src/gallium/drivers/softpipe/sp_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 "sp_context.h"
  33 #include "sp_state.h"
  34
  35 #include "util/u_memory.h"
  36 #include "util/u_inlines.h"
  37 #include "util/u_transfer.h"
  38 #include "draw/draw_context.h"
  39
  40
  41 static void *
  42 softpipe_create_vertex_elements_state(struct pipe_context *pipe,
  43                                       unsigned count,
  44                                       const struct pipe_vertex_element *attribs)
  45 {
  46    struct sp_velems_state *velems;
  47    assert(count <= PIPE_MAX_ATTRIBS);
  48    velems = (struct sp_velems_state *) MALLOC(sizeof(struct sp_velems_state));
  49    if (velems) {
  50       velems->count = count;
  51       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
  52    }
  53    return velems;
  54 }
  55
  56
  57 static void
  58 softpipe_bind_vertex_elements_state(struct pipe_context *pipe,
  59                                     void *velems)
  60 {
  61    struct softpipe_context *softpipe = softpipe_context(pipe);
  62    struct sp_velems_state *sp_velems = (struct sp_velems_state *) velems;
  63
  64    softpipe->velems = sp_velems;
  65
  66    softpipe->dirty |= SP_NEW_VERTEX;
  67
  68    if (sp_velems)
  69       draw_set_vertex_elements(softpipe->draw, sp_velems->count, sp_velems->velem);
  70 }
  71
  72
  73 static void
  74 softpipe_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
  75 {
  76    FREE( velems );
  77 }
  78
  79
  80 static void
  81 softpipe_set_vertex_buffers(struct pipe_context *pipe,
  82                             unsigned count,
  83                             const struct pipe_vertex_buffer *buffers)
  84 {
  85    struct softpipe_context *softpipe = softpipe_context(pipe);
  86
  87    assert(count <= PIPE_MAX_ATTRIBS);
  88
  89    util_copy_vertex_buffers(softpipe->vertex_buffer,
  90                             &softpipe->num_vertex_buffers,
  91                             buffers, count);
  92
  93    softpipe->dirty |= SP_NEW_VERTEX;
  94
  95    draw_set_vertex_buffers(softpipe->draw, count, buffers);
  96 }
  97
  98
  99 static void
 100 softpipe_set_index_buffer(struct pipe_context *pipe,
 101                           const struct pipe_index_buffer *ib)
 102 {
 103    struct softpipe_context *softpipe = softpipe_context(pipe);
 104
 105    if (ib)
 106       memcpy(&softpipe->index_buffer, ib, sizeof(softpipe->index_buffer));
 107    else
 108       memset(&softpipe->index_buffer, 0, sizeof(softpipe->index_buffer));
 109
 110    draw_set_index_buffer(softpipe->draw, ib);
 111 }
 112
 113
 114 void
 115 softpipe_init_vertex_funcs(struct pipe_context *pipe)
 116 {
 117    pipe->create_vertex_elements_state = softpipe_create_vertex_elements_state;
 118    pipe->bind_vertex_elements_state = softpipe_bind_vertex_elements_state;
 119    pipe->delete_vertex_elements_state = softpipe_delete_vertex_elements_state;
 120
 121    pipe->set_vertex_buffers = softpipe_set_vertex_buffers;
 122    pipe->set_index_buffer = softpipe_set_index_buffer;
 123    pipe->redefine_user_buffer = u_default_redefine_user_buffer;
 124 }