src/mesa/drivers/dri/intel/intel_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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
  29 #include "glheader.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "simple_list.h"
  33 #include "extensions.h"
  34 #include "framebuffer.h"
  35 #include "imports.h"
  36 #include "points.h"
  37
  38 #include "swrast/swrast.h"
  39 #include "swrast_setup/swrast_setup.h"
  40 #include "tnl/tnl.h"
  41
  42 #include "tnl/t_pipeline.h"
  43 #include "tnl/t_vertex.h"
  44
  45 #include "drivers/common/driverfuncs.h"
  46
  47 #include "intel_screen.h"
  48
  49 #include "i830_dri.h"
  50
  51 #include "intel_chipset.h"
  52 #include "intel_buffers.h"
  53 #include "intel_tex.h"
  54 #include "intel_ioctl.h"
  55 #include "intel_batchbuffer.h"
  56 #include "intel_blit.h"
  57 #include "intel_pixel.h"
  58 #include "intel_regions.h"
  59 #include "intel_buffer_objects.h"
  60 #include "intel_fbo.h"
  61 #include "intel_decode.h"
  62 #include "intel_bufmgr_fake.h"
  63 #include "intel_bufmgr_gem.h"
  64
  65 #include "drirenderbuffer.h"
  66 #include "vblank.h"
  67 #include "utils.h"
  68 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  69 #ifndef INTEL_DEBUG
  70 int INTEL_DEBUG = (0);
  71 #endif
  72
  73 #define need_GL_NV_point_sprite
  74 #define need_GL_ARB_multisample
  75 #define need_GL_ARB_point_parameters
  76 #define need_GL_ARB_texture_compression
  77 #define need_GL_ARB_vertex_buffer_object
  78 #define need_GL_ARB_vertex_program
  79 #define need_GL_ARB_window_pos
  80 #define need_GL_ARB_occlusion_query
  81 #define need_GL_EXT_blend_color
  82 #define need_GL_EXT_blend_equation_separate
  83 #define need_GL_EXT_blend_func_separate
  84 #define need_GL_EXT_blend_minmax
  85 #define need_GL_EXT_cull_vertex
  86 #define need_GL_EXT_fog_coord
  87 #define need_GL_EXT_framebuffer_object
  88 #define need_GL_EXT_multi_draw_arrays
  89 #define need_GL_EXT_secondary_color
  90 #define need_GL_NV_vertex_program
  91 #define need_GL_ATI_separate_stencil
  92 #define need_GL_EXT_point_parameters
  93 #define need_GL_VERSION_2_0
  94 #define need_GL_VERSION_2_1
  95 #define need_GL_ARB_shader_objects
  96 #define need_GL_ARB_vertex_shader
  97
  98 #include "extension_helper.h"
  99
 100 #define DRIVER_DATE                     "20061102"
 101
 102 static const GLubyte *
 103 intelGetString(GLcontext * ctx, GLenum name)
 104 {
 105    const char *chipset;
 106    static char buffer[128];
 107
 108    switch (name) {
 109    case GL_VENDOR:
 110       return (GLubyte *) "Tungsten Graphics, Inc";
 111       break;
 112
 113    case GL_RENDERER:
 114       switch (intel_context(ctx)->intelScreen->deviceID) {
 115       case PCI_CHIP_845_G:
 116          chipset = "Intel(R) 845G";
 117          break;
 118       case PCI_CHIP_I830_M:
 119          chipset = "Intel(R) 830M";
 120          break;
 121       case PCI_CHIP_I855_GM:
 122          chipset = "Intel(R) 852GM/855GM";
 123          break;
 124       case PCI_CHIP_I865_G:
 125          chipset = "Intel(R) 865G";
 126          break;
 127       case PCI_CHIP_I915_G:
 128          chipset = "Intel(R) 915G";
 129          break;
 130       case PCI_CHIP_E7221_G:
 131          chipset = "Intel (R) E7221G (i915)";
 132          break;
 133       case PCI_CHIP_I915_GM:
 134          chipset = "Intel(R) 915GM";
 135          break;
 136       case PCI_CHIP_I945_G:
 137          chipset = "Intel(R) 945G";
 138          break;
 139       case PCI_CHIP_I945_GM:
 140          chipset = "Intel(R) 945GM";
 141          break;
 142       case PCI_CHIP_I945_GME:
 143          chipset = "Intel(R) 945GME";
 144          break;
 145       case PCI_CHIP_G33_G:
 146          chipset = "Intel(R) G33";
 147          break;
 148       case PCI_CHIP_Q35_G:
 149          chipset = "Intel(R) Q35";
 150          break;
 151       case PCI_CHIP_Q33_G:
 152          chipset = "Intel(R) Q33";
 153          break;
 154       case PCI_CHIP_I965_Q:
 155          chipset = "Intel(R) 965Q";
 156          break;
 157       case PCI_CHIP_I965_G:
 158       case PCI_CHIP_I965_G_1:
 159          chipset = "Intel(R) 965G";
 160          break;
 161       case PCI_CHIP_I946_GZ:
 162          chipset = "Intel(R) 946GZ";
 163          break;
 164       case PCI_CHIP_I965_GM:
 165          chipset = "Intel(R) 965GM";
 166          break;
 167       case PCI_CHIP_I965_GME:
 168          chipset = "Intel(R) 965GME/GLE";
 169          break;
 170       case PCI_CHIP_IGD_GM:
 171          chipset = "Intel(R) Integrated Graphics Device";
 172          break;
 173       default:
 174          chipset = "Unknown Intel Chipset";
 175          break;
 176       }
 177
 178       (void) driGetRendererString(buffer, chipset, DRIVER_DATE, 0);
 179       return (GLubyte *) buffer;
 180
 181    default:
 182       return NULL;
 183    }
 184 }
 185
 186 /**
 187  * Extension strings exported by the intel driver.
 188  *
 189  * \note
 190  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 191  * old i830-specific driver.
 192  */
 193 static const struct dri_extension card_extensions[] = {
 194    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 195    {"GL_ARB_multitexture", NULL},
 196    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 197    {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
 198    {"GL_ARB_texture_border_clamp", NULL},
 199    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 200    {"GL_ARB_texture_cube_map", NULL},
 201    {"GL_ARB_texture_env_add", NULL},
 202    {"GL_ARB_texture_env_combine", NULL},
 203    {"GL_ARB_texture_env_dot3", NULL},
 204    {"GL_ARB_texture_mirrored_repeat", NULL},
 205    {"GL_ARB_texture_non_power_of_two",   NULL },
 206    {"GL_ARB_texture_rectangle", NULL},
 207    {"GL_NV_texture_rectangle", NULL},
 208    {"GL_EXT_texture_rectangle", NULL},
 209    {"GL_ARB_point_parameters", NULL},
 210    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 211    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 212    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 213    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 214    {"GL_EXT_blend_equation_separate",
 215     GL_EXT_blend_equation_separate_functions},
 216    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 217    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 218    {"GL_EXT_blend_logic_op", NULL},
 219    {"GL_EXT_blend_subtract", NULL},
 220    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 221    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 222    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 223    {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
 224 #if 1                           /* XXX FBO temporary? */
 225    {"GL_EXT_packed_depth_stencil", NULL},
 226 #endif
 227    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 228    {"GL_EXT_stencil_wrap", NULL},
 229    {"GL_EXT_texture_edge_clamp", NULL},
 230    {"GL_EXT_texture_env_combine", NULL},
 231    {"GL_EXT_texture_env_dot3", NULL},
 232    {"GL_EXT_texture_filter_anisotropic", NULL},
 233    {"GL_EXT_texture_lod_bias", NULL},
 234    {"GL_3DFX_texture_compression_FXT1", NULL},
 235    {"GL_APPLE_client_storage", NULL},
 236    {"GL_MESA_pack_invert", NULL},
 237    {"GL_MESA_ycbcr_texture", NULL},
 238    {"GL_NV_blend_square", NULL},
 239    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 240    {"GL_NV_vertex_program1_1", NULL},
 241    { "GL_SGIS_generate_mipmap", NULL },
 242    {NULL, NULL}
 243 };
 244
 245 static const struct dri_extension brw_extensions[] = {
 246    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
 247    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
 248    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
 249    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
 250    { "GL_ARB_point_sprite",               NULL},
 251    { "GL_ARB_fragment_shader",            NULL },
 252    { "GL_ARB_draw_buffers",               NULL },
 253    { "GL_ARB_depth_texture",              NULL },
 254    { "GL_ARB_fragment_program",           NULL },
 255    { "GL_ARB_shadow",                     NULL },
 256    { "GL_EXT_shadow_funcs",               NULL },
 257    /* ARB extn won't work if not enabled */
 258    { "GL_SGIX_depth_texture",             NULL },
 259    { "GL_ARB_texture_env_crossbar",       NULL },
 260    { "GL_EXT_texture_sRGB",               NULL},
 261    { NULL,                                NULL }
 262 };
 263
 264 static const struct dri_extension arb_oc_extensions[] = {
 265    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 266    {NULL, NULL}
 267 };
 268
 269 static const struct dri_extension ttm_extensions[] = {
 270    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 271    {"GL_ARB_pixel_buffer_object", NULL},
 272    {NULL, NULL}
 273 };
 274
 275 /**
 276  * Initializes potential list of extensions if ctx == NULL, or actually enables
 277  * extensions for a context.
 278  */
 279 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 280 {
 281    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 282
 283    /* Disable imaging extension until convolution is working in teximage paths.
 284     */
 285    enable_imaging = GL_FALSE;
 286
 287    driInitExtensions(ctx, card_extensions, enable_imaging);
 288
 289    if (intel == NULL || intel->ttm)
 290       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 291
 292    if (intel == NULL ||
 293        (IS_965(intel->intelScreen->deviceID) &&
 294         intel->intelScreen->drmMinor >= 8))
 295       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 296
 297    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 298       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 299 }
 300
 301 static const struct dri_debug_control debug_control[] = {
 302    { "tex",   DEBUG_TEXTURE},
 303    { "state", DEBUG_STATE},
 304    { "ioctl", DEBUG_IOCTL},
 305    { "blit",  DEBUG_BLIT},
 306    { "mip",   DEBUG_MIPTREE},
 307    { "fall",  DEBUG_FALLBACKS},
 308    { "verb",  DEBUG_VERBOSE},
 309    { "bat",   DEBUG_BATCH},
 310    { "pix",   DEBUG_PIXEL},
 311    { "buf",   DEBUG_BUFMGR},
 312    { "reg",   DEBUG_REGION},
 313    { "fbo",   DEBUG_FBO},
 314    { "lock",  DEBUG_LOCK},
 315    { "sync",  DEBUG_SYNC},
 316    { "prim",  DEBUG_PRIMS },
 317    { "vert",  DEBUG_VERTS },
 318    { "dri",   DEBUG_DRI },
 319    { "dma",   DEBUG_DMA },
 320    { "san",   DEBUG_SANITY },
 321    { "sleep", DEBUG_SLEEP },
 322    { "stats", DEBUG_STATS },
 323    { "tile",  DEBUG_TILE },
 324    { "sing",  DEBUG_SINGLE_THREAD },
 325    { "thre",  DEBUG_SINGLE_THREAD },
 326    { "wm",    DEBUG_WM },
 327    { "urb",   DEBUG_URB },
 328    { "vs",    DEBUG_VS },
 329    { NULL,    0 }
 330 };
 331
 332
 333 static void
 334 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 335 {
 336     struct intel_context *intel = intel_context(ctx);
 337
 338    _swrast_InvalidateState(ctx, new_state);
 339    _swsetup_InvalidateState(ctx, new_state);
 340    _vbo_InvalidateState(ctx, new_state);
 341    _tnl_InvalidateState(ctx, new_state);
 342    _tnl_invalidate_vertex_state(ctx, new_state);
 343
 344    intel->NewGLState |= new_state;
 345
 346    if (intel->vtbl.invalidate_state)
 347       intel->vtbl.invalidate_state( intel, new_state );
 348 }
 349
 350
 351 void
 352 intelFlush(GLcontext * ctx)
 353 {
 354    struct intel_context *intel = intel_context(ctx);
 355
 356    if (intel->Fallback)
 357       _swrast_flush(ctx);
 358
 359    if (!IS_965(intel->intelScreen->deviceID))
 360       INTEL_FIREVERTICES(intel);
 361
 362    if (intel->batch->map != intel->batch->ptr)
 363       intel_batchbuffer_flush(intel->batch);
 364 }
 365
 366 void
 367 intelFinish(GLcontext * ctx)
 368 {
 369    struct gl_framebuffer *fb = ctx->DrawBuffer;
 370    int i;
 371
 372    intelFlush(ctx);
 373
 374    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 375        struct intel_renderbuffer *irb;
 376
 377        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 378
 379        if (irb->region)
 380           dri_bo_wait_rendering(irb->region->buffer);
 381    }
 382    if (fb->_DepthBuffer) {
 383       /* XXX: Wait on buffer idle */
 384    }
 385 }
 386
 387 static void
 388 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 389 {
 390         struct intel_context *intel = intel_context( ctx );
 391         struct drm_i915_mmio io = {
 392                 .read_write = I915_MMIO_READ,
 393                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 394                 .data = &q->Result
 395         };
 396         intel->stats_wm++;
 397         intelFinish(&intel->ctx);
 398         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 399 }
 400
 401 static void
 402 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 403 {
 404         struct intel_context *intel = intel_context( ctx );
 405         GLuint64EXT tmp;
 406         struct drm_i915_mmio io = {
 407                 .read_write = I915_MMIO_READ,
 408                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 409                 .data = &tmp
 410         };
 411         intelFinish(&intel->ctx);
 412         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 413         q->Result = tmp - q->Result;
 414         q->Ready = GL_TRUE;
 415         intel->stats_wm--;
 416 }
 417
 418 /** Driver-specific fence emit implementation for the fake memory manager. */
 419 static unsigned int
 420 intel_fence_emit(void *private)
 421 {
 422    struct intel_context *intel = (struct intel_context *)private;
 423    unsigned int fence;
 424
 425    /* XXX: Need to emit a flush, if we haven't already (at least with the
 426     * current batchbuffer implementation, we have).
 427     */
 428
 429    fence = intelEmitIrqLocked(intel);
 430
 431    return fence;
 432 }
 433
 434 /** Driver-specific fence wait implementation for the fake memory manager. */
 435 static int
 436 intel_fence_wait(void *private, unsigned int cookie)
 437 {
 438    struct intel_context *intel = (struct intel_context *)private;
 439
 440    intelWaitIrq(intel, cookie);
 441
 442    return 0;
 443 }
 444
 445 static GLboolean
 446 intel_init_bufmgr(struct intel_context *intel)
 447 {
 448    intelScreenPrivate *intelScreen = intel->intelScreen;
 449    GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
 450    GLboolean gem_supported;
 451
 452    /* If we've got a new enough DDX that's initializing GEM and giving us
 453     * object handles for the shared buffers, use that.
 454     */
 455    intel->ttm = GL_FALSE;
 456    if (intel->intelScreen->driScrnPriv->dri2.enabled)
 457        gem_supported = GL_TRUE;
 458    else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 459             intel->intelScreen->drmMinor >= 11 &&
 460             intel->intelScreen->front.bo_handle != -1)
 461        gem_supported = GL_TRUE;
 462    else
 463        gem_supported = GL_FALSE;
 464
 465    if (!gem_disable && gem_supported) {
 466       int bo_reuse_mode;
 467       intel->bufmgr = intel_bufmgr_gem_init(intel->driFd,
 468                                             BATCH_SZ);
 469       if (intel->bufmgr != NULL)
 470          intel->ttm = GL_TRUE;
 471
 472       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 473       switch (bo_reuse_mode) {
 474       case DRI_CONF_BO_REUSE_DISABLED:
 475          break;
 476       case DRI_CONF_BO_REUSE_ALL:
 477          intel_gem_enable_bo_reuse(intel->bufmgr);
 478          break;
 479       }
 480    }
 481    /* Otherwise, use the classic buffer manager. */
 482    if (intel->bufmgr == NULL) {
 483       if (gem_disable) {
 484          fprintf(stderr, "GEM disabled.  Using classic.\n");
 485       } else {
 486          fprintf(stderr, "Failed to initialize GEM.  "
 487                  "Falling back to classic.\n");
 488       }
 489
 490       if (intelScreen->tex.size == 0) {
 491          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 492                  __func__, __LINE__);
 493          return GL_FALSE;
 494       }
 495
 496       intel->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 497                                            intelScreen->tex.map,
 498                                            intelScreen->tex.size,
 499                                            intel_fence_emit,
 500                                            intel_fence_wait,
 501                                            intel);
 502    }
 503
 504    /* XXX bufmgr should be per-screen, not per-context */
 505    intelScreen->ttm = intel->ttm;
 506
 507    return GL_TRUE;
 508 }
 509
 510 void
 511 intelInitDriverFunctions(struct dd_function_table *functions)
 512 {
 513    _mesa_init_driver_functions(functions);
 514
 515    functions->Flush = intelFlush;
 516    functions->Finish = intelFinish;
 517    functions->GetString = intelGetString;
 518    functions->UpdateState = intelInvalidateState;
 519
 520    functions->CopyColorTable = _swrast_CopyColorTable;
 521    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 522    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 523    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 524
 525    functions->BeginQuery = intelBeginQuery;
 526    functions->EndQuery = intelEndQuery;
 527
 528    intelInitTextureFuncs(functions);
 529    intelInitStateFuncs(functions);
 530    intelInitBufferFuncs(functions);
 531 }
 532
 533
 534 GLboolean
 535 intelInitContext(struct intel_context *intel,
 536                  const __GLcontextModes * mesaVis,
 537                  __DRIcontextPrivate * driContextPriv,
 538                  void *sharedContextPrivate,
 539                  struct dd_function_table *functions)
 540 {
 541    GLcontext *ctx = &intel->ctx;
 542    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 543    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 544    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 545    volatile struct drm_i915_sarea *saPriv = (struct drm_i915_sarea *)
 546       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 547    int fthrottle_mode;
 548
 549    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 550                                  functions, (void *) intel)) {
 551       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 552       return GL_FALSE;
 553    }
 554
 555    driContextPriv->driverPrivate = intel;
 556    intel->intelScreen = intelScreen;
 557    intel->driScreen = sPriv;
 558    intel->sarea = saPriv;
 559
 560    /* Dri stuff */
 561    intel->hHWContext = driContextPriv->hHWContext;
 562    intel->driFd = sPriv->fd;
 563    intel->driHwLock = sPriv->lock;
 564
 565    intel->width = intelScreen->width;
 566    intel->height = intelScreen->height;
 567
 568    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 569                        intel->driScreen->myNum,
 570                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 571    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 572       intel->maxBatchSize = 4096;
 573    else
 574       intel->maxBatchSize = BATCH_SZ;
 575
 576    if (!intel_init_bufmgr(intel))
 577       return GL_FALSE;
 578
 579    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 580
 581    /* This doesn't yet catch all non-conformant rendering, but it's a
 582     * start.
 583     */
 584    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 585       intel->strict_conformance = 1;
 586    }
 587
 588    if (intel->strict_conformance) {
 589       ctx->Const.MinLineWidth = 1.0;
 590       ctx->Const.MinLineWidthAA = 1.0;
 591       ctx->Const.MaxLineWidth = 1.0;
 592       ctx->Const.MaxLineWidthAA = 1.0;
 593       ctx->Const.LineWidthGranularity = 1.0;
 594    }
 595    else {
 596       ctx->Const.MinLineWidth = 1.0;
 597       ctx->Const.MinLineWidthAA = 1.0;
 598       ctx->Const.MaxLineWidth = 5.0;
 599       ctx->Const.MaxLineWidthAA = 5.0;
 600       ctx->Const.LineWidthGranularity = 0.5;
 601    }
 602
 603    ctx->Const.MinPointSize = 1.0;
 604    ctx->Const.MinPointSizeAA = 1.0;
 605    ctx->Const.MaxPointSize = 255.0;
 606    ctx->Const.MaxPointSizeAA = 3.0;
 607    ctx->Const.PointSizeGranularity = 1.0;
 608
 609    /* reinitialize the context point state.
 610     * It depend on constants in __GLcontextRec::Const
 611     */
 612    _mesa_init_point(ctx);
 613
 614    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 615
 616    /* Initialize the software rasterizer and helper modules. */
 617    _swrast_CreateContext(ctx);
 618    _vbo_CreateContext(ctx);
 619    _tnl_CreateContext(ctx);
 620    _swsetup_CreateContext(ctx);
 621
 622    /* Configure swrast to match hardware characteristics: */
 623    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 624    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 625
 626    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 627    intel->hw_stipple = 1;
 628
 629    /* XXX FBO: this doesn't seem to be used anywhere */
 630    switch (mesaVis->depthBits) {
 631    case 0:                     /* what to do in this case? */
 632    case 16:
 633       intel->polygon_offset_scale = 1.0;
 634       break;
 635    case 24:
 636       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 637       break;
 638    default:
 639       assert(0);
 640       break;
 641    }
 642
 643    if (IS_965(intelScreen->deviceID))
 644       intel->polygon_offset_scale /= 0xffff;
 645
 646    intel->RenderIndex = ~0;
 647
 648    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 649    intel->irqsEmitted = 0;
 650
 651    intel->do_irqs = (intel->intelScreen->irq_active &&
 652                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 653
 654    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 655
 656    _math_matrix_ctr(&intel->ViewportMatrix);
 657
 658    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 659       _mesa_printf("IRQs not active.  Exiting\n");
 660       exit(1);
 661    }
 662
 663    intelInitExtensions(ctx, GL_FALSE);
 664
 665    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 666    if (INTEL_DEBUG & DEBUG_BUFMGR)
 667       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 668
 669    if (!sPriv->dri2.enabled)
 670       intel_recreate_static_regions(intel);
 671
 672    intel->batch = intel_batchbuffer_alloc(intel);
 673
 674    intel_bufferobj_init(intel);
 675    intel_fbo_init(intel);
 676
 677    if (intel->ctx.Mesa_DXTn) {
 678       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 679       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 680    }
 681    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 682       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 683    }
 684
 685    intel->prim.primitive = ~0;
 686
 687    /* Force all software fallbacks */
 688    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 689       fprintf(stderr, "disabling 3D rasterization\n");
 690       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 691       intel->no_rast = 1;
 692    }
 693
 694    /* Disable all hardware rendering (skip emitting batches and fences/waits
 695     * to the kernel)
 696     */
 697    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 698
 699    return GL_TRUE;
 700 }
 701
 702 void
 703 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 704 {
 705    struct intel_context *intel =
 706       (struct intel_context *) driContextPriv->driverPrivate;
 707
 708    assert(intel);               /* should never be null */
 709    if (intel) {
 710       GLboolean release_texture_heaps;
 711
 712       INTEL_FIREVERTICES(intel);
 713
 714       intel->vtbl.destroy(intel);
 715
 716       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 717       _swsetup_DestroyContext(&intel->ctx);
 718       _tnl_DestroyContext(&intel->ctx);
 719       _vbo_DestroyContext(&intel->ctx);
 720
 721       _swrast_DestroyContext(&intel->ctx);
 722       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 723
 724       intel_batchbuffer_free(intel->batch);
 725
 726       if (release_texture_heaps) {
 727          /* This share group is about to go away, free our private
 728           * texture object data.
 729           */
 730          if (INTEL_DEBUG & DEBUG_TEXTURE)
 731             fprintf(stderr, "do something to free texture heaps\n");
 732       }
 733
 734       /* free the Mesa context */
 735       _mesa_free_context_data(&intel->ctx);
 736
 737       dri_bufmgr_destroy(intel->bufmgr);
 738    }
 739 }
 740
 741 GLboolean
 742 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 743 {
 744    return GL_TRUE;
 745 }
 746
 747 GLboolean
 748 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 749                  __DRIdrawablePrivate * driDrawPriv,
 750                  __DRIdrawablePrivate * driReadPriv)
 751 {
 752    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 753
 754    if (driContextPriv) {
 755       struct intel_context *intel =
 756          (struct intel_context *) driContextPriv->driverPrivate;
 757       struct intel_framebuffer *intel_fb =
 758          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 759       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 760
 761
 762       /* XXX FBO temporary fix-ups! */
 763       /* if the renderbuffers don't have regions, init them from the context */
 764       if (!driContextPriv->driScreenPriv->dri2.enabled) {
 765          struct intel_renderbuffer *irbDepth
 766             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 767          struct intel_renderbuffer *irbStencil
 768             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 769
 770          if (intel_fb->color_rb[0]) {
 771             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 772                                           intel->front_region);
 773          }
 774          if (intel_fb->color_rb[1]) {
 775             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 776                                           intel->back_region);
 777          }
 778 #if 0
 779          if (intel_fb->color_rb[2]) {
 780             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 781                                           intel->third_region);
 782          }
 783 #endif
 784          if (irbDepth) {
 785             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 786          }
 787          if (irbStencil) {
 788             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 789          }
 790       }
 791
 792       /* set GLframebuffer size to match window, if needed */
 793       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 794
 795       if (driReadPriv != driDrawPriv) {
 796          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 797       }
 798
 799       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 800
 801       /* The drawbuffer won't always be updated by _mesa_make_current:
 802        */
 803       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 804
 805          if (intel->driReadDrawable != driReadPriv)
 806             intel->driReadDrawable = driReadPriv;
 807
 808          if (intel->driDrawable != driDrawPriv) {
 809             if (driDrawPriv->swap_interval == (unsigned)-1) {
 810                int i;
 811
 812                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 813                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 814                  : VBLANK_FLAG_NO_IRQ;
 815
 816                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 817                driDrawableInitVBlank(driDrawPriv);
 818                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 819
 820                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 821                   if (intel_fb->color_rb[i])
 822                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 823                }
 824             }
 825             intel->driDrawable = driDrawPriv;
 826             intelWindowMoved(intel);
 827          }
 828
 829          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 830       }
 831    }
 832    else {
 833       _mesa_make_current(NULL, NULL, NULL);
 834    }
 835
 836    return GL_TRUE;
 837 }
 838
 839 static void
 840 intelContendedLock(struct intel_context *intel, GLuint flags)
 841 {
 842    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 843    __DRIscreenPrivate *sPriv = intel->driScreen;
 844    volatile struct drm_i915_sarea *sarea = intel->sarea;
 845    int me = intel->hHWContext;
 846
 847    drmGetLock(intel->driFd, intel->hHWContext, flags);
 848    intel->locked = 1;
 849
 850    if (INTEL_DEBUG & DEBUG_LOCK)
 851       _mesa_printf("%s - got contended lock\n", __progname);
 852
 853    /* If the window moved, may need to set a new cliprect now.
 854     *
 855     * NOTE: This releases and regains the hw lock, so all state
 856     * checking must be done *after* this call:
 857     */
 858    if (dPriv)
 859        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 860
 861    if (sarea && sarea->ctxOwner != me) {
 862       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 863          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 864                  sarea->ctxOwner, me);
 865       }
 866       sarea->ctxOwner = me;
 867    }
 868
 869    /* If the last consumer of the texture memory wasn't us, notify the fake
 870     * bufmgr and record the new owner.  We should have the memory shared
 871     * between contexts of a single fake bufmgr, but this will at least make
 872     * things correct for now.
 873     */
 874    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 875       sarea->texAge = intel->hHWContext;
 876       dri_bufmgr_fake_contended_lock_take(intel->bufmgr);
 877       if (INTEL_DEBUG & DEBUG_BATCH)
 878          intel_decode_context_reset();
 879       if (INTEL_DEBUG & DEBUG_BUFMGR)
 880          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 881                  sarea->ctxOwner, intel->hHWContext);
 882    }
 883
 884    if (sarea->width != intel->width || sarea->height != intel->height) {
 885        int numClipRects = intel->numClipRects;
 886
 887        /*
 888         * FIXME: Really only need to do this when drawing to a
 889         * common back- or front buffer.
 890         */
 891
 892        /*
 893         * This will essentially drop the outstanding batchbuffer on
 894         * the floor.
 895         */
 896        intel->numClipRects = 0;
 897
 898        if (intel->Fallback)
 899            _swrast_flush(&intel->ctx);
 900
 901        if (!IS_965(intel->intelScreen->deviceID))
 902            INTEL_FIREVERTICES(intel);
 903
 904        if (intel->batch->map != intel->batch->ptr)
 905            intel_batchbuffer_flush(intel->batch);
 906
 907        intel->numClipRects = numClipRects;
 908
 909        /* force window update */
 910        intel->lastStamp = 0;
 911
 912        intel->width = sarea->width;
 913        intel->height = sarea->height;
 914    }
 915
 916    /* Drawable changed?
 917     */
 918    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 919        intelWindowMoved(intel);
 920        intel->lastStamp = dPriv->lastStamp;
 921    }
 922 }
 923
 924
 925 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 926
 927 /* Lock the hardware and validate our state.
 928  */
 929 void LOCK_HARDWARE( struct intel_context *intel )
 930 {
 931     __DRIdrawable *dPriv = intel->driDrawable;
 932     __DRIscreen *sPriv = intel->driScreen;
 933     char __ret = 0;
 934     struct intel_framebuffer *intel_fb = NULL;
 935     struct intel_renderbuffer *intel_rb = NULL;
 936
 937     _glthread_LOCK_MUTEX(lockMutex);
 938     assert(!intel->locked);
 939     intel->locked = 1;
 940
 941     if (intel->driDrawable) {
 942        intel_fb = intel->driDrawable->driverPrivate;
 943
 944        if (intel_fb)
 945           intel_rb =
 946              intel_get_renderbuffer(&intel_fb->Base,
 947                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 948     }
 949
 950     if (intel_rb && dPriv->vblFlags &&
 951         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 952         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 953         drmVBlank vbl;
 954
 955         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 956
 957         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 958             vbl.request.type |= DRM_VBLANK_SECONDARY;
 959         }
 960
 961         vbl.request.sequence = intel_rb->vbl_pending;
 962         drmWaitVBlank(intel->driFd, &vbl);
 963         intel_fb->vbl_waited = vbl.reply.sequence;
 964     }
 965
 966     DRM_CAS(intel->driHwLock, intel->hHWContext,
 967         (DRM_LOCK_HELD|intel->hHWContext), __ret);
 968
 969     if (sPriv->dri2.enabled) {
 970         if (__ret)
 971             drmGetLock(intel->driFd, intel->hHWContext, 0);
 972         if (__driParseEvents(dPriv->driContextPriv, dPriv)) {
 973             intelWindowMoved(intel);
 974             intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 975         }
 976     } else if (__ret) {
 977         intelContendedLock( intel, 0 );
 978     }
 979
 980
 981     if (INTEL_DEBUG & DEBUG_LOCK)
 982       _mesa_printf("%s - locked\n", __progname);
 983 }
 984
 985
 986 /* Unlock the hardware using the global current context
 987  */
 988 void UNLOCK_HARDWARE( struct intel_context *intel )
 989 {
 990    intel->vtbl.note_unlock( intel );
 991    intel->locked = 0;
 992
 993    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 994
 995    _glthread_UNLOCK_MUTEX(lockMutex);
 996
 997    if (INTEL_DEBUG & DEBUG_LOCK)
 998       _mesa_printf("%s - unlocked\n", __progname);
 999
1000    /**
1001     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1002     * cliprects.
1003     */
1004    assert(intel->batch->cliprect_mode != REFERENCES_CLIPRECTS);
1005 }
1006