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      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 (at) 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 
    111 
    112 void
    113 softpipe_init_vertex_funcs(struct pipe_context *pipe)
    114 {
    115    pipe->create_vertex_elements_state = softpipe_create_vertex_elements_state;
    116    pipe->bind_vertex_elements_state = softpipe_bind_vertex_elements_state;
    117    pipe->delete_vertex_elements_state = softpipe_delete_vertex_elements_state;
    118 
    119    pipe->set_vertex_buffers = softpipe_set_vertex_buffers;
    120    pipe->set_index_buffer = softpipe_set_index_buffer;
    121 }
    122