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      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
     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 <keithw (at) 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 static void
    101 softpipe_set_index_buffer(struct pipe_context *pipe,
    102                           const struct pipe_index_buffer *ib)
    103 {
    104    struct softpipe_context *softpipe = softpipe_context(pipe);
    105 
    106    if (ib)
    107       memcpy(&softpipe->index_buffer, ib, sizeof(softpipe->index_buffer));
    108    else
    109       memset(&softpipe->index_buffer, 0, sizeof(softpipe->index_buffer));
    110 }
    111 
    112 
    113 void
    114 softpipe_init_vertex_funcs(struct pipe_context *pipe)
    115 {
    116    pipe->create_vertex_elements_state = softpipe_create_vertex_elements_state;
    117    pipe->bind_vertex_elements_state = softpipe_bind_vertex_elements_state;
    118    pipe->delete_vertex_elements_state = softpipe_delete_vertex_elements_state;
    119 
    120    pipe->set_vertex_buffers = softpipe_set_vertex_buffers;
    121    pipe->set_index_buffer = softpipe_set_index_buffer;
    122 }
    123