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