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) Extended blend (multiply/screen/darken/lighten)
  57  * 5) Mask
  58  * 6) Premultiply/Unpremultiply
  59  * 7) Color transform (to black and white)
  60  */
  61 #define SHADER_STAGES 7
  62
  63 struct cached_shader {
  64    void *driver_shader;
  65    struct pipe_shader_state state;
  66 };
  67
  68 struct shaders_cache {
  69    struct vg_context *pipe;
  70
  71    struct cso_hash *hash;
  72 };
  73
  74
  75 static INLINE struct tgsi_token *tokens_from_assembly(const char *txt, int num_tokens)
  76 {
  77    struct tgsi_token *tokens;
  78
  79    tokens = (struct tgsi_token *) MALLOC(num_tokens * sizeof(tokens[0]));
  80
  81    tgsi_text_translate(txt, tokens, num_tokens);
  82
  83 #if DEBUG_SHADERS
  84    tgsi_dump(tokens, 0);
  85 #endif
  86
  87    return tokens;
  88 }
  89
  90 /*
  91 static const char max_shader_preamble[] =
  92    "FRAG\n"
  93    "DCL IN[0], POSITION, LINEAR\n"
  94    "DCL IN[1], GENERIC[0], PERSPECTIVE\n"
  95    "DCL OUT[0], COLOR, CONSTANT\n"
  96    "DCL CONST[0..9], CONSTANT\n"
  97    "DCL TEMP[0..9], CONSTANT\n"
  98    "DCL SAMP[0..9], CONSTANT\n";
  99
 100    max_shader_preamble strlen == 175
 101 */
 102 #define MAX_PREAMBLE 175
 103
 104 static INLINE VGint range_min(VGint min, VGint current)
 105 {
 106    if (min < 0)
 107       min = current;
 108    else
 109       min = MIN2(min, current);
 110    return min;
 111 }
 112
 113 static INLINE VGint range_max(VGint max, VGint current)
 114 {
 115    return MAX2(max, current);
 116 }
 117
 118 static void *
 119 combine_shaders(const struct shader_asm_info *shaders[SHADER_STAGES], int num_shaders,
 120                 struct pipe_context *pipe,
 121                 struct pipe_shader_state *shader)
 122 {
 123    VGboolean declare_input = VG_FALSE;
 124    VGint start_const   = -1, end_const   = 0;
 125    VGint start_temp    = -1, end_temp    = 0;
 126    VGint start_sampler = -1, end_sampler = 0;
 127    VGint i, current_shader = 0;
 128    VGint num_consts, num_temps, num_samplers;
 129    struct ureg_program *ureg;
 130    struct ureg_src in[2];
 131    struct ureg_src *sampler = NULL;
 132    struct ureg_src *constant = NULL;
 133    struct ureg_dst out, *temp = NULL;
 134    void *p = NULL;
 135
 136    for (i = 0; i < num_shaders; ++i) {
 137       if (shaders[i]->num_consts)
 138          start_const = range_min(start_const, shaders[i]->start_const);
 139       if (shaders[i]->num_temps)
 140          start_temp = range_min(start_temp, shaders[i]->start_temp);
 141       if (shaders[i]->num_samplers)
 142          start_sampler = range_min(start_sampler, shaders[i]->start_sampler);
 143
 144       end_const = range_max(end_const, shaders[i]->start_const +
 145                             shaders[i]->num_consts);
 146       end_temp = range_max(end_temp, shaders[i]->start_temp +
 147                             shaders[i]->num_temps);
 148       end_sampler = range_max(end_sampler, shaders[i]->start_sampler +
 149                             shaders[i]->num_samplers);
 150       if (shaders[i]->needs_position)
 151          declare_input = VG_TRUE;
 152    }
 153    /* if they're still unitialized, initialize them */
 154    if (start_const < 0)
 155       start_const = 0;
 156    if (start_temp < 0)
 157       start_temp = 0;
 158    if (start_sampler < 0)
 159        start_sampler = 0;
 160
 161    num_consts   = end_const   - start_const;
 162    num_temps    = end_temp    - start_temp;
 163    num_samplers = end_sampler - start_sampler;
 164
 165    ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
 166    if (!ureg)
 167        return NULL;
 168
 169    if (declare_input) {
 170       in[0] = ureg_DECL_fs_input(ureg,
 171                                  TGSI_SEMANTIC_POSITION,
 172                                  0,
 173                                  TGSI_INTERPOLATE_LINEAR);
 174       in[1] = ureg_DECL_fs_input(ureg,
 175                                  TGSI_SEMANTIC_GENERIC,
 176                                  0,
 177                                  TGSI_INTERPOLATE_PERSPECTIVE);
 178    }
 179
 180    /* we always have a color output */
 181    out = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
 182
 183    if (num_consts >= 1) {
 184       constant = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_const);
 185       for (i = start_const; i < end_const; i++) {
 186          constant[i] = ureg_DECL_constant(ureg, i);
 187       }
 188
 189    }
 190
 191    if (num_temps >= 1) {
 192       temp = (struct ureg_dst *) malloc(sizeof(struct ureg_dst) * end_temp);
 193       for (i = start_temp; i < end_temp; i++) {
 194          temp[i] = ureg_DECL_temporary(ureg);
 195       }
 196    }
 197
 198    if (num_samplers >= 1) {
 199       sampler = (struct ureg_src *) malloc(sizeof(struct ureg_src) * end_sampler);
 200       for (i = start_sampler; i < end_sampler; i++) {
 201          sampler[i] = ureg_DECL_sampler(ureg, i);
 202       }
 203    }
 204
 205    while (current_shader < num_shaders) {
 206       if ((current_shader + 1) == num_shaders) {
 207          shaders[current_shader]->func(ureg,
 208                                        &out,
 209                                        in,
 210                                        sampler,
 211                                        temp,
 212                                        constant);
 213       } else {
 214          shaders[current_shader]->func(ureg,
 215                                       &temp[0],
 216                                       in,
 217                                       sampler,
 218                                       temp,
 219                                       constant);
 220       }
 221       current_shader++;
 222    }
 223
 224    ureg_END(ureg);
 225
 226    shader->tokens = ureg_finalize(ureg);
 227    if(!shader->tokens)
 228       return NULL;
 229
 230    p = pipe->create_fs_state(pipe, shader);
 231    ureg_destroy(ureg);
 232
 233    if (num_temps >= 1) {
 234       for (i = start_temp; i < end_temp; i++) {
 235          ureg_release_temporary(ureg, temp[i]);
 236       }
 237    }
 238
 239    if (temp)
 240       free(temp);
 241    if (constant)
 242       free(constant);
 243    if (sampler)
 244       free(sampler);
 245
 246    return p;
 247 }
 248
 249 static void *
 250 create_shader(struct pipe_context *pipe,
 251               int id,
 252               struct pipe_shader_state *shader)
 253 {
 254    int idx = 0, sh;
 255    const struct shader_asm_info * shaders[SHADER_STAGES];
 256
 257    /* first stage */
 258    sh = SHADERS_GET_PAINT_SHADER(id);
 259    switch (sh << SHADERS_PAINT_SHIFT) {
 260    case VEGA_SOLID_FILL_SHADER:
 261    case VEGA_LINEAR_GRADIENT_SHADER:
 262    case VEGA_RADIAL_GRADIENT_SHADER:
 263    case VEGA_PATTERN_SHADER:
 264    case VEGA_PAINT_DEGENERATE_SHADER:
 265       shaders[idx] = &shaders_paint_asm[(sh >> SHADERS_PAINT_SHIFT) - 1];
 266       assert(shaders[idx]->id == sh);
 267       idx++;
 268       break;
 269    default:
 270       break;
 271    }
 272
 273    /* second stage */
 274    sh = SHADERS_GET_IMAGE_SHADER(id);
 275    switch (sh) {
 276    case VEGA_IMAGE_NORMAL_SHADER:
 277    case VEGA_IMAGE_MULTIPLY_SHADER:
 278    case VEGA_IMAGE_STENCIL_SHADER:
 279       shaders[idx] = &shaders_image_asm[(sh >> SHADERS_IMAGE_SHIFT) - 1];
 280       assert(shaders[idx]->id == sh);
 281       idx++;
 282       break;
 283    default:
 284       break;
 285    }
 286
 287    /* sanity check */
 288    assert(idx == ((!sh || sh == VEGA_IMAGE_NORMAL_SHADER) ? 1 : 2));
 289
 290    /* third stage */
 291    sh = SHADERS_GET_COLOR_TRANSFORM_SHADER(id);
 292    switch (sh) {
 293    case VEGA_COLOR_TRANSFORM_SHADER:
 294       shaders[idx] = &shaders_color_transform_asm[
 295          (sh >> SHADERS_COLOR_TRANSFORM_SHIFT) - 1];
 296       assert(shaders[idx]->id == sh);
 297       idx++;
 298       break;
 299    default:
 300       break;
 301    }
 302
 303    /* fourth stage */
 304    sh = SHADERS_GET_BLEND_SHADER(id);
 305    switch (sh) {
 306    case VEGA_BLEND_MULTIPLY_SHADER:
 307    case VEGA_BLEND_SCREEN_SHADER:
 308    case VEGA_BLEND_DARKEN_SHADER:
 309    case VEGA_BLEND_LIGHTEN_SHADER:
 310       shaders[idx] = &shaders_blend_asm[(sh >> SHADERS_BLEND_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_MASK_SHADER(id);
 320    switch (sh) {
 321    case VEGA_MASK_SHADER:
 322       shaders[idx] = &shaders_mask_asm[(sh >> SHADERS_MASK_SHIFT) - 1];
 323       assert(shaders[idx]->id == sh);
 324       idx++;
 325       break;
 326    default:
 327       break;
 328    }
 329
 330    /* sixth stage */
 331    sh = SHADERS_GET_PREMULTIPLY_SHADER(id);
 332    switch (sh) {
 333    case VEGA_PREMULTIPLY_SHADER:
 334    case VEGA_UNPREMULTIPLY_SHADER:
 335       shaders[idx] = &shaders_premultiply_asm[
 336          (sh >> SHADERS_PREMULTIPLY_SHIFT) - 1];
 337       assert(shaders[idx]->id == sh);
 338       idx++;
 339       break;
 340    default:
 341       break;
 342    }
 343
 344    /* seventh stage */
 345    sh = SHADERS_GET_BW_SHADER(id);
 346    switch (sh) {
 347    case VEGA_BW_SHADER:
 348       shaders[idx] = &shaders_bw_asm[(sh >> SHADERS_BW_SHIFT) - 1];
 349       assert(shaders[idx]->id == sh);
 350       idx++;
 351       break;
 352    default:
 353       break;
 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 }