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 "util/u_inlines.h"
27#include "pipe/p_state.h"
28#include "svga_context.h"
29#include "svga_shader.h"
30#include "svga_state.h"
31#include "svga_debug.h"
32#include "svga_hw_reg.h"
33
34
35static enum pipe_error
36update_need_swvfetch(struct svga_context *svga, unsigned dirty)
37{
38   if (!svga->curr.velems) {
39      /* No vertex elements bound. */
40      return PIPE_OK;
41   }
42
43   if (svga->state.sw.need_swvfetch != svga->curr.velems->need_swvfetch) {
44      svga->state.sw.need_swvfetch = svga->curr.velems->need_swvfetch;
45      svga->dirty |= SVGA_NEW_NEED_SWVFETCH;
46   }
47
48   return PIPE_OK;
49}
50
51struct svga_tracked_state svga_update_need_swvfetch =
52{
53   "update need_swvfetch",
54   ( SVGA_NEW_VELEMENT ),
55   update_need_swvfetch
56};
57
58
59
60static enum pipe_error
61update_need_pipeline(struct svga_context *svga, unsigned dirty)
62{
63   boolean need_pipeline = FALSE;
64   struct svga_vertex_shader *vs = svga->curr.vs;
65   const char *reason = "";
66
67   /* SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
68    */
69   if (svga->curr.rast->need_pipeline & (1 << svga->curr.reduced_prim)) {
70      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline (0x%x) & prim (0x%x)\n",
71                 __FUNCTION__,
72                 svga->curr.rast->need_pipeline,
73                 (1 << svga->curr.reduced_prim) );
74      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline tris (%s), lines (%s), points (%s)\n",
75                 __FUNCTION__,
76                 svga->curr.rast->need_pipeline_tris_str,
77                 svga->curr.rast->need_pipeline_lines_str,
78                 svga->curr.rast->need_pipeline_points_str);
79      need_pipeline = TRUE;
80
81      switch (svga->curr.reduced_prim) {
82      case PIPE_PRIM_POINTS:
83         reason = svga->curr.rast->need_pipeline_points_str;
84         break;
85      case PIPE_PRIM_LINES:
86         reason = svga->curr.rast->need_pipeline_lines_str;
87         break;
88      case PIPE_PRIM_TRIANGLES:
89         reason = svga->curr.rast->need_pipeline_tris_str;
90         break;
91      default:
92         assert(!"Unexpected reduced prim type");
93      }
94   }
95
96   /* EDGEFLAGS
97    */
98    if (vs && vs->base.info.writes_edgeflag) {
99      SVGA_DBG(DEBUG_SWTNL, "%s: edgeflags\n", __FUNCTION__);
100      need_pipeline = TRUE;
101      reason = "edge flags";
102   }
103
104   /* SVGA_NEW_FS, SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
105    */
106   if (svga->curr.reduced_prim == PIPE_PRIM_POINTS) {
107      unsigned sprite_coord_gen = svga->curr.rast->templ.sprite_coord_enable;
108      unsigned generic_inputs =
109         svga->curr.fs ? svga->curr.fs->generic_inputs : 0;
110
111      if (!svga_have_vgpu10(svga) && sprite_coord_gen &&
112          (generic_inputs & ~sprite_coord_gen)) {
113         /* The fragment shader is using some generic inputs that are
114          * not being replaced by auto-generated point/sprite coords (and
115          * auto sprite coord generation is turned on).
116          * The SVGA3D interface does not support that: if we enable
117          * SVGA3D_RS_POINTSPRITEENABLE it gets enabled for _all_
118          * texture coordinate sets.
119          * To solve this, we have to use the draw-module's wide/sprite
120          * point stage.
121          */
122         need_pipeline = TRUE;
123         reason = "point sprite coordinate generation";
124      }
125   }
126
127   if (need_pipeline != svga->state.sw.need_pipeline) {
128      svga->state.sw.need_pipeline = need_pipeline;
129      svga->dirty |= SVGA_NEW_NEED_PIPELINE;
130   }
131
132   /* DEBUG */
133   if (0 && svga->state.sw.need_pipeline)
134      debug_printf("sw.need_pipeline = %d\n", svga->state.sw.need_pipeline);
135
136   if (svga->state.sw.need_pipeline) {
137      assert(reason);
138      pipe_debug_message(&svga->debug.callback, FALLBACK,
139                         "Using semi-fallback for %s", reason);
140   }
141
142   return PIPE_OK;
143}
144
145
146struct svga_tracked_state svga_update_need_pipeline =
147{
148   "need pipeline",
149   (SVGA_NEW_RAST |
150    SVGA_NEW_FS |
151    SVGA_NEW_VS |
152    SVGA_NEW_REDUCED_PRIMITIVE),
153   update_need_pipeline
154};
155
156
157static enum pipe_error
158update_need_swtnl(struct svga_context *svga, unsigned dirty)
159{
160   boolean need_swtnl;
161
162   if (svga->debug.no_swtnl) {
163      svga->state.sw.need_swvfetch = FALSE;
164      svga->state.sw.need_pipeline = FALSE;
165   }
166
167   need_swtnl = (svga->state.sw.need_swvfetch ||
168                 svga->state.sw.need_pipeline);
169
170   if (svga->debug.force_swtnl) {
171      need_swtnl = TRUE;
172   }
173
174   /*
175    * Some state changes the draw module does makes us believe we
176    * we don't need swtnl. This causes the vdecl code to pickup
177    * the wrong buffers and vertex formats. Try trivial/line-wide.
178    */
179   if (svga->state.sw.in_swtnl_draw)
180      need_swtnl = TRUE;
181
182   if (need_swtnl != svga->state.sw.need_swtnl) {
183      SVGA_DBG(DEBUG_SWTNL|DEBUG_PERF,
184               "%s: need_swvfetch %s, need_pipeline %s\n",
185               __FUNCTION__,
186               svga->state.sw.need_swvfetch ? "true" : "false",
187               svga->state.sw.need_pipeline ? "true" : "false");
188
189      svga->state.sw.need_swtnl = need_swtnl;
190      svga->dirty |= SVGA_NEW_NEED_SWTNL;
191      svga->swtnl.new_vdecl = TRUE;
192   }
193
194   return PIPE_OK;
195}
196
197
198struct svga_tracked_state svga_update_need_swtnl =
199{
200   "need swtnl",
201   (SVGA_NEW_NEED_PIPELINE |
202    SVGA_NEW_NEED_SWVFETCH),
203   update_need_swtnl
204};
205