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From 364406e03f9651aacb1bc684de6c00a27f9df66d Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@nokia.com>
Date: Mon, 19 Oct 2009 20:32:55 +0300
Subject: [PATCH 2/6] Test program for pixman_blt function
It can do some basic correctness tests and also check whether
overlapping of source and destination images is supported.
---
test/Makefile.am | 2 +
test/overlapped-blt-test.c | 136 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 138 insertions(+), 0 deletions(-)
create mode 100644 test/overlapped-blt-test.c
diff --git a/test/Makefile.am b/test/Makefile.am
index 89d32e9..40c305f 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -9,6 +9,7 @@ TESTPROGRAMS = \
fetch-test \
oob-test \
window-test \
+ overlapped-blt-test \
trap-crasher
fetch_test_LDADD = $(TEST_LDADD)
@@ -17,6 +18,7 @@ composite_LDADD = $(TEST_LDADD)
trap_crasher_LDADD = $(TEST_LDADD)
oob_test_LDADD = $(TEST_LDADD)
window_test_LDADD = $(TEST_LDADD)
+overlapped_blt_test_LDADD = $(TEST_LDADD)
blitters_test_LDADD = $(TEST_LDADD)
blitters_test_SOURCES = blitters-test.c utils.c utils.h
diff --git a/test/overlapped-blt-test.c b/test/overlapped-blt-test.c
new file mode 100644
index 0000000..95fbc54
--- /dev/null
+++ b/test/overlapped-blt-test.c
@@ -0,0 +1,136 @@
+/*
+ * A small test program which can check whether pixman_blt function
+ * can support overlapping of source and destination images.
+ * Efficient blit with overlapping is useful for scrolling.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman.h"
+
+/* reference implementation (slow) */
+static void
+trivial_copy8_2d (
+ uint8_t *dst, int dst_stride,
+ uint8_t *src, int src_stride,
+ int dx, int dy, int sx, int sy,
+ int w, int h)
+{
+ int x, y;
+ uint8_t *tmp = malloc (src_stride * (sy + h));
+ memcpy (tmp, src, src_stride * (sy + h));
+ for (y = 0; y < h; y++)
+ {
+ for (x = 0; x < w; x++)
+ {
+ *(dst + (dy + y) * dst_stride + dx + x) =
+ *(tmp + (sy + y) * src_stride + sx + x);
+ }
+ }
+ free (tmp);
+}
+
+static void
+trivial_copy_2d (
+ uint8_t *dst, int dst_stride,
+ uint8_t *src, int src_stride,
+ int dx, int dy, int sx, int sy,
+ int w, int h, int bpp)
+{
+ trivial_copy8_2d (dst, dst_stride, src, src_stride,
+ dx * (bpp / 8), dy, sx * (bpp / 8), sy, w * (bpp / 8), h);
+}
+
+/* now the test itself */
+
+#define ST_UNSUPPORTED 1
+#define ST_NORMAL_BUG 2
+#define ST_OVERLAPPED_BUG 4
+
+#define MAX_SIZE_X 64
+#define MAX_SIZE_Y 64
+
+static void print_result(int bpp, int flags)
+{
+ printf("bpp=%d, supported=%d, normal_ok=%d, overlapped_ok=%d\n",
+ bpp,
+ !(flags & ST_UNSUPPORTED),
+ !(flags & ST_NORMAL_BUG),
+ !(flags & ST_OVERLAPPED_BUG));
+}
+
+int main()
+{
+ int c = 100000, r;
+ int bpp_st[33] = {0};
+ srand(0);
+ while (c-- > 0)
+ {
+ uint8_t *src1, *src2, *src3;
+ int i;
+ int sizex = rand() % MAX_SIZE_X + 1;
+ int sizey = rand() % MAX_SIZE_Y + 1;
+ int sx = rand() % sizex;
+ int sy = rand() % sizey;
+ int dx = rand() % sizex;
+ int dy = rand() % sizey;
+ int w = rand() % sizex;
+ int h = rand() % sizex;
+ int bpp = 8 * (1 << (rand() % 3));
+ int stride_delta = rand() % 8;
+ int bufsize;
+ if ((sizex + stride_delta) % 4)
+ stride_delta += 4 - ((sizex + stride_delta) % 4);
+ bufsize = (sizex + stride_delta) * sizey * bpp / 8;
+ src1 = malloc (bufsize);
+ src2 = malloc (bufsize);
+ src3 = malloc (bufsize);
+ for (i = 0; i < bufsize; i++)
+ src1[i] = rand();
+ memcpy (src2, src1, bufsize);
+ memcpy (src3, src1, bufsize);
+ if (sx + w > sizex)
+ w = sizex - sx;
+ if (dx + w > sizex)
+ w = sizex - dx;
+ if (sy + h > sizey)
+ h = sizey - sy;
+ if (dy + h > sizey)
+ h = sizey - dy;
+ /* get reference result */
+ trivial_copy_2d (src1, (sizex + stride_delta) * bpp / 8,
+ src1, (sizex + stride_delta) * bpp / 8,
+ dx, dy, sx, sy, w, h, bpp);
+ /* check nonoverlapped pixman result */
+ r = pixman_blt ((uint32_t *)src3, (uint32_t *)src2,
+ (sizex + stride_delta) * bpp / 8 / 4,
+ (sizex + stride_delta) * bpp / 8 / 4,
+ bpp, bpp, sx, sy, dx, dy, w, h);
+ if (!r)
+ bpp_st[bpp] |= ST_UNSUPPORTED;
+ if (memcmp (src1, src2, bufsize) != 0)
+ bpp_st[bpp] |= ST_NORMAL_BUG;
+ /* check overlapped pixman result */
+ r = pixman_blt ((uint32_t *)src3, (uint32_t *)src3,
+ (sizex + stride_delta) * bpp / 8 / 4,
+ (sizex + stride_delta) * bpp / 8 / 4,
+ bpp, bpp, sx, sy, dx, dy, w, h);
+ if (!r)
+ bpp_st[bpp] |= ST_UNSUPPORTED;
+ if (memcmp (src1, src3, bufsize) != 0)
+ bpp_st[bpp] |= ST_OVERLAPPED_BUG;
+ /* free buffers */
+ free (src1);
+ free (src2);
+ free (src3);
+ }
+
+ /* report results */
+ print_result (8, bpp_st[8]);
+ print_result (16, bpp_st[16]);
+ print_result (32, bpp_st[32]);
+
+ return 0;
+}
--
1.6.2.4
|
