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 "pipe/p_context.h"
  82 #include "util/u_inlines.h"
  83 #include "util/u_upload_mgr.h"
  84 #include "util/u_vbuf.h"
  85 #include "cso_cache/cso_context.h"
  86
  87
  88 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  89
  90
  91 /**
  92  * Called via ctx->Driver.Enable()
  93  */
  94 static void
  95 st_Enable(struct gl_context *ctx, GLenum cap, GLboolean state)
  96 {
  97    struct st_context *st = st_context(ctx);
  98
  99    switch (cap) {
 100    case GL_DEBUG_OUTPUT:
 101    case GL_DEBUG_OUTPUT_SYNCHRONOUS:
 102       st_update_debug_callback(st);
 103       break;
 104    default:
 105       break;
 106    }
 107 }
 108
 109
 110 /**
 111  * Called via ctx->Driver.QueryMemoryInfo()
 112  */
 113 static void
 114 st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
 115 {
 116    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 117    struct pipe_memory_info info;
 118
 119    assert(screen->query_memory_info);
 120    if (!screen->query_memory_info)
 121       return;
 122
 123    screen->query_memory_info(screen, &info);
 124
 125    out->total_device_memory = info.total_device_memory;
 126    out->avail_device_memory = info.avail_device_memory;
 127    out->total_staging_memory = info.total_staging_memory;
 128    out->avail_staging_memory = info.avail_staging_memory;
 129    out->device_memory_evicted = info.device_memory_evicted;
 130    out->nr_device_memory_evictions = info.nr_device_memory_evictions;
 131 }
 132
 133
 134 uint64_t
 135 st_get_active_states(struct gl_context *ctx)
 136 {
 137    struct st_vertex_program *vp =
 138       st_vertex_program(ctx->VertexProgram._Current);
 139    struct st_common_program *tcp =
 140       st_common_program(ctx->TessCtrlProgram._Current);
 141    struct st_common_program *tep =
 142       st_common_program(ctx->TessEvalProgram._Current);
 143    struct st_common_program *gp =
 144       st_common_program(ctx->GeometryProgram._Current);
 145    struct st_fragment_program *fp =
 146       st_fragment_program(ctx->FragmentProgram._Current);
 147    struct st_compute_program *cp =
 148       st_compute_program(ctx->ComputeProgram._Current);
 149    uint64_t active_shader_states = 0;
 150
 151    if (vp)
 152       active_shader_states |= vp->affected_states;
 153    if (tcp)
 154       active_shader_states |= tcp->affected_states;
 155    if (tep)
 156       active_shader_states |= tep->affected_states;
 157    if (gp)
 158       active_shader_states |= gp->affected_states;
 159    if (fp)
 160       active_shader_states |= fp->affected_states;
 161    if (cp)
 162       active_shader_states |= cp->affected_states;
 163
 164    /* Mark non-shader-resource shader states as "always active". */
 165    return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
 166 }
 167
 168
 169 void
 170 st_invalidate_buffers(struct st_context *st)
 171 {
 172    st->dirty |= ST_NEW_BLEND |
 173                 ST_NEW_DSA |
 174                 ST_NEW_FB_STATE |
 175                 ST_NEW_SAMPLE_MASK |
 176                 ST_NEW_SAMPLE_SHADING |
 177                 ST_NEW_FS_STATE |
 178                 ST_NEW_POLY_STIPPLE |
 179                 ST_NEW_VIEWPORT |
 180                 ST_NEW_RASTERIZER |
 181                 ST_NEW_SCISSOR |
 182                 ST_NEW_WINDOW_RECTANGLES;
 183 }
 184
 185
 186 /**
 187  * Called via ctx->Driver.UpdateState()
 188  */
 189 static void
 190 st_invalidate_state(struct gl_context *ctx)
 191 {
 192    GLbitfield new_state = ctx->NewState;
 193    struct st_context *st = st_context(ctx);
 194
 195    if (new_state & _NEW_BUFFERS) {
 196       st_invalidate_buffers(st);
 197    } else {
 198       /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
 199        * check them when _NEW_BUFFERS isn't set.
 200        */
 201       if (new_state & _NEW_PROGRAM)
 202          st->dirty |= ST_NEW_RASTERIZER;
 203
 204       if (new_state & _NEW_FOG)
 205          st->dirty |= ST_NEW_FS_STATE;
 206
 207       if (new_state & _NEW_FRAG_CLAMP) {
 208          if (st->clamp_frag_color_in_shader)
 209             st->dirty |= ST_NEW_FS_STATE;
 210          else
 211             st->dirty |= ST_NEW_RASTERIZER;
 212       }
 213    }
 214
 215    if (new_state & (_NEW_LIGHT |
 216                     _NEW_POINT))
 217       st->dirty |= ST_NEW_RASTERIZER;
 218
 219    if (new_state & _NEW_PROJECTION &&
 220        st_user_clip_planes_enabled(ctx))
 221       st->dirty |= ST_NEW_CLIP_STATE;
 222
 223    if (new_state & _NEW_PIXEL)
 224       st->dirty |= ST_NEW_PIXEL_TRANSFER;
 225
 226    if (new_state & _NEW_CURRENT_ATTRIB)
 227       st->dirty |= ST_NEW_VERTEX_ARRAYS;
 228
 229    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 230    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT))
 231       st->dirty |= ST_NEW_VS_STATE;
 232
 233    /* Which shaders are dirty will be determined manually. */
 234    if (new_state & _NEW_PROGRAM) {
 235       st->gfx_shaders_may_be_dirty = true;
 236       st->compute_shader_may_be_dirty = true;
 237       /* This will mask out unused shader resources. */
 238       st->active_states = st_get_active_states(ctx);
 239    }
 240
 241    if (new_state & _NEW_TEXTURE_OBJECT) {
 242       st->dirty |= st->active_states &
 243                    (ST_NEW_SAMPLER_VIEWS |
 244                     ST_NEW_SAMPLERS |
 245                     ST_NEW_IMAGE_UNITS);
 246       if (ctx->FragmentProgram._Current &&
 247           ctx->FragmentProgram._Current->ExternalSamplersUsed) {
 248          st->dirty |= ST_NEW_FS_STATE;
 249       }
 250    }
 251 }
 252
 253
 254 static void
 255 st_destroy_context_priv(struct st_context *st, bool destroy_pipe)
 256 {
 257    uint i;
 258
 259    st_destroy_atoms(st);
 260    st_destroy_draw(st);
 261    st_destroy_clear(st);
 262    st_destroy_bitmap(st);
 263    st_destroy_drawpix(st);
 264    st_destroy_drawtex(st);
 265    st_destroy_perfmon(st);
 266    st_destroy_pbo_helpers(st);
 267    st_destroy_bound_texture_handles(st);
 268    st_destroy_bound_image_handles(st);
 269
 270    for (i = 0; i < ARRAY_SIZE(st->state.frag_sampler_views); i++) {
 271       pipe_sampler_view_release(st->pipe,
 272                                 &st->state.frag_sampler_views[i]);
 273    }
 274
 275    /* free glReadPixels cache data */
 276    st_invalidate_readpix_cache(st);
 277
 278    cso_destroy_context(st->cso_context);
 279
 280    if (st->pipe && destroy_pipe)
 281       st->pipe->destroy(st->pipe);
 282
 283    free(st);
 284 }
 285
 286
 287 static void
 288 st_init_driver_flags(struct st_context *st)
 289 {
 290    struct gl_driver_flags *f = &st->ctx->DriverFlags;
 291
 292    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 293    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 294    f->NewTileRasterOrder = ST_NEW_RASTERIZER;
 295    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 296    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 297
 298    /* Shader resources */
 299    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 300    if (st->has_hw_atomics)
 301       f->NewAtomicBuffer = ST_NEW_HW_ATOMICS | ST_NEW_CS_ATOMICS;
 302    else
 303       f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
 304    f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
 305    f->NewImageUnits = ST_NEW_IMAGE_UNITS;
 306
 307    f->NewShaderConstants[MESA_SHADER_VERTEX] = ST_NEW_VS_CONSTANTS;
 308    f->NewShaderConstants[MESA_SHADER_TESS_CTRL] = ST_NEW_TCS_CONSTANTS;
 309    f->NewShaderConstants[MESA_SHADER_TESS_EVAL] = ST_NEW_TES_CONSTANTS;
 310    f->NewShaderConstants[MESA_SHADER_GEOMETRY] = ST_NEW_GS_CONSTANTS;
 311    f->NewShaderConstants[MESA_SHADER_FRAGMENT] = ST_NEW_FS_CONSTANTS;
 312    f->NewShaderConstants[MESA_SHADER_COMPUTE] = ST_NEW_CS_CONSTANTS;
 313
 314    f->NewWindowRectangles = ST_NEW_WINDOW_RECTANGLES;
 315    f->NewFramebufferSRGB = ST_NEW_FB_STATE;
 316    f->NewScissorRect = ST_NEW_SCISSOR;
 317    f->NewScissorTest = ST_NEW_SCISSOR | ST_NEW_RASTERIZER;
 318    f->NewAlphaTest = ST_NEW_DSA;
 319    f->NewBlend = ST_NEW_BLEND;
 320    f->NewBlendColor = ST_NEW_BLEND_COLOR;
 321    f->NewColorMask = ST_NEW_BLEND;
 322    f->NewDepth = ST_NEW_DSA;
 323    f->NewLogicOp = ST_NEW_BLEND;
 324    f->NewStencil = ST_NEW_DSA;
 325    f->NewMultisampleEnable = ST_NEW_BLEND | ST_NEW_RASTERIZER |
 326                              ST_NEW_SAMPLE_MASK | ST_NEW_SAMPLE_SHADING;
 327    f->NewSampleAlphaToXEnable = ST_NEW_BLEND;
 328    f->NewSampleMask = ST_NEW_SAMPLE_MASK;
 329    f->NewSampleShading = ST_NEW_SAMPLE_SHADING;
 330
 331    /* This depends on what the gallium driver wants. */
 332    if (st->force_persample_in_shader) {
 333       f->NewMultisampleEnable |= ST_NEW_FS_STATE;
 334       f->NewSampleShading |= ST_NEW_FS_STATE;
 335    } else {
 336       f->NewSampleShading |= ST_NEW_RASTERIZER;
 337    }
 338
 339    f->NewClipControl = ST_NEW_VIEWPORT | ST_NEW_RASTERIZER;
 340    f->NewClipPlane = ST_NEW_CLIP_STATE;
 341    f->NewClipPlaneEnable = ST_NEW_RASTERIZER;
 342    f->NewDepthClamp = ST_NEW_RASTERIZER;
 343    f->NewLineState = ST_NEW_RASTERIZER;
 344    f->NewPolygonState = ST_NEW_RASTERIZER;
 345    f->NewPolygonStipple = ST_NEW_POLY_STIPPLE;
 346    f->NewViewport = ST_NEW_VIEWPORT;
 347    f->NewNvConservativeRasterization = ST_NEW_RASTERIZER;
 348    f->NewNvConservativeRasterizationParams = ST_NEW_RASTERIZER;
 349 }
 350
 351
 352 static struct st_context *
 353 st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
 354                        const struct st_config_options *options, bool no_error)
 355 {
 356    struct pipe_screen *screen = pipe->screen;
 357    uint i;
 358    struct st_context *st = ST_CALLOC_STRUCT( st_context);
 359
 360    st->options = *options;
 361
 362    ctx->st = st;
 363
 364    st->ctx = ctx;
 365    st->pipe = pipe;
 366
 367    /* state tracker needs the VBO module */
 368    _vbo_CreateContext(ctx);
 369
 370    st->dirty = ST_ALL_STATES_MASK;
 371
 372    st->can_bind_const_buffer_as_vertex =
 373       screen->get_param(screen, PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX);
 374
 375    /* st/mesa always uploads zero-stride vertex attribs, and other user
 376     * vertex buffers are only possible with a compatibility profile.
 377     * So tell the u_vbuf module that user VBOs are not possible with the Core
 378     * profile, so that u_vbuf is bypassed completely if there is nothing else
 379     * to do.
 380     */
 381    unsigned vbuf_flags =
 382       ctx->API == API_OPENGL_CORE ? U_VBUF_FLAG_NO_USER_VBOS : 0;
 383    st->cso_context = cso_create_context(pipe, vbuf_flags);
 384
 385    st_init_atoms(st);
 386    st_init_clear(st);
 387    st_init_pbo_helpers(st);
 388
 389    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 390    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 391       st->internal_target = PIPE_TEXTURE_2D;
 392    else
 393       st->internal_target = PIPE_TEXTURE_RECT;
 394
 395    /* Setup vertex element info for 'struct st_util_vertex'.
 396     */
 397    {
 398       const unsigned slot = cso_get_aux_vertex_buffer_slot(st->cso_context);
 399
 400       /* If this assertion ever fails all state tracker calls to
 401        * cso_get_aux_vertex_buffer_slot() should be audited.  This
 402        * particular call would have to be moved to just before each
 403        * drawing call.
 404        */
 405       assert(slot == 0);
 406
 407       STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
 408
 409       memset(&st->util_velems, 0, sizeof(st->util_velems));
 410       st->util_velems[0].src_offset = 0;
 411       st->util_velems[0].vertex_buffer_index = slot;
 412       st->util_velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
 413       st->util_velems[1].src_offset = 3 * sizeof(float);
 414       st->util_velems[1].vertex_buffer_index = slot;
 415       st->util_velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 416       st->util_velems[2].src_offset = 7 * sizeof(float);
 417       st->util_velems[2].vertex_buffer_index = slot;
 418       st->util_velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
 419    }
 420
 421    /* we want all vertex data to be placed in buffer objects */
 422    vbo_use_buffer_objects(ctx);
 423
 424
 425    /* make sure that no VBOs are left mapped when we're drawing. */
 426    vbo_always_unmap_buffers(ctx);
 427
 428    /* Need these flags:
 429     */
 430    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 431
 432    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 433
 434    if (no_error)
 435       ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 436
 437    ctx->Const.PackedDriverUniformStorage =
 438       screen->get_param(screen, PIPE_CAP_PACKED_UNIFORMS);
 439
 440    st->has_stencil_export =
 441       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 442    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 443    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 444                                               PIPE_TEXTURE_2D, 0,
 445                                               PIPE_BIND_SAMPLER_VIEW);
 446    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 447                                               PIPE_TEXTURE_2D, 0,
 448                                               PIPE_BIND_SAMPLER_VIEW);
 449    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 450                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 451    st->force_persample_in_shader =
 452       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 453       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 454    st->has_shareable_shaders = screen->get_param(screen,
 455                                                  PIPE_CAP_SHAREABLE_SHADERS);
 456    st->needs_texcoord_semantic =
 457       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 458    st->apply_texture_swizzle_to_border_color =
 459       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 460          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 461           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 462    st->has_time_elapsed =
 463       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 464    st->has_half_float_packing =
 465       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 466    st->has_multi_draw_indirect =
 467       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 468
 469    st->has_hw_atomics =
 470       screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
 471                                PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS)
 472       ? true : false;
 473
 474    /* GL limits and extensions */
 475    st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions, ctx->API);
 476    st_init_extensions(pipe->screen, &ctx->Const,
 477                       &ctx->Extensions, &st->options, ctx->API);
 478
 479    if (st_have_perfmon(st)) {
 480       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 481    }
 482
 483    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 484    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 485       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 486          st->clamp_vert_color_in_shader = GL_TRUE;
 487       }
 488
 489       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 490          st->clamp_frag_color_in_shader = GL_TRUE;
 491       }
 492
 493       /* For drivers which cannot do color clamping, it's better to just
 494        * disable ARB_color_buffer_float in the core profile, because
 495        * the clamping is deprecated there anyway. */
 496       if (ctx->API == API_OPENGL_CORE &&
 497           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 498          st->clamp_vert_color_in_shader = GL_FALSE;
 499          st->clamp_frag_color_in_shader = GL_FALSE;
 500          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 501       }
 502    }
 503
 504    /* called after _mesa_create_context/_mesa_init_point, fix default user
 505     * settable max point size up
 506     */
 507    ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 508                              ctx->Const.MaxPointSizeAA);
 509    /* For vertex shaders, make sure not to emit saturate when SM 3.0
 510     * is not supported
 511     */
 512    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat =
 513       !st->has_shader_model3;
 514
 515    if (!ctx->Extensions.ARB_gpu_shader5) {
 516       for (i = 0; i < MESA_SHADER_STAGES; i++)
 517          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 518    }
 519
 520    /* Set which shader types can be compiled at link time. */
 521    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 522          st->has_shareable_shaders &&
 523          !st->clamp_vert_color_in_shader;
 524
 525    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 526          st->has_shareable_shaders &&
 527          !st->clamp_frag_color_in_shader &&
 528          !st->force_persample_in_shader;
 529
 530    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 531    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] = st->has_shareable_shaders;
 532    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] = st->has_shareable_shaders;
 533    st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
 534
 535    st->bitmap.cache.empty = true;
 536
 537    _mesa_override_extensions(ctx);
 538    _mesa_compute_version(ctx);
 539
 540    if (ctx->Version == 0) {
 541       /* This can happen when a core profile was requested, but the driver
 542        * does not support some features of GL 3.1 or later.
 543        */
 544       st_destroy_context_priv(st, false);
 545       return NULL;
 546    }
 547
 548    _mesa_initialize_dispatch_tables(ctx);
 549    _mesa_initialize_vbo_vtxfmt(ctx);
 550    st_init_driver_flags(st);
 551
 552    /* Initialize context's winsys buffers list */
 553    LIST_INITHEAD(&st->winsys_buffers);
 554
 555    return st;
 556 }
 557
 558
 559 struct st_context *
 560 st_create_context(gl_api api, struct pipe_context *pipe,
 561                   const struct gl_config *visual,
 562                   struct st_context *share,
 563                   const struct st_config_options *options,
 564                   bool no_error)
 565 {
 566    struct gl_context *ctx;
 567    struct gl_context *shareCtx = share ? share->ctx : NULL;
 568    struct dd_function_table funcs;
 569    struct st_context *st;
 570
 571    memset(&funcs, 0, sizeof(funcs));
 572    st_init_driver_functions(pipe->screen, &funcs);
 573
 574    ctx = calloc(1, sizeof(struct gl_context));
 575    if (!ctx)
 576       return NULL;
 577
 578    if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
 579       free(ctx);
 580       return NULL;
 581    }
 582
 583    st_debug_init();
 584
 585    if (pipe->screen->get_disk_shader_cache &&
 586        !(ST_DEBUG & DEBUG_TGSI))
 587       ctx->Cache = pipe->screen->get_disk_shader_cache(pipe->screen);
 588
 589    /* XXX: need a capability bit in gallium to query if the pipe
 590     * driver prefers DP4 or MUL/MAD for vertex transformation.
 591     */
 592    if (debug_get_option_mesa_mvp_dp4())
 593       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 594
 595    st = st_create_context_priv(ctx, pipe, options, no_error);
 596    if (!st) {
 597       _mesa_destroy_context(ctx);
 598    }
 599
 600    return st;
 601 }
 602
 603
 604 /**
 605  * Callback to release the sampler view attached to a texture object.
 606  * Called by _mesa_HashWalk().
 607  */
 608 static void
 609 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 610 {
 611    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 612    struct st_context *st = (struct st_context *) userData;
 613
 614    st_texture_release_sampler_view(st, st_texture_object(texObj));
 615 }
 616
 617
 618 void
 619 st_destroy_context(struct st_context *st)
 620 {
 621    struct gl_context *ctx = st->ctx;
 622    struct st_framebuffer *stfb, *next;
 623
 624    GET_CURRENT_CONTEXT(curctx);
 625
 626    if (curctx == NULL) {
 627       /* No current context, but we need one to release
 628        * renderbuffer surface when we release framebuffer.
 629        * So temporarily bind the context.
 630        */
 631       _mesa_make_current(ctx, NULL, NULL);
 632    }
 633
 634    /* This must be called first so that glthread has a chance to finish */
 635    _mesa_glthread_destroy(ctx);
 636
 637    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 638
 639    st_reference_fragprog(st, &st->fp, NULL);
 640    st_reference_prog(st, &st->gp, NULL);
 641    st_reference_vertprog(st, &st->vp, NULL);
 642    st_reference_prog(st, &st->tcp, NULL);
 643    st_reference_prog(st, &st->tep, NULL);
 644    st_reference_compprog(st, &st->cp, NULL);
 645
 646    /* release framebuffer in the winsys buffers list */
 647    LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
 648       st_framebuffer_reference(&stfb, NULL);
 649    }
 650
 651    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
 652    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
 653
 654    _vbo_DestroyContext(ctx);
 655
 656    st_destroy_program_variants(st);
 657
 658    _mesa_free_context_data(ctx);
 659
 660    /* This will free the st_context too, so 'st' must not be accessed
 661     * afterwards. */
 662    st_destroy_context_priv(st, true);
 663    st = NULL;
 664
 665    free(ctx);
 666 }
 667
 668
 669 static void
 670 st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
 671 {
 672    struct st_context *st = ctx->st;
 673    st->pipe->emit_string_marker(st->pipe, string, len);
 674 }
 675
 676
 677 static void
 678 st_set_background_context(struct gl_context *ctx,
 679                           struct util_queue_monitoring *queue_info)
 680 {
 681    struct st_context *st = ctx->st;
 682    struct st_manager *smapi =
 683       (struct st_manager *) st->iface.st_context_private;
 684
 685    assert(smapi->set_background_context);
 686    smapi->set_background_context(&st->iface, queue_info);
 687 }
 688
 689
 690 static void
 691 st_get_device_uuid(struct gl_context *ctx, char *uuid)
 692 {
 693    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 694
 695    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 696    memset(uuid, 0, GL_UUID_SIZE_EXT);
 697    screen->get_device_uuid(screen, uuid);
 698 }
 699
 700
 701 static void
 702 st_get_driver_uuid(struct gl_context *ctx, char *uuid)
 703 {
 704    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 705
 706    assert(GL_UUID_SIZE_EXT >= PIPE_UUID_SIZE);
 707    memset(uuid, 0, GL_UUID_SIZE_EXT);
 708    screen->get_driver_uuid(screen, uuid);
 709 }
 710
 711
 712 void
 713 st_init_driver_functions(struct pipe_screen *screen,
 714                          struct dd_function_table *functions)
 715 {
 716    _mesa_init_sampler_object_functions(functions);
 717
 718    st_init_draw_functions(functions);
 719    st_init_blit_functions(functions);
 720    st_init_bufferobject_functions(screen, functions);
 721    st_init_clear_functions(functions);
 722    st_init_bitmap_functions(functions);
 723    st_init_copy_image_functions(functions);
 724    st_init_drawpixels_functions(functions);
 725    st_init_rasterpos_functions(functions);
 726
 727    st_init_drawtex_functions(functions);
 728
 729    st_init_eglimage_functions(functions);
 730
 731    st_init_fbo_functions(functions);
 732    st_init_feedback_functions(functions);
 733    st_init_memoryobject_functions(functions);
 734    st_init_msaa_functions(functions);
 735    st_init_perfmon_functions(functions);
 736    st_init_program_functions(functions);
 737    st_init_query_functions(functions);
 738    st_init_cond_render_functions(functions);
 739    st_init_readpixels_functions(functions);
 740    st_init_semaphoreobject_functions(functions);
 741    st_init_texture_functions(functions);
 742    st_init_texture_barrier_functions(functions);
 743    st_init_flush_functions(screen, functions);
 744    st_init_string_functions(functions);
 745    st_init_viewport_functions(functions);
 746    st_init_compute_functions(functions);
 747
 748    st_init_xformfb_functions(functions);
 749    st_init_syncobj_functions(functions);
 750
 751    st_init_vdpau_functions(functions);
 752
 753    if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
 754       functions->EmitStringMarker = st_emit_string_marker;
 755
 756    functions->Enable = st_Enable;
 757    functions->UpdateState = st_invalidate_state;
 758    functions->QueryMemoryInfo = st_query_memory_info;
 759    functions->SetBackgroundContext = st_set_background_context;
 760    functions->GetDriverUuid = st_get_driver_uuid;
 761    functions->GetDeviceUuid = st_get_device_uuid;
 762
 763    /* GL_ARB_get_program_binary */
 764    functions->GetProgramBinaryDriverSHA1 = st_get_program_binary_driver_sha1;
 765
 766    enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
 767       screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
 768                                PIPE_SHADER_CAP_PREFERRED_IR);
 769    if (preferred_ir == PIPE_SHADER_IR_NIR) {
 770       functions->ProgramBinarySerializeDriverBlob = st_serialise_nir_program;
 771       functions->ProgramBinaryDeserializeDriverBlob =
 772          st_deserialise_nir_program;
 773    } else {
 774       functions->ProgramBinarySerializeDriverBlob = st_serialise_tgsi_program;
 775       functions->ProgramBinaryDeserializeDriverBlob =
 776          st_deserialise_tgsi_program;
 777    }
 778 }