summaryrefslogtreecommitdiff
path: root/src/gallium/state_trackers/xorg/xorg_exa_tgsi.c
blob: 3c90dab3c5d9a3e9d65fc19bc6688d0f62dcf932 (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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
#include "xorg_exa_tgsi.h"

/*### stupidity defined in X11/extensions/XI.h */
#undef Absolute

#include "pipe/p_format.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "pipe/p_inlines.h"
#include "pipe/p_shader_tokens.h"

#include "util/u_memory.h"
#include "util/u_simple_shaders.h"

#include "tgsi/tgsi_ureg.h"

#include "cso_cache/cso_context.h"
#include "cso_cache/cso_hash.h"

/* Vertex shader:
 * IN[0]    = vertex pos
 * IN[1]    = src tex coord | solid fill color
 * IN[2]    = mask tex coord
 * IN[3]    = dst tex coord
 * CONST[0] = (2/dst_width, 2/dst_height, 1, 1)
 * CONST[1] = (-1, -1, 0, 0)
 *
 * OUT[0]   = vertex pos
 * OUT[1]   = src tex coord | solid fill color
 * OUT[2]   = mask tex coord
 * OUT[3]   = dst tex coord
 */

/* Fragment shader:
 * SAMP[0]  = src
 * SAMP[1]  = mask
 * SAMP[2]  = dst
 * IN[0]    = pos src | solid fill color
 * IN[1]    = pos mask
 * IN[2]    = pos dst
 * CONST[0] = (0, 0, 0, 1)
 *
 * OUT[0] = color
 */

struct xorg_shaders {
   struct xorg_renderer *r;

   struct cso_hash *vs_hash;
   struct cso_hash *fs_hash;
};

static INLINE void
src_in_mask(struct ureg_program *ureg,
            struct ureg_dst dst,
            struct ureg_src src,
            struct ureg_src mask,
            int component_alpha)
{
   if (component_alpha == FS_CA_FULL) {
      ureg_MUL(ureg, dst, src, mask);
   } else if (component_alpha == FS_CA_SRCALPHA) {
      ureg_MUL(ureg, dst,
               ureg_scalar(src, TGSI_SWIZZLE_W), mask);
   }
   else {
      ureg_MUL(ureg, dst, src,
               ureg_scalar(mask, TGSI_SWIZZLE_X));
   }
}

static struct ureg_src
vs_normalize_coords(struct ureg_program *ureg, struct ureg_src coords,
                    struct ureg_src const0, struct ureg_src const1)
{
   struct ureg_dst tmp = ureg_DECL_temporary(ureg);
   struct ureg_src ret;
   ureg_MAD(ureg, tmp, coords, const0, const1);
   ret = ureg_src(tmp);
   ureg_release_temporary(ureg, tmp);
   return ret;
}

static void
linear_gradient(struct ureg_program *ureg,
                struct ureg_dst out,
                struct ureg_src pos,
                struct ureg_src sampler,
                struct ureg_src coords,
                struct ureg_src const0124,
                struct ureg_src matrow0,
                struct ureg_src matrow1,
                struct ureg_src matrow2)
{
   struct ureg_dst temp0 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp1 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp2 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp3 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp4 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp5 = ureg_DECL_temporary(ureg);

   ureg_MOV(ureg,
            ureg_writemask(temp0, TGSI_WRITEMASK_XY), pos);
   ureg_MOV(ureg,
            ureg_writemask(temp0, TGSI_WRITEMASK_Z),
            ureg_scalar(const0124, TGSI_SWIZZLE_Y));

   ureg_DP3(ureg, temp1, matrow0, ureg_src(temp0));
   ureg_DP3(ureg, temp2, matrow1, ureg_src(temp0));
   ureg_DP3(ureg, temp3, matrow2, ureg_src(temp0));
   ureg_RCP(ureg, temp3, ureg_src(temp3));
   ureg_MUL(ureg, temp1, ureg_src(temp1), ureg_src(temp3));
   ureg_MUL(ureg, temp2, ureg_src(temp2), ureg_src(temp3));

   ureg_MOV(ureg, ureg_writemask(temp4, TGSI_WRITEMASK_X),
            ureg_src(temp1));
   ureg_MOV(ureg, ureg_writemask(temp4, TGSI_WRITEMASK_Y),
            ureg_src(temp2));

   ureg_MUL(ureg, temp0,
            ureg_scalar(coords, TGSI_SWIZZLE_Y),
            ureg_scalar(ureg_src(temp4), TGSI_SWIZZLE_Y));
   ureg_MAD(ureg, temp1,
            ureg_scalar(coords, TGSI_SWIZZLE_X),
            ureg_scalar(ureg_src(temp4), TGSI_SWIZZLE_X),
            ureg_src(temp0));

   ureg_MUL(ureg, temp2,
            ureg_src(temp1),
            ureg_scalar(coords, TGSI_SWIZZLE_Z));

   ureg_TEX(ureg, out,
            TGSI_TEXTURE_1D, ureg_src(temp2), sampler);

   ureg_release_temporary(ureg, temp0);
   ureg_release_temporary(ureg, temp1);
   ureg_release_temporary(ureg, temp2);
   ureg_release_temporary(ureg, temp3);
   ureg_release_temporary(ureg, temp4);
   ureg_release_temporary(ureg, temp5);
}


static void
radial_gradient(struct ureg_program *ureg,
                struct ureg_dst out,
                struct ureg_src pos,
                struct ureg_src sampler,
                struct ureg_src coords,
                struct ureg_src const0124,
                struct ureg_src matrow0,
                struct ureg_src matrow1,
                struct ureg_src matrow2)
{
   struct ureg_dst temp0 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp1 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp2 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp3 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp4 = ureg_DECL_temporary(ureg);
   struct ureg_dst temp5 = ureg_DECL_temporary(ureg);

   ureg_MOV(ureg,
            ureg_writemask(temp0, TGSI_WRITEMASK_XY),
            pos);
   ureg_MOV(ureg,
            ureg_writemask(temp0, TGSI_WRITEMASK_Z),
            ureg_scalar(const0124, TGSI_SWIZZLE_Y));

   ureg_DP3(ureg, temp1, matrow0, ureg_src(temp0));
   ureg_DP3(ureg, temp2, matrow1, ureg_src(temp0));
   ureg_DP3(ureg, temp3, matrow2, ureg_src(temp0));
   ureg_RCP(ureg, temp3, ureg_src(temp3));
   ureg_MUL(ureg, temp1, ureg_src(temp1), ureg_src(temp3));
   ureg_MUL(ureg, temp2, ureg_src(temp2), ureg_src(temp3));

   ureg_MOV(ureg, ureg_writemask(temp5, TGSI_WRITEMASK_X),
            ureg_src(temp1));
   ureg_MOV(ureg, ureg_writemask(temp5, TGSI_WRITEMASK_Y),
            ureg_src(temp2));

   ureg_MUL(ureg, temp0, ureg_scalar(coords, TGSI_SWIZZLE_Y),
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y));
   ureg_MAD(ureg, temp1,
            ureg_scalar(coords, TGSI_SWIZZLE_X),
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
            ureg_src(temp0));
   ureg_ADD(ureg, temp1,
            ureg_src(temp1), ureg_src(temp1));
   ureg_MUL(ureg, temp3,
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y),
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_Y));
   ureg_MAD(ureg, temp4,
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
            ureg_scalar(ureg_src(temp5), TGSI_SWIZZLE_X),
            ureg_src(temp3));
   ureg_MOV(ureg, temp4, ureg_negate(ureg_src(temp4)));
   ureg_MUL(ureg, temp2,
            ureg_scalar(coords, TGSI_SWIZZLE_Z),
            ureg_src(temp4));
   ureg_MUL(ureg, temp0,
            ureg_scalar(const0124, TGSI_SWIZZLE_W),
            ureg_src(temp2));
   ureg_MUL(ureg, temp3,
            ureg_src(temp1), ureg_src(temp1));
   ureg_SUB(ureg, temp2,
            ureg_src(temp3), ureg_src(temp0));
   ureg_RSQ(ureg, temp2, ureg_abs(ureg_src(temp2)));
   ureg_RCP(ureg, temp2, ureg_src(temp2));
   ureg_SUB(ureg, temp1,
            ureg_src(temp2), ureg_src(temp1));
   ureg_ADD(ureg, temp0,
            ureg_scalar(coords, TGSI_SWIZZLE_Z),
            ureg_scalar(coords, TGSI_SWIZZLE_Z));
   ureg_RCP(ureg, temp0, ureg_src(temp0));
   ureg_MUL(ureg, temp2,
            ureg_src(temp1), ureg_src(temp0));
   ureg_TEX(ureg, out, TGSI_TEXTURE_1D,
            ureg_src(temp2), sampler);

   ureg_release_temporary(ureg, temp0);
   ureg_release_temporary(ureg, temp1);
   ureg_release_temporary(ureg, temp2);
   ureg_release_temporary(ureg, temp3);
   ureg_release_temporary(ureg, temp4);
   ureg_release_temporary(ureg, temp5);
}

static void *
create_vs(struct pipe_context *pipe,
          unsigned vs_traits)
{
   struct ureg_program *ureg;
   struct ureg_src src;
   struct ureg_dst dst;
   struct ureg_src const0, const1;
   boolean is_fill = vs_traits & VS_FILL;
   boolean is_composite = vs_traits & VS_COMPOSITE;
   boolean has_mask = vs_traits & VS_MASK;
   unsigned input_slot = 0;

   ureg = ureg_create(TGSI_PROCESSOR_VERTEX);
   if (ureg == NULL)
      return 0;

   const0 = ureg_DECL_constant(ureg, 0);
   const1 = ureg_DECL_constant(ureg, 1);

   /* it has to be either a fill or a composite op */
   debug_assert(is_fill ^ is_composite);

   src = ureg_DECL_vs_input(ureg, input_slot++);
   dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
   src = vs_normalize_coords(ureg, src,
                             const0, const1);
   ureg_MOV(ureg, dst, src);

   if (is_composite) {
      src = ureg_DECL_vs_input(ureg, input_slot++);
      dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_GENERIC, 0);
      ureg_MOV(ureg, dst, src);
   }

   if (is_fill) {
      src = ureg_DECL_vs_input(ureg, input_slot++);
      dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
      ureg_MOV(ureg, dst, src);
   }

   if (has_mask) {
      src = ureg_DECL_vs_input(ureg, input_slot++);
      dst = ureg_DECL_output(ureg, TGSI_SEMANTIC_GENERIC, 1);
      ureg_MOV(ureg, dst, src);
   }

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}

static void *
create_fs(struct pipe_context *pipe,
          unsigned fs_traits)
{
   struct ureg_program *ureg;
   struct ureg_src /*dst_sampler,*/ src_sampler, mask_sampler;
   struct ureg_src /*dst_pos,*/ src_input, mask_pos;
   struct ureg_dst src, mask;
   struct ureg_dst out;
   boolean has_mask = fs_traits & FS_MASK;
   boolean is_fill = fs_traits & FS_FILL;
   boolean is_composite = fs_traits & FS_COMPOSITE;
   boolean is_solid   = fs_traits & FS_SOLID_FILL;
   boolean is_lingrad = fs_traits & FS_LINGRAD_FILL;
   boolean is_radgrad = fs_traits & FS_RADGRAD_FILL;
   unsigned comp_alpha = fs_traits & FS_COMPONENT_ALPHA;

   ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
   if (ureg == NULL)
      return 0;

   /* it has to be either a fill or a composite op */
   debug_assert(is_fill ^ is_composite);

   out = ureg_DECL_output(ureg,
                          TGSI_SEMANTIC_COLOR,
                          0);

   if (is_composite) {
      src_sampler = ureg_DECL_sampler(ureg, 0);
      src_input = ureg_DECL_fs_input(ureg,
                                     TGSI_SEMANTIC_GENERIC,
                                     0,
                                     TGSI_INTERPOLATE_PERSPECTIVE);
   } else {
      debug_assert(is_fill);
      if (is_solid)
         src_input = ureg_DECL_fs_input(ureg,
                                        TGSI_SEMANTIC_COLOR,
                                        0,
                                        TGSI_INTERPOLATE_PERSPECTIVE);
      else
         src_input = ureg_DECL_fs_input(ureg,
                                        TGSI_SEMANTIC_POSITION,
                                        0,
                                        TGSI_INTERPOLATE_PERSPECTIVE);
   }

   if (has_mask) {
      mask_sampler = ureg_DECL_sampler(ureg, 1);
      mask_pos = ureg_DECL_fs_input(ureg,
                                    TGSI_SEMANTIC_GENERIC,
                                    1,
                                    TGSI_INTERPOLATE_PERSPECTIVE);
   }

#if 0  /* unused right now */
   dst_sampler = ureg_DECL_sampler(ureg, 2);
   dst_pos = ureg_DECL_fs_input(ureg,
                                TGSI_SEMANTIC_POSITION,
                                2,
                                TGSI_INTERPOLATE_PERSPECTIVE);
#endif

   if (is_composite) {
      if (has_mask)
         src = ureg_DECL_temporary(ureg);
      else
         src = out;
      ureg_TEX(ureg, src,
               TGSI_TEXTURE_2D, src_input, src_sampler);
   } else if (is_fill) {
      if (is_solid) {
         if (has_mask)
            src = ureg_dst(src_input);
         else
            ureg_MOV(ureg, out, src_input);
      } else if (is_lingrad || is_radgrad) {
         struct ureg_src coords, const0124,
            matrow0, matrow1, matrow2;

         if (has_mask)
            src = ureg_DECL_temporary(ureg);
         else
            src = out;

         coords = ureg_DECL_constant(ureg, 0);
         const0124 = ureg_DECL_constant(ureg, 1);
         matrow0 = ureg_DECL_constant(ureg, 2);
         matrow1 = ureg_DECL_constant(ureg, 3);
         matrow2 = ureg_DECL_constant(ureg, 4);

         if (is_lingrad) {
            linear_gradient(ureg, src,
                            src_input, src_sampler,
                            coords, const0124,
                            matrow0, matrow1, matrow2);
         } else if (is_radgrad) {
            radial_gradient(ureg, src,
                            src_input, src_sampler,
                            coords, const0124,
                            matrow0, matrow1, matrow2);
         }
      } else
         debug_assert(!"Unknown fill type!");
   }

   if (has_mask) {
      mask = ureg_DECL_temporary(ureg);
      ureg_TEX(ureg, mask,
               TGSI_TEXTURE_2D, mask_pos, mask_sampler);
      /* src IN mask */
      src_in_mask(ureg, out, ureg_src(src), ureg_src(mask), comp_alpha);
      ureg_release_temporary(ureg, mask);
   }

   ureg_END(ureg);

   return ureg_create_shader_and_destroy(ureg, pipe);
}

struct xorg_shaders * xorg_shaders_create(struct xorg_renderer *r)
{
   struct xorg_shaders *sc = CALLOC_STRUCT(xorg_shaders);

   sc->r = r;
   sc->vs_hash = cso_hash_create();
   sc->fs_hash = cso_hash_create();

   return sc;
}

static void
cache_destroy(struct cso_context *cso,
              struct cso_hash *hash,
              unsigned processor)
{
   struct cso_hash_iter iter = cso_hash_first_node(hash);
   while (!cso_hash_iter_is_null(iter)) {
      void *shader = (void *)cso_hash_iter_data(iter);
      if (processor == PIPE_SHADER_FRAGMENT) {
         cso_delete_fragment_shader(cso, shader);
      } else if (processor == PIPE_SHADER_VERTEX) {
         cso_delete_vertex_shader(cso, shader);
      }
      iter = cso_hash_erase(hash, iter);
   }
   cso_hash_delete(hash);
}

void xorg_shaders_destroy(struct xorg_shaders *sc)
{
   cache_destroy(sc->r->cso, sc->vs_hash,
                 PIPE_SHADER_VERTEX);
   cache_destroy(sc->r->cso, sc->fs_hash,
                 PIPE_SHADER_FRAGMENT);

   free(sc);
}

static INLINE void *
shader_from_cache(struct pipe_context *pipe,
                  unsigned type,
                  struct cso_hash *hash,
                  unsigned key)
{
   void *shader = 0;

   struct cso_hash_iter iter = cso_hash_find(hash, key);

   if (cso_hash_iter_is_null(iter)) {
      if (type == PIPE_SHADER_VERTEX)
         shader = create_vs(pipe, key);
      else
         shader = create_fs(pipe, key);
      cso_hash_insert(hash, key, shader);
   } else
      shader = (void *)cso_hash_iter_data(iter);

   return shader;
}

struct xorg_shader xorg_shaders_get(struct xorg_shaders *sc,
                                    unsigned vs_traits,
                                    unsigned fs_traits)
{
   struct xorg_shader shader = { NULL, NULL };
   void *vs, *fs;

   vs = shader_from_cache(sc->r->pipe, PIPE_SHADER_VERTEX,
                          sc->vs_hash, vs_traits);
   fs = shader_from_cache(sc->r->pipe, PIPE_SHADER_FRAGMENT,
                          sc->fs_hash, fs_traits);

   debug_assert(vs && fs);
   if (!vs || !fs)
      return shader;

   shader.vs = vs;
   shader.fs = fs;

   return shader;
}