vega: replace casts with pointer/handle conversion functions

Per the spec, all OpenVG handles are 32-bit.  We can't just cast them
to/from integers on 64-bit systems.

Start fixing that mess by introducing a set of handle/pointer conversion
functions in handle.h.  The next step is to implement a handle/pointer
hash table...

1 files changed, 130 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/vega/handle.h b/src/gallium/state_trackers/vega/handle.h
new file mode 100644
index 00000000000..7023004f4fe
--- /dev/null
+++ b/src/gallium/state_trackers/vega/handle.h
@@ -0,0 +1,130 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/**
+ * Convert opaque VG object handles into pointers and vice versa.
+ * XXX This is not yet 64-bit safe!  All VG handles are 32 bits in size.
+ */
+
+
+#ifndef HANDLE_H
+#define HANDLE_H
+
+#include "VG/openvg.h"
+#include "pipe/p_compiler.h"
+
+
+struct vg_mask_layer;
+struct vg_font;
+struct vg_image;
+struct vg_paint;
+struct path;
+
+
+static INLINE VGHandle
+image_to_handle(struct vg_image *img)
+{
+   return (VGHandle) img;
+}
+
+
+static INLINE VGHandle
+masklayer_to_handle(struct vg_mask_layer *mask)
+{
+   return (VGHandle) mask;
+}
+
+
+static INLINE VGHandle
+font_to_handle(struct vg_font *font)
+{
+   return (VGHandle) font;
+}
+
+static INLINE VGHandle
+paint_to_handle(struct vg_paint *paint)
+{
+   return (VGHandle) paint;
+}
+
+static INLINE VGHandle
+path_to_handle(struct path *path)
+{
+   return (VGHandle) path;
+}
+
+
+static INLINE void *
+handle_to_pointer(VGHandle h)
+{
+   return (void *) h;
+}
+
+
+static INLINE struct vg_font *
+handle_to_font(VGHandle h)
+{
+   return (struct vg_font *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_image *
+handle_to_image(VGHandle h)
+{
+   return (struct vg_image *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_mask_layer *
+handle_to_masklayer(VGHandle h)
+{
+   return (struct vg_mask_layer *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_object *
+handle_to_object(VGHandle h)
+{
+   return (struct vg_object *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_paint *
+handle_to_paint(VGHandle h)
+{
+   return (struct vg_paint *) handle_to_pointer(h);
+}
+
+
+static INLINE struct path *
+handle_to_path(VGHandle h)
+{
+   return (struct path *) handle_to_pointer(h);
+}
+
+
+#endif /* HANDLE_H */