src/mesa/state_tracker/st_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * 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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "util/imports.h"
  29 #include "main/accum.h"
  30 #include "main/api_exec.h"
  31 #include "main/context.h"
  32 #include "main/glthread.h"
  33 #include "main/samplerobj.h"
  34 #include "main/shaderobj.h"
  35 #include "main/version.h"
  36 #include "main/vtxfmt.h"
  37 #include "main/hash.h"
  38 #include "program/prog_cache.h"
  39 #include "vbo/vbo.h"
  40 #include "glapi/glapi.h"
  41 #include "st_manager.h"
  42 #include "st_context.h"
  43 #include "st_debug.h"
  44 #include "st_cb_bitmap.h"
  45 #include "st_cb_blit.h"
  46 #include "st_cb_bufferobjects.h"
  47 #include "st_cb_clear.h"
  48 #include "st_cb_compute.h"
  49 #include "st_cb_condrender.h"
  50 #include "st_cb_copyimage.h"
  51 #include "st_cb_drawpixels.h"
  52 #include "st_cb_rasterpos.h"
  53 #include "st_cb_drawtex.h"
  54 #include "st_cb_eglimage.h"
  55 #include "st_cb_fbo.h"
  56 #include "st_cb_feedback.h"
  57 #include "st_cb_memoryobjects.h"
  58 #include "st_cb_msaa.h"
  59 #include "st_cb_perfmon.h"
  60 #include "st_cb_perfquery.h"
  61 #include "st_cb_program.h"
  62 #include "st_cb_queryobj.h"
  63 #include "st_cb_readpixels.h"
  64 #include "st_cb_semaphoreobjects.h"
  65 #include "st_cb_texture.h"
  66 #include "st_cb_xformfb.h"
  67 #include "st_cb_flush.h"
  68 #include "st_cb_syncobj.h"
  69 #include "st_cb_strings.h"
  70 #include "st_cb_texturebarrier.h"
  71 #include "st_cb_viewport.h"
  72 #include "st_atom.h"
  73 #include "st_draw.h"
  74 #include "st_extensions.h"
  75 #include "st_gen_mipmap.h"
  76 #include "st_pbo.h"
  77 #include "st_program.h"
  78 #include "st_sampler_view.h"
  79 #include "st_shader_cache.h"
  80 #include "st_vdpau.h"
  81 #include "st_texture.h"
  82 #include "st_util.h"
  83 #include "pipe/p_context.h"
  84 #include "util/u_cpu_detect.h"
  85 #include "util/u_inlines.h"
  86 #include "util/u_upload_mgr.h"
  87 #include "util/u_vbuf.h"
  88 #include "cso_cache/cso_context.h"
  89 #include "compiler/glsl/glsl_parser_extras.h"
  90
  91
  92 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  93
  94
  95 /**
  96  * Called via ctx->Driver.Enable()
  97  */
  98 static void
  99 st_Enable(struct gl_context *ctx, GLenum cap, GLboolean state)
 100 {
 101    struct st_context *st = st_context(ctx);
 102
 103    switch (cap) {
 104    case GL_DEBUG_OUTPUT:
 105    case GL_DEBUG_OUTPUT_SYNCHRONOUS:
 106       st_update_debug_callback(st);
 107       break;
 108    case GL_BLACKHOLE_RENDER_INTEL:
 109       st->pipe->set_frontend_noop(st->pipe, ctx->IntelBlackholeRender);
 110       break;
 111    default:
 112       break;
 113    }
 114 }
 115
 116
 117 /**
 118  * Called via ctx->Driver.QueryMemoryInfo()
 119  */
 120 static void
 121 st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
 122 {
 123    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 124    struct pipe_memory_info info;
 125
 126    assert(screen->query_memory_info);
 127    if (!screen->query_memory_info)
 128       return;
 129
 130    screen->query_memory_info(screen, &info);
 131
 132    out->total_device_memory = info.total_device_memory;
 133    out->avail_device_memory = info.avail_device_memory;
 134    out->total_staging_memory = info.total_staging_memory;
 135    out->avail_staging_memory = info.avail_staging_memory;
 136    out->device_memory_evicted = info.device_memory_evicted;
 137    out->nr_device_memory_evictions = info.nr_device_memory_evictions;
 138 }
 139
 140
 141 static uint64_t
 142 st_get_active_states(struct gl_context *ctx)
 143 {
 144    struct st_program *vp =
 145       st_program(ctx->VertexProgram._Current);
 146    struct st_program *tcp =
 147       st_program(ctx->TessCtrlProgram._Current);
 148    struct st_program *tep =
 149       st_program(ctx->TessEvalProgram._Current);
 150    struct st_program *gp =
 151       st_program(ctx->GeometryProgram._Current);
 152    struct st_program *fp =
 153       st_program(ctx->FragmentProgram._Current);
 154    struct st_program *cp =
 155       st_program(ctx->ComputeProgram._Current);
 156    uint64_t active_shader_states = 0;
 157
 158    if (vp)
 159       active_shader_states |= vp->affected_states;
 160    if (tcp)
 161       active_shader_states |= tcp->affected_states;
 162    if (tep)
 163       active_shader_states |= tep->affected_states;
 164    if (gp)
 165       active_shader_states |= gp->affected_states;
 166    if (fp)
 167       active_shader_states |= fp->affected_states;
 168    if (cp)
 169       active_shader_states |= cp->affected_states;
 170
 171    /* Mark non-shader-resource shader states as "always active". */
 172    return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
 173 }
 174
 175
 176 void
 177 st_invalidate_buffers(struct st_context *st)
 178 {
 179    st->dirty |= ST_NEW_BLEND |
 180                 ST_NEW_DSA |
 181                 ST_NEW_FB_STATE |
 182                 ST_NEW_SAMPLE_STATE |
 183                 ST_NEW_SAMPLE_SHADING |
 184                 ST_NEW_FS_STATE |
 185                 ST_NEW_POLY_STIPPLE |
 186                 ST_NEW_VIEWPORT |
 187                 ST_NEW_RASTERIZER |
 188                 ST_NEW_SCISSOR |
 189                 ST_NEW_WINDOW_RECTANGLES;
 190 }
 191
 192
 193 static inline bool
 194 st_vp_uses_current_values(const struct gl_context *ctx)
 195 {
 196    const uint64_t inputs = ctx->VertexProgram._Current->info.inputs_read;
 197    return _mesa_draw_current_bits(ctx) & inputs;
 198 }
 199
 200
 201 /**
 202  * Called via ctx->Driver.UpdateState()
 203  */
 204 static void
 205 st_invalidate_state(struct gl_context *ctx)
 206 {
 207    GLbitfield new_state = ctx->NewState;
 208    struct st_context *st = st_context(ctx);
 209
 210    if (new_state & _NEW_BUFFERS) {
 211       st_invalidate_buffers(st);
 212    } else {
 213       /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
 214        * check them when _NEW_BUFFERS isn't set.
 215        */
 216       if (new_state & _NEW_PROGRAM)
 217          st->dirty |= ST_NEW_RASTERIZER;
 218
 219       if (new_state & _NEW_FOG)
 220          st->dirty |= ST_NEW_FS_STATE;
 221
 222       if (new_state & _NEW_FRAG_CLAMP) {
 223          if (st->clamp_frag_color_in_shader)
 224             st->dirty |= ST_NEW_FS_STATE;
 225          else
 226             st->dirty |= ST_NEW_RASTERIZER;
 227       }
 228    }
 229
 230    if (new_state & (_NEW_LIGHT |
 231                     _NEW_POINT))
 232       st->dirty |= ST_NEW_RASTERIZER;
 233
 234    if ((new_state & _NEW_LIGHT) &&
 235        (st->lower_flatshade || st->lower_two_sided_color))
 236       st->dirty |= ST_NEW_FS_STATE;
 237
 238    if (new_state & _NEW_PROJECTION &&
 239        st_user_clip_planes_enabled(ctx))
 240       st->dirty |= ST_NEW_CLIP_STATE;
 241
 242    if (new_state & _NEW_PIXEL)
 243       st->dirty |= ST_NEW_PIXEL_TRANSFER;
 244
 245    if (new_state & _NEW_CURRENT_ATTRIB && st_vp_uses_current_values(ctx))
 246       st->dirty |= ST_NEW_VERTEX_ARRAYS;
 247
 248    if (st->clamp_frag_depth_in_shader && (new_state & _NEW_VIEWPORT)) {
 249       if (ctx->GeometryProgram._Current)
 250          st->dirty |= ST_NEW_GS_CONSTANTS;
 251       else if (ctx->TessEvalProgram._Current)
 252          st->dirty |= ST_NEW_TES_CONSTANTS;
 253       else
 254          st->dirty |= ST_NEW_VS_CONSTANTS;
 255       st->dirty |= ST_NEW_FS_CONSTANTS;
 256    }
 257
 258    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 259    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
 260       st->dirty |= ST_NEW_VS_STATE;
 261       if (st->ctx->API == API_OPENGL_COMPAT && ctx->Version >= 32) {
 262          st->dirty |= ST_NEW_GS_STATE | ST_NEW_TES_STATE;
 263       }
 264    }
 265
 266    /* Which shaders are dirty will be determined manually. */
 267    if (new_state & _NEW_PROGRAM) {
 268       st->gfx_shaders_may_be_dirty = true;
 269       st->compute_shader_may_be_dirty = true;
 270       /* This will mask out unused shader resources. */
 271       st->active_states = st_get_active_states(ctx);
 272    }
 273
 274    if (new_state & _NEW_TEXTURE_OBJECT) {
 275       st->dirty |= st->active_states &
 276                    (ST_NEW_SAMPLER_VIEWS |
 277                     ST_NEW_SAMPLERS |
 278                     ST_NEW_IMAGE_UNITS);
 279       if (ctx->FragmentProgram._Current &&
 280           ctx->FragmentProgram._Current->ExternalSamplersUsed) {
 281          st->dirty |= ST_NEW_FS_STATE;
 282       }
 283    }
 284 }
 285
 286
 287 /*
 288  * In some circumstances (such as running google-chrome) the state
 289  * tracker may try to delete a resource view from a context different
 290  * than when it was created.  We don't want to do that.
 291  *
 292  * In that situation, st_texture_release_all_sampler_views() calls this
 293  * function to transfer the sampler view reference to this context (expected
 294  * to be the context which created the view.)
 295  */
 296 void
 297 st_save_zombie_sampler_view(struct st_context *st,
 298                             struct pipe_sampler_view *view)
 299 {
 300    struct st_zombie_sampler_view_node *entry;
 301
 302    assert(view->context == st->pipe);
 303
 304    entry = MALLOC_STRUCT(st_zombie_sampler_view_node);
 305    if (!entry)
 306       return;
 307
 308    entry->view = view;
 309
 310    /* We need a mutex since this function may be called from one thread
 311     * while free_zombie_resource_views() is called from another.
 312     */
 313    simple_mtx_lock(&st->zombie_sampler_views.mutex);
 314    list_addtail(&entry->node, &st->zombie_sampler_views.list.node);
 315    simple_mtx_unlock(&st->zombie_sampler_views.mutex);
 316 }
 317
 318
 319 /*
 320  * Since OpenGL shaders may be shared among contexts, we can wind up
 321  * with variants of a shader created with different contexts.
 322  * When we go to destroy a gallium shader, we want to free it with the
 323  * same context that it was created with, unless the driver reports
 324  * PIPE_CAP_SHAREABLE_SHADERS = TRUE.
 325  */
 326 void
 327 st_save_zombie_shader(struct st_context *st,
 328                       enum pipe_shader_type type,
 329                       struct pipe_shader_state *shader)
 330 {
 331    struct st_zombie_shader_node *entry;
 332
 333    /* we shouldn't be here if the driver supports shareable shaders */
 334    assert(!st->has_shareable_shaders);
 335
 336    entry = MALLOC_STRUCT(st_zombie_shader_node);
 337    if (!entry)
 338       return;
 339
 340    entry->shader = shader;
 341    entry->type = type;
 342
 343    /* We need a mutex since this function may be called from one thread
 344     * while free_zombie_shaders() is called from another.
 345     */
 346    simple_mtx_lock(&st->zombie_shaders.mutex);
 347    list_addtail(&entry->node, &st->zombie_shaders.list.node);
 348    simple_mtx_unlock(&st->zombie_shaders.mutex);
 349 }
 350
 351
 352 /*
 353  * Free any zombie sampler views that may be attached to this context.
 354  */
 355 static void
 356 free_zombie_sampler_views(struct st_context *st)
 357 {
 358    struct st_zombie_sampler_view_node *entry, *next;
 359
 360    if (list_is_empty(&st->zombie_sampler_views.list.node)) {
 361       return;
 362    }
 363
 364    simple_mtx_lock(&st->zombie_sampler_views.mutex);
 365
 366    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 367                             &st->zombie_sampler_views.list.node, node) {
 368       list_del(&entry->node);  // remove this entry from the list
 369
 370       assert(entry->view->context == st->pipe);
 371       pipe_sampler_view_reference(&entry->view, NULL);
 372
 373       free(entry);
 374    }
 375
 376    assert(list_is_empty(&st->zombie_sampler_views.list.node));
 377
 378    simple_mtx_unlock(&st->zombie_sampler_views.mutex);
 379 }
 380
 381
 382 /*
 383  * Free any zombie shaders that may be attached to this context.
 384  */
 385 static void
 386 free_zombie_shaders(struct st_context *st)
 387 {
 388    struct st_zombie_shader_node *entry, *next;
 389
 390    if (list_is_empty(&st->zombie_shaders.list.node)) {
 391       return;
 392    }
 393
 394    simple_mtx_lock(&st->zombie_shaders.mutex);
 395
 396    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 397                             &st->zombie_shaders.list.node, node) {
 398       list_del(&entry->node);  // remove this entry from the list
 399
 400       switch (entry->type) {
 401       case PIPE_SHADER_VERTEX:
 402          st->pipe->delete_vs_state(st->pipe, entry->shader);
 403          break;
 404       case PIPE_SHADER_FRAGMENT:
 405          st->pipe->delete_fs_state(st->pipe, entry->shader);
 406          break;
 407       case PIPE_SHADER_GEOMETRY:
 408          st->pipe->delete_gs_state(st->pipe, entry->shader);
 409          break;
 410       case PIPE_SHADER_TESS_CTRL:
 411          st->pipe->delete_tcs_state(st->pipe, entry->shader);
 412          break;
 413       case PIPE_SHADER_TESS_EVAL:
 414          st->pipe->delete_tes_state(st->pipe, entry->shader);
 415          break;
 416       case PIPE_SHADER_COMPUTE:
 417          st->pipe->delete_compute_state(st->pipe, entry->shader);
 418          break;
 419       default:
 420          unreachable("invalid shader type in free_zombie_shaders()");
 421       }
 422       free(entry);
 423    }
 424
 425    assert(list_is_empty(&st->zombie_shaders.list.node));
 426
 427    simple_mtx_unlock(&st->zombie_shaders.mutex);
 428 }
 429
 430
 431 /*
 432  * This function is called periodically to free any zombie objects
 433  * which are attached to this context.
 434  */
 435 void
 436 st_context_free_zombie_objects(struct st_context *st)
 437 {
 438    free_zombie_sampler_views(st);
 439    free_zombie_shaders(st);
 440 }
 441
 442
 443 static void
 444 st_destroy_context_priv(struct st_context *st, bool destroy_pipe)
 445 {
 446    uint i;
 447
 448    st_destroy_atoms(st);
 449    st_destroy_draw(st);
 450    st_destroy_clear(st);
 451    st_destroy_bitmap(st);
 452    st_destroy_drawpix(st);
 453    st_destroy_drawtex(st);
 454    st_destroy_perfmon(st);
 455    st_destroy_pbo_helpers(st);
 456    st_destroy_bound_texture_handles(st);
 457    st_destroy_bound_image_handles(st);
 458
 459    for (i = 0; i < ARRAY_SIZE(st->state.frag_sampler_views); i++) {
 460       pipe_sampler_view_reference(&st->state.vert_sampler_views[i], NULL);
 461       pipe_sampler_view_reference(&st->state.frag_sampler_views[i], NULL);
 462    }
 463
 464    /* free glReadPixels cache data */
 465    st_invalidate_readpix_cache(st);
 466    util_throttle_deinit(st->pipe->screen, &st->throttle);
 467
 468    cso_destroy_context(st->cso_context);
 469
 470    if (st->pipe && destroy_pipe)
 471       st->pipe->destroy(st->pipe);
 472
 473    free(st);
 474 }
 475
 476
 477 static void
 478 st_init_driver_flags(struct st_context *st)
 479 {
 480    struct gl_driver_flags *f = &st->ctx->DriverFlags;
 481
 482    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 483    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 484    f->NewTileRasterOrder = ST_NEW_RASTERIZER;
 485    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 486    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 487
 488    /* Shader resources */
 489    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 490    if (st->has_hw_atomics)
 491       f->NewAtomicBuffer = ST_NEW_HW_ATOMICS | ST_NEW_CS_ATOMICS;
 492    else
 493       f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
 494    f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
 495    f->NewImageUnits = ST_NEW_IMAGE_UNITS;
 496
 497    f->NewShaderConstants[MESA_SHADER_VERTEX] = ST_NEW_VS_CONSTANTS;
 498    f->NewShaderConstants[MESA_SHADER_TESS_CTRL] = ST_NEW_TCS_CONSTANTS;
 499    f->NewShaderConstants[MESA_SHADER_TESS_EVAL] = ST_NEW_TES_CONSTANTS;
 500    f->NewShaderConstants[MESA_SHADER_GEOMETRY] = ST_NEW_GS_CONSTANTS;
 501    f->NewShaderConstants[MESA_SHADER_FRAGMENT] = ST_NEW_FS_CONSTANTS;
 502    f->NewShaderConstants[MESA_SHADER_COMPUTE] = ST_NEW_CS_CONSTANTS;
 503
 504    f->NewWindowRectangles = ST_NEW_WINDOW_RECTANGLES;
 505    f->NewFramebufferSRGB = ST_NEW_FB_STATE;
 506    f->NewScissorRect = ST_NEW_SCISSOR;
 507    f->NewScissorTest = ST_NEW_SCISSOR | ST_NEW_RASTERIZER;
 508
 509    if (st->lower_alpha_test)
 510       f->NewAlphaTest = ST_NEW_FS_STATE;
 511    else
 512       f->NewAlphaTest = ST_NEW_DSA;
 513
 514    f->NewBlend = ST_NEW_BLEND;
 515    f->NewBlendColor = ST_NEW_BLEND_COLOR;
 516    f->NewColorMask = ST_NEW_BLEND;
 517    f->NewDepth = ST_NEW_DSA;
 518    f->NewLogicOp = ST_NEW_BLEND;
 519    f->NewStencil = ST_NEW_DSA;
 520    f->NewMultisampleEnable = ST_NEW_BLEND | ST_NEW_RASTERIZER |
 521                              ST_NEW_SAMPLE_STATE | ST_NEW_SAMPLE_SHADING;
 522    f->NewSampleAlphaToXEnable = ST_NEW_BLEND;
 523    f->NewSampleMask = ST_NEW_SAMPLE_STATE;
 524    f->NewSampleLocations = ST_NEW_SAMPLE_STATE;
 525    f->NewSampleShading = ST_NEW_SAMPLE_SHADING;
 526
 527    /* This depends on what the gallium driver wants. */
 528    if (st->force_persample_in_shader) {
 529       f->NewMultisampleEnable |= ST_NEW_FS_STATE;
 530       f->NewSampleShading |= ST_NEW_FS_STATE;
 531    } else {
 532       f->NewSampleShading |= ST_NEW_RASTERIZER;
 533    }
 534
 535    f->NewClipControl = ST_NEW_VIEWPORT | ST_NEW_RASTERIZER;
 536    f->NewClipPlane = ST_NEW_CLIP_STATE;
 537
 538    if (st->clamp_frag_depth_in_shader) {
 539       f->NewClipControl |= ST_NEW_VS_STATE | ST_NEW_GS_STATE |
 540                            ST_NEW_TES_STATE;
 541
 542       f->NewDepthClamp = ST_NEW_FS_STATE | ST_NEW_VS_STATE |
 543                          ST_NEW_GS_STATE | ST_NEW_TES_STATE;
 544    } else {
 545       f->NewDepthClamp = ST_NEW_RASTERIZER;
 546    }
 547
 548    if (st->lower_ucp)
 549       f->NewClipPlaneEnable = ST_NEW_VS_STATE;
 550    else
 551       f->NewClipPlaneEnable = ST_NEW_RASTERIZER;
 552
 553    f->NewLineState = ST_NEW_RASTERIZER;
 554    f->NewPolygonState = ST_NEW_RASTERIZER;
 555    f->NewPolygonStipple = ST_NEW_POLY_STIPPLE;
 556    f->NewViewport = ST_NEW_VIEWPORT;
 557    f->NewNvConservativeRasterization = ST_NEW_RASTERIZER;
 558    f->NewNvConservativeRasterizationParams = ST_NEW_RASTERIZER;
 559    f->NewIntelConservativeRasterization = ST_NEW_RASTERIZER;
 560 }
 561
 562
 563 static struct st_context *
 564 st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
 565                        const struct st_config_options *options, bool no_error)
 566 {
 567    struct pipe_screen *screen = pipe->screen;
 568    uint i;
 569    struct st_context *st = ST_CALLOC_STRUCT( st_context);
 570
 571    st->options = *options;
 572
 573    ctx->st = st;
 574
 575    st->ctx = ctx;
 576    st->pipe = pipe;
 577    st->dirty = ST_ALL_STATES_MASK;
 578
 579    st->can_bind_const_buffer_as_vertex =
 580       screen->get_param(screen, PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX);
 581
 582    /* st/mesa always uploads zero-stride vertex attribs, and other user
 583     * vertex buffers are only possible with a compatibility profile.
 584     * So tell the u_vbuf module that user VBOs are not possible with the Core
 585     * profile, so that u_vbuf is bypassed completely if there is nothing else
 586     * to do.
 587     */
 588    unsigned cso_flags =
 589       ctx->API == API_OPENGL_CORE ? CSO_NO_USER_VERTEX_BUFFERS : 0;
 590    st->cso_context = cso_create_context(pipe, cso_flags);
 591
 592    st_init_atoms(st);
 593    st_init_clear(st);
 594    st_init_pbo_helpers(st);
 595
 596    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 597    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 598       st->internal_target = PIPE_TEXTURE_2D;
 599    else
 600       st->internal_target = PIPE_TEXTURE_RECT;
 601
 602    /* Setup vertex element info for 'struct st_util_vertex'.
 603     */
 604    {
 605       STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
 606
 607       memset(&st->util_velems, 0, sizeof(st->util_velems));
 608       st->util_velems.velems[0].src_offset = 0;
 609       st->util_velems.velems[0].vertex_buffer_index = 0;
 610       st->util_velems.velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
 611       st->util_velems.velems[1].src_offset = 3 * sizeof(float);
 612       st->util_velems.velems[1].vertex_buffer_index = 0;
 613       st->util_velems.velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 614       st->util_velems.velems[2].src_offset = 7 * sizeof(float);
 615       st->util_velems.velems[2].vertex_buffer_index = 0;
 616       st->util_velems.velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
 617    }
 618
 619    /* Need these flags:
 620     */
 621    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 622    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 623
 624    if (no_error)
 625       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 626
 627    ctx->Const.PackedDriverUniformStorage =
 628       screen->get_param(screen, PIPE_CAP_PACKED_UNIFORMS);
 629
 630    ctx->Const.BitmapUsesRed =
 631       screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
 632                                   PIPE_TEXTURE_2D, 0, 0,
 633                                   PIPE_BIND_SAMPLER_VIEW);
 634
 635    st->has_stencil_export =
 636       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 637    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 638                                               PIPE_TEXTURE_2D, 0, 0,
 639                                               PIPE_BIND_SAMPLER_VIEW);
 640    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 641                                               PIPE_TEXTURE_2D, 0, 0,
 642                                               PIPE_BIND_SAMPLER_VIEW);
 643    st->has_astc_2d_ldr =
 644       screen->is_format_supported(screen, PIPE_FORMAT_ASTC_4x4_SRGB,
 645                                   PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW);
 646    st->has_astc_5x5_ldr =
 647       screen->is_format_supported(screen, PIPE_FORMAT_ASTC_5x5_SRGB,
 648                                   PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW);
 649    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 650                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 651    st->force_persample_in_shader =
 652       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 653       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 654    st->has_shareable_shaders = screen->get_param(screen,
 655                                                  PIPE_CAP_SHAREABLE_SHADERS);
 656    st->needs_texcoord_semantic =
 657       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 658    st->apply_texture_swizzle_to_border_color =
 659       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 660          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 661           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 662    st->has_time_elapsed =
 663       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 664    st->has_half_float_packing =
 665       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 666    st->has_multi_draw_indirect =
 667       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 668    st->has_single_pipe_stat =
 669       screen->get_param(screen, PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE);
 670    st->has_indep_blend_func =
 671       screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC);
 672    st->needs_rgb_dst_alpha_override =
 673       screen->get_param(screen, PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND);
 674    st->lower_flatshade =
 675       !screen->get_param(screen, PIPE_CAP_FLATSHADE);
 676    st->lower_alpha_test =
 677       !screen->get_param(screen, PIPE_CAP_ALPHA_TEST);
 678    st->lower_point_size =
 679       !screen->get_param(screen, PIPE_CAP_POINT_SIZE_FIXED);
 680    st->lower_two_sided_color =
 681       !screen->get_param(screen, PIPE_CAP_TWO_SIDED_COLOR);
 682    st->lower_ucp =
 683       !screen->get_param(screen, PIPE_CAP_CLIP_PLANES);
 684    st->allow_st_finalize_nir_twice = screen->finalize_nir != NULL;
 685
 686    st->has_hw_atomics =
 687       screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
 688                                PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS)
 689       ? true : false;
 690
 691    util_throttle_init(&st->throttle,
 692                       screen->get_param(screen,
 693                                         PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET));
 694
 695    /* GL limits and extensions */
 696    st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions);
 697    st_init_extensions(pipe->screen, &ctx->Const,
 698                       &ctx->Extensions, &st->options, ctx->API);
 699
 700    /* FIXME: add support for geometry and tessellation shaders for
 701     * lower_point_size
 702     */
 703    assert(!ctx->Extensions.OES_geometry_shader || !st->lower_point_size);
 704    assert(!ctx->Extensions.ARB_tessellation_shader || !st->lower_point_size);
 705
 706    /* FIXME: add support for geometry and tessellation shaders for
 707     * lower_ucp
 708     */
 709    assert(!ctx->Extensions.OES_geometry_shader || !st->lower_ucp);
 710    assert(!ctx->Extensions.ARB_tessellation_shader || !st->lower_ucp);
 711
 712    if (st_have_perfmon(st)) {
 713       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 714    }
 715
 716    if (st_have_perfquery(st)) {
 717       ctx->Extensions.INTEL_performance_query = GL_TRUE;
 718    }
 719
 720    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 721    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 722       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 723          st->clamp_vert_color_in_shader = GL_TRUE;
 724       }
 725
 726       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 727          st->clamp_frag_color_in_shader = GL_TRUE;
 728       }
 729
 730       /* For drivers which cannot do color clamping, it's better to just
 731        * disable ARB_color_buffer_float in the core profile, because
 732        * the clamping is deprecated there anyway. */
 733       if (ctx->API == API_OPENGL_CORE &&
 734           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 735          st->clamp_vert_color_in_shader = GL_FALSE;
 736          st->clamp_frag_color_in_shader = GL_FALSE;
 737          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 738       }
 739    }
 740
 741    if (screen->get_param(screen, PIPE_CAP_DEPTH_CLIP_DISABLE) == 2)
 742       st->clamp_frag_depth_in_shader = true;
 743
 744    /* called after _mesa_create_context/_mesa_init_point, fix default user
 745     * settable max point size up
 746     */
 747    ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 748                              ctx->Const.MaxPointSizeAA);
 749    /* For vertex shaders, make sure not to emit saturate when SM 3.0
 750     * is not supported
 751     */
 752    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat =
 753       !screen->get_param(screen, PIPE_CAP_VERTEX_SHADER_SATURATE);
 754
 755    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].PositionAlwaysInvariant = options->vs_position_always_invariant;
 756
 757    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
 758       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
 759                                PIPE_SHADER_CAP_PREFERRED_IR);
 760    ctx->Const.UseNIRGLSLLinker = preferred_ir == PIPE_SHADER_IR_NIR;
 761
 762    if (ctx->Const.GLSLVersion < 400) {
 763       for (i = 0; i < MESA_SHADER_STAGES; i++)
 764          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 765    }
 766
 767    /* Set which shader types can be compiled at link time. */
 768    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 769          st->has_shareable_shaders &&
 770          !st->clamp_frag_depth_in_shader &&
 771          !st->clamp_vert_color_in_shader &&
 772          !st->lower_point_size &&
 773          !st->lower_ucp;
 774
 775    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 776          st->has_shareable_shaders &&
 777          !st->lower_flatshade &&
 778          !st->lower_alpha_test &&
 779          !st->clamp_frag_color_in_shader &&
 780          !st->clamp_frag_depth_in_shader &&
 781          !st->force_persample_in_shader &&
 782          !st->lower_two_sided_color;
 783
 784    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 785    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] =
 786          st->has_shareable_shaders &&
 787          !st->clamp_frag_depth_in_shader &&
 788          !st->clamp_vert_color_in_shader;
 789    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] =
 790          st->has_shareable_shaders &&
 791          !st->clamp_frag_depth_in_shader &&
 792          !st->clamp_vert_color_in_shader;
 793    st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
 794
 795    st->bitmap.cache.empty = true;
 796
 797    _mesa_override_extensions(ctx);
 798    _mesa_compute_version(ctx);
 799
 800    if (ctx->Version == 0) {
 801       /* This can happen when a core profile was requested, but the driver
 802        * does not support some features of GL 3.1 or later.
 803        */
 804       st_destroy_context_priv(st, false);
 805       return NULL;
 806    }
 807
 808    /* This must be done after extensions are initialized to enable persistent
 809     * mappings immediately.
 810     */
 811    _vbo_CreateContext(ctx, true);
 812
 813    _mesa_initialize_dispatch_tables(ctx);
 814    _mesa_initialize_vbo_vtxfmt(ctx);
 815    st_init_driver_flags(st);
 816
 817    /* Initialize context's winsys buffers list */
 818    list_inithead(&st->winsys_buffers);
 819
 820    list_inithead(&st->zombie_sampler_views.list.node);
 821    simple_mtx_init(&st->zombie_sampler_views.mutex, mtx_plain);
 822    list_inithead(&st->zombie_shaders.list.node);
 823    simple_mtx_init(&st->zombie_shaders.mutex, mtx_plain);
 824
 825    return st;
 826 }
 827
 828
 829 static void
 830 st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
 831 {
 832    struct st_context *st = ctx->st;
 833    st->pipe->emit_string_marker(st->pipe, string, len);
 834 }
 835
 836
 837 static void
 838 st_set_background_context(struct gl_context *ctx,
 839                           struct util_queue_monitoring *queue_info)
 840 {
 841    struct st_context *st = ctx->st;
 842    struct st_manager *smapi =
 843       (struct st_manager *) st->iface.st_context_private;
 844
 845    assert(smapi->set_background_context);
 846    smapi->set_background_context(&st->iface, queue_info);
 847 }
 848
 849
 850 static void
 851 st_get_device_uuid(struct gl_context *ctx, char *uuid)
 852 {
 853    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 854
 855    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 856    memset(uuid, 0, GL_UUID_SIZE_EXT);
 857    screen->get_device_uuid(screen, uuid);
 858 }
 859
 860
 861 static void
 862 st_get_driver_uuid(struct gl_context *ctx, char *uuid)
 863 {
 864    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 865
 866    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 867    memset(uuid, 0, GL_UUID_SIZE_EXT);
 868    screen->get_driver_uuid(screen, uuid);
 869 }
 870
 871
 872 static void
 873 st_init_driver_functions(struct pipe_screen *screen,
 874                          struct dd_function_table *functions)
 875 {
 876    _mesa_init_sampler_object_functions(functions);
 877
 878    st_init_draw_functions(functions);
 879    st_init_blit_functions(functions);
 880    st_init_bufferobject_functions(screen, functions);
 881    st_init_clear_functions(functions);
 882    st_init_bitmap_functions(functions);
 883    st_init_copy_image_functions(functions);
 884    st_init_drawpixels_functions(functions);
 885    st_init_rasterpos_functions(functions);
 886
 887    st_init_drawtex_functions(functions);
 888
 889    st_init_eglimage_functions(functions);
 890
 891    st_init_fbo_functions(functions);
 892    st_init_feedback_functions(functions);
 893    st_init_memoryobject_functions(functions);
 894    st_init_msaa_functions(functions);
 895    st_init_perfmon_functions(functions);
 896    st_init_perfquery_functions(functions);
 897    st_init_program_functions(functions);
 898    st_init_query_functions(functions);
 899    st_init_cond_render_functions(functions);
 900    st_init_readpixels_functions(functions);
 901    st_init_semaphoreobject_functions(functions);
 902    st_init_texture_functions(functions);
 903    st_init_texture_barrier_functions(functions);
 904    st_init_flush_functions(screen, functions);
 905    st_init_string_functions(functions);
 906    st_init_viewport_functions(functions);
 907    st_init_compute_functions(functions);
 908
 909    st_init_xformfb_functions(functions);
 910    st_init_syncobj_functions(functions);
 911
 912    st_init_vdpau_functions(functions);
 913
 914    if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
 915       functions->EmitStringMarker = st_emit_string_marker;
 916
 917    functions->Enable = st_Enable;
 918    functions->UpdateState = st_invalidate_state;
 919    functions->QueryMemoryInfo = st_query_memory_info;
 920    functions->SetBackgroundContext = st_set_background_context;
 921    functions->GetDriverUuid = st_get_driver_uuid;
 922    functions->GetDeviceUuid = st_get_device_uuid;
 923
 924    /* GL_ARB_get_program_binary */
 925    functions->GetProgramBinaryDriverSHA1 = st_get_program_binary_driver_sha1;
 926
 927    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
 928       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
 929                                PIPE_SHADER_CAP_PREFERRED_IR);
 930    if (preferred_ir == PIPE_SHADER_IR_NIR) {
 931       functions->ShaderCacheSerializeDriverBlob =  st_serialise_nir_program;
 932       functions->ProgramBinarySerializeDriverBlob =
 933          st_serialise_nir_program_binary;
 934       functions->ProgramBinaryDeserializeDriverBlob =
 935          st_deserialise_nir_program;
 936    } else {
 937       functions->ShaderCacheSerializeDriverBlob =  st_serialise_tgsi_program;
 938       functions->ProgramBinarySerializeDriverBlob =
 939          st_serialise_tgsi_program_binary;
 940       functions->ProgramBinaryDeserializeDriverBlob =
 941          st_deserialise_tgsi_program;
 942    }
 943 }
 944
 945
 946 struct st_context *
 947 st_create_context(gl_api api, struct pipe_context *pipe,
 948                   const struct gl_config *visual,
 949                   struct st_context *share,
 950                   const struct st_config_options *options,
 951                   bool no_error)
 952 {
 953    struct gl_context *ctx;
 954    struct gl_context *shareCtx = share ? share->ctx : NULL;
 955    struct dd_function_table funcs;
 956    struct st_context *st;
 957
 958    util_cpu_detect();
 959
 960    memset(&funcs, 0, sizeof(funcs));
 961    st_init_driver_functions(pipe->screen, &funcs);
 962
 963    ctx = calloc(1, sizeof(struct gl_context));
 964    if (!ctx)
 965       return NULL;
 966
 967    if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
 968       free(ctx);
 969       return NULL;
 970    }
 971
 972    st_debug_init();
 973
 974    if (pipe->screen->get_disk_shader_cache)
 975       ctx->Cache = pipe->screen->get_disk_shader_cache(pipe->screen);
 976
 977    /* XXX: need a capability bit in gallium to query if the pipe
 978     * driver prefers DP4 or MUL/MAD for vertex transformation.
 979     */
 980    if (debug_get_option_mesa_mvp_dp4())
 981       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 982
 983    st = st_create_context_priv(ctx, pipe, options, no_error);
 984    if (!st) {
 985       _mesa_destroy_context(ctx);
 986    }
 987
 988    return st;
 989 }
 990
 991
 992 /**
 993  * When we destroy a context, we must examine all texture objects to
 994  * find/release any sampler views created by that context.
 995  *
 996  * This callback is called per-texture object.  It releases all the
 997  * texture's sampler views which belong to the context.
 998  */
 999 static void
1000 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
1001 {
1002    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
1003    struct st_context *st = (struct st_context *) userData;
1004
1005    st_texture_release_context_sampler_view(st, st_texture_object(texObj));
1006 }
1007
1008 static void
1009 destroy_framebuffer_attachment_sampler_cb(GLuint id, void *data, void *userData)
1010 {
1011    struct gl_framebuffer* glfb = (struct gl_framebuffer*) data;
1012    struct st_context *st = (struct st_context *) userData;
1013
1014     for (unsigned i = 0; i < BUFFER_COUNT; i++) {
1015       struct gl_renderbuffer_attachment *att = &glfb->Attachment[i];
1016       if (att->Texture) {
1017         st_texture_release_context_sampler_view(st, st_texture_object(att->Texture));
1018       }
1019    }
1020 }
1021
1022 void
1023 st_destroy_context(struct st_context *st)
1024 {
1025    struct gl_context *ctx = st->ctx;
1026    struct st_framebuffer *stfb, *next;
1027    struct gl_framebuffer *save_drawbuffer;
1028    struct gl_framebuffer *save_readbuffer;
1029
1030    /* Save the current context and draw/read buffers*/
1031    GET_CURRENT_CONTEXT(save_ctx);
1032    if (save_ctx) {
1033       save_drawbuffer = save_ctx->WinSysDrawBuffer;
1034       save_readbuffer = save_ctx->WinSysReadBuffer;
1035    } else {
1036       save_drawbuffer = save_readbuffer = NULL;
1037    }
1038
1039    /*
1040     * We need to bind the context we're deleting so that
1041     * _mesa_reference_texobj_() uses this context when deleting textures.
1042     * Similarly for framebuffer objects, etc.
1043     */
1044    _mesa_make_current(ctx, NULL, NULL);
1045
1046    /* This must be called first so that glthread has a chance to finish */
1047    _mesa_glthread_destroy(ctx);
1048
1049    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
1050
1051    /* For the fallback textures, free any sampler views belonging to this
1052     * context.
1053     */
1054    for (unsigned i = 0; i < NUM_TEXTURE_TARGETS; i++) {
1055       struct st_texture_object *stObj =
1056          st_texture_object(ctx->Shared->FallbackTex[i]);
1057       if (stObj) {
1058          st_texture_release_context_sampler_view(st, stObj);
1059       }
1060    }
1061
1062    st_context_free_zombie_objects(st);
1063
1064    simple_mtx_destroy(&st->zombie_sampler_views.mutex);
1065    simple_mtx_destroy(&st->zombie_shaders.mutex);
1066
1067    st_reference_prog(st, &st->fp, NULL);
1068    st_reference_prog(st, &st->gp, NULL);
1069    st_reference_prog(st, &st->vp, NULL);
1070    st_reference_prog(st, &st->tcp, NULL);
1071    st_reference_prog(st, &st->tep, NULL);
1072    st_reference_prog(st, &st->cp, NULL);
1073
1074    /* release framebuffer in the winsys buffers list */
1075    LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
1076       st_framebuffer_reference(&stfb, NULL);
1077    }
1078
1079    _mesa_HashWalk(ctx->Shared->FrameBuffers, destroy_framebuffer_attachment_sampler_cb, st);
1080
1081    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
1082    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
1083
1084    _vbo_DestroyContext(ctx);
1085
1086    st_destroy_program_variants(st);
1087
1088    _mesa_free_context_data(ctx);
1089
1090    /* This will free the st_context too, so 'st' must not be accessed
1091     * afterwards. */
1092    st_destroy_context_priv(st, true);
1093    st = NULL;
1094
1095    free(ctx);
1096
1097    if (save_ctx == ctx) {
1098       /* unbind the context we just deleted */
1099       _mesa_make_current(NULL, NULL, NULL);
1100    } else {
1101       /* Restore the current context and draw/read buffers (may be NULL) */
1102       _mesa_make_current(save_ctx, save_drawbuffer, save_readbuffer);
1103    }
1104 }