mirror of
https://gitlab.freedesktop.org/wayland/weston
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![Pekka Paalanen](/assets/img/avatar_default.png)
This clarifies what is supposed to be the libweston code. v2: screen-share.c is already in compositor/ instead. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk> Reviewed-by: Yong Bakos <ybakos@humanoriented.com> Acked-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net> Tested-by: Quentin Glidic <sardemff7+git@sardemff7.net> Tested-by: Benoit Gschwind <gschwind@gnu-log.net> Acked-by: Benoit Gschwind <gschwind@gnu-log.net> [Pekka: rebased]
636 lines
15 KiB
C
636 lines
15 KiB
C
/*
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* Copyright © 2012 Collabora, Ltd.
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* Copyright © 2012 Rob Clark
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/* cliptest: for debugging calculate_edges() function.
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* controls:
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* clip box position: mouse left drag, keys: w a s d
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* clip box size: mouse right drag, keys: i j k l
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* surface orientation: mouse wheel, keys: n m
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* surface transform disable key: r
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*/
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#include "config.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <libgen.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <pixman.h>
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#include <cairo.h>
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#include <float.h>
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#include <assert.h>
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#include <linux/input.h>
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#include <wayland-client.h>
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#include "libweston/vertex-clipping.h"
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#include "shared/xalloc.h"
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#include "window.h"
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typedef float GLfloat;
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struct geometry {
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pixman_box32_t clip;
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pixman_box32_t surf;
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float s; /* sin phi */
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float c; /* cos phi */
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float phi;
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};
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struct weston_view {
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struct {
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int enabled;
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} transform;
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struct geometry *geometry;
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};
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static void
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weston_view_to_global_float(struct weston_view *view,
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float sx, float sy, float *x, float *y)
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{
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struct geometry *g = view->geometry;
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/* pure rotation around origin by sine and cosine */
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*x = g->c * sx + g->s * sy;
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*y = -g->s * sx + g->c * sy;
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}
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/* ---------------------- copied begins -----------------------*/
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/* Keep this in sync with what is in gl-renderer.c! */
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#define max(a, b) (((a) > (b)) ? (a) : (b))
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#define min(a, b) (((a) > (b)) ? (b) : (a))
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/*
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* Compute the boundary vertices of the intersection of the global coordinate
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* aligned rectangle 'rect', and an arbitrary quadrilateral produced from
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* 'surf_rect' when transformed from surface coordinates into global coordinates.
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* The vertices are written to 'ex' and 'ey', and the return value is the
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* number of vertices. Vertices are produced in clockwise winding order.
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* Guarantees to produce either zero vertices, or 3-8 vertices with non-zero
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* polygon area.
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*/
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static int
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calculate_edges(struct weston_view *ev, pixman_box32_t *rect,
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pixman_box32_t *surf_rect, GLfloat *ex, GLfloat *ey)
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{
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struct clip_context ctx;
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int i, n;
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GLfloat min_x, max_x, min_y, max_y;
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struct polygon8 surf = {
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{ surf_rect->x1, surf_rect->x2, surf_rect->x2, surf_rect->x1 },
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{ surf_rect->y1, surf_rect->y1, surf_rect->y2, surf_rect->y2 },
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4
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};
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ctx.clip.x1 = rect->x1;
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ctx.clip.y1 = rect->y1;
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ctx.clip.x2 = rect->x2;
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ctx.clip.y2 = rect->y2;
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/* transform surface to screen space: */
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for (i = 0; i < surf.n; i++)
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weston_view_to_global_float(ev, surf.x[i], surf.y[i],
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&surf.x[i], &surf.y[i]);
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/* find bounding box: */
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min_x = max_x = surf.x[0];
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min_y = max_y = surf.y[0];
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for (i = 1; i < surf.n; i++) {
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min_x = min(min_x, surf.x[i]);
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max_x = max(max_x, surf.x[i]);
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min_y = min(min_y, surf.y[i]);
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max_y = max(max_y, surf.y[i]);
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}
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/* First, simple bounding box check to discard early transformed
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* surface rects that do not intersect with the clip region:
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*/
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if ((min_x >= ctx.clip.x2) || (max_x <= ctx.clip.x1) ||
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(min_y >= ctx.clip.y2) || (max_y <= ctx.clip.y1))
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return 0;
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/* Simple case, bounding box edges are parallel to surface edges,
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* there will be only four edges. We just need to clip the surface
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* vertices to the clip rect bounds:
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*/
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if (!ev->transform.enabled)
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return clip_simple(&ctx, &surf, ex, ey);
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/* Transformed case: use a general polygon clipping algorithm to
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* clip the surface rectangle with each side of 'rect'.
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* The algorithm is Sutherland-Hodgman, as explained in
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* http://www.codeguru.com/cpp/misc/misc/graphics/article.php/c8965/Polygon-Clipping.htm
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* but without looking at any of that code.
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*/
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n = clip_transformed(&ctx, &surf, ex, ey);
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if (n < 3)
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return 0;
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return n;
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}
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/* ---------------------- copied ends -----------------------*/
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static void
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geometry_set_phi(struct geometry *g, float phi)
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{
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g->phi = phi;
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g->s = sin(phi);
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g->c = cos(phi);
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}
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static void
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geometry_init(struct geometry *g)
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{
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g->clip.x1 = -50;
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g->clip.y1 = -50;
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g->clip.x2 = -10;
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g->clip.y2 = -10;
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g->surf.x1 = -20;
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g->surf.y1 = -20;
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g->surf.x2 = 20;
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g->surf.y2 = 20;
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geometry_set_phi(g, 0.0);
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}
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struct ui_state {
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uint32_t button;
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int down;
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int down_pos[2];
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struct geometry geometry;
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};
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struct cliptest {
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struct window *window;
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struct widget *widget;
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struct display *display;
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int fullscreen;
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struct ui_state ui;
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struct geometry geometry;
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struct weston_view view;
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};
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static void
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draw_polygon_closed(cairo_t *cr, GLfloat *x, GLfloat *y, int n)
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{
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int i;
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cairo_move_to(cr, x[0], y[0]);
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for (i = 1; i < n; i++)
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cairo_line_to(cr, x[i], y[i]);
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cairo_line_to(cr, x[0], y[0]);
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}
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static void
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draw_polygon_labels(cairo_t *cr, GLfloat *x, GLfloat *y, int n)
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{
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char str[16];
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int i;
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for (i = 0; i < n; i++) {
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snprintf(str, 16, "%d", i);
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cairo_move_to(cr, x[i], y[i]);
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cairo_show_text(cr, str);
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}
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}
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static void
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draw_coordinates(cairo_t *cr, double ox, double oy, GLfloat *x, GLfloat *y, int n)
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{
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char str[64];
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int i;
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cairo_font_extents_t ext;
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cairo_font_extents(cr, &ext);
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for (i = 0; i < n; i++) {
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snprintf(str, 64, "%d: %14.9f, %14.9f", i, x[i], y[i]);
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cairo_move_to(cr, ox, oy + ext.height * (i + 1));
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cairo_show_text(cr, str);
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}
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}
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static void
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draw_box(cairo_t *cr, pixman_box32_t *box, struct weston_view *view)
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{
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GLfloat x[4], y[4];
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if (view) {
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weston_view_to_global_float(view, box->x1, box->y1, &x[0], &y[0]);
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weston_view_to_global_float(view, box->x2, box->y1, &x[1], &y[1]);
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weston_view_to_global_float(view, box->x2, box->y2, &x[2], &y[2]);
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weston_view_to_global_float(view, box->x1, box->y2, &x[3], &y[3]);
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} else {
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x[0] = box->x1; y[0] = box->y1;
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x[1] = box->x2; y[1] = box->y1;
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x[2] = box->x2; y[2] = box->y2;
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x[3] = box->x1; y[3] = box->y2;
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}
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draw_polygon_closed(cr, x, y, 4);
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}
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static void
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draw_geometry(cairo_t *cr, struct weston_view *view,
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GLfloat *ex, GLfloat *ey, int n)
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{
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struct geometry *g = view->geometry;
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float cx, cy;
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draw_box(cr, &g->surf, view);
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cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.4);
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cairo_fill(cr);
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weston_view_to_global_float(view, g->surf.x1 - 4, g->surf.y1 - 4, &cx, &cy);
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cairo_arc(cr, cx, cy, 1.5, 0.0, 2.0 * M_PI);
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if (view->transform.enabled == 0)
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cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.8);
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cairo_fill(cr);
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draw_box(cr, &g->clip, NULL);
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cairo_set_source_rgba(cr, 0.0, 0.0, 1.0, 0.4);
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cairo_fill(cr);
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if (n) {
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draw_polygon_closed(cr, ex, ey, n);
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cairo_set_source_rgb(cr, 0.0, 1.0, 0.0);
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cairo_stroke(cr);
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cairo_set_source_rgba(cr, 0.0, 1.0, 0.0, 0.5);
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draw_polygon_labels(cr, ex, ey, n);
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}
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}
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static void
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redraw_handler(struct widget *widget, void *data)
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{
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struct cliptest *cliptest = data;
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struct geometry *g = cliptest->view.geometry;
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struct rectangle allocation;
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cairo_t *cr;
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cairo_surface_t *surface;
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GLfloat ex[8];
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GLfloat ey[8];
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int n;
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n = calculate_edges(&cliptest->view, &g->clip, &g->surf, ex, ey);
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widget_get_allocation(cliptest->widget, &allocation);
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surface = window_get_surface(cliptest->window);
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cr = cairo_create(surface);
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widget_get_allocation(cliptest->widget, &allocation);
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cairo_rectangle(cr, allocation.x, allocation.y,
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allocation.width, allocation.height);
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cairo_clip(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(cr, 0, 0, 0, 1);
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cairo_paint(cr);
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cairo_translate(cr, allocation.x, allocation.y);
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cairo_set_line_width(cr, 1.0);
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cairo_move_to(cr, allocation.width / 2.0, 0.0);
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cairo_line_to(cr, allocation.width / 2.0, allocation.height);
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cairo_move_to(cr, 0.0, allocation.height / 2.0);
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cairo_line_to(cr, allocation.width, allocation.height / 2.0);
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cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
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cairo_stroke(cr);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_push_group(cr);
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cairo_translate(cr, allocation.width / 2.0,
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allocation.height / 2.0);
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cairo_scale(cr, 4.0, 4.0);
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cairo_set_line_width(cr, 0.5);
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cairo_set_line_join(cr, CAIRO_LINE_JOIN_BEVEL);
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cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_BOLD);
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cairo_set_font_size(cr, 5.0);
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draw_geometry(cr, &cliptest->view, ex, ey, n);
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cairo_pop_group_to_source(cr);
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cairo_paint(cr);
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cairo_set_source_rgba(cr, 0.0, 1.0, 0.0, 1.0);
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cairo_select_font_face(cr, "monospace", CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size(cr, 12.0);
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draw_coordinates(cr, 10.0, 10.0, ex, ey, n);
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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}
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static int
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motion_handler(struct widget *widget, struct input *input,
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uint32_t time, float x, float y, void *data)
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{
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struct cliptest *cliptest = data;
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struct ui_state *ui = &cliptest->ui;
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struct geometry *ref = &ui->geometry;
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struct geometry *geom = &cliptest->geometry;
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float dx, dy;
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if (!ui->down)
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return CURSOR_LEFT_PTR;
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dx = (x - ui->down_pos[0]) * 0.25;
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dy = (y - ui->down_pos[1]) * 0.25;
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switch (ui->button) {
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case BTN_LEFT:
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geom->clip.x1 = ref->clip.x1 + dx;
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geom->clip.y1 = ref->clip.y1 + dy;
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/* fall through */
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case BTN_RIGHT:
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geom->clip.x2 = ref->clip.x2 + dx;
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geom->clip.y2 = ref->clip.y2 + dy;
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break;
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default:
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return CURSOR_LEFT_PTR;
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}
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widget_schedule_redraw(cliptest->widget);
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return CURSOR_BLANK;
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}
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static void
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button_handler(struct widget *widget, struct input *input,
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uint32_t time, uint32_t button,
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enum wl_pointer_button_state state, void *data)
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{
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struct cliptest *cliptest = data;
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struct ui_state *ui = &cliptest->ui;
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ui->button = button;
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if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
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ui->down = 1;
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input_get_position(input, &ui->down_pos[0], &ui->down_pos[1]);
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} else {
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ui->down = 0;
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ui->geometry = cliptest->geometry;
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}
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}
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static void
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axis_handler(struct widget *widget, struct input *input, uint32_t time,
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uint32_t axis, wl_fixed_t value, void *data)
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{
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struct cliptest *cliptest = data;
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struct geometry *geom = &cliptest->geometry;
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if (axis != WL_POINTER_AXIS_VERTICAL_SCROLL)
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return;
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geometry_set_phi(geom, geom->phi +
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(M_PI / 12.0) * wl_fixed_to_double(value));
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cliptest->view.transform.enabled = 1;
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widget_schedule_redraw(cliptest->widget);
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}
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static void
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key_handler(struct window *window, struct input *input, uint32_t time,
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uint32_t key, uint32_t sym,
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enum wl_keyboard_key_state state, void *data)
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{
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struct cliptest *cliptest = data;
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struct geometry *g = &cliptest->geometry;
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if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
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return;
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switch (sym) {
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case XKB_KEY_Escape:
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display_exit(cliptest->display);
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return;
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case XKB_KEY_w:
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g->clip.y1 -= 1;
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g->clip.y2 -= 1;
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break;
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case XKB_KEY_a:
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g->clip.x1 -= 1;
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g->clip.x2 -= 1;
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break;
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case XKB_KEY_s:
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g->clip.y1 += 1;
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g->clip.y2 += 1;
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break;
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case XKB_KEY_d:
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g->clip.x1 += 1;
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g->clip.x2 += 1;
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break;
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case XKB_KEY_i:
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g->clip.y2 -= 1;
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break;
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case XKB_KEY_j:
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g->clip.x2 -= 1;
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break;
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case XKB_KEY_k:
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g->clip.y2 += 1;
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break;
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case XKB_KEY_l:
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g->clip.x2 += 1;
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break;
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case XKB_KEY_n:
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geometry_set_phi(g, g->phi + (M_PI / 24.0));
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cliptest->view.transform.enabled = 1;
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break;
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case XKB_KEY_m:
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geometry_set_phi(g, g->phi - (M_PI / 24.0));
|
|
cliptest->view.transform.enabled = 1;
|
|
break;
|
|
case XKB_KEY_r:
|
|
geometry_set_phi(g, 0.0);
|
|
cliptest->view.transform.enabled = 0;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
widget_schedule_redraw(cliptest->widget);
|
|
}
|
|
|
|
static void
|
|
keyboard_focus_handler(struct window *window,
|
|
struct input *device, void *data)
|
|
{
|
|
struct cliptest *cliptest = data;
|
|
|
|
window_schedule_redraw(cliptest->window);
|
|
}
|
|
|
|
static void
|
|
fullscreen_handler(struct window *window, void *data)
|
|
{
|
|
struct cliptest *cliptest = data;
|
|
|
|
cliptest->fullscreen ^= 1;
|
|
window_set_fullscreen(window, cliptest->fullscreen);
|
|
}
|
|
|
|
static struct cliptest *
|
|
cliptest_create(struct display *display)
|
|
{
|
|
struct cliptest *cliptest;
|
|
|
|
cliptest = xzalloc(sizeof *cliptest);
|
|
cliptest->view.geometry = &cliptest->geometry;
|
|
cliptest->view.transform.enabled = 0;
|
|
geometry_init(&cliptest->geometry);
|
|
geometry_init(&cliptest->ui.geometry);
|
|
|
|
cliptest->window = window_create(display);
|
|
cliptest->widget = window_frame_create(cliptest->window, cliptest);
|
|
window_set_title(cliptest->window, "cliptest");
|
|
cliptest->display = display;
|
|
|
|
window_set_user_data(cliptest->window, cliptest);
|
|
widget_set_redraw_handler(cliptest->widget, redraw_handler);
|
|
widget_set_button_handler(cliptest->widget, button_handler);
|
|
widget_set_motion_handler(cliptest->widget, motion_handler);
|
|
widget_set_axis_handler(cliptest->widget, axis_handler);
|
|
|
|
window_set_keyboard_focus_handler(cliptest->window,
|
|
keyboard_focus_handler);
|
|
window_set_key_handler(cliptest->window, key_handler);
|
|
window_set_fullscreen_handler(cliptest->window, fullscreen_handler);
|
|
|
|
/* set minimum size */
|
|
widget_schedule_resize(cliptest->widget, 200, 100);
|
|
|
|
/* set current size */
|
|
widget_schedule_resize(cliptest->widget, 500, 400);
|
|
|
|
return cliptest;
|
|
}
|
|
|
|
static struct timespec begin_time;
|
|
|
|
static void
|
|
reset_timer(void)
|
|
{
|
|
clock_gettime(CLOCK_MONOTONIC, &begin_time);
|
|
}
|
|
|
|
static double
|
|
read_timer(void)
|
|
{
|
|
struct timespec t;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &t);
|
|
return (double)(t.tv_sec - begin_time.tv_sec) +
|
|
1e-9 * (t.tv_nsec - begin_time.tv_nsec);
|
|
}
|
|
|
|
static int
|
|
benchmark(void)
|
|
{
|
|
struct weston_view view;
|
|
struct geometry geom;
|
|
GLfloat ex[8], ey[8];
|
|
int i;
|
|
double t;
|
|
const int N = 1000000;
|
|
|
|
geom.clip.x1 = -19;
|
|
geom.clip.y1 = -19;
|
|
geom.clip.x2 = 19;
|
|
geom.clip.y2 = 19;
|
|
|
|
geom.surf.x1 = -20;
|
|
geom.surf.y1 = -20;
|
|
geom.surf.x2 = 20;
|
|
geom.surf.y2 = 20;
|
|
|
|
geometry_set_phi(&geom, 0.0);
|
|
|
|
view.transform.enabled = 1;
|
|
view.geometry = &geom;
|
|
|
|
reset_timer();
|
|
for (i = 0; i < N; i++) {
|
|
geometry_set_phi(&geom, (float)i / 360.0f);
|
|
calculate_edges(&view, &geom.clip, &geom.surf, ex, ey);
|
|
}
|
|
t = read_timer();
|
|
|
|
printf("%d calls took %g s, average %g us/call\n", N, t, t / N * 1e6);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
cliptest_destroy(struct cliptest *cliptest)
|
|
{
|
|
widget_destroy(cliptest->widget);
|
|
window_destroy(cliptest->window);
|
|
free(cliptest);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct display *d;
|
|
struct cliptest *cliptest;
|
|
|
|
if (argc > 1) {
|
|
if (argc == 2 && !strcmp(argv[1], "-b"))
|
|
return benchmark();
|
|
printf("Usage: %s [OPTIONS]\n -b run benchmark\n", argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
d = display_create(&argc, argv);
|
|
if (d == NULL) {
|
|
fprintf(stderr, "failed to create display: %m\n");
|
|
return -1;
|
|
}
|
|
|
|
cliptest = cliptest_create(d);
|
|
display_run(d);
|
|
|
|
cliptest_destroy(cliptest);
|
|
display_destroy(d);
|
|
|
|
return 0;
|
|
}
|