src/mesa/main/program_resource.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2015 Intel Corporation.  All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 #include "main/enums.h"
  27 #include "main/macros.h"
  28 #include "main/mtypes.h"
  29 #include "main/shaderapi.h"
  30 #include "main/shaderobj.h"
  31 #include "main/context.h"
  32 #include "program_resource.h"
  33 #include "compiler/glsl/ir_uniform.h"
  34 static bool
  35 supported_interface_enum(struct gl_context *ctx, GLenum iface)
  36 {
  37    switch (iface) {
  38    case GL_UNIFORM:
  39    case GL_UNIFORM_BLOCK:
  40    case GL_PROGRAM_INPUT:
  41    case GL_PROGRAM_OUTPUT:
  42    case GL_TRANSFORM_FEEDBACK_BUFFER:
  43    case GL_TRANSFORM_FEEDBACK_VARYING:
  44    case GL_ATOMIC_COUNTER_BUFFER:
  45    case GL_BUFFER_VARIABLE:
  46    case GL_SHADER_STORAGE_BLOCK:
  47       return true;
  48    case GL_VERTEX_SUBROUTINE:
  49    case GL_FRAGMENT_SUBROUTINE:
  50    case GL_VERTEX_SUBROUTINE_UNIFORM:
  51    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
  52       return _mesa_has_shader_subroutine(ctx);
  53    case GL_GEOMETRY_SUBROUTINE:
  54    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
  55       return _mesa_has_geometry_shaders(ctx) && _mesa_has_shader_subroutine(ctx);
  56    case GL_COMPUTE_SUBROUTINE:
  57    case GL_COMPUTE_SUBROUTINE_UNIFORM:
  58       return _mesa_has_compute_shaders(ctx) && _mesa_has_shader_subroutine(ctx);
  59    case GL_TESS_CONTROL_SUBROUTINE:
  60    case GL_TESS_EVALUATION_SUBROUTINE:
  61    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
  62    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
  63       return _mesa_has_tessellation(ctx) && _mesa_has_shader_subroutine(ctx);
  64    default:
  65       return false;
  66    }
  67 }
  68
  69 void GLAPIENTRY
  70 _mesa_GetProgramInterfaceiv(GLuint program, GLenum programInterface,
  71                             GLenum pname, GLint *params)
  72 {
  73    GET_CURRENT_CONTEXT(ctx);
  74
  75    if (MESA_VERBOSE & VERBOSE_API) {
  76       _mesa_debug(ctx, "glGetProgramInterfaceiv(%u, %s, %s, %p)\n",
  77                   program, _mesa_enum_to_string(programInterface),
  78                   _mesa_enum_to_string(pname), params);
  79    }
  80
  81    unsigned i;
  82    struct gl_shader_program *shProg =
  83       _mesa_lookup_shader_program_err(ctx, program,
  84                                       "glGetProgramInterfaceiv");
  85    if (!shProg)
  86       return;
  87
  88    if (!params) {
  89       _mesa_error(ctx, GL_INVALID_OPERATION,
  90                   "glGetProgramInterfaceiv(params NULL)");
  91       return;
  92    }
  93
  94    /* Validate interface. */
  95    if (!supported_interface_enum(ctx, programInterface)) {
  96       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramInterfaceiv(%s)",
  97                   _mesa_enum_to_string(programInterface));
  98       return;
  99    }
 100
 101    /* Validate pname against interface. */
 102    switch(pname) {
 103    case GL_ACTIVE_RESOURCES:
 104       for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++)
 105          if (shProg->ProgramResourceList[i].Type == programInterface)
 106             (*params)++;
 107       break;
 108    case GL_MAX_NAME_LENGTH:
 109       if (programInterface == GL_ATOMIC_COUNTER_BUFFER ||
 110           programInterface == GL_TRANSFORM_FEEDBACK_BUFFER) {
 111          _mesa_error(ctx, GL_INVALID_OPERATION,
 112                      "glGetProgramInterfaceiv(%s pname %s)",
 113                      _mesa_enum_to_string(programInterface),
 114                      _mesa_enum_to_string(pname));
 115          return;
 116       }
 117       /* Name length consists of base name, 3 additional chars '[0]' if
 118        * resource is an array and finally 1 char for string terminator.
 119        */
 120       for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 121          if (shProg->ProgramResourceList[i].Type != programInterface)
 122             continue;
 123          unsigned len =
 124             _mesa_program_resource_name_len(&shProg->ProgramResourceList[i]);
 125          *params = MAX2(*params, len + 1);
 126       }
 127       break;
 128    case GL_MAX_NUM_ACTIVE_VARIABLES:
 129       switch (programInterface) {
 130       case GL_UNIFORM_BLOCK:
 131          for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 132             if (shProg->ProgramResourceList[i].Type == programInterface) {
 133                struct gl_uniform_block *block =
 134                   (struct gl_uniform_block *)
 135                   shProg->ProgramResourceList[i].Data;
 136                *params = MAX2(*params, block->NumUniforms);
 137             }
 138          }
 139          break;
 140       case GL_SHADER_STORAGE_BLOCK:
 141          for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 142             if (shProg->ProgramResourceList[i].Type == programInterface) {
 143                struct gl_uniform_block *block =
 144                   (struct gl_uniform_block *)
 145                   shProg->ProgramResourceList[i].Data;
 146                GLint block_params = 0;
 147                for (unsigned j = 0; j < block->NumUniforms; j++) {
 148                   const char *iname = block->Uniforms[j].IndexName;
 149                   struct gl_program_resource *uni =
 150                      _mesa_program_resource_find_name(shProg, GL_BUFFER_VARIABLE,
 151                                                       iname, NULL);
 152                   if (!uni)
 153                      continue;
 154                   block_params++;
 155                }
 156                *params = MAX2(*params, block_params);
 157             }
 158          }
 159          break;
 160       case GL_ATOMIC_COUNTER_BUFFER:
 161          for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 162             if (shProg->ProgramResourceList[i].Type == programInterface) {
 163                struct gl_active_atomic_buffer *buffer =
 164                   (struct gl_active_atomic_buffer *)
 165                   shProg->ProgramResourceList[i].Data;
 166                *params = MAX2(*params, buffer->NumUniforms);
 167             }
 168          }
 169          break;
 170       case GL_TRANSFORM_FEEDBACK_BUFFER:
 171          for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 172             if (shProg->ProgramResourceList[i].Type == programInterface) {
 173                struct gl_transform_feedback_buffer *buffer =
 174                   (struct gl_transform_feedback_buffer *)
 175                   shProg->ProgramResourceList[i].Data;
 176                *params = MAX2(*params, buffer->NumVaryings);
 177             }
 178          }
 179          break;
 180       default:
 181         _mesa_error(ctx, GL_INVALID_OPERATION,
 182                     "glGetProgramInterfaceiv(%s pname %s)",
 183                     _mesa_enum_to_string(programInterface),
 184                     _mesa_enum_to_string(pname));
 185       };
 186       break;
 187    case GL_MAX_NUM_COMPATIBLE_SUBROUTINES:
 188       switch (programInterface) {
 189       case GL_VERTEX_SUBROUTINE_UNIFORM:
 190       case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 191       case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 192       case GL_COMPUTE_SUBROUTINE_UNIFORM:
 193       case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 194       case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM: {
 195          for (i = 0, *params = 0; i < shProg->NumProgramResourceList; i++) {
 196             if (shProg->ProgramResourceList[i].Type == programInterface) {
 197                struct gl_uniform_storage *uni =
 198                   (struct gl_uniform_storage *)
 199                   shProg->ProgramResourceList[i].Data;
 200                *params = MAX2(*params, uni->num_compatible_subroutines);
 201             }
 202          }
 203          break;
 204       }
 205
 206       default:
 207          _mesa_error(ctx, GL_INVALID_OPERATION,
 208                      "glGetProgramInterfaceiv(%s pname %s)",
 209                      _mesa_enum_to_string(programInterface),
 210                      _mesa_enum_to_string(pname));
 211       }
 212       break;
 213    default:
 214       _mesa_error(ctx, GL_INVALID_OPERATION,
 215                   "glGetProgramInterfaceiv(pname %s)",
 216                   _mesa_enum_to_string(pname));
 217    }
 218 }
 219
 220 static bool
 221 is_xfb_marker(const char *str)
 222 {
 223    static const char *markers[] = {
 224       "gl_NextBuffer",
 225       "gl_SkipComponents1",
 226       "gl_SkipComponents2",
 227       "gl_SkipComponents3",
 228       "gl_SkipComponents4",
 229       NULL
 230    };
 231    const char **m = markers;
 232
 233    if (strncmp(str, "gl_", 3) != 0)
 234       return false;
 235
 236    for (; *m; m++)
 237       if (strcmp(*m, str) == 0)
 238          return true;
 239
 240    return false;
 241 }
 242
 243 GLuint GLAPIENTRY
 244 _mesa_GetProgramResourceIndex(GLuint program, GLenum programInterface,
 245                               const GLchar *name)
 246 {
 247    GET_CURRENT_CONTEXT(ctx);
 248
 249    if (MESA_VERBOSE & VERBOSE_API) {
 250       _mesa_debug(ctx, "glGetProgramResourceIndex(%u, %s, %s)\n",
 251                   program, _mesa_enum_to_string(programInterface), name);
 252    }
 253
 254    unsigned array_index = 0;
 255    struct gl_program_resource *res;
 256    struct gl_shader_program *shProg =
 257       _mesa_lookup_shader_program_err(ctx, program,
 258                                       "glGetProgramResourceIndex");
 259    if (!shProg || !name)
 260       return GL_INVALID_INDEX;
 261
 262    if (!supported_interface_enum(ctx, programInterface)) {
 263       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramResourceIndex(%s)",
 264                   _mesa_enum_to_string(programInterface));
 265       return GL_INVALID_INDEX;
 266    }
 267    /*
 268     * For the interface TRANSFORM_FEEDBACK_VARYING, the value INVALID_INDEX
 269     * should be returned when querying the index assigned to the special names
 270     * "gl_NextBuffer", "gl_SkipComponents1", "gl_SkipComponents2",
 271     * "gl_SkipComponents3", and "gl_SkipComponents4".
 272     */
 273    if (programInterface == GL_TRANSFORM_FEEDBACK_VARYING &&
 274        is_xfb_marker(name))
 275       return GL_INVALID_INDEX;
 276
 277    switch (programInterface) {
 278    case GL_TESS_CONTROL_SUBROUTINE:
 279    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 280    case GL_TESS_EVALUATION_SUBROUTINE:
 281    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 282    case GL_COMPUTE_SUBROUTINE:
 283    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 284    case GL_GEOMETRY_SUBROUTINE:
 285    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 286    case GL_VERTEX_SUBROUTINE:
 287    case GL_FRAGMENT_SUBROUTINE:
 288    case GL_VERTEX_SUBROUTINE_UNIFORM:
 289    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 290    case GL_PROGRAM_INPUT:
 291    case GL_PROGRAM_OUTPUT:
 292    case GL_UNIFORM:
 293    case GL_BUFFER_VARIABLE:
 294    case GL_TRANSFORM_FEEDBACK_VARYING:
 295    case GL_UNIFORM_BLOCK:
 296    case GL_SHADER_STORAGE_BLOCK:
 297       res = _mesa_program_resource_find_name(shProg, programInterface, name,
 298                                              &array_index);
 299       if (!res || array_index > 0)
 300          return GL_INVALID_INDEX;
 301
 302       return _mesa_program_resource_index(shProg, res);
 303    case GL_ATOMIC_COUNTER_BUFFER:
 304    case GL_TRANSFORM_FEEDBACK_BUFFER:
 305    default:
 306       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramResourceIndex(%s)",
 307                   _mesa_enum_to_string(programInterface));
 308    }
 309
 310    return GL_INVALID_INDEX;
 311 }
 312
 313 void GLAPIENTRY
 314 _mesa_GetProgramResourceName(GLuint program, GLenum programInterface,
 315                              GLuint index, GLsizei bufSize, GLsizei *length,
 316                              GLchar *name)
 317 {
 318    GET_CURRENT_CONTEXT(ctx);
 319
 320    if (MESA_VERBOSE & VERBOSE_API) {
 321       _mesa_debug(ctx, "glGetProgramResourceName(%u, %s, %u, %d, %p, %p)\n",
 322                   program, _mesa_enum_to_string(programInterface), index,
 323                   bufSize, length, name);
 324    }
 325
 326    struct gl_shader_program *shProg =
 327       _mesa_lookup_shader_program_err(ctx, program,
 328                                       "glGetProgramResourceName");
 329
 330    if (!shProg || !name)
 331       return;
 332
 333    if (programInterface == GL_ATOMIC_COUNTER_BUFFER ||
 334        programInterface == GL_TRANSFORM_FEEDBACK_BUFFER ||
 335        !supported_interface_enum(ctx, programInterface)) {
 336       _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramResourceName(%s)",
 337                   _mesa_enum_to_string(programInterface));
 338       return;
 339    }
 340
 341    _mesa_get_program_resource_name(shProg, programInterface, index, bufSize,
 342                                    length, name, "glGetProgramResourceName");
 343 }
 344
 345 void GLAPIENTRY
 346 _mesa_GetProgramResourceiv(GLuint program, GLenum programInterface,
 347                            GLuint index, GLsizei propCount,
 348                            const GLenum *props, GLsizei bufSize,
 349                            GLsizei *length, GLint *params)
 350 {
 351    GET_CURRENT_CONTEXT(ctx);
 352
 353    if (MESA_VERBOSE & VERBOSE_API) {
 354       _mesa_debug(ctx, "glGetProgramResourceiv(%u, %s, %u, %d, %p, %d, %p, %p)\n",
 355                   program, _mesa_enum_to_string(programInterface), index,
 356                   propCount, props, bufSize, length, params);
 357    }
 358
 359    struct gl_shader_program *shProg =
 360       _mesa_lookup_shader_program_err(ctx, program, "glGetProgramResourceiv");
 361
 362    if (!shProg || !params)
 363       return;
 364
 365    /* The error INVALID_VALUE is generated if <propCount> is zero.
 366     * Note that we check < 0 here because it makes sense to bail early.
 367     */
 368    if (propCount <= 0) {
 369       _mesa_error(ctx, GL_INVALID_VALUE,
 370                   "glGetProgramResourceiv(propCount <= 0)");
 371       return;
 372    }
 373
 374    _mesa_get_program_resourceiv(shProg, programInterface, index,
 375                                 propCount, props, bufSize, length, params);
 376 }
 377
 378 static struct gl_shader_program *
 379 lookup_linked_program(GLuint program, const char *caller)
 380 {
 381    GET_CURRENT_CONTEXT(ctx);
 382    struct gl_shader_program *prog =
 383       _mesa_lookup_shader_program_err(ctx, program, caller);
 384
 385    if (!prog)
 386       return NULL;
 387
 388    if (prog->LinkStatus == GL_FALSE) {
 389       _mesa_error(ctx, GL_INVALID_OPERATION, "%s(program not linked)",
 390                   caller);
 391       return NULL;
 392    }
 393    return prog;
 394 }
 395
 396 GLint GLAPIENTRY
 397 _mesa_GetProgramResourceLocation(GLuint program, GLenum programInterface,
 398                                  const GLchar *name)
 399 {
 400    GET_CURRENT_CONTEXT(ctx);
 401
 402    if (MESA_VERBOSE & VERBOSE_API) {
 403       _mesa_debug(ctx, "glGetProgramResourceLocation(%u, %s, %s)\n",
 404                   program, _mesa_enum_to_string(programInterface), name);
 405    }
 406
 407    struct gl_shader_program *shProg =
 408       lookup_linked_program(program, "glGetProgramResourceLocation");
 409
 410    if (!shProg || !name)
 411       return -1;
 412
 413    /* Validate programInterface. */
 414    switch (programInterface) {
 415    case GL_UNIFORM:
 416    case GL_PROGRAM_INPUT:
 417    case GL_PROGRAM_OUTPUT:
 418       break;
 419
 420    case GL_VERTEX_SUBROUTINE_UNIFORM:
 421    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 422       if (!_mesa_has_shader_subroutine(ctx))
 423          goto fail;
 424       break;
 425    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 426       if (!_mesa_has_geometry_shaders(ctx) || !_mesa_has_shader_subroutine(ctx))
 427          goto fail;
 428       break;
 429    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 430       if (!_mesa_has_compute_shaders(ctx) || !_mesa_has_shader_subroutine(ctx))
 431          goto fail;
 432       break;
 433    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 434    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 435       if (!_mesa_has_tessellation(ctx) || !_mesa_has_shader_subroutine(ctx))
 436          goto fail;
 437       break;
 438    default:
 439          goto fail;
 440    }
 441
 442    return _mesa_program_resource_location(shProg, programInterface, name);
 443 fail:
 444    _mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramResourceLocation(%s %s)",
 445                _mesa_enum_to_string(programInterface), name);
 446    return -1;
 447 }
 448
 449 /**
 450  * Returns output index for dual source blending.
 451  */
 452 GLint GLAPIENTRY
 453 _mesa_GetProgramResourceLocationIndex(GLuint program, GLenum programInterface,
 454                                       const GLchar *name)
 455 {
 456    GET_CURRENT_CONTEXT(ctx);
 457
 458    if (MESA_VERBOSE & VERBOSE_API) {
 459       _mesa_debug(ctx, "glGetProgramResourceLocationIndex(%u, %s, %s)\n",
 460                   program, _mesa_enum_to_string(programInterface), name);
 461    }
 462
 463    struct gl_shader_program *shProg =
 464       lookup_linked_program(program, "glGetProgramResourceLocationIndex");
 465
 466    if (!shProg || !name)
 467       return -1;
 468
 469    /* From the GL_ARB_program_interface_query spec:
 470     *
 471     * "For GetProgramResourceLocationIndex, <programInterface> must be
 472     * PROGRAM_OUTPUT."
 473     */
 474    if (programInterface != GL_PROGRAM_OUTPUT) {
 475       _mesa_error(ctx, GL_INVALID_ENUM,
 476                   "glGetProgramResourceLocationIndex(%s)",
 477                   _mesa_enum_to_string(programInterface));
 478       return -1;
 479    }
 480
 481    return _mesa_program_resource_location_index(shProg, GL_PROGRAM_OUTPUT,
 482                                                 name);
 483 }