src/gallium/drivers/softpipe/sp_state_so.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 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 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 #include "sp_context.h"
  29 #include "sp_state.h"
  30 #include "sp_texture.h"
  31
  32 #include "util/u_format.h"
  33 #include "util/u_memory.h"
  34 #include "draw/draw_context.h"
  35
  36
  37 static void *
  38 softpipe_create_stream_output_state(struct pipe_context *pipe,
  39                                     const struct pipe_stream_output_info *templ)
  40 {
  41    struct sp_so_state *so;
  42    so = (struct sp_so_state *) CALLOC_STRUCT(sp_so_state);
  43
  44    if (so) {
  45       so->base.num_outputs = templ->num_outputs;
  46       so->base.stride = templ->stride;
  47       memcpy(so->base.output, templ->output,
  48              templ->num_outputs * sizeof(templ->output[0]));
  49    }
  50    return so;
  51 }
  52
  53
  54 static void
  55 softpipe_bind_stream_output_state(struct pipe_context *pipe,
  56                                   void *so)
  57 {
  58    struct softpipe_context *softpipe = softpipe_context(pipe);
  59    struct sp_so_state *sp_so = (struct sp_so_state *) so;
  60
  61    softpipe->so = sp_so;
  62
  63    softpipe->dirty |= SP_NEW_SO;
  64
  65    if (sp_so)
  66       draw_set_so_state(softpipe->draw, &sp_so->base);
  67 }
  68
  69
  70 static void
  71 softpipe_delete_stream_output_state(struct pipe_context *pipe, void *so)
  72 {
  73    FREE( so );
  74 }
  75
  76
  77 static void
  78 softpipe_set_stream_output_buffers(struct pipe_context *pipe,
  79                                    struct pipe_resource **buffers,
  80                                    int *offsets,
  81                                    int num_buffers)
  82 {
  83    struct softpipe_context *softpipe = softpipe_context(pipe);
  84    int i;
  85    void *map_buffers[PIPE_MAX_SO_BUFFERS];
  86
  87    assert(num_buffers <= PIPE_MAX_SO_BUFFERS);
  88    if (num_buffers > PIPE_MAX_SO_BUFFERS)
  89       num_buffers = PIPE_MAX_SO_BUFFERS;
  90
  91    softpipe->dirty |= SP_NEW_SO_BUFFERS;
  92
  93    for (i = 0; i < num_buffers; ++i) {
  94       void *mapped;
  95       struct softpipe_resource *res = softpipe_resource(buffers[i]);
  96
  97       if (!res) {
  98          /* the whole call is invalid, bail out */
  99          softpipe->so_target.num_buffers = 0;
 100          draw_set_mapped_so_buffers(softpipe->draw, 0, 0);
 101          return;
 102       }
 103
 104       softpipe->so_target.buffer[i] = res;
 105       softpipe->so_target.offset[i] = offsets[i];
 106       softpipe->so_target.so_count[i] = 0;
 107
 108       mapped = res->data;
 109       if (offsets[i] >= 0)
 110          map_buffers[i] = ((char*)mapped) + offsets[i];
 111       else {
 112          /* this is a buffer append */
 113          assert(!"appending not implemented");
 114          map_buffers[i] = mapped;
 115       }
 116    }
 117    softpipe->so_target.num_buffers = num_buffers;
 118
 119    draw_set_mapped_so_buffers(softpipe->draw, map_buffers, num_buffers);
 120 }
 121
 122
 123
 124 void
 125 softpipe_init_streamout_funcs(struct pipe_context *pipe)
 126 {
 127 #if 0
 128    pipe->create_stream_output_state = softpipe_create_stream_output_state;
 129    pipe->bind_stream_output_state = softpipe_bind_stream_output_state;
 130    pipe->delete_stream_output_state = softpipe_delete_stream_output_state;
 131
 132    pipe->set_stream_output_buffers = softpipe_set_stream_output_buffers;
 133 #else
 134    (void) softpipe_create_stream_output_state;
 135    (void) softpipe_bind_stream_output_state;
 136    (void) softpipe_delete_stream_output_state;
 137    (void) softpipe_set_stream_output_buffers;
 138 #endif
 139 }
 140