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/*
* Mesa 3-D graphics library
* Version: 6.5
* Copyright (C) 1995-2006 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.
*/
/*
* Library for glut using mesa fbdev driver
*
* Written by Sean D'Epagnier (c) 2006
*/
#include <string.h>
#include <sys/time.h>
#include <linux/fb.h>
#include <GL/glut.h>
#include "../../mesa/main/config.h"
#include "internal.h"
int AccumSize = 16; /* per channel size of accumulation buffer */
int DepthSize = DEFAULT_SOFTWARE_DEPTH_BITS;
int StencilSize = STENCIL_BITS;
int NumSamples = 4;
int glutGet(GLenum state)
{
switch(state) {
case GLUT_WINDOW_X:
return 0;
case GLUT_WINDOW_Y:
return 0;
case GLUT_INIT_WINDOW_WIDTH:
case GLUT_WINDOW_WIDTH:
case GLUT_SCREEN_WIDTH:
return VarInfo.xres;
case GLUT_INIT_WINDOW_HEIGHT:
case GLUT_WINDOW_HEIGHT:
case GLUT_SCREEN_HEIGHT:
return VarInfo.yres;
case GLUT_WINDOW_BUFFER_SIZE:
return VarInfo.bits_per_pixel;
case GLUT_WINDOW_STENCIL_SIZE:
return StencilSize;
case GLUT_WINDOW_DEPTH_SIZE:
return DepthSize;
case GLUT_WINDOW_RED_SIZE:
return VarInfo.red.length;
case GLUT_WINDOW_GREEN_SIZE:
return VarInfo.green.length;
case GLUT_WINDOW_BLUE_SIZE:
return VarInfo.green.length;
case GLUT_WINDOW_ALPHA_SIZE:
return VarInfo.transp.length;
case GLUT_WINDOW_ACCUM_RED_SIZE:
case GLUT_WINDOW_ACCUM_GREEN_SIZE:
case GLUT_WINDOW_ACCUM_BLUE_SIZE:
case GLUT_WINDOW_ACCUM_ALPHA_SIZE:
return AccumSize;
case GLUT_WINDOW_DOUBLEBUFFER:
if(DisplayMode & GLUT_DOUBLE)
return 1;
return 0;
case GLUT_WINDOW_RGBA:
if(DisplayMode & GLUT_INDEX)
return 0;
return 1;
case GLUT_WINDOW_PARENT:
return 0;
case GLUT_WINDOW_NUM_CHILDREN:
return 0;
case GLUT_WINDOW_COLORMAP_SIZE:
if(DisplayMode & GLUT_INDEX)
return 256;
return 0;
case GLUT_WINDOW_NUM_SAMPLES:
return NumSamples;
case GLUT_WINDOW_STEREO:
return 0;
case GLUT_WINDOW_CURSOR:
return CurrentCursor;
case GLUT_SCREEN_WIDTH_MM:
return VarInfo.width;
case GLUT_SCREEN_HEIGHT_MM:
return VarInfo.height;
case GLUT_MENU_NUM_ITEMS:
if(CurrentMenu)
return Menus[CurrentMenu].NumItems;
return 0;
case GLUT_DISPLAY_MODE_POSSIBLE:
if((DisplayMode & GLUT_MULTISAMPLE)
|| (DisplayMode & GLUT_STEREO)
|| (DisplayMode & GLUT_LUMINANCE)
|| (DisplayMode & GLUT_ALPHA) && (DisplayMode & GLUT_INDEX))
return 0;
return 1;
case GLUT_INIT_DISPLAY_MODE:
return DisplayMode;
case GLUT_INIT_WINDOW_X:
case GLUT_INIT_WINDOW_Y:
return 0;
case GLUT_ELAPSED_TIME:
{
static struct timeval tv;
gettimeofday(&tv, 0);
return 1000 * (tv.tv_sec - StartTime.tv_sec)
+ (tv.tv_usec - StartTime.tv_usec) / 1000;
}
}
return -1;
}
int glutLayerGet(GLenum info)
{
switch(info) {
case GLUT_OVERLAY_POSSIBLE:
return 0;
case GLUT_LAYER_IN_USE:
return GLUT_NORMAL;
case GLUT_HAS_OVERLAY:
return 0;
case GLUT_TRANSPARENT_INDEX:
return -1;
case GLUT_NORMAL_DAMAGED:
return Redisplay;
case GLUT_OVERLAY_DAMAGED:
return -1;
}
return -1;
}
int glutDeviceGet(GLenum info)
{
switch(info) {
case GLUT_HAS_KEYBOARD:
return ConsoleFD != -1 ? 1 : 0;
case GLUT_HAS_MOUSE:
case GLUT_NUM_MOUSE_BUTTONS:
return NumMouseButtons;
case GLUT_HAS_SPACEBALL:
case GLUT_HAS_DIAL_AND_BUTTON_BOX:
case GLUT_HAS_TABLET:
return 0;
case GLUT_NUM_SPACEBALL_BUTTONS:
case GLUT_NUM_BUTTON_BOX_BUTTONS:
case GLUT_NUM_DIALS:
case GLUT_NUM_TABLET_BUTTONS:
return 0;
case GLUT_DEVICE_IGNORE_KEY_REPEAT:
return KeyRepeatMode == GLUT_KEY_REPEAT_OFF;
case GLUT_DEVICE_KEY_REPEAT:
return KeyRepeatMode;
case GLUT_JOYSTICK_POLL_RATE:
case GLUT_HAS_JOYSTICK:
case GLUT_JOYSTICK_BUTTONS:
case GLUT_JOYSTICK_AXES:
return 0;
}
return -1;
}
int glutGetModifiers(void){
return KeyboardModifiers;
}
int glutExtensionSupported(const char *extension)
{
const char *exts = (const char *) glGetString(GL_EXTENSIONS);
const char *start = exts;
int len = strlen(extension);
for(;;) {
const char *p = strstr(exts, extension);
if(!p)
break;
if((p == start || p[-1] == ' ') && (p[len] == ' ' || p[len] == 0))
return 1;
exts = p + len;
}
return 0;
}
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