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 &&
70       (svga->curr.rast->need_pipeline & (1 << svga->curr.reduced_prim))) {
71      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline (0x%x) & prim (0x%x)\n",
72                 __FUNCTION__,
73                 svga->curr.rast->need_pipeline,
74                 (1 << svga->curr.reduced_prim) );
75      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline tris (%s), lines (%s), points (%s)\n",
76                 __FUNCTION__,
77                 svga->curr.rast->need_pipeline_tris_str,
78                 svga->curr.rast->need_pipeline_lines_str,
79                 svga->curr.rast->need_pipeline_points_str);
80      need_pipeline = TRUE;
81
82      switch (svga->curr.reduced_prim) {
83      case PIPE_PRIM_POINTS:
84         reason = svga->curr.rast->need_pipeline_points_str;
85         break;
86      case PIPE_PRIM_LINES:
87         reason = svga->curr.rast->need_pipeline_lines_str;
88         break;
89      case PIPE_PRIM_TRIANGLES:
90         reason = svga->curr.rast->need_pipeline_tris_str;
91         break;
92      default:
93         assert(!"Unexpected reduced prim type");
94      }
95   }
96
97   /* EDGEFLAGS
98    */
99    if (vs && vs->base.info.writes_edgeflag) {
100      SVGA_DBG(DEBUG_SWTNL, "%s: edgeflags\n", __FUNCTION__);
101      need_pipeline = TRUE;
102      reason = "edge flags";
103   }
104
105   /* SVGA_NEW_FS, SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
106    */
107   if (svga->curr.rast && svga->curr.reduced_prim == PIPE_PRIM_POINTS) {
108      unsigned sprite_coord_gen = svga->curr.rast->templ.sprite_coord_enable;
109      unsigned generic_inputs =
110         svga->curr.fs ? svga->curr.fs->generic_inputs : 0;
111
112      if (!svga_have_vgpu10(svga) && sprite_coord_gen &&
113          (generic_inputs & ~sprite_coord_gen)) {
114         /* The fragment shader is using some generic inputs that are
115          * not being replaced by auto-generated point/sprite coords (and
116          * auto sprite coord generation is turned on).
117          * The SVGA3D interface does not support that: if we enable
118          * SVGA3D_RS_POINTSPRITEENABLE it gets enabled for _all_
119          * texture coordinate sets.
120          * To solve this, we have to use the draw-module's wide/sprite
121          * point stage.
122          */
123         need_pipeline = TRUE;
124         reason = "point sprite coordinate generation";
125      }
126   }
127
128   if (need_pipeline != svga->state.sw.need_pipeline) {
129      svga->state.sw.need_pipeline = need_pipeline;
130      svga->dirty |= SVGA_NEW_NEED_PIPELINE;
131   }
132
133   /* DEBUG */
134   if (0 && svga->state.sw.need_pipeline)
135      debug_printf("sw.need_pipeline = %d\n", svga->state.sw.need_pipeline);
136
137   if (svga->state.sw.need_pipeline) {
138      assert(reason);
139      pipe_debug_message(&svga->debug.callback, FALLBACK,
140                         "Using semi-fallback for %s", reason);
141   }
142
143   return PIPE_OK;
144}
145
146
147struct svga_tracked_state svga_update_need_pipeline =
148{
149   "need pipeline",
150   (SVGA_NEW_RAST |
151    SVGA_NEW_FS |
152    SVGA_NEW_VS |
153    SVGA_NEW_REDUCED_PRIMITIVE),
154   update_need_pipeline
155};
156
157
158static enum pipe_error
159update_need_swtnl(struct svga_context *svga, unsigned dirty)
160{
161   boolean need_swtnl;
162
163   if (svga->debug.no_swtnl) {
164      svga->state.sw.need_swvfetch = FALSE;
165      svga->state.sw.need_pipeline = FALSE;
166   }
167
168   need_swtnl = (svga->state.sw.need_swvfetch ||
169                 svga->state.sw.need_pipeline);
170
171   if (svga->debug.force_swtnl) {
172      need_swtnl = TRUE;
173   }
174
175   /*
176    * Some state changes the draw module does makes us believe we
177    * we don't need swtnl. This causes the vdecl code to pickup
178    * the wrong buffers and vertex formats. Try trivial/line-wide.
179    */
180   if (svga->state.sw.in_swtnl_draw)
181      need_swtnl = TRUE;
182
183   if (need_swtnl != svga->state.sw.need_swtnl) {
184      SVGA_DBG(DEBUG_SWTNL|DEBUG_PERF,
185               "%s: need_swvfetch %s, need_pipeline %s\n",
186               __FUNCTION__,
187               svga->state.sw.need_swvfetch ? "true" : "false",
188               svga->state.sw.need_pipeline ? "true" : "false");
189
190      svga->state.sw.need_swtnl = need_swtnl;
191      svga->dirty |= SVGA_NEW_NEED_SWTNL;
192      svga->swtnl.new_vdecl = TRUE;
193   }
194
195   return PIPE_OK;
196}
197
198
199struct svga_tracked_state svga_update_need_swtnl =
200{
201   "need swtnl",
202   (SVGA_NEW_NEED_PIPELINE |
203    SVGA_NEW_NEED_SWVFETCH),
204   update_need_swtnl
205};
206