int run_game(GameData *data)
{
int cur_shot = 0;
while(cur_shot < data->num_shots)
{
Pacman *cur_pac_shot = (data->shots + cur_shot);
draw_pacman(cur_pac_shot);
draw_pebbles(data->pebbles, data->num_pebbles);
*cur_pac_shot->velocity = *(data->old_velocity);
Velocity *velocity = cur_pac_shot->velocity;
while(!KEY_PRESSED(START))
{
update_velocities(velocity);
wait_for_vblank();
draw_user_velocities(data->velocity_frame_x, data->velocity_frame_y, velocity);
draw_pacman(cur_pac_shot);
}
*(data->old_velocity ) = *cur_pac_shot->velocity;//MUST save old shot
erase_frame(data->velocity_frame_x, data->bg_color);
erase_frame(data->velocity_frame_y, data->bg_color);
//now we run simulation
fill_frame(data->indicator, GREEN);
int i = 0;
while(!off_screen(cur_pac_shot->frame))
{
for (i = 0; i < data->num_pebbles; i++) {
PacmanPebble *cur_pebble = (data->pebbles + i);
check_collision(cur_pac_shot, cur_pebble);
}
wait_for_vblank();
erase_frame(cur_pac_shot->frame, data->bg_color);
move_shot(cur_pac_shot);
draw_pebbles(data->pebbles, data->num_pebbles);
draw_pacman(cur_pac_shot);
}
erase_frame(cur_pac_shot->frame, data->bg_color);
cur_shot++;
}
fill_frame(data->indicator, RED);
return 0;
}
void
Pipe::Enable(bool enable)
{
CALLED();
addr_t pipeReg = INTEL_DISPLAY_A_PIPE_CONTROL + fPipeOffset;
addr_t planeReg = INTEL_DISPLAY_A_CONTROL + fPlaneOffset;
// Planes always have to operate on an enabled pipe
if (enable) {
write32(pipeReg, read32(pipeReg) | INTEL_PIPE_ENABLED);
wait_for_vblank();
write32(planeReg, read32(planeReg) | DISPLAY_CONTROL_ENABLED);
} else {
write32(planeReg, read32(planeReg) & ~DISPLAY_CONTROL_ENABLED);
wait_for_vblank();
write32(pipeReg, read32(pipeReg) & ~INTEL_PIPE_ENABLED);
}
read32(INTEL_DISPLAY_A_BASE);
// flush the eventually cached PCI bus writes
}
static void
clutter_stage_glx_redraw (ClutterStageWindow *stage_window)
{
ClutterBackendX11 *backend_x11;
ClutterBackendGLX *backend_glx;
ClutterStageX11 *stage_x11;
ClutterStageGLX *stage_glx;
GLXDrawable drawable;
unsigned int video_sync_count;
gboolean may_use_clipped_redraw;
gboolean use_clipped_redraw;
CLUTTER_STATIC_TIMER (painting_timer,
"Redrawing", /* parent */
"Painting actors",
"The time spent painting actors",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (swapbuffers_timer,
"Redrawing", /* parent */
"glXSwapBuffers",
"The time spent blocked by glXSwapBuffers",
0 /* no application private data */);
CLUTTER_STATIC_TIMER (blit_sub_buffer_timer,
"Redrawing", /* parent */
"glx_blit_sub_buffer",
"The time spent in _glx_blit_sub_buffer",
0 /* no application private data */);
stage_x11 = CLUTTER_STAGE_X11 (stage_window);
if (stage_x11->xwin == None)
return;
stage_glx = CLUTTER_STAGE_GLX (stage_window);
backend_x11 = stage_x11->backend;
backend_glx = CLUTTER_BACKEND_GLX (backend_x11);
CLUTTER_TIMER_START (_clutter_uprof_context, painting_timer);
if (G_LIKELY (backend_glx->can_blit_sub_buffer) &&
/* NB: a zero width redraw clip == full stage redraw */
stage_glx->bounding_redraw_clip.width != 0 &&
/* some drivers struggle to get going and produce some junk
* frames when starting up... */
G_LIKELY (stage_glx->frame_count > 3) &&
/* While resizing a window clipped redraws are disabled to avoid
* artefacts. See clutter-event-x11.c:event_translate for a
* detailed explanation */
G_LIKELY (stage_x11->clipped_redraws_cool_off == 0))
{
may_use_clipped_redraw = TRUE;
}
else
may_use_clipped_redraw = FALSE;
if (may_use_clipped_redraw &&
G_LIKELY (!(clutter_paint_debug_flags &
CLUTTER_DEBUG_DISABLE_CLIPPED_REDRAWS)))
use_clipped_redraw = TRUE;
else
use_clipped_redraw = FALSE;
if (use_clipped_redraw)
{
CLUTTER_NOTE (CLIPPING,
"Stage clip pushed: x=%d, y=%d, width=%d, height=%d\n",
stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
cogl_clip_push_window_rectangle (stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
_clutter_stage_do_paint (stage_x11->wrapper,
&stage_glx->bounding_redraw_clip);
cogl_clip_pop ();
}
else
{
CLUTTER_NOTE (CLIPPING, "Unclipped stage paint\n");
_clutter_stage_do_paint (stage_x11->wrapper, NULL);
}
if (may_use_clipped_redraw &&
G_UNLIKELY ((clutter_paint_debug_flags & CLUTTER_DEBUG_REDRAWS)))
{
static CoglMaterial *outline = NULL;
ClutterGeometry *clip = &stage_glx->bounding_redraw_clip;
ClutterActor *actor = CLUTTER_ACTOR (stage_x11->wrapper);
CoglHandle vbo;
float x_1 = clip->x;
float x_2 = clip->x + clip->width;
float y_1 = clip->y;
float y_2 = clip->y + clip->height;
float quad[8] = {
x_1, y_1,
x_2, y_1,
x_2, y_2,
x_1, y_2
};
CoglMatrix modelview;
if (outline == NULL)
{
outline = cogl_material_new ();
cogl_material_set_color4ub (outline, 0xff, 0x00, 0x00, 0xff);
}
vbo = cogl_vertex_buffer_new (4);
cogl_vertex_buffer_add (vbo,
"gl_Vertex",
2, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
quad);
cogl_vertex_buffer_submit (vbo);
cogl_push_matrix ();
cogl_matrix_init_identity (&modelview);
_clutter_actor_apply_modelview_transform (actor, &modelview);
cogl_set_modelview_matrix (&modelview);
cogl_set_source (outline);
cogl_vertex_buffer_draw (vbo, COGL_VERTICES_MODE_LINE_LOOP,
0 , 4);
cogl_pop_matrix ();
cogl_object_unref (vbo);
}
cogl_flush ();
CLUTTER_TIMER_STOP (_clutter_uprof_context, painting_timer);
drawable = stage_glx->glxwin
? stage_glx->glxwin
: stage_x11->xwin;
/* If we might ever use _clutter_backend_glx_blit_sub_buffer then we
* always need to keep track of the video_sync_count so that we can
* throttle blits.
*
* Note: we get the count *before* we issue any glXCopySubBuffer or
* blit_sub_buffer request in case the count would go up before
* returning control to us.
*/
if (backend_glx->can_blit_sub_buffer && backend_glx->get_video_sync)
backend_glx->get_video_sync (&video_sync_count);
/* push on the screen */
if (use_clipped_redraw)
{
ClutterGeometry *clip = &stage_glx->bounding_redraw_clip;
ClutterGeometry copy_area;
ClutterActor *actor;
CLUTTER_NOTE (BACKEND,
"_glx_blit_sub_buffer (window: 0x%lx, "
"x: %d, y: %d, "
"width: %d, height: %d)",
(unsigned long) drawable,
stage_glx->bounding_redraw_clip.x,
stage_glx->bounding_redraw_clip.y,
stage_glx->bounding_redraw_clip.width,
stage_glx->bounding_redraw_clip.height);
/* XXX: It seems there will be a race here in that the stage
* window may be resized before glXCopySubBufferMESA is handled
* and so we may copy the wrong region. I can't really see how
* we can handle this with the current state of X but at least
* in this case a full redraw should be queued by the resize
* anyway so it should only exhibit temporary artefacts.
*/
actor = CLUTTER_ACTOR (stage_x11->wrapper);
copy_area.y = clutter_actor_get_height (actor)
- clip->y
- clip->height;
copy_area.x = clip->x;
copy_area.width = clip->width;
copy_area.height = clip->height;
/* glXCopySubBufferMESA and glBlitFramebuffer are not integrated
* with the glXSwapIntervalSGI mechanism which we usually use to
* throttle the Clutter framerate to the vertical refresh and so
* we have to manually wait for the vblank period...
*/
/* Here 'is_synchronized' only means that the blit won't cause a
* tear, ie it won't prevent multiple blits per retrace if they
* can all be performed in the blanking period. If that's the
* case then we still want to use the vblank sync menchanism but
* we only need it to throttle redraws.
*/
if (!backend_glx->blit_sub_buffer_is_synchronized)
{
/* XXX: note that glXCopySubBuffer, at least for Intel, is
* synchronized with the vblank but glBlitFramebuffer may
* not be so we use the same scheme we do when calling
* glXSwapBuffers without the swap_control extension and
* call glFinish () before waiting for the vblank period.
*
* See where we call glXSwapBuffers for more details.
*/
glFinish ();
wait_for_vblank (backend_glx);
}
else if (backend_glx->get_video_sync)
{
/* If we have the GLX_SGI_video_sync extension then we can
* be a bit smarter about how we throttle blits by avoiding
* any waits if we can see that the video sync count has
* already progressed. */
if (backend_glx->last_video_sync_count == video_sync_count)
wait_for_vblank (backend_glx);
}
else
wait_for_vblank (backend_glx);
CLUTTER_TIMER_START (_clutter_uprof_context, blit_sub_buffer_timer);
_clutter_backend_glx_blit_sub_buffer (backend_glx,
drawable,
copy_area.x,
copy_area.y,
copy_area.width,
copy_area.height);
CLUTTER_TIMER_STOP (_clutter_uprof_context, blit_sub_buffer_timer);
}
else
{
CLUTTER_NOTE (BACKEND, "glXSwapBuffers (display: %p, window: 0x%lx)",
backend_x11->xdpy,
(unsigned long) drawable);
/* If we have GLX swap buffer events then glXSwapBuffers will return
* immediately and we need to track that there is a swap in
* progress... */
if (clutter_feature_available (CLUTTER_FEATURE_SWAP_EVENTS))
stage_glx->pending_swaps++;
if (backend_glx->vblank_type != CLUTTER_VBLANK_GLX_SWAP &&
backend_glx->vblank_type != CLUTTER_VBLANK_NONE)
{
/* If we are going to wait for VBLANK manually, we not only
* need to flush out pending drawing to the GPU before we
* sleep, we need to wait for it to finish. Otherwise, we
* may end up with the situation:
*
* - We finish drawing - GPU drawing continues
* - We go to sleep - GPU drawing continues
* VBLANK - We call glXSwapBuffers - GPU drawing continues
* - GPU drawing continues
* - Swap buffers happens
*
* Producing a tear. Calling glFinish() first will cause us
* to properly wait for the next VBLANK before we swap. This
* obviously does not happen when we use _GLX_SWAP and let
* the driver do the right thing
*/
glFinish ();
wait_for_vblank (backend_glx);
}
CLUTTER_TIMER_START (_clutter_uprof_context, swapbuffers_timer);
glXSwapBuffers (backend_x11->xdpy, drawable);
CLUTTER_TIMER_STOP (_clutter_uprof_context, swapbuffers_timer);
_cogl_swap_buffers_notify ();
}
backend_glx->last_video_sync_count = video_sync_count;
/* reset the redraw clipping for the next paint... */
stage_glx->initialized_redraw_clip = FALSE;
stage_glx->frame_count++;
}
void
set_display_power_mode(uint32 mode)
{
uint32 monitorMode = 0;
if (mode == B_DPMS_ON) {
uint32 pll = read32(INTEL_DISPLAY_A_PLL);
if ((pll & DISPLAY_PLL_ENABLED) == 0) {
// reactivate PLL
write32(INTEL_DISPLAY_A_PLL, pll);
read32(INTEL_DISPLAY_A_PLL);
spin(150);
write32(INTEL_DISPLAY_A_PLL, pll | DISPLAY_PLL_ENABLED);
read32(INTEL_DISPLAY_A_PLL);
spin(150);
write32(INTEL_DISPLAY_A_PLL, pll | DISPLAY_PLL_ENABLED);
read32(INTEL_DISPLAY_A_PLL);
spin(150);
}
pll = read32(INTEL_DISPLAY_B_PLL);
if ((pll & DISPLAY_PLL_ENABLED) == 0) {
// reactivate PLL
write32(INTEL_DISPLAY_B_PLL, pll);
read32(INTEL_DISPLAY_B_PLL);
spin(150);
write32(INTEL_DISPLAY_B_PLL, pll | DISPLAY_PLL_ENABLED);
read32(INTEL_DISPLAY_B_PLL);
spin(150);
write32(INTEL_DISPLAY_B_PLL, pll | DISPLAY_PLL_ENABLED);
read32(INTEL_DISPLAY_B_PLL);
spin(150);
}
enable_display_pipe(true);
enable_display_plane(true);
}
wait_for_vblank();
switch (mode) {
case B_DPMS_ON:
monitorMode = DISPLAY_MONITOR_ON;
break;
case B_DPMS_SUSPEND:
monitorMode = DISPLAY_MONITOR_SUSPEND;
break;
case B_DPMS_STAND_BY:
monitorMode = DISPLAY_MONITOR_STAND_BY;
break;
case B_DPMS_OFF:
monitorMode = DISPLAY_MONITOR_OFF;
break;
}
if (gInfo->head_mode & HEAD_MODE_A_ANALOG) {
write32(INTEL_DISPLAY_A_ANALOG_PORT,
(read32(INTEL_DISPLAY_A_ANALOG_PORT)
& ~(DISPLAY_MONITOR_MODE_MASK | DISPLAY_MONITOR_PORT_ENABLED))
| monitorMode
| (mode != B_DPMS_OFF ? DISPLAY_MONITOR_PORT_ENABLED : 0));
}
if (gInfo->head_mode & HEAD_MODE_B_DIGITAL) {
write32(INTEL_DISPLAY_B_DIGITAL_PORT,
(read32(INTEL_DISPLAY_B_DIGITAL_PORT)
& ~(DISPLAY_MONITOR_MODE_MASK | DISPLAY_MONITOR_PORT_ENABLED))
| (mode != B_DPMS_OFF ? DISPLAY_MONITOR_PORT_ENABLED : 0));
// TODO: monitorMode?
}
if (mode != B_DPMS_ON) {
enable_display_plane(false);
wait_for_vblank();
enable_display_pipe(false);
}
if (mode == B_DPMS_OFF) {
write32(INTEL_DISPLAY_A_PLL, read32(INTEL_DISPLAY_A_PLL)
| DISPLAY_PLL_ENABLED);
write32(INTEL_DISPLAY_B_PLL, read32(INTEL_DISPLAY_B_PLL)
| DISPLAY_PLL_ENABLED);
read32(INTEL_DISPLAY_B_PLL);
// flush the possibly cached PCI bus writes
spin(150);
}
if ((gInfo->head_mode & HEAD_MODE_LVDS_PANEL) != 0)
enable_lvds_panel(mode == B_DPMS_ON);
read32(INTEL_DISPLAY_A_BASE);
// flush the possibly cached PCI bus writes
}