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