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 #include "compiler/glsl/glsl_parser_extras.h"
  89
  90
  91 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  92
  93
  94 /**
  95  * Called via ctx->Driver.Enable()
  96  */
  97 static void
  98 st_Enable(struct gl_context *ctx, GLenum cap, GLboolean state)
  99 {
 100    struct st_context *st = st_context(ctx);
 101
 102    switch (cap) {
 103    case GL_DEBUG_OUTPUT:
 104    case GL_DEBUG_OUTPUT_SYNCHRONOUS:
 105       st_update_debug_callback(st);
 106       break;
 107    default:
 108       break;
 109    }
 110 }
 111
 112
 113 /**
 114  * Called via ctx->Driver.QueryMemoryInfo()
 115  */
 116 static void
 117 st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
 118 {
 119    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 120    struct pipe_memory_info info;
 121
 122    assert(screen->query_memory_info);
 123    if (!screen->query_memory_info)
 124       return;
 125
 126    screen->query_memory_info(screen, &info);
 127
 128    out->total_device_memory = info.total_device_memory;
 129    out->avail_device_memory = info.avail_device_memory;
 130    out->total_staging_memory = info.total_staging_memory;
 131    out->avail_staging_memory = info.avail_staging_memory;
 132    out->device_memory_evicted = info.device_memory_evicted;
 133    out->nr_device_memory_evictions = info.nr_device_memory_evictions;
 134 }
 135
 136
 137 static uint64_t
 138 st_get_active_states(struct gl_context *ctx)
 139 {
 140    struct st_vertex_program *vp =
 141       st_vertex_program(ctx->VertexProgram._Current);
 142    struct st_common_program *tcp =
 143       st_common_program(ctx->TessCtrlProgram._Current);
 144    struct st_common_program *tep =
 145       st_common_program(ctx->TessEvalProgram._Current);
 146    struct st_common_program *gp =
 147       st_common_program(ctx->GeometryProgram._Current);
 148    struct st_fragment_program *fp =
 149       st_fragment_program(ctx->FragmentProgram._Current);
 150    struct st_compute_program *cp =
 151       st_compute_program(ctx->ComputeProgram._Current);
 152    uint64_t active_shader_states = 0;
 153
 154    if (vp)
 155       active_shader_states |= vp->affected_states;
 156    if (tcp)
 157       active_shader_states |= tcp->affected_states;
 158    if (tep)
 159       active_shader_states |= tep->affected_states;
 160    if (gp)
 161       active_shader_states |= gp->affected_states;
 162    if (fp)
 163       active_shader_states |= fp->affected_states;
 164    if (cp)
 165       active_shader_states |= cp->affected_states;
 166
 167    /* Mark non-shader-resource shader states as "always active". */
 168    return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
 169 }
 170
 171
 172 void
 173 st_invalidate_buffers(struct st_context *st)
 174 {
 175    st->dirty |= ST_NEW_BLEND |
 176                 ST_NEW_DSA |
 177                 ST_NEW_FB_STATE |
 178                 ST_NEW_SAMPLE_STATE |
 179                 ST_NEW_SAMPLE_SHADING |
 180                 ST_NEW_FS_STATE |
 181                 ST_NEW_POLY_STIPPLE |
 182                 ST_NEW_VIEWPORT |
 183                 ST_NEW_RASTERIZER |
 184                 ST_NEW_SCISSOR |
 185                 ST_NEW_WINDOW_RECTANGLES;
 186 }
 187
 188
 189 static inline bool
 190 st_vp_uses_current_values(const struct gl_context *ctx)
 191 {
 192    const uint64_t inputs = ctx->VertexProgram._Current->info.inputs_read;
 193    return _mesa_draw_current_bits(ctx) & inputs;
 194 }
 195
 196
 197 /**
 198  * Called via ctx->Driver.UpdateState()
 199  */
 200 static void
 201 st_invalidate_state(struct gl_context *ctx)
 202 {
 203    GLbitfield new_state = ctx->NewState;
 204    struct st_context *st = st_context(ctx);
 205
 206    if (new_state & _NEW_BUFFERS) {
 207       st_invalidate_buffers(st);
 208    } else {
 209       /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
 210        * check them when _NEW_BUFFERS isn't set.
 211        */
 212       if (new_state & _NEW_PROGRAM)
 213          st->dirty |= ST_NEW_RASTERIZER;
 214
 215       if (new_state & _NEW_FOG)
 216          st->dirty |= ST_NEW_FS_STATE;
 217
 218       if (new_state & _NEW_FRAG_CLAMP) {
 219          if (st->clamp_frag_color_in_shader)
 220             st->dirty |= ST_NEW_FS_STATE;
 221          else
 222             st->dirty |= ST_NEW_RASTERIZER;
 223       }
 224    }
 225
 226    if (new_state & (_NEW_LIGHT |
 227                     _NEW_POINT))
 228       st->dirty |= ST_NEW_RASTERIZER;
 229
 230    if (new_state & _NEW_PROJECTION &&
 231        st_user_clip_planes_enabled(ctx))
 232       st->dirty |= ST_NEW_CLIP_STATE;
 233
 234    if (new_state & _NEW_PIXEL)
 235       st->dirty |= ST_NEW_PIXEL_TRANSFER;
 236
 237    if (new_state & _NEW_CURRENT_ATTRIB && st_vp_uses_current_values(ctx))
 238       st->dirty |= ST_NEW_VERTEX_ARRAYS;
 239
 240    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 241    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
 242       st->dirty |= ST_NEW_VS_STATE;
 243       if (st->ctx->API == API_OPENGL_COMPAT && ctx->Version >= 32) {
 244          st->dirty |= ST_NEW_GS_STATE | ST_NEW_TES_STATE;
 245       }
 246    }
 247
 248    /* Which shaders are dirty will be determined manually. */
 249    if (new_state & _NEW_PROGRAM) {
 250       st->gfx_shaders_may_be_dirty = true;
 251       st->compute_shader_may_be_dirty = true;
 252       /* This will mask out unused shader resources. */
 253       st->active_states = st_get_active_states(ctx);
 254    }
 255
 256    if (new_state & _NEW_TEXTURE_OBJECT) {
 257       st->dirty |= st->active_states &
 258                    (ST_NEW_SAMPLER_VIEWS |
 259                     ST_NEW_SAMPLERS |
 260                     ST_NEW_IMAGE_UNITS);
 261       if (ctx->FragmentProgram._Current &&
 262           ctx->FragmentProgram._Current->ExternalSamplersUsed) {
 263          st->dirty |= ST_NEW_FS_STATE;
 264       }
 265    }
 266 }
 267
 268
 269 /*
 270  * In some circumstances (such as running google-chrome) the state
 271  * tracker may try to delete a resource view from a context different
 272  * than when it was created.  We don't want to do that.
 273  *
 274  * In that situation, st_texture_release_all_sampler_views() calls this
 275  * function to transfer the sampler view reference to this context (expected
 276  * to be the context which created the view.)
 277  */
 278 void
 279 st_save_zombie_sampler_view(struct st_context *st,
 280                             struct pipe_sampler_view *view)
 281 {
 282    struct st_zombie_sampler_view_node *entry;
 283
 284    assert(view->context == st->pipe);
 285
 286    entry = MALLOC_STRUCT(st_zombie_sampler_view_node);
 287    if (!entry)
 288       return;
 289
 290    entry->view = view;
 291
 292    /* We need a mutex since this function may be called from one thread
 293     * while free_zombie_resource_views() is called from another.
 294     */
 295    mtx_lock(&st->zombie_sampler_views.mutex);
 296    LIST_ADDTAIL(&entry->node, &st->zombie_sampler_views.list.node);
 297    mtx_unlock(&st->zombie_sampler_views.mutex);
 298 }
 299
 300
 301 /*
 302  * Since OpenGL shaders may be shared among contexts, we can wind up
 303  * with variants of a shader created with different contexts.
 304  * When we go to destroy a gallium shader, we want to free it with the
 305  * same context that it was created with, unless the driver reports
 306  * PIPE_CAP_SHAREABLE_SHADERS = TRUE.
 307  */
 308 void
 309 st_save_zombie_shader(struct st_context *st,
 310                       enum pipe_shader_type type,
 311                       struct pipe_shader_state *shader)
 312 {
 313    struct st_zombie_shader_node *entry;
 314
 315    /* we shouldn't be here if the driver supports shareable shaders */
 316    assert(!st->has_shareable_shaders);
 317
 318    entry = MALLOC_STRUCT(st_zombie_shader_node);
 319    if (!entry)
 320       return;
 321
 322    entry->shader = shader;
 323    entry->type = type;
 324
 325    /* We need a mutex since this function may be called from one thread
 326     * while free_zombie_shaders() is called from another.
 327     */
 328    mtx_lock(&st->zombie_shaders.mutex);
 329    LIST_ADDTAIL(&entry->node, &st->zombie_shaders.list.node);
 330    mtx_unlock(&st->zombie_shaders.mutex);
 331 }
 332
 333
 334 /*
 335  * Free any zombie sampler views that may be attached to this context.
 336  */
 337 static void
 338 free_zombie_sampler_views(struct st_context *st)
 339 {
 340    struct st_zombie_sampler_view_node *entry, *next;
 341
 342    if (LIST_IS_EMPTY(&st->zombie_sampler_views.list.node)) {
 343       return;
 344    }
 345
 346    mtx_lock(&st->zombie_sampler_views.mutex);
 347
 348    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 349                             &st->zombie_sampler_views.list.node, node) {
 350       LIST_DEL(&entry->node);  // remove this entry from the list
 351
 352       assert(entry->view->context == st->pipe);
 353       pipe_sampler_view_reference(&entry->view, NULL);
 354
 355       free(entry);
 356    }
 357
 358    assert(LIST_IS_EMPTY(&st->zombie_sampler_views.list.node));
 359
 360    mtx_unlock(&st->zombie_sampler_views.mutex);
 361 }
 362
 363
 364 /*
 365  * Free any zombie shaders that may be attached to this context.
 366  */
 367 static void
 368 free_zombie_shaders(struct st_context *st)
 369 {
 370    struct st_zombie_shader_node *entry, *next;
 371
 372    if (LIST_IS_EMPTY(&st->zombie_shaders.list.node)) {
 373       return;
 374    }
 375
 376    mtx_lock(&st->zombie_shaders.mutex);
 377
 378    LIST_FOR_EACH_ENTRY_SAFE(entry, next,
 379                             &st->zombie_shaders.list.node, node) {
 380       LIST_DEL(&entry->node);  // remove this entry from the list
 381
 382       switch (entry->type) {
 383       case PIPE_SHADER_VERTEX:
 384          cso_delete_vertex_shader(st->cso_context, entry->shader);
 385          break;
 386       case PIPE_SHADER_FRAGMENT:
 387          cso_delete_fragment_shader(st->cso_context, entry->shader);
 388          break;
 389       case PIPE_SHADER_GEOMETRY:
 390          cso_delete_geometry_shader(st->cso_context, entry->shader);
 391          break;
 392       case PIPE_SHADER_TESS_CTRL:
 393          cso_delete_tessctrl_shader(st->cso_context, entry->shader);
 394          break;
 395       case PIPE_SHADER_TESS_EVAL:
 396          cso_delete_tesseval_shader(st->cso_context, entry->shader);
 397          break;
 398       case PIPE_SHADER_COMPUTE:
 399          cso_delete_compute_shader(st->cso_context, entry->shader);
 400          break;
 401       default:
 402          unreachable("invalid shader type in free_zombie_shaders()");
 403       }
 404       free(entry);
 405    }
 406
 407    assert(LIST_IS_EMPTY(&st->zombie_shaders.list.node));
 408
 409    mtx_unlock(&st->zombie_shaders.mutex);
 410 }
 411
 412
 413 /*
 414  * This function is called periodically to free any zombie objects
 415  * which are attached to this context.
 416  */
 417 void
 418 st_context_free_zombie_objects(struct st_context *st)
 419 {
 420    free_zombie_sampler_views(st);
 421    free_zombie_shaders(st);
 422 }
 423
 424
 425 static void
 426 st_destroy_context_priv(struct st_context *st, bool destroy_pipe)
 427 {
 428    uint i;
 429
 430    st_destroy_atoms(st);
 431    st_destroy_draw(st);
 432    st_destroy_clear(st);
 433    st_destroy_bitmap(st);
 434    st_destroy_drawpix(st);
 435    st_destroy_drawtex(st);
 436    st_destroy_perfmon(st);
 437    st_destroy_pbo_helpers(st);
 438    st_destroy_bound_texture_handles(st);
 439    st_destroy_bound_image_handles(st);
 440
 441    for (i = 0; i < ARRAY_SIZE(st->state.frag_sampler_views); i++) {
 442       pipe_sampler_view_reference(&st->state.frag_sampler_views[i], NULL);
 443    }
 444
 445    /* free glReadPixels cache data */
 446    st_invalidate_readpix_cache(st);
 447    util_throttle_deinit(st->pipe->screen, &st->throttle);
 448
 449    cso_destroy_context(st->cso_context);
 450
 451    if (st->pipe && destroy_pipe)
 452       st->pipe->destroy(st->pipe);
 453
 454    free(st);
 455 }
 456
 457
 458 static void
 459 st_init_driver_flags(struct st_context *st)
 460 {
 461    struct gl_driver_flags *f = &st->ctx->DriverFlags;
 462
 463    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 464    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 465    f->NewTileRasterOrder = ST_NEW_RASTERIZER;
 466    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 467    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 468
 469    /* Shader resources */
 470    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 471    if (st->has_hw_atomics)
 472       f->NewAtomicBuffer = ST_NEW_HW_ATOMICS | ST_NEW_CS_ATOMICS;
 473    else
 474       f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
 475    f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
 476    f->NewImageUnits = ST_NEW_IMAGE_UNITS;
 477
 478    f->NewShaderConstants[MESA_SHADER_VERTEX] = ST_NEW_VS_CONSTANTS;
 479    f->NewShaderConstants[MESA_SHADER_TESS_CTRL] = ST_NEW_TCS_CONSTANTS;
 480    f->NewShaderConstants[MESA_SHADER_TESS_EVAL] = ST_NEW_TES_CONSTANTS;
 481    f->NewShaderConstants[MESA_SHADER_GEOMETRY] = ST_NEW_GS_CONSTANTS;
 482    f->NewShaderConstants[MESA_SHADER_FRAGMENT] = ST_NEW_FS_CONSTANTS;
 483    f->NewShaderConstants[MESA_SHADER_COMPUTE] = ST_NEW_CS_CONSTANTS;
 484
 485    f->NewWindowRectangles = ST_NEW_WINDOW_RECTANGLES;
 486    f->NewFramebufferSRGB = ST_NEW_FB_STATE;
 487    f->NewScissorRect = ST_NEW_SCISSOR;
 488    f->NewScissorTest = ST_NEW_SCISSOR | ST_NEW_RASTERIZER;
 489    f->NewAlphaTest = ST_NEW_DSA;
 490    f->NewBlend = ST_NEW_BLEND;
 491    f->NewBlendColor = ST_NEW_BLEND_COLOR;
 492    f->NewColorMask = ST_NEW_BLEND;
 493    f->NewDepth = ST_NEW_DSA;
 494    f->NewLogicOp = ST_NEW_BLEND;
 495    f->NewStencil = ST_NEW_DSA;
 496    f->NewMultisampleEnable = ST_NEW_BLEND | ST_NEW_RASTERIZER |
 497                              ST_NEW_SAMPLE_STATE | ST_NEW_SAMPLE_SHADING;
 498    f->NewSampleAlphaToXEnable = ST_NEW_BLEND;
 499    f->NewSampleMask = ST_NEW_SAMPLE_STATE;
 500    f->NewSampleLocations = ST_NEW_SAMPLE_STATE;
 501    f->NewSampleShading = ST_NEW_SAMPLE_SHADING;
 502
 503    /* This depends on what the gallium driver wants. */
 504    if (st->force_persample_in_shader) {
 505       f->NewMultisampleEnable |= ST_NEW_FS_STATE;
 506       f->NewSampleShading |= ST_NEW_FS_STATE;
 507    } else {
 508       f->NewSampleShading |= ST_NEW_RASTERIZER;
 509    }
 510
 511    f->NewClipControl = ST_NEW_VIEWPORT | ST_NEW_RASTERIZER;
 512    f->NewClipPlane = ST_NEW_CLIP_STATE;
 513    f->NewClipPlaneEnable = ST_NEW_RASTERIZER;
 514    f->NewDepthClamp = ST_NEW_RASTERIZER;
 515    f->NewLineState = ST_NEW_RASTERIZER;
 516    f->NewPolygonState = ST_NEW_RASTERIZER;
 517    f->NewPolygonStipple = ST_NEW_POLY_STIPPLE;
 518    f->NewViewport = ST_NEW_VIEWPORT;
 519    f->NewNvConservativeRasterization = ST_NEW_RASTERIZER;
 520    f->NewNvConservativeRasterizationParams = ST_NEW_RASTERIZER;
 521    f->NewIntelConservativeRasterization = ST_NEW_RASTERIZER;
 522 }
 523
 524
 525 static struct st_context *
 526 st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
 527                        const struct st_config_options *options, bool no_error)
 528 {
 529    struct pipe_screen *screen = pipe->screen;
 530    uint i;
 531    struct st_context *st = ST_CALLOC_STRUCT( st_context);
 532
 533    st->options = *options;
 534
 535    ctx->st = st;
 536
 537    st->ctx = ctx;
 538    st->pipe = pipe;
 539
 540    /* state tracker needs the VBO module */
 541    _vbo_CreateContext(ctx);
 542
 543    st->dirty = ST_ALL_STATES_MASK;
 544
 545    st->can_bind_const_buffer_as_vertex =
 546       screen->get_param(screen, PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX);
 547
 548    /* st/mesa always uploads zero-stride vertex attribs, and other user
 549     * vertex buffers are only possible with a compatibility profile.
 550     * So tell the u_vbuf module that user VBOs are not possible with the Core
 551     * profile, so that u_vbuf is bypassed completely if there is nothing else
 552     * to do.
 553     */
 554    unsigned vbuf_flags =
 555       ctx->API == API_OPENGL_CORE ? U_VBUF_FLAG_NO_USER_VBOS : 0;
 556    st->cso_context = cso_create_context(pipe, vbuf_flags);
 557
 558    st_init_atoms(st);
 559    st_init_clear(st);
 560    st_init_pbo_helpers(st);
 561
 562    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 563    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 564       st->internal_target = PIPE_TEXTURE_2D;
 565    else
 566       st->internal_target = PIPE_TEXTURE_RECT;
 567
 568    /* Setup vertex element info for 'struct st_util_vertex'.
 569     */
 570    {
 571       STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
 572
 573       memset(&st->util_velems, 0, sizeof(st->util_velems));
 574       st->util_velems[0].src_offset = 0;
 575       st->util_velems[0].vertex_buffer_index = 0;
 576       st->util_velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
 577       st->util_velems[1].src_offset = 3 * sizeof(float);
 578       st->util_velems[1].vertex_buffer_index = 0;
 579       st->util_velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 580       st->util_velems[2].src_offset = 7 * sizeof(float);
 581       st->util_velems[2].vertex_buffer_index = 0;
 582       st->util_velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
 583    }
 584
 585    /* we want all vertex data to be placed in buffer objects */
 586    vbo_use_buffer_objects(ctx);
 587
 588
 589    /* make sure that no VBOs are left mapped when we're drawing. */
 590    vbo_always_unmap_buffers(ctx);
 591
 592    /* Need these flags:
 593     */
 594    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 595
 596    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 597
 598    if (no_error)
 599       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 600
 601    ctx->Const.PackedDriverUniformStorage =
 602       screen->get_param(screen, PIPE_CAP_PACKED_UNIFORMS);
 603
 604    st->has_stencil_export =
 605       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 606    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 607    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 608                                               PIPE_TEXTURE_2D, 0, 0,
 609                                               PIPE_BIND_SAMPLER_VIEW);
 610    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 611                                               PIPE_TEXTURE_2D, 0, 0,
 612                                               PIPE_BIND_SAMPLER_VIEW);
 613    st->has_astc_2d_ldr =
 614       screen->is_format_supported(screen, PIPE_FORMAT_ASTC_4x4_SRGB,
 615                                   PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW);
 616    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 617                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 618    st->force_persample_in_shader =
 619       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 620       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 621    st->has_shareable_shaders = screen->get_param(screen,
 622                                                  PIPE_CAP_SHAREABLE_SHADERS);
 623    st->needs_texcoord_semantic =
 624       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 625    st->apply_texture_swizzle_to_border_color =
 626       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 627          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 628           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 629    st->has_time_elapsed =
 630       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 631    st->has_half_float_packing =
 632       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 633    st->has_multi_draw_indirect =
 634       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 635    st->has_single_pipe_stat =
 636       screen->get_param(screen, PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE);
 637    st->has_indep_blend_func =
 638       screen->get_param(screen, PIPE_CAP_INDEP_BLEND_FUNC);
 639    st->needs_rgb_dst_alpha_override =
 640       screen->get_param(screen, PIPE_CAP_RGB_OVERRIDE_DST_ALPHA_BLEND);
 641
 642    st->has_hw_atomics =
 643       screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
 644                                PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS)
 645       ? true : false;
 646
 647    util_throttle_init(&st->throttle,
 648                       screen->get_param(screen,
 649                                         PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET));
 650
 651    /* GL limits and extensions */
 652    st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions);
 653    st_init_extensions(pipe->screen, &ctx->Const,
 654                       &ctx->Extensions, &st->options, ctx->API);
 655
 656    if (st_have_perfmon(st)) {
 657       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 658    }
 659
 660    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 661    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 662       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 663          st->clamp_vert_color_in_shader = GL_TRUE;
 664       }
 665
 666       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 667          st->clamp_frag_color_in_shader = GL_TRUE;
 668       }
 669
 670       /* For drivers which cannot do color clamping, it's better to just
 671        * disable ARB_color_buffer_float in the core profile, because
 672        * the clamping is deprecated there anyway. */
 673       if (ctx->API == API_OPENGL_CORE &&
 674           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 675          st->clamp_vert_color_in_shader = GL_FALSE;
 676          st->clamp_frag_color_in_shader = GL_FALSE;
 677          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 678       }
 679    }
 680
 681    /* called after _mesa_create_context/_mesa_init_point, fix default user
 682     * settable max point size up
 683     */
 684    ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 685                              ctx->Const.MaxPointSizeAA);
 686    /* For vertex shaders, make sure not to emit saturate when SM 3.0
 687     * is not supported
 688     */
 689    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat =
 690       !st->has_shader_model3;
 691
 692    if (!ctx->Extensions.ARB_gpu_shader5) {
 693       for (i = 0; i < MESA_SHADER_STAGES; i++)
 694          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 695    }
 696
 697    /* Set which shader types can be compiled at link time. */
 698    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 699          st->has_shareable_shaders &&
 700          !st->clamp_vert_color_in_shader;
 701
 702    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 703          st->has_shareable_shaders &&
 704          !st->clamp_frag_color_in_shader &&
 705          !st->force_persample_in_shader;
 706
 707    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 708    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] =
 709          st->has_shareable_shaders &&
 710          !st->clamp_vert_color_in_shader;
 711    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] =
 712          st->has_shareable_shaders &&
 713          !st->clamp_vert_color_in_shader;
 714    st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
 715
 716    st->bitmap.cache.empty = true;
 717
 718    _mesa_override_extensions(ctx);
 719    _mesa_compute_version(ctx);
 720
 721    if (ctx->Version == 0) {
 722       /* This can happen when a core profile was requested, but the driver
 723        * does not support some features of GL 3.1 or later.
 724        */
 725       st_destroy_context_priv(st, false);
 726       return NULL;
 727    }
 728
 729    _mesa_initialize_dispatch_tables(ctx);
 730    _mesa_initialize_vbo_vtxfmt(ctx);
 731    st_init_driver_flags(st);
 732
 733    /* Initialize context's winsys buffers list */
 734    LIST_INITHEAD(&st->winsys_buffers);
 735
 736    LIST_INITHEAD(&st->zombie_sampler_views.list.node);
 737    mtx_init(&st->zombie_sampler_views.mutex, mtx_plain);
 738    LIST_INITHEAD(&st->zombie_shaders.list.node);
 739    mtx_init(&st->zombie_shaders.mutex, mtx_plain);
 740
 741    return st;
 742 }
 743
 744
 745 static void
 746 st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
 747 {
 748    struct st_context *st = ctx->st;
 749    st->pipe->emit_string_marker(st->pipe, string, len);
 750 }
 751
 752
 753 static void
 754 st_set_background_context(struct gl_context *ctx,
 755                           struct util_queue_monitoring *queue_info)
 756 {
 757    struct st_context *st = ctx->st;
 758    struct st_manager *smapi =
 759       (struct st_manager *) st->iface.st_context_private;
 760
 761    assert(smapi->set_background_context);
 762    smapi->set_background_context(&st->iface, queue_info);
 763 }
 764
 765
 766 static void
 767 st_get_device_uuid(struct gl_context *ctx, char *uuid)
 768 {
 769    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 770
 771    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 772    memset(uuid, 0, GL_UUID_SIZE_EXT);
 773    screen->get_device_uuid(screen, uuid);
 774 }
 775
 776
 777 static void
 778 st_get_driver_uuid(struct gl_context *ctx, char *uuid)
 779 {
 780    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 781
 782    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 783    memset(uuid, 0, GL_UUID_SIZE_EXT);
 784    screen->get_driver_uuid(screen, uuid);
 785 }
 786
 787
 788 static void
 789 st_init_driver_functions(struct pipe_screen *screen,
 790                          struct dd_function_table *functions)
 791 {
 792    _mesa_init_sampler_object_functions(functions);
 793
 794    st_init_draw_functions(functions);
 795    st_init_blit_functions(functions);
 796    st_init_bufferobject_functions(screen, functions);
 797    st_init_clear_functions(functions);
 798    st_init_bitmap_functions(functions);
 799    st_init_copy_image_functions(functions);
 800    st_init_drawpixels_functions(functions);
 801    st_init_rasterpos_functions(functions);
 802
 803    st_init_drawtex_functions(functions);
 804
 805    st_init_eglimage_functions(functions);
 806
 807    st_init_fbo_functions(functions);
 808    st_init_feedback_functions(functions);
 809    st_init_memoryobject_functions(functions);
 810    st_init_msaa_functions(functions);
 811    st_init_perfmon_functions(functions);
 812    st_init_program_functions(functions);
 813    st_init_query_functions(functions);
 814    st_init_cond_render_functions(functions);
 815    st_init_readpixels_functions(functions);
 816    st_init_semaphoreobject_functions(functions);
 817    st_init_texture_functions(functions);
 818    st_init_texture_barrier_functions(functions);
 819    st_init_flush_functions(screen, functions);
 820    st_init_string_functions(functions);
 821    st_init_viewport_functions(functions);
 822    st_init_compute_functions(functions);
 823
 824    st_init_xformfb_functions(functions);
 825    st_init_syncobj_functions(functions);
 826
 827    st_init_vdpau_functions(functions);
 828
 829    if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
 830       functions->EmitStringMarker = st_emit_string_marker;
 831
 832    functions->Enable = st_Enable;
 833    functions->UpdateState = st_invalidate_state;
 834    functions->QueryMemoryInfo = st_query_memory_info;
 835    functions->SetBackgroundContext = st_set_background_context;
 836    functions->GetDriverUuid = st_get_driver_uuid;
 837    functions->GetDeviceUuid = st_get_device_uuid;
 838
 839    /* GL_ARB_get_program_binary */
 840    functions->GetProgramBinaryDriverSHA1 = st_get_program_binary_driver_sha1;
 841
 842    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
 843       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
 844                                PIPE_SHADER_CAP_PREFERRED_IR);
 845    if (preferred_ir == PIPE_SHADER_IR_NIR) {
 846       functions->ShaderCacheSerializeDriverBlob =  st_serialise_nir_program;
 847       functions->ProgramBinarySerializeDriverBlob =
 848          st_serialise_nir_program_binary;
 849       functions->ProgramBinaryDeserializeDriverBlob =
 850          st_deserialise_nir_program;
 851    } else {
 852       functions->ShaderCacheSerializeDriverBlob =  st_serialise_tgsi_program;
 853       functions->ProgramBinarySerializeDriverBlob =
 854          st_serialise_tgsi_program_binary;
 855       functions->ProgramBinaryDeserializeDriverBlob =
 856          st_deserialise_tgsi_program;
 857    }
 858 }
 859
 860
 861 struct st_context *
 862 st_create_context(gl_api api, struct pipe_context *pipe,
 863                   const struct gl_config *visual,
 864                   struct st_context *share,
 865                   const struct st_config_options *options,
 866                   bool no_error)
 867 {
 868    struct gl_context *ctx;
 869    struct gl_context *shareCtx = share ? share->ctx : NULL;
 870    struct dd_function_table funcs;
 871    struct st_context *st;
 872
 873    util_cpu_detect();
 874
 875    memset(&funcs, 0, sizeof(funcs));
 876    st_init_driver_functions(pipe->screen, &funcs);
 877
 878    ctx = calloc(1, sizeof(struct gl_context));
 879    if (!ctx)
 880       return NULL;
 881
 882    if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
 883       free(ctx);
 884       return NULL;
 885    }
 886
 887    st_debug_init();
 888
 889    if (pipe->screen->get_disk_shader_cache &&
 890        !(ST_DEBUG & DEBUG_TGSI))
 891       ctx->Cache = pipe->screen->get_disk_shader_cache(pipe->screen);
 892
 893    /* XXX: need a capability bit in gallium to query if the pipe
 894     * driver prefers DP4 or MUL/MAD for vertex transformation.
 895     */
 896    if (debug_get_option_mesa_mvp_dp4())
 897       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 898
 899    st = st_create_context_priv(ctx, pipe, options, no_error);
 900    if (!st) {
 901       _mesa_destroy_context(ctx);
 902    }
 903
 904    return st;
 905 }
 906
 907
 908 /**
 909  * When we destroy a context, we must examine all texture objects to
 910  * find/release any sampler views created by that context.
 911  *
 912  * This callback is called per-texture object.  It releases all the
 913  * texture's sampler views which belong to the context.
 914  */
 915 static void
 916 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 917 {
 918    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 919    struct st_context *st = (struct st_context *) userData;
 920
 921    st_texture_release_context_sampler_view(st, st_texture_object(texObj));
 922 }
 923
 924
 925 void
 926 st_destroy_context(struct st_context *st)
 927 {
 928    struct gl_context *ctx = st->ctx;
 929    struct st_framebuffer *stfb, *next;
 930    struct gl_framebuffer *save_drawbuffer;
 931    struct gl_framebuffer *save_readbuffer;
 932
 933    /* Save the current context and draw/read buffers*/
 934    GET_CURRENT_CONTEXT(save_ctx);
 935    if (save_ctx) {
 936       save_drawbuffer = save_ctx->WinSysDrawBuffer;
 937       save_readbuffer = save_ctx->WinSysReadBuffer;
 938    } else {
 939       save_drawbuffer = save_readbuffer = NULL;
 940    }
 941
 942    /*
 943     * We need to bind the context we're deleting so that
 944     * _mesa_reference_texobj_() uses this context when deleting textures.
 945     * Similarly for framebuffer objects, etc.
 946     */
 947    _mesa_make_current(ctx, NULL, NULL);
 948
 949    /* This must be called first so that glthread has a chance to finish */
 950    _mesa_glthread_destroy(ctx);
 951
 952    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 953
 954    /* For the fallback textures, free any sampler views belonging to this
 955     * context.
 956     */
 957    for (unsigned i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 958       struct st_texture_object *stObj =
 959          st_texture_object(ctx->Shared->FallbackTex[i]);
 960       if (stObj) {
 961          st_texture_release_context_sampler_view(st, stObj);
 962       }
 963    }
 964
 965    st_context_free_zombie_objects(st);
 966
 967    mtx_destroy(&st->zombie_sampler_views.mutex);
 968    mtx_destroy(&st->zombie_shaders.mutex);
 969
 970    st_reference_fragprog(st, &st->fp, NULL);
 971    st_reference_prog(st, &st->gp, NULL);
 972    st_reference_vertprog(st, &st->vp, NULL);
 973    st_reference_prog(st, &st->tcp, NULL);
 974    st_reference_prog(st, &st->tep, NULL);
 975    st_reference_compprog(st, &st->cp, NULL);
 976
 977    /* release framebuffer in the winsys buffers list */
 978    LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
 979       st_framebuffer_reference(&stfb, NULL);
 980    }
 981
 982    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
 983    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
 984
 985    _vbo_DestroyContext(ctx);
 986
 987    st_destroy_program_variants(st);
 988
 989    _mesa_free_context_data(ctx, false);
 990
 991    /* This will free the st_context too, so 'st' must not be accessed
 992     * afterwards. */
 993    st_destroy_context_priv(st, true);
 994    st = NULL;
 995
 996    /* This must be called after st_destroy_context_priv() to avoid a race
 997     * condition between any shader compiler threads and context destruction.
 998     */
 999    _mesa_destroy_shader_compiler_types();
1000
1001    free(ctx);
1002
1003    if (save_ctx == ctx) {
1004       /* unbind the context we just deleted */
1005       _mesa_make_current(NULL, NULL, NULL);
1006    } else {
1007       /* Restore the current context and draw/read buffers (may be NULL) */
1008       _mesa_make_current(save_ctx, save_drawbuffer, save_readbuffer);
1009    }
1010 }