Grcov report - sample.c

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/*

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 * Copyright 2012 Intel Corporation

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 * Permission is hereby granted, free of charge, to any person

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 * obtaining a copy of this software and associated documentation

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 * files (the "Software"), to deal in the Software without

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 * restriction, including without limitation the rights to use, copy,

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 * modify, merge, publish, distribute, sublicense, and/or sell copies

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 * of the Software, and to permit persons to whom the Software is

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 * furnished to do so, subject to the following conditions:

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 * The above copyright notice and this permission notice shall be

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 * included in all copies or substantial portions of the Software.

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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 * Author: Chris Wilson <chris@chris-wilson.co.uk>

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*/

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#include "cairo-test.h"

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/* Test the fidelity of the rasterisation, because Cairo is my favourite

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 * driver test suite.

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*/

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#define GENERATE_REFERENCE 0

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#define WIDTH 256

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#define HEIGHT 40

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#include "../src/cairo-fixed-type-private.h"

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#define PRECISION (1 << CAIRO_FIXED_FRAC_BITS)

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static cairo_test_status_t

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vertical (cairo_t *cr, int width, int height)

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    int x;

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    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);

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    cairo_paint (cr);

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    cairo_set_source_rgba (cr, 1, 1, 1, 1);

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    for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 4) {

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	cairo_move_to (cr, x / (double)PRECISION - 2, -2);

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	cairo_rel_line_to (cr, 0, HEIGHT + 4);

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    cairo_set_line_width (cr, 2 / (double)PRECISION);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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static cairo_test_status_t

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horizontal (cairo_t *cr, int width, int height)

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    int x;

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    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);

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    cairo_paint (cr);

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    cairo_set_source_rgba (cr, 1, 1, 1, 1);

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    for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 4) {

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	cairo_move_to (cr, -2, x / (double)PRECISION - 2);

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	cairo_rel_line_to (cr, HEIGHT + 4, 0);

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    cairo_set_line_width (cr, 2 / (double)PRECISION);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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static cairo_test_status_t

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diagonal (cairo_t *cr, int width, int height)

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    int x;

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    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);

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    cairo_paint (cr);

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    cairo_set_source_rgba (cr, 1, 1, 1, 1);

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    for (x = -HEIGHT*PRECISION-2; x <= (WIDTH+HEIGHT)*PRECISION+2; x += 6) {

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	cairo_move_to (cr, x / (double)PRECISION - 2, -2);

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	cairo_rel_line_to (cr, HEIGHT + 4, HEIGHT + 4);

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    cairo_set_line_width (cr, 2 / (double)PRECISION);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (sample_vertical,

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	    "Check the fidelity of the rasterisation.",

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	    NULL, /* keywords */

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	    "target=raster slow", /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, vertical)

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CAIRO_TEST (sample_horizontal,

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	    "Check the fidelity of the rasterisation.",

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	    NULL, /* keywords */

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	    "target=raster slow", /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, horizontal)

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CAIRO_TEST (sample_diagonal,

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	    "Check the fidelity of the rasterisation.",

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	    NULL, /* keywords */

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	    "target=raster slow", /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, diagonal)