src/gallium/drivers/llvmpipe/lp_state_vertex.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 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30
  31
  32 #include "lp_context.h"
  33 #include "lp_state.h"
  34
  35 #include "draw/draw_context.h"
  36 #include "util/u_inlines.h"
  37
  38
  39 static void *
  40 llvmpipe_create_vertex_elements_state(struct pipe_context *pipe,
  41                                       unsigned count,
  42                                       const struct pipe_vertex_element *attribs)
  43 {
  44    struct lp_velems_state *velems;
  45    assert(count <= PIPE_MAX_ATTRIBS);
  46    velems = (struct lp_velems_state *) MALLOC(sizeof(struct lp_velems_state));
  47    if (velems) {
  48       velems->count = count;
  49       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
  50    }
  51    return velems;
  52 }
  53
  54 static void
  55 llvmpipe_bind_vertex_elements_state(struct pipe_context *pipe,
  56                                     void *velems)
  57 {
  58    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  59    struct lp_velems_state *lp_velems = (struct lp_velems_state *) velems;
  60
  61    llvmpipe->velems = lp_velems;
  62
  63    llvmpipe->dirty |= LP_NEW_VERTEX;
  64
  65    if (velems)
  66       draw_set_vertex_elements(llvmpipe->draw, lp_velems->count, lp_velems->velem);
  67 }
  68
  69 static void
  70 llvmpipe_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
  71 {
  72    FREE( velems );
  73 }
  74
  75 static void
  76 llvmpipe_set_vertex_buffers(struct pipe_context *pipe,
  77                             unsigned count,
  78                             const struct pipe_vertex_buffer *buffers)
  79 {
  80    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  81
  82    assert(count <= PIPE_MAX_ATTRIBS);
  83
  84    util_copy_vertex_buffers(llvmpipe->vertex_buffer,
  85                             &llvmpipe->num_vertex_buffers,
  86                             buffers, count);
  87
  88    llvmpipe->dirty |= LP_NEW_VERTEX;
  89
  90    draw_set_vertex_buffers(llvmpipe->draw, count, buffers);
  91 }
  92
  93
  94 static void
  95 llvmpipe_set_index_buffer(struct pipe_context *pipe,
  96                           const struct pipe_index_buffer *ib)
  97 {
  98    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  99
 100    if (ib)
 101       memcpy(&llvmpipe->index_buffer, ib, sizeof(llvmpipe->index_buffer));
 102    else
 103       memset(&llvmpipe->index_buffer, 0, sizeof(llvmpipe->index_buffer));
 104
 105    draw_set_index_buffer(llvmpipe->draw, ib);
 106 }
 107
 108 void
 109 llvmpipe_init_vertex_funcs(struct llvmpipe_context *llvmpipe)
 110 {
 111    llvmpipe->pipe.create_vertex_elements_state = llvmpipe_create_vertex_elements_state;
 112    llvmpipe->pipe.bind_vertex_elements_state = llvmpipe_bind_vertex_elements_state;
 113    llvmpipe->pipe.delete_vertex_elements_state = llvmpipe_delete_vertex_elements_state;
 114
 115    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 116    llvmpipe->pipe.set_index_buffer = llvmpipe_set_index_buffer;
 117 }