[Pixman] [PATCH v2] test: Add new fuzz tester targeting solid images
Ben Avison
bavison at riscosopen.org
Thu May 7 11:32:46 PDT 2015
This places a heavier emphasis on solid images than the other fuzz testers,
and tests both single-pixel repeating bitmap images as well as those created
using pixman_image_create_solid_fill(). In the former case, it also
exercises the case where the bitmap contents are written to after the
image's first use, which is not a use-case that any other test has
previously covered.
---
test/Makefile.sources | 1 +
test/solid-test.c | 348 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 349 insertions(+), 0 deletions(-)
create mode 100644 test/solid-test.c
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 8b0e855..f09c3e4 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -23,6 +23,7 @@ TESTPROGRAMS = \
composite-traps-test \
region-contains-test \
glyph-test \
+ solid-test \
stress-test \
blitters-test \
affine-test \
diff --git a/test/solid-test.c b/test/solid-test.c
new file mode 100644
index 0000000..4745b1f
--- /dev/null
+++ b/test/solid-test.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright © 2015 RISC OS Open Ltd
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The copyright holders make no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+ * Author: Ben Avison (bavison at riscosopen.org)
+ *
+ */
+
+#include "utils.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+#define WIDTH 32
+#define HEIGHT 32
+
+static const pixman_op_t op_list[] = {
+ PIXMAN_OP_SRC,
+ PIXMAN_OP_OVER,
+ PIXMAN_OP_ADD,
+ PIXMAN_OP_CLEAR,
+ PIXMAN_OP_SRC,
+ PIXMAN_OP_DST,
+ PIXMAN_OP_OVER,
+ PIXMAN_OP_OVER_REVERSE,
+ PIXMAN_OP_IN,
+ PIXMAN_OP_IN_REVERSE,
+ PIXMAN_OP_OUT,
+ PIXMAN_OP_OUT_REVERSE,
+ PIXMAN_OP_ATOP,
+ PIXMAN_OP_ATOP_REVERSE,
+ PIXMAN_OP_XOR,
+ PIXMAN_OP_ADD,
+ PIXMAN_OP_MULTIPLY,
+ PIXMAN_OP_SCREEN,
+ PIXMAN_OP_OVERLAY,
+ PIXMAN_OP_DARKEN,
+ PIXMAN_OP_LIGHTEN,
+ PIXMAN_OP_HARD_LIGHT,
+ PIXMAN_OP_DIFFERENCE,
+ PIXMAN_OP_EXCLUSION,
+#if 0 /* these use floating point math and are not always bitexact on different platforms */
+ PIXMAN_OP_SATURATE,
+ PIXMAN_OP_DISJOINT_CLEAR,
+ PIXMAN_OP_DISJOINT_SRC,
+ PIXMAN_OP_DISJOINT_DST,
+ PIXMAN_OP_DISJOINT_OVER,
+ PIXMAN_OP_DISJOINT_OVER_REVERSE,
+ PIXMAN_OP_DISJOINT_IN,
+ PIXMAN_OP_DISJOINT_IN_REVERSE,
+ PIXMAN_OP_DISJOINT_OUT,
+ PIXMAN_OP_DISJOINT_OUT_REVERSE,
+ PIXMAN_OP_DISJOINT_ATOP,
+ PIXMAN_OP_DISJOINT_ATOP_REVERSE,
+ PIXMAN_OP_DISJOINT_XOR,
+ PIXMAN_OP_CONJOINT_CLEAR,
+ PIXMAN_OP_CONJOINT_SRC,
+ PIXMAN_OP_CONJOINT_DST,
+ PIXMAN_OP_CONJOINT_OVER,
+ PIXMAN_OP_CONJOINT_OVER_REVERSE,
+ PIXMAN_OP_CONJOINT_IN,
+ PIXMAN_OP_CONJOINT_IN_REVERSE,
+ PIXMAN_OP_CONJOINT_OUT,
+ PIXMAN_OP_CONJOINT_OUT_REVERSE,
+ PIXMAN_OP_CONJOINT_ATOP,
+ PIXMAN_OP_CONJOINT_ATOP_REVERSE,
+ PIXMAN_OP_CONJOINT_XOR,
+ PIXMAN_OP_COLOR_DODGE,
+ PIXMAN_OP_COLOR_BURN,
+ PIXMAN_OP_SOFT_LIGHT,
+ PIXMAN_OP_HSL_HUE,
+ PIXMAN_OP_HSL_SATURATION,
+ PIXMAN_OP_HSL_COLOR,
+ PIXMAN_OP_HSL_LUMINOSITY,
+#endif
+};
+
+/* The first eight format in the list are by far the most widely
+ * used formats, so we test those more than the others
+ */
+#define N_MOST_LIKELY_FORMATS 8
+
+static const pixman_format_code_t img_fmt_list[] = {
+ PIXMAN_a8r8g8b8,
+ PIXMAN_a8b8g8r8,
+ PIXMAN_x8r8g8b8,
+ PIXMAN_x8b8g8r8,
+ PIXMAN_r5g6b5,
+ PIXMAN_b5g6r5,
+ PIXMAN_a8,
+ PIXMAN_a1,
+ PIXMAN_r3g3b2,
+ PIXMAN_b8g8r8a8,
+ PIXMAN_b8g8r8x8,
+ PIXMAN_r8g8b8a8,
+ PIXMAN_r8g8b8x8,
+ PIXMAN_x14r6g6b6,
+ PIXMAN_r8g8b8,
+ PIXMAN_b8g8r8,
+#if 0 /* These are going to use floating point in the near future */
+ PIXMAN_x2r10g10b10,
+ PIXMAN_a2r10g10b10,
+ PIXMAN_x2b10g10r10,
+ PIXMAN_a2b10g10r10,
+#endif
+ PIXMAN_a1r5g5b5,
+ PIXMAN_x1r5g5b5,
+ PIXMAN_a1b5g5r5,
+ PIXMAN_x1b5g5r5,
+ PIXMAN_a4r4g4b4,
+ PIXMAN_x4r4g4b4,
+ PIXMAN_a4b4g4r4,
+ PIXMAN_x4b4g4r4,
+ PIXMAN_r3g3b2,
+ PIXMAN_b2g3r3,
+ PIXMAN_a2r2g2b2,
+ PIXMAN_a2b2g2r2,
+ PIXMAN_c8,
+ PIXMAN_g8,
+ PIXMAN_x4c4,
+ PIXMAN_x4g4,
+ PIXMAN_c4,
+ PIXMAN_g4,
+ PIXMAN_g1,
+ PIXMAN_x4a4,
+ PIXMAN_a4,
+ PIXMAN_r1g2b1,
+ PIXMAN_b1g2r1,
+ PIXMAN_a1r1g1b1,
+ PIXMAN_a1b1g1r1,
+ PIXMAN_null
+};
+
+static const pixman_format_code_t mask_fmt_list[] = {
+ PIXMAN_a8r8g8b8,
+ PIXMAN_a8,
+ PIXMAN_a4,
+ PIXMAN_a1,
+ PIXMAN_null
+};
+
+static pixman_indexed_t rgb_palette[9];
+static pixman_indexed_t y_palette[9];
+
+static pixman_format_code_t
+random_format (const pixman_format_code_t *allowed_formats)
+{
+ int n = 0;
+
+ while (allowed_formats[n] != PIXMAN_null)
+ n++;
+
+ if (n > N_MOST_LIKELY_FORMATS && prng_rand_n (4) != 0)
+ n = N_MOST_LIKELY_FORMATS;
+
+ return allowed_formats[prng_rand_n (n)];
+}
+
+static pixman_image_t *
+create_multi_pixel_image (const pixman_format_code_t *allowed_formats,
+ uint32_t *buffer,
+ pixman_format_code_t *used_fmt)
+{
+ pixman_format_code_t fmt;
+ pixman_image_t *img;
+ int stride;
+
+ fmt = random_format (allowed_formats);
+ stride = (WIDTH * PIXMAN_FORMAT_BPP (fmt) + 31) / 32 * 4;
+ img = pixman_image_create_bits (fmt, WIDTH, HEIGHT, buffer, stride);
+
+ if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_COLOR)
+ pixman_image_set_indexed (img, &(rgb_palette[PIXMAN_FORMAT_BPP (fmt)]));
+ else if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_GRAY)
+ pixman_image_set_indexed (img, &(y_palette[PIXMAN_FORMAT_BPP (fmt)]));
+
+ prng_randmemset (buffer, WIDTH * HEIGHT * 4, 0);
+ image_endian_swap (img);
+
+ if (used_fmt)
+ *used_fmt = fmt;
+
+ return img;
+}
+
+static pixman_image_t *
+create_solid_image (const pixman_format_code_t *allowed_formats,
+ uint32_t *buffer,
+ pixman_format_code_t *used_fmt)
+{
+ if (prng_rand_n (2))
+ {
+ /* Use a repeating 1x1 bitmap image for solid */
+ pixman_format_code_t fmt;
+ pixman_image_t *img, *dummy_img;
+ uint32_t bpp, dummy_buf;
+
+ fmt = random_format (allowed_formats);
+ bpp = PIXMAN_FORMAT_BPP (fmt);
+ img = pixman_image_create_bits (fmt, 1, 1, buffer, 4);
+ pixman_image_set_repeat (img, PIXMAN_REPEAT_NORMAL);
+
+ if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_COLOR)
+ pixman_image_set_indexed (img, &(rgb_palette[bpp]));
+ else if (PIXMAN_FORMAT_TYPE (fmt) == PIXMAN_TYPE_GRAY)
+ pixman_image_set_indexed (img, &(y_palette[bpp]));
+
+ /* Force the flags to be calculated for image with initial
+ * bitmap contents of 0 or 2^bpp-1 by plotting from it into a
+ * separate throwaway image. It is simplest to write all 0s
+ * or all 1s to the first word irrespective of the colour
+ * depth even though we actually only care about the first
+ * pixel since the stride has to be a whole number of words.
+ */
+ *buffer = prng_rand_n (2) ? 0xFFFFFFFFu : 0;
+ dummy_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, 1, 1,
+ &dummy_buf, 4);
+ pixman_image_composite (PIXMAN_OP_SRC, img, NULL, dummy_img,
+ 0, 0, 0, 0, 0, 0, 1, 1);
+ pixman_image_unref (dummy_img);
+
+ /* Now set the bitmap contents to a random value */
+ *buffer = prng_rand ();
+ image_endian_swap (img);
+
+ if (used_fmt)
+ *used_fmt = fmt;
+
+ return img;
+ }
+ else
+ {
+ /* Use a native solid image */
+ pixman_color_t color;
+ pixman_image_t *img;
+
+ prng_randmemset (&color, sizeof color, 0);
+ img = pixman_image_create_solid_fill (&color);
+
+ if (used_fmt)
+ *used_fmt = PIXMAN_solid;
+
+ return img;
+ }
+}
+
+static uint32_t
+test_solid (int testnum, int verbose)
+{
+ pixman_op_t op;
+ uint32_t src_buf[WIDTH * HEIGHT];
+ uint32_t dst_buf[WIDTH * HEIGHT];
+ uint32_t mask_buf[WIDTH * HEIGHT];
+ pixman_image_t *src_img;
+ pixman_image_t *dst_img;
+ pixman_image_t *mask_img = NULL;
+ pixman_format_code_t src_fmt, dst_fmt, mask_fmt = PIXMAN_null;
+ pixman_bool_t ca = 0;
+ uint32_t crc32;
+
+ prng_srand (testnum);
+
+ op = op_list[prng_rand_n (ARRAY_LENGTH (op_list))];
+
+ dst_img = create_multi_pixel_image (img_fmt_list, dst_buf, &dst_fmt);
+ switch (prng_rand_n (3))
+ {
+ case 0: /* Solid source, no mask */
+ src_img = create_solid_image (img_fmt_list, src_buf, &src_fmt);
+ break;
+ case 1: /* Solid source, bitmap mask */
+ src_img = create_solid_image (img_fmt_list, src_buf, &src_fmt);
+ mask_img = create_multi_pixel_image (mask_fmt_list, mask_buf, &mask_fmt);
+ break;
+ case 2: /* Bitmap image, solid mask */
+ src_img = create_multi_pixel_image (img_fmt_list, src_buf, &src_fmt);
+ mask_img = create_solid_image (mask_fmt_list, mask_buf, &mask_fmt);
+ break;
+ }
+
+ if (mask_img)
+ {
+ ca = prng_rand_n (2);
+ pixman_image_set_component_alpha (mask_img, ca);
+ }
+
+ if (verbose)
+ {
+ printf ("op=%s\n", operator_name (op));
+ printf ("src_fmt=%s, dst_fmt=%s, mask_fmt=%s\n",
+ format_name (src_fmt), format_name (dst_fmt),
+ format_name (mask_fmt));
+ printf ("src_size=%u, mask_size=%u, component_alpha=%u\n",
+ src_fmt == PIXMAN_solid ? 1 : src_img->bits.width,
+ !mask_img || mask_fmt == PIXMAN_solid ? 1 : mask_img->bits.width,
+ ca);
+ }
+
+ pixman_image_composite (op, src_img, mask_img, dst_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ if (verbose)
+ print_image (dst_img);
+
+ crc32 = compute_crc32_for_image (0, dst_img);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (dst_img);
+ if (mask_img)
+ pixman_image_unref (mask_img);
+
+ return crc32;
+}
+
+int
+main (int argc, const char *argv[])
+{
+ int i;
+
+ prng_srand (0);
+
+ for (i = 1; i <= 8; i++)
+ {
+ initialize_palette (&(rgb_palette[i]), i, TRUE);
+ initialize_palette (&(y_palette[i]), i, FALSE);
+ }
+
+ return fuzzer_test_main ("solid", 500000,
+ 0x1B6DFF8D,
+ test_solid, argc, argv);
+}
--
1.7.5.4
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