[PATCH 4/6] Add a test program, tri-test

[Søren Sandmann Pedersen]

From: Søren Sandmann Pedersen <ssp at redhat.com>

This program tests whether the new triangle support works.
---
 test/Makefile.am |    6 +++++-
 test/tri-test.c  |   48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 1 deletions(-)
 create mode 100644 test/tri-test.c

diff --git a/test/Makefile.am b/test/Makefile.am
index 0b7d05c..639fd58 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -101,7 +101,8 @@ TESTPROGRAMS_GTK =		\
 	alpha-test		\
 	screen-test		\
 	convolution-test	\
-	trap-test
+	trap-test		\
+	tri-test
 
 INCLUDES += $(GTK_CFLAGS)
 
@@ -126,6 +127,9 @@ clip_in_SOURCES = clip-in.c $(GTK_UTILS)
 trap_test_LDADD = $(GTK_LDADD)
 trap_test_SOURCES = trap-test.c $(GTK_UTILS)
 
+tri_test_LDADD = $(GTK_LDADD)
+tri_test_SOURCES = tri-test.c $(GTK_UTILS)
+
 screen_test_LDADD = $(GTK_LDADD)
 screen_test_SOURCES = screen-test.c $(GTK_UTILS)
 
diff --git a/test/tri-test.c b/test/tri-test.c
new file mode 100644
index 0000000..dd3fd17
--- /dev/null
+++ b/test/tri-test.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "utils.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 200
+#define HEIGHT 200
+
+#define POINT(x,y)							\
+    { pixman_double_to_fixed ((x)), pixman_double_to_fixed ((y)) }
+    
+    pixman_image_t *src_img, *dest_img;
+    pixman_triangle_t tris[4] =
+    {
+	{ POINT (100, 100), POINT (10, 50), POINT (110, 10) },
+	{ POINT (100, 100), POINT (150, 10), POINT (200, 50) },
+	{ POINT (100, 100), POINT (10, 170), POINT (90, 175) },
+	{ POINT (100, 100), POINT (170, 150), POINT (120, 190) },
+    };
+    pixman_color_t color = { 0x4444, 0x4444, 0xffff, 0xffff };
+    uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
+    int i;
+
+    for (i = 0; i < WIDTH * HEIGHT; ++i)
+	bits[i] = (i / HEIGHT) * 0x01010000;
+    
+    src_img = pixman_image_create_solid_fill (&color);
+    dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
+    
+    pixman_composite_triangles (PIXMAN_OP_ATOP_REVERSE,
+				src_img,
+				dest_img,
+				PIXMAN_a8,
+				200, 200,
+				35, 5,
+				ARRAY_LENGTH (tris), tris);
+    show_image (dest_img);
+    
+    pixman_image_unref (src_img);
+    pixman_image_unref (dest_img);
+    free (bits);
+    
+    return 0;
+}
-- 
1.7.3.1