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output: add wlr_output_render_software_cursors

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Rendering in wlr_output_swap_buffers has unfortunate side-effects.
This commit is contained in:
emersion 2018-11-10 15:50:28 +01:00
parent 57307b7aa7
commit ca770995cc
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GPG key ID: 0FDE7BE0E88F5E48
3 changed files with 121 additions and 93 deletions
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6
include/wlr/types/wlr_output.h
View file

@ -230,6 +230,12 @@ struct wlr_output *wlr_output_from_resource(struct wl_resource *resource);
* a lock.
*/
void wlr_output_lock_software_cursors(struct wlr_output *output, bool lock);
/**
* Renders software cursors. This is a utility function that can be called when
* compositors render.
*/
void wlr_output_render_software_cursors(struct wlr_output *output,
pixman_region32_t *damage);
struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output);

1
rootston/output.c
View file

@ -518,6 +518,7 @@ static void render_output(struct roots_output *output) {
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
renderer_end:
wlr_output_render_software_cursors(wlr_output, &damage);
wlr_renderer_scissor(renderer, NULL);
wlr_renderer_end(renderer);

207
types/wlr_output.c
View file

@ -339,85 +339,6 @@ bool wlr_output_make_current(struct wlr_output *output, int *buffer_age) {
return output->impl->make_current(output, buffer_age);
}
static void output_scissor(struct wlr_output *output, pixman_box32_t *rect) {
struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend);
assert(renderer);
struct wlr_box box = {
.x = rect->x1,
.y = rect->y1,
.width = rect->x2 - rect->x1,
.height = rect->y2 - rect->y1,
};
int ow, oh;
wlr_output_transformed_resolution(output, &ow, &oh);
// Scissor is in renderer coordinates, ie. upside down
enum wl_output_transform transform =
wlr_output_transform_invert(output->transform);
wlr_box_transform(&box, transform, ow, oh, &box);
wlr_renderer_scissor(renderer, &box);
}
/**
* Returns the cursor box, scaled for its output.
*/
static void output_cursor_get_box(struct wlr_output_cursor *cursor,
struct wlr_box *box) {
box->x = cursor->x - cursor->hotspot_x;
box->y = cursor->y - cursor->hotspot_y;
box->width = cursor->width;
box->height = cursor->height;
}
static void output_cursor_render(struct wlr_output_cursor *cursor,
const struct timespec *when, pixman_region32_t *damage) {
struct wlr_renderer *renderer =
wlr_backend_get_renderer(cursor->output->backend);
assert(renderer);
struct wlr_texture *texture = cursor->texture;
if (cursor->surface != NULL) {
texture = wlr_surface_get_texture(cursor->surface);
}
if (texture == NULL) {
return;
}
struct wlr_box box;
output_cursor_get_box(cursor, &box);
pixman_region32_t surface_damage;
pixman_region32_init(&surface_damage);
pixman_region32_union_rect(&surface_damage, &surface_damage, box.x, box.y,
box.width, box.height);
pixman_region32_intersect(&surface_damage, &surface_damage, damage);
if (!pixman_region32_not_empty(&surface_damage)) {
goto surface_damage_finish;
}
float matrix[9];
wlr_matrix_project_box(matrix, &box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
cursor->output->transform_matrix);
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&surface_damage, &nrects);
for (int i = 0; i < nrects; ++i) {
output_scissor(cursor->output, &rects[i]);
wlr_render_texture_with_matrix(renderer, texture, matrix, 1.0f);
}
wlr_renderer_scissor(renderer, NULL);
if (cursor->surface != NULL) {
wlr_surface_send_frame_done(cursor->surface, when);
}
surface_damage_finish:
pixman_region32_fini(&surface_damage);
}
bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when,
pixman_region32_t *damage) {
if (output->frame_pending) {
@ -447,17 +368,6 @@ bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when,
when = &now;
}
if (pixman_region32_not_empty(&render_damage)) {
struct wlr_output_cursor *cursor;
wl_list_for_each(cursor, &output->cursors, link) {
if (!cursor->enabled || !cursor->visible ||
output->hardware_cursor == cursor) {
continue;
}
output_cursor_render(cursor, when, &render_damage);
}
}
struct wlr_output_event_swap_buffers event = {
.output = output,
.when = when,
@ -466,6 +376,7 @@ bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when,
wlr_signal_emit_safe(&output->events.swap_buffers, &event);
// Transform damage into renderer coordinates, ie. upside down
// TODO: take transformed coords, make the renderer flip the damage
enum wl_output_transform transform = wlr_output_transform_compose(
wlr_output_transform_invert(output->transform),
WL_OUTPUT_TRANSFORM_FLIPPED_180);
@ -476,6 +387,14 @@ bool wlr_output_swap_buffers(struct wlr_output *output, struct timespec *when,
return false;
}
struct wlr_output_cursor *cursor;
wl_list_for_each(cursor, &output->cursors, link) {
if (!cursor->enabled || !cursor->visible || cursor->surface == NULL) {
continue;
}
wlr_surface_send_frame_done(cursor->surface, when);
}
output->frame_pending = true;
output->needs_swap = false;
pixman_region32_clear(&output->damage);
@ -605,6 +524,111 @@ void wlr_output_lock_software_cursors(struct wlr_output *output, bool lock) {
// again.
}
static void output_scissor(struct wlr_output *output, pixman_box32_t *rect) {
struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend);
assert(renderer);
struct wlr_box box = {
.x = rect->x1,
.y = rect->y1,
.width = rect->x2 - rect->x1,
.height = rect->y2 - rect->y1,
};
int ow, oh;
wlr_output_transformed_resolution(output, &ow, &oh);
enum wl_output_transform transform =
wlr_output_transform_invert(output->transform);
wlr_box_transform(&box, transform, ow, oh, &box);
wlr_renderer_scissor(renderer, &box);
}
static void output_cursor_get_box(struct wlr_output_cursor *cursor,
struct wlr_box *box);
static void output_cursor_render(struct wlr_output_cursor *cursor,
pixman_region32_t *damage) {
struct wlr_renderer *renderer =
wlr_backend_get_renderer(cursor->output->backend);
assert(renderer);
struct wlr_texture *texture = cursor->texture;
if (cursor->surface != NULL) {
texture = wlr_surface_get_texture(cursor->surface);
}
if (texture == NULL) {
return;
}
struct wlr_box box;
output_cursor_get_box(cursor, &box);
pixman_region32_t surface_damage;
pixman_region32_init(&surface_damage);
pixman_region32_union_rect(&surface_damage, &surface_damage, box.x, box.y,
box.width, box.height);
pixman_region32_intersect(&surface_damage, &surface_damage, damage);
if (!pixman_region32_not_empty(&surface_damage)) {
goto surface_damage_finish;
}
float matrix[9];
wlr_matrix_project_box(matrix, &box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
cursor->output->transform_matrix);
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&surface_damage, &nrects);
for (int i = 0; i < nrects; ++i) {
output_scissor(cursor->output, &rects[i]);
wlr_render_texture_with_matrix(renderer, texture, matrix, 1.0f);
}
wlr_renderer_scissor(renderer, NULL);
surface_damage_finish:
pixman_region32_fini(&surface_damage);
}
void wlr_output_render_software_cursors(struct wlr_output *output,
pixman_region32_t *damage) {
int width, height;
wlr_output_transformed_resolution(output, &width, &height);
pixman_region32_t render_damage;
pixman_region32_init(&render_damage);
pixman_region32_union_rect(&render_damage, &render_damage, 0, 0,
width, height);
if (damage != NULL) {
// Damage tracking supported
pixman_region32_intersect(&render_damage, &render_damage, damage);
}
if (pixman_region32_not_empty(&render_damage)) {
struct wlr_output_cursor *cursor;
wl_list_for_each(cursor, &output->cursors, link) {
if (!cursor->enabled || !cursor->visible ||
output->hardware_cursor == cursor) {
continue;
}
output_cursor_render(cursor, &render_damage);
}
}
pixman_region32_fini(&render_damage);
}
/**
* Returns the cursor box, scaled for its output.
*/
static void output_cursor_get_box(struct wlr_output_cursor *cursor,
struct wlr_box *box) {
box->x = cursor->x - cursor->hotspot_x;
box->y = cursor->y - cursor->hotspot_y;
box->width = cursor->width;
box->height = cursor->height;
}
static void output_cursor_damage_whole(struct wlr_output_cursor *cursor) {
struct wlr_box box;
@ -738,9 +762,6 @@ static void output_cursor_commit(struct wlr_output_cursor *cursor,
}
if (output_cursor_attempt_hardware(cursor)) {
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
wlr_surface_send_frame_done(surface, &now);
return;
}