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  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_helpers.h"
  37. #include "util/u_inlines.h"
  38. #include "util/u_transfer.h"
  39.  
  40.  
  41. static void *
  42. llvmpipe_create_vertex_elements_state(struct pipe_context *pipe,
  43.                                       unsigned count,
  44.                                       const struct pipe_vertex_element *attribs)
  45. {
  46.    struct lp_velems_state *velems;
  47.    assert(count <= PIPE_MAX_ATTRIBS);
  48.    velems = (struct lp_velems_state *) MALLOC(sizeof(struct lp_velems_state));
  49.    if (velems) {
  50.       velems->count = count;
  51.       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
  52.    }
  53.    return velems;
  54. }
  55.  
  56. static void
  57. llvmpipe_bind_vertex_elements_state(struct pipe_context *pipe,
  58.                                     void *velems)
  59. {
  60.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  61.    struct lp_velems_state *lp_velems = (struct lp_velems_state *) velems;
  62.  
  63.    llvmpipe->velems = lp_velems;
  64.  
  65.    llvmpipe->dirty |= LP_NEW_VERTEX;
  66.  
  67.    if (velems)
  68.       draw_set_vertex_elements(llvmpipe->draw, lp_velems->count, lp_velems->velem);
  69. }
  70.  
  71. static void
  72. llvmpipe_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
  73. {
  74.    FREE( velems );
  75. }
  76.  
  77. static void
  78. llvmpipe_set_vertex_buffers(struct pipe_context *pipe,
  79.                             unsigned start_slot, unsigned count,
  80.                             const struct pipe_vertex_buffer *buffers)
  81. {
  82.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  83.  
  84.    assert(count <= PIPE_MAX_ATTRIBS);
  85.  
  86.    util_set_vertex_buffers_count(llvmpipe->vertex_buffer,
  87.                                  &llvmpipe->num_vertex_buffers,
  88.                                  buffers, start_slot, count);
  89.  
  90.    llvmpipe->dirty |= LP_NEW_VERTEX;
  91.  
  92.    draw_set_vertex_buffers(llvmpipe->draw, start_slot, count, buffers);
  93. }
  94.  
  95.  
  96. static void
  97. llvmpipe_set_index_buffer(struct pipe_context *pipe,
  98.                           const struct pipe_index_buffer *ib)
  99. {
  100.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  101.  
  102.    if (ib)
  103.       memcpy(&llvmpipe->index_buffer, ib, sizeof(llvmpipe->index_buffer));
  104.    else
  105.       memset(&llvmpipe->index_buffer, 0, sizeof(llvmpipe->index_buffer));
  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. }
  118.