEY_UP; goto special;
case KEY_RIGHT: glut_key = GLUT_KEY_RIGHT; goto special;
case KEY_DOWN: glut_key = GLUT_KEY_DOWN; goto special;
case KEY_PGUP: glut_key = GLUT_KEY_PAGE_UP; goto special;
case KEY_PGDN: glut_key = GLUT_KEY_PAGE_DOWN; goto special;
case KEY_HOME: glut_key = GLUT_KEY_HOME; goto special;
case KEY_END: glut_key = GLUT_KEY_END; goto special;
case KEY_INSERT: glut_key = GLUT_KEY_INSERT; goto special;
special:
if (g_curwin->special) {
g_curwin->special(glut_key, g_mouse_x, g_mouse_y);
}
break;
default:
if (g_curwin->keyboard) {
g_curwin->keyboard(key & 0xFF, g_mouse_x, g_mouse_y);
}
}
}
if (idle && g_idle_func)
g_idle_func();
}
}
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