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 "pipe/p_shader_tokens.h"
  34
  35 #include "tgsi/tgsi_build.h"
  36 #include "tgsi/tgsi_dump.h"
  37 #include "tgsi/tgsi_parse.h"
  38 #include "tgsi/tgsi_util.h"
  39 #include "tgsi/tgsi_text.h"
  40
  41 #include "util/u_memory.h"
  42 #include "util/u_math.h"
  43 #include "util/u_debug.h"
  44 #include "cso_cache/cso_hash.h"
  45 #include "cso_cache/cso_context.h"
  46
  47 #include "VG/openvg.h"
  48
  49 #include "asm_fill.h"
  50
  51 /* Essentially we construct an ubber-shader based on the state
  52  * of the pipeline. The stages are:
  53  * 1) Paint generation (color/gradient/pattern)
  54  * 2) Image composition (normal/multiply/stencil)
  55  * 3) Color transform
  56  * 4) Per-channel alpha generation
  57  * 5) Extended blend (multiply/screen/darken/lighten)
  58  * 6) Mask
  59  * 7) Premultiply/Unpremultiply
  60  * 8) Color transform (to black and white)
  61  */
  62 #define SHADER_STAGES 8
  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 /*
  92 static const char max_shader_preamble[] =
  93    "FRAG\n"
  94    "DCL IN[0], POSITION, LINEAR\n"
  95    "DCL IN[1], GENERIC[0], PERSPECTIVE\n"
  96    "DCL OUT[0], COLOR, CONSTANT\n"
  97    "DCL CONST[0..9], CONSTANT\n"
  98    "DCL TEMP[0..9], CONSTANT\n"
  99    "DCL SAMP[0..9], CONSTANT\n";
 100
 101    max_shader_preamble strlen == 175
 102 */
 103 #define MAX_PREAMBLE 175
 104
 105 static INLINE VGint range_min(VGint min, VGint current)
 106 {
 107    if (min < 0)
 108       min = current;
 109    else
 110       min = MIN2(min, current);
 111    return min;
 112 }
 113
 114 static INLINE VGint range_max(VGint max, VGint current)
 115 {
 116    return MAX2(max, current);
 117 }
 118
 119 static void *
 120 combine_shaders(const struct shader_asm_info *shaders[SHADER_STAGES], int num_shaders,
 121                 struct pipe_context *pipe,
 122                 struct pipe_shader_state *shader)
 123 {
 124    VGboolean declare_input = VG_FALSE;
 125    VGint start_const   = -1, end_const   = 0;
 126    VGint start_temp    = -1, end_temp    = 0;
 127    VGint start_sampler = -1, end_sampler = 0;
 128    VGint i, current_shader = 0;
 129    VGint num_consts, num_temps, num_samplers;
 130    struct ureg_program *ureg;
 131    struct ureg_src in[2];
 132    struct ureg_src *sampler = NULL;
 133    struct ureg_src *constant = NULL;
 134    struct ureg_dst out, *temp = NULL;
 135    void *p = NULL;
 136
 137    for (i = 0; i < num_shaders; ++i) {
 138       if (shaders[i]->num_consts)
 139          start_const = range_min(start_const, shaders[i]->start_const);
 140       if (shaders[i]->num_temps)
 141          start_temp = range_min(start_temp, shaders[i]->start_temp);
 142       if (shaders[i]->num_samplers)
 143          start_sampler = range_min(start_sampler, shaders[i]->start_sampler);
 144
 145       end_const = range_max(end_const, shaders[i]->start_const +
 146                             shaders[i]->num_consts);
 147       end_temp = range_max(end_temp, shaders[i]->start_temp +
 148                             shaders[i]->num_temps);
 149       end_sampler = range_max(end_sampler, shaders[i]->start_sampler +
 150                             shaders[i]->num_samplers);
 151       if (shaders[i]->needs_position)
 152          declare_input = VG_TRUE;
 153    }
 154    /* if they're still unitialized, initialize them */
 155    if (start_const < 0)
 156       start_const = 0;
 157    if (start_temp < 0)
 158       start_temp = 0;
 159    if (start_sampler < 0)
 160        start_sampler = 0;
 161
 162    num_consts   = end_const   - start_const;
 163    num_temps    = end_temp    - start_temp;
 164    num_samplers = end_sampler - start_sampler;
 165
 166    ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 167    if (!ureg)
 168        return NULL;
 169
 170    if (declare_input) {
 171       in[0] = ureg_DECL_fs_input(ureg,
 172                                  TGSI_SEMANTIC_POSITION,
 173                                  0,
 174                                  TGSI_INTERPOLATE_LINEAR);
 175       in[1] = ureg_DECL_fs_input(ureg,
 176                                  TGSI_SEMANTIC_GENERIC,
 177                                  0,
 178                                  TGSI_INTERPOLATE_PERSPECTIVE);
 179    }
 180
 181    /* we always have a color output */
 182    out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
 183
 184    if (num_consts >= 1) {
 185       constant = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_const);
 186       for (i = start_const; i < end_const; i++) {
 187          constant[i] = ureg_DECL_constant(ureg, i);
 188       }
 189
 190    }
 191
 192    if (num_temps >= 1) {
 193       temp = (struct ureg_dst *) malloc(sizeof(struct ureg_dst) * end_temp);
 194       for (i = start_temp; i < end_temp; i++) {
 195          temp[i] = ureg_DECL_temporary(ureg);
 196       }
 197    }
 198
 199    if (num_samplers >= 1) {
 200       sampler = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_sampler);
 201       for (i = start_sampler; i < end_sampler; i++) {
 202          sampler[i] = ureg_DECL_sampler(ureg, i);
 203       }
 204    }
 205
 206    while (current_shader < num_shaders) {
 207       if ((current_shader + 1) == num_shaders) {
 208          shaders[current_shader]->func(ureg,
 209                                        &out,
 210                                        in,
 211                                        sampler,
 212                                        temp,
 213                                        constant);
 214       } else {
 215          shaders[current_shader]->func(ureg,
 216                                       &temp[0],
 217                                       in,
 218                                       sampler,
 219                                       temp,
 220                                       constant);
 221       }
 222       current_shader++;
 223    }
 224
 225    ureg_END(ureg);
 226
 227    shader->tokens = ureg_finalize(ureg);
 228    if(!shader->tokens)
 229       return NULL;
 230
 231    p = pipe->create_fs_state(pipe, shader);
 232    ureg_destroy(ureg);
 233
 234    if (num_temps >= 1) {
 235       for (i = start_temp; i < end_temp; i++) {
 236          ureg_release_temporary(ureg, temp[i]);
 237       }
 238    }
 239
 240    if (temp)
 241       free(temp);
 242    if (constant)
 243       free(constant);
 244    if (sampler)
 245       free(sampler);
 246
 247    return p;
 248 }
 249
 250 static void *
 251 create_shader(struct pipe_context *pipe,
 252               int id,
 253               struct pipe_shader_state *shader)
 254 {
 255    int idx = 0, sh;
 256    const struct shader_asm_info * shaders[SHADER_STAGES];
 257
 258    /* first stage */
 259    sh = SHADERS_GET_PAINT_SHADER(id);
 260    switch (sh << SHADERS_PAINT_SHIFT) {
 261    case VEGA_SOLID_FILL_SHADER:
 262    case VEGA_LINEAR_GRADIENT_SHADER:
 263    case VEGA_RADIAL_GRADIENT_SHADER:
 264    case VEGA_PATTERN_SHADER:
 265    case VEGA_PAINT_DEGENERATE_SHADER:
 266       shaders[idx] = &shaders_paint_asm[(sh >> SHADERS_PAINT_SHIFT) - 1];
 267       assert(shaders[idx]->id == sh);
 268       idx++;
 269       break;
 270    default:
 271       break;
 272    }
 273
 274    /* second stage */
 275    sh = SHADERS_GET_IMAGE_SHADER(id);
 276    switch (sh) {
 277    case VEGA_IMAGE_NORMAL_SHADER:
 278    case VEGA_IMAGE_MULTIPLY_SHADER:
 279    case VEGA_IMAGE_STENCIL_SHADER:
 280       shaders[idx] = &shaders_image_asm[(sh >> SHADERS_IMAGE_SHIFT) - 1];
 281       assert(shaders[idx]->id == sh);
 282       idx++;
 283       break;
 284    default:
 285       break;
 286    }
 287
 288    /* sanity check */
 289    assert(idx == ((!sh || sh == VEGA_IMAGE_NORMAL_SHADER) ? 1 : 2));
 290
 291    /* third stage */
 292    sh = SHADERS_GET_COLOR_TRANSFORM_SHADER(id);
 293    switch (sh) {
 294    case VEGA_COLOR_TRANSFORM_SHADER:
 295       shaders[idx] = &shaders_color_transform_asm[
 296          (sh >> SHADERS_COLOR_TRANSFORM_SHIFT) - 1];
 297       assert(shaders[idx]->id == sh);
 298       idx++;
 299       break;
 300    default:
 301       break;
 302    }
 303
 304    /* fourth stage */
 305    sh = SHADERS_GET_ALPHA_SHADER(id);
 306    switch (sh) {
 307    case VEGA_ALPHA_NORMAL_SHADER:
 308    case VEGA_ALPHA_PER_CHANNEL_SHADER:
 309       shaders[idx] = &shaders_alpha_asm[
 310          (sh >> SHADERS_ALPHA_SHIFT) - 1];
 311       assert(shaders[idx]->id == sh);
 312       idx++;
 313       break;
 314    default:
 315       break;
 316    }
 317
 318    /* fifth stage */
 319    sh = SHADERS_GET_BLEND_SHADER(id);
 320    switch (sh) {
 321    case VEGA_BLEND_SRC_SHADER:
 322    case VEGA_BLEND_SRC_OVER_SHADER:
 323    case VEGA_BLEND_DST_OVER_SHADER:
 324    case VEGA_BLEND_SRC_IN_SHADER:
 325    case VEGA_BLEND_DST_IN_SHADER:
 326    case VEGA_BLEND_MULTIPLY_SHADER:
 327    case VEGA_BLEND_SCREEN_SHADER:
 328    case VEGA_BLEND_DARKEN_SHADER:
 329    case VEGA_BLEND_LIGHTEN_SHADER:
 330    case VEGA_BLEND_ADDITIVE_SHADER:
 331       shaders[idx] = &shaders_blend_asm[(sh >> SHADERS_BLEND_SHIFT) - 1];
 332       assert(shaders[idx]->id == sh);
 333       idx++;
 334       break;
 335    default:
 336       break;
 337    }
 338
 339    /* sixth stage */
 340    sh = SHADERS_GET_MASK_SHADER(id);
 341    switch (sh) {
 342    case VEGA_MASK_SHADER:
 343       shaders[idx] = &shaders_mask_asm[(sh >> SHADERS_MASK_SHIFT) - 1];
 344       assert(shaders[idx]->id == sh);
 345       idx++;
 346       break;
 347    default:
 348       break;
 349    }
 350
 351    /* seventh stage */
 352    sh = SHADERS_GET_PREMULTIPLY_SHADER(id);
 353    switch (sh) {
 354    case VEGA_PREMULTIPLY_SHADER:
 355    case VEGA_UNPREMULTIPLY_SHADER:
 356       shaders[idx] = &shaders_premultiply_asm[
 357          (sh >> SHADERS_PREMULTIPLY_SHIFT) - 1];
 358       assert(shaders[idx]->id == sh);
 359       idx++;
 360       break;
 361    default:
 362       break;
 363    }
 364
 365    /* eighth stage */
 366    sh = SHADERS_GET_BW_SHADER(id);
 367    switch (sh) {
 368    case VEGA_BW_SHADER:
 369       shaders[idx] = &shaders_bw_asm[(sh >> SHADERS_BW_SHIFT) - 1];
 370       assert(shaders[idx]->id == sh);
 371       idx++;
 372       break;
 373    default:
 374       break;
 375    }
 376
 377    return combine_shaders(shaders, idx, pipe, shader);
 378 }
 379
 380 /*************************************************/
 381
 382 struct shaders_cache * shaders_cache_create(struct vg_context *vg)
 383 {
 384    struct shaders_cache *sc = CALLOC_STRUCT(shaders_cache);
 385
 386    sc->pipe = vg;
 387    sc->hash = cso_hash_create();
 388
 389    return sc;
 390 }
 391
 392 void shaders_cache_destroy(struct shaders_cache *sc)
 393 {
 394    struct cso_hash_iter iter = cso_hash_first_node(sc->hash);
 395
 396    while (!cso_hash_iter_is_null(iter)) {
 397       struct cached_shader *cached =
 398          (struct cached_shader *)cso_hash_iter_data(iter);
 399       cso_delete_fragment_shader(sc->pipe->cso_context,
 400                                  cached->driver_shader);
 401       iter = cso_hash_erase(sc->hash, iter);
 402    }
 403
 404    cso_hash_delete(sc->hash);
 405    FREE(sc);
 406 }
 407
 408 void * shaders_cache_fill(struct shaders_cache *sc,
 409                           int shader_key)
 410 {
 411    VGint key = shader_key;
 412    struct cached_shader *cached;
 413    struct cso_hash_iter iter = cso_hash_find(sc->hash, key);
 414
 415    if (cso_hash_iter_is_null(iter)) {
 416       cached = CALLOC_STRUCT(cached_shader);
 417       cached->driver_shader = create_shader(sc->pipe->pipe, key, &cached->state);
 418
 419       cso_hash_insert(sc->hash, key, cached);
 420
 421       return cached->driver_shader;
 422    }
 423
 424    cached = (struct cached_shader *)cso_hash_iter_data(iter);
 425
 426    assert(cached->driver_shader);
 427    return cached->driver_shader;
 428 }
 429
 430 struct vg_shader * shader_create_from_text(struct pipe_context *pipe,
 431                                            const char *txt, int num_tokens,
 432                                            int type)
 433 {
 434    struct vg_shader *shader = (struct vg_shader *)MALLOC(
 435       sizeof(struct vg_shader));
 436    struct tgsi_token *tokens = tokens_from_assembly(txt, num_tokens);
 437    struct pipe_shader_state state;
 438
 439    debug_assert(type == PIPE_SHADER_VERTEX ||
 440                 type == PIPE_SHADER_FRAGMENT);
 441
 442    state.tokens = tokens;
 443    shader->type = type;
 444    shader->tokens = tokens;
 445
 446    if (type == PIPE_SHADER_FRAGMENT)
 447       shader->driver = pipe->create_fs_state(pipe, &state);
 448    else
 449       shader->driver = pipe->create_vs_state(pipe, &state);
 450    return shader;
 451 }
 452
 453 void vg_shader_destroy(struct vg_context *ctx, struct vg_shader *shader)
 454 {
 455    if (shader->type == PIPE_SHADER_FRAGMENT)
 456       cso_delete_fragment_shader(ctx->cso_context, shader->driver);
 457    else
 458       cso_delete_vertex_shader(ctx->cso_context, shader->driver);
 459    FREE(shader->tokens);
 460    FREE(shader);
 461 }