/* This name doesn't really cover this function, since it also sets up mouse
and keyboard. This is done over here, since on most display targets the
mouse and keyboard can't be setup before the display has. */
int xf86_dga2_open_display(int reopen)
{
int i;
/* only have todo the fork's the first time we go DGA, otherwise people
who do a lott of dga <-> window switching will get a lott of
children */
static int first_time = 1;
xf86_dga_first_click = 0;
if (reopen)
{
sysdep_display_effect_close();
return xf86_dga2_set_mode();
}
window = RootWindow(display,xf86ctx.screen);
if (first_time)
{
if(xf86_dga_vidmode_setup_mode_restore())
return 1;
first_time = 0;
}
/* HACK HACK HACK, keys get stuck when they are pressed when
XDGASetMode is called, so wait for all keys to be released */
do {
char keys[32];
XQueryKeymap(display, keys);
for (i=0; (i<32) && (keys[i]==0); i++) {}
} while(i<32);
/* Grab keyb and mouse ! */
if(xinput_open(1, 0))
{
fprintf(stderr,"XGrabKeyboard failed\n");
return 1;
}
if(xf86_dga2_set_mode())
return 1;
/* setup the colormap */
xf86ctx.cmap = XDGACreateColormap(display, xf86ctx.screen,
xf86ctx.device, AllocNone);
XDGAInstallColormap(display,xf86ctx.screen,xf86ctx.cmap);
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;
}
