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/*
* DOS/DJGPP Mesa Utility Toolkit
* Version: 1.0
*
* Copyright (C) 2005 Daniel Borca All Rights Reserved.
*
* 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
* DANIEL BORCA 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.
*/
#include <stdio.h>
#include "internal.h"
#define FREQUENCY 100 /* set this to zero to use the default timer */
static int timer_installed;
#if FREQUENCY
static volatile int ticks;
static void
ticks_timer (void *p)
{
(void)p;
ticks++;
} ENDOFUNC(ticks_timer)
#else
#include <time.h>
static struct timeval then;
#endif
int APIENTRY
glutGet (GLenum type)
{
switch (type) {
case GLUT_WINDOW_X:
return _glut_current->xpos;
case GLUT_WINDOW_Y:
return _glut_current->ypos;
case GLUT_WINDOW_WIDTH:
return _glut_current->width;
case GLUT_WINDOW_HEIGHT:
return _glut_current->height;
case GLUT_WINDOW_STENCIL_SIZE:
return _glut_visual.stencil;
case GLUT_WINDOW_DEPTH_SIZE:
return _glut_visual.depth;
case GLUT_WINDOW_RGBA:
return !(_glut_default.mode & GLUT_INDEX);
case GLUT_WINDOW_COLORMAP_SIZE:
return (_glut_default.mode & GLUT_INDEX) ? (256 - RESERVED_COLORS) : 0;
case GLUT_SCREEN_WIDTH:
return _glut_visual.geometry[0];
case GLUT_SCREEN_HEIGHT:
return _glut_visual.geometry[1];
case GLUT_INIT_WINDOW_X:
return _glut_default.x;
case GLUT_INIT_WINDOW_Y:
return _glut_default.y;
case GLUT_INIT_WINDOW_WIDTH:
return _glut_default.width;
case GLUT_INIT_WINDOW_HEIGHT:
return _glut_default.height;
case GLUT_INIT_DISPLAY_MODE:
return _glut_default.mode;
case GLUT_ELAPSED_TIME:
#if FREQUENCY
if (!timer_installed) {
timer_installed = GL_TRUE;
LOCKDATA(ticks);
LOCKFUNC(ticks_timer);
pc_install_int(ticks_timer, NULL, FREQUENCY);
}
return ticks * 1000 / FREQUENCY;
#else
if (!timer_installed) {
timer_installed = GL_TRUE;
gettimeofday(&then, NULL);
return 0;
} else {
struct timeval now;
gettimeofday(&now, NULL);
return (now.tv_usec - then.tv_usec) / 1000 +
(now.tv_sec - then.tv_sec) * 1000;
}
#endif
default:
return -1;
}
}
int APIENTRY
glutDeviceGet (GLenum type)
{
switch (type) {
case GLUT_HAS_KEYBOARD:
return GL_TRUE;
case GLUT_HAS_MOUSE:
return (_glut_mouse != 0);
case GLUT_NUM_MOUSE_BUTTONS:
return _glut_mouse;
case GLUT_HAS_SPACEBALL:
case GLUT_HAS_DIAL_AND_BUTTON_BOX:
case GLUT_HAS_TABLET:
return GL_FALSE;
case GLUT_NUM_SPACEBALL_BUTTONS:
case GLUT_NUM_BUTTON_BOX_BUTTONS:
case GLUT_NUM_DIALS:
case GLUT_NUM_TABLET_BUTTONS:
return 0;
default:
return -1;
}
}
int APIENTRY
glutGetModifiers (void)
{
int mod = 0;
int shifts = pc_keyshifts();
if (shifts & (KB_SHIFT_FLAG | KB_CAPSLOCK_FLAG)) {
mod |= GLUT_ACTIVE_SHIFT;
}
if (shifts & KB_ALT_FLAG) {
mod |= GLUT_ACTIVE_ALT;
}
if (shifts & KB_CTRL_FLAG) {
mod |= GLUT_ACTIVE_CTRL;
}
return mod;
}
void APIENTRY
glutReportErrors (void)
{
/* reports all the OpenGL errors that happened till now */
}
/* GAME MODE
* Hack alert: incomplete... what is GameMode, anyway?
*/
static GLint game;
static GLboolean game_possible;
static GLboolean game_active;
static GLuint game_width;
static GLuint game_height;
static GLuint game_bpp;
static GLuint game_refresh;
void APIENTRY
glutGameModeString (const char *string)
{
if (sscanf(string, "%ux%u:%u@%u", &game_width, &game_height, &game_bpp, &game_refresh) == 4) {
game_possible = GL_TRUE;
}
}
int APIENTRY
glutGameModeGet (GLenum mode)
{
switch (mode) {
case GLUT_GAME_MODE_ACTIVE:
return game_active;
case GLUT_GAME_MODE_POSSIBLE:
return game_possible && !_glut_current;
case GLUT_GAME_MODE_WIDTH:
return game_active ? (int)game_width : -1;
case GLUT_GAME_MODE_HEIGHT:
return game_active ? (int)game_height : -1;
case GLUT_GAME_MODE_PIXEL_DEPTH:
return game_active ? (int)game_bpp : -1;
case GLUT_GAME_MODE_REFRESH_RATE:
return game_active ? (int)game_refresh : -1;
default:
return -1;
}
}
int APIENTRY
glutEnterGameMode (void)
{
if (glutGameModeGet(GLUT_GAME_MODE_POSSIBLE)) {
_glut_visual.bpp = game_bpp;
_glut_visual.refresh = game_refresh;
glutInitWindowSize(game_width, game_height);
if ((game = glutCreateWindow("<game>")) > 0) {
game_active = GL_TRUE;
}
return game;
} else {
return 0;
}
}
void GLUTAPIENTRY
glutLeaveGameMode (void)
{
if (glutGameModeGet(GLUT_GAME_MODE_ACTIVE)) {
game_active = GL_FALSE;
glutDestroyWindow(game);
}
}
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