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backend: do partial updates 

Although the functionality is not implemented by any backends yet.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2019-07-26 00:00:51 +01:00
parent f86d6b7cbd
commit 06dba4b196
No known key found for this signature in database
GPG Key ID: 37C999F617EA1A47
3 changed files with 62 additions and 26 deletions
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81
src/backend/backend.c
View File

@ -71,6 +71,32 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
static struct timespec last_paint = {0};
#endif
region_t reg_paint;
assert(ps->o.blur_method != BLUR_METHOD_INVALID);
if (ps->o.blur_method != BLUR_METHOD_NONE && ps->backend_data->ops->get_blur_size) {
int blur_width, blur_height;
ps->backend_data->ops->get_blur_size(ps->backend_blur_context,
&blur_width, &blur_height);
if (t) {
// The region of screen a given window influences will be smeared
// out by blur. With more windows on top of the given window, the
// influences region will be smeared out more.
//
// Instead of accurately calculate how much bigger the damage
// region will be because of blur, we assume the worst case here.
// That is, the damaged window is at the bottom of the stack, and
// all other windows have semi-transparent background
resize_region_in_place(&reg_damage, blur_width * t->stacking_rank,
blur_height * t->stacking_rank);
pixman_region32_intersect(&reg_damage, &reg_damage, &ps->screen_reg);
}
reg_paint = resize_region(&reg_damage, blur_width, blur_height);
pixman_region32_intersect(&reg_paint, &reg_paint, &ps->screen_reg);
} else {
pixman_region32_init(&reg_paint);
pixman_region32_copy(&reg_paint, &reg_damage);
}
// A hint to backend, the region that will be visible on screen
// backend can optimize based on this info
region_t reg_visible;
@ -85,12 +111,12 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
// TODO Bind root pixmap
if (ps->backend_data->ops->prepare) {
ps->backend_data->ops->prepare(ps->backend_data, &reg_damage);
ps->backend_data->ops->prepare(ps->backend_data, &reg_paint);
}
if (ps->root_image) {
ps->backend_data->ops->compose(ps->backend_data, ps->root_image, 0, 0,
&reg_damage, &reg_visible);
&reg_paint, &reg_visible);
}
// Windows are sorted from bottom to top
@ -109,9 +135,9 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
// Draw shadow on target
if (w->shadow) {
// Clip region for the shadow
// reg_shadow \in reg_damage
// reg_shadow \in reg_paint
auto reg_shadow = win_extents_by_val(w);
pixman_region32_intersect(&reg_shadow, &reg_shadow, &reg_damage);
pixman_region32_intersect(&reg_shadow, &reg_shadow, &reg_paint);
if (!ps->o.wintype_option[w->window_type].full_shadow) {
pixman_region32_subtract(&reg_shadow, &reg_shadow, &reg_bound);
}
@ -156,10 +182,10 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
}
// The clip region for the current window, in global/target coordinates
// reg_paint \in reg_damage
region_t reg_paint;
pixman_region32_init(&reg_paint);
pixman_region32_intersect(&reg_paint, &reg_bound, &reg_damage);
// reg_paint_in_bound \in reg_paint
region_t reg_paint_in_bound;
pixman_region32_init(&reg_paint_in_bound);
pixman_region32_intersect(&reg_paint_in_bound, &reg_bound, &reg_paint);
// Blur window background
// TODO since the background might change the content of the window (e.g.
@ -176,10 +202,10 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
// TODO resize blur region to fix black line artifact
if (real_win_mode == WMODE_TRANS || ps->o.force_win_blend) {
// We need to blur the bounding shape of the window
// (reg_paint = reg_bound \cap reg_damage)
ps->backend_data->ops->blur(ps->backend_data, w->opacity,
ps->backend_blur_context,
&reg_paint, &reg_visible);
// (reg_paint_in_bound = reg_bound \cap reg_paint)
ps->backend_data->ops->blur(
ps->backend_data, w->opacity, ps->backend_blur_context,
&reg_paint_in_bound, &reg_visible);
} else {
// Window itself is solid, we only need to blur the frame
// region
@ -190,8 +216,8 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
auto reg_blur = win_get_region_frame_local_by_val(w);
pixman_region32_translate(&reg_blur, w->g.x, w->g.y);
// make sure reg_blur \in reg_damage
pixman_region32_intersect(&reg_blur, &reg_blur, &reg_damage);
// make sure reg_blur \in reg_paint
pixman_region32_intersect(&reg_blur, &reg_blur, &reg_paint);
ps->backend_data->ops->blur(ps->backend_data, w->opacity,
ps->backend_blur_context,
&reg_blur, &reg_visible);
@ -200,8 +226,9 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
}
// Draw window on target
if (!w->invert_color && !w->dim && w->frame_opacity == 1 && w->opacity == 1) {
ps->backend_data->ops->compose(ps->backend_data, w->win_image, w->g.x,
w->g.y, &reg_paint, &reg_visible);
ps->backend_data->ops->compose(ps->backend_data, w->win_image,
w->g.x, w->g.y,
&reg_paint_in_bound, &reg_visible);
} else {
// For window image processing, we don't need to limit the process
// region to damage, since the window image data is independent
@ -219,7 +246,7 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
// outside of the damage region won't be painted onto target
region_t reg_visible_local;
pixman_region32_init(&reg_visible_local);
pixman_region32_intersect(&reg_visible_local, &reg_visible, &reg_damage);
pixman_region32_intersect(&reg_visible_local, &reg_visible, &reg_paint);
pixman_region32_translate(&reg_visible_local, -w->g.x, -w->g.y);
// Data outside of the bounding shape won't be visible, but it is
// not necessary to limit the image operations to the bounding
@ -228,7 +255,6 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
pixman_region32_intersect(&reg_visible_local, &reg_visible_local,
&reg_bound_local);
// A region covers the entire window
auto new_img = ps->backend_data->ops->copy(
ps->backend_data, w->win_image, &reg_visible_local);
if (w->invert_color) {
@ -258,21 +284,22 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
NULL, &reg_visible_local, (double[]){w->opacity});
}
ps->backend_data->ops->compose(ps->backend_data, new_img, w->g.x,
w->g.y, &reg_paint, &reg_visible);
w->g.y, &reg_paint_in_bound,
&reg_visible);
ps->backend_data->ops->release_image(ps->backend_data, new_img);
pixman_region32_fini(&reg_visible_local);
pixman_region32_fini(&reg_bound_local);
}
pixman_region32_fini(&reg_bound);
pixman_region32_fini(&reg_paint);
pixman_region32_fini(&reg_paint_in_bound);
}
pixman_region32_fini(&reg_damage);
pixman_region32_fini(&reg_paint);
if (ps->o.monitor_repaint) {
reg_damage = get_damage(ps, false);
ps->backend_data->ops->fill(ps->backend_data,
(struct color){0.5, 0, 0, 0.5}, &reg_damage);
pixman_region32_fini(&reg_damage);
auto reg_damage_debug = get_damage(ps, false);
ps->backend_data->ops->fill(
ps->backend_data, (struct color){0.5, 0, 0, 0.5}, &reg_damage_debug);
pixman_region32_fini(&reg_damage_debug);
}
// Move the head of the damage ring
@ -285,9 +312,11 @@ void paint_all_new(session_t *ps, struct managed_win *t, bool ignore_damage) {
if (ps->backend_data->ops->present) {
// Present the rendered scene
// Vsync is done here
ps->backend_data->ops->present(ps->backend_data, NULL);
ps->backend_data->ops->present(ps->backend_data, &reg_damage);
}
pixman_region32_fini(&reg_damage);
#ifdef DEBUG_REPAINT
struct timespec now = get_time_timespec();
struct timespec diff = {0};

5
src/compton.c
View File

@ -575,6 +575,11 @@ static struct managed_win *paint_preprocess(session_t *ps, bool *fade_running) {
}
w->prev_trans = bottom;
if (bottom) {
w->stacking_rank = bottom->stacking_rank + 1;
} else {
w->stacking_rank = 0;
}
bottom = w;
// If the screen is not redirected and the window has redir_ignore set,

2
src/win.h
View File

@ -169,6 +169,8 @@ struct managed_win {
void *shadow_image;
/// Pointer to the next higher window to paint.
struct managed_win *prev_trans;
/// Number of windows above this window
int stacking_rank;
// TODO rethink reg_ignore
// Core members