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 
35 static enum pipe_error
update_need_swvfetch(struct svga_context * svga,uint64_t dirty)36 update_need_swvfetch(struct svga_context *svga, uint64_t 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 
51 struct svga_tracked_state svga_update_need_swvfetch =
52 {
53    "update need_swvfetch",
54    ( SVGA_NEW_VELEMENT ),
55    update_need_swvfetch
56 };
57 
58 
59 
60 static enum pipe_error
update_need_pipeline(struct svga_context * svga,uint64_t dirty)61 update_need_pipeline(struct svga_context *svga, uint64_t 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 
147 struct 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 
158 static enum pipe_error
update_need_swtnl(struct svga_context * svga,uint64_t dirty)159 update_need_swtnl(struct svga_context *svga, uint64_t 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 
199 struct 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