From 204271fafd46b76d35ba6f85a52df211f2ece1da Mon Sep 17 00:00:00 2001
From: Christian Hergert <chergert@redhat.com>
Date: Fri, 10 Feb 2023 17:32:09 -0800
Subject: [PATCH] lib: add pixman format conversion to cairo format

---
 lib/mks-paintable.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/lib/mks-paintable.c b/lib/mks-paintable.c
index 5bf2637..42a1d68 100644
--- a/lib/mks-paintable.c
+++ b/lib/mks-paintable.c
@@ -25,6 +25,7 @@
 #include <sys/socket.h>
 
 #include <glib/gstdio.h>
+#include <pixman.h>
 
 #include "mks-paintable-private.h"
 #include "mks-qemu.h"
@@ -40,6 +41,32 @@ struct _MksPaintable
   GDBusConnection *connection;
 };
 
+static cairo_format_t
+_pixman_format_to_cairo_format (guint pixman_format)
+{
+  switch (pixman_format)
+    {
+    case PIXMAN_rgba_float:
+      return CAIRO_FORMAT_RGBA128F;
+    case PIXMAN_rgb_float:
+      return CAIRO_FORMAT_RGB96F;
+    case PIXMAN_a8r8g8b8:
+      return CAIRO_FORMAT_ARGB32;
+    case PIXMAN_x2r10g10b10:
+      return CAIRO_FORMAT_RGB30;
+    case PIXMAN_x8r8g8b8:
+      return CAIRO_FORMAT_RGB24;
+    case PIXMAN_a8:
+      return CAIRO_FORMAT_A8;
+    case PIXMAN_a1:
+      return CAIRO_FORMAT_A1;
+    case PIXMAN_r5g6b5:
+      return CAIRO_FORMAT_RGB16_565;
+    default:
+      return 0;
+  }
+}
+
 static int
 mks_paintable_get_intrinsic_height (GdkPaintable *paintable)
 {