1 files changed, 103 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_rect.h b/mesalib/src/gallium/auxiliary/util/u_rect.h
new file mode 100644
index 000000000..d16f106bf
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_rect.h
@@ -0,0 +1,103 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+
+#ifndef U_RECT_H
+#define U_RECT_H
+
+#include "pipe/p_compiler.h"
+
+struct u_rect {
+   int x0, x1;
+   int y0, y1;
+};
+
+/* Do two rectangles intersect?
+ */
+static INLINE boolean
+u_rect_test_intersection(const struct u_rect *a,
+                         const struct u_rect *b)
+{
+   return (!(a->x1 < b->x0 ||
+             b->x1 < a->x0 ||
+             a->y1 < b->y0 ||
+             b->y1 < a->y0));
+}
+
+/* Find the intersection of two rectangles known to intersect.
+ */
+static INLINE void
+u_rect_find_intersection(const struct u_rect *a,
+                         struct u_rect *b)
+{
+   /* Caller should verify intersection exists before calling.
+    */
+   if (b->x0 < a->x0) b->x0 = a->x0;
+   if (b->x1 > a->x1) b->x1 = a->x1;
+   if (b->y0 < a->y0) b->y0 = a->y0;
+   if (b->y1 > a->y1) b->y1 = a->y1;
+}
+
+
+static INLINE void
+u_rect_possible_intersection(const struct u_rect *a,
+                             struct u_rect *b)
+{
+   if (u_rect_test_intersection(a,b)) {
+      u_rect_find_intersection(a,b);
+   }
+   else {
+      b->x0 = b->x1 = b->y0 = b->y1 = 0;
+   }
+}
+
+#include "pipe/p_format.h"
+#include "util/u_pack_color.h"
+
+
+
+/**********************************************************************
+ * Pipe copy/fill rect helpers.
+ */
+
+/* These really should move to a different file:
+ */
+#include "pipe/p_format.h"
+
+extern void
+util_copy_rect(ubyte * dst, enum pipe_format format,
+               unsigned dst_stride, unsigned dst_x, unsigned dst_y,
+               unsigned width, unsigned height, const ubyte * src,
+               int src_stride, unsigned src_x, unsigned src_y);
+
+extern void
+util_fill_rect(ubyte * dst, enum pipe_format format,
+               unsigned dst_stride, unsigned dst_x, unsigned dst_y,
+               unsigned width, unsigned height, union util_color *uc);
+
+
+#endif /* U_RECT_H */