int xf86_dga2_init(void)
{
int i,j ;
xf86ctx.screen = DefaultScreen(display);
if(!XDGAQueryVersion(display, &i, &j))
fprintf(stderr,"XDGAQueryVersion failed\n");
else if (i < 2)
fprintf(stderr,"This driver requires DGA 2.0 or newer\n");
else if(!XDGAQueryExtension(display, &i, &j))
fprintf(stderr,"XDGAQueryExtension failed\n");
else
{
/* Dumping core while DirectVideo is active causes an X-server
freeze with kernel 2.6, so don't dump core! */
struct rlimit limit = { 0, 0 };
if(setrlimit(RLIMIT_CORE, &limit))
perror("rlimit");
else if(!XDGAOpenFramebuffer(display,xf86ctx.screen))
fprintf(stderr,"XDGAOpenFramebuffer failed\n");
else
return SYSDEP_DISPLAY_FULLSCREEN|SYSDEP_DISPLAY_EFFECTS;
}
fprintf(stderr,"Use of DGA-modes is disabled\n");
return 0;
}
Bool XF86DGAQueryVersion(
Display* dpy,
int* majorVersion,
int* minorVersion
){
return XDGAQueryVersion(dpy, majorVersion, minorVersion);
}
static int
vinit( video_module_t *module )
{
int n, i, major, minor, mcount, nodga;
int (*old_ehandler)(Display*, XErrorEvent*);
Display *dis = x11.disp;
XDGAMode *mm;
video_desc_t *m;
memset( &dga, 0, sizeof(dga) );
if( !x11.connected || get_bool_res("enable_xdga_video")!=1 )
return 1;
nodga = !XDGAQueryExtension(dis, &dga.ev_base, &dga.err_base);
old_ehandler = XSetErrorHandler( dga_error_handler );
nodga = nodga || !XDGAQueryVersion(dis, &major, &minor);
XSetErrorHandler( old_ehandler );
if( nodga ) {
printm("X11 DGA is not available\n");
return 1;
}
if( major < MIN_MAJOR || (major == MIN_MAJOR && minor < MIN_MINOR) ) {
printm("Xserver is running DGA %d.%d (%d.%d is required)\n",
major, minor, MIN_MAJOR, MIN_MINOR );
return 1;
}
printm("Running X11 DGA %d.%d\n\n", major, minor );
if( !(mm=XDGAQueryModes(dis, x11.screen, &mcount)) ) {
printm("XDGAQueryModes failed\n");
return 1;
}
m = calloc( mcount, sizeof(video_desc_t) );
for( n=0, i=0; i<mcount; i++ ) {
int j, skip = 0;
char *s;
for( j=0; (s=get_str_res_ind("xdga_modes", 0, j)); j++ ) {
skip = 1;
if( i == strtol(s,NULL,0) )
break;
}
if( mm[i].visualClass != DirectColor /*&& mm[i].visualClass != PseudoColor*/ )
skip = 1;
if( mm[i].bitsPerPixel == 24 || mm[i].depth == 16 || mm[i].depth != x11.xdepth )
skip = 1;
if( s )
skip = 0;
printm(" %c Mode %d: \"%s\": %dx%d %2d (%dx%d) %.2f Hz %04x %d %d\n",
skip ? ' ' : '*', mm[i].num, mm[i].name,
mm[i].imageWidth, mm[i].imageHeight,
mm[i].depth, mm[i].pixmapWidth, mm[i].pixmapHeight,
mm[i].verticalRefresh,
/*mm[i].viewportWidth, mm[i].viewportHeight, */
mm[i].flags, mm[i].bytesPerScanline, mm[i].visualClass
);
if( skip )
continue;
/* add mode */
m[n].offs = 0; /* fixme! */
m[n].rowbytes = mm[i].bytesPerScanline;
m[n].w = mm[i].viewportWidth;
m[n].h = mm[i].viewportHeight;
m[n].depth = mm[i].depth;
m[n].refresh = (mm[i].verticalRefresh * 65536) + 0.5;
m[n].module_data = (void*)mm[i].num;
m[n].next = NULL;
if( n>0 )
m[n-1].next = &m[n];
n++;
}
printm("\n");
xdga_module.modes = &m[0];
XFree( mm );
add_key_actions( xdga_keys, sizeof(xdga_keys) );
dga.initialized = 1;
return 0;
}
/* _xdga2_gfxdrv_init_drv:
* Initializes driver and creates screen bitmap.
*/
static BITMAP *_xdga2_private_gfxdrv_init_drv(GFX_DRIVER *drv, int w, int h, int vw, int vh, int depth, int accel)
{
int dga_error_base, dga_major_version, dga_minor_version;
int mode, mask, red_shift = 0, green_shift = 0, blue_shift = 0;
long input_mask;
char tmp1[128], tmp2[128];
BITMAP *bmp;
/* This is just to test if the system driver has been installed properly */
if (_xwin.window == None)
return NULL;
/* Test that display is local. */
if (!_xdga2_private_display_is_local()) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("This driver needs local display"));
return NULL;
}
/* Choose convenient size. */
if ((w == 0) && (h == 0)) {
w = 640;
h = 480;
}
if ((w < 80) || (h < 80) || (w > 4096) || (h > 4096)) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Unsupported screen size"));
return NULL;
}
if (vw < w)
vw = w;
if (vh < h)
vh = h;
if (1
#ifdef ALLEGRO_COLOR8
&& (depth != 8)
#endif
#ifdef ALLEGRO_COLOR16
&& (depth != 15)
&& (depth != 16)
#endif
#ifdef ALLEGRO_COLOR24
&& (depth != 24)
#endif
#ifdef ALLEGRO_COLOR32
&& (depth != 32)
#endif
) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Unsupported color depth"));
return NULL;
}
/* Checks presence of DGA extension */
if (!XDGAQueryExtension(_xwin.display, &dga_event_base, &dga_error_base) ||
!XDGAQueryVersion(_xwin.display, &dga_major_version, &dga_minor_version)) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("DGA extension is not supported"));
return NULL;
}
/* Works only with DGA 2.0 or newer */
if (dga_major_version < 2) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("DGA 2.0 or newer is required"));
return NULL;
}
/* Attempts to access the framebuffer */
if (!XDGAOpenFramebuffer(_xwin.display, _xwin.screen)) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Can not open framebuffer"));
return NULL;
}
/* Finds suitable video mode number */
mode = _xdga2_find_mode(w, h, vw, vh, depth);
if (!mode) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Resolution not supported"));
return NULL;
}
/* Sets DGA video mode */
dga_device = XDGASetMode(_xwin.display, _xwin.screen, mode);
if (dga_device == NULL) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Can not switch to DGA mode"));
return NULL;
}
_xwin.in_dga_mode = 2;
_set_current_refresh_rate(dga_device->mode.verticalRefresh);
set_display_switch_mode(SWITCH_NONE);
/* Installs DGA color map */
if (_dga_cmap) {
XFreeColormap(_xwin.display, _dga_cmap);
_dga_cmap = 0;
}
if ((dga_device->mode.visualClass == PseudoColor)
|| (dga_device->mode.visualClass == GrayScale)
|| (dga_device->mode.visualClass == DirectColor))
_dga_cmap = XDGACreateColormap(_xwin.display, _xwin.screen, dga_device, AllocAll);
else
_dga_cmap = XDGACreateColormap(_xwin.display, _xwin.screen, dga_device, AllocNone);
XDGAInstallColormap(_xwin.display, _xwin.screen, _dga_cmap);
/* Sets up direct color shifts */
if (depth != 8) {
for (mask = dga_device->mode.redMask, red_shift = 0; (mask & 1) == 0;
mask >>= 1, red_shift++);
for (mask = dga_device->mode.greenMask, green_shift = 0; (mask & 1) == 0;
mask >>= 1, green_shift++);
for (mask = dga_device->mode.blueMask, blue_shift = 0; (mask & 1) == 0;
mask >>= 1, blue_shift++);
}
switch (depth) {
case 15:
_rgb_r_shift_15 = red_shift;
_rgb_g_shift_15 = green_shift;
_rgb_b_shift_15 = blue_shift;
break;
case 16:
_rgb_r_shift_16 = red_shift;
_rgb_g_shift_16 = green_shift;
_rgb_b_shift_16 = blue_shift;
break;
case 24:
_rgb_r_shift_24 = red_shift;
_rgb_g_shift_24 = green_shift;
_rgb_b_shift_24 = blue_shift;
break;
case 32:
_rgb_r_shift_32 = red_shift;
_rgb_g_shift_32 = green_shift;
_rgb_b_shift_32 = blue_shift;
break;
}
/* Enables input */
XSync(_xwin.display, True);
input_mask = KeyPressMask | KeyReleaseMask | ButtonPressMask
| ButtonReleaseMask | PointerMotionMask;
XDGASelectInput(_xwin.display, _xwin.screen, input_mask);
if (_xwin_keyboard_focused) {
(*_xwin_keyboard_focused)(FALSE, 0);
keyboard_got_focus = TRUE;
}
_mouse_on = TRUE;
/* Creates screen bitmap */
drv->linear = TRUE;
bmp = _make_bitmap(dga_device->mode.imageWidth, dga_device->mode.imageHeight,
(uintptr_t)dga_device->data, drv, depth,
dga_device->mode.bytesPerScanline);
if (!bmp) {
ustrzcpy(allegro_error, ALLEGRO_ERROR_SIZE, get_config_text("Not enough memory"));
return NULL;
}
drv->w = bmp->cr = w;
drv->h = bmp->cb = h;
drv->vid_mem = dga_device->mode.imageWidth * dga_device->mode.imageHeight
* BYTES_PER_PIXEL(depth);
if (accel) {
/* Hardware acceleration has been requested */
/* Updates line switcher to accommodate framebuffer synchronization */
#ifdef ALLEGRO_NO_ASM
bmp->write_bank = _xdga2_write_line;
bmp->read_bank = _xdga2_write_line;
#else
bmp->write_bank = _xdga2_write_line_asm;
bmp->read_bank = _xdga2_write_line_asm;
#endif
_screen_vtable.acquire = _xdga2_acquire;
/* Checks for hardware acceleration support */
if (dga_device->mode.flags & XDGASolidFillRect) {
/* XDGAFillRectangle is available */
_orig_hline = _screen_vtable.hline;
_orig_vline = _screen_vtable.vline;
_orig_rectfill = _screen_vtable.rectfill;
_screen_vtable.hline = _xaccel_hline;
_screen_vtable.vline = _xaccel_vline;
_screen_vtable.rectfill = _xaccel_rectfill;
_screen_vtable.clear_to_color = _xaccel_clear_to_color;
gfx_capabilities |= (GFX_HW_HLINE | GFX_HW_FILL);
}
if (dga_device->mode.flags & XDGABlitRect) {
/* XDGACopyArea is available */
_screen_vtable.blit_to_self = _xaccel_blit_to_self;
_screen_vtable.blit_to_self_forward = _xaccel_blit_to_self;
_screen_vtable.blit_to_self_backward = _xaccel_blit_to_self;
gfx_capabilities |= GFX_HW_VRAM_BLIT;
}
if (dga_device->mode.flags & XDGABlitTransRect) {
/* XDGACopyTransparentArea is available */
_orig_draw_sprite = _screen_vtable.draw_sprite;
_orig_masked_blit = _screen_vtable.masked_blit;
_screen_vtable.masked_blit = _xaccel_masked_blit;
_screen_vtable.draw_sprite = _xaccel_draw_sprite;
if (_screen_vtable.color_depth == 8)
_screen_vtable.draw_256_sprite = _xaccel_draw_sprite;
gfx_capabilities |= GFX_HW_VRAM_BLIT_MASKED;
}
RESYNC();
}
/* Checks for triple buffering */
if (dga_device->mode.viewportFlags & XDGAFlipRetrace)
gfx_capabilities |= GFX_CAN_TRIPLE_BUFFER;
/* Sets up driver description */
uszprintf(_xdga2_driver_desc, sizeof(_xdga2_driver_desc),
uconvert_ascii("X-Windows DGA 2.0 graphics%s", tmp1),
uconvert_ascii(accel ? (gfx_capabilities ? " (accelerated)" : "") : " (software only)", tmp2));
drv->desc = _xdga2_driver_desc;
return bmp;
}
