1 files changed, 36 insertions, 15 deletions

diff --git a/pixman/demos/gtk-utils.c b/pixman/demos/gtk-utils.c
index 1ff89ebd3..8291a1ed2 100644
--- a/pixman/demos/gtk-utils.c
+++ b/pixman/demos/gtk-utils.c
@@ -5,7 +5,6 @@
 
 GdkPixbuf *
 pixbuf_from_argb32 (uint32_t *bits,
-		    gboolean has_alpha,
 		    int width,
 		    int height,
 		    int stride)
@@ -47,12 +46,12 @@ show_image (pixman_image_t *image)
 {
     GtkWidget *window;
     GdkPixbuf *pixbuf;
-    int width, height, stride;
+    int width, height;
     int argc;
     char **argv;
     char *arg0 = g_strdup ("pixman-test-program");
-    gboolean has_alpha;
     pixman_format_code_t format;
+    pixman_image_t *copy;
 
     argc = 1;
     argv = (char **)&arg0;
@@ -62,21 +61,43 @@ show_image (pixman_image_t *image)
     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 = pixman_image_get_format (image);
-    
-    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);
+
+    /* Three cases:
+     *
+     *  - image is a8r8g8b8_sRGB: we will display without modification
+     *    under the assumption that the monitor is sRGB
+     *
+     *  - image is a8r8g8b8: we will display without modification
+     *    under the assumption that whoever created the image
+     *    probably did it wrong by using sRGB inputs
+     *
+     *  - other: we will convert to a8r8g8b8 under the assumption that
+     *    whoever created the image probably did it wrong.
+     */
+    switch (format)
+    {
+    case PIXMAN_a8r8g8b8_sRGB:
+    case PIXMAN_a8r8g8b8:
+	copy = pixman_image_ref (image);
+	break;
+
+    default:
+	copy = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+					 width, height, NULL, -1);
+	pixman_image_composite32 (PIXMAN_OP_SRC,
+				  image, NULL, copy,
+				  0, 0, 0, 0, 0, 0,
+				  width, height);
+	break;
+    }
+
+    pixbuf = pixbuf_from_argb32 (pixman_image_get_data (copy),
+				 width, height,
+				 pixman_image_get_stride (copy));
     
     g_signal_connect (window, "expose_event", G_CALLBACK (on_expose), pixbuf);
     g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL);