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af9fbd176b
Having spent the last dev cycle looking at how we could specialize the compositors for various backends, we once again look for the commonalities in order to reduce the duplication. In part this is motivated by the idea that spans is a good interface for both the existent GL backend and pixman, and so they deserve a dedicated compositor. xcb/xlib target an identical rendering system and so they should be using the same compositor, and it should be possible to run that same compositor locally against pixman to generate reference tests. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> P.S. This brings massive upheaval (read breakage) I've tried delaying in order to fix as many things as possible but now this one patch does far, far, far too much. Apologies in advance for breaking your favourite backend, but trust me in that the end result will be much better. :)
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* Copyright © 2007 Chris Wilson
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Chris Wilson not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Chris Wilson makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairo-perf.h"
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#define _USE_MATH_DEFINES /* for M_SQRT2 on win32 */
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#include <math.h>
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static void
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add_rectangle (cairo_t *cr, double size)
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{
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double x, y;
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if (size < 1)
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return;
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cairo_get_current_point (cr, &x, &y);
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cairo_rel_move_to (cr, -size/2., -size/2.);
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cairo_rel_line_to (cr, size, 0);
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cairo_rel_line_to (cr, 0, size);
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cairo_rel_line_to (cr, -size, 0);
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cairo_close_path (cr);
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cairo_save (cr);
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cairo_translate (cr, -size/2., size);
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cairo_move_to (cr, x, y);
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cairo_rotate (cr, M_PI/4);
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add_rectangle (cr, size / M_SQRT2);
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cairo_restore (cr);
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cairo_save (cr);
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cairo_translate (cr, size/2., size);
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cairo_move_to (cr, x, y);
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cairo_rotate (cr, -M_PI/4);
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add_rectangle (cr, size / M_SQRT2);
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cairo_restore (cr);
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}
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static cairo_time_t
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do_pythagoras_tree (cairo_t *cr, int width, int height, int loops)
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{
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double size = 128;
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cairo_perf_timer_start ();
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while (loops--) {
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cairo_save (cr);
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cairo_translate (cr, 0, height);
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cairo_scale (cr, 1, -1);
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cairo_move_to (cr, width/2, size/2);
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add_rectangle (cr, size);
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cairo_set_source_rgb (cr, 0., 0., 0.);
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cairo_fill (cr);
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cairo_restore (cr);
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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cairo_bool_t
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pythagoras_tree_enabled (cairo_perf_t *perf)
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{
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return cairo_perf_can_run (perf, "pythagoras-tree", NULL);
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}
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void
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pythagoras_tree (cairo_perf_t *perf, cairo_t *cr, int width, int height)
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{
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cairo_perf_run (perf, "pythagoras-tree", do_pythagoras_tree, NULL);
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}
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