1/**********************************************************
2 * Copyright 2008-2009 VMware, Inc.  All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26#include "draw/draw_context.h"
27#include "draw/draw_vbuf.h"
28#include "util/u_inlines.h"
29#include "pipe/p_state.h"
30
31#include "svga_context.h"
32#include "svga_swtnl.h"
33#include "svga_state.h"
34#include "svga_swtnl_private.h"
35
36
37
38enum pipe_error
39svga_swtnl_draw_vbo(struct svga_context *svga,
40                    const struct pipe_draw_info *info)
41{
42   struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
43   struct pipe_transfer *ib_transfer = NULL;
44   struct pipe_transfer *cb_transfer = NULL;
45   struct draw_context *draw = svga->swtnl.draw;
46   unsigned i;
47   const void *map;
48   enum pipe_error ret;
49
50   assert(!svga->dirty);
51   assert(svga->state.sw.need_swtnl);
52   assert(draw);
53
54   /* Make sure that the need_swtnl flag does not go away */
55   svga->state.sw.in_swtnl_draw = TRUE;
56
57   ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
58   if (ret != PIPE_OK) {
59      svga_context_flush(svga, NULL);
60      ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
61      svga->swtnl.new_vbuf = TRUE;
62      assert(ret == PIPE_OK);
63   }
64
65   /*
66    * Map vertex buffers
67    */
68   for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
69      if (svga->curr.vb[i].buffer) {
70         map = pipe_buffer_map(&svga->pipe,
71                               svga->curr.vb[i].buffer,
72                               PIPE_TRANSFER_READ,
73                               &vb_transfer[i]);
74
75         draw_set_mapped_vertex_buffer(draw, i, map);
76      }
77   }
78
79   /* Map index buffer, if present */
80   map = NULL;
81   if (info->indexed && svga->curr.ib.buffer) {
82      map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
83                            PIPE_TRANSFER_READ,
84                            &ib_transfer);
85      draw_set_indexes(draw,
86                       (const ubyte *) map + svga->curr.ib.offset,
87                       svga->curr.ib.index_size);
88   }
89
90   if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
91      map = pipe_buffer_map(&svga->pipe,
92                            svga->curr.cb[PIPE_SHADER_VERTEX],
93                            PIPE_TRANSFER_READ,
94			    &cb_transfer);
95      assert(map);
96      draw_set_mapped_constant_buffer(
97         draw, PIPE_SHADER_VERTEX, 0,
98         map,
99         svga->curr.cb[PIPE_SHADER_VERTEX]->width0);
100   }
101
102   draw_vbo(draw, info);
103
104   draw_flush(svga->swtnl.draw);
105
106   /* Ensure the draw module didn't touch this */
107   assert(i == svga->curr.num_vertex_buffers);
108
109   /*
110    * unmap vertex/index buffers
111    */
112   for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
113      if (svga->curr.vb[i].buffer) {
114         pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
115         draw_set_mapped_vertex_buffer(draw, i, NULL);
116      }
117   }
118
119   if (ib_transfer) {
120      pipe_buffer_unmap(&svga->pipe, ib_transfer);
121      draw_set_indexes(draw, NULL, 0);
122   }
123
124   if (svga->curr.cb[PIPE_SHADER_VERTEX]) {
125      pipe_buffer_unmap(&svga->pipe, cb_transfer);
126   }
127
128   /* Now safe to remove the need_swtnl flag in any update_state call */
129   svga->state.sw.in_swtnl_draw = FALSE;
130   svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
131
132   return ret;
133}
134
135
136
137
138boolean svga_init_swtnl( struct svga_context *svga )
139{
140   svga->swtnl.backend = svga_vbuf_render_create(svga);
141   if(!svga->swtnl.backend)
142      goto fail;
143
144   /*
145    * Create drawing context and plug our rendering stage into it.
146    */
147   svga->swtnl.draw = draw_create(&svga->pipe);
148   if (svga->swtnl.draw == NULL)
149      goto fail;
150
151
152   draw_set_rasterize_stage(svga->swtnl.draw,
153                            draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
154
155   draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
156
157   draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
158   draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
159   draw_install_pstipple_stage(svga->swtnl.draw, &svga->pipe);
160
161   if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
162      draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE);
163
164   return TRUE;
165
166fail:
167   if (svga->swtnl.backend)
168      svga->swtnl.backend->destroy( svga->swtnl.backend );
169
170   if (svga->swtnl.draw)
171      draw_destroy( svga->swtnl.draw );
172
173   return FALSE;
174}
175
176
177void svga_destroy_swtnl( struct svga_context *svga )
178{
179   draw_destroy( svga->swtnl.draw );
180}
181