diff options
| -rw-r--r-- | include/types/wlr_output.h | 15 | ||||
| -rw-r--r-- | types/meson.build | 5 | ||||
| -rw-r--r-- | types/output/cursor.c | 573 | ||||
| -rw-r--r-- | types/output/output.c | 818 | ||||
| -rw-r--r-- | types/output/render.c | 281 | ||||
| -rw-r--r-- | types/output/transform.c | 25 | ||||
| -rw-r--r-- | types/wlr_output.c | 1697 |
7 files changed, 1716 insertions, 1698 deletions
diff --git a/include/types/wlr_output.h b/include/types/wlr_output.h new file mode 100644 index 00000000..cde64e3a --- /dev/null +++ b/include/types/wlr_output.h @@ -0,0 +1,15 @@ +#ifndef TYPES_WLR_OUTPUT_H +#define TYPES_WLR_OUTPUT_H + +#include <wlr/render/drm_format_set.h> +#include <wlr/types/wlr_output.h> + +void output_pending_resolution(struct wlr_output *output, int *width, + int *height); + +struct wlr_drm_format *output_pick_format(struct wlr_output *output, + const struct wlr_drm_format_set *display_formats); +void output_clear_back_buffer(struct wlr_output *output); +bool output_ensure_buffer(struct wlr_output *output); + +#endif diff --git a/types/meson.build b/types/meson.build index bb1e8c8f..89e834ce 100644 --- a/types/meson.build +++ b/types/meson.build @@ -3,6 +3,10 @@ wlr_files += files( 'data_device/wlr_data_offer.c', 'data_device/wlr_data_source.c', 'data_device/wlr_drag.c', + 'output/cursor.c', + 'output/output.c', + 'output/render.c', + 'output/transform.c', 'scene/subsurface_tree.c', 'scene/wlr_scene.c', 'scene/output_layout.c', @@ -43,7 +47,6 @@ wlr_files += files( 'wlr_output_layout.c', 'wlr_output_management_v1.c', 'wlr_output_power_management_v1.c', - 'wlr_output.c', 'wlr_pointer_constraints_v1.c', 'wlr_pointer_gestures_v1.c', 'wlr_pointer.c', diff --git a/types/output/cursor.c b/types/output/cursor.c new file mode 100644 index 00000000..dcaccade --- /dev/null +++ b/types/output/cursor.c @@ -0,0 +1,573 @@ +#include <assert.h> +#include <drm_fourcc.h> +#include <stdlib.h> +#include <wlr/interfaces/wlr_output.h> +#include <wlr/render/wlr_renderer.h> +#include <wlr/types/wlr_matrix.h> +#include <wlr/types/wlr_surface.h> +#include <wlr/util/log.h> +#include "backend/backend.h" +#include "render/allocator/allocator.h" +#include "render/swapchain.h" +#include "types/wlr_output.h" +#include "util/signal.h" + +static void output_cursor_damage_whole(struct wlr_output_cursor *cursor); + +void wlr_output_lock_software_cursors(struct wlr_output *output, bool lock) { + if (lock) { + ++output->software_cursor_locks; + } else { + assert(output->software_cursor_locks > 0); + --output->software_cursor_locks; + } + wlr_log(WLR_DEBUG, "%s hardware cursors on output '%s' (locks: %d)", + lock ? "Disabling" : "Enabling", output->name, + output->software_cursor_locks); + + if (output->software_cursor_locks > 0 && output->hardware_cursor != NULL) { + assert(output->impl->set_cursor); + output->impl->set_cursor(output, NULL, 0, 0); + output_cursor_damage_whole(output->hardware_cursor); + output->hardware_cursor = NULL; + } + + // If it's possible to use hardware cursors again, don't switch immediately + // since a recorder is likely to lock software cursors for the next frame + // 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, &box, transform, ow, oh); + + 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, + 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); +} + +static void output_cursor_damage_whole(struct wlr_output_cursor *cursor) { + struct wlr_box box; + output_cursor_get_box(cursor, &box); + + pixman_region32_t damage; + pixman_region32_init_rect(&damage, box.x, box.y, box.width, box.height); + + struct wlr_output_event_damage event = { + .output = cursor->output, + .damage = &damage, + }; + wlr_signal_emit_safe(&cursor->output->events.damage, &event); + + pixman_region32_fini(&damage); +} + +static void output_cursor_reset(struct wlr_output_cursor *cursor) { + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + } + if (cursor->surface != NULL) { + wl_list_remove(&cursor->surface_commit.link); + wl_list_remove(&cursor->surface_destroy.link); + if (cursor->visible) { + wlr_surface_send_leave(cursor->surface, cursor->output); + } + cursor->surface = NULL; + } +} + +static void output_cursor_update_visible(struct wlr_output_cursor *cursor) { + struct wlr_box output_box; + output_box.x = output_box.y = 0; + wlr_output_transformed_resolution(cursor->output, &output_box.width, + &output_box.height); + + struct wlr_box cursor_box; + output_cursor_get_box(cursor, &cursor_box); + + struct wlr_box intersection; + bool visible = + wlr_box_intersection(&intersection, &output_box, &cursor_box); + + if (cursor->surface != NULL) { + if (cursor->visible && !visible) { + wlr_surface_send_leave(cursor->surface, cursor->output); + } + if (!cursor->visible && visible) { + wlr_surface_send_enter(cursor->surface, cursor->output); + } + } + + cursor->visible = visible; +} + +static struct wlr_drm_format *output_pick_cursor_format(struct wlr_output *output) { + struct wlr_allocator *allocator = backend_get_allocator(output->backend); + assert(allocator != NULL); + + const struct wlr_drm_format_set *display_formats = NULL; + if (output->impl->get_cursor_formats) { + display_formats = + output->impl->get_cursor_formats(output, allocator->buffer_caps); + if (display_formats == NULL) { + wlr_log(WLR_ERROR, "Failed to get cursor display formats"); + return NULL; + } + } + + return output_pick_format(output, display_formats); +} + +static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor) { + struct wlr_output *output = cursor->output; + + float scale = output->scale; + enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL; + struct wlr_texture *texture = cursor->texture; + if (cursor->surface != NULL) { + texture = wlr_surface_get_texture(cursor->surface); + scale = cursor->surface->current.scale; + transform = cursor->surface->current.transform; + } + if (texture == NULL) { + return NULL; + } + + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + if (renderer == NULL) { + wlr_log(WLR_ERROR, "Failed to get backend renderer"); + return NULL; + } + + struct wlr_allocator *allocator = backend_get_allocator(output->backend); + if (allocator == NULL) { + wlr_log(WLR_ERROR, "Failed to get backend allocator"); + return NULL; + } + + int width = texture->width; + int height = texture->height; + if (output->impl->get_cursor_size) { + // Apply hardware limitations on buffer size + output->impl->get_cursor_size(cursor->output, &width, &height); + if ((int)texture->width > width || (int)texture->height > height) { + wlr_log(WLR_DEBUG, "Cursor texture too large (%dx%d), " + "exceeds hardware limitations (%dx%d)", texture->width, + texture->height, width, height); + return NULL; + } + } + + if (output->cursor_swapchain == NULL || + output->cursor_swapchain->width != width || + output->cursor_swapchain->height != height) { + struct wlr_drm_format *format = + output_pick_cursor_format(output); + if (format == NULL) { + wlr_log(WLR_ERROR, "Failed to pick cursor format"); + return NULL; + } + + wlr_swapchain_destroy(output->cursor_swapchain); + output->cursor_swapchain = wlr_swapchain_create(allocator, + width, height, format); + if (output->cursor_swapchain == NULL) { + wlr_log(WLR_ERROR, "Failed to create cursor swapchain"); + return NULL; + } + } + + struct wlr_buffer *buffer = + wlr_swapchain_acquire(output->cursor_swapchain, NULL); + if (buffer == NULL) { + return NULL; + } + + struct wlr_box cursor_box = { + .width = texture->width * output->scale / scale, + .height = texture->height * output->scale / scale, + }; + + float output_matrix[9]; + wlr_matrix_identity(output_matrix); + if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) { + struct wlr_box tr_size = { + .width = buffer->width, + .height = buffer->height, + }; + wlr_box_transform(&tr_size, &tr_size, output->transform, 0, 0); + + wlr_matrix_translate(output_matrix, buffer->width / 2.0, + buffer->height / 2.0); + wlr_matrix_transform(output_matrix, output->transform); + wlr_matrix_translate(output_matrix, - tr_size.width / 2.0, + - tr_size.height / 2.0); + } + + float matrix[9]; + wlr_matrix_project_box(matrix, &cursor_box, transform, 0, output_matrix); + + if (!wlr_renderer_begin_with_buffer(renderer, buffer)) { + wlr_buffer_unlock(buffer); + return NULL; + } + + wlr_renderer_clear(renderer, (float[]){ 0.0, 0.0, 0.0, 0.0 }); + wlr_render_texture_with_matrix(renderer, texture, matrix, 1.0); + + wlr_renderer_end(renderer); + + return buffer; +} + +static bool output_cursor_attempt_hardware(struct wlr_output_cursor *cursor) { + struct wlr_output *output = cursor->output; + + if (!output->impl->set_cursor || + output->software_cursor_locks > 0) { + return false; + } + + struct wlr_output_cursor *hwcur = output->hardware_cursor; + if (hwcur != NULL && hwcur != cursor) { + return false; + } + + struct wlr_texture *texture = cursor->texture; + if (cursor->surface != NULL) { + // TODO: try using the surface buffer directly + texture = wlr_surface_get_texture(cursor->surface); + } + + // If the cursor was hidden or was a software cursor, the hardware + // cursor position is outdated + output->impl->move_cursor(cursor->output, + (int)cursor->x, (int)cursor->y); + + struct wlr_buffer *buffer = NULL; + if (texture != NULL) { + buffer = render_cursor_buffer(cursor); + if (buffer == NULL) { + wlr_log(WLR_ERROR, "Failed to render cursor buffer"); + return false; + } + } + + struct wlr_box hotspot = { + .x = cursor->hotspot_x, + .y = cursor->hotspot_y, + }; + wlr_box_transform(&hotspot, &hotspot, + wlr_output_transform_invert(output->transform), + buffer ? buffer->width : 0, buffer ? buffer->height : 0); + + bool ok = output->impl->set_cursor(cursor->output, buffer, + hotspot.x, hotspot.y); + if (ok) { + wlr_buffer_unlock(output->cursor_front_buffer); + output->cursor_front_buffer = buffer; + output->hardware_cursor = cursor; + } else { + wlr_buffer_unlock(buffer); + } + return ok; +} + +bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor, + const uint8_t *pixels, int32_t stride, uint32_t width, uint32_t height, + int32_t hotspot_x, int32_t hotspot_y) { + struct wlr_renderer *renderer = + wlr_backend_get_renderer(cursor->output->backend); + if (!renderer) { + // if the backend has no renderer, we can't draw a cursor, but this is + // actually okay, for ex. with the noop backend + return true; + } + + output_cursor_reset(cursor); + + cursor->width = width; + cursor->height = height; + cursor->hotspot_x = hotspot_x; + cursor->hotspot_y = hotspot_y; + output_cursor_update_visible(cursor); + + wlr_texture_destroy(cursor->texture); + cursor->texture = NULL; + + cursor->enabled = false; + if (pixels != NULL) { + cursor->texture = wlr_texture_from_pixels(renderer, + DRM_FORMAT_ARGB8888, stride, width, height, pixels); + if (cursor->texture == NULL) { + return false; + } + cursor->enabled = true; + } + + if (output_cursor_attempt_hardware(cursor)) { + return true; + } + + wlr_log(WLR_DEBUG, "Falling back to software cursor on output '%s'", + cursor->output->name); + output_cursor_damage_whole(cursor); + return true; +} + +static void output_cursor_commit(struct wlr_output_cursor *cursor, + bool update_hotspot) { + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + } + + struct wlr_surface *surface = cursor->surface; + assert(surface != NULL); + + // Some clients commit a cursor surface with a NULL buffer to hide it. + cursor->enabled = wlr_surface_has_buffer(surface); + cursor->width = surface->current.width * cursor->output->scale; + cursor->height = surface->current.height * cursor->output->scale; + output_cursor_update_visible(cursor); + if (update_hotspot) { + cursor->hotspot_x -= surface->current.dx * cursor->output->scale; + cursor->hotspot_y -= surface->current.dy * cursor->output->scale; + } + + if (output_cursor_attempt_hardware(cursor)) { + return; + } + + // Fallback to software cursor + output_cursor_damage_whole(cursor); +} + +static void output_cursor_handle_commit(struct wl_listener *listener, + void *data) { + struct wlr_output_cursor *cursor = + wl_container_of(listener, cursor, surface_commit); + output_cursor_commit(cursor, true); +} + +static void output_cursor_handle_destroy(struct wl_listener *listener, + void *data) { + struct wlr_output_cursor *cursor = wl_container_of(listener, cursor, + surface_destroy); + output_cursor_reset(cursor); +} + +void wlr_output_cursor_set_surface(struct wlr_output_cursor *cursor, + struct wlr_surface *surface, int32_t hotspot_x, int32_t hotspot_y) { + hotspot_x *= cursor->output->scale; + hotspot_y *= cursor->output->scale; + + if (surface && surface == cursor->surface) { + // Only update the hotspot: surface hasn't changed + + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + } + cursor->hotspot_x = hotspot_x; + cursor->hotspot_y = hotspot_y; + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + } else { + struct wlr_buffer *buffer = cursor->output->cursor_front_buffer; + + struct wlr_box hotspot = { + .x = cursor->hotspot_x, + .y = cursor->hotspot_y, + }; + wlr_box_transform(&hotspot, &hotspot, + wlr_output_transform_invert(cursor->output->transform), + buffer ? buffer->width : 0, buffer ? buffer->height : 0); + + assert(cursor->output->impl->set_cursor); + cursor->output->impl->set_cursor(cursor->output, + buffer, hotspot.x, hotspot.y); + } + return; + } + + output_cursor_reset(cursor); + + cursor->surface = surface; + cursor->hotspot_x = hotspot_x; + cursor->hotspot_y = hotspot_y; + + if (surface != NULL) { + wl_signal_add(&surface->events.commit, &cursor->surface_commit); + wl_signal_add(&surface->events.destroy, &cursor->surface_destroy); + + cursor->visible = false; + output_cursor_commit(cursor, false); + } else { + cursor->enabled = false; + cursor->width = 0; + cursor->height = 0; + + if (cursor->output->hardware_cursor == cursor) { + assert(cursor->output->impl->set_cursor); + cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0); + } + } +} + +bool wlr_output_cursor_move(struct wlr_output_cursor *cursor, + double x, double y) { + if (cursor->x == x && cursor->y == y) { + return true; + } + + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + } + + bool was_visible = cursor->visible; + x *= cursor->output->scale; + y *= cursor->output->scale; + cursor->x = x; + cursor->y = y; + output_cursor_update_visible(cursor); + + if (!was_visible && !cursor->visible) { + // Cursor is still hidden, do nothing + return true; + } + + if (cursor->output->hardware_cursor != cursor) { + output_cursor_damage_whole(cursor); + return true; + } + + assert(cursor->output->impl->move_cursor); + return cursor->output->impl->move_cursor(cursor->output, (int)x, (int)y); +} + +struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output) { + struct wlr_output_cursor *cursor = + calloc(1, sizeof(struct wlr_output_cursor)); + if (cursor == NULL) { + return NULL; + } + cursor->output = output; + wl_signal_init(&cursor->events.destroy); + wl_list_init(&cursor->surface_commit.link); + cursor->surface_commit.notify = output_cursor_handle_commit; + wl_list_init(&cursor->surface_destroy.link); + cursor->surface_destroy.notify = output_cursor_handle_destroy; + wl_list_insert(&output->cursors, &cursor->link); + cursor->visible = true; // default position is at (0, 0) + return cursor; +} + +void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor) { + if (cursor == NULL) { + return; + } + output_cursor_reset(cursor); + wlr_signal_emit_safe(&cursor->events.destroy, cursor); + if (cursor->output->hardware_cursor == cursor) { + // If this cursor was the hardware cursor, disable it + if (cursor->output->impl->set_cursor) { + cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0); + } + cursor->output->hardware_cursor = NULL; + } + wlr_texture_destroy(cursor->texture); + wl_list_remove(&cursor->link); + free(cursor); +} diff --git a/types/output/output.c b/types/output/output.c new file mode 100644 index 00000000..0b431733 --- /dev/null +++ b/types/output/output.c @@ -0,0 +1,818 @@ +#define _POSIX_C_SOURCE 200809L +#include <assert.h> +#include <stdlib.h> +#include <wlr/interfaces/wlr_output.h> +#include <wlr/types/wlr_matrix.h> +#include <wlr/types/wlr_surface.h> +#include <wlr/util/log.h> +#include "render/swapchain.h" +#include "types/wlr_output.h" +#include "util/global.h" +#include "util/signal.h" + +#define OUTPUT_VERSION 3 + +static void send_geometry(struct wl_resource *resource) { + struct wlr_output *output = wlr_output_from_resource(resource); + wl_output_send_geometry(resource, 0, 0, + output->phys_width, output->phys_height, output->subpixel, + output->make, output->model, output->transform); +} + +static void send_current_mode(struct wl_resource *resource) { + struct wlr_output *output = wlr_output_from_resource(resource); + if (output->current_mode != NULL) { + struct wlr_output_mode *mode = output->current_mode; + wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, + mode->width, mode->height, mode->refresh); + } else { + // Output has no mode + wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, output->width, + output->height, output->refresh); + } +} + +static void send_scale(struct wl_resource *resource) { + struct wlr_output *output = wlr_output_from_resource(resource); + uint32_t version = wl_resource_get_version(resource); + if (version >= WL_OUTPUT_SCALE_SINCE_VERSION) { + wl_output_send_scale(resource, (uint32_t)ceil(output->scale)); + } +} + +static void send_done(struct wl_resource *resource) { + uint32_t version = wl_resource_get_version(resource); + if (version >= WL_OUTPUT_DONE_SINCE_VERSION) { + wl_output_send_done(resource); + } +} + +static void output_handle_resource_destroy(struct wl_resource *resource) { + wl_list_remove(wl_resource_get_link(resource)); +} + +static void output_handle_release(struct wl_client *client, + struct wl_resource *resource) { + wl_resource_destroy(resource); +} + +static const struct wl_output_interface output_impl = { + .release = output_handle_release, +}; + +static void output_bind(struct wl_client *wl_client, void *data, + uint32_t version, uint32_t id) { + // `output` can be NULL if the output global is being destroyed + struct wlr_output *output = data; + + struct wl_resource *resource = wl_resource_create(wl_client, + &wl_output_interface, version, id); + if (resource == NULL) { + wl_client_post_no_memory(wl_client); + return; + } + wl_resource_set_implementation(resource, &output_impl, output, + output_handle_resource_destroy); + + if (output == NULL) { + wl_list_init(wl_resource_get_link(resource)); + return; + } + + wl_list_insert(&output->resources, wl_resource_get_link(resource)); + + send_geometry(resource); + send_current_mode(resource); + send_scale(resource); + send_done(resource); + + struct wlr_output_event_bind evt = { + .output = output, + .resource = resource, + }; + + wlr_signal_emit_safe(&output->events.bind, &evt); +} + +void wlr_output_create_global(struct wlr_output *output) { + if (output->global != NULL) { + return; + } + output->global = wl_global_create(output->display, + &wl_output_interface, OUTPUT_VERSION, output, output_bind); + if (output->global == NULL) { + wlr_log(WLR_ERROR, "Failed to allocate wl_output global"); + } +} + +void wlr_output_destroy_global(struct wlr_output *output) { + if (output->global == NULL) { + return; + } + + // Make all output resources inert + struct wl_resource *resource, *tmp; + wl_resource_for_each_safe(resource, tmp, &output->resources) { + wl_resource_set_user_data(resource, NULL); + wl_list_remove(wl_resource_get_link(resource)); + wl_list_init(wl_resource_get_link(resource)); + } + + wlr_global_destroy_safe(output->global, output->display); + output->global = NULL; +} + +static void schedule_done_handle_idle_timer(void *data) { + struct wlr_output *output = data; + output->idle_done = NULL; + + struct wl_resource *resource; + wl_resource_for_each(resource, &output->resources) { + uint32_t version = wl_resource_get_version(resource); + if (version >= WL_OUTPUT_DONE_SINCE_VERSION) { + wl_output_send_done(resource); + } + } +} + +void wlr_output_schedule_done(struct wlr_output *output) { + if (output->idle_done != NULL) { + return; // Already scheduled + } + + struct wl_event_loop *ev = wl_display_get_event_loop(output->display); + output->idle_done = + wl_event_loop_add_idle(ev, schedule_done_handle_idle_timer, output); +} + +struct wlr_output *wlr_output_from_resource(struct wl_resource *resource) { + assert(wl_resource_instance_of(resource, &wl_output_interface, + &output_impl)); + return wl_resource_get_user_data(resource); +} + +void wlr_output_update_enabled(struct wlr_output *output, bool enabled) { + if (output->enabled == enabled) { + return; + } + + output->enabled = enabled; + wlr_signal_emit_safe(&output->events.enable, output); +} + +static void output_update_matrix(struct wlr_output *output) { + wlr_matrix_identity(output->transform_matrix); + if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) { + int tr_width, tr_height; + wlr_output_transformed_resolution(output, &tr_width, &tr_height); + + wlr_matrix_translate(output->transform_matrix, + output->width / 2.0, output->height / 2.0); + wlr_matrix_transform(output->transform_matrix, output->transform); + wlr_matrix_translate(output->transform_matrix, + - tr_width / 2.0, - tr_height / 2.0); + } +} + +void wlr_output_enable(struct wlr_output *output, bool enable) { + if (output->enabled == enable) { + output->pending.committed &= ~WLR_OUTPUT_STATE_ENABLED; + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_ENABLED; + output->pending.enabled = enable; +} + +static void output_state_clear_mode(struct wlr_output_state *state) { + if (!(state->committed & WLR_OUTPUT_STATE_MODE)) { + return; + } + + state->mode = NULL; + + state->committed &= ~WLR_OUTPUT_STATE_MODE; +} + +void wlr_output_set_mode(struct wlr_output *output, + struct wlr_output_mode *mode) { + output_state_clear_mode(&output->pending); + + if (output->current_mode == mode) { + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_MODE; + output->pending.mode_type = WLR_OUTPUT_STATE_MODE_FIXED; + output->pending.mode = mode; +} + +void wlr_output_set_custom_mode(struct wlr_output *output, int32_t width, + int32_t height, int32_t refresh) { + output_state_clear_mode(&output->pending); + + if (output->width == width && output->height == height && + output->refresh == refresh) { + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_MODE; + output->pending.mode_type = WLR_OUTPUT_STATE_MODE_CUSTOM; + output->pending.custom_mode.width = width; + output->pending.custom_mode.height = height; + output->pending.custom_mode.refresh = refresh; +} + +void wlr_output_update_mode(struct wlr_output *output, + struct wlr_output_mode *mode) { + output->current_mode = mode; + if (mode != NULL) { + wlr_output_update_custom_mode(output, mode->width, mode->height, + mode->refresh); + } else { + wlr_output_update_custom_mode(output, 0, 0, 0); + } +} + +void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width, + int32_t height, int32_t refresh) { + if (output->width == width && output->height == height && + output->refresh == refresh) { + return; + } + + output->width = width; + output->height = height; + output_update_matrix(output); + + output->refresh = refresh; + + if (output->swapchain != NULL && + (output->swapchain->width != output->width || + output->swapchain->height != output->height)) { + wlr_swapchain_destroy(output->swapchain); + output->swapchain = NULL; + } + + struct wl_resource *resource; + wl_resource_for_each(resource, &output->resources) { + send_current_mode(resource); + } + wlr_output_schedule_done(output); + + wlr_signal_emit_safe(&output->events.mode, output); +} + +void wlr_output_set_transform(struct wlr_output *output, + enum wl_output_transform transform) { + if (output->transform == transform) { + output->pending.committed &= ~WLR_OUTPUT_STATE_TRANSFORM; + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_TRANSFORM; + output->pending.transform = transform; +} + +void wlr_output_set_scale(struct wlr_output *output, float scale) { + if (output->scale == scale) { + output->pending.committed &= ~WLR_OUTPUT_STATE_SCALE; + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_SCALE; + output->pending.scale = scale; +} + +void wlr_output_enable_adaptive_sync(struct wlr_output *output, bool enabled) { + bool currently_enabled = + output->adaptive_sync_status != WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED; + if (currently_enabled == enabled) { + output->pending.committed &= ~WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED; + return; + } + + output->pending.committed |= WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED; + output->pending.adaptive_sync_enabled = enabled; +} + +void wlr_output_set_subpixel(struct wlr_output *output, + enum wl_output_subpixel subpixel) { + if (output->subpixel == subpixel) { + return; + } + + output->subpixel = subpixel; + + struct wl_resource *resource; + wl_resource_for_each(resource, &output->resources) { + send_geometry(resource); + } + wlr_output_schedule_done(output); +} + +void wlr_output_set_description(struct wlr_output *output, const char *desc) { + if (output->description != NULL && desc != NULL && + strcmp(output->description, desc) == 0) { + return; + } + + free(output->description); + if (desc != NULL) { + output->description = strdup(desc); + } else { + output->description = NULL; + } + + wlr_signal_emit_safe(&output->events.description, output); +} + +static void handle_display_destroy(struct wl_listener *listener, void *data) { + struct wlr_output *output = + wl_container_of(listener, output, display_destroy); + wlr_output_destroy_global(output); +} + +void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend, + const struct wlr_output_impl *impl, struct wl_display *display) { + assert(impl->commit); + if (impl->set_cursor || impl->move_cursor) { + assert(impl->set_cursor && impl->move_cursor); + } + output->backend = backend; + output->impl = impl; + output->display = display; + wl_list_init(&output->modes); + output->transform = WL_OUTPUT_TRANSFORM_NORMAL; + output->scale = 1; + output->commit_seq = 0; + wl_list_init(&output->cursors); + wl_list_init(&output->resources); + wl_signal_init(&output->events.frame); + wl_signal_init(&output->events.damage); + wl_signal_init(&output->events.needs_frame); + wl_signal_init(&output->events.precommit); + wl_signal_init(&output->events.commit); + wl_signal_init(&output->events.present); + wl_signal_init(&output->events.bind); + wl_signal_init(&output->events.enable); + wl_signal_init(&output->events.mode); + wl_signal_init(&output->events.description); + wl_signal_init(&output->events.destroy); + pixman_region32_init(&output->pending.damage); + + const char *no_hardware_cursors = getenv("WLR_NO_HARDWARE_CURSORS"); + if (no_hardware_cursors != NULL && strcmp(no_hardware_cursors, "1") == 0) { + wlr_log(WLR_DEBUG, + "WLR_NO_HARDWARE_CURSORS set, forcing software cursors"); + output->software_cursor_locks = 1; + } + + wlr_addon_set_init(&output->addons); + + output->display_destroy.notify = handle_display_destroy; + wl_display_add_destroy_listener(display, &output->display_destroy); +} + +void wlr_output_destroy(struct wlr_output *output) { + if (!output) { + return; + } + + wlr_buffer_unlock(output->front_buffer); + output->front_buffer = NULL; + + wl_list_remove(&output->display_destroy.link); + wlr_output_destroy_global(output); + output_clear_back_buffer(output); + + wlr_signal_emit_safe(&output->events.destroy, output); + wlr_addon_set_finish(&output->addons); + + // The backend is responsible for free-ing the list of modes + + struct wlr_output_cursor *cursor, *tmp_cursor; + wl_list_for_each_safe(cursor, tmp_cursor, &output->cursors, link) { + wlr_output_cursor_destroy(cursor); + } + + wlr_swapchain_destroy(output->cursor_swapchain); + wlr_buffer_unlock(output->cursor_front_buffer); + + wlr_swapchain_destroy(output->swapchain); + + if (output->idle_frame != NULL) { + wl_event_source_remove(output->idle_frame); + } + + if (output->idle_done != NULL) { + wl_event_source_remove(output->idle_done); + } + + free(output->description); + + pixman_region32_fini(&output->pending.damage); + + if (output->impl && output->impl->destroy) { + output->impl->destroy(output); + } else { + free(output); + } +} + +void wlr_output_transformed_resolution(struct wlr_output *output, + int *width, int *height) { + if (output->transform % 2 == 0) { + *width = output->width; + *height = output->height; + } else { + *width = output->height; + *height = output->width; + } +} + +void wlr_output_effective_resolution(struct wlr_output *output, + int *width, int *height) { + wlr_output_transformed_resolution(output, width, height); + *width /= output->scale; + *height /= output->scale; +} + +struct wlr_output_mode *wlr_output_preferred_mode(struct wlr_output *output) { + if (wl_list_empty(&output->modes)) { + return NULL; + } + + struct wlr_output_mode *mode; + wl_list_for_each(mode, &output->modes, link) { + if (mode->preferred) { + return mode; + } + } + + // No preferred mode, choose the first one + return wl_container_of(output->modes.next, mode, link); +} + +static void output_state_clear_buffer(struct wlr_output_state *state) { + if (!(state->committed & WLR_OUTPUT_STATE_BUFFER)) { + return; + } + + wlr_buffer_unlock(state->buffer); + state->buffer = NULL; + + state->committed &= ~WLR_OUTPUT_STATE_BUFFER; +} + +void wlr_output_set_damage(struct wlr_output *output, + pixman_region32_t *damage) { + pixman_region32_intersect_rect(&output->pending.damage, damage, + 0, 0, output->width, output->height); + output->pending.committed |= WLR_OUTPUT_STATE_DAMAGE; +} + +static void output_state_clear_gamma_lut(struct wlr_output_state *state) { + free(state->gamma_lut); + state->gamma_lut = NULL; + state->committed &= ~WLR_OUTPUT_STATE_GAMMA_LUT; +} + +static void output_state_clear(struct wlr_output_state *state) { + output_state_clear_buffer(state); + output_state_clear_gamma_lut(state); + pixman_region32_clear(&state->damage); + state->committed = 0; +} + +void output_pending_resolution(struct wlr_output *output, int *width, + int *height) { + if (output->pending.committed & WLR_OUTPUT_STATE_MODE) { + switch (output->pending.mode_type) { + case WLR_OUTPUT_STATE_MODE_FIXED: + *width = output->pending.mode->width; + *height = output->pending.mode->height; + return; + case WLR_OUTPUT_STATE_MODE_CUSTOM: + *width = output->pending.custom_mode.width; + *height = output->pending.custom_mode.height; + return; + } + abort(); + } else { + *width = output->width; + *height = output->height; + } +} + +static bool output_basic_test(struct wlr_output *output) { + if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { + if (output->frame_pending) { + wlr_log(WLR_DEBUG, "Tried to commit a buffer while a frame is pending"); + return false; + } + + if (output->back_buffer == NULL) { + if (output->attach_render_locks > 0) { + wlr_log(WLR_DEBUG, "Direct scan-out disabled by lock"); + return false; + } + + // If the output has at least one software cursor, refuse to attach the + // buffer + struct wlr_output_cursor *cursor; + wl_list_for_each(cursor, &output->cursors, link) { + if (cursor->enabled && cursor->visible && + cursor != output->hardware_cursor) { + wlr_log(WLR_DEBUG, + "Direct scan-out disabled by software cursor"); + return false; + } + } + + // If the size doesn't match, reject buffer (scaling is not + // supported) + int pending_width, pending_height; + output_pending_resolution(output, &pending_width, &pending_height); + if (output->pending.buffer->width != pending_width || + output->pending.buffer->height != pending_height) { + wlr_log(WLR_DEBUG, "Direct scan-out buffer size mismatch"); + return false; + } + } + } + + bool enabled = output->enabled; + if (output->pending.committed & WLR_OUTPUT_STATE_ENABLED) { + enabled = output->pending.enabled; + } + + if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { + wlr_log(WLR_DEBUG, "Tried to commit a buffer on a disabled output"); + return false; + } + if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_MODE) { + wlr_log(WLR_DEBUG, "Tried to modeset a disabled output"); + return false; + } + if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) { + wlr_log(WLR_DEBUG, "Tried to enable adaptive sync on a disabled output"); + return false; + } + if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_GAMMA_LUT) { + wlr_log(WLR_DEBUG, "Tried to set the gamma lut on a disabled output"); + return false; + } + + return true; +} + +bool wlr_output_test(struct wlr_output *output) { + if (!output_basic_test(output)) { + return false; + } + if (!output_ensure_buffer(output)) { + return false; + } + if (!output->impl->test) { + return true; + } + return output->impl->test(output); +} + +bool wlr_output_commit(struct wlr_output *output) { + if (!output_basic_test(output)) { + wlr_log(WLR_ERROR, "Basic output test failed for %s", output->name); + return false; + } + + if (!output_ensure_buffer(output)) { + return false; + } + + if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) && + output->idle_frame != NULL) { + wl_event_source_remove(output->idle_frame); + output->idle_frame = NULL; + } + + struct timespec now; + clock_gettime(CLOCK_MONOTONIC, &now); + + struct wlr_output_event_precommit pre_event = { + .output = output, + .when = &now, + }; + wlr_signal_emit_safe(&output->events.precommit, &pre_event); + + // output_clear_back_buffer detaches the buffer from the renderer. This is + // important to do before calling impl->commit(), because this marks an + // implicit rendering synchronization point. The backend needs it to avoid + // displaying a buffer when asynchronous GPU work isn't finished. + struct wlr_buffer *back_buffer = NULL; + if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) && + output->back_buffer != NULL) { + back_buffer = wlr_buffer_lock(output->back_buffer); + output_clear_back_buffer(output); + } + + if (!output->impl->commit(output)) { + wlr_buffer_unlock(back_buffer); + output_state_clear(&output->pending); + return false; + } + + if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { + 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, &now); + } + } + + output->commit_seq++; + + bool scale_updated = output->pending.committed & WLR_OUTPUT_STATE_SCALE; + if (scale_updated) { + output->scale = output->pending.scale; + } + + if (output->pending.committed & WLR_OUTPUT_STATE_TRANSFORM) { + output->transform = output->pending.transform; + output_update_matrix(output); + } + + bool geometry_updated = output->pending.committed & + (WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_TRANSFORM); + if (geometry_updated || scale_updated) { + struct wl_resource *resource; + wl_resource_for_each(resource, &output->resources) { + if (geometry_updated) { + send_geometry(resource); + } + if (scale_updated) { + send_scale(resource); + } + } + wlr_output_schedule_done(output); + } + + // Unset the front-buffer when a new buffer will replace it or when the + // output is getting disabled + if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) || + ((output->pending.committed & WLR_OUTPUT_STATE_ENABLED) && + !output->pending.enabled)) { + wlr_buffer_unlock(output->front_buffer); + output->front_buffer = NULL; + } + + if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { + output->frame_pending = true; + output->needs_frame = false; + } + + if (back_buffer != NULL) { + wlr_swapchain_set_buffer_submitted(output->swapchain, back_buffer); + wlr_buffer_unlock(output->front_buffer); + output->front_buffer = back_buffer; + } + + uint32_t committed = output->pending.committed; + output_state_clear(&output->pending); + + struct wlr_output_event_commit event = { + .output = output, + .committed = committed, + .when = &now, + }; + wlr_signal_emit_safe(&output->events.commit, &event); + + return true; +} + +void wlr_output_rollback(struct wlr_output *output) { + output_clear_back_buffer(output); + output_state_clear(&output->pending); +} + +void wlr_output_attach_buffer(struct wlr_output *output, + struct wlr_buffer *buffer) { + output_state_clear_buffer(&output->pending); + output->pending.committed |= WLR_OUTPUT_STATE_BUFFER; + output->pending.buffer = wlr_buffer_lock(buffer); +} + +void wlr_output_send_frame(struct wlr_output *output) { + output->frame_pending = false; + if (output->enabled) { + wlr_signal_emit_safe(&output->events.frame, output); + } +} + +static void schedule_frame_handle_idle_timer(void *data) { + struct wlr_output *output = data; + output->idle_frame = NULL; + if (!output->frame_pending) { + wlr_output_send_frame(output); + } +} + +void wlr_output_schedule_frame(struct wlr_output *output) { + // Make sure the compositor commits a new frame. This is necessary to make + // clients which ask for frame callbacks without submitting a new buffer + // work. + wlr_output_update_needs_frame(output); + + if (output->frame_pending || output->idle_frame != NULL) { + return; + } + + // We're using an idle timer here in case a buffer swap happens right after + // this function is called + struct wl_event_loop *ev = wl_display_get_event_loop(output->display); + output->idle_frame = + wl_event_loop_add_idle(ev, schedule_frame_handle_idle_timer, output); +} + +void wlr_output_send_present(struct wlr_output *output, + struct wlr_output_event_present *event) { + assert(event); + event->output = output; + + if (event->presented && event->when == NULL) { + struct timespec now; + clockid_t clock = wlr_backend_get_presentation_clock(output->backend); + errno = 0; + if (clock_gettime(clock, &now) != 0) { + wlr_log_errno(WLR_ERROR, "failed to send output present event: " + "failed to read clock"); + return; + } + event->when = &now; + } + + wlr_signal_emit_safe(&output->events.present, event); +} + +void wlr_output_set_gamma(struct wlr_output *output, size_t size, + const uint16_t *r, const uint16_t *g, const uint16_t *b) { + output_state_clear_gamma_lut(&output->pending); + + output->pending.gamma_lut_size = size; + output->pending.gamma_lut = malloc(3 * size * sizeof(uint16_t)); + if (output->pending.gamma_lut == NULL) { + wlr_log_errno(WLR_ERROR, "Allocation failed"); + return; + } + memcpy(output->pending.gamma_lut, r, size * sizeof(uint16_t)); + memcpy(output->pending.gamma_lut + size, g, size * sizeof(uint16_t)); + memcpy(output->pending.gamma_lut + 2 * size, b, size * sizeof(uint16_t)); + + output->pending.committed |= WLR_OUTPUT_STATE_GAMMA_LUT; +} + +size_t wlr_output_get_gamma_size(struct wlr_output *output) { + if (!output->impl->get_gamma_size) { + return 0; + } + return output->impl->get_gamma_size(output); +} + +bool wlr_output_export_dmabuf(struct wlr_output *output, + struct wlr_dmabuf_attributes *attribs) { + if (output->front_buffer == NULL) { + return false; + } + + struct wlr_dmabuf_attributes buf_attribs = {0}; + if (!wlr_buffer_get_dmabuf(output->front_buffer, &buf_attribs)) { + return false; + } + return wlr_dmabuf_attributes_copy(attribs, &buf_attribs); +} + +void wlr_output_update_needs_frame(struct wlr_output *output) { + if (output->needs_frame) { + return; + } + output->needs_frame = true; + wlr_signal_emit_safe(&output->events.needs_frame, output); +} + +void wlr_output_damage_whole(struct wlr_output *output) { + int width, height; + wlr_output_transformed_resolution(output, &width, &height); + + pixman_region32_t damage; + pixman_region32_init_rect(&damage, 0, 0, width, height); + + struct wlr_output_event_damage event = { + .output = output, + .damage = &damage, + }; + wlr_signal_emit_safe(&output->events.damage, &event); + + pixman_region32_fini(&damage); +} diff --git a/types/output/render.c b/types/output/render.c new file mode 100644 index 00000000..b37b8ea1 --- /dev/null +++ b/types/output/render.c @@ -0,0 +1,281 @@ +#include <assert.h> +#include <drm_fourcc.h> +#include <stdlib.h> +#include <wlr/interfaces/wlr_output.h> +#include <wlr/render/interface.h> +#include <wlr/util/log.h> +#include "backend/backend.h" +#include "render/allocator/allocator.h" +#include "render/drm_format_set.h" +#include "render/swapchain.h" +#include "render/wlr_renderer.h" +#include "types/wlr_output.h" + +/** + * Ensure the output has a suitable swapchain. The swapchain is re-created if + * necessary. + * + * If allow_modifiers is set to true, the swapchain's format may use modifiers. + * If set to false, the swapchain's format is guaranteed to not use modifiers. + */ +static bool output_create_swapchain(struct wlr_output *output, + bool allow_modifiers) { + int width, height; + output_pending_resolution(output, &width, &height); + + if (output->swapchain != NULL && output->swapchain->width == width && + output->swapchain->height == height && + (allow_modifiers || output->swapchain->format->len == 0)) { + return true; + } + + struct wlr_allocator *allocator = backend_get_allocator(output->backend); + if (allocator == NULL) { + wlr_log(WLR_ERROR, "Failed to get backend allocator"); + return false; + } + + const struct wlr_drm_format_set *display_formats = NULL; + if (output->impl->get_primary_formats) { + display_formats = + output->impl->get_primary_formats(output, allocator->buffer_caps); + if (display_formats == NULL) { + wlr_log(WLR_ERROR, "Failed to get primary display formats"); + return false; + } + } + + struct wlr_drm_format *format = output_pick_format(output, display_formats); + if (format == NULL) { + wlr_log(WLR_ERROR, "Failed to pick primary buffer format for output '%s'", + output->name); + return false; + } + wlr_log(WLR_DEBUG, "Choosing primary buffer format 0x%"PRIX32" for output '%s'", + format->format, output->name); + + if (!allow_modifiers && (format->len != 1 || format->modifiers[0] != DRM_FORMAT_MOD_LINEAR)) { + format->len = 0; + } + + struct wlr_swapchain *swapchain = + wlr_swapchain_create(allocator, width, height, format); + free(format); + if (swapchain == NULL) { + wlr_log(WLR_ERROR, "Failed to create output swapchain"); + return false; + } + + wlr_swapchain_destroy(output->swapchain); + output->swapchain = swapchain; + + return true; +} + +static bool output_attach_back_buffer(struct wlr_output *output, + int *buffer_age) { + assert(output->back_buffer == NULL); + + if (!output_create_swapchain(output, true)) { + return false; + } + + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + assert(renderer != NULL); + + struct wlr_buffer *buffer = + wlr_swapchain_acquire(output->swapchain, buffer_age); + if (buffer == NULL) { + return false; + } + + if (!renderer_bind_buffer(renderer, buffer)) { + wlr_buffer_unlock(buffer); + return false; + } + + output->back_buffer = buffer; + return true; +} + +void output_clear_back_buffer(struct wlr_output *output) { + if (output->back_buffer == NULL) { + return; + } + + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + assert(renderer != NULL); + + renderer_bind_buffer(renderer, NULL); + + wlr_buffer_unlock(output->back_buffer); + output->back_buffer = NULL; +} + +bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age) { + if (!output_attach_back_buffer(output, buffer_age)) { + return false; + } + wlr_output_attach_buffer(output, output->back_buffer); + return true; +} + +static bool output_attach_empty_buffer(struct wlr_output *output) { + assert(!(output->pending.committed & WLR_OUTPUT_STATE_BUFFER)); + + if (!wlr_output_attach_render(output, NULL)) { + return false; + } + + int width, height; + output_pending_resolution(output, &width, &height); + + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + wlr_renderer_begin(renderer, width, height); + wlr_renderer_clear(renderer, (float[]){0, 0, 0, 0}); + wlr_renderer_end(renderer); + + return true; +} + +bool output_ensure_buffer(struct wlr_output *output) { + // If we're lighting up an output or changing its mode, make sure to + // provide a new buffer + bool needs_new_buffer = false; + if ((output->pending.committed & WLR_OUTPUT_STATE_ENABLED) && + output->pending.enabled) { + needs_new_buffer = true; + } + if (output->pending.committed & WLR_OUTPUT_STATE_MODE) { + needs_new_buffer = true; + } + if (!needs_new_buffer || + (output->pending.committed & WLR_OUTPUT_STATE_BUFFER)) { + return true; + } + + // If the backend doesn't necessarily need a new buffer on modeset, don't + // bother allocating one. + if (!output->impl->test || output->impl->test(output)) { + return true; + } + + wlr_log(WLR_DEBUG, "Attaching empty buffer to output for modeset"); + + if (!output_attach_empty_buffer(output)) { + goto error; + } + if (!output->impl->test || output->impl->test(output)) { + return true; + } + + output_clear_back_buffer(output); + output->pending.committed &= ~WLR_OUTPUT_STATE_BUFFER; + + if (output->swapchain->format->len == 0) { + return false; + } + + // The test failed for a buffer which has modifiers, try disabling + // modifiers to see if that makes a difference. + wlr_log(WLR_DEBUG, "Output modeset test failed, retrying without modifiers"); + + if (!output_create_swapchain(output, false)) { + return false; + } + if (!output_attach_empty_buffer(output)) { + goto error; + } + if (!output->impl->test(output)) { + goto error; + } + return true; + +error: + output_clear_back_buffer(output); + output->pending.committed &= ~WLR_OUTPUT_STATE_BUFFER; + return false; +} + +void wlr_output_lock_attach_render(struct wlr_output *output, bool lock) { + if (lock) { + ++output->attach_render_locks; + } else { + assert(output->attach_render_locks > 0); + --output->attach_render_locks; + } + wlr_log(WLR_DEBUG, "%s direct scan-out on output '%s' (locks: %d)", + lock ? "Disabling" : "Enabling", output->name, + output->attach_render_locks); +} + +struct wlr_drm_format *output_pick_format(struct wlr_output *output, + const struct wlr_drm_format_set *display_formats) { + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + struct wlr_allocator *allocator = backend_get_allocator(output->backend); + assert(renderer != NULL && allocator != NULL); + + const struct wlr_drm_format_set *render_formats = + wlr_renderer_get_render_formats(renderer); + if (render_formats == NULL) { + wlr_log(WLR_ERROR, "Failed to get render formats"); + return NULL; + } + + struct wlr_drm_format *format = NULL; + const uint32_t candidates[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888 }; + for (size_t i = 0; i < sizeof(candidates) / sizeof(candidates[0]); i++) { + uint32_t fmt = candidates[i]; + + const struct wlr_drm_format *render_format = + wlr_drm_format_set_get(render_formats, fmt); + if (render_format == NULL) { + wlr_log(WLR_DEBUG, "Renderer doesn't support format 0x%"PRIX32, fmt); + continue; + } + + if (display_formats != NULL) { + const struct wlr_drm_format *display_format = + wlr_drm_format_set_get(display_formats, fmt); + if (display_format == NULL) { + wlr_log(WLR_DEBUG, "Output doesn't support format 0x%"PRIX32, fmt); + continue; + } + format = wlr_drm_format_intersect(display_format, render_format); + } else { + // The output can display any format + format = wlr_drm_format_dup(render_format); + } + + if (format == NULL) { + wlr_log(WLR_DEBUG, "Failed to intersect display and render " + "modifiers for format 0x%"PRIX32, fmt); + } else { + break; + } + } + if (format == NULL) { + wlr_log(WLR_ERROR, "Failed to choose a format for output '%s'", + output->name); + return NULL; + } + + return format; +} + +uint32_t wlr_output_preferred_read_format(struct wlr_output *output) { + struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); + if (!renderer->impl->preferred_read_format || !renderer->impl->read_pixels) { + return DRM_FORMAT_INVALID; + } + + if (!output_attach_back_buffer(output, NULL)) { + return false; + } + + uint32_t fmt = renderer->impl->preferred_read_format(renderer); + + output_clear_back_buffer(output); + + return fmt; +} diff --git a/types/output/transform.c b/types/output/transform.c new file mode 100644 index 00000000..2b18d487 --- /dev/null +++ b/types/output/transform.c @@ -0,0 +1,25 @@ +#include <wlr/types/wlr_output.h> + +enum wl_output_transform wlr_output_transform_invert( + enum wl_output_transform tr) { + if ((tr & WL_OUTPUT_TRANSFORM_90) && !(tr & WL_OUTPUT_TRANSFORM_FLIPPED)) { + tr ^= WL_OUTPUT_TRANSFORM_180; + } + return tr; +} + +enum wl_output_transform wlr_output_transform_compose( + enum wl_output_transform tr_a, enum wl_output_transform tr_b) { + uint32_t flipped = (tr_a ^ tr_b) & WL_OUTPUT_TRANSFORM_FLIPPED; + uint32_t rotation_mask = WL_OUTPUT_TRANSFORM_90 | WL_OUTPUT_TRANSFORM_180; + uint32_t rotated; + if (tr_b & WL_OUTPUT_TRANSFORM_FLIPPED) { + // When a rotation of k degrees is followed by a flip, the + // equivalent transform is a flip followed by a rotation of + // -k degrees. + rotated = (tr_b - tr_a) & rotation_mask; + } else { + rotated = (tr_a + tr_b) & rotation_mask; + } + return flipped | rotated; +} diff --git a/types/wlr_output.c b/types/wlr_output.c deleted file mode 100644 index b6167d6d..00000000 --- a/types/wlr_output.c +++ /dev/null @@ -1,1697 +0,0 @@ -#define _POSIX_C_SOURCE 200809L -#include <assert.h> -#include <drm_fourcc.h> -#include <stdlib.h> -#include <string.h> -#include <tgmath.h> -#include <time.h> -#include <wayland-server-core.h> -#include <wlr/interfaces/wlr_output.h> -#include <wlr/render/interface.h> -#include <wlr/render/wlr_renderer.h> -#include <wlr/types/wlr_matrix.h> -#include <wlr/types/wlr_output.h> -#include <wlr/types/wlr_seat.h> -#include <wlr/types/wlr_surface.h> -#include <wlr/util/box.h> -#include <wlr/util/log.h> -#include <wlr/util/region.h> -#include "backend/backend.h" -#include "render/allocator/allocator.h" -#include "render/drm_format_set.h" -#include "render/swapchain.h" -#include "render/wlr_renderer.h" -#include "util/global.h" -#include "util/signal.h" - -#define OUTPUT_VERSION 3 - -static void send_geometry(struct wl_resource *resource) { - struct wlr_output *output = wlr_output_from_resource(resource); - wl_output_send_geometry(resource, 0, 0, - output->phys_width, output->phys_height, output->subpixel, - output->make, output->model, output->transform); -} - -static void send_current_mode(struct wl_resource *resource) { - struct wlr_output *output = wlr_output_from_resource(resource); - if (output->current_mode != NULL) { - struct wlr_output_mode *mode = output->current_mode; - wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, - mode->width, mode->height, mode->refresh); - } else { - // Output has no mode - wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, output->width, - output->height, output->refresh); - } -} - -static void send_scale(struct wl_resource *resource) { - struct wlr_output *output = wlr_output_from_resource(resource); - uint32_t version = wl_resource_get_version(resource); - if (version >= WL_OUTPUT_SCALE_SINCE_VERSION) { - wl_output_send_scale(resource, (uint32_t)ceil(output->scale)); - } -} - -static void send_done(struct wl_resource *resource) { - uint32_t version = wl_resource_get_version(resource); - if (version >= WL_OUTPUT_DONE_SINCE_VERSION) { - wl_output_send_done(resource); - } -} - -static void output_handle_resource_destroy(struct wl_resource *resource) { - wl_list_remove(wl_resource_get_link(resource)); -} - -static void output_handle_release(struct wl_client *client, - struct wl_resource *resource) { - wl_resource_destroy(resource); -} - -static const struct wl_output_interface output_impl = { - .release = output_handle_release, -}; - -static void output_bind(struct wl_client *wl_client, void *data, - uint32_t version, uint32_t id) { - // `output` can be NULL if the output global is being destroyed - struct wlr_output *output = data; - - struct wl_resource *resource = wl_resource_create(wl_client, - &wl_output_interface, version, id); - if (resource == NULL) { - wl_client_post_no_memory(wl_client); - return; - } - wl_resource_set_implementation(resource, &output_impl, output, - output_handle_resource_destroy); - - if (output == NULL) { - wl_list_init(wl_resource_get_link(resource)); - return; - } - - wl_list_insert(&output->resources, wl_resource_get_link(resource)); - - send_geometry(resource); - send_current_mode(resource); - send_scale(resource); - send_done(resource); - - struct wlr_output_event_bind evt = { - .output = output, - .resource = resource, - }; - - wlr_signal_emit_safe(&output->events.bind, &evt); -} - -void wlr_output_create_global(struct wlr_output *output) { - if (output->global != NULL) { - return; - } - output->global = wl_global_create(output->display, - &wl_output_interface, OUTPUT_VERSION, output, output_bind); - if (output->global == NULL) { - wlr_log(WLR_ERROR, "Failed to allocate wl_output global"); - } -} - -void wlr_output_destroy_global(struct wlr_output *output) { - if (output->global == NULL) { - return; - } - - // Make all output resources inert - struct wl_resource *resource, *tmp; - wl_resource_for_each_safe(resource, tmp, &output->resources) { - wl_resource_set_user_data(resource, NULL); - wl_list_remove(wl_resource_get_link(resource)); - wl_list_init(wl_resource_get_link(resource)); - } - - wlr_global_destroy_safe(output->global, output->display); - output->global = NULL; -} - -void wlr_output_update_enabled(struct wlr_output *output, bool enabled) { - if (output->enabled == enabled) { - return; - } - - output->enabled = enabled; - wlr_signal_emit_safe(&output->events.enable, output); -} - -static void output_update_matrix(struct wlr_output *output) { - wlr_matrix_identity(output->transform_matrix); - if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) { - int tr_width, tr_height; - wlr_output_transformed_resolution(output, &tr_width, &tr_height); - - wlr_matrix_translate(output->transform_matrix, - output->width / 2.0, output->height / 2.0); - wlr_matrix_transform(output->transform_matrix, output->transform); - wlr_matrix_translate(output->transform_matrix, - - tr_width / 2.0, - tr_height / 2.0); - } -} - -void wlr_output_enable(struct wlr_output *output, bool enable) { - if (output->enabled == enable) { - output->pending.committed &= ~WLR_OUTPUT_STATE_ENABLED; - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_ENABLED; - output->pending.enabled = enable; -} - -static void output_state_clear_mode(struct wlr_output_state *state) { - if (!(state->committed & WLR_OUTPUT_STATE_MODE)) { - return; - } - - state->mode = NULL; - - state->committed &= ~WLR_OUTPUT_STATE_MODE; -} - -void wlr_output_set_mode(struct wlr_output *output, - struct wlr_output_mode *mode) { - output_state_clear_mode(&output->pending); - - if (output->current_mode == mode) { - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_MODE; - output->pending.mode_type = WLR_OUTPUT_STATE_MODE_FIXED; - output->pending.mode = mode; -} - -void wlr_output_set_custom_mode(struct wlr_output *output, int32_t width, - int32_t height, int32_t refresh) { - output_state_clear_mode(&output->pending); - - if (output->width == width && output->height == height && - output->refresh == refresh) { - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_MODE; - output->pending.mode_type = WLR_OUTPUT_STATE_MODE_CUSTOM; - output->pending.custom_mode.width = width; - output->pending.custom_mode.height = height; - output->pending.custom_mode.refresh = refresh; -} - -void wlr_output_update_mode(struct wlr_output *output, - struct wlr_output_mode *mode) { - output->current_mode = mode; - if (mode != NULL) { - wlr_output_update_custom_mode(output, mode->width, mode->height, - mode->refresh); - } else { - wlr_output_update_custom_mode(output, 0, 0, 0); - } -} - -void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width, - int32_t height, int32_t refresh) { - if (output->width == width && output->height == height && - output->refresh == refresh) { - return; - } - - output->width = width; - output->height = height; - output_update_matrix(output); - - output->refresh = refresh; - - if (output->swapchain != NULL && - (output->swapchain->width != output->width || - output->swapchain->height != output->height)) { - wlr_swapchain_destroy(output->swapchain); - output->swapchain = NULL; - } - - struct wl_resource *resource; - wl_resource_for_each(resource, &output->resources) { - send_current_mode(resource); - } - wlr_output_schedule_done(output); - - wlr_signal_emit_safe(&output->events.mode, output); -} - -void wlr_output_set_transform(struct wlr_output *output, - enum wl_output_transform transform) { - if (output->transform == transform) { - output->pending.committed &= ~WLR_OUTPUT_STATE_TRANSFORM; - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_TRANSFORM; - output->pending.transform = transform; -} - -void wlr_output_set_scale(struct wlr_output *output, float scale) { - if (output->scale == scale) { - output->pending.committed &= ~WLR_OUTPUT_STATE_SCALE; - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_SCALE; - output->pending.scale = scale; -} - -void wlr_output_enable_adaptive_sync(struct wlr_output *output, bool enabled) { - bool currently_enabled = - output->adaptive_sync_status != WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED; - if (currently_enabled == enabled) { - output->pending.committed &= ~WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED; - return; - } - - output->pending.committed |= WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED; - output->pending.adaptive_sync_enabled = enabled; -} - -void wlr_output_set_subpixel(struct wlr_output *output, - enum wl_output_subpixel subpixel) { - if (output->subpixel == subpixel) { - return; - } - - output->subpixel = subpixel; - - struct wl_resource *resource; - wl_resource_for_each(resource, &output->resources) { - send_geometry(resource); - } - wlr_output_schedule_done(output); -} - -void wlr_output_set_description(struct wlr_output *output, const char *desc) { - if (output->description != NULL && desc != NULL && - strcmp(output->description, desc) == 0) { - return; - } - - free(output->description); - if (desc != NULL) { - output->description = strdup(desc); - } else { - output->description = NULL; - } - - wlr_signal_emit_safe(&output->events.description, output); -} - -static void schedule_done_handle_idle_timer(void *data) { - struct wlr_output *output = data; - output->idle_done = NULL; - - struct wl_resource *resource; - wl_resource_for_each(resource, &output->resources) { - uint32_t version = wl_resource_get_version(resource); - if (version >= WL_OUTPUT_DONE_SINCE_VERSION) { - wl_output_send_done(resource); - } - } -} - -void wlr_output_schedule_done(struct wlr_output *output) { - if (output->idle_done != NULL) { - return; // Already scheduled - } - - struct wl_event_loop *ev = wl_display_get_event_loop(output->display); - output->idle_done = - wl_event_loop_add_idle(ev, schedule_done_handle_idle_timer, output); -} - -static void handle_display_destroy(struct wl_listener *listener, void *data) { - struct wlr_output *output = - wl_container_of(listener, output, display_destroy); - wlr_output_destroy_global(output); -} - -void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend, - const struct wlr_output_impl *impl, struct wl_display *display) { - assert(impl->commit); - if (impl->set_cursor || impl->move_cursor) { - assert(impl->set_cursor && impl->move_cursor); - } - output->backend = backend; - output->impl = impl; - output->display = display; - wl_list_init(&output->modes); - output->transform = WL_OUTPUT_TRANSFORM_NORMAL; - output->scale = 1; - output->commit_seq = 0; - wl_list_init(&output->cursors); - wl_list_init(&output->resources); - wl_signal_init(&output->events.frame); - wl_signal_init(&output->events.damage); - wl_signal_init(&output->events.needs_frame); - wl_signal_init(&output->events.precommit); - wl_signal_init(&output->events.commit); - wl_signal_init(&output->events.present); - wl_signal_init(&output->events.bind); - wl_signal_init(&output->events.enable); - wl_signal_init(&output->events.mode); - wl_signal_init(&output->events.description); - wl_signal_init(&output->events.destroy); - pixman_region32_init(&output->pending.damage); - - const char *no_hardware_cursors = getenv("WLR_NO_HARDWARE_CURSORS"); - if (no_hardware_cursors != NULL && strcmp(no_hardware_cursors, "1") == 0) { - wlr_log(WLR_DEBUG, - "WLR_NO_HARDWARE_CURSORS set, forcing software cursors"); - output->software_cursor_locks = 1; - } - - wlr_addon_set_init(&output->addons); - - output->display_destroy.notify = handle_display_destroy; - wl_display_add_destroy_listener(display, &output->display_destroy); -} - -static void output_clear_back_buffer(struct wlr_output *output); - -void wlr_output_destroy(struct wlr_output *output) { - if (!output) { - return; - } - - wlr_buffer_unlock(output->front_buffer); - output->front_buffer = NULL; - - wl_list_remove(&output->display_destroy.link); - wlr_output_destroy_global(output); - output_clear_back_buffer(output); - - wlr_signal_emit_safe(&output->events.destroy, output); - wlr_addon_set_finish(&output->addons); - - // The backend is responsible for free-ing the list of modes - - struct wlr_output_cursor *cursor, *tmp_cursor; - wl_list_for_each_safe(cursor, tmp_cursor, &output->cursors, link) { - wlr_output_cursor_destroy(cursor); - } - - wlr_swapchain_destroy(output->cursor_swapchain); - wlr_buffer_unlock(output->cursor_front_buffer); - - wlr_swapchain_destroy(output->swapchain); - - if (output->idle_frame != NULL) { - wl_event_source_remove(output->idle_frame); - } - - if (output->idle_done != NULL) { - wl_event_source_remove(output->idle_done); - } - - free(output->description); - - pixman_region32_fini(&output->pending.damage); - - if (output->impl && output->impl->destroy) { - output->impl->destroy(output); - } else { - free(output); - } -} - -void wlr_output_transformed_resolution(struct wlr_output *output, - int *width, int *height) { - if (output->transform % 2 == 0) { - *width = output->width; - *height = output->height; - } else { - *width = output->height; - *height = output->width; - } -} - -void wlr_output_effective_resolution(struct wlr_output *output, - int *width, int *height) { - wlr_output_transformed_resolution(output, width, height); - *width /= output->scale; - *height /= output->scale; -} - -struct wlr_output_mode *wlr_output_preferred_mode(struct wlr_output *output) { - if (wl_list_empty(&output->modes)) { - return NULL; - } - - struct wlr_output_mode *mode; - wl_list_for_each(mode, &output->modes, link) { - if (mode->preferred) { - return mode; - } - } - - // No preferred mode, choose the first one - return wl_container_of(output->modes.next, mode, link); -} - -static void output_state_clear_buffer(struct wlr_output_state *state) { - if (!(state->committed & WLR_OUTPUT_STATE_BUFFER)) { - return; - } - - wlr_buffer_unlock(state->buffer); - state->buffer = NULL; - - state->committed &= ~WLR_OUTPUT_STATE_BUFFER; -} - -static struct wlr_drm_format *output_pick_format(struct wlr_output *output, - const struct wlr_drm_format_set *display_formats); -static void output_pending_resolution(struct wlr_output *output, int *width, - int *height); - -/** - * Ensure the output has a suitable swapchain. The swapchain is re-created if - * necessary. - * - * If allow_modifiers is set to true, the swapchain's format may use modifiers. - * If set to false, the swapchain's format is guaranteed to not use modifiers. - */ -static bool output_create_swapchain(struct wlr_output *output, - bool allow_modifiers) { - int width, height; - output_pending_resolution(output, &width, &height); - - if (output->swapchain != NULL && output->swapchain->width == width && - output->swapchain->height == height && - (allow_modifiers || output->swapchain->format->len == 0)) { - return true; - } - - struct wlr_allocator *allocator = backend_get_allocator(output->backend); - if (allocator == NULL) { - wlr_log(WLR_ERROR, "Failed to get backend allocator"); - return false; - } - - const struct wlr_drm_format_set *display_formats = NULL; - if (output->impl->get_primary_formats) { - display_formats = - output->impl->get_primary_formats(output, allocator->buffer_caps); - if (display_formats == NULL) { - wlr_log(WLR_ERROR, "Failed to get primary display formats"); - return false; - } - } - - struct wlr_drm_format *format = output_pick_format(output, display_formats); - if (format == NULL) { - wlr_log(WLR_ERROR, "Failed to pick primary buffer format for output '%s'", - output->name); - return false; - } - wlr_log(WLR_DEBUG, "Choosing primary buffer format 0x%"PRIX32" for output '%s'", - format->format, output->name); - - if (!allow_modifiers && (format->len != 1 || format->modifiers[0] != DRM_FORMAT_MOD_LINEAR)) { - format->len = 0; - } - - struct wlr_swapchain *swapchain = - wlr_swapchain_create(allocator, width, height, format); - free(format); - if (swapchain == NULL) { - wlr_log(WLR_ERROR, "Failed to create output swapchain"); - return false; - } - - wlr_swapchain_destroy(output->swapchain); - output->swapchain = swapchain; - - return true; -} - -static bool output_attach_back_buffer(struct wlr_output *output, - int *buffer_age) { - assert(output->back_buffer == NULL); - - if (!output_create_swapchain(output, true)) { - return false; - } - - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - assert(renderer != NULL); - - struct wlr_buffer *buffer = - wlr_swapchain_acquire(output->swapchain, buffer_age); - if (buffer == NULL) { - return false; - } - - if (!renderer_bind_buffer(renderer, buffer)) { - wlr_buffer_unlock(buffer); - return false; - } - - output->back_buffer = buffer; - return true; -} - -static void output_clear_back_buffer(struct wlr_output *output) { - if (output->back_buffer == NULL) { - return; - } - - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - assert(renderer != NULL); - - renderer_bind_buffer(renderer, NULL); - - wlr_buffer_unlock(output->back_buffer); - output->back_buffer = NULL; -} - -bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age) { - if (!output_attach_back_buffer(output, buffer_age)) { - return false; - } - wlr_output_attach_buffer(output, output->back_buffer); - return true; -} - -uint32_t wlr_output_preferred_read_format(struct wlr_output *output) { - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - if (!renderer->impl->preferred_read_format || !renderer->impl->read_pixels) { - return DRM_FORMAT_INVALID; - } - - if (!output_attach_back_buffer(output, NULL)) { - return false; - } - - uint32_t fmt = renderer->impl->preferred_read_format(renderer); - - output_clear_back_buffer(output); - - return fmt; -} - -void wlr_output_set_damage(struct wlr_output *output, - pixman_region32_t *damage) { - pixman_region32_intersect_rect(&output->pending.damage, damage, - 0, 0, output->width, output->height); - output->pending.committed |= WLR_OUTPUT_STATE_DAMAGE; -} - -static void output_state_clear_gamma_lut(struct wlr_output_state *state) { - free(state->gamma_lut); - state->gamma_lut = NULL; - state->committed &= ~WLR_OUTPUT_STATE_GAMMA_LUT; -} - -static void output_state_clear(struct wlr_output_state *state) { - output_state_clear_buffer(state); - output_state_clear_gamma_lut(state); - pixman_region32_clear(&state->damage); - state->committed = 0; -} - -static void output_pending_resolution(struct wlr_output *output, int *width, - int *height) { - if (output->pending.committed & WLR_OUTPUT_STATE_MODE) { - switch (output->pending.mode_type) { - case WLR_OUTPUT_STATE_MODE_FIXED: - *width = output->pending.mode->width; - *height = output->pending.mode->height; - return; - case WLR_OUTPUT_STATE_MODE_CUSTOM: - *width = output->pending.custom_mode.width; - *height = output->pending.custom_mode.height; - return; - } - abort(); - } else { - *width = output->width; - *height = output->height; - } -} - -static bool output_attach_empty_buffer(struct wlr_output *output) { - assert(!(output->pending.committed & WLR_OUTPUT_STATE_BUFFER)); - - if (!wlr_output_attach_render(output, NULL)) { - return false; - } - - int width, height; - output_pending_resolution(output, &width, &height); - - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - wlr_renderer_begin(renderer, width, height); - wlr_renderer_clear(renderer, (float[]){0, 0, 0, 0}); - wlr_renderer_end(renderer); - - return true; -} - -static bool output_ensure_buffer(struct wlr_output *output) { - // If we're lighting up an output or changing its mode, make sure to - // provide a new buffer - bool needs_new_buffer = false; - if ((output->pending.committed & WLR_OUTPUT_STATE_ENABLED) && - output->pending.enabled) { - needs_new_buffer = true; - } - if (output->pending.committed & WLR_OUTPUT_STATE_MODE) { - needs_new_buffer = true; - } - if (!needs_new_buffer || - (output->pending.committed & WLR_OUTPUT_STATE_BUFFER)) { - return true; - } - - // If the backend doesn't necessarily need a new buffer on modeset, don't - // bother allocating one. - if (!output->impl->test || output->impl->test(output)) { - return true; - } - - wlr_log(WLR_DEBUG, "Attaching empty buffer to output for modeset"); - - if (!output_attach_empty_buffer(output)) { - goto error; - } - if (!output->impl->test || output->impl->test(output)) { - return true; - } - - output_clear_back_buffer(output); - output->pending.committed &= ~WLR_OUTPUT_STATE_BUFFER; - - if (output->swapchain->format->len == 0) { - return false; - } - - // The test failed for a buffer which has modifiers, try disabling - // modifiers to see if that makes a difference. - wlr_log(WLR_DEBUG, "Output modeset test failed, retrying without modifiers"); - - if (!output_create_swapchain(output, false)) { - return false; - } - if (!output_attach_empty_buffer(output)) { - goto error; - } - if (!output->impl->test(output)) { - goto error; - } - return true; - -error: - output_clear_back_buffer(output); - output->pending.committed &= ~WLR_OUTPUT_STATE_BUFFER; - return false; -} - -static bool output_basic_test(struct wlr_output *output) { - if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { - if (output->frame_pending) { - wlr_log(WLR_DEBUG, "Tried to commit a buffer while a frame is pending"); - return false; - } - - if (output->back_buffer == NULL) { - if (output->attach_render_locks > 0) { - wlr_log(WLR_DEBUG, "Direct scan-out disabled by lock"); - return false; - } - - // If the output has at least one software cursor, refuse to attach the - // buffer - struct wlr_output_cursor *cursor; - wl_list_for_each(cursor, &output->cursors, link) { - if (cursor->enabled && cursor->visible && - cursor != output->hardware_cursor) { - wlr_log(WLR_DEBUG, - "Direct scan-out disabled by software cursor"); - return false; - } - } - - // If the size doesn't match, reject buffer (scaling is not - // supported) - int pending_width, pending_height; - output_pending_resolution(output, &pending_width, &pending_height); - if (output->pending.buffer->width != pending_width || - output->pending.buffer->height != pending_height) { - wlr_log(WLR_DEBUG, "Direct scan-out buffer size mismatch"); - return false; - } - } - } - - bool enabled = output->enabled; - if (output->pending.committed & WLR_OUTPUT_STATE_ENABLED) { - enabled = output->pending.enabled; - } - - if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { - wlr_log(WLR_DEBUG, "Tried to commit a buffer on a disabled output"); - return false; - } - if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_MODE) { - wlr_log(WLR_DEBUG, "Tried to modeset a disabled output"); - return false; - } - if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) { - wlr_log(WLR_DEBUG, "Tried to enable adaptive sync on a disabled output"); - return false; - } - if (!enabled && output->pending.committed & WLR_OUTPUT_STATE_GAMMA_LUT) { - wlr_log(WLR_DEBUG, "Tried to set the gamma lut on a disabled output"); - return false; - } - - return true; -} - -bool wlr_output_test(struct wlr_output *output) { - if (!output_basic_test(output)) { - return false; - } - if (!output_ensure_buffer(output)) { - return false; - } - if (!output->impl->test) { - return true; - } - return output->impl->test(output); -} - -bool wlr_output_commit(struct wlr_output *output) { - if (!output_basic_test(output)) { - wlr_log(WLR_ERROR, "Basic output test failed for %s", output->name); - return false; - } - - if (!output_ensure_buffer(output)) { - return false; - } - - if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) && - output->idle_frame != NULL) { - wl_event_source_remove(output->idle_frame); - output->idle_frame = NULL; - } - - struct timespec now; - clock_gettime(CLOCK_MONOTONIC, &now); - - struct wlr_output_event_precommit pre_event = { - .output = output, - .when = &now, - }; - wlr_signal_emit_safe(&output->events.precommit, &pre_event); - - // output_clear_back_buffer detaches the buffer from the renderer. This is - // important to do before calling impl->commit(), because this marks an - // implicit rendering synchronization point. The backend needs it to avoid - // displaying a buffer when asynchronous GPU work isn't finished. - struct wlr_buffer *back_buffer = NULL; - if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) && - output->back_buffer != NULL) { - back_buffer = wlr_buffer_lock(output->back_buffer); - output_clear_back_buffer(output); - } - - if (!output->impl->commit(output)) { - wlr_buffer_unlock(back_buffer); - output_state_clear(&output->pending); - return false; - } - - if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { - 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, &now); - } - } - - output->commit_seq++; - - bool scale_updated = output->pending.committed & WLR_OUTPUT_STATE_SCALE; - if (scale_updated) { - output->scale = output->pending.scale; - } - - if (output->pending.committed & WLR_OUTPUT_STATE_TRANSFORM) { - output->transform = output->pending.transform; - output_update_matrix(output); - } - - bool geometry_updated = output->pending.committed & - (WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_TRANSFORM); - if (geometry_updated || scale_updated) { - struct wl_resource *resource; - wl_resource_for_each(resource, &output->resources) { - if (geometry_updated) { - send_geometry(resource); - } - if (scale_updated) { - send_scale(resource); - } - } - wlr_output_schedule_done(output); - } - - // Unset the front-buffer when a new buffer will replace it or when the - // output is getting disabled - if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) || - ((output->pending.committed & WLR_OUTPUT_STATE_ENABLED) && - !output->pending.enabled)) { - wlr_buffer_unlock(output->front_buffer); - output->front_buffer = NULL; - } - - if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) { - output->frame_pending = true; - output->needs_frame = false; - } - - if (back_buffer != NULL) { - wlr_swapchain_set_buffer_submitted(output->swapchain, back_buffer); - wlr_buffer_unlock(output->front_buffer); - output->front_buffer = back_buffer; - } - - uint32_t committed = output->pending.committed; - output_state_clear(&output->pending); - - struct wlr_output_event_commit event = { - .output = output, - .committed = committed, - .when = &now, - }; - wlr_signal_emit_safe(&output->events.commit, &event); - - return true; -} - -void wlr_output_rollback(struct wlr_output *output) { - output_clear_back_buffer(output); - output_state_clear(&output->pending); -} - -void wlr_output_attach_buffer(struct wlr_output *output, - struct wlr_buffer *buffer) { - output_state_clear_buffer(&output->pending); - output->pending.committed |= WLR_OUTPUT_STATE_BUFFER; - output->pending.buffer = wlr_buffer_lock(buffer); -} - -void wlr_output_send_frame(struct wlr_output *output) { - output->frame_pending = false; - if (output->enabled) { - wlr_signal_emit_safe(&output->events.frame, output); - } -} - -static void schedule_frame_handle_idle_timer(void *data) { - struct wlr_output *output = data; - output->idle_frame = NULL; - if (!output->frame_pending) { - wlr_output_send_frame(output); - } -} - -void wlr_output_schedule_frame(struct wlr_output *output) { - // Make sure the compositor commits a new frame. This is necessary to make - // clients which ask for frame callbacks without submitting a new buffer - // work. - wlr_output_update_needs_frame(output); - - if (output->frame_pending || output->idle_frame != NULL) { - return; - } - - // We're using an idle timer here in case a buffer swap happens right after - // this function is called - struct wl_event_loop *ev = wl_display_get_event_loop(output->display); - output->idle_frame = - wl_event_loop_add_idle(ev, schedule_frame_handle_idle_timer, output); -} - -void wlr_output_send_present(struct wlr_output *output, - struct wlr_output_event_present *event) { - assert(event); - event->output = output; - - if (event->presented && event->when == NULL) { - struct timespec now; - clockid_t clock = wlr_backend_get_presentation_clock(output->backend); - errno = 0; - if (clock_gettime(clock, &now) != 0) { - wlr_log_errno(WLR_ERROR, "failed to send output present event: " - "failed to read clock"); - return; - } - event->when = &now; - } - - wlr_signal_emit_safe(&output->events.present, event); -} - -void wlr_output_set_gamma(struct wlr_output *output, size_t size, - const uint16_t *r, const uint16_t *g, const uint16_t *b) { - output_state_clear_gamma_lut(&output->pending); - - output->pending.gamma_lut_size = size; - output->pending.gamma_lut = malloc(3 * size * sizeof(uint16_t)); - if (output->pending.gamma_lut == NULL) { - wlr_log_errno(WLR_ERROR, "Allocation failed"); - return; - } - memcpy(output->pending.gamma_lut, r, size * sizeof(uint16_t)); - memcpy(output->pending.gamma_lut + size, g, size * sizeof(uint16_t)); - memcpy(output->pending.gamma_lut + 2 * size, b, size * sizeof(uint16_t)); - - output->pending.committed |= WLR_OUTPUT_STATE_GAMMA_LUT; -} - -size_t wlr_output_get_gamma_size(struct wlr_output *output) { - if (!output->impl->get_gamma_size) { - return 0; - } - return output->impl->get_gamma_size(output); -} - -bool wlr_output_export_dmabuf(struct wlr_output *output, - struct wlr_dmabuf_attributes *attribs) { - if (output->front_buffer == NULL) { - return false; - } - - struct wlr_dmabuf_attributes buf_attribs = {0}; - if (!wlr_buffer_get_dmabuf(output->front_buffer, &buf_attribs)) { - return false; - } - return wlr_dmabuf_attributes_copy(attribs, &buf_attribs); -} - -void wlr_output_update_needs_frame(struct wlr_output *output) { - if (output->needs_frame) { - return; - } - output->needs_frame = true; - wlr_signal_emit_safe(&output->events.needs_frame, output); -} - -void wlr_output_damage_whole(struct wlr_output *output) { - int width, height; - wlr_output_transformed_resolution(output, &width, &height); - - pixman_region32_t damage; - pixman_region32_init_rect(&damage, 0, 0, width, height); - - struct wlr_output_event_damage event = { - .output = output, - .damage = &damage, - }; - wlr_signal_emit_safe(&output->events.damage, &event); - - pixman_region32_fini(&damage); -} - -struct wlr_output *wlr_output_from_resource(struct wl_resource *resource) { - assert(wl_resource_instance_of(resource, &wl_output_interface, - &output_impl)); - return wl_resource_get_user_data(resource); -} - -void wlr_output_lock_attach_render(struct wlr_output *output, bool lock) { - if (lock) { - ++output->attach_render_locks; - } else { - assert(output->attach_render_locks > 0); - --output->attach_render_locks; - } - wlr_log(WLR_DEBUG, "%s direct scan-out on output '%s' (locks: %d)", - lock ? "Disabling" : "Enabling", output->name, - output->attach_render_locks); -} - -static void output_cursor_damage_whole(struct wlr_output_cursor *cursor); - -void wlr_output_lock_software_cursors(struct wlr_output *output, bool lock) { - if (lock) { - ++output->software_cursor_locks; - } else { - assert(output->software_cursor_locks > 0); - --output->software_cursor_locks; - } - wlr_log(WLR_DEBUG, "%s hardware cursors on output '%s' (locks: %d)", - lock ? "Disabling" : "Enabling", output->name, - output->software_cursor_locks); - - if (output->software_cursor_locks > 0 && output->hardware_cursor != NULL) { - assert(output->impl->set_cursor); - output->impl->set_cursor(output, NULL, 0, 0); - output_cursor_damage_whole(output->hardware_cursor); - output->hardware_cursor = NULL; - } - - // If it's possible to use hardware cursors again, don't switch immediately - // since a recorder is likely to lock software cursors for the next frame - // 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, &box, transform, ow, oh); - - 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; - output_cursor_get_box(cursor, &box); - - pixman_region32_t damage; - pixman_region32_init_rect(&damage, box.x, box.y, box.width, box.height); - - struct wlr_output_event_damage event = { - .output = cursor->output, - .damage = &damage, - }; - wlr_signal_emit_safe(&cursor->output->events.damage, &event); - - pixman_region32_fini(&damage); -} - -static void output_cursor_reset(struct wlr_output_cursor *cursor) { - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - } - if (cursor->surface != NULL) { - wl_list_remove(&cursor->surface_commit.link); - wl_list_remove(&cursor->surface_destroy.link); - if (cursor->visible) { - wlr_surface_send_leave(cursor->surface, cursor->output); - } - cursor->surface = NULL; - } -} - -static void output_cursor_update_visible(struct wlr_output_cursor *cursor) { - struct wlr_box output_box; - output_box.x = output_box.y = 0; - wlr_output_transformed_resolution(cursor->output, &output_box.width, - &output_box.height); - - struct wlr_box cursor_box; - output_cursor_get_box(cursor, &cursor_box); - - struct wlr_box intersection; - bool visible = - wlr_box_intersection(&intersection, &output_box, &cursor_box); - - if (cursor->surface != NULL) { - if (cursor->visible && !visible) { - wlr_surface_send_leave(cursor->surface, cursor->output); - } - if (!cursor->visible && visible) { - wlr_surface_send_enter(cursor->surface, cursor->output); - } - } - - cursor->visible = visible; -} - -static struct wlr_drm_format *output_pick_format(struct wlr_output *output, - const struct wlr_drm_format_set *display_formats) { - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - struct wlr_allocator *allocator = backend_get_allocator(output->backend); - assert(renderer != NULL && allocator != NULL); - - const struct wlr_drm_format_set *render_formats = - wlr_renderer_get_render_formats(renderer); - if (render_formats == NULL) { - wlr_log(WLR_ERROR, "Failed to get render formats"); - return NULL; - } - - struct wlr_drm_format *format = NULL; - const uint32_t candidates[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888 }; - for (size_t i = 0; i < sizeof(candidates) / sizeof(candidates[0]); i++) { - uint32_t fmt = candidates[i]; - - const struct wlr_drm_format *render_format = - wlr_drm_format_set_get(render_formats, fmt); - if (render_format == NULL) { - wlr_log(WLR_DEBUG, "Renderer doesn't support format 0x%"PRIX32, fmt); - continue; - } - - if (display_formats != NULL) { - const struct wlr_drm_format *display_format = - wlr_drm_format_set_get(display_formats, fmt); - if (display_format == NULL) { - wlr_log(WLR_DEBUG, "Output doesn't support format 0x%"PRIX32, fmt); - continue; - } - format = wlr_drm_format_intersect(display_format, render_format); - } else { - // The output can display any format - format = wlr_drm_format_dup(render_format); - } - - if (format == NULL) { - wlr_log(WLR_DEBUG, "Failed to intersect display and render " - "modifiers for format 0x%"PRIX32, fmt); - } else { - break; - } - } - if (format == NULL) { - wlr_log(WLR_ERROR, "Failed to choose a format for output '%s'", - output->name); - return NULL; - } - - return format; -} - -static struct wlr_drm_format *output_pick_cursor_format(struct wlr_output *output) { - struct wlr_allocator *allocator = backend_get_allocator(output->backend); - assert(allocator != NULL); - - const struct wlr_drm_format_set *display_formats = NULL; - if (output->impl->get_cursor_formats) { - display_formats = - output->impl->get_cursor_formats(output, allocator->buffer_caps); - if (display_formats == NULL) { - wlr_log(WLR_ERROR, "Failed to get cursor display formats"); - return NULL; - } - } - - return output_pick_format(output, display_formats); -} - -static struct wlr_buffer *render_cursor_buffer(struct wlr_output_cursor *cursor) { - struct wlr_output *output = cursor->output; - - float scale = output->scale; - enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL; - struct wlr_texture *texture = cursor->texture; - if (cursor->surface != NULL) { - texture = wlr_surface_get_texture(cursor->surface); - scale = cursor->surface->current.scale; - transform = cursor->surface->current.transform; - } - if (texture == NULL) { - return NULL; - } - - struct wlr_renderer *renderer = wlr_backend_get_renderer(output->backend); - if (renderer == NULL) { - wlr_log(WLR_ERROR, "Failed to get backend renderer"); - return NULL; - } - - struct wlr_allocator *allocator = backend_get_allocator(output->backend); - if (allocator == NULL) { - wlr_log(WLR_ERROR, "Failed to get backend allocator"); - return NULL; - } - - int width = texture->width; - int height = texture->height; - if (output->impl->get_cursor_size) { - // Apply hardware limitations on buffer size - output->impl->get_cursor_size(cursor->output, &width, &height); - if ((int)texture->width > width || (int)texture->height > height) { - wlr_log(WLR_DEBUG, "Cursor texture too large (%dx%d), " - "exceeds hardware limitations (%dx%d)", texture->width, - texture->height, width, height); - return NULL; - } - } - - if (output->cursor_swapchain == NULL || - output->cursor_swapchain->width != width || - output->cursor_swapchain->height != height) { - struct wlr_drm_format *format = - output_pick_cursor_format(output); - if (format == NULL) { - wlr_log(WLR_ERROR, "Failed to pick cursor format"); - return NULL; - } - - wlr_swapchain_destroy(output->cursor_swapchain); - output->cursor_swapchain = wlr_swapchain_create(allocator, - width, height, format); - if (output->cursor_swapchain == NULL) { - wlr_log(WLR_ERROR, "Failed to create cursor swapchain"); - return NULL; - } - } - - struct wlr_buffer *buffer = - wlr_swapchain_acquire(output->cursor_swapchain, NULL); - if (buffer == NULL) { - return NULL; - } - - struct wlr_box cursor_box = { - .width = texture->width * output->scale / scale, - .height = texture->height * output->scale / scale, - }; - - float output_matrix[9]; - wlr_matrix_identity(output_matrix); - if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) { - struct wlr_box tr_size = { - .width = buffer->width, - .height = buffer->height, - }; - wlr_box_transform(&tr_size, &tr_size, output->transform, 0, 0); - - wlr_matrix_translate(output_matrix, buffer->width / 2.0, - buffer->height / 2.0); - wlr_matrix_transform(output_matrix, output->transform); - wlr_matrix_translate(output_matrix, - tr_size.width / 2.0, - - tr_size.height / 2.0); - } - - float matrix[9]; - wlr_matrix_project_box(matrix, &cursor_box, transform, 0, output_matrix); - - if (!wlr_renderer_begin_with_buffer(renderer, buffer)) { - wlr_buffer_unlock(buffer); - return NULL; - } - - wlr_renderer_clear(renderer, (float[]){ 0.0, 0.0, 0.0, 0.0 }); - wlr_render_texture_with_matrix(renderer, texture, matrix, 1.0); - - wlr_renderer_end(renderer); - - return buffer; -} - -static bool output_cursor_attempt_hardware(struct wlr_output_cursor *cursor) { - struct wlr_output *output = cursor->output; - - if (!output->impl->set_cursor || - output->software_cursor_locks > 0) { - return false; - } - - struct wlr_output_cursor *hwcur = output->hardware_cursor; - if (hwcur != NULL && hwcur != cursor) { - return false; - } - - struct wlr_texture *texture = cursor->texture; - if (cursor->surface != NULL) { - // TODO: try using the surface buffer directly - texture = wlr_surface_get_texture(cursor->surface); - } - - // If the cursor was hidden or was a software cursor, the hardware - // cursor position is outdated - output->impl->move_cursor(cursor->output, - (int)cursor->x, (int)cursor->y); - - struct wlr_buffer *buffer = NULL; - if (texture != NULL) { - buffer = render_cursor_buffer(cursor); - if (buffer == NULL) { - wlr_log(WLR_ERROR, "Failed to render cursor buffer"); - return false; - } - } - - struct wlr_box hotspot = { - .x = cursor->hotspot_x, - .y = cursor->hotspot_y, - }; - wlr_box_transform(&hotspot, &hotspot, - wlr_output_transform_invert(output->transform), - buffer ? buffer->width : 0, buffer ? buffer->height : 0); - - bool ok = output->impl->set_cursor(cursor->output, buffer, - hotspot.x, hotspot.y); - if (ok) { - wlr_buffer_unlock(output->cursor_front_buffer); - output->cursor_front_buffer = buffer; - output->hardware_cursor = cursor; - } else { - wlr_buffer_unlock(buffer); - } - return ok; -} - -bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor, - const uint8_t *pixels, int32_t stride, uint32_t width, uint32_t height, - int32_t hotspot_x, int32_t hotspot_y) { - struct wlr_renderer *renderer = - wlr_backend_get_renderer(cursor->output->backend); - if (!renderer) { - // if the backend has no renderer, we can't draw a cursor, but this is - // actually okay, for ex. with the noop backend - return true; - } - - output_cursor_reset(cursor); - - cursor->width = width; - cursor->height = height; - cursor->hotspot_x = hotspot_x; - cursor->hotspot_y = hotspot_y; - output_cursor_update_visible(cursor); - - wlr_texture_destroy(cursor->texture); - cursor->texture = NULL; - - cursor->enabled = false; - if (pixels != NULL) { - cursor->texture = wlr_texture_from_pixels(renderer, - DRM_FORMAT_ARGB8888, stride, width, height, pixels); - if (cursor->texture == NULL) { - return false; - } - cursor->enabled = true; - } - - if (output_cursor_attempt_hardware(cursor)) { - return true; - } - - wlr_log(WLR_DEBUG, "Falling back to software cursor on output '%s'", - cursor->output->name); - output_cursor_damage_whole(cursor); - return true; -} - -static void output_cursor_commit(struct wlr_output_cursor *cursor, - bool update_hotspot) { - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - } - - struct wlr_surface *surface = cursor->surface; - assert(surface != NULL); - - // Some clients commit a cursor surface with a NULL buffer to hide it. - cursor->enabled = wlr_surface_has_buffer(surface); - cursor->width = surface->current.width * cursor->output->scale; - cursor->height = surface->current.height * cursor->output->scale; - output_cursor_update_visible(cursor); - if (update_hotspot) { - cursor->hotspot_x -= surface->current.dx * cursor->output->scale; - cursor->hotspot_y -= surface->current.dy * cursor->output->scale; - } - - if (output_cursor_attempt_hardware(cursor)) { - return; - } - - // Fallback to software cursor - output_cursor_damage_whole(cursor); -} - -static void output_cursor_handle_commit(struct wl_listener *listener, - void *data) { - struct wlr_output_cursor *cursor = - wl_container_of(listener, cursor, surface_commit); - output_cursor_commit(cursor, true); -} - -static void output_cursor_handle_destroy(struct wl_listener *listener, - void *data) { - struct wlr_output_cursor *cursor = wl_container_of(listener, cursor, - surface_destroy); - output_cursor_reset(cursor); -} - -void wlr_output_cursor_set_surface(struct wlr_output_cursor *cursor, - struct wlr_surface *surface, int32_t hotspot_x, int32_t hotspot_y) { - hotspot_x *= cursor->output->scale; - hotspot_y *= cursor->output->scale; - - if (surface && surface == cursor->surface) { - // Only update the hotspot: surface hasn't changed - - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - } - cursor->hotspot_x = hotspot_x; - cursor->hotspot_y = hotspot_y; - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - } else { - struct wlr_buffer *buffer = cursor->output->cursor_front_buffer; - - struct wlr_box hotspot = { - .x = cursor->hotspot_x, - .y = cursor->hotspot_y, - }; - wlr_box_transform(&hotspot, &hotspot, - wlr_output_transform_invert(cursor->output->transform), - buffer ? buffer->width : 0, buffer ? buffer->height : 0); - - assert(cursor->output->impl->set_cursor); - cursor->output->impl->set_cursor(cursor->output, - buffer, hotspot.x, hotspot.y); - } - return; - } - - output_cursor_reset(cursor); - - cursor->surface = surface; - cursor->hotspot_x = hotspot_x; - cursor->hotspot_y = hotspot_y; - - if (surface != NULL) { - wl_signal_add(&surface->events.commit, &cursor->surface_commit); - wl_signal_add(&surface->events.destroy, &cursor->surface_destroy); - - cursor->visible = false; - output_cursor_commit(cursor, false); - } else { - cursor->enabled = false; - cursor->width = 0; - cursor->height = 0; - - if (cursor->output->hardware_cursor == cursor) { - assert(cursor->output->impl->set_cursor); - cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0); - } - } -} - -bool wlr_output_cursor_move(struct wlr_output_cursor *cursor, - double x, double y) { - if (cursor->x == x && cursor->y == y) { - return true; - } - - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - } - - bool was_visible = cursor->visible; - x *= cursor->output->scale; - y *= cursor->output->scale; - cursor->x = x; - cursor->y = y; - output_cursor_update_visible(cursor); - - if (!was_visible && !cursor->visible) { - // Cursor is still hidden, do nothing - return true; - } - - if (cursor->output->hardware_cursor != cursor) { - output_cursor_damage_whole(cursor); - return true; - } - - assert(cursor->output->impl->move_cursor); - return cursor->output->impl->move_cursor(cursor->output, (int)x, (int)y); -} - -struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output) { - struct wlr_output_cursor *cursor = - calloc(1, sizeof(struct wlr_output_cursor)); - if (cursor == NULL) { - return NULL; - } - cursor->output = output; - wl_signal_init(&cursor->events.destroy); - wl_list_init(&cursor->surface_commit.link); - cursor->surface_commit.notify = output_cursor_handle_commit; - wl_list_init(&cursor->surface_destroy.link); - cursor->surface_destroy.notify = output_cursor_handle_destroy; - wl_list_insert(&output->cursors, &cursor->link); - cursor->visible = true; // default position is at (0, 0) - return cursor; -} - -void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor) { - if (cursor == NULL) { - return; - } - output_cursor_reset(cursor); - wlr_signal_emit_safe(&cursor->events.destroy, cursor); - if (cursor->output->hardware_cursor == cursor) { - // If this cursor was the hardware cursor, disable it - if (cursor->output->impl->set_cursor) { - cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0); - } - cursor->output->hardware_cursor = NULL; - } - wlr_texture_destroy(cursor->texture); - wl_list_remove(&cursor->link); - free(cursor); -} - - -enum wl_output_transform wlr_output_transform_invert( - enum wl_output_transform tr) { - if ((tr & WL_OUTPUT_TRANSFORM_90) && !(tr & WL_OUTPUT_TRANSFORM_FLIPPED)) { - tr ^= WL_OUTPUT_TRANSFORM_180; - } - return tr; -} - -enum wl_output_transform wlr_output_transform_compose( - enum wl_output_transform tr_a, enum wl_output_transform tr_b) { - uint32_t flipped = (tr_a ^ tr_b) & WL_OUTPUT_TRANSFORM_FLIPPED; - uint32_t rotation_mask = WL_OUTPUT_TRANSFORM_90 | WL_OUTPUT_TRANSFORM_180; - uint32_t rotated; - if (tr_b & WL_OUTPUT_TRANSFORM_FLIPPED) { - // When a rotation of k degrees is followed by a flip, the - // equivalent transform is a flip followed by a rotation of - // -k degrees. - rotated = (tr_b - tr_a) & rotation_mask; - } else { - rotated = (tr_a + tr_b) & rotation_mask; - } - return flipped | rotated; -} |