src/gallium/drivers/llvmpipe/lp_state_vertex.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  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 <keithw@vmware.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 void
  97 llvmpipe_init_vertex_funcs(struct llvmpipe_context *llvmpipe)
  98 {
  99    llvmpipe->pipe.create_vertex_elements_state = llvmpipe_create_vertex_elements_state;
 100    llvmpipe->pipe.bind_vertex_elements_state = llvmpipe_bind_vertex_elements_state;
 101    llvmpipe->pipe.delete_vertex_elements_state = llvmpipe_delete_vertex_elements_state;
 102
 103    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 104 }