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_screen.h"
33 #include "svga_swtnl.h"
34 #include "svga_state.h"
35 #include "svga_swtnl_private.h"
36
37
38
39 enum pipe_error
svga_swtnl_draw_vbo(struct svga_context * svga,const struct pipe_draw_info * info)40 svga_swtnl_draw_vbo(struct svga_context *svga,
41 const struct pipe_draw_info *info)
42 {
43 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = { 0 };
44 struct pipe_transfer *ib_transfer = NULL;
45 struct pipe_transfer *cb_transfer[SVGA_MAX_CONST_BUFS] = { 0 };
46 struct draw_context *draw = svga->swtnl.draw;
47 MAYBE_UNUSED unsigned old_num_vertex_buffers;
48 unsigned i;
49 const void *map;
50 enum pipe_error ret;
51
52 SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SWTNLDRAWVBO);
53
54 assert(!svga->dirty);
55 assert(svga->state.sw.need_swtnl);
56 assert(draw);
57
58 /* Make sure that the need_swtnl flag does not go away */
59 svga->state.sw.in_swtnl_draw = TRUE;
60
61 ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
62 if (ret != PIPE_OK) {
63 svga_context_flush(svga, NULL);
64 ret = svga_update_state(svga, SVGA_STATE_SWTNL_DRAW);
65 svga->swtnl.new_vbuf = TRUE;
66 assert(ret == PIPE_OK);
67 }
68
69 /*
70 * Map vertex buffers
71 */
72 for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
73 if (svga->curr.vb[i].buffer) {
74 map = pipe_buffer_map(&svga->pipe,
75 svga->curr.vb[i].buffer,
76 PIPE_TRANSFER_READ,
77 &vb_transfer[i]);
78
79 draw_set_mapped_vertex_buffer(draw, i, map, ~0);
80 }
81 }
82 old_num_vertex_buffers = svga->curr.num_vertex_buffers;
83
84 /* Map index buffer, if present */
85 map = NULL;
86 if (info->indexed && svga->curr.ib.buffer) {
87 map = pipe_buffer_map(&svga->pipe, svga->curr.ib.buffer,
88 PIPE_TRANSFER_READ,
89 &ib_transfer);
90 draw_set_indexes(draw,
91 (const ubyte *) map + svga->curr.ib.offset,
92 svga->curr.ib.index_size, ~0);
93 }
94
95 /* Map constant buffers */
96 for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
97 if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer == NULL) {
98 continue;
99 }
100
101 map = pipe_buffer_map(&svga->pipe,
102 svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer,
103 PIPE_TRANSFER_READ,
104 &cb_transfer[i]);
105 assert(map);
106 draw_set_mapped_constant_buffer(
107 draw, PIPE_SHADER_VERTEX, i,
108 map,
109 svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer->width0);
110 }
111
112 draw_vbo(draw, info);
113
114 draw_flush(svga->swtnl.draw);
115
116 /* Ensure the draw module didn't touch this */
117 assert(old_num_vertex_buffers == svga->curr.num_vertex_buffers);
118
119 /*
120 * unmap vertex/index buffers
121 */
122 for (i = 0; i < svga->curr.num_vertex_buffers; i++) {
123 if (svga->curr.vb[i].buffer) {
124 pipe_buffer_unmap(&svga->pipe, vb_transfer[i]);
125 draw_set_mapped_vertex_buffer(draw, i, NULL, 0);
126 }
127 }
128
129 if (ib_transfer) {
130 pipe_buffer_unmap(&svga->pipe, ib_transfer);
131 draw_set_indexes(draw, NULL, 0, 0);
132 }
133
134 for (i = 0; i < ARRAY_SIZE(svga->curr.constbufs[PIPE_SHADER_VERTEX]); ++i) {
135 if (svga->curr.constbufs[PIPE_SHADER_VERTEX][i].buffer) {
136 pipe_buffer_unmap(&svga->pipe, cb_transfer[i]);
137 }
138 }
139
140 /* Now safe to remove the need_swtnl flag in any update_state call */
141 svga->state.sw.in_swtnl_draw = FALSE;
142 svga->dirty |= SVGA_NEW_NEED_PIPELINE | SVGA_NEW_NEED_SWVFETCH;
143
144 SVGA_STATS_TIME_POP(svga_sws(svga));
145 return ret;
146 }
147
148
149
150
svga_init_swtnl(struct svga_context * svga)151 boolean svga_init_swtnl( struct svga_context *svga )
152 {
153 struct svga_screen *screen = svga_screen(svga->pipe.screen);
154
155 svga->swtnl.backend = svga_vbuf_render_create(svga);
156 if(!svga->swtnl.backend)
157 goto fail;
158
159 /*
160 * Create drawing context and plug our rendering stage into it.
161 */
162 svga->swtnl.draw = draw_create(&svga->pipe);
163 if (svga->swtnl.draw == NULL)
164 goto fail;
165
166
167 draw_set_rasterize_stage(svga->swtnl.draw,
168 draw_vbuf_stage( svga->swtnl.draw, svga->swtnl.backend ));
169
170 draw_set_render(svga->swtnl.draw, svga->swtnl.backend);
171
172 svga->blitter = util_blitter_create(&svga->pipe);
173 if (!svga->blitter)
174 goto fail;
175
176 /* must be done before installing Draw stages */
177 util_blitter_cache_all_shaders(svga->blitter);
178
179 if (!screen->haveLineSmooth)
180 draw_install_aaline_stage(svga->swtnl.draw, &svga->pipe);
181
182 /* enable/disable line stipple stage depending on device caps */
183 draw_enable_line_stipple(svga->swtnl.draw, !screen->haveLineStipple);
184
185 /* always install AA point stage */
186 draw_install_aapoint_stage(svga->swtnl.draw, &svga->pipe);
187
188 /* Set wide line threshold above device limit (so we'll never really use it)
189 */
190 draw_wide_line_threshold(svga->swtnl.draw,
191 MAX2(screen->maxLineWidth,
192 screen->maxLineWidthAA));
193
194 if (debug_get_bool_option("SVGA_SWTNL_FSE", FALSE))
195 draw_set_driver_clipping(svga->swtnl.draw, TRUE, TRUE, TRUE, FALSE);
196
197 return TRUE;
198
199 fail:
200 if (svga->blitter)
201 util_blitter_destroy(svga->blitter);
202
203 if (svga->swtnl.backend)
204 svga->swtnl.backend->destroy( svga->swtnl.backend );
205
206 if (svga->swtnl.draw)
207 draw_destroy( svga->swtnl.draw );
208
209 return FALSE;
210 }
211
212
svga_destroy_swtnl(struct svga_context * svga)213 void svga_destroy_swtnl( struct svga_context *svga )
214 {
215 draw_destroy( svga->swtnl.draw );
216 }
217