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-rw-r--r--pixman/demos/Makefile.am34
-rw-r--r--pixman/demos/alpha-test.c117
-rw-r--r--pixman/demos/clip-in.c50
-rw-r--r--pixman/demos/clip-test.c97
-rw-r--r--pixman/demos/composite-test.c191
-rw-r--r--pixman/demos/convolution-test.c47
-rw-r--r--pixman/demos/gradient-test.c89
-rw-r--r--pixman/demos/gtk-utils.c115
-rw-r--r--pixman/demos/gtk-utils.h13
-rw-r--r--pixman/demos/radial-test.c198
-rw-r--r--pixman/demos/screen-test.c44
-rw-r--r--pixman/demos/trap-test.c49
12 files changed, 1044 insertions, 0 deletions
diff --git a/pixman/demos/Makefile.am b/pixman/demos/Makefile.am
new file mode 100644
index 000000000..2dcdfd350
--- /dev/null
+++ b/pixman/demos/Makefile.am
@@ -0,0 +1,34 @@
+if HAVE_GTK
+
+AM_CFLAGS = @OPENMP_CFLAGS@
+AM_LDFLAGS = @OPENMP_CFLAGS@
+
+LDADD = $(GTK_LIBS) $(top_builddir)/pixman/libpixman-1.la -lm
+INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(GTK_CFLAGS)
+
+GTK_UTILS = gtk-utils.c gtk-utils.h
+
+DEMOS = \
+ clip-test \
+ clip-in \
+ composite-test \
+ gradient-test \
+ radial-test \
+ alpha-test \
+ screen-test \
+ convolution-test \
+ trap-test
+
+gradient_test_SOURCES = gradient-test.c $(GTK_UTILS)
+alpha_test_SOURCES = alpha-test.c $(GTK_UTILS)
+composite_test_SOURCES = composite-test.c $(GTK_UTILS)
+clip_test_SOURCES = clip-test.c $(GTK_UTILS)
+clip_in_SOURCES = clip-in.c $(GTK_UTILS)
+trap_test_SOURCES = trap-test.c $(GTK_UTILS)
+screen_test_SOURCES = screen-test.c $(GTK_UTILS)
+convolution_test_SOURCES = convolution-test.c $(GTK_UTILS)
+radial_test_SOURCES = radial-test.c ../test/utils.c ../test/utils.h $(GTK_UTILS)
+
+noinst_PROGRAMS = $(DEMOS)
+
+endif
diff --git a/pixman/demos/alpha-test.c b/pixman/demos/alpha-test.c
new file mode 100644
index 000000000..92c208142
--- /dev/null
+++ b/pixman/demos/alpha-test.c
@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 400
+#define HEIGHT 200
+
+ uint32_t *alpha = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *src = malloc (WIDTH * HEIGHT * 4);
+ pixman_image_t *grad_img;
+ pixman_image_t *alpha_img;
+ pixman_image_t *dest_img;
+ pixman_image_t *src_img;
+ int i;
+ pixman_gradient_stop_t stops[2] =
+ {
+ { pixman_int_to_fixed (0), { 0x0000, 0x0000, 0x0000, 0x0000 } },
+ { pixman_int_to_fixed (1), { 0xffff, 0x0000, 0x1111, 0xffff } }
+ };
+ pixman_point_fixed_t p1 = { pixman_double_to_fixed (0), 0 };
+ pixman_point_fixed_t p2 = { pixman_double_to_fixed (WIDTH),
+ pixman_int_to_fixed (0) };
+#if 0
+ pixman_transform_t trans = {
+ { { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) }
+ }
+ };
+#else
+ pixman_transform_t trans = {
+ { { pixman_fixed_1, 0, 0 },
+ { 0, pixman_fixed_1, 0 },
+ { 0, 0, pixman_fixed_1 } }
+ };
+#endif
+
+ pixman_point_fixed_t c_inner;
+ pixman_point_fixed_t c_outer;
+ pixman_fixed_t r_inner;
+ pixman_fixed_t r_outer;
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ alpha[i] = 0x4f00004f; /* pale blue */
+
+ alpha_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ alpha,
+ WIDTH * 4);
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ dest[i] = 0xffffff00; /* yellow */
+
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ dest,
+ WIDTH * 4);
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ src[i] = 0xffff0000;
+
+ src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ src,
+ WIDTH * 4);
+
+ c_inner.x = pixman_double_to_fixed (50.0);
+ c_inner.y = pixman_double_to_fixed (50.0);
+ c_outer.x = pixman_double_to_fixed (50.0);
+ c_outer.y = pixman_double_to_fixed (50.0);
+ r_inner = 0;
+ r_outer = pixman_double_to_fixed (50.0);
+
+#if 0
+ grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
+ stops, 2);
+#endif
+#if 0
+ grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
+ stops, 2);
+ grad_img = pixman_image_create_linear_gradient (&c_inner, &c_outer,
+ r_inner, r_outer,
+ stops, 2);
+#endif
+
+ grad_img = pixman_image_create_linear_gradient (&p1, &p2,
+ stops, 2);
+
+ pixman_image_set_transform (grad_img, &trans);
+ pixman_image_set_repeat (grad_img, PIXMAN_REPEAT_PAD);
+
+ pixman_image_composite (PIXMAN_OP_OVER, grad_img, NULL, alpha_img,
+ 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
+
+ pixman_image_set_alpha_map (src_img, alpha_img, 10, 10);
+
+ pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,
+ 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
+
+ printf ("0, 0: %x\n", dest[0]);
+ printf ("10, 10: %x\n", dest[10 * 10 + 10]);
+ printf ("w, h: %x\n", dest[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
+
+ show_image (dest_img);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (grad_img);
+ pixman_image_unref (alpha_img);
+ free (dest);
+
+ return 0;
+}
diff --git a/pixman/demos/clip-in.c b/pixman/demos/clip-in.c
new file mode 100644
index 000000000..51579811f
--- /dev/null
+++ b/pixman/demos/clip-in.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman.h"
+#include "gtk-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;
+}
diff --git a/pixman/demos/clip-test.c b/pixman/demos/clip-test.c
new file mode 100644
index 000000000..aa0df4482
--- /dev/null
+++ b/pixman/demos/clip-test.c
@@ -0,0 +1,97 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+#define WIDTH 200
+#define HEIGHT 200
+
+static pixman_image_t *
+create_solid_bits (uint32_t pixel)
+{
+ uint32_t *pixels = malloc (WIDTH * HEIGHT * 4);
+ int i;
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ pixels[i] = pixel;
+
+ return pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ pixels,
+ WIDTH * 4);
+}
+
+int
+main (int argc, char **argv)
+{
+ pixman_image_t *gradient_img;
+ pixman_image_t *src_img, *dst_img;
+ pixman_gradient_stop_t stops[2] =
+ {
+ { pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } },
+ { pixman_int_to_fixed (1), { 0xffff, 0xffff, 0x0000, 0xffff } }
+ };
+#if 0
+ pixman_point_fixed_t p1 = { 0, 0 };
+ pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH),
+ pixman_int_to_fixed (HEIGHT) };
+#endif
+ pixman_point_fixed_t c_inner;
+ pixman_point_fixed_t c_outer;
+ pixman_fixed_t r_inner;
+ pixman_fixed_t r_outer;
+ pixman_region32_t clip_region;
+ pixman_transform_t trans = {
+ { { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) }
+ }
+ };
+
+ src_img = create_solid_bits (0xff0000ff);
+
+ c_inner.x = pixman_double_to_fixed (100.0);
+ c_inner.y = pixman_double_to_fixed (100.0);
+ c_outer.x = pixman_double_to_fixed (100.0);
+ c_outer.y = pixman_double_to_fixed (100.0);
+ r_inner = 0;
+ r_outer = pixman_double_to_fixed (100.0);
+
+ gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer,
+ r_inner, r_outer,
+ stops, 2);
+
+#if 0
+ gradient_img = pixman_image_create_linear_gradient (&p1, &p2,
+ stops, 2);
+
+#endif
+
+ pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ pixman_region32_init_rect (&clip_region, 50, 0, 100, 200);
+ pixman_image_set_clip_region32 (src_img, &clip_region);
+ pixman_image_set_source_clipping (src_img, TRUE);
+ pixman_image_set_has_client_clip (src_img, TRUE);
+ pixman_image_set_transform (src_img, &trans);
+ pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);
+
+ dst_img = create_solid_bits (0xffff0000);
+ pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+
+#if 0
+ printf ("0, 0: %x\n", src[0]);
+ printf ("10, 10: %x\n", src[10 * 10 + 10]);
+ printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
+#endif
+
+ show_image (dst_img);
+
+ pixman_image_unref (gradient_img);
+ pixman_image_unref (src_img);
+
+ return 0;
+}
diff --git a/pixman/demos/composite-test.c b/pixman/demos/composite-test.c
new file mode 100644
index 000000000..79d5d5eac
--- /dev/null
+++ b/pixman/demos/composite-test.c
@@ -0,0 +1,191 @@
+#include <gtk/gtk.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+#define WIDTH 60
+#define HEIGHT 60
+
+typedef struct {
+ const char *name;
+ pixman_op_t op;
+} operator_t;
+
+static const operator_t operators[] = {
+ { "CLEAR", PIXMAN_OP_CLEAR },
+ { "SRC", PIXMAN_OP_SRC },
+ { "DST", PIXMAN_OP_DST },
+ { "OVER", PIXMAN_OP_OVER },
+ { "OVER_REVERSE", PIXMAN_OP_OVER_REVERSE },
+ { "IN", PIXMAN_OP_IN },
+ { "IN_REVERSE", PIXMAN_OP_IN_REVERSE },
+ { "OUT", PIXMAN_OP_OUT },
+ { "OUT_REVERSE", PIXMAN_OP_OUT_REVERSE },
+ { "ATOP", PIXMAN_OP_ATOP },
+ { "ATOP_REVERSE", PIXMAN_OP_ATOP_REVERSE },
+ { "XOR", PIXMAN_OP_XOR },
+ { "ADD", PIXMAN_OP_ADD },
+ { "SATURATE", PIXMAN_OP_SATURATE },
+
+ { "MULTIPLY", PIXMAN_OP_MULTIPLY },
+ { "SCREEN", PIXMAN_OP_SCREEN },
+ { "OVERLAY", PIXMAN_OP_OVERLAY },
+ { "DARKEN", PIXMAN_OP_DARKEN },
+ { "LIGHTEN", PIXMAN_OP_LIGHTEN },
+ { "COLOR_DODGE", PIXMAN_OP_COLOR_DODGE },
+ { "COLOR_BURN", PIXMAN_OP_COLOR_BURN },
+ { "HARD_LIGHT", PIXMAN_OP_HARD_LIGHT },
+ { "SOFT_LIGHT", PIXMAN_OP_SOFT_LIGHT },
+ { "DIFFERENCE", PIXMAN_OP_DIFFERENCE },
+ { "EXCLUSION", PIXMAN_OP_EXCLUSION },
+ { "HSL_HUE", PIXMAN_OP_HSL_HUE },
+ { "HSL_SATURATION", PIXMAN_OP_HSL_SATURATION },
+ { "HSL_COLOR", PIXMAN_OP_HSL_COLOR },
+ { "HSL_LUMINOSITY", PIXMAN_OP_HSL_LUMINOSITY },
+};
+
+static uint32_t
+reader (const void *src, int size)
+{
+ switch (size)
+ {
+ case 1:
+ return *(uint8_t *)src;
+ case 2:
+ return *(uint16_t *)src;
+ case 4:
+ return *(uint32_t *)src;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void
+writer (void *src, uint32_t value, int size)
+{
+ switch (size)
+ {
+ case 1:
+ *(uint8_t *)src = value;
+ break;
+
+ case 2:
+ *(uint16_t *)src = value;
+ break;
+
+ case 4:
+ *(uint32_t *)src = value;
+ break;
+
+ default:
+ break;
+ }
+}
+
+int
+main (int argc, char **argv)
+{
+#define d2f pixman_double_to_fixed
+
+ GtkWidget *window, *swindow;
+ GtkWidget *table;
+ uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *src = malloc (WIDTH * HEIGHT * 4);
+ pixman_image_t *src_img;
+ pixman_image_t *dest_img;
+ pixman_point_fixed_t p1 = { -10 << 0, 0 };
+ pixman_point_fixed_t p2 = { WIDTH << 16, (HEIGHT - 10) << 16 };
+ uint16_t full = 0xcfff;
+ uint16_t low = 0x5000;
+ uint16_t alpha = 0xffff;
+ pixman_gradient_stop_t stops[6] =
+ {
+ { d2f (0.0), { full, low, low, alpha } },
+ { d2f (0.25), { full, full, low, alpha } },
+ { d2f (0.4), { low, full, low, alpha } },
+ { d2f (0.6), { low, full, full, alpha } },
+ { d2f (0.8), { low, low, full, alpha } },
+ { d2f (1.0), { full, low, full, alpha } },
+ };
+
+ int i;
+
+ gtk_init (&argc, &argv);
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+
+ gtk_window_set_default_size (GTK_WINDOW (window), 800, 600);
+
+ g_signal_connect (window, "delete-event",
+ G_CALLBACK (gtk_main_quit),
+ NULL);
+ table = gtk_table_new (G_N_ELEMENTS (operators) / 6, 6, TRUE);
+
+ src_img = pixman_image_create_linear_gradient (&p1, &p2, stops,
+ sizeof (stops) / sizeof (stops[0]));
+
+ pixman_image_set_repeat (src_img, PIXMAN_REPEAT_PAD);
+
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ dest,
+ WIDTH * 4);
+ pixman_image_set_accessors (dest_img, reader, writer);
+
+ for (i = 0; i < G_N_ELEMENTS (operators); ++i)
+ {
+ GtkWidget *image;
+ GdkPixbuf *pixbuf;
+ GtkWidget *vbox;
+ GtkWidget *label;
+ int j, k;
+
+ vbox = gtk_vbox_new (FALSE, 0);
+
+ label = gtk_label_new (operators[i].name);
+ gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 6);
+ gtk_widget_show (label);
+
+ for (j = 0; j < HEIGHT; ++j)
+ {
+ for (k = 0; k < WIDTH; ++k)
+ dest[j * WIDTH + k] = 0x7f6f6f00;
+ }
+ pixman_image_composite (operators[i].op, src_img, NULL, dest_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+ pixbuf = pixbuf_from_argb32 (pixman_image_get_data (dest_img), TRUE,
+ WIDTH, HEIGHT, WIDTH * 4);
+ image = gtk_image_new_from_pixbuf (pixbuf);
+ gtk_box_pack_start (GTK_BOX (vbox), image, FALSE, FALSE, 0);
+ gtk_widget_show (image);
+
+ gtk_table_attach_defaults (GTK_TABLE (table), vbox,
+ i % 6, (i % 6) + 1, i / 6, (i / 6) + 1);
+ gtk_widget_show (vbox);
+
+ g_object_unref (pixbuf);
+ }
+
+ pixman_image_unref (src_img);
+ free (src);
+ pixman_image_unref (dest_img);
+ free (dest);
+
+ swindow = gtk_scrolled_window_new (NULL, NULL);
+ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
+ GTK_POLICY_AUTOMATIC,
+ GTK_POLICY_AUTOMATIC);
+
+ gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (swindow), table);
+ gtk_widget_show (table);
+
+ gtk_container_add (GTK_CONTAINER (window), swindow);
+ gtk_widget_show (swindow);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+
+ return 0;
+}
diff --git a/pixman/demos/convolution-test.c b/pixman/demos/convolution-test.c
new file mode 100644
index 000000000..da284af7b
--- /dev/null
+++ b/pixman/demos/convolution-test.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 200
+#define HEIGHT 200
+
+#define d2f pixman_double_to_fixed
+
+ uint32_t *src = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *mask = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
+ pixman_fixed_t convolution[] =
+ {
+ d2f (3), d2f (3),
+ d2f (0.5), d2f (0.5), d2f (0.5),
+ d2f (0.5), d2f (0.5), d2f (0.5),
+ d2f (0.5), d2f (0.5), d2f (0.5),
+ };
+ pixman_image_t *simg, *mimg, *dimg;
+
+ int i;
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ {
+ src[i] = 0x7f007f00;
+ mask[i] = (i % 256) * 0x01000000;
+ dest[i] = 0;
+ }
+
+ simg = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, src, WIDTH * 4);
+ mimg = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, mask, WIDTH * 4);
+ dimg = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, dest, WIDTH * 4);
+
+ pixman_image_set_filter (mimg, PIXMAN_FILTER_CONVOLUTION,
+ convolution, 11);
+
+ pixman_image_composite (PIXMAN_OP_OVER, simg, mimg, dimg, 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ show_image (dimg);
+
+ return 0;
+}
diff --git a/pixman/demos/gradient-test.c b/pixman/demos/gradient-test.c
new file mode 100644
index 000000000..fc84844b0
--- /dev/null
+++ b/pixman/demos/gradient-test.c
@@ -0,0 +1,89 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 400
+#define HEIGHT 200
+
+ uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
+ pixman_image_t *src_img;
+ pixman_image_t *dest_img;
+ int i;
+ pixman_gradient_stop_t stops[2] =
+ {
+ { pixman_int_to_fixed (0), { 0xffff, 0xeeee, 0xeeee, 0xeeee } },
+ { pixman_int_to_fixed (1), { 0xffff, 0x1111, 0x1111, 0x1111 } }
+ };
+ pixman_point_fixed_t p1 = { pixman_double_to_fixed (0), 0 };
+ pixman_point_fixed_t p2 = { pixman_double_to_fixed (WIDTH / 8.),
+ pixman_int_to_fixed (0) };
+#if 0
+ pixman_transform_t trans = {
+ { { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), },
+ { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) }
+ }
+ };
+#else
+ pixman_transform_t trans = {
+ { { pixman_fixed_1, 0, 0 },
+ { 0, pixman_fixed_1, 0 },
+ { 0, 0, pixman_fixed_1 } }
+ };
+#endif
+
+ pixman_point_fixed_t c_inner;
+ pixman_point_fixed_t c_outer;
+ pixman_fixed_t r_inner;
+ pixman_fixed_t r_outer;
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ dest[i] = 0x4f00004f; /* pale blue */
+
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ dest,
+ WIDTH * 4);
+
+ c_inner.x = pixman_double_to_fixed (50.0);
+ c_inner.y = pixman_double_to_fixed (50.0);
+ c_outer.x = pixman_double_to_fixed (50.0);
+ c_outer.y = pixman_double_to_fixed (50.0);
+ r_inner = 0;
+ r_outer = pixman_double_to_fixed (50.0);
+
+ src_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
+ stops, 2);
+#if 0
+ src_img = pixman_image_create_conical_gradient (&c_inner, r_inner,
+ stops, 2);
+ src_img = pixman_image_create_linear_gradient (&c_inner, &c_outer,
+ r_inner, r_outer,
+ stops, 2);
+#endif
+
+ src_img = pixman_image_create_linear_gradient (&p1, &p2,
+ stops, 2);
+
+ pixman_image_set_transform (src_img, &trans);
+ pixman_image_set_repeat (src_img, PIXMAN_REPEAT_PAD);
+
+ pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,
+ 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);
+
+ printf ("0, 0: %x\n", dest[0]);
+ printf ("10, 10: %x\n", dest[10 * 10 + 10]);
+ printf ("w, h: %x\n", dest[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
+
+ show_image (dest_img);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (dest_img);
+ free (dest);
+
+ return 0;
+}
diff --git a/pixman/demos/gtk-utils.c b/pixman/demos/gtk-utils.c
new file mode 100644
index 000000000..f45cdc912
--- /dev/null
+++ b/pixman/demos/gtk-utils.c
@@ -0,0 +1,115 @@
+#include <gtk/gtk.h>
+#include <config.h>
+#include "pixman-private.h" /* For image->bits.format
+ * FIXME: there should probably be public API for this
+ */
+#include "gtk-utils.h"
+
+GdkPixbuf *
+pixbuf_from_argb32 (uint32_t *bits,
+ gboolean has_alpha,
+ int width,
+ int height,
+ int stride)
+{
+ GdkPixbuf *pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE,
+ 8, width, height);
+ int p_stride = gdk_pixbuf_get_rowstride (pixbuf);
+ guint32 *p_bits = (guint32 *)gdk_pixbuf_get_pixels (pixbuf);
+ int w, h;
+
+ for (h = 0; h < height; ++h)
+ {
+ for (w = 0; w < width; ++w)
+ {
+ uint32_t argb = bits[h * (stride / 4) + w];
+ guint r, g, b, a;
+ char *pb = (char *)p_bits;
+
+ pb += h * p_stride + w * 4;
+
+ r = (argb & 0x00ff0000) >> 16;
+ g = (argb & 0x0000ff00) >> 8;
+ b = (argb & 0x000000ff) >> 0;
+ a = has_alpha? (argb & 0xff000000) >> 24 : 0xff;
+
+ if (a)
+ {
+ r = (r * 255) / a;
+ g = (g * 255) / a;
+ b = (b * 255) / a;
+ }
+
+ if (r > 255) r = 255;
+ if (g > 255) g = 255;
+ if (b > 255) b = 255;
+
+ pb[0] = r;
+ pb[1] = g;
+ pb[2] = b;
+ pb[3] = a;
+ }
+ }
+
+ return pixbuf;
+}
+
+
+static gboolean
+on_expose (GtkWidget *widget, GdkEventExpose *expose, gpointer data)
+{
+ GdkPixbuf *pixbuf = data;
+
+ gdk_draw_pixbuf (widget->window, NULL,
+ pixbuf, 0, 0, 0, 0,
+ gdk_pixbuf_get_width (pixbuf),
+ gdk_pixbuf_get_height (pixbuf),
+ GDK_RGB_DITHER_NONE,
+ 0, 0);
+
+ return TRUE;
+}
+
+void
+show_image (pixman_image_t *image)
+{
+ GtkWidget *window;
+ GdkPixbuf *pixbuf;
+ int width, height, stride;
+ int argc;
+ char **argv;
+ char *arg0 = g_strdup ("pixman-test-program");
+ gboolean has_alpha;
+ pixman_format_code_t format;
+
+ argc = 1;
+ argv = (char **)&arg0;
+
+ gtk_init (&argc, &argv);
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ width = pixman_image_get_width (image);
+ height = pixman_image_get_height (image);
+ stride = pixman_image_get_stride (image);
+
+ gtk_window_set_default_size (GTK_WINDOW (window), width, height);
+
+ format = image->bits.format;
+
+ if (format == PIXMAN_a8r8g8b8)
+ has_alpha = TRUE;
+ else if (format == PIXMAN_x8r8g8b8)
+ has_alpha = FALSE;
+ else
+ g_error ("Can't deal with this format: %x\n", format);
+
+ pixbuf = pixbuf_from_argb32 (pixman_image_get_data (image), has_alpha,
+ width, height, stride);
+
+ g_signal_connect (window, "expose_event", G_CALLBACK (on_expose), pixbuf);
+ g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+}
diff --git a/pixman/demos/gtk-utils.h b/pixman/demos/gtk-utils.h
new file mode 100644
index 000000000..2cb13bcf0
--- /dev/null
+++ b/pixman/demos/gtk-utils.h
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <glib.h>
+#include <gtk/gtk.h>
+#include "pixman.h"
+
+void show_image (pixman_image_t *image);
+
+GdkPixbuf *pixbuf_from_argb32 (uint32_t *bits,
+ gboolean has_alpha,
+ int width,
+ int height,
+ int stride);
diff --git a/pixman/demos/radial-test.c b/pixman/demos/radial-test.c
new file mode 100644
index 000000000..35e90d786
--- /dev/null
+++ b/pixman/demos/radial-test.c
@@ -0,0 +1,198 @@
+#include "../test/utils.h"
+#include "gtk-utils.h"
+
+#define NUM_GRADIENTS 7
+#define NUM_STOPS 3
+#define NUM_REPEAT 4
+#define SIZE 128
+#define WIDTH (SIZE * NUM_GRADIENTS)
+#define HEIGHT (SIZE * NUM_REPEAT)
+
+/*
+ * We want to test all the possible relative positions of the start
+ * and end circle:
+ *
+ * - The start circle can be smaller/equal/bigger than the end
+ * circle. A radial gradient can be classified in one of these
+ * three cases depending on the sign of dr.
+ *
+ * - The smaller circle can be completely inside/internally
+ * tangent/outside (at least in part) of the bigger circle. This
+ * classification is the same as the one which can be computed by
+ * examining the sign of a = (dx^2 + dy^2 - dr^2).
+ *
+ * - If the two circles have the same size, neither can be inside or
+ * internally tangent
+ *
+ * This test draws radial gradients whose circles always have the same
+ * centers (0, 0) and (1, 0), but with different radiuses. From left
+ * to right:
+ *
+ * - Small start circle completely inside the end circle
+ * 0.25 -> 1.75; dr = 1.5 > 0; a = 1 - 1.50^2 < 0
+ *
+ * - Small start circle internally tangent to the end circle
+ * 0.50 -> 1.50; dr = 1.0 > 0; a = 1 - 1.00^2 = 0
+ *
+ * - Small start circle outside of the end circle
+ * 0.50 -> 1.00; dr = 0.5 > 0; a = 1 - 0.50^2 > 0
+ *
+ * - Start circle with the same size as the end circle
+ * 1.00 -> 1.00; dr = 0.0 = 0; a = 1 - 0.00^2 > 0
+ *
+ * - Small end circle outside of the start circle
+ * 1.00 -> 0.50; dr = -0.5 > 0; a = 1 - 0.50^2 > 0
+ *
+ * - Small end circle internally tangent to the start circle
+ * 1.50 -> 0.50; dr = -1.0 > 0; a = 1 - 1.00^2 = 0
+ *
+ * - Small end circle completely inside the start circle
+ * 1.75 -> 0.25; dr = -1.5 > 0; a = 1 - 1.50^2 < 0
+ *
+ */
+
+const static double radiuses[NUM_GRADIENTS] = {
+ 0.25,
+ 0.50,
+ 0.50,
+ 1.00,
+ 1.00,
+ 1.50,
+ 1.75
+};
+
+#define double_to_color(x) \
+ (((uint32_t) ((x)*65536)) - (((uint32_t) ((x)*65536)) >> 16))
+
+#define PIXMAN_STOP(offset,r,g,b,a) \
+ { pixman_double_to_fixed (offset), \
+ { \
+ double_to_color (r), \
+ double_to_color (g), \
+ double_to_color (b), \
+ double_to_color (a) \
+ } \
+ }
+
+static const pixman_gradient_stop_t stops[NUM_STOPS] = {
+ PIXMAN_STOP (0.0, 1, 0, 0, 0.75),
+ PIXMAN_STOP (0.70710678, 0, 1, 0, 0),
+ PIXMAN_STOP (1.0, 0, 0, 1, 1)
+};
+
+static pixman_image_t *
+create_radial (int index)
+{
+ pixman_point_fixed_t p0, p1;
+ pixman_fixed_t r0, r1;
+ double x0, x1, radius0, radius1, left, right, center;
+
+ x0 = 0;
+ x1 = 1;
+ radius0 = radiuses[index];
+ radius1 = radiuses[NUM_GRADIENTS - index - 1];
+
+ /* center the gradient */
+ left = MIN (x0 - radius0, x1 - radius1);
+ right = MAX (x0 + radius0, x1 + radius1);
+ center = (left + right) * 0.5;
+ x0 -= center;
+ x1 -= center;
+
+ /* scale to make it fit within a 1x1 rect centered in (0,0) */
+ x0 *= 0.25;
+ x1 *= 0.25;
+ radius0 *= 0.25;
+ radius1 *= 0.25;
+
+ p0.x = pixman_double_to_fixed (x0);
+ p0.y = pixman_double_to_fixed (0);
+
+ p1.x = pixman_double_to_fixed (x1);
+ p1.y = pixman_double_to_fixed (0);
+
+ r0 = pixman_double_to_fixed (radius0);
+ r1 = pixman_double_to_fixed (radius1);
+
+ return pixman_image_create_radial_gradient (&p0, &p1,
+ r0, r1,
+ stops, NUM_STOPS);
+}
+
+static const pixman_repeat_t repeat[NUM_REPEAT] = {
+ PIXMAN_REPEAT_NONE,
+ PIXMAN_REPEAT_NORMAL,
+ PIXMAN_REPEAT_REFLECT,
+ PIXMAN_REPEAT_PAD
+};
+
+int
+main (int argc, char **argv)
+{
+ pixman_transform_t transform;
+ pixman_image_t *src_img, *dest_img;
+ int i, j;
+
+ enable_fp_exceptions ();
+
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ NULL, 0);
+
+ pixman_transform_init_identity (&transform);
+
+ /*
+ * The create_radial() function returns gradients centered in the
+ * origin and whose interesting part fits a 1x1 square. We want to
+ * paint these gradients on a SIZExSIZE square and to make things
+ * easier we want the origin in the top-left corner of the square
+ * we want to see.
+ */
+ pixman_transform_translate (NULL, &transform,
+ pixman_double_to_fixed (0.5),
+ pixman_double_to_fixed (0.5));
+
+ pixman_transform_scale (NULL, &transform,
+ pixman_double_to_fixed (SIZE),
+ pixman_double_to_fixed (SIZE));
+
+ /*
+ * Gradients are evaluated at the center of each pixel, so we need
+ * to translate by half a pixel to trigger some interesting
+ * cornercases. In particular, the original implementation of PDF
+ * radial gradients tried to divide by 0 when using this transform
+ * on the "tangent circles" cases.
+ */
+ pixman_transform_translate (NULL, &transform,
+ pixman_double_to_fixed (0.5),
+ pixman_double_to_fixed (0.5));
+
+ for (i = 0; i < NUM_GRADIENTS; i++)
+ {
+ src_img = create_radial (i);
+ pixman_image_set_transform (src_img, &transform);
+
+ for (j = 0; j < NUM_REPEAT; j++)
+ {
+ pixman_image_set_repeat (src_img, repeat[j]);
+
+ pixman_image_composite32 (PIXMAN_OP_OVER,
+ src_img,
+ NULL,
+ dest_img,
+ 0, 0,
+ 0, 0,
+ i * SIZE, j * SIZE,
+ SIZE, SIZE);
+
+ }
+
+ pixman_image_unref (src_img);
+ }
+
+ show_image (dest_img);
+
+ pixman_image_unref (dest_img);
+
+ return 0;
+}
diff --git a/pixman/demos/screen-test.c b/pixman/demos/screen-test.c
new file mode 100644
index 000000000..e69dba3de
--- /dev/null
+++ b/pixman/demos/screen-test.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 40
+#define HEIGHT 40
+
+ uint32_t *src1 = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *src2 = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *src3 = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *dest = malloc (3 * WIDTH * 2 * HEIGHT * 4);
+ pixman_image_t *simg1, *simg2, *simg3, *dimg;
+
+ int i;
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ {
+ src1[i] = 0x7ff00000;
+ src2[i] = 0x7f00ff00;
+ src3[i] = 0x7f0000ff;
+ }
+
+ for (i = 0; i < 3 * WIDTH * 2 * HEIGHT; ++i)
+ {
+ dest[i] = 0x0;
+ }
+
+ simg1 = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, src1, WIDTH * 4);
+ simg2 = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, src2, WIDTH * 4);
+ simg3 = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, src3, WIDTH * 4);
+ dimg = pixman_image_create_bits (PIXMAN_a8r8g8b8, 3 * WIDTH, 2 * HEIGHT, dest, 3 * WIDTH * 4);
+
+ pixman_image_composite (PIXMAN_OP_SCREEN, simg1, NULL, dimg, 0, 0, 0, 0, WIDTH, HEIGHT / 4, WIDTH, HEIGHT);
+ pixman_image_composite (PIXMAN_OP_SCREEN, simg2, NULL, dimg, 0, 0, 0, 0, (WIDTH/2), HEIGHT / 4 + HEIGHT / 2, WIDTH, HEIGHT);
+ pixman_image_composite (PIXMAN_OP_SCREEN, simg3, NULL, dimg, 0, 0, 0, 0, (4 * WIDTH) / 3, HEIGHT, WIDTH, HEIGHT);
+
+ show_image (dimg);
+
+ return 0;
+}
diff --git a/pixman/demos/trap-test.c b/pixman/demos/trap-test.c
new file mode 100644
index 000000000..19295e7a5
--- /dev/null
+++ b/pixman/demos/trap-test.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman.h"
+#include "gtk-utils.h"
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 200
+#define HEIGHT 200
+
+ pixman_image_t *src_img;
+ pixman_image_t *mask_img;
+ pixman_image_t *dest_img;
+ pixman_trap_t trap;
+ pixman_color_t white = { 0x0000, 0xffff, 0x0000, 0xffff };
+ uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
+ uint32_t *mbits = malloc (WIDTH * HEIGHT);
+
+ memset (mbits, 0, WIDTH * HEIGHT);
+ memset (bits, 0xff, WIDTH * HEIGHT * 4);
+
+ trap.top.l = pixman_int_to_fixed (50) + 0x8000;
+ trap.top.r = pixman_int_to_fixed (150) + 0x8000;
+ trap.top.y = pixman_int_to_fixed (30);
+
+ trap.bot.l = pixman_int_to_fixed (50) + 0x8000;
+ trap.bot.r = pixman_int_to_fixed (150) + 0x8000;
+ trap.bot.y = pixman_int_to_fixed (150);
+
+ mask_img = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, mbits, WIDTH);
+ src_img = pixman_image_create_solid_fill (&white);
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
+
+ pixman_add_traps (mask_img, 0, 0, 1, &trap);
+
+ pixman_image_composite (PIXMAN_OP_OVER,
+ src_img, mask_img, dest_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ show_image (dest_img);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (dest_img);
+ free (bits);
+
+ return 0;
+}
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