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
29
30#include "svga_context.h"
31#include "svga_state.h"
32#include "svga_debug.h"
33#include "svga_hw_reg.h"
34
35/***********************************************************************
36 */
37
38
39/**
40 * Given a gallium vertex element format, return the corresponding SVGA3D
41 * format.  Return SVGA3D_DECLTYPE_MAX for unsupported gallium formats.
42 */
43static INLINE SVGA3dDeclType
44svga_translate_vertex_format(enum pipe_format format)
45{
46   switch (format) {
47   case PIPE_FORMAT_R32_FLOAT:            return SVGA3D_DECLTYPE_FLOAT1;
48   case PIPE_FORMAT_R32G32_FLOAT:         return SVGA3D_DECLTYPE_FLOAT2;
49   case PIPE_FORMAT_R32G32B32_FLOAT:      return SVGA3D_DECLTYPE_FLOAT3;
50   case PIPE_FORMAT_R32G32B32A32_FLOAT:   return SVGA3D_DECLTYPE_FLOAT4;
51   case PIPE_FORMAT_B8G8R8A8_UNORM:       return SVGA3D_DECLTYPE_D3DCOLOR;
52   case PIPE_FORMAT_R8G8B8A8_USCALED:     return SVGA3D_DECLTYPE_UBYTE4;
53   case PIPE_FORMAT_R16G16_SSCALED:       return SVGA3D_DECLTYPE_SHORT2;
54   case PIPE_FORMAT_R16G16B16A16_SSCALED: return SVGA3D_DECLTYPE_SHORT4;
55   case PIPE_FORMAT_R8G8B8A8_UNORM:       return SVGA3D_DECLTYPE_UBYTE4N;
56   case PIPE_FORMAT_R16G16_SNORM:         return SVGA3D_DECLTYPE_SHORT2N;
57   case PIPE_FORMAT_R16G16B16A16_SNORM:   return SVGA3D_DECLTYPE_SHORT4N;
58   case PIPE_FORMAT_R16G16_UNORM:         return SVGA3D_DECLTYPE_USHORT2N;
59   case PIPE_FORMAT_R16G16B16A16_UNORM:   return SVGA3D_DECLTYPE_USHORT4N;
60   case PIPE_FORMAT_R10G10B10X2_USCALED:  return SVGA3D_DECLTYPE_UDEC3;
61   case PIPE_FORMAT_R10G10B10X2_SNORM:    return SVGA3D_DECLTYPE_DEC3N;
62   case PIPE_FORMAT_R16G16_FLOAT:         return SVGA3D_DECLTYPE_FLOAT16_2;
63   case PIPE_FORMAT_R16G16B16A16_FLOAT:   return SVGA3D_DECLTYPE_FLOAT16_4;
64
65   default:
66      /* There are many formats without hardware support.  This case
67       * will be hit regularly, meaning we'll need swvfetch.
68       */
69      return SVGA3D_DECLTYPE_MAX;
70   }
71}
72
73
74static enum pipe_error
75update_need_swvfetch( struct svga_context *svga,
76                      unsigned dirty )
77{
78   unsigned i;
79   boolean need_swvfetch = FALSE;
80
81   if (!svga->curr.velems) {
82      /* No vertex elements bound. */
83      return 0;
84   }
85
86   for (i = 0; i < svga->curr.velems->count; i++) {
87      svga->state.sw.ve_format[i] = svga_translate_vertex_format(svga->curr.velems->velem[i].src_format);
88      if (svga->state.sw.ve_format[i] == SVGA3D_DECLTYPE_MAX) {
89         /* Unsupported format - use software fetch */
90         need_swvfetch = TRUE;
91         break;
92      }
93   }
94
95   if (need_swvfetch != svga->state.sw.need_swvfetch) {
96      svga->state.sw.need_swvfetch = need_swvfetch;
97      svga->dirty |= SVGA_NEW_NEED_SWVFETCH;
98   }
99
100   return PIPE_OK;
101}
102
103struct svga_tracked_state svga_update_need_swvfetch =
104{
105   "update need_swvfetch",
106   ( SVGA_NEW_VELEMENT ),
107   update_need_swvfetch
108};
109
110
111/***********************************************************************
112 */
113
114static enum pipe_error
115update_need_pipeline( struct svga_context *svga,
116                      unsigned dirty )
117{
118
119   boolean need_pipeline = FALSE;
120   struct svga_vertex_shader *vs = svga->curr.vs;
121
122   /* SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
123    */
124   if (svga->curr.rast->need_pipeline & (1 << svga->curr.reduced_prim)) {
125      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline (0x%x) & prim (0x%x)\n",
126                 __FUNCTION__,
127                 svga->curr.rast->need_pipeline,
128                 (1 << svga->curr.reduced_prim) );
129      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline tris (%s), lines (%s), points (%s)\n",
130                 __FUNCTION__,
131                 svga->curr.rast->need_pipeline_tris_str,
132                 svga->curr.rast->need_pipeline_lines_str,
133                 svga->curr.rast->need_pipeline_points_str);
134      need_pipeline = TRUE;
135   }
136
137   /* EDGEFLAGS
138    */
139    if (vs && vs->base.info.writes_edgeflag) {
140      SVGA_DBG(DEBUG_SWTNL, "%s: edgeflags\n", __FUNCTION__);
141      need_pipeline = TRUE;
142   }
143
144   /* SVGA_NEW_FS, SVGA_NEW_RAST, SVGA_NEW_REDUCED_PRIMITIVE
145    */
146   if (svga->curr.reduced_prim == PIPE_PRIM_POINTS) {
147      unsigned sprite_coord_gen = svga->curr.rast->templ.sprite_coord_enable;
148      unsigned generic_inputs =
149         svga->curr.fs ? svga->curr.fs->generic_inputs : 0;
150
151      if (sprite_coord_gen &&
152          (generic_inputs & ~sprite_coord_gen)) {
153         /* The fragment shader is using some generic inputs that are
154          * not being replaced by auto-generated point/sprite coords (and
155          * auto sprite coord generation is turned on).
156          * The SVGA3D interface does not support that: if we enable
157          * SVGA3D_RS_POINTSPRITEENABLE it gets enabled for _all_
158          * texture coordinate sets.
159          * To solve this, we have to use the draw-module's wide/sprite
160          * point stage.
161          */
162         need_pipeline = TRUE;
163      }
164   }
165
166   if (need_pipeline != svga->state.sw.need_pipeline) {
167      svga->state.sw.need_pipeline = need_pipeline;
168      svga->dirty |= SVGA_NEW_NEED_PIPELINE;
169   }
170
171   /* DEBUG */
172   if (0 && svga->state.sw.need_pipeline)
173      debug_printf("sw.need_pipeline = %d\n", svga->state.sw.need_pipeline);
174
175   return PIPE_OK;
176}
177
178
179struct svga_tracked_state svga_update_need_pipeline =
180{
181   "need pipeline",
182   (SVGA_NEW_RAST |
183    SVGA_NEW_FS |
184    SVGA_NEW_VS |
185    SVGA_NEW_REDUCED_PRIMITIVE),
186   update_need_pipeline
187};
188
189
190/***********************************************************************
191 */
192
193static enum pipe_error
194update_need_swtnl( struct svga_context *svga,
195                   unsigned dirty )
196{
197   boolean need_swtnl;
198
199   if (svga->debug.no_swtnl) {
200      svga->state.sw.need_swvfetch = FALSE;
201      svga->state.sw.need_pipeline = FALSE;
202   }
203
204   need_swtnl = (svga->state.sw.need_swvfetch ||
205                 svga->state.sw.need_pipeline);
206
207   if (svga->debug.force_swtnl) {
208      need_swtnl = TRUE;
209   }
210
211   /*
212    * Some state changes the draw module does makes us believe we
213    * we don't need swtnl. This causes the vdecl code to pickup
214    * the wrong buffers and vertex formats. Try trivial/line-wide.
215    */
216   if (svga->state.sw.in_swtnl_draw)
217      need_swtnl = TRUE;
218
219   if (need_swtnl != svga->state.sw.need_swtnl) {
220      SVGA_DBG(DEBUG_SWTNL|DEBUG_PERF,
221               "%s: need_swvfetch %s, need_pipeline %s\n",
222               __FUNCTION__,
223               svga->state.sw.need_swvfetch ? "true" : "false",
224               svga->state.sw.need_pipeline ? "true" : "false");
225
226      svga->state.sw.need_swtnl = need_swtnl;
227      svga->dirty |= SVGA_NEW_NEED_SWTNL;
228      svga->swtnl.new_vdecl = TRUE;
229   }
230
231   return PIPE_OK;
232}
233
234
235struct svga_tracked_state svga_update_need_swtnl =
236{
237   "need swtnl",
238   (SVGA_NEW_NEED_PIPELINE |
239    SVGA_NEW_NEED_SWVFETCH),
240   update_need_swtnl
241};
242