wlroots/types/wlr_surface.c

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#include <assert.h>
#include <stdlib.h>
#include <wayland-server.h>
#include <wlr/util/log.h>
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#include <wlr/egl.h>
#include <wlr/render/interface.h>
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#include <wlr/types/wlr_surface.h>
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#include <wlr/render/matrix.h>
static void surface_destroy(struct wl_client *client, struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static void surface_attach(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *buffer, int32_t sx, int32_t sy) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->pending.invalid |= WLR_SURFACE_INVALID_BUFFER;
surface->pending.buffer = buffer;
}
static void surface_damage(struct wl_client *client,
struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
if (width < 0 || height < 0) {
return;
}
surface->pending.invalid |= WLR_SURFACE_INVALID_SURFACE_DAMAGE;
pixman_region32_union_rect(&surface->pending.surface_damage,
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&surface->pending.surface_damage,
x, y, width, height);
}
static void destroy_frame_callback(struct wl_resource *resource) {
struct wlr_frame_callback *cb = wl_resource_get_user_data(resource);
wl_list_remove(&cb->link);
free(cb);
}
static void surface_frame(struct wl_client *client,
struct wl_resource *resource, uint32_t callback) {
struct wlr_frame_callback *cb;
struct wlr_surface *surface = wl_resource_get_user_data(resource);
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cb = malloc(sizeof(struct wlr_frame_callback));
if (cb == NULL) {
wl_resource_post_no_memory(resource);
return;
}
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cb->resource = wl_resource_create(client,
&wl_callback_interface, 1, callback);
if (cb->resource == NULL) {
free(cb);
wl_resource_post_no_memory(resource);
return;
}
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wl_resource_set_implementation(cb->resource,
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NULL, cb, destroy_frame_callback);
wl_list_insert(surface->frame_callback_list.prev, &cb->link);
}
static void surface_set_opaque_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->pending.invalid |= WLR_SURFACE_INVALID_OPAQUE_REGION;
if (region_resource) {
pixman_region32_t *region = wl_resource_get_user_data(region_resource);
pixman_region32_copy(&surface->pending.opaque, region);
} else {
pixman_region32_clear(&surface->pending.opaque);
}
}
static void surface_set_input_region(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *region_resource) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->pending.invalid |= WLR_SURFACE_INVALID_INPUT_REGION;
if (region_resource) {
pixman_region32_t *region = wl_resource_get_user_data(region_resource);
pixman_region32_copy(&surface->pending.input, region);
} else {
pixman_region32_fini(&surface->pending.input);
pixman_region32_init_rect(&surface->pending.input,
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INT32_MIN, INT32_MIN, UINT32_MAX, UINT32_MAX);
}
}
static void wlr_surface_update_size(struct wlr_surface *surface) {
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int scale = surface->current.scale;
enum wl_output_transform transform = surface->current.transform;
wlr_texture_get_buffer_size(surface->texture, surface->current.buffer,
&surface->current.buffer_width, &surface->current.buffer_height);
int _width = surface->current.buffer_width / scale;
int _height = surface->current.buffer_height / scale;
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if (transform == WL_OUTPUT_TRANSFORM_90 ||
transform == WL_OUTPUT_TRANSFORM_270 ||
transform == WL_OUTPUT_TRANSFORM_FLIPPED_90 ||
transform == WL_OUTPUT_TRANSFORM_FLIPPED_270) {
int tmp = _width;
_width = _height;
_height = tmp;
}
surface->current.width = _width;
surface->current.height = _height;
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}
static void wlr_surface_to_buffer_region(struct wlr_surface *surface,
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pixman_region32_t *surface_region, pixman_region32_t *buffer_region,
int width, int height) {
pixman_box32_t *src_rects, *dest_rects;
int nrects, i;
int scale = surface->current.scale;
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enum wl_output_transform transform = surface->current.transform;
src_rects = pixman_region32_rectangles(surface_region, &nrects);
dest_rects = malloc(nrects * sizeof(*dest_rects));
if (!dest_rects) {
return;
}
for (i = 0; i < nrects; i++) {
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switch (transform) {
default:
case WL_OUTPUT_TRANSFORM_NORMAL:
dest_rects[i].x1 = src_rects[i].x1;
dest_rects[i].y1 = src_rects[i].y1;
dest_rects[i].x2 = src_rects[i].x2;
dest_rects[i].y2 = src_rects[i].y2;
break;
case WL_OUTPUT_TRANSFORM_90:
dest_rects[i].x1 = height - src_rects[i].y2;
dest_rects[i].y1 = src_rects[i].x1;
dest_rects[i].x2 = height - src_rects[i].y1;
dest_rects[i].y2 = src_rects[i].x2;
break;
case WL_OUTPUT_TRANSFORM_180:
dest_rects[i].x1 = width - src_rects[i].x2;
dest_rects[i].y1 = height - src_rects[i].y2;
dest_rects[i].x2 = width - src_rects[i].x1;
dest_rects[i].y2 = height - src_rects[i].y1;
break;
case WL_OUTPUT_TRANSFORM_270:
dest_rects[i].x1 = src_rects[i].y1;
dest_rects[i].y1 = width - src_rects[i].x2;
dest_rects[i].x2 = src_rects[i].y2;
dest_rects[i].y2 = width - src_rects[i].x1;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest_rects[i].x1 = width - src_rects[i].x2;
dest_rects[i].y1 = src_rects[i].y1;
dest_rects[i].x2 = width - src_rects[i].x1;
dest_rects[i].y2 = src_rects[i].y2;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest_rects[i].x1 = height - src_rects[i].y2;
dest_rects[i].y1 = width - src_rects[i].x2;
dest_rects[i].x2 = height - src_rects[i].y1;
dest_rects[i].y2 = width - src_rects[i].x1;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest_rects[i].x1 = src_rects[i].x1;
dest_rects[i].y1 = height - src_rects[i].y2;
dest_rects[i].x2 = src_rects[i].x2;
dest_rects[i].y2 = height - src_rects[i].y1;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest_rects[i].x1 = src_rects[i].y1;
dest_rects[i].y1 = src_rects[i].x1;
dest_rects[i].x2 = src_rects[i].y2;
dest_rects[i].y2 = src_rects[i].x2;
break;
}
}
if (scale != 1) {
for (i = 0; i < nrects; i++) {
dest_rects[i].x1 *= scale;
dest_rects[i].x2 *= scale;
dest_rects[i].y1 *= scale;
dest_rects[i].y2 *= scale;
}
}
pixman_region32_fini(buffer_region);
pixman_region32_init_rects(buffer_region, dest_rects, nrects);
free(dest_rects);
}
static void surface_commit(struct wl_client *client,
struct wl_resource *resource) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->current.scale = surface->pending.scale;
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surface->current.transform = surface->pending.transform;
if ((surface->pending.invalid & WLR_SURFACE_INVALID_BUFFER)) {
surface->current.buffer = surface->pending.buffer;
}
if ((surface->pending.invalid & WLR_SURFACE_INVALID_SURFACE_DAMAGE)) {
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int32_t oldw = surface->current.buffer_width;
int32_t oldh = surface->current.buffer_height;
wlr_surface_update_size(surface);
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surface->reupload_buffer = oldw != surface->current.buffer_width ||
oldh != surface->current.buffer_height;
pixman_region32_union(&surface->current.surface_damage,
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&surface->current.surface_damage,
&surface->pending.surface_damage);
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pixman_region32_intersect_rect(&surface->current.surface_damage,
&surface->current.surface_damage, 0, 0, surface->current.width,
surface->current.height);
pixman_region32_union(&surface->current.buffer_damage,
&surface->current.buffer_damage,
&surface->pending.buffer_damage);
pixman_region32_t buffer_damage;
pixman_region32_init(&buffer_damage);
wlr_surface_to_buffer_region(surface, &surface->current.surface_damage,
&buffer_damage, surface->current.width, surface->current.height);
pixman_region32_union(&surface->current.buffer_damage,
&surface->current.buffer_damage, &buffer_damage);
pixman_region32_intersect_rect(&surface->current.buffer_damage,
&surface->current.buffer_damage, 0, 0,
surface->current.buffer_width, surface->current.buffer_height);
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pixman_region32_clear(&surface->pending.surface_damage);
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pixman_region32_clear(&surface->pending.buffer_damage);
}
// TODO: Commit other changes
surface->pending.invalid = 0;
// TODO: add the invalid bitfield to this callback
wl_signal_emit(&surface->signals.commit, surface);
}
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void wlr_surface_flush_damage(struct wlr_surface *surface) {
if (!surface->current.buffer) {
if (surface->texture->valid) {
// TODO: Detach buffers
}
return;
}
struct wl_shm_buffer *buffer = wl_shm_buffer_get(surface->current.buffer);
if (!buffer) {
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if (wlr_renderer_buffer_is_drm(surface->renderer, surface->pending.buffer)) {
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wlr_texture_upload_drm(surface->texture, surface->pending.buffer);
goto release;
} else {
wlr_log(L_INFO, "Unknown buffer handle attached");
return;
}
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}
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uint32_t format = wl_shm_buffer_get_format(buffer);
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if (surface->reupload_buffer) {
wlr_texture_upload_shm(surface->texture, format, buffer);
} else {
pixman_region32_t damage = surface->current.buffer_damage;
if (!pixman_region32_not_empty(&damage)) {
goto release;
}
int n;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &n);
for (int i = 0; i < n; ++i) {
pixman_box32_t rect = rects[i];
if (!wlr_texture_update_shm(surface->texture, format,
rect.x1, rect.y1,
rect.x2 - rect.x1,
rect.y2 - rect.y1,
buffer)) {
break;
}
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}
}
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release:
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pixman_region32_fini(&surface->current.surface_damage);
pixman_region32_init(&surface->current.surface_damage);
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pixman_region32_fini(&surface->current.buffer_damage);
pixman_region32_init(&surface->current.buffer_damage);
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wl_resource_post_event(surface->current.buffer, WL_BUFFER_RELEASE);
surface->current.buffer = NULL;
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}
static void surface_set_buffer_transform(struct wl_client *client,
struct wl_resource *resource, int transform) {
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struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->pending.transform = transform;
}
static void surface_set_buffer_scale(struct wl_client *client,
struct wl_resource *resource,
int32_t scale) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
surface->pending.scale = scale;
}
static void surface_damage_buffer(struct wl_client *client,
struct wl_resource *resource,
int32_t x, int32_t y, int32_t width,
int32_t height) {
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struct wlr_surface *surface = wl_resource_get_user_data(resource);
if (width < 0 || height < 0) {
return;
}
surface->pending.invalid |= WLR_SURFACE_INVALID_SURFACE_DAMAGE;
pixman_region32_union_rect(&surface->pending.buffer_damage,
&surface->pending.buffer_damage,
x, y, width, height);
}
const struct wl_surface_interface surface_interface = {
surface_destroy,
surface_attach,
surface_damage,
surface_frame,
surface_set_opaque_region,
surface_set_input_region,
surface_commit,
surface_set_buffer_transform,
surface_set_buffer_scale,
surface_damage_buffer
};
static void destroy_surface(struct wl_resource *resource) {
struct wlr_surface *surface = wl_resource_get_user_data(resource);
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wlr_texture_destroy(surface->texture);
struct wlr_frame_callback *cb, *next;
wl_list_for_each_safe(cb, next, &surface->frame_callback_list, link) {
wl_resource_destroy(cb->resource);
}
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free(surface);
}
struct wlr_surface *wlr_surface_create(struct wl_resource *res,
struct wlr_renderer *renderer) {
struct wlr_surface *surface;
if (!(surface = calloc(1, sizeof(struct wlr_surface)))) {
wl_resource_post_no_memory(res);
return NULL;
}
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surface->renderer = renderer;
surface->texture = wlr_render_texture_init(renderer);
surface->resource = res;
surface->current.scale = 1;
surface->pending.scale = 1;
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surface->current.transform = WL_OUTPUT_TRANSFORM_NORMAL;
surface->pending.transform = WL_OUTPUT_TRANSFORM_NORMAL;
wl_signal_init(&surface->signals.commit);
wl_list_init(&surface->frame_callback_list);
wl_resource_set_implementation(res, &surface_interface,
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surface, destroy_surface);
return surface;
}
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void wlr_surface_get_matrix(struct wlr_surface *surface,
float (*matrix)[16],
const float (*projection)[16],
const float (*transform)[16]) {
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int width = surface->texture->width / surface->current.scale;
int height = surface->texture->height / surface->current.scale;
float scale[16];
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wlr_matrix_identity(matrix);
if (transform) {
wlr_matrix_mul(matrix, transform, matrix);
}
wlr_matrix_scale(&scale, width, height, 1);
wlr_matrix_mul(matrix, &scale, matrix);
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wlr_matrix_mul(projection, matrix, matrix);
}