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/samplerobj.h"
  33 #include "main/shaderobj.h"
  34 #include "main/version.h"
  35 #include "main/vtxfmt.h"
  36 #include "main/hash.h"
  37 #include "program/prog_cache.h"
  38 #include "vbo/vbo.h"
  39 #include "glapi/glapi.h"
  40 #include "st_context.h"
  41 #include "st_debug.h"
  42 #include "st_cb_bitmap.h"
  43 #include "st_cb_blit.h"
  44 #include "st_cb_bufferobjects.h"
  45 #include "st_cb_clear.h"
  46 #include "st_cb_compute.h"
  47 #include "st_cb_condrender.h"
  48 #include "st_cb_copyimage.h"
  49 #include "st_cb_drawpixels.h"
  50 #include "st_cb_rasterpos.h"
  51 #include "st_cb_drawtex.h"
  52 #include "st_cb_eglimage.h"
  53 #include "st_cb_fbo.h"
  54 #include "st_cb_feedback.h"
  55 #include "st_cb_msaa.h"
  56 #include "st_cb_perfmon.h"
  57 #include "st_cb_program.h"
  58 #include "st_cb_queryobj.h"
  59 #include "st_cb_readpixels.h"
  60 #include "st_cb_texture.h"
  61 #include "st_cb_xformfb.h"
  62 #include "st_cb_flush.h"
  63 #include "st_cb_syncobj.h"
  64 #include "st_cb_strings.h"
  65 #include "st_cb_texturebarrier.h"
  66 #include "st_cb_viewport.h"
  67 #include "st_atom.h"
  68 #include "st_draw.h"
  69 #include "st_extensions.h"
  70 #include "st_gen_mipmap.h"
  71 #include "st_pbo.h"
  72 #include "st_program.h"
  73 #include "st_vdpau.h"
  74 #include "st_texture.h"
  75 #include "pipe/p_context.h"
  76 #include "util/u_inlines.h"
  77 #include "util/u_upload_mgr.h"
  78 #include "cso_cache/cso_context.h"
  79
  80
  81 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  82
  83
  84 /**
  85  * Called via ctx->Driver.Enable()
  86  */
  87 static void st_Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
  88 {
  89    struct st_context *st = st_context(ctx);
  90
  91    switch (cap) {
  92    case GL_DEBUG_OUTPUT:
  93    case GL_DEBUG_OUTPUT_SYNCHRONOUS:
  94       st_update_debug_callback(st);
  95       break;
  96    default:
  97       break;
  98    }
  99 }
 100
 101
 102 /**
 103  * Called via ctx->Driver.QueryMemoryInfo()
 104  */
 105 static void
 106 st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
 107 {
 108    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 109    struct pipe_memory_info info;
 110
 111    assert(screen->query_memory_info);
 112    if (!screen->query_memory_info)
 113       return;
 114
 115    screen->query_memory_info(screen, &info);
 116
 117    out->total_device_memory = info.total_device_memory;
 118    out->avail_device_memory = info.avail_device_memory;
 119    out->total_staging_memory = info.total_staging_memory;
 120    out->avail_staging_memory = info.avail_staging_memory;
 121    out->device_memory_evicted = info.device_memory_evicted;
 122    out->nr_device_memory_evictions = info.nr_device_memory_evictions;
 123 }
 124
 125
 126 uint64_t
 127 st_get_active_states(struct gl_context *ctx)
 128 {
 129    struct st_vertex_program *vp =
 130       st_vertex_program(ctx->VertexProgram._Current);
 131    struct st_tessctrl_program *tcp =
 132       st_tessctrl_program(ctx->TessCtrlProgram._Current);
 133    struct st_tesseval_program *tep =
 134       st_tesseval_program(ctx->TessEvalProgram._Current);
 135    struct st_geometry_program *gp =
 136       st_geometry_program(ctx->GeometryProgram._Current);
 137    struct st_fragment_program *fp =
 138       st_fragment_program(ctx->FragmentProgram._Current);
 139    struct st_compute_program *cp =
 140       st_compute_program(ctx->ComputeProgram._Current);
 141    uint64_t active_shader_states = 0;
 142
 143    if (vp)
 144       active_shader_states |= vp->affected_states;
 145    if (tcp)
 146       active_shader_states |= tcp->affected_states;
 147    if (tep)
 148       active_shader_states |= tep->affected_states;
 149    if (gp)
 150       active_shader_states |= gp->affected_states;
 151    if (fp)
 152       active_shader_states |= fp->affected_states;
 153    if (cp)
 154       active_shader_states |= cp->affected_states;
 155
 156    /* Mark non-shader-resource shader states as "always active". */
 157    return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
 158 }
 159
 160
 161 /**
 162  * Called via ctx->Driver.UpdateState()
 163  */
 164 void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state)
 165 {
 166    struct st_context *st = st_context(ctx);
 167
 168    if (new_state & _NEW_BUFFERS) {
 169       st->dirty |= ST_NEW_DSA |
 170                    ST_NEW_FB_STATE |
 171                    ST_NEW_SAMPLE_MASK |
 172                    ST_NEW_SAMPLE_SHADING |
 173                    ST_NEW_FS_STATE |
 174                    ST_NEW_POLY_STIPPLE |
 175                    ST_NEW_VIEWPORT |
 176                    ST_NEW_RASTERIZER |
 177                    ST_NEW_SCISSOR |
 178                    ST_NEW_WINDOW_RECTANGLES;
 179    } else {
 180       /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
 181        * check them when _NEW_BUFFERS isn't set.
 182        */
 183       if (new_state & (_NEW_DEPTH |
 184                        _NEW_STENCIL))
 185          st->dirty |= ST_NEW_DSA;
 186
 187       if (new_state & _NEW_PROGRAM)
 188          st->dirty |= ST_NEW_RASTERIZER;
 189
 190       if (new_state & _NEW_SCISSOR)
 191          st->dirty |= ST_NEW_RASTERIZER |
 192                       ST_NEW_SCISSOR |
 193                       ST_NEW_WINDOW_RECTANGLES;
 194
 195       if (new_state & _NEW_FOG)
 196          st->dirty |= ST_NEW_FS_STATE;
 197
 198       if (new_state & _NEW_POLYGONSTIPPLE)
 199          st->dirty |= ST_NEW_POLY_STIPPLE;
 200
 201       if (new_state & _NEW_VIEWPORT)
 202          st->dirty |= ST_NEW_VIEWPORT;
 203
 204       if (new_state & _NEW_FRAG_CLAMP) {
 205          if (st->clamp_frag_color_in_shader)
 206             st->dirty |= ST_NEW_FS_STATE;
 207          else
 208             st->dirty |= ST_NEW_RASTERIZER;
 209       }
 210    }
 211
 212    if (new_state & _NEW_MULTISAMPLE) {
 213       st->dirty |= ST_NEW_BLEND |
 214                    ST_NEW_SAMPLE_MASK |
 215                    ST_NEW_SAMPLE_SHADING |
 216                    ST_NEW_RASTERIZER |
 217                    ST_NEW_FS_STATE;
 218    } else {
 219       /* These set a subset of flags set by _NEW_MULTISAMPLE, so we only
 220        * have to check them when _NEW_MULTISAMPLE isn't set.
 221        */
 222       if (new_state & (_NEW_LIGHT |
 223                        _NEW_LINE |
 224                        _NEW_POINT |
 225                        _NEW_POLYGON |
 226                        _NEW_TRANSFORM))
 227          st->dirty |= ST_NEW_RASTERIZER;
 228    }
 229
 230    if (new_state & (_NEW_PROJECTION |
 231                     _NEW_TRANSFORM) &&
 232        st_user_clip_planes_enabled(ctx))
 233       st->dirty |= ST_NEW_CLIP_STATE;
 234
 235    if (new_state & _NEW_COLOR)
 236       st->dirty |= ST_NEW_BLEND |
 237                    ST_NEW_DSA;
 238
 239    if (new_state & _NEW_PIXEL)
 240       st->dirty |= ST_NEW_PIXEL_TRANSFER;
 241
 242    if (new_state & _NEW_CURRENT_ATTRIB)
 243       st->dirty |= ST_NEW_VERTEX_ARRAYS;
 244
 245    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 246    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT))
 247       st->dirty |= ST_NEW_VS_STATE;
 248
 249    /* Which shaders are dirty will be determined manually. */
 250    if (new_state & _NEW_PROGRAM) {
 251       st->gfx_shaders_may_be_dirty = true;
 252       st->compute_shader_may_be_dirty = true;
 253       /* This will mask out unused shader resources. */
 254       st->active_states = st_get_active_states(ctx);
 255    }
 256
 257    if (new_state & _NEW_TEXTURE)
 258       st->dirty |= st->active_states &
 259                    (ST_NEW_SAMPLER_VIEWS |
 260                     ST_NEW_SAMPLERS |
 261                     ST_NEW_IMAGE_UNITS);
 262
 263    if (new_state & _NEW_PROGRAM_CONSTANTS)
 264       st->dirty |= st->active_states & ST_NEW_CONSTANTS;
 265
 266    /* This is the only core Mesa module we depend upon.
 267     * No longer use swrast, swsetup, tnl.
 268     */
 269    _vbo_InvalidateState(ctx, new_state);
 270 }
 271
 272
 273 static void
 274 st_destroy_context_priv(struct st_context *st)
 275 {
 276    uint shader, i;
 277
 278    st_destroy_atoms( st );
 279    st_destroy_draw( st );
 280    st_destroy_clear(st);
 281    st_destroy_bitmap(st);
 282    st_destroy_drawpix(st);
 283    st_destroy_drawtex(st);
 284    st_destroy_perfmon(st);
 285    st_destroy_pbo_helpers(st);
 286
 287    for (shader = 0; shader < ARRAY_SIZE(st->state.sampler_views); shader++) {
 288       for (i = 0; i < ARRAY_SIZE(st->state.sampler_views[0]); i++) {
 289          pipe_sampler_view_release(st->pipe,
 290                                    &st->state.sampler_views[shader][i]);
 291       }
 292    }
 293
 294    u_upload_destroy(st->uploader);
 295    if (st->indexbuf_uploader) {
 296       u_upload_destroy(st->indexbuf_uploader);
 297    }
 298    if (st->constbuf_uploader) {
 299       u_upload_destroy(st->constbuf_uploader);
 300    }
 301
 302    /* free glDrawPixels cache data */
 303    free(st->drawpix_cache.image);
 304    pipe_resource_reference(&st->drawpix_cache.texture, NULL);
 305
 306    /* free glReadPixels cache data */
 307    st_invalidate_readpix_cache(st);
 308
 309    cso_destroy_context(st->cso_context);
 310    free( st );
 311 }
 312
 313
 314 static struct st_context *
 315 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 316                 const struct st_config_options *options)
 317 {
 318    struct pipe_screen *screen = pipe->screen;
 319    uint i;
 320    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 321
 322    st->options = *options;
 323
 324    ctx->st = st;
 325
 326    st->ctx = ctx;
 327    st->pipe = pipe;
 328
 329    /* XXX: this is one-off, per-screen init: */
 330    st_debug_init();
 331
 332    /* state tracker needs the VBO module */
 333    _vbo_CreateContext(ctx);
 334
 335    st->dirty = ST_ALL_STATES_MASK;
 336
 337    /* Create upload manager for vertex data for glBitmap, glDrawPixels,
 338     * glClear, etc.
 339     */
 340    st->uploader = u_upload_create(pipe, 65536, PIPE_BIND_VERTEX_BUFFER,
 341                                   PIPE_USAGE_STREAM);
 342
 343    if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
 344       st->indexbuf_uploader = u_upload_create(pipe, 128 * 1024,
 345                                               PIPE_BIND_INDEX_BUFFER,
 346                                               PIPE_USAGE_STREAM);
 347    }
 348
 349    if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS))
 350       st->constbuf_uploader = u_upload_create(pipe, 128 * 1024,
 351                                               PIPE_BIND_CONSTANT_BUFFER,
 352                                               PIPE_USAGE_STREAM);
 353
 354    st->cso_context = cso_create_context(pipe);
 355
 356    st_init_atoms( st );
 357    st_init_clear(st);
 358    st_init_draw( st );
 359    st_init_pbo_helpers(st);
 360
 361    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 362    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 363       st->internal_target = PIPE_TEXTURE_2D;
 364    else
 365       st->internal_target = PIPE_TEXTURE_RECT;
 366
 367    /* Setup vertex element info for 'struct st_util_vertex'.
 368     */
 369    {
 370       const unsigned slot = cso_get_aux_vertex_buffer_slot(st->cso_context);
 371
 372       /* If this assertion ever fails all state tracker calls to
 373        * cso_get_aux_vertex_buffer_slot() should be audited.  This
 374        * particular call would have to be moved to just before each
 375        * drawing call.
 376        */
 377       assert(slot == 0);
 378
 379       STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
 380
 381       memset(&st->util_velems, 0, sizeof(st->util_velems));
 382       st->util_velems[0].src_offset = 0;
 383       st->util_velems[0].vertex_buffer_index = slot;
 384       st->util_velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
 385       st->util_velems[1].src_offset = 3 * sizeof(float);
 386       st->util_velems[1].vertex_buffer_index = slot;
 387       st->util_velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 388       st->util_velems[2].src_offset = 7 * sizeof(float);
 389       st->util_velems[2].vertex_buffer_index = slot;
 390       st->util_velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
 391    }
 392
 393    /* we want all vertex data to be placed in buffer objects */
 394    vbo_use_buffer_objects(ctx);
 395
 396
 397    /* make sure that no VBOs are left mapped when we're drawing. */
 398    vbo_always_unmap_buffers(ctx);
 399
 400    /* Need these flags:
 401     */
 402    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 403
 404    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 405
 406    st->has_stencil_export =
 407       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 408    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 409    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 410                                               PIPE_TEXTURE_2D, 0,
 411                                               PIPE_BIND_SAMPLER_VIEW);
 412    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 413                                               PIPE_TEXTURE_2D, 0,
 414                                               PIPE_BIND_SAMPLER_VIEW);
 415    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 416                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 417    st->force_persample_in_shader =
 418       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 419       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 420    st->has_shareable_shaders = screen->get_param(screen,
 421                                                  PIPE_CAP_SHAREABLE_SHADERS);
 422    st->needs_texcoord_semantic =
 423       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 424    st->apply_texture_swizzle_to_border_color =
 425       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 426          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 427           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 428    st->has_time_elapsed =
 429       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 430    st->has_half_float_packing =
 431       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 432    st->has_multi_draw_indirect =
 433       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 434
 435    /* GL limits and extensions */
 436    st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions);
 437    st_init_extensions(pipe->screen, &ctx->Const,
 438                       &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
 439
 440    if (st_have_perfmon(st)) {
 441       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 442    }
 443
 444    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 445    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 446       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 447          st->clamp_vert_color_in_shader = GL_TRUE;
 448       }
 449
 450       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 451          st->clamp_frag_color_in_shader = GL_TRUE;
 452       }
 453
 454       /* For drivers which cannot do color clamping, it's better to just
 455        * disable ARB_color_buffer_float in the core profile, because
 456        * the clamping is deprecated there anyway. */
 457       if (ctx->API == API_OPENGL_CORE &&
 458           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 459          st->clamp_vert_color_in_shader = GL_FALSE;
 460          st->clamp_frag_color_in_shader = GL_FALSE;
 461          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 462       }
 463    }
 464
 465    /* called after _mesa_create_context/_mesa_init_point, fix default user
 466     * settable max point size up
 467     */
 468    ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 469                              ctx->Const.MaxPointSizeAA);
 470    /* For vertex shaders, make sure not to emit saturate when SM 3.0 is not supported */
 471    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat = !st->has_shader_model3;
 472
 473    if (!ctx->Extensions.ARB_gpu_shader5) {
 474       for (i = 0; i < MESA_SHADER_STAGES; i++)
 475          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 476    }
 477
 478    /* Set which shader types can be compiled at link time. */
 479    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 480          st->has_shareable_shaders &&
 481          !st->clamp_vert_color_in_shader;
 482
 483    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 484          st->has_shareable_shaders &&
 485          !st->clamp_frag_color_in_shader &&
 486          !st->force_persample_in_shader;
 487
 488    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 489    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] = st->has_shareable_shaders;
 490    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] = st->has_shareable_shaders;
 491    st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
 492
 493    _mesa_compute_version(ctx);
 494
 495    if (ctx->Version == 0) {
 496       /* This can happen when a core profile was requested, but the driver
 497        * does not support some features of GL 3.1 or later.
 498        */
 499       st_destroy_context_priv(st);
 500       return NULL;
 501    }
 502
 503    _mesa_initialize_dispatch_tables(ctx);
 504    _mesa_initialize_vbo_vtxfmt(ctx);
 505
 506    return st;
 507 }
 508
 509 static void st_init_driver_flags(struct gl_driver_flags *f)
 510 {
 511    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 512    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 513    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 514    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 515    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 516    f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
 517    f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
 518    f->NewImageUnits = ST_NEW_IMAGE_UNITS;
 519 }
 520
 521 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 522                                      const struct gl_config *visual,
 523                                      struct st_context *share,
 524                                      const struct st_config_options *options)
 525 {
 526    struct gl_context *ctx;
 527    struct gl_context *shareCtx = share ? share->ctx : NULL;
 528    struct dd_function_table funcs;
 529    struct st_context *st;
 530
 531    memset(&funcs, 0, sizeof(funcs));
 532    st_init_driver_functions(pipe->screen, &funcs);
 533
 534    ctx = calloc(1, sizeof(struct gl_context));
 535    if (!ctx)
 536       return NULL;
 537
 538    if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
 539       free(ctx);
 540       return NULL;
 541    }
 542
 543    st_init_driver_flags(&ctx->DriverFlags);
 544
 545    /* XXX: need a capability bit in gallium to query if the pipe
 546     * driver prefers DP4 or MUL/MAD for vertex transformation.
 547     */
 548    if (debug_get_option_mesa_mvp_dp4())
 549       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 550
 551    st = st_create_context_priv(ctx, pipe, options);
 552    if (!st) {
 553       _mesa_destroy_context(ctx);
 554    }
 555
 556    return st;
 557 }
 558
 559
 560 /**
 561  * Callback to release the sampler view attached to a texture object.
 562  * Called by _mesa_HashWalk().
 563  */
 564 static void
 565 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 566 {
 567    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 568    struct st_context *st = (struct st_context *) userData;
 569
 570    st_texture_release_sampler_view(st, st_texture_object(texObj));
 571 }
 572
 573 void st_destroy_context( struct st_context *st )
 574 {
 575    struct pipe_context *pipe = st->pipe;
 576    struct gl_context *ctx = st->ctx;
 577    GLuint i;
 578
 579    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 580
 581    st_reference_fragprog(st, &st->fp, NULL);
 582    st_reference_geomprog(st, &st->gp, NULL);
 583    st_reference_vertprog(st, &st->vp, NULL);
 584    st_reference_tesscprog(st, &st->tcp, NULL);
 585    st_reference_tesseprog(st, &st->tep, NULL);
 586    st_reference_compprog(st, &st->cp, NULL);
 587
 588    /* release framebuffer surfaces */
 589    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 590       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 591    }
 592    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 593    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
 594    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
 595
 596    _vbo_DestroyContext(ctx);
 597
 598    st_destroy_program_variants(st);
 599
 600    _mesa_free_context_data(ctx);
 601
 602    /* This will free the st_context too, so 'st' must not be accessed
 603     * afterwards. */
 604    st_destroy_context_priv(st);
 605    st = NULL;
 606
 607    pipe->destroy( pipe );
 608
 609    free(ctx);
 610 }
 611
 612 static void
 613 st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
 614 {
 615    struct st_context *st = ctx->st;
 616    st->pipe->emit_string_marker(st->pipe, string, len);
 617 }
 618
 619 void st_init_driver_functions(struct pipe_screen *screen,
 620                               struct dd_function_table *functions)
 621 {
 622    _mesa_init_shader_object_functions(functions);
 623    _mesa_init_sampler_object_functions(functions);
 624
 625    st_init_blit_functions(functions);
 626    st_init_bufferobject_functions(screen, functions);
 627    st_init_clear_functions(functions);
 628    st_init_bitmap_functions(functions);
 629    st_init_copy_image_functions(functions);
 630    st_init_drawpixels_functions(functions);
 631    st_init_rasterpos_functions(functions);
 632
 633    st_init_drawtex_functions(functions);
 634
 635    st_init_eglimage_functions(functions);
 636
 637    st_init_fbo_functions(functions);
 638    st_init_feedback_functions(functions);
 639    st_init_msaa_functions(functions);
 640    st_init_perfmon_functions(functions);
 641    st_init_program_functions(functions);
 642    st_init_query_functions(functions);
 643    st_init_cond_render_functions(functions);
 644    st_init_readpixels_functions(functions);
 645    st_init_texture_functions(functions);
 646    st_init_texture_barrier_functions(functions);
 647    st_init_flush_functions(screen, functions);
 648    st_init_string_functions(functions);
 649    st_init_viewport_functions(functions);
 650    st_init_compute_functions(functions);
 651
 652    st_init_xformfb_functions(functions);
 653    st_init_syncobj_functions(functions);
 654
 655    st_init_vdpau_functions(functions);
 656
 657    if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
 658       functions->EmitStringMarker = st_emit_string_marker;
 659
 660    functions->Enable = st_Enable;
 661    functions->UpdateState = st_invalidate_state;
 662    functions->QueryMemoryInfo = st_query_memory_info;
 663 }