OpenVG 1.0 State Tracker

Import of the OpenVG 1.0 state tracker for Gallium.

1 files changed, 89 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/vega/stroker.h b/src/gallium/state_trackers/vega/stroker.h
new file mode 100644
index 00000000000..36543cd9237
--- /dev/null
+++ b/src/gallium/state_trackers/vega/stroker.h
@@ -0,0 +1,89 @@
+/**************************************************************************
+ *
+ * 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 STROKER_H
+#define STROKER_H
+
+#include "VG/openvg.h"
+#include "api_consts.h"
+
+struct path;
+struct vg_state;
+struct array;
+
+struct stroker {
+   void (*begin)(struct stroker *stroker);
+   void (*process_subpath)(struct stroker *stroker);
+   void (*end)(struct stroker *stroker);
+
+   struct array *segments;
+   struct array *control_points;
+   struct path *path;
+
+   VGfloat back1_x, back1_y;
+   VGfloat back2_x, back2_y;
+
+   VGfloat     stroke_width;
+   VGfloat     miter_limit;
+   VGCapStyle  cap_style;
+   VGJoinStyle join_style;
+
+   VGPathCommand last_cmd;
+};
+
+struct dash_stroker {
+   struct stroker base;
+
+   struct stroker stroker;
+
+   VGfloat dash_pattern[VEGA_MAX_DASH_COUNT];
+   VGint dash_pattern_num;
+   VGfloat dash_phase;
+   VGboolean dash_phase_reset;
+};
+
+void stroker_init(struct stroker *stroker,
+                  struct vg_state *state);
+void dash_stroker_init(struct stroker *stroker,
+                       struct vg_state *state);
+void dash_stroker_cleanup(struct dash_stroker *stroker);
+void stroker_cleanup(struct stroker *stroker);
+
+void stroker_begin(struct stroker *stroker);
+void stroker_move_to(struct stroker *stroker, VGfloat x, VGfloat y);
+void stroker_line_to(struct stroker *stroker, VGfloat x, VGfloat y);
+void stroker_curve_to(struct stroker *stroker, VGfloat px1, VGfloat py1,
+                      VGfloat px2, VGfloat py2,
+                      VGfloat x, VGfloat y);
+void stroker_end(struct stroker *stroker);
+
+void stroker_emit_move_to(struct stroker *stroker, VGfloat x, VGfloat y);
+void stroker_emit_line_to(struct stroker *stroker, VGfloat x, VGfloat y);
+void stroker_emit_curve_to(struct stroker *stroker, VGfloat px1, VGfloat py1,
+                           VGfloat px2, VGfloat py2,
+                           VGfloat x, VGfloat y);
+
+#endif