From 81b94d725834d03f7856ae0d505a7340f1135326 Mon Sep 17 00:00:00 2001 From: =?utf8?q?S=C3=B8ren=20Sandmann=20Pedersen?= Date: Wed, 13 May 2009 13:09:45 -0400 Subject: [PATCH] Add test that shows difference in clipping with transformed vs untransformed --- test/Makefile.am | 4 ++++ test/clip-in.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) create mode 100644 test/clip-in.c diff --git a/test/Makefile.am b/test/Makefile.am index 39e3222..cb8a5ef 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -20,6 +20,7 @@ GTK_LDADD = $(TEST_LDADD) $(GTK_LIBS) TESTPROGRAMS += \ clip-test \ + clip-in \ composite-test \ gradient-test \ trap-test @@ -37,6 +38,9 @@ composite_test_SOURCES = composite-test.c utils.c utils.h clip_test_LDADD = $(GTK_LDADD) clip_test_SOURCES = clip-test.c utils.c utils.h +clip_in_LDADD = $(GTK_LDADD) +clip_in_SOURCES = clip-in.c utils.c utils.h + trap_test_LDADD = $(GTK_LDADD) trap_test_SOURCES = trap-test.c utils.c utils.h diff --git a/test/clip-in.c b/test/clip-in.c new file mode 100644 index 0000000..55459b2 --- /dev/null +++ b/test/clip-in.c @@ -0,0 +1,50 @@ +#include +#include +#include +#include "pixman.h" +#include "utils.h" + +/* This test demonstrates that clipping is done totally different depending + * on whether the source is transformed or not. + */ +int +main (int argc, char **argv) +{ +#define WIDTH 200 +#define HEIGHT 200 + +#define SMALL 25 + + uint32_t *sbits = malloc (SMALL * SMALL * 4); + uint32_t *bits = malloc (WIDTH * HEIGHT * 4); + pixman_transform_t trans = { + { + { pixman_double_to_fixed (1.0), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.1), }, + { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.1), }, + { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) } + } }; + + pixman_image_t *src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, SMALL, SMALL, sbits, 4 * SMALL); + pixman_image_t *dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, 4 * WIDTH); + + memset (bits, 0xff, WIDTH * HEIGHT * 4); + memset (sbits, 0x00, SMALL * SMALL * 4); + + pixman_image_composite (PIXMAN_OP_IN, + src_img, NULL, dest_img, + 0, 0, 0, 0, SMALL, SMALL, 200, 200); + + pixman_image_set_transform (src_img, &trans); + + pixman_image_composite (PIXMAN_OP_IN, + src_img, NULL, dest_img, + 0, 0, 0, 0, SMALL * 2, SMALL * 2, 200, 200); + + show_image (dest_img); + + pixman_image_unref (src_img); + pixman_image_unref (dest_img); + free (bits); + + return 0; +} -- 2.7.4