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