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| author | marha <marha@users.sourceforge.net> | 2011-04-30 16:21:56 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-04-30 16:21:56 +0000 |
| commit | e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f (patch) | |
| tree | 1804d7456ba8f200c7e329d4e6aa67ce4fb1649f /mesalib/src/gallium/auxiliary/util/u_rect.h | |
| parent | 88a78ebea08af461224f815a8380ea5c54186f43 (diff) | |
| parent | 0402d388cb9803652c0f9a52ba7dcb6029fdd0b9 (diff) | |
| download | vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.tar.gz vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.tar.bz2 vcxsrv-e4dd9264ee8d4a20eef0eec8c8bf8cff2473b46f.zip | |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_rect.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_rect.h | 103 |
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 */
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