diff --git a/src/compton.c b/src/compton.c index 448633a..69aeddd 100644 --- a/src/compton.c +++ b/src/compton.c @@ -74,6 +74,11 @@ XserverRegion screen_reg = None; /// Current active window. Used by EWMH _NET_ACTIVE_WINDOW focus /// detection. win *active_win = NULL; +/// Whether all windows are currently redirected. +Bool redirected = False; +/// Whether there's a highest fullscreen window, and all windows could +/// be unredirected. +Bool unredir_possible = False; /// Pregenerated alpha pictures. Picture *alpha_picts = NULL; @@ -188,6 +193,7 @@ static options_t opts = { .synchronize = False, .detect_rounded_corners = False, .paint_on_overlay = False, + .unredir_if_possible = False, .refresh_rate = 0, .sw_opti = False, @@ -1360,8 +1366,13 @@ get_alpha_pict_o(opacity_t o) { static win * paint_preprocess(Display *dpy, win *list) { + // Initialize unredir_possible + unredir_possible = False; + win *w; win *t = NULL, *next = NULL; + // Trace whether it's the highest window to paint + Bool is_highest = True; // Fading step calculation unsigned steps = (sub_unslong(get_time_ms(), fade_time) @@ -1410,24 +1421,6 @@ paint_preprocess(Display *dpy, win *list) { } if (to_paint) { - // Fetch the picture and pixmap if needed - if (!w->picture) { - XRenderPictureAttributes pa; - XRenderPictFormat *format; - Drawable draw = w->id; - - if (has_name_pixmap && !w->pixmap) { - set_ignore(dpy, NextRequest(dpy)); - w->pixmap = XCompositeNameWindowPixmap(dpy, w->id); - } - if (w->pixmap) draw = w->pixmap; - - format = XRenderFindVisualFormat(dpy, w->a.visual); - pa.subwindow_mode = IncludeInferiors; - w->picture = XRenderCreatePicture( - dpy, draw, format, CPSubwindowMode, &pa); - } - // Fetch bounding region if (!w->border_size) { w->border_size = border_size(dpy, w); @@ -1482,6 +1475,10 @@ paint_preprocess(Display *dpy, win *list) { != (w->to_paint && WINDOW_SOLID == mode_old)) reg_ignore_expire = True; + // Add window to damaged area if its painting status changes + if (to_paint != w->to_paint) + add_damage_win(dpy, w); + if (to_paint) { // Generate ignore region for painting to reduce GPU load if (reg_ignore_expire || !w->to_paint) { @@ -1516,6 +1513,14 @@ paint_preprocess(Display *dpy, win *list) { last_reg_ignore = w->reg_ignore; + if (is_highest && to_paint) { + is_highest = False; + if (WINDOW_SOLID == w->mode + && (!w->frame_opacity || !win_has_frame(w)) + && win_is_fullscreen(w)) + unredir_possible = True; + } + // Reset flags w->flags = 0; } @@ -1536,6 +1541,37 @@ paint_preprocess(Display *dpy, win *list) { w->to_paint = to_paint; } + // If possible, unredirect all windows and stop painting + if (opts.unredir_if_possible && unredir_possible) { + redir_stop(dpy); + } + else { + redir_start(dpy); + } + + // Fetch pictures only if windows are redirected + if (redirected) { + for (w = t; w; w = w->prev_trans) { + // Fetch the picture and pixmap if needed + if (!w->picture) { + XRenderPictureAttributes pa; + XRenderPictFormat *format; + Drawable draw = w->id; + + if (has_name_pixmap && !w->pixmap) { + set_ignore(dpy, NextRequest(dpy)); + w->pixmap = XCompositeNameWindowPixmap(dpy, w->id); + } + if (w->pixmap) draw = w->pixmap; + + format = XRenderFindVisualFormat(dpy, w->a.visual); + pa.subwindow_mode = IncludeInferiors; + w->picture = XRenderCreatePicture( + dpy, draw, format, CPSubwindowMode, &pa); + } + } + } + return t; } @@ -2053,7 +2089,7 @@ static void unmap_win(Display *dpy, Window id, Bool fade) { win *w = find_win(id); - if (!w) return; + if (!w || IsUnmapped == w->a.map_state) return; w->a.map_state = IsUnmapped; @@ -2464,6 +2500,8 @@ static void restack_win(Display *dpy, win *w, Window new_above) { Window old_above; + update_reg_ignore_expire(w); + if (w->next) { old_above = w->next->id; } else { @@ -2593,7 +2631,7 @@ configure_win(Display *dpy, XConfigureEvent *ce) { win_update_shape(dpy, w); } - if (w->a.map_state != IsUnmapped && damage) { + if (damage) { XserverRegion extents = win_extents(dpy, w); XFixesUnionRegion(dpy, damage, damage, extents); XFixesDestroyRegion(dpy, extents); @@ -3499,6 +3537,10 @@ usage(void) { "--respect-attr-shadow\n" " Respect _COMPTON_SHADOW. This a prototype-level feature, which\n" " you must not rely on.\n" + "--unredir-if-possible\n" + " Unredirect all windows if a full-screen opaque window is\n" + " detected, to maximize performance for full-screen windows.\n" + " Experimental.\n" "\n" "Format of a condition:\n" "\n" @@ -3930,6 +3972,7 @@ get_cfg(int argc, char *const *argv) { { "vsync-aggressive", no_argument, NULL, 275 }, { "use-ewmh-active-win", no_argument, NULL, 276 }, { "respect-attr-shadow", no_argument, NULL, 277 }, + { "unredir-if-possible", no_argument, NULL, 278 }, // Must terminate with a NULL entry { NULL, 0, NULL, 0 }, }; @@ -4124,6 +4167,10 @@ get_cfg(int argc, char *const *argv) { // --respect-attr-shadow opts.respect_attr_shadow = True; break; + case 278: + // --unredir-if-possible + opts.unredir_if_possible = True; + break; default: usage(); break; @@ -4522,6 +4569,61 @@ init_overlay(void) { } } +/** + * Redirect all windows. + */ +static void +redir_start(Display *dpy) { + if (!redirected) { +#ifdef DEBUG_REDIR + printf("redir_start(): Screen redirected.\n"); +#endif + + // Map overlay window. Done firstly according to this: + // https://bugzilla.gnome.org/show_bug.cgi?id=597014 + if (overlay) + XMapWindow(dpy, overlay); + + XCompositeRedirectSubwindows(dpy, root, CompositeRedirectManual); + + // Must call XSync() here + XSync(dpy, False); + + redirected = True; + } +} + +/** + * Unredirect all windows. + */ +static void +redir_stop(Display *dpy) { + if (redirected) { +#ifdef DEBUG_REDIR + printf("redir_stop(): Screen unredirected.\n"); +#endif + // Destroy all Pictures as they expire once windows are unredirected + // If we don't destroy them here, looks like the resources are just + // kept inaccessible somehow + for (win *w = list; w; w = w->next) { + free_pixmap(dpy, &w->pixmap); + free_picture(dpy, &w->picture); + } + + XCompositeUnredirectSubwindows(dpy, root, CompositeRedirectManual); + + // Unmap overlay window + if (overlay) + XUnmapWindow(dpy, overlay); + + // Must call XSync() here + XSync(dpy, False); + + redirected = False; + + } +} + int main(int argc, char **argv) { XEvent ev; @@ -4689,8 +4791,7 @@ main(int argc, char **argv) { all_damage = None; XGrabServer(dpy); - XCompositeRedirectSubwindows( - dpy, root, CompositeRedirectManual); + redir_start(dpy); XSelectInput(dpy, root, SubstructureNotifyMask @@ -4725,7 +4826,8 @@ main(int argc, char **argv) { t = paint_preprocess(dpy, list); - paint_all(dpy, None, t); + if (redirected) + paint_all(dpy, None, t); // Initialize idling idling = False; @@ -4737,9 +4839,9 @@ main(int argc, char **argv) { while (XEventsQueued(dpy, QueuedAfterReading) || (evpoll(&ufd, (ev_received ? 0: (idling ? -1: fade_timeout()))) > 0)) { - // Sometimes poll() returns 1 but no events are actually read, causing - // XNextEvent() to block, I have no idea what's wrong, so we check for the - // number of events here + // Sometimes poll() returns 1 but no events are actually read, + // causing XNextEvent() to block, I have no idea what's wrong, so we + // check for the number of events here if (XEventsQueued(dpy, QueuedAfterReading)) { XNextEvent(dpy, &ev); ev_handle((XEvent *) &ev); @@ -4752,6 +4854,10 @@ main(int argc, char **argv) { t = paint_preprocess(dpy, list); + // If the screen is unredirected, free all_damage to stop painting + if (!redirected) + free_region(dpy, &all_damage); + if (all_damage && !is_region_empty(dpy, all_damage)) { static int paint; paint_all(dpy, all_damage, t); diff --git a/src/compton.h b/src/compton.h index b7a9d66..b66e773 100644 --- a/src/compton.h +++ b/src/compton.h @@ -14,6 +14,7 @@ // #define DEBUG_CLIENTWIN 1 // #define DEBUG_WINDATA 1 // #define DEBUG_WINMATCH 1 +// #define DEBUG_REDIR 1 // #define MONITOR_REPAINT 1 // Whether to enable PCRE regular expression support in blacklists, enabled @@ -367,6 +368,9 @@ typedef struct _options { /// Whether to paint on X Composite overlay window instead of root /// window. Bool paint_on_overlay; + /// Whether to unredirect all windows if a full-screen opaque window + /// is detected. + Bool unredir_if_possible; /// Whether to work under synchronized mode for debugging. Bool synchronize; @@ -960,12 +964,26 @@ update_reg_ignore_expire(const win *w) { reg_ignore_expire = True; } +/** + * Check whether a window has WM frames. + */ static inline bool win_has_frame(const win *w) { return w->top_width || w->left_width || w->right_width || w->bottom_width; } +/** + * Check if a window is a fullscreen window. + * + * It's not using w->border_size for performance measures. + */ +static inline bool +win_is_fullscreen(const win *w) { + return (w->a.x <= 0 && w->a.y <= 0 && (w->a.x + w->widthb) >= root_width + && (w->a.y + w->heightb) >= root_height && !w->bounding_shaped); +} + static void win_rounded_corners(Display *dpy, win *w); @@ -1345,3 +1363,9 @@ init_dbe(void); static void init_overlay(void); + +static void +redir_start(Display *dpy); + +static void +redir_stop(Display *dpy);