src/mesa/pipe/draw/draw_arrays.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Author:
  29  *    Brian Paul
  30  *    Keith Whitwell
  31  */
  32
  33
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_winsys.h"
  37 #include "pipe/p_util.h"
  38
  39 #include "pipe/draw/draw_private.h"
  40 #include "pipe/draw/draw_context.h"
  41 #include "pipe/draw/draw_prim.h"
  42
  43
  44 /**
  45  * Draw vertex arrays
  46  * This is the main entrypoint into the drawing module.
  47  * \param prim  one of PIPE_PRIM_x
  48  * \param start  index of first vertex to draw
  49  * \param count  number of vertices to draw
  50  */
  51 void
  52 draw_arrays(struct draw_context *draw, unsigned prim,
  53             unsigned start, unsigned count)
  54 {
  55    /* tell drawing pipeline we're beginning drawing */
  56    draw->pipeline.first->begin( draw->pipeline.first );
  57
  58    /* XXX: Shouldn't really be needed - cache should be invalidated
  59     * after setting new vertex buffers, vertex elements, but not
  60     * between draws.
  61     */
  62    draw_vertex_cache_invalidate( draw );
  63
  64    draw_set_prim( draw, prim );
  65
  66    /* drawing done here: */
  67    draw_prim(draw, start, count);
  68
  69    /* draw any left-over buffered prims */
  70    draw_flush(draw);
  71
  72    /* tell drawing pipeline we're done drawing */
  73    draw->pipeline.first->end( draw->pipeline.first );
  74 }
  75
  76