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 "main/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_program.h"
  61 #include "st_cb_queryobj.h"
  62 #include "st_cb_readpixels.h"
  63 #include "st_cb_semaphoreobjects.h"
  64 #include "st_cb_texture.h"
  65 #include "st_cb_xformfb.h"
  66 #include "st_cb_flush.h"
  67 #include "st_cb_syncobj.h"
  68 #include "st_cb_strings.h"
  69 #include "st_cb_texturebarrier.h"
  70 #include "st_cb_viewport.h"
  71 #include "st_atom.h"
  72 #include "st_draw.h"
  73 #include "st_extensions.h"
  74 #include "st_gen_mipmap.h"
  75 #include "st_pbo.h"
  76 #include "st_program.h"
  77 #include "st_sampler_view.h"
  78 #include "st_shader_cache.h"
  79 #include "st_vdpau.h"
  80 #include "st_texture.h"
  81 #include "st_util.h"
  82 #include "pipe/p_context.h"
  83 #include "util/u_cpu_detect.h"
  84 #include "util/u_inlines.h"
  85 #include "util/u_upload_mgr.h"
  86 #include "util/u_vbuf.h"
  87 #include "cso_cache/cso_context.h"
  88
  89
  90 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  91
  92
  93 /**
  94  * Called via ctx->Driver.Enable()
  95  */
  96 static void
  97 st_Enable(struct gl_context *ctx, GLenum cap, GLboolean state)
  98 {
  99    struct st_context *st = st_context(ctx);
 100
 101    switch (cap) {
 102    case GL_DEBUG_OUTPUT:
 103    case GL_DEBUG_OUTPUT_SYNCHRONOUS:
 104       st_update_debug_callback(st);
 105       break;
 106    default:
 107       break;
 108    }
 109 }
 110
 111
 112 /**
 113  * Called via ctx->Driver.QueryMemoryInfo()
 114  */
 115 static void
 116 st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
 117 {
 118    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 119    struct pipe_memory_info info;
 120
 121    assert(screen->query_memory_info);
 122    if (!screen->query_memory_info)
 123       return;
 124
 125    screen->query_memory_info(screen, &info);
 126
 127    out->total_device_memory = info.total_device_memory;
 128    out->avail_device_memory = info.avail_device_memory;
 129    out->total_staging_memory = info.total_staging_memory;
 130    out->avail_staging_memory = info.avail_staging_memory;
 131    out->device_memory_evicted = info.device_memory_evicted;
 132    out->nr_device_memory_evictions = info.nr_device_memory_evictions;
 133 }
 134
 135
 136 static uint64_t
 137 st_get_active_states(struct gl_context *ctx)
 138 {
 139    struct st_vertex_program *vp =
 140       st_vertex_program(ctx->VertexProgram._Current);
 141    struct st_common_program *tcp =
 142       st_common_program(ctx->TessCtrlProgram._Current);
 143    struct st_common_program *tep =
 144       st_common_program(ctx->TessEvalProgram._Current);
 145    struct st_common_program *gp =
 146       st_common_program(ctx->GeometryProgram._Current);
 147    struct st_fragment_program *fp =
 148       st_fragment_program(ctx->FragmentProgram._Current);
 149    struct st_compute_program *cp =
 150       st_compute_program(ctx->ComputeProgram._Current);
 151    uint64_t active_shader_states = 0;
 152
 153    if (vp)
 154       active_shader_states |= vp->affected_states;
 155    if (tcp)
 156       active_shader_states |= tcp->affected_states;
 157    if (tep)
 158       active_shader_states |= tep->affected_states;
 159    if (gp)
 160       active_shader_states |= gp->affected_states;
 161    if (fp)
 162       active_shader_states |= fp->affected_states;
 163    if (cp)
 164       active_shader_states |= cp->affected_states;
 165
 166    /* Mark non-shader-resource shader states as "always active". */
 167    return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
 168 }
 169
 170
 171 void
 172 st_invalidate_buffers(struct st_context *st)
 173 {
 174    st->dirty |= ST_NEW_BLEND |
 175                 ST_NEW_DSA |
 176                 ST_NEW_FB_STATE |
 177                 ST_NEW_SAMPLE_STATE |
 178                 ST_NEW_SAMPLE_SHADING |
 179                 ST_NEW_FS_STATE |
 180                 ST_NEW_POLY_STIPPLE |
 181                 ST_NEW_VIEWPORT |
 182                 ST_NEW_RASTERIZER |
 183                 ST_NEW_SCISSOR |
 184                 ST_NEW_WINDOW_RECTANGLES;
 185 }
 186
 187
 188 static inline bool
 189 st_vp_uses_current_values(const struct gl_context *ctx)
 190 {
 191    const uint64_t inputs = ctx->VertexProgram._Current->info.inputs_read;
 192    return _mesa_draw_current_bits(ctx) & inputs;
 193 }
 194
 195
 196 /**
 197  * Called via ctx->Driver.UpdateState()
 198  */
 199 static void
 200 st_invalidate_state(struct gl_context *ctx)
 201 {
 202    GLbitfield new_state = ctx->NewState;
 203    struct st_context *st = st_context(ctx);
 204
 205    if (new_state & _NEW_BUFFERS) {
 206       st_invalidate_buffers(st);
 207    } else {
 208       /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
 209        * check them when _NEW_BUFFERS isn't set.
 210        */
 211       if (new_state & _NEW_PROGRAM)
 212          st->dirty |= ST_NEW_RASTERIZER;
 213
 214       if (new_state & _NEW_FOG)
 215          st->dirty |= ST_NEW_FS_STATE;
 216
 217       if (new_state & _NEW_FRAG_CLAMP) {
 218          if (st->clamp_frag_color_in_shader)
 219             st->dirty |= ST_NEW_FS_STATE;
 220          else
 221             st->dirty |= ST_NEW_RASTERIZER;
 222       }
 223    }
 224
 225    if (new_state & (_NEW_LIGHT |
 226                     _NEW_POINT))
 227       st->dirty |= ST_NEW_RASTERIZER;
 228
 229    if (new_state & _NEW_PROJECTION &&
 230        st_user_clip_planes_enabled(ctx))
 231       st->dirty |= ST_NEW_CLIP_STATE;
 232
 233    if (new_state & _NEW_PIXEL)
 234       st->dirty |= ST_NEW_PIXEL_TRANSFER;
 235
 236    if (new_state & _NEW_CURRENT_ATTRIB && st_vp_uses_current_values(ctx))
 237       st->dirty |= ST_NEW_VERTEX_ARRAYS;
 238
 239    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 240    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT))
 241       st->dirty |= ST_NEW_VS_STATE;
 242
 243    /* Which shaders are dirty will be determined manually. */
 244    if (new_state & _NEW_PROGRAM) {
 245       st->gfx_shaders_may_be_dirty = true;
 246       st->compute_shader_may_be_dirty = true;
 247       /* This will mask out unused shader resources. */
 248       st->active_states = st_get_active_states(ctx);
 249    }
 250
 251    if (new_state & _NEW_TEXTURE_OBJECT) {
 252       st->dirty |= st->active_states &
 253                    (ST_NEW_SAMPLER_VIEWS |
 254                     ST_NEW_SAMPLERS |
 255                     ST_NEW_IMAGE_UNITS);
 256       if (ctx->FragmentProgram._Current &&
 257           ctx->FragmentProgram._Current->ExternalSamplersUsed) {
 258          st->dirty |= ST_NEW_FS_STATE;
 259       }
 260    }
 261 }
 262
 263
 264 /*
 265  * In some circumstances (such as running google-chrome) the state
 266  * tracker may try to delete a resource view from a context different
 267  * than when it was created.  We don't want to do that.
 268  *
 269  * In that situation, st_texture_release_all_sampler_views() calls this
 270  * function to transfer the sampler view reference to this context (expected
 271  * to be the context which created the view.)
 272  */
 273 void
 274 st_save_zombie_sampler_view(struct st_context *st,
 275                             struct pipe_sampler_view *view)
 276 {
 277    struct st_zombie_sampler_view_node *entry;
 278
 279    assert(view->context == st->pipe);
 280
 281    entry = MALLOC_STRUCT(st_zombie_sampler_view_node);
 282    if (!entry)
 283       return;
 284
 285    entry->view = view;
 286
 287    /* We need a mutex since this function may be called from one thread
 288     * while free_zombie_resource_views() is called from another.
 289     */
 290    mtx_lock(&st->zombie_sampler_views.mutex);
 291    LIST_ADDTAIL(&entry->node, &st->zombie_sampler_views.list.node);
 292    mtx_unlock(&st->zombie_sampler_views.mutex);
 293 }
 294
 295
 296 /*
 297  * Since OpenGL shaders may be shared among contexts, we can wind up
 298  * with variants of a shader created with different contexts.
 299  * When we go to destroy a gallium shader, we want to free it with the
 300  * same context that it was created with, unless the driver reports
 301  * PIPE_CAP_SHAREABLE_SHADERS = TRUE.
 302  */
 303 void
 304 st_save_zombie_shader(struct st_context *st,
 305                       enum pipe_shader_type type,
 306                       struct pipe_shader_state *shader)
 307 {
 308    struct st_zombie_shader_node *entry;
 309
 310    /* we shouldn't be here if the driver supports shareable shaders */
 311    assert(!st->has_shareable_shaders);
 312
 313    entry = MALLOC_STRUCT(st_zombie_shader_node);
 314    if (!entry)
 315       return;
 316
 317    entry->shader = shader;
 318    entry->type = type;
 319
 320    /* We need a mutex since this function may be called from one thread
 321     * while free_zombie_shaders() is called from another.
 322     */
 323    mtx_lock(&st->zombie_shaders.mutex);
 324    LIST_ADDTAIL(&entry->node, &st->zombie_shaders.list.node);
 325    mtx_unlock(&st->zombie_shaders.mutex);
 326 }
 327
 328
 329 /*
 330  * Free any zombie sampler views that may be attached to this context.
 331  */
 332 static void
 333 free_zombie_sampler_views(struct st_context *st)
 334 {
 335    struct st_zombie_sampler_view_node *entry, *next;
 336
 337    if (LIST_IS_EMPTY(&st->zombie_sampler_views.list.node)) {
 338       return;
 339    }
 340
 341    mtx_lock(&st->zombie_sampler_views.mutex);
 342
 343    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 344                             &st->zombie_sampler_views.list.node, node) {
 345       LIST_DEL(&entry->node);  // remove this entry from the list
 346
 347       assert(entry->view->context == st->pipe);
 348       pipe_sampler_view_reference(&entry->view, NULL);
 349
 350       free(entry);
 351    }
 352
 353    assert(LIST_IS_EMPTY(&st->zombie_sampler_views.list.node));
 354
 355    mtx_unlock(&st->zombie_sampler_views.mutex);
 356 }
 357
 358
 359 /*
 360  * Free any zombie shaders that may be attached to this context.
 361  */
 362 static void
 363 free_zombie_shaders(struct st_context *st)
 364 {
 365    struct st_zombie_shader_node *entry, *next;
 366
 367    if (LIST_IS_EMPTY(&st->zombie_shaders.list.node)) {
 368       return;
 369    }
 370
 371    mtx_lock(&st->zombie_shaders.mutex);
 372
 373    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 374                             &st->zombie_shaders.list.node, node) {
 375       LIST_DEL(&entry->node);  // remove this entry from the list
 376
 377       switch (entry->type) {
 378       case PIPE_SHADER_VERTEX:
 379          cso_delete_vertex_shader(st->cso_context, entry->shader);
 380          break;
 381       case PIPE_SHADER_FRAGMENT:
 382          cso_delete_fragment_shader(st->cso_context, entry->shader);
 383          break;
 384       case PIPE_SHADER_GEOMETRY:
 385          cso_delete_geometry_shader(st->cso_context, entry->shader);
 386          break;
 387       case PIPE_SHADER_TESS_CTRL:
 388          cso_delete_tessctrl_shader(st->cso_context, entry->shader);
 389          break;
 390       case PIPE_SHADER_TESS_EVAL:
 391          cso_delete_tesseval_shader(st->cso_context, entry->shader);
 392          break;
 393       case PIPE_SHADER_COMPUTE:
 394          cso_delete_compute_shader(st->cso_context, entry->shader);
 395          break;
 396       default:
 397          unreachable("invalid shader type in free_zombie_shaders()");
 398       }
 399       free(entry);
 400    }
 401
 402    assert(LIST_IS_EMPTY(&st->zombie_shaders.list.node));
 403
 404    mtx_unlock(&st->zombie_shaders.mutex);
 405 }
 406
 407
 408 /*
 409  * This function is called periodically to free any zombie objects
 410  * which are attached to this context.
 411  */
 412 void
 413 st_context_free_zombie_objects(struct st_context *st)
 414 {
 415    free_zombie_sampler_views(st);
 416    free_zombie_shaders(st);
 417 }
 418
 419
 420 static void
 421 st_destroy_context_priv(struct st_context *st, bool destroy_pipe)
 422 {
 423    uint i;
 424
 425    st_destroy_atoms(st);
 426    st_destroy_draw(st);
 427    st_destroy_clear(st);
 428    st_destroy_bitmap(st);
 429    st_destroy_drawpix(st);
 430    st_destroy_drawtex(st);
 431    st_destroy_perfmon(st);
 432    st_destroy_pbo_helpers(st);
 433    st_destroy_bound_texture_handles(st);
 434    st_destroy_bound_image_handles(st);
 435
 436    for (i = 0; i < ARRAY_SIZE(st->state.frag_sampler_views); i++) {
 437       pipe_sampler_view_reference(&st->state.frag_sampler_views[i], NULL);
 438    }
 439
 440    /* free glReadPixels cache data */
 441    st_invalidate_readpix_cache(st);
 442    util_throttle_deinit(st->pipe->screen, &st->throttle);
 443
 444    cso_destroy_context(st->cso_context);
 445
 446    if (st->pipe && destroy_pipe)
 447       st->pipe->destroy(st->pipe);
 448
 449    free(st);
 450 }
 451
 452
 453 static void
 454 st_init_driver_flags(struct st_context *st)
 455 {
 456    struct gl_driver_flags *f = &st->ctx->DriverFlags;
 457
 458    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 459    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 460    f->NewTileRasterOrder = ST_NEW_RASTERIZER;
 461    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 462    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 463
 464    /* Shader resources */
 465    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 466    if (st->has_hw_atomics)
 467       f->NewAtomicBuffer = ST_NEW_HW_ATOMICS | ST_NEW_CS_ATOMICS;
 468    else
 469       f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
 470    f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
 471    f->NewImageUnits = ST_NEW_IMAGE_UNITS;
 472
 473    f->NewShaderConstants[MESA_SHADER_VERTEX] = ST_NEW_VS_CONSTANTS;
 474    f->NewShaderConstants[MESA_SHADER_TESS_CTRL] = ST_NEW_TCS_CONSTANTS;
 475    f->NewShaderConstants[MESA_SHADER_TESS_EVAL] = ST_NEW_TES_CONSTANTS;
 476    f->NewShaderConstants[MESA_SHADER_GEOMETRY] = ST_NEW_GS_CONSTANTS;
 477    f->NewShaderConstants[MESA_SHADER_FRAGMENT] = ST_NEW_FS_CONSTANTS;
 478    f->NewShaderConstants[MESA_SHADER_COMPUTE] = ST_NEW_CS_CONSTANTS;
 479
 480    f->NewWindowRectangles = ST_NEW_WINDOW_RECTANGLES;
 481    f->NewFramebufferSRGB = ST_NEW_FB_STATE;
 482    f->NewScissorRect = ST_NEW_SCISSOR;
 483    f->NewScissorTest = ST_NEW_SCISSOR | ST_NEW_RASTERIZER;
 484    f->NewAlphaTest = ST_NEW_DSA;
 485    f->NewBlend = ST_NEW_BLEND;
 486    f->NewBlendColor = ST_NEW_BLEND_COLOR;
 487    f->NewColorMask = ST_NEW_BLEND;
 488    f->NewDepth = ST_NEW_DSA;
 489    f->NewLogicOp = ST_NEW_BLEND;
 490    f->NewStencil = ST_NEW_DSA;
 491    f->NewMultisampleEnable = ST_NEW_BLEND | ST_NEW_RASTERIZER |
 492                              ST_NEW_SAMPLE_STATE | ST_NEW_SAMPLE_SHADING;
 493    f->NewSampleAlphaToXEnable = ST_NEW_BLEND;
 494    f->NewSampleMask = ST_NEW_SAMPLE_STATE;
 495    f->NewSampleLocations = ST_NEW_SAMPLE_STATE;
 496    f->NewSampleShading = ST_NEW_SAMPLE_SHADING;
 497
 498    /* This depends on what the gallium driver wants. */
 499    if (st->force_persample_in_shader) {
 500       f->NewMultisampleEnable |= ST_NEW_FS_STATE;
 501       f->NewSampleShading |= ST_NEW_FS_STATE;
 502    } else {
 503       f->NewSampleShading |= ST_NEW_RASTERIZER;
 504    }
 505
 506    f->NewClipControl = ST_NEW_VIEWPORT | ST_NEW_RASTERIZER;
 507    f->NewClipPlane = ST_NEW_CLIP_STATE;
 508    f->NewClipPlaneEnable = ST_NEW_RASTERIZER;
 509    f->NewDepthClamp = ST_NEW_RASTERIZER;
 510    f->NewLineState = ST_NEW_RASTERIZER;
 511    f->NewPolygonState = ST_NEW_RASTERIZER;
 512    f->NewPolygonStipple = ST_NEW_POLY_STIPPLE;
 513    f->NewViewport = ST_NEW_VIEWPORT;
 514    f->NewNvConservativeRasterization = ST_NEW_RASTERIZER;
 515    f->NewNvConservativeRasterizationParams = ST_NEW_RASTERIZER;
 516 }
 517
 518
 519 static struct st_context *
 520 st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
 521                        const struct st_config_options *options, bool no_error)
 522 {
 523    struct pipe_screen *screen = pipe->screen;
 524    uint i;
 525    struct st_context *st = ST_CALLOC_STRUCT( st_context);
 526
 527    st->options = *options;
 528
 529    ctx->st = st;
 530
 531    st->ctx = ctx;
 532    st->pipe = pipe;
 533
 534    /* state tracker needs the VBO module */
 535    _vbo_CreateContext(ctx);
 536
 537    st->dirty = ST_ALL_STATES_MASK;
 538
 539    st->can_bind_const_buffer_as_vertex =
 540       screen->get_param(screen, PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX);
 541
 542    /* st/mesa always uploads zero-stride vertex attribs, and other user
 543     * vertex buffers are only possible with a compatibility profile.
 544     * So tell the u_vbuf module that user VBOs are not possible with the Core
 545     * profile, so that u_vbuf is bypassed completely if there is nothing else
 546     * to do.
 547     */
 548    unsigned vbuf_flags =
 549       ctx->API == API_OPENGL_CORE ? U_VBUF_FLAG_NO_USER_VBOS : 0;
 550    st->cso_context = cso_create_context(pipe, vbuf_flags);
 551
 552    st_init_atoms(st);
 553    st_init_clear(st);
 554    st_init_pbo_helpers(st);
 555
 556    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 557    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 558       st->internal_target = PIPE_TEXTURE_2D;
 559    else
 560       st->internal_target = PIPE_TEXTURE_RECT;
 561
 562    /* Setup vertex element info for 'struct st_util_vertex'.
 563     */
 564    {
 565       STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
 566
 567       memset(&st->util_velems, 0, sizeof(st->util_velems));
 568       st->util_velems[0].src_offset = 0;
 569       st->util_velems[0].vertex_buffer_index = 0;
 570       st->util_velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
 571       st->util_velems[1].src_offset = 3 * sizeof(float);
 572       st->util_velems[1].vertex_buffer_index = 0;
 573       st->util_velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 574       st->util_velems[2].src_offset = 7 * sizeof(float);
 575       st->util_velems[2].vertex_buffer_index = 0;
 576       st->util_velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
 577    }
 578
 579    /* we want all vertex data to be placed in buffer objects */
 580    vbo_use_buffer_objects(ctx);
 581
 582
 583    /* make sure that no VBOs are left mapped when we're drawing. */
 584    vbo_always_unmap_buffers(ctx);
 585
 586    /* Need these flags:
 587     */
 588    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 589
 590    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 591
 592    if (no_error)
 593       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 594
 595    ctx->Const.PackedDriverUniformStorage =
 596       screen->get_param(screen, PIPE_CAP_PACKED_UNIFORMS);
 597
 598    st->has_stencil_export =
 599       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 600    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 601    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 602                                               PIPE_TEXTURE_2D, 0, 0,
 603                                               PIPE_BIND_SAMPLER_VIEW);
 604    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 605                                               PIPE_TEXTURE_2D, 0, 0,
 606                                               PIPE_BIND_SAMPLER_VIEW);
 607    st->has_astc_2d_ldr =
 608       screen->is_format_supported(screen, PIPE_FORMAT_ASTC_4x4_SRGB,
 609                                   PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW);
 610    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 611                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 612    st->force_persample_in_shader =
 613       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 614       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 615    st->has_shareable_shaders = screen->get_param(screen,
 616                                                  PIPE_CAP_SHAREABLE_SHADERS);
 617    st->needs_texcoord_semantic =
 618       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 619    st->apply_texture_swizzle_to_border_color =
 620       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 621          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 622           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 623    st->has_time_elapsed =
 624       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 625    st->has_half_float_packing =
 626       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 627    st->has_multi_draw_indirect =
 628       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 629    st->has_single_pipe_stat =
 630       screen->get_param(screen, PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE);
 631    st->has_indep_blend_func =
 632       screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC);
 633    st->needs_rgb_dst_alpha_override =
 634       screen->get_param(screen, PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND);
 635
 636    st->has_hw_atomics =
 637       screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
 638                                PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS)
 639       ? true : false;
 640
 641    util_throttle_init(&st->throttle,
 642                       screen->get_param(screen,
 643                                         PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET));
 644
 645    /* GL limits and extensions */
 646    st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions, ctx->API);
 647    st_init_extensions(pipe->screen, &ctx->Const,
 648                       &ctx->Extensions, &st->options, ctx->API);
 649
 650    if (st_have_perfmon(st)) {
 651       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 652    }
 653
 654    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 655    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 656       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 657          st->clamp_vert_color_in_shader = GL_TRUE;
 658       }
 659
 660       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 661          st->clamp_frag_color_in_shader = GL_TRUE;
 662       }
 663
 664       /* For drivers which cannot do color clamping, it's better to just
 665        * disable ARB_color_buffer_float in the core profile, because
 666        * the clamping is deprecated there anyway. */
 667       if (ctx->API == API_OPENGL_CORE &&
 668           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 669          st->clamp_vert_color_in_shader = GL_FALSE;
 670          st->clamp_frag_color_in_shader = GL_FALSE;
 671          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 672       }
 673    }
 674
 675    /* called after _mesa_create_context/_mesa_init_point, fix default user
 676     * settable max point size up
 677     */
 678    ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 679                              ctx->Const.MaxPointSizeAA);
 680    /* For vertex shaders, make sure not to emit saturate when SM 3.0
 681     * is not supported
 682     */
 683    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat =
 684       !st->has_shader_model3;
 685
 686    if (!ctx->Extensions.ARB_gpu_shader5) {
 687       for (i = 0; i < MESA_SHADER_STAGES; i++)
 688          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 689    }
 690
 691    /* Set which shader types can be compiled at link time. */
 692    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 693          st->has_shareable_shaders &&
 694          !st->clamp_vert_color_in_shader;
 695
 696    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 697          st->has_shareable_shaders &&
 698          !st->clamp_frag_color_in_shader &&
 699          !st->force_persample_in_shader;
 700
 701    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 702    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] = st->has_shareable_shaders;
 703    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] = st->has_shareable_shaders;
 704    st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
 705
 706    st->bitmap.cache.empty = true;
 707
 708    _mesa_override_extensions(ctx);
 709    _mesa_compute_version(ctx);
 710
 711    if (ctx->Version == 0) {
 712       /* This can happen when a core profile was requested, but the driver
 713        * does not support some features of GL 3.1 or later.
 714        */
 715       st_destroy_context_priv(st, false);
 716       return NULL;
 717    }
 718
 719    _mesa_initialize_dispatch_tables(ctx);
 720    _mesa_initialize_vbo_vtxfmt(ctx);
 721    st_init_driver_flags(st);
 722
 723    /* Initialize context's winsys buffers list */
 724    LIST_INITHEAD(&st->winsys_buffers);
 725
 726    LIST_INITHEAD(&st->zombie_sampler_views.list.node);
 727    mtx_init(&st->zombie_sampler_views.mutex, mtx_plain);
 728    LIST_INITHEAD(&st->zombie_shaders.list.node);
 729    mtx_init(&st->zombie_shaders.mutex, mtx_plain);
 730
 731    return st;
 732 }
 733
 734
 735 static void
 736 st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
 737 {
 738    struct st_context *st = ctx->st;
 739    st->pipe->emit_string_marker(st->pipe, string, len);
 740 }
 741
 742
 743 static void
 744 st_set_background_context(struct gl_context *ctx,
 745                           struct util_queue_monitoring *queue_info)
 746 {
 747    struct st_context *st = ctx->st;
 748    struct st_manager *smapi =
 749       (struct st_manager *) st->iface.st_context_private;
 750
 751    assert(smapi->set_background_context);
 752    smapi->set_background_context(&st->iface, queue_info);
 753 }
 754
 755
 756 static void
 757 st_get_device_uuid(struct gl_context *ctx, char *uuid)
 758 {
 759    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 760
 761    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 762    memset(uuid, 0, GL_UUID_SIZE_EXT);
 763    screen->get_device_uuid(screen, uuid);
 764 }
 765
 766
 767 static void
 768 st_get_driver_uuid(struct gl_context *ctx, char *uuid)
 769 {
 770    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 771
 772    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 773    memset(uuid, 0, GL_UUID_SIZE_EXT);
 774    screen->get_driver_uuid(screen, uuid);
 775 }
 776
 777
 778 static void
 779 st_init_driver_functions(struct pipe_screen *screen,
 780                          struct dd_function_table *functions)
 781 {
 782    _mesa_init_sampler_object_functions(functions);
 783
 784    st_init_draw_functions(functions);
 785    st_init_blit_functions(functions);
 786    st_init_bufferobject_functions(screen, functions);
 787    st_init_clear_functions(functions);
 788    st_init_bitmap_functions(functions);
 789    st_init_copy_image_functions(functions);
 790    st_init_drawpixels_functions(functions);
 791    st_init_rasterpos_functions(functions);
 792
 793    st_init_drawtex_functions(functions);
 794
 795    st_init_eglimage_functions(functions);
 796
 797    st_init_fbo_functions(functions);
 798    st_init_feedback_functions(functions);
 799    st_init_memoryobject_functions(functions);
 800    st_init_msaa_functions(functions);
 801    st_init_perfmon_functions(functions);
 802    st_init_program_functions(functions);
 803    st_init_query_functions(functions);
 804    st_init_cond_render_functions(functions);
 805    st_init_readpixels_functions(functions);
 806    st_init_semaphoreobject_functions(functions);
 807    st_init_texture_functions(functions);
 808    st_init_texture_barrier_functions(functions);
 809    st_init_flush_functions(screen, functions);
 810    st_init_string_functions(functions);
 811    st_init_viewport_functions(functions);
 812    st_init_compute_functions(functions);
 813
 814    st_init_xformfb_functions(functions);
 815    st_init_syncobj_functions(functions);
 816
 817    st_init_vdpau_functions(functions);
 818
 819    if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
 820       functions->EmitStringMarker = st_emit_string_marker;
 821
 822    functions->Enable = st_Enable;
 823    functions->UpdateState = st_invalidate_state;
 824    functions->QueryMemoryInfo = st_query_memory_info;
 825    functions->SetBackgroundContext = st_set_background_context;
 826    functions->GetDriverUuid = st_get_driver_uuid;
 827    functions->GetDeviceUuid = st_get_device_uuid;
 828
 829    /* GL_ARB_get_program_binary */
 830    functions->GetProgramBinaryDriverSHA1 = st_get_program_binary_driver_sha1;
 831
 832    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
 833       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
 834                                PIPE_SHADER_CAP_PREFERRED_IR);
 835    if (preferred_ir == PIPE_SHADER_IR_NIR) {
 836       functions->ShaderCacheSerializeDriverBlob =  st_serialise_nir_program;
 837       functions->ProgramBinarySerializeDriverBlob =
 838          st_serialise_nir_program_binary;
 839       functions->ProgramBinaryDeserializeDriverBlob =
 840          st_deserialise_nir_program;
 841    } else {
 842       functions->ShaderCacheSerializeDriverBlob =  st_serialise_tgsi_program;
 843       functions->ProgramBinarySerializeDriverBlob =
 844          st_serialise_tgsi_program_binary;
 845       functions->ProgramBinaryDeserializeDriverBlob =
 846          st_deserialise_tgsi_program;
 847    }
 848 }
 849
 850
 851 struct st_context *
 852 st_create_context(gl_api api, struct pipe_context *pipe,
 853                   const struct gl_config *visual,
 854                   struct st_context *share,
 855                   const struct st_config_options *options,
 856                   bool no_error)
 857 {
 858    struct gl_context *ctx;
 859    struct gl_context *shareCtx = share ? share->ctx : NULL;
 860    struct dd_function_table funcs;
 861    struct st_context *st;
 862
 863    util_cpu_detect();
 864
 865    memset(&funcs, 0, sizeof(funcs));
 866    st_init_driver_functions(pipe->screen, &funcs);
 867
 868    ctx = calloc(1, sizeof(struct gl_context));
 869    if (!ctx)
 870       return NULL;
 871
 872    if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
 873       free(ctx);
 874       return NULL;
 875    }
 876
 877    st_debug_init();
 878
 879    if (pipe->screen->get_disk_shader_cache &&
 880        !(ST_DEBUG & DEBUG_TGSI))
 881       ctx->Cache = pipe->screen->get_disk_shader_cache(pipe->screen);
 882
 883    /* XXX: need a capability bit in gallium to query if the pipe
 884     * driver prefers DP4 or MUL/MAD for vertex transformation.
 885     */
 886    if (debug_get_option_mesa_mvp_dp4())
 887       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 888
 889    st = st_create_context_priv(ctx, pipe, options, no_error);
 890    if (!st) {
 891       _mesa_destroy_context(ctx);
 892    }
 893
 894    return st;
 895 }
 896
 897
 898 /**
 899  * When we destroy a context, we must examine all texture objects to
 900  * find/release any sampler views created by that context.
 901  *
 902  * This callback is called per-texture object.  It releases all the
 903  * texture's sampler views which belong to the context.
 904  */
 905 static void
 906 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 907 {
 908    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 909    struct st_context *st = (struct st_context *) userData;
 910
 911    st_texture_release_context_sampler_view(st, st_texture_object(texObj));
 912 }
 913
 914
 915 void
 916 st_destroy_context(struct st_context *st)
 917 {
 918    struct gl_context *ctx = st->ctx;
 919    struct st_framebuffer *stfb, *next;
 920    struct gl_framebuffer *save_drawbuffer;
 921    struct gl_framebuffer *save_readbuffer;
 922
 923    /* Save the current context and draw/read buffers*/
 924    GET_CURRENT_CONTEXT(save_ctx);
 925    if (save_ctx) {
 926       save_drawbuffer = save_ctx->WinSysDrawBuffer;
 927       save_readbuffer = save_ctx->WinSysReadBuffer;
 928    } else {
 929       save_drawbuffer = save_readbuffer = NULL;
 930    }
 931
 932    /*
 933     * We need to bind the context we're deleting so that
 934     * _mesa_reference_texobj_() uses this context when deleting textures.
 935     * Similarly for framebuffer objects, etc.
 936     */
 937    _mesa_make_current(ctx, NULL, NULL);
 938
 939    /* This must be called first so that glthread has a chance to finish */
 940    _mesa_glthread_destroy(ctx);
 941
 942    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 943
 944    /* For the fallback textures, free any sampler views belonging to this
 945     * context.
 946     */
 947    for (unsigned i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 948       struct st_texture_object *stObj =
 949          st_texture_object(ctx->Shared->FallbackTex[i]);
 950       if (stObj) {
 951          st_texture_release_context_sampler_view(st, stObj);
 952       }
 953    }
 954
 955    st_context_free_zombie_objects(st);
 956
 957    mtx_destroy(&st->zombie_sampler_views.mutex);
 958    mtx_destroy(&st->zombie_shaders.mutex);
 959
 960    st_reference_fragprog(st, &st->fp, NULL);
 961    st_reference_prog(st, &st->gp, NULL);
 962    st_reference_vertprog(st, &st->vp, NULL);
 963    st_reference_prog(st, &st->tcp, NULL);
 964    st_reference_prog(st, &st->tep, NULL);
 965    st_reference_compprog(st, &st->cp, NULL);
 966
 967    /* release framebuffer in the winsys buffers list */
 968    LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
 969       st_framebuffer_reference(&stfb, NULL);
 970    }
 971
 972    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
 973    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
 974
 975    _vbo_DestroyContext(ctx);
 976
 977    st_destroy_program_variants(st);
 978
 979    _mesa_free_context_data(ctx);
 980
 981    /* This will free the st_context too, so 'st' must not be accessed
 982     * afterwards. */
 983    st_destroy_context_priv(st, true);
 984    st = NULL;
 985
 986    free(ctx);
 987
 988    if (save_ctx == ctx) {
 989       /* unbind the context we just deleted */
 990       _mesa_make_current(NULL, NULL, NULL);
 991    } else {
 992       /* Restore the current context and draw/read buffers (may be NULL) */
 993       _mesa_make_current(save_ctx, save_drawbuffer, save_readbuffer);
 994    }
 995 }