summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/svga/svga_state_constants.c
blob: daf1024fd020214a2da52fec34b3ca994a3ec820 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/**********************************************************
 * Copyright 2008-2009 VMware, Inc.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 **********************************************************/

#include "util/u_inlines.h"
#include "pipe/p_defines.h"

#include "svga_context.h"
#include "svga_state.h"
#include "svga_cmd.h"
#include "svga_tgsi.h"
#include "svga_debug.h"

#include "svga_hw_reg.h"

/***********************************************************************
 * Hardware update 
 */

/* Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_*
 */
static int svga_shader_type( int unit )
{
   return unit + 1;
}


static int emit_const( struct svga_context *svga,
                       int unit,
                       int i,
                       const float *value )
{
   int ret = PIPE_OK;

   if (memcmp(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float)) != 0) {
      if (SVGA_DEBUG & DEBUG_CONSTS)
         debug_printf("%s %s %d: %f %f %f %f\n",
                      __FUNCTION__,
                      unit == PIPE_SHADER_VERTEX ? "VERT" : "FRAG",
                      i,
                      value[0],
                      value[1],
                      value[2],
                      value[3]);

      ret = SVGA3D_SetShaderConst( svga->swc, 
                                   i,
                                   svga_shader_type(unit),
                                   SVGA3D_CONST_TYPE_FLOAT,
                                   value );
      if (ret)
         return ret;

      memcpy(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float));
   }
   
   return ret;
}

static int emit_consts( struct svga_context *svga,
                        int offset,
                        int unit )
{
   struct pipe_transfer *transfer = NULL;
   unsigned count;
   const float (*data)[4] = NULL;
   unsigned i;
   int ret = PIPE_OK;

   if (svga->curr.cb[unit] == NULL)
      goto done;

   count = svga->curr.cb[unit]->width0 / (4 * sizeof(float));

   data = (const float (*)[4])pipe_buffer_map(&svga->pipe,
                                              svga->curr.cb[unit],
                                              PIPE_TRANSFER_READ,
					      &transfer);
   if (data == NULL) {
      ret = PIPE_ERROR_OUT_OF_MEMORY;
      goto done;
   }

   for (i = 0; i < count; i++) {
      ret = emit_const( svga, unit, offset + i, data[i] );
      if (ret)
         goto done;
   }

done:
   if (data)
      pipe_buffer_unmap(&svga->pipe, transfer);

   return ret;
}
   
static int emit_fs_consts( struct svga_context *svga,
                           unsigned dirty )
{
   const struct svga_shader_result *result = svga->state.hw_draw.fs;
   const struct svga_fs_compile_key *key = &result->key.fkey;
   int ret = 0;

   ret = emit_consts( svga, 0, PIPE_SHADER_FRAGMENT );
   if (ret)
      return ret;

   /* The internally generated fragment shader for xor blending
    * doesn't have a 'result' struct.  It should be fixed to avoid
    * this special case, but work around it with a NULL check:
    */
   if (result != NULL &&
       key->num_unnormalized_coords)
   {
      unsigned offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
      int i;

      for (i = 0; i < key->num_textures; i++) {
         if (key->tex[i].unnormalized) {
            struct pipe_resource *tex = svga->curr.sampler_views[i]->texture;
            float data[4];

            data[0] = 1.0 / (float)tex->width0;
            data[1] = 1.0 / (float)tex->height0;
            data[2] = 1.0;
            data[3] = 1.0;

            ret = emit_const( svga,
                              PIPE_SHADER_FRAGMENT,
                              key->tex[i].width_height_idx + offset,
                              data );
            if (ret)
               return ret;
         }
      }

      offset += key->num_unnormalized_coords;
   }

   return 0;
}


struct svga_tracked_state svga_hw_fs_parameters = 
{
   "hw fs params",
   (SVGA_NEW_FS_CONST_BUFFER |
    SVGA_NEW_FS_RESULT |
    SVGA_NEW_TEXTURE_BINDING),
   emit_fs_consts
};

/***********************************************************************
 */

static int emit_vs_consts( struct svga_context *svga,
                           unsigned dirty )
{
   const struct svga_shader_result *result = svga->state.hw_draw.vs;
   const struct svga_vs_compile_key *key = &result->key.vkey;
   int ret = 0;
   unsigned offset;

   /* SVGA_NEW_VS_RESULT
    */
   if (result == NULL) 
      return 0;

   /* SVGA_NEW_VS_CONST_BUFFER 
    */
   ret = emit_consts( svga, 0, PIPE_SHADER_VERTEX );
   if (ret)
      return ret;

   offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;

   /* SVGA_NEW_VS_RESULT
    */
   if (key->need_prescale) {
      ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
                        svga->state.hw_clear.prescale.scale );
      if (ret)
         return ret;

      ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
                        svga->state.hw_clear.prescale.translate );
      if (ret)
         return ret;
   }

   /* SVGA_NEW_ZERO_STRIDE
    */
   if (key->zero_stride_vertex_elements) {
      unsigned i, curr_zero_stride = 0;
      for (i = 0; i < PIPE_MAX_ATTRIBS; ++i) {
         if (key->zero_stride_vertex_elements & (1 << i)) {
            ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
                              svga->curr.zero_stride_constants +
                              4 * curr_zero_stride );
            if (ret)
               return ret;
            ++curr_zero_stride;
         }
      }
   }

   return 0;
}


struct svga_tracked_state svga_hw_vs_parameters = 
{
   "hw vs params",
   (SVGA_NEW_PRESCALE |
    SVGA_NEW_VS_CONST_BUFFER |
    SVGA_NEW_ZERO_STRIDE |
    SVGA_NEW_VS_RESULT),
   emit_vs_consts
};