1 files changed, 184 insertions, 0 deletions
diff --git a/src/mesa/pipe/draw/draw_private.h b/src/mesa/pipe/draw/draw_private.h
new file mode 100644
index 0000000000..3dfaa0581d
--- /dev/null
+++ b/src/mesa/pipe/draw/draw_private.h
@@ -0,0 +1,184 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 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.
+ * 
+ **************************************************************************/
+
+/**
+ * Private data structures, etc for the draw module.
+ */
+
+
+/**
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * Brian Paul
+ */
+
+
+#ifndef DRAW_PRIVATE_H
+#define DRAW_PRIVATE_H
+
+
+#include "main/glheader.h"
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "vf/vf.h"
+
+
+/**
+ * Basic vertex info.
+ * Carry some useful information around with the vertices in the prim pipe.  
+ */
+struct vertex_header {
+   GLuint clipmask:12;
+   GLuint edgeflag:1;
+   GLuint pad:19;
+
+   GLfloat clip[4];
+
+   GLfloat data[][4];		/* Note variable size */
+};
+
+
+/**
+ * Basic info for a point/line/triangle primitive.
+ */
+struct prim_header {
+   GLfloat det;                 /**< front/back face determinant */
+   struct vertex_header *v[3];  /**< 1 to 3 vertex pointers */
+};
+
+
+
+struct draw_context;
+
+/**
+ * Base class for all primitive drawing stages.
+ */
+struct draw_stage
+{
+   struct draw_context *draw;   /**< parent context */
+
+   struct draw_stage *next;     /**< next stage in pipeline */
+
+   struct vertex_header **tmp;
+   GLuint nr_tmps;
+
+   void (*begin)( struct draw_stage * );
+
+   void (*point)( struct draw_stage *,
+		  struct prim_header * );
+
+   void (*line)( struct draw_stage *,
+		 struct prim_header * );
+
+   void (*tri)( struct draw_stage *,
+		struct prim_header * );
+   
+   void (*end)( struct draw_stage * );
+
+   void (*reset_stipple_counter)( struct draw_stage * );
+};
+
+
+/**
+ * Private context for the drawing module.
+ */
+struct draw_context
+{
+   struct {
+      struct draw_stage *first;  /**< one of the following */
+
+      /* stages (in logical order) */
+      struct draw_stage *flatshade;
+      struct draw_stage *clip;
+      struct draw_stage *cull;
+      struct draw_stage *twoside;
+      struct draw_stage *offset;
+      struct draw_stage *unfilled;
+      struct draw_stage *setup;  /* aka render/rasterize */
+   } pipeline;
+
+   /* pipe state that we need: */
+   struct pipe_setup_state setup;
+   struct pipe_viewport_state viewport;
+
+   /* Clip derived state:
+    */
+   GLfloat plane[12][4];
+   GLuint nr_planes;
+
+   GLuint vf_attr_to_slot[PIPE_ATTRIB_MAX];
+
+   struct vf_attr_map attrs[VF_ATTRIB_MAX];
+   GLuint nr_attrs;
+   GLuint vertex_size;       /**< in bytes */
+   struct vertex_fetch *vf;
+
+   GLubyte *verts;
+   GLuint nr_vertices;
+   GLboolean in_vb;
+
+   GLenum prim;   /**< GL_POINTS, GL_LINE_STRIP, GL_QUADS, etc */
+
+   /* Helper for tnl:
+    */
+   GLvector4f header;   
+};
+
+
+
+extern struct draw_stage *draw_unfilled_stage( struct draw_context *context );
+extern struct draw_stage *draw_twoside_stage( struct draw_context *context );
+extern struct draw_stage *draw_offset_stage( struct draw_context *context );
+extern struct draw_stage *draw_clip_stage( struct draw_context *context );
+extern struct draw_stage *draw_flatshade_stage( struct draw_context *context );
+extern struct draw_stage *draw_cull_stage( struct draw_context *context );
+
+
+extern void draw_free_tmps( struct draw_stage *stage );
+extern void draw_alloc_tmps( struct draw_stage *stage, GLuint nr );
+
+
+
+/**
+ * Get a writeable copy of a vertex.
+ * \param stage  drawing stage info
+ * \param vert  the vertex to copy (source)
+ * \param idx  index into stage's tmp[] array to put the copy (dest)
+ * \return  pointer to the copied vertex
+ */
+static INLINE struct vertex_header *
+dup_vert( struct draw_stage *stage,
+	  const struct vertex_header *vert,
+	  GLuint idx )
+{   
+   struct vertex_header *tmp = stage->tmp[idx];
+   memcpy(tmp, vert, stage->draw->vertex_size );
+   return tmp;
+}
+
+
+#endif /* DRAW_PRIVATE_H */