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-rw-r--r--test/bug-seams.c120
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diff --git a/test/bug-seams.c b/test/bug-seams.c
deleted file mode 100644
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--- a/test/bug-seams.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Copyright 2010 Soeren Sandmann Pedersen
- *
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use, copy,
- * modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Author: Soeren Sandmann <sandmann@daimi.au.dk>
- */
-
-/* Exercises a case of seam appearing between two polygons in the image
- * backend but not in xlib [using pixman].
- *
- * The test case draws two abutting quads both individually on the
- * leftm combining them with operator ADD, and in one go on the right.
- * Both methods should show no signs of seaming at the common edge
- * between the two quads, but the individually drawn ones have a
- * slight seam.
- *
- * The cause of the seam is that there are slight differences in the
- * output of the analytical coverage rasterization and the
- * supersampling rasterization methods, both employed by
- * cairo-tor-scan-converter. When drawn individually, the scan
- * converter gets a partial view of the geometry at a time, so it ends
- * up making different decisions about which scanlines it rasterizes
- * with which method, compared to when the geometry is draw all at
- * once. Though both methods produce seamless results individually
- * (where applicable), they don't produce bit-exact identical results,
- * and hence we get seaming where they meet.
- */
-
-#include "cairo-test.h"
-
-static void
-draw_quad (cairo_t *cr,
- double x1, double y1, double x2, double y2,
- double x3, double y3, double x4, double y4)
-{
- cairo_move_to (cr, x1, y1);
- cairo_line_to (cr, x2, y2);
- cairo_line_to (cr, x3, y3);
- cairo_line_to (cr, x4, y4);
- cairo_close_path (cr);
-}
-
-static cairo_test_status_t
-draw (cairo_t *cr, int width, int height)
-{
- cairo_set_source_rgb (cr, 0, 0, 0);
- cairo_paint (cr);
-
- cairo_scale (cr, 20, 20);
- cairo_translate (cr, 5, 1);
-
- /* On the left side, we have two quads drawn one at a time and
- * combined with OPERATOR_ADD. This should be seamless, but
- * isn't. */
- cairo_push_group (cr);
- cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
-
- cairo_set_source_rgb (cr, 0, 0.6, 0);
- draw_quad (cr,
- 1.50, 1.50,
- 2.64, 1.63,
- 1.75, 2.75,
- 0.55, 2.63);
- cairo_fill (cr);
- draw_quad (cr,
- 0.55, 2.63,
- 1.75, 2.75,
- 0.98, 4.11,
- -0.35, 4.05);
- cairo_fill (cr);
-
- cairo_pop_group_to_source (cr);
- cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
- cairo_paint (cr);
-
- /* On the right side, we have the same two quads drawn both at the
- * same time. This is seamless. */
- cairo_translate (cr, 10, 0);
-
- cairo_set_source_rgb (cr, 0, 0.6, 0);
- draw_quad (cr,
- 1.50, 1.50,
- 2.64, 1.63,
- 1.75, 2.75,
- 0.55, 2.63);
- draw_quad (cr,
- 0.55, 2.63,
- 1.75, 2.75,
- 0.98, 4.11,
- -0.35, 4.05);
- cairo_fill (cr);
-
- return CAIRO_TEST_SUCCESS;
-}
-
-CAIRO_TEST (bug_seams,
- "Check the fidelity of the rasterisation.",
- "raster", /* keywords */
- "target=raster", /* requirements */
- 500, 300,
- NULL, draw)