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