1 files changed, 109 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/path_utils.h b/src/gallium/state_trackers/vega/path_utils.h
new file mode 100644
index 0000000000..c2b3221dc5
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+++ b/src/gallium/state_trackers/vega/path_utils.h
@@ -0,0 +1,109 @@
+/**************************************************************************
+ *
+ * Copyright 2009 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.
+ *
+ **************************************************************************/
+
+#ifndef PATH_UTILS_H
+#define PATH_UTILS_H
+
+#include "VG/openvg.h"
+
+#define SEGMENT_COMMAND(command) /* Extract segment type */     \
+    ((command) & 0x1e)
+#define SEGMENT_ABS_REL(command) /* Extract absolute/relative bit */ \
+    ((command) & 0x1)
+
+static INLINE VGint size_for_datatype(VGPathDatatype datatype)
+{
+   switch(datatype) {
+   case VG_PATH_DATATYPE_S_8:
+      return 1;
+   case VG_PATH_DATATYPE_S_16:
+      return 2;
+   case VG_PATH_DATATYPE_S_32:
+      return 4;
+   case VG_PATH_DATATYPE_F:
+      return 4;
+   default:
+      assert(!"unknown datatype");
+   }
+   return 0;
+}
+
+static INLINE VGint num_elements_for_segments(const VGubyte *segments,
+                                              VGint num_segments)
+{
+   VGint i;
+   VGint count = 0;
+
+   for (i = 0; i < num_segments; ++i) {
+      VGubyte segment = segments[i];
+      VGint command = SEGMENT_COMMAND(segment);
+      switch(command) {
+      case VG_CLOSE_PATH:
+         break;
+      case VG_MOVE_TO:
+         count += 2;
+         break;
+      case VG_LINE_TO:
+         count += 2;
+         break;
+      case VG_HLINE_TO:
+         count += 1;
+         break;
+      case VG_VLINE_TO:
+         count += 1;
+         break;
+      case VG_QUAD_TO:
+         count += 4;
+         break;
+      case VG_CUBIC_TO:
+         count += 6;
+         break;
+      case VG_SQUAD_TO:
+         count += 2;
+         break;
+      case VG_SCUBIC_TO:
+         count += 4;
+         break;
+      case VG_SCCWARC_TO:
+         count += 5;
+         break;
+      case VG_SCWARC_TO:
+         count += 5;
+         break;
+      case VG_LCCWARC_TO:
+         count += 5;
+         break;
+      case VG_LCWARC_TO:
+         count += 5;
+         break;
+      default:
+         assert(!"Unknown segment!");
+      }
+   }
+   return count;
+}
+
+#endif