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rootston: don't submit too much damage

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We only need to damage the parts of the screen that changed since last frame,
we don't need to accumulate damage from previous buffers.

We still need to re-render the accumulated damage.

Fixes https://github.com/swaywm/wlroots/issues/1665
This commit is contained in:
Simon Ser 2019-04-25 19:39:44 +03:00 committed by Drew DeVault
parent d6e250b389
commit 57d32d03a8
1 changed files with 31 additions and 23 deletions
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54
rootston/render.c
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@ -58,7 +58,7 @@ static void render_texture(struct wlr_output *wlr_output,
pixman_region32_intersect(&damage, &damage, output_damage);
bool damaged = pixman_region32_not_empty(&damage);
if (!damaged) {
goto damage_finish;
goto buffer_damage_finish;
}
int nrects;
@ -68,7 +68,7 @@ static void render_texture(struct wlr_output *wlr_output,
wlr_render_texture_with_matrix(renderer, texture, matrix, alpha);
}
damage_finish:
buffer_damage_finish:
pixman_region32_fini(&damage);
}
@ -121,7 +121,7 @@ static void render_decorations(struct roots_output *output,
pixman_region32_intersect(&damage, &damage, data->damage);
bool damaged = pixman_region32_not_empty(&damage);
if (!damaged) {
goto damage_finish;
goto buffer_damage_finish;
}
float matrix[9];
@ -137,7 +137,7 @@ static void render_decorations(struct roots_output *output,
wlr_render_quad_with_matrix(renderer, color, matrix);
}
damage_finish:
buffer_damage_finish:
pixman_region32_fini(&damage);
}
@ -221,25 +221,26 @@ void output_render(struct roots_output *output) {
}
bool needs_frame;
pixman_region32_t damage;
pixman_region32_init(&damage);
if (!wlr_output_damage_attach_render(output->damage, &needs_frame, &damage)) {
pixman_region32_t buffer_damage;
pixman_region32_init(&buffer_damage);
if (!wlr_output_damage_attach_render(output->damage, &needs_frame,
&buffer_damage)) {
return;
}
struct render_data data = {
.damage = &damage,
.damage = &buffer_damage,
.alpha = 1.0,
};
if (!needs_frame) {
// Output doesn't need swap and isn't damaged, skip rendering completely
goto damage_finish;
goto buffer_damage_finish;
}
wlr_renderer_begin(renderer, wlr_output->width, wlr_output->height);
if (!pixman_region32_not_empty(&damage)) {
if (!pixman_region32_not_empty(&buffer_damage)) {
// Output isn't damaged but needs buffer swap
goto renderer_end;
}
@ -249,15 +250,15 @@ void output_render(struct roots_output *output) {
}
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
pixman_box32_t *rects = pixman_region32_rectangles(&buffer_damage, &nrects);
for (int i = 0; i < nrects; ++i) {
scissor_output(output->wlr_output, &rects[i]);
wlr_renderer_clear(renderer, clear_color);
}
render_layer(output, &damage,
render_layer(output, &buffer_damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
render_layer(output, &damage,
render_layer(output, &buffer_damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
// If a view is fullscreen on this output, render it
@ -285,39 +286,46 @@ void output_render(struct roots_output *output) {
render_view(output, view, &data);
}
// Render top layer above shell views
render_layer(output, &damage,
render_layer(output, &buffer_damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
}
render_drag_icons(output, &damage, server->input);
render_drag_icons(output, &buffer_damage, server->input);
render_layer(output, &damage,
render_layer(output, &buffer_damage,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
renderer_end:
wlr_output_render_software_cursors(wlr_output, &damage);
wlr_output_render_software_cursors(wlr_output, &buffer_damage);
wlr_renderer_scissor(renderer, NULL);
wlr_renderer_end(renderer);
int width, height;
wlr_output_transformed_resolution(wlr_output, &width, &height);
pixman_region32_t output_damage;
pixman_region32_init(&output_damage);
if (server->config->debug_damage_tracking) {
pixman_region32_union_rect(&damage, &damage, 0, 0, width, height);
pixman_region32_union_rect(&output_damage, &output_damage,
0, 0, width, height);
}
enum wl_output_transform transform =
wlr_output_transform_invert(wlr_output->transform);
wlr_region_transform(&damage, &damage, transform, width, height);
wlr_region_transform(&output_damage, &output->damage->current,
transform, width, height);
wlr_output_set_damage(wlr_output, &output_damage);
pixman_region32_fini(&output_damage);
wlr_output_set_damage(wlr_output, &damage);
if (!wlr_output_commit(wlr_output)) {
goto damage_finish;
goto buffer_damage_finish;
}
output->last_frame = desktop->last_frame = now;
damage_finish:
pixman_region32_fini(&damage);
buffer_damage_finish:
pixman_region32_fini(&buffer_damage);
// Send frame done events to all surfaces
output_for_each_surface(output, surface_send_frame_done_iterator, &now);