forked from AuroraMiddleware/gtk
reftests: Share reftest-compare.[ch] between GSK and GTK tests
The only non-whitespace difference is that the copy in GSK does not set the symbol's visibility. Signed-off-by: Simon McVittie <smcv@debian.org>
This commit is contained in:
Simon McVittie
parent
6b29eeeb1c
commit
1c6cf7a3b6
@ -2,7 +2,7 @@
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#include <glib/gstdio.h>
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#include <gtk/gtk.h>
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#include <stdlib.h>
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#include "reftest-compare.h"
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#include "../reftests/reftest-compare.h"
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static char *arg_output_dir = NULL;
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@ -3,7 +3,7 @@ testdatadir = join_paths(installed_test_datadir, 'gsk')
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compare_render = executable(
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'compare-render',
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['compare-render.c', 'reftest-compare.c'],
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['compare-render.c', '../reftests/reftest-compare.c'],
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dependencies: libgtk_dep,
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c_args: common_cflags,
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install: get_option('install-tests'),
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@ -1,173 +0,0 @@
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/*
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* Copyright (C) 2011 Red Hat Inc.
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*
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* Author:
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* Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "reftest-compare.h"
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static void
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get_surface_size (cairo_surface_t *surface,
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int *width,
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int *height)
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{
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cairo_t *cr;
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double x1, x2, y1, y2;
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cr = cairo_create (surface);
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cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
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cairo_destroy (cr);
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g_assert (x1 == 0 && y1 == 0);
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g_assert (x2 > 0 && y2 > 0);
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g_assert ((int) x2 == x2 && (int) y2 == y2);
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*width = x2;
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*height = y2;
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}
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static cairo_surface_t *
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coerce_surface_for_comparison (cairo_surface_t *surface,
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int width,
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int height)
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{
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cairo_surface_t *coerced;
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cairo_t *cr;
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coerced = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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width,
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height);
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cr = cairo_create (coerced);
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cairo_set_source_surface (cr, surface, 0, 0);
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cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint (cr);
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cairo_destroy (cr);
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g_assert (cairo_surface_status (coerced) == CAIRO_STATUS_SUCCESS);
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return coerced;
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}
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/* Compares two CAIRO_FORMAT_ARGB32 buffers, returning NULL if the
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* buffers are equal or a surface containing a diff between the two
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* surfaces.
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*
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* This function should be rewritten to compare all formats supported by
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* cairo_format_t instead of taking a mask as a parameter.
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*
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* This function is originally from cairo:test/buffer-diff.c.
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* Copyright © 2004 Richard D. Worth
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*/
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static cairo_surface_t *
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buffer_diff_core (const guchar *buf_a,
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int stride_a,
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const guchar *buf_b,
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int stride_b,
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int width,
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int height)
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{
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int x, y;
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guchar *buf_diff = NULL;
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int stride_diff = 0;
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cairo_surface_t *diff = NULL;
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for (y = 0; y < height; y++)
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{
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const guint32 *row_a = (const guint32 *) (buf_a + y * stride_a);
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const guint32 *row_b = (const guint32 *) (buf_b + y * stride_b);
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guint32 *row = (guint32 *) (buf_diff + y * stride_diff);
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for (x = 0; x < width; x++)
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{
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int channel;
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guint32 diff_pixel = 0;
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/* check if the pixels are the same */
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if (row_a[x] == row_b[x])
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continue;
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if (diff == NULL)
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{
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diff = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
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width,
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height);
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g_assert (cairo_surface_status (diff) == CAIRO_STATUS_SUCCESS);
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buf_diff = cairo_image_surface_get_data (diff);
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stride_diff = cairo_image_surface_get_stride (diff);
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row = (guint32 *) (buf_diff + y * stride_diff);
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}
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/* calculate a difference value for all 4 channels */
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for (channel = 0; channel < 4; channel++)
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{
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int value_a = (row_a[x] >> (channel*8)) & 0xff;
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int value_b = (row_b[x] >> (channel*8)) & 0xff;
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guint channel_diff;
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channel_diff = ABS (value_a - value_b);
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channel_diff *= 4; /* emphasize */
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if (channel_diff)
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channel_diff += 128; /* make sure it's visible */
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if (channel_diff > 255)
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channel_diff = 255;
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diff_pixel |= channel_diff << (channel*8);
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}
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if ((diff_pixel & 0x00ffffff) == 0)
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{
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/* alpha only difference, convert to luminance */
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guint8 alpha = diff_pixel >> 24;
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diff_pixel = alpha * 0x010101;
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}
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row[x] = diff_pixel;
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}
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}
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return diff;
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}
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cairo_surface_t *
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reftest_compare_surfaces (cairo_surface_t *surface1,
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cairo_surface_t *surface2)
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{
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int w1, h1, w2, h2, w, h;
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cairo_surface_t *coerced1, *coerced2, *diff;
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get_surface_size (surface1, &w1, &h1);
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get_surface_size (surface2, &w2, &h2);
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w = MAX (w1, w2);
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h = MAX (h1, h2);
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coerced1 = coerce_surface_for_comparison (surface1, w, h);
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coerced2 = coerce_surface_for_comparison (surface2, w, h);
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diff = buffer_diff_core (cairo_image_surface_get_data (coerced1),
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cairo_image_surface_get_stride (coerced1),
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cairo_image_surface_get_data (coerced2),
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cairo_image_surface_get_stride (coerced2),
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w, h);
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cairo_surface_destroy (coerced1);
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cairo_surface_destroy (coerced2);
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return diff;
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}
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@ -1,30 +0,0 @@
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/* GTK - The GIMP Toolkit
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* Copyright (C) 2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __REFTEST_COMPARE_H__
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#define __REFTEST_COMPARE_H__
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#include <gtk/gtk.h>
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G_BEGIN_DECLS
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cairo_surface_t * reftest_compare_surfaces (cairo_surface_t *surface1,
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cairo_surface_t *surface2);
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G_END_DECLS
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#endif /* __REFTEST_COMPARE_H__ */
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