src/gallium/state_trackers/vega/shaders_cache.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "shaders_cache.h"
  28
  29 #include "vg_context.h"
  30
  31 #include "pipe/p_context.h"
  32 #include "pipe/p_defines.h"
  33 #include "util/u_inlines.h"
  34 #include "pipe/p_screen.h"
  35 #include "pipe/p_shader_tokens.h"
  36
  37 #include "tgsi/tgsi_build.h"
  38 #include "tgsi/tgsi_dump.h"
  39 #include "tgsi/tgsi_parse.h"
  40 #include "tgsi/tgsi_util.h"
  41 #include "tgsi/tgsi_text.h"
  42
  43 #include "util/u_memory.h"
  44 #include "util/u_math.h"
  45 #include "util/u_debug.h"
  46 #include "cso_cache/cso_hash.h"
  47 #include "cso_cache/cso_context.h"
  48
  49 #include "VG/openvg.h"
  50
  51 #include "asm_fill.h"
  52
  53 /* Essentially we construct an ubber-shader based on the state
  54  * of the pipeline. The stages are:
  55  * 1) Fill (mandatory, solid color/gradient/pattern/image draw)
  56  * 2) Image composition (image mode multiply and stencil)
  57  * 3) Mask
  58  * 4) Extended blend (multiply/screen/darken/lighten)
  59  * 5) Premultiply/Unpremultiply
  60  * 6) Color transform (to black and white)
  61  */
  62 #define SHADER_STAGES 6
  63
  64 struct cached_shader {
  65    void *driver_shader;
  66    struct pipe_shader_state state;
  67 };
  68
  69 struct shaders_cache {
  70    struct vg_context *pipe;
  71
  72    struct cso_hash *hash;
  73 };
  74
  75
  76 static INLINE struct tgsi_token *tokens_from_assembly(const char *txt, int num_tokens)
  77 {
  78    struct tgsi_token *tokens;
  79
  80    tokens = (struct tgsi_token *) MALLOC(num_tokens * sizeof(tokens[0]));
  81
  82    tgsi_text_translate(txt, tokens, num_tokens);
  83
  84 #if DEBUG_SHADERS
  85    tgsi_dump(tokens, 0);
  86 #endif
  87
  88    return tokens;
  89 }
  90
  91 #define ALL_FILLS (VEGA_SOLID_FILL_SHADER | \
  92    VEGA_LINEAR_GRADIENT_SHADER | \
  93    VEGA_RADIAL_GRADIENT_SHADER | \
  94    VEGA_PATTERN_SHADER         | \
  95    VEGA_IMAGE_NORMAL_SHADER)
  96
  97
  98 /*
  99 static const char max_shader_preamble[] =
 100    "FRAG\n"
 101    "DCL IN[0], POSITION, LINEAR\n"
 102    "DCL IN[1], GENERIC[0], PERSPECTIVE\n"
 103    "DCL OUT[0], COLOR, CONSTANT\n"
 104    "DCL CONST[0..9], CONSTANT\n"
 105    "DCL TEMP[0..9], CONSTANT\n"
 106    "DCL SAMP[0..9], CONSTANT\n";
 107
 108    max_shader_preamble strlen == 175
 109 */
 110 #define MAX_PREAMBLE 175
 111
 112 static INLINE VGint range_min(VGint min, VGint current)
 113 {
 114    if (min < 0)
 115       min = current;
 116    else
 117       min = MIN2(min, current);
 118    return min;
 119 }
 120
 121 static INLINE VGint range_max(VGint max, VGint current)
 122 {
 123    return MAX2(max, current);
 124 }
 125
 126 static void *
 127 combine_shaders(const struct shader_asm_info *shaders[SHADER_STAGES], int num_shaders,
 128                 struct pipe_context *pipe,
 129                 struct pipe_shader_state *shader)
 130 {
 131    VGboolean declare_input = VG_FALSE;
 132    VGint start_const   = -1, end_const   = 0;
 133    VGint start_temp    = -1, end_temp    = 0;
 134    VGint start_sampler = -1, end_sampler = 0;
 135    VGint i, current_shader = 0;
 136    VGint num_consts, num_temps, num_samplers;
 137    struct ureg_program *ureg;
 138    struct ureg_src in[2];
 139    struct ureg_src *sampler = NULL;
 140    struct ureg_src *constant = NULL;
 141    struct ureg_dst out, *temp = NULL;
 142    void *p = NULL;
 143
 144    for (i = 0; i < num_shaders; ++i) {
 145       if (shaders[i]->num_consts)
 146          start_const = range_min(start_const, shaders[i]->start_const);
 147       if (shaders[i]->num_temps)
 148          start_temp = range_min(start_temp, shaders[i]->start_temp);
 149       if (shaders[i]->num_samplers)
 150          start_sampler = range_min(start_sampler, shaders[i]->start_sampler);
 151
 152       end_const = range_max(end_const, shaders[i]->start_const +
 153                             shaders[i]->num_consts);
 154       end_temp = range_max(end_temp, shaders[i]->start_temp +
 155                             shaders[i]->num_temps);
 156       end_sampler = range_max(end_sampler, shaders[i]->start_sampler +
 157                             shaders[i]->num_samplers);
 158       if (shaders[i]->needs_position)
 159          declare_input = VG_TRUE;
 160    }
 161    /* if they're still unitialized, initialize them */
 162    if (start_const < 0)
 163       start_const = 0;
 164    if (start_temp < 0)
 165       start_temp = 0;
 166    if (start_sampler < 0)
 167        start_sampler = 0;
 168
 169    num_consts   = end_const   - start_const;
 170    num_temps    = end_temp    - start_temp;
 171    num_samplers = end_sampler - start_sampler;
 172
 173    ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 174    if (!ureg)
 175        return NULL;
 176
 177    if (declare_input) {
 178       in[0] = ureg_DECL_fs_input(ureg,
 179                                  TGSI_SEMANTIC_POSITION,
 180                                  0,
 181                                  TGSI_INTERPOLATE_LINEAR);
 182       in[1] = ureg_DECL_fs_input(ureg,
 183                                  TGSI_SEMANTIC_GENERIC,
 184                                  0,
 185                                  TGSI_INTERPOLATE_PERSPECTIVE);
 186    }
 187
 188    /* we always have a color output */
 189    out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
 190
 191    if (num_consts >= 1) {
 192       constant = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_const);
 193       for (i = start_const; i < end_const; i++) {
 194          constant[i] = ureg_DECL_constant(ureg, i);
 195       }
 196
 197    }
 198
 199    if (num_temps >= 1) {
 200       temp = (struct ureg_dst *) malloc(sizeof(struct ureg_dst) * end_temp);
 201       for (i = start_temp; i < end_temp; i++) {
 202          temp[i] = ureg_DECL_temporary(ureg);
 203       }
 204    }
 205
 206    if (num_samplers >= 1) {
 207       sampler = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_sampler);
 208       for (i = start_sampler; i < end_sampler; i++) {
 209          sampler[i] = ureg_DECL_sampler(ureg, i);
 210       }
 211    }
 212
 213    while (current_shader < num_shaders) {
 214       if ((current_shader + 1) == num_shaders) {
 215          shaders[current_shader]->func(ureg,
 216                                        &out,
 217                                        in,
 218                                        sampler,
 219                                        temp,
 220                                        constant);
 221       } else {
 222          shaders[current_shader]->func(ureg,
 223                                       &temp[0],
 224                                       in,
 225                                       sampler,
 226                                       temp,
 227                                       constant);
 228       }
 229       current_shader++;
 230    }
 231
 232    ureg_END(ureg);
 233
 234    shader->tokens = ureg_finalize(ureg);
 235    if(!shader->tokens)
 236       return NULL;
 237
 238    p = pipe->create_fs_state(pipe, shader);
 239    ureg_destroy(ureg);
 240
 241    if (num_temps >= 1) {
 242       for (i = start_temp; i < end_temp; i++) {
 243          ureg_release_temporary(ureg, temp[i]);
 244       }
 245    }
 246
 247    if (temp)
 248       free(temp);
 249    if (constant)
 250       free(constant);
 251    if (sampler)
 252       free(sampler);
 253
 254    return p;
 255 }
 256
 257 static void *
 258 create_shader(struct pipe_context *pipe,
 259               int id,
 260               struct pipe_shader_state *shader)
 261 {
 262    int idx = 0;
 263    const struct shader_asm_info * shaders[SHADER_STAGES];
 264
 265    /* the shader has to have a fill */
 266    debug_assert(id & ALL_FILLS);
 267
 268    /* first stage */
 269    if (id & VEGA_SOLID_FILL_SHADER) {
 270       debug_assert(idx == 0);
 271       shaders[idx] = &shaders_asm[0];
 272       debug_assert(shaders_asm[0].id == VEGA_SOLID_FILL_SHADER);
 273       ++idx;
 274    }
 275    if ((id & VEGA_LINEAR_GRADIENT_SHADER)) {
 276       debug_assert(idx == 0);
 277       shaders[idx] = &shaders_asm[1];
 278       debug_assert(shaders_asm[1].id == VEGA_LINEAR_GRADIENT_SHADER);
 279       ++idx;
 280    }
 281    if ((id & VEGA_RADIAL_GRADIENT_SHADER)) {
 282       debug_assert(idx == 0);
 283       shaders[idx] = &shaders_asm[2];
 284       debug_assert(shaders_asm[2].id == VEGA_RADIAL_GRADIENT_SHADER);
 285       ++idx;
 286    }
 287    if ((id & VEGA_PATTERN_SHADER)) {
 288       debug_assert(idx == 0);
 289       debug_assert(shaders_asm[3].id == VEGA_PATTERN_SHADER);
 290       shaders[idx] = &shaders_asm[3];
 291       ++idx;
 292    }
 293    if ((id & VEGA_IMAGE_NORMAL_SHADER)) {
 294       debug_assert(idx == 0);
 295       debug_assert(shaders_asm[4].id == VEGA_IMAGE_NORMAL_SHADER);
 296       shaders[idx] = &shaders_asm[4];
 297       ++idx;
 298    }
 299
 300    /* second stage */
 301    if ((id & VEGA_IMAGE_MULTIPLY_SHADER)) {
 302       debug_assert(shaders_asm[5].id == VEGA_IMAGE_MULTIPLY_SHADER);
 303       shaders[idx] = &shaders_asm[5];
 304       ++idx;
 305    } else if ((id & VEGA_IMAGE_STENCIL_SHADER)) {
 306       debug_assert(shaders_asm[6].id == VEGA_IMAGE_STENCIL_SHADER);
 307       shaders[idx] = &shaders_asm[6];
 308       ++idx;
 309    }
 310
 311    /* third stage */
 312    if ((id & VEGA_MASK_SHADER)) {
 313       debug_assert(idx == 1);
 314       debug_assert(shaders_asm[7].id == VEGA_MASK_SHADER);
 315       shaders[idx] = &shaders_asm[7];
 316       ++idx;
 317    }
 318
 319    /* fourth stage */
 320    if ((id & VEGA_BLEND_MULTIPLY_SHADER)) {
 321       debug_assert(shaders_asm[8].id == VEGA_BLEND_MULTIPLY_SHADER);
 322       shaders[idx] = &shaders_asm[8];
 323       ++idx;
 324    } else if ((id & VEGA_BLEND_SCREEN_SHADER)) {
 325       debug_assert(shaders_asm[9].id == VEGA_BLEND_SCREEN_SHADER);
 326       shaders[idx] = &shaders_asm[9];
 327       ++idx;
 328    } else if ((id & VEGA_BLEND_DARKEN_SHADER)) {
 329       debug_assert(shaders_asm[10].id == VEGA_BLEND_DARKEN_SHADER);
 330       shaders[idx] = &shaders_asm[10];
 331       ++idx;
 332    } else if ((id & VEGA_BLEND_LIGHTEN_SHADER)) {
 333       debug_assert(shaders_asm[11].id == VEGA_BLEND_LIGHTEN_SHADER);
 334       shaders[idx] = &shaders_asm[11];
 335       ++idx;
 336    }
 337
 338    /* fifth stage */
 339    if ((id & VEGA_PREMULTIPLY_SHADER)) {
 340       debug_assert(shaders_asm[12].id == VEGA_PREMULTIPLY_SHADER);
 341       shaders[idx] = &shaders_asm[12];
 342       ++idx;
 343    } else if ((id & VEGA_UNPREMULTIPLY_SHADER)) {
 344       debug_assert(shaders_asm[13].id == VEGA_UNPREMULTIPLY_SHADER);
 345       shaders[idx] = &shaders_asm[13];
 346       ++idx;
 347    }
 348
 349    /* sixth stage */
 350    if ((id & VEGA_BW_SHADER)) {
 351       debug_assert(shaders_asm[14].id == VEGA_BW_SHADER);
 352       shaders[idx] = &shaders_asm[14];
 353       ++idx;
 354    }
 355
 356    return combine_shaders(shaders, idx, pipe, shader);
 357 }
 358
 359 /*************************************************/
 360
 361 struct shaders_cache * shaders_cache_create(struct vg_context *vg)
 362 {
 363    struct shaders_cache *sc = CALLOC_STRUCT(shaders_cache);
 364
 365    sc->pipe = vg;
 366    sc->hash = cso_hash_create();
 367
 368    return sc;
 369 }
 370
 371 void shaders_cache_destroy(struct shaders_cache *sc)
 372 {
 373    struct cso_hash_iter iter = cso_hash_first_node(sc->hash);
 374
 375    while (!cso_hash_iter_is_null(iter)) {
 376       struct cached_shader *cached =
 377          (struct cached_shader *)cso_hash_iter_data(iter);
 378       cso_delete_fragment_shader(sc->pipe->cso_context,
 379                                  cached->driver_shader);
 380       iter = cso_hash_erase(sc->hash, iter);
 381    }
 382
 383    cso_hash_delete(sc->hash);
 384    free(sc);
 385 }
 386
 387 void * shaders_cache_fill(struct shaders_cache *sc,
 388                           int shader_key)
 389 {
 390    VGint key = shader_key;
 391    struct cached_shader *cached;
 392    struct cso_hash_iter iter = cso_hash_find(sc->hash, key);
 393
 394    if (cso_hash_iter_is_null(iter)) {
 395       cached = CALLOC_STRUCT(cached_shader);
 396       cached->driver_shader = create_shader(sc->pipe->pipe, key, &cached->state);
 397
 398       cso_hash_insert(sc->hash, key, cached);
 399
 400       return cached->driver_shader;
 401    }
 402
 403    cached = (struct cached_shader *)cso_hash_iter_data(iter);
 404
 405    assert(cached->driver_shader);
 406    return cached->driver_shader;
 407 }
 408
 409 struct vg_shader * shader_create_from_text(struct pipe_context *pipe,
 410                                            const char *txt, int num_tokens,
 411                                            int type)
 412 {
 413    struct vg_shader *shader = (struct vg_shader *)malloc(
 414       sizeof(struct vg_shader));
 415    struct tgsi_token *tokens = tokens_from_assembly(txt, num_tokens);
 416    struct pipe_shader_state state;
 417
 418    debug_assert(type == PIPE_SHADER_VERTEX ||
 419                 type == PIPE_SHADER_FRAGMENT);
 420
 421    state.tokens = tokens;
 422    shader->type = type;
 423    shader->tokens = tokens;
 424
 425    if (type == PIPE_SHADER_FRAGMENT)
 426       shader->driver = pipe->create_fs_state(pipe, &state);
 427    else
 428       shader->driver = pipe->create_vs_state(pipe, &state);
 429    return shader;
 430 }
 431
 432 void vg_shader_destroy(struct vg_context *ctx, struct vg_shader *shader)
 433 {
 434    if (shader->type == PIPE_SHADER_FRAGMENT)
 435       cso_delete_fragment_shader(ctx->cso_context, shader->driver);
 436    else
 437       cso_delete_vertex_shader(ctx->cso_context, shader->driver);
 438    free(shader->tokens);
 439    free(shader);
 440 }