[Pixman] [PATCH 2/6] Add a test program for pixman_composite_trapezoids().
Søren Sandmann Pedersen
sandmann at cs.au.dk
Fri Feb 11 06:54:14 PST 2011
From: Søren Sandmann Pedersen <ssp at redhat.com>
A CRC32 based test program to check that pixman_composite_trapezoids()
actually works.
---
test/Makefile.am | 5 +
test/composite-traps-test.c | 253 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 258 insertions(+), 0 deletions(-)
create mode 100644 test/composite-traps-test.c
diff --git a/test/Makefile.am b/test/Makefile.am
index 8d8471d..0b7d05c 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -17,6 +17,7 @@ TESTPROGRAMS = \
gradient-crash-test \
alphamap \
stress-test \
+ composite-traps-test \
blitters-test \
scaling-test \
affine-test \
@@ -52,6 +53,10 @@ blitters_test_LDADD = $(TEST_LDADD)
blitters_test_LDFLAGS = @TESTPROGS_EXTRA_LDFLAGS@
blitters_test_SOURCES = blitters-test.c utils.c utils.h
+composite_traps_test_LDADD = $(TEST_LDADD)
+composite_traps_test_LDFLAGS = @TESTPROGS_EXTRA_LDFLAGS@
+composite_traps_test_SOURCES = composite-traps-test.c utils.c utils.h
+
scaling_test_LDADD = $(TEST_LDADD)
scaling_test_LDFLAGS = @TESTPROGS_EXTRA_LDFLAGS@
scaling_test_SOURCES = scaling-test.c utils.c utils.h
diff --git a/test/composite-traps-test.c b/test/composite-traps-test.c
new file mode 100644
index 0000000..8f32778
--- /dev/null
+++ b/test/composite-traps-test.c
@@ -0,0 +1,253 @@
+/* Based loosely on scaling-test */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "utils.h"
+
+#define MAX_SRC_WIDTH 48
+#define MAX_SRC_HEIGHT 48
+#define MAX_DST_WIDTH 48
+#define MAX_DST_HEIGHT 48
+#define MAX_STRIDE 4
+
+static pixman_format_code_t formats[] =
+{
+ PIXMAN_a8r8g8b8, PIXMAN_a8, PIXMAN_r5g6b5, PIXMAN_a1, PIXMAN_a4
+};
+
+static pixman_format_code_t mask_formats[] =
+{
+ PIXMAN_a1, PIXMAN_a4, PIXMAN_a8,
+};
+
+static pixman_op_t operators[] =
+{
+ PIXMAN_OP_OVER, PIXMAN_OP_ADD, PIXMAN_OP_SRC, PIXMAN_OP_IN
+};
+
+#define RANDOM_ELT(array) \
+ ((array)[lcg_rand_n(ARRAY_LENGTH((array)))])
+
+static void
+destroy_bits (pixman_image_t *image, void *data)
+{
+ fence_free (data);
+}
+
+static pixman_fixed_t
+random_fixed (int n)
+{
+ return lcg_rand_N (n << 16);
+}
+
+/*
+ * Composite operation with pseudorandom images
+ */
+uint32_t
+test_composite (int testnum,
+ int verbose)
+{
+ int i;
+ pixman_image_t * src_img;
+ pixman_image_t * dst_img;
+ pixman_region16_t clip;
+ int dst_width, dst_height;
+ int dst_stride;
+ int dst_x, dst_y;
+ int dst_bpp;
+ pixman_op_t op;
+ uint32_t * dst_bits;
+ uint32_t crc32;
+ pixman_format_code_t mask_format, dst_format;
+ pixman_trapezoid_t *traps;
+ int src_x, src_y;
+ int n_traps;
+
+ static pixman_color_t colors[] =
+ {
+ { 0xffff, 0xffff, 0xffff, 0xffff },
+ { 0x0000, 0x0000, 0x0000, 0x0000 },
+ { 0xabcd, 0xabcd, 0x0000, 0xabcd },
+ { 0x0000, 0x0000, 0x0000, 0xffff },
+ { 0x0101, 0x0101, 0x0101, 0x0101 },
+ { 0x7777, 0x6666, 0x5555, 0x9999 },
+ };
+
+ FLOAT_REGS_CORRUPTION_DETECTOR_START ();
+
+ lcg_srand (testnum);
+
+ op = RANDOM_ELT (operators);
+ mask_format = RANDOM_ELT (mask_formats);
+
+ /* Create source image */
+
+ if (lcg_rand_n (4) == 0)
+ {
+ src_img = pixman_image_create_solid_fill (
+ &(colors[lcg_rand_n (ARRAY_LENGTH (colors))]));
+
+ src_x = 10;
+ src_y = 234;
+ }
+ else
+ {
+ pixman_format_code_t src_format = RANDOM_ELT(formats);
+ int src_bpp = (PIXMAN_FORMAT_BPP (src_format) + 7) / 8;
+ int src_width = lcg_rand_n (MAX_SRC_WIDTH) + 1;
+ int src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1;
+ int src_stride = src_width * src_bpp + lcg_rand_n (MAX_STRIDE) * src_bpp;
+ uint32_t *bits;
+
+ src_x = -(src_width / 4) + lcg_rand_n (src_width * 3 / 2);
+ src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2);
+
+ src_stride = (src_stride + 3) & ~3;
+
+ bits = (uint32_t *)make_random_bytes (src_stride * src_height);
+
+ src_img = pixman_image_create_bits (
+ src_format, src_width, src_height, bits, src_stride);
+
+ pixman_image_set_destroy_function (src_img, destroy_bits, bits);
+
+ if (lcg_rand_n (8) == 0)
+ {
+ pixman_box16_t clip_boxes[2];
+ int n = lcg_rand_n (2) + 1;
+
+ for (i = 0; i < n; i++)
+ {
+ clip_boxes[i].x1 = lcg_rand_n (src_width);
+ clip_boxes[i].y1 = lcg_rand_n (src_height);
+ clip_boxes[i].x2 =
+ clip_boxes[i].x1 + lcg_rand_n (src_width - clip_boxes[i].x1);
+ clip_boxes[i].y2 =
+ clip_boxes[i].y1 + lcg_rand_n (src_height - clip_boxes[i].y1);
+
+ if (verbose)
+ {
+ printf ("source clip box: [%d,%d-%d,%d]\n",
+ clip_boxes[i].x1, clip_boxes[i].y1,
+ clip_boxes[i].x2, clip_boxes[i].y2);
+ }
+ }
+
+ pixman_region_init_rects (&clip, clip_boxes, n);
+ pixman_image_set_clip_region (src_img, &clip);
+ pixman_image_set_source_clipping (src_img, 1);
+ pixman_region_fini (&clip);
+ }
+ }
+
+ /* Create destination image */
+ {
+ dst_format = RANDOM_ELT(formats);
+ dst_bpp = (PIXMAN_FORMAT_BPP (dst_format) + 7) / 8;
+ dst_width = lcg_rand_n (MAX_DST_WIDTH) + 1;
+ dst_height = lcg_rand_n (MAX_DST_HEIGHT) + 1;
+ dst_stride = dst_width * dst_bpp + lcg_rand_n (MAX_STRIDE) * dst_bpp;
+ dst_stride = (dst_stride + 3) & ~3;
+
+ dst_bits = (uint32_t *)make_random_bytes (dst_stride * dst_height);
+
+ dst_x = -(dst_width / 4) + lcg_rand_n (dst_width * 3 / 2);
+ dst_y = -(dst_height / 4) + lcg_rand_n (dst_height * 3 / 2);
+
+ dst_img = pixman_image_create_bits (
+ dst_format, dst_width, dst_height, dst_bits, dst_stride);
+ }
+
+ /* Create traps */
+ {
+ int i;
+
+ n_traps = lcg_rand_n (25);
+ traps = fence_malloc (n_traps * sizeof (pixman_trapezoid_t));
+
+ for (i = 0; i < n_traps; ++i)
+ {
+ pixman_trapezoid_t *t = &(traps[i]);
+
+ t->top = random_fixed (MAX_DST_HEIGHT) - MAX_DST_HEIGHT / 2;
+ t->bottom = t->top + random_fixed (MAX_DST_HEIGHT);
+ t->left.p1.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2;
+ t->left.p1.y = t->top - random_fixed (50);
+ t->left.p2.x = random_fixed (MAX_DST_WIDTH) - MAX_DST_WIDTH / 2;
+ t->left.p2.y = t->bottom + random_fixed (50);
+ t->right.p1.x = t->left.p1.x + random_fixed (MAX_DST_WIDTH);
+ t->right.p1.y = t->top - random_fixed (50);
+ t->right.p2.x = t->left.p2.x + random_fixed (MAX_DST_WIDTH);
+ t->right.p2.y = t->bottom - random_fixed (50);
+ }
+ }
+
+ if (lcg_rand_n (8) == 0)
+ {
+ pixman_box16_t clip_boxes[2];
+ int n = lcg_rand_n (2) + 1;
+ for (i = 0; i < n; i++)
+ {
+ clip_boxes[i].x1 = lcg_rand_n (dst_width);
+ clip_boxes[i].y1 = lcg_rand_n (dst_height);
+ clip_boxes[i].x2 =
+ clip_boxes[i].x1 + lcg_rand_n (dst_width - clip_boxes[i].x1);
+ clip_boxes[i].y2 =
+ clip_boxes[i].y1 + lcg_rand_n (dst_height - clip_boxes[i].y1);
+
+ if (verbose)
+ {
+ printf ("destination clip box: [%d,%d-%d,%d]\n",
+ clip_boxes[i].x1, clip_boxes[i].y1,
+ clip_boxes[i].x2, clip_boxes[i].y2);
+ }
+ }
+ pixman_region_init_rects (&clip, clip_boxes, n);
+ pixman_image_set_clip_region (dst_img, &clip);
+ pixman_region_fini (&clip);
+ }
+
+ pixman_composite_trapezoids (op, src_img, dst_img, mask_format,
+ src_x, src_y, dst_x, dst_y, n_traps, traps);
+
+ if (dst_format == PIXMAN_x8r8g8b8)
+ {
+ /* ignore unused part */
+ for (i = 0; i < dst_stride * dst_height / 4; i++)
+ dst_bits[i] &= 0xFFFFFF;
+ }
+
+ image_endian_swap (dst_img, dst_bpp * 8);
+
+ if (verbose)
+ {
+ int j;
+
+ for (i = 0; i < dst_height; i++)
+ {
+ for (j = 0; j < dst_stride; j++)
+ printf ("%02X ", *((uint8_t *)dst_bits + i * dst_stride + j));
+
+ printf ("\n");
+ }
+ }
+
+ crc32 = compute_crc32 (0, dst_bits, dst_stride * dst_height);
+
+ fence_free (dst_bits);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (dst_img);
+ fence_free (traps);
+
+ FLOAT_REGS_CORRUPTION_DETECTOR_FINISH ();
+ return crc32;
+}
+
+int
+main (int argc, const char *argv[])
+{
+ return fuzzer_test_main("composite traps", 40000, 0xA34F95C7,
+ test_composite, argc, argv);
+}
--
1.7.3.1
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