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.h"
  63
  64 #include "drirenderbuffer.h"
  65 #include "vblank.h"
  66 #include "utils.h"
  67 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  68 #ifndef INTEL_DEBUG
  69 int INTEL_DEBUG = (0);
  70 #endif
  71
  72 #define need_GL_NV_point_sprite
  73 #define need_GL_ARB_multisample
  74 #define need_GL_ARB_point_parameters
  75 #define need_GL_ARB_texture_compression
  76 #define need_GL_ARB_vertex_buffer_object
  77 #define need_GL_ARB_vertex_program
  78 #define need_GL_ARB_window_pos
  79 #define need_GL_ARB_occlusion_query
  80 #define need_GL_EXT_blend_color
  81 #define need_GL_EXT_blend_equation_separate
  82 #define need_GL_EXT_blend_func_separate
  83 #define need_GL_EXT_blend_minmax
  84 #define need_GL_EXT_cull_vertex
  85 #define need_GL_EXT_fog_coord
  86 #define need_GL_EXT_framebuffer_object
  87 #define need_GL_EXT_multi_draw_arrays
  88 #define need_GL_EXT_secondary_color
  89 #define need_GL_NV_vertex_program
  90 #define need_GL_ATI_separate_stencil
  91 #define need_GL_EXT_point_parameters
  92 #define need_GL_VERSION_2_0
  93 #define need_GL_VERSION_2_1
  94 #define need_GL_ARB_shader_objects
  95 #define need_GL_ARB_vertex_shader
  96
  97 #include "extension_helper.h"
  98
  99 #define DRIVER_DATE                     "20080716"
 100 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
 101
 102 static const GLubyte *
 103 intelGetString(GLcontext * ctx, GLenum name)
 104 {
 105    const struct intel_context *const intel = intel_context(ctx);
 106    const char *chipset;
 107    static char buffer[128];
 108
 109    switch (name) {
 110    case GL_VENDOR:
 111       return (GLubyte *) "Tungsten Graphics, Inc";
 112       break;
 113
 114    case GL_RENDERER:
 115       switch (intel->intelScreen->deviceID) {
 116       case PCI_CHIP_845_G:
 117          chipset = "Intel(R) 845G";
 118          break;
 119       case PCI_CHIP_I830_M:
 120          chipset = "Intel(R) 830M";
 121          break;
 122       case PCI_CHIP_I855_GM:
 123          chipset = "Intel(R) 852GM/855GM";
 124          break;
 125       case PCI_CHIP_I865_G:
 126          chipset = "Intel(R) 865G";
 127          break;
 128       case PCI_CHIP_I915_G:
 129          chipset = "Intel(R) 915G";
 130          break;
 131       case PCI_CHIP_E7221_G:
 132          chipset = "Intel (R) E7221G (i915)";
 133          break;
 134       case PCI_CHIP_I915_GM:
 135          chipset = "Intel(R) 915GM";
 136          break;
 137       case PCI_CHIP_I945_G:
 138          chipset = "Intel(R) 945G";
 139          break;
 140       case PCI_CHIP_I945_GM:
 141          chipset = "Intel(R) 945GM";
 142          break;
 143       case PCI_CHIP_I945_GME:
 144          chipset = "Intel(R) 945GME";
 145          break;
 146       case PCI_CHIP_G33_G:
 147          chipset = "Intel(R) G33";
 148          break;
 149       case PCI_CHIP_Q35_G:
 150          chipset = "Intel(R) Q35";
 151          break;
 152       case PCI_CHIP_Q33_G:
 153          chipset = "Intel(R) Q33";
 154          break;
 155       case PCI_CHIP_I965_Q:
 156          chipset = "Intel(R) 965Q";
 157          break;
 158       case PCI_CHIP_I965_G:
 159       case PCI_CHIP_I965_G_1:
 160          chipset = "Intel(R) 965G";
 161          break;
 162       case PCI_CHIP_I946_GZ:
 163          chipset = "Intel(R) 946GZ";
 164          break;
 165       case PCI_CHIP_I965_GM:
 166          chipset = "Intel(R) 965GM";
 167          break;
 168       case PCI_CHIP_I965_GME:
 169          chipset = "Intel(R) 965GME/GLE";
 170          break;
 171       case PCI_CHIP_GM45_GM:
 172          chipset = "Mobile Intel® GM45 Express Chipset";
 173          break;
 174       case PCI_CHIP_IGD_E_G:
 175          chipset = "Intel(R) Integrated Graphics Device";
 176          break;
 177       case PCI_CHIP_G45_G:
 178          chipset = "Intel(R) G45/G43";
 179          break;
 180       case PCI_CHIP_Q45_G:
 181          chipset = "Intel(R) Q45/Q43";
 182          break;
 183       default:
 184          chipset = "Unknown Intel Chipset";
 185          break;
 186       }
 187
 188       (void) driGetRendererString(buffer, chipset,
 189                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 190                                   0);
 191       return (GLubyte *) buffer;
 192
 193    default:
 194       return NULL;
 195    }
 196 }
 197
 198 /**
 199  * Extension strings exported by the intel driver.
 200  *
 201  * Extensions supported by all chips supported by i830_dri, i915_dri, or
 202  * i965_dri.
 203  */
 204 static const struct dri_extension card_extensions[] = {
 205    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 206    {"GL_ARB_multitexture", NULL},
 207    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 208    {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
 209    {"GL_ARB_texture_border_clamp", NULL},
 210    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 211    {"GL_ARB_texture_cube_map", NULL},
 212    {"GL_ARB_texture_env_add", NULL},
 213    {"GL_ARB_texture_env_combine", NULL},
 214    {"GL_ARB_texture_env_crossbar", NULL},
 215    {"GL_ARB_texture_env_dot3", NULL},
 216    {"GL_ARB_texture_mirrored_repeat", NULL},
 217    {"GL_ARB_texture_non_power_of_two",   NULL },
 218    {"GL_ARB_texture_rectangle", NULL},
 219    {"GL_NV_texture_rectangle", NULL},
 220    {"GL_EXT_texture_rectangle", NULL},
 221    {"GL_ARB_point_parameters", NULL},
 222    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 223    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 224    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 225    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 226    {"GL_EXT_blend_equation_separate",
 227     GL_EXT_blend_equation_separate_functions},
 228    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 229    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 230    {"GL_EXT_blend_logic_op", NULL},
 231    {"GL_EXT_blend_subtract", NULL},
 232    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 233    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 234    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 235    {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
 236 #if 1                           /* XXX FBO temporary? */
 237    {"GL_EXT_packed_depth_stencil", NULL},
 238 #endif
 239    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 240    {"GL_EXT_stencil_wrap", NULL},
 241    {"GL_EXT_texture_edge_clamp", NULL},
 242    {"GL_EXT_texture_env_combine", NULL},
 243    {"GL_EXT_texture_env_dot3", NULL},
 244    {"GL_EXT_texture_filter_anisotropic", NULL},
 245    {"GL_EXT_texture_lod_bias", NULL},
 246    {"GL_3DFX_texture_compression_FXT1", NULL},
 247    {"GL_APPLE_client_storage", NULL},
 248    {"GL_MESA_pack_invert", NULL},
 249    {"GL_MESA_ycbcr_texture", NULL},
 250    {"GL_NV_blend_square", NULL},
 251    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 252    {"GL_NV_vertex_program1_1", NULL},
 253    { "GL_SGIS_generate_mipmap", NULL },
 254    {NULL, NULL}
 255 };
 256
 257 static const struct dri_extension brw_extensions[] = {
 258    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
 259    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
 260    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
 261    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
 262    { "GL_ARB_point_sprite",               NULL},
 263    { "GL_ARB_fragment_shader",            NULL },
 264    { "GL_ARB_draw_buffers",               NULL },
 265    { "GL_ARB_depth_texture",              NULL },
 266    { "GL_ARB_fragment_program",           NULL },
 267    { "GL_ARB_shadow",                     NULL },
 268    { "GL_EXT_shadow_funcs",               NULL },
 269    { "GL_ARB_fragment_program_shadow",    NULL },
 270    /* ARB extn won't work if not enabled */
 271    { "GL_SGIX_depth_texture",             NULL },
 272    { "GL_EXT_texture_sRGB",               NULL},
 273    { NULL,                                NULL }
 274 };
 275
 276 static const struct dri_extension arb_oc_extensions[] = {
 277    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 278    {NULL, NULL}
 279 };
 280
 281 static const struct dri_extension ttm_extensions[] = {
 282    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 283    {"GL_ARB_pixel_buffer_object", NULL},
 284    {NULL, NULL}
 285 };
 286
 287 /**
 288  * Initializes potential list of extensions if ctx == NULL, or actually enables
 289  * extensions for a context.
 290  */
 291 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 292 {
 293    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 294
 295    /* Disable imaging extension until convolution is working in teximage paths.
 296     */
 297    enable_imaging = GL_FALSE;
 298
 299    driInitExtensions(ctx, card_extensions, enable_imaging);
 300
 301    if (intel == NULL || intel->ttm)
 302       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 303
 304    if (intel == NULL ||
 305        (IS_965(intel->intelScreen->deviceID) &&
 306         intel->intelScreen->drmMinor >= 8))
 307       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 308
 309    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 310       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 311 }
 312
 313 static const struct dri_debug_control debug_control[] = {
 314    { "tex",   DEBUG_TEXTURE},
 315    { "state", DEBUG_STATE},
 316    { "ioctl", DEBUG_IOCTL},
 317    { "blit",  DEBUG_BLIT},
 318    { "mip",   DEBUG_MIPTREE},
 319    { "fall",  DEBUG_FALLBACKS},
 320    { "verb",  DEBUG_VERBOSE},
 321    { "bat",   DEBUG_BATCH},
 322    { "pix",   DEBUG_PIXEL},
 323    { "buf",   DEBUG_BUFMGR},
 324    { "reg",   DEBUG_REGION},
 325    { "fbo",   DEBUG_FBO},
 326    { "lock",  DEBUG_LOCK},
 327    { "sync",  DEBUG_SYNC},
 328    { "prim",  DEBUG_PRIMS },
 329    { "vert",  DEBUG_VERTS },
 330    { "dri",   DEBUG_DRI },
 331    { "dma",   DEBUG_DMA },
 332    { "san",   DEBUG_SANITY },
 333    { "sleep", DEBUG_SLEEP },
 334    { "stats", DEBUG_STATS },
 335    { "tile",  DEBUG_TILE },
 336    { "sing",  DEBUG_SINGLE_THREAD },
 337    { "thre",  DEBUG_SINGLE_THREAD },
 338    { "wm",    DEBUG_WM },
 339    { "urb",   DEBUG_URB },
 340    { "vs",    DEBUG_VS },
 341    { NULL,    0 }
 342 };
 343
 344
 345 static void
 346 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 347 {
 348     struct intel_context *intel = intel_context(ctx);
 349
 350    _swrast_InvalidateState(ctx, new_state);
 351    _swsetup_InvalidateState(ctx, new_state);
 352    _vbo_InvalidateState(ctx, new_state);
 353    _tnl_InvalidateState(ctx, new_state);
 354    _tnl_invalidate_vertex_state(ctx, new_state);
 355
 356    intel->NewGLState |= new_state;
 357
 358    if (intel->vtbl.invalidate_state)
 359       intel->vtbl.invalidate_state( intel, new_state );
 360 }
 361
 362
 363 void
 364 intelFlush(GLcontext * ctx)
 365 {
 366    struct intel_context *intel = intel_context(ctx);
 367
 368    if (intel->Fallback)
 369       _swrast_flush(ctx);
 370
 371    if (!IS_965(intel->intelScreen->deviceID))
 372       INTEL_FIREVERTICES(intel);
 373
 374    /* Emit a flush so that any frontbuffer rendering that might have occurred
 375     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 376     * a flush for us.
 377     */
 378    intel_batchbuffer_emit_mi_flush(intel->batch);
 379
 380    if (intel->batch->map != intel->batch->ptr)
 381       intel_batchbuffer_flush(intel->batch);
 382 }
 383
 384 void
 385 intelFinish(GLcontext * ctx)
 386 {
 387    struct gl_framebuffer *fb = ctx->DrawBuffer;
 388    int i;
 389
 390    intelFlush(ctx);
 391
 392    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 393        struct intel_renderbuffer *irb;
 394
 395        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 396
 397        if (irb->region)
 398           dri_bo_wait_rendering(irb->region->buffer);
 399    }
 400    if (fb->_DepthBuffer) {
 401       /* XXX: Wait on buffer idle */
 402    }
 403 }
 404
 405 static void
 406 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 407 {
 408         struct intel_context *intel = intel_context( ctx );
 409         struct drm_i915_mmio io = {
 410                 .read_write = I915_MMIO_READ,
 411                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 412                 .data = &q->Result
 413         };
 414         intel->stats_wm++;
 415         intelFinish(&intel->ctx);
 416         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 417 }
 418
 419 static void
 420 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 421 {
 422         struct intel_context *intel = intel_context( ctx );
 423         GLuint64EXT tmp;
 424         struct drm_i915_mmio io = {
 425                 .read_write = I915_MMIO_READ,
 426                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 427                 .data = &tmp
 428         };
 429         intelFinish(&intel->ctx);
 430         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 431         q->Result = tmp - q->Result;
 432         q->Ready = GL_TRUE;
 433         intel->stats_wm--;
 434 }
 435
 436 /** Driver-specific fence emit implementation for the fake memory manager. */
 437 static unsigned int
 438 intel_fence_emit(void *private)
 439 {
 440    struct intel_context *intel = (struct intel_context *)private;
 441    unsigned int fence;
 442
 443    /* XXX: Need to emit a flush, if we haven't already (at least with the
 444     * current batchbuffer implementation, we have).
 445     */
 446
 447    fence = intelEmitIrqLocked(intel);
 448
 449    return fence;
 450 }
 451
 452 /** Driver-specific fence wait implementation for the fake memory manager. */
 453 static int
 454 intel_fence_wait(void *private, unsigned int cookie)
 455 {
 456    struct intel_context *intel = (struct intel_context *)private;
 457
 458    intelWaitIrq(intel, cookie);
 459
 460    return 0;
 461 }
 462
 463 static GLboolean
 464 intel_init_bufmgr(struct intel_context *intel)
 465 {
 466    intelScreenPrivate *intelScreen = intel->intelScreen;
 467    GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
 468    int gem_kernel = 0;
 469    GLboolean gem_supported;
 470    struct drm_i915_getparam gp;
 471
 472    gp.param = I915_PARAM_HAS_GEM;
 473    gp.value = &gem_kernel;
 474
 475    (void) drmCommandWriteRead(intel->driFd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 476
 477    /* If we've got a new enough DDX that's initializing GEM and giving us
 478     * object handles for the shared buffers, use that.
 479     */
 480    intel->ttm = GL_FALSE;
 481    if (intel->intelScreen->driScrnPriv->dri2.enabled)
 482        gem_supported = GL_TRUE;
 483    else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 484             gem_kernel &&
 485             intel->intelScreen->front.bo_handle != -1)
 486        gem_supported = GL_TRUE;
 487    else
 488        gem_supported = GL_FALSE;
 489
 490    if (!gem_disable && gem_supported) {
 491       int bo_reuse_mode;
 492       intel->bufmgr = intel_bufmgr_gem_init(intel->driFd,
 493                                             BATCH_SZ);
 494       if (intel->bufmgr != NULL)
 495          intel->ttm = GL_TRUE;
 496
 497       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 498       switch (bo_reuse_mode) {
 499       case DRI_CONF_BO_REUSE_DISABLED:
 500          break;
 501       case DRI_CONF_BO_REUSE_ALL:
 502          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 503          break;
 504       }
 505    }
 506    /* Otherwise, use the classic buffer manager. */
 507    if (intel->bufmgr == NULL) {
 508       if (gem_disable) {
 509          fprintf(stderr, "GEM disabled.  Using classic.\n");
 510       } else {
 511          fprintf(stderr, "Failed to initialize GEM.  "
 512                  "Falling back to classic.\n");
 513       }
 514
 515       if (intelScreen->tex.size == 0) {
 516          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 517                  __func__, __LINE__);
 518          return GL_FALSE;
 519       }
 520
 521       intel->bufmgr = intel_bufmgr_fake_init(intelScreen->tex.offset,
 522                                              intelScreen->tex.map,
 523                                              intelScreen->tex.size,
 524                                              intel_fence_emit,
 525                                              intel_fence_wait,
 526                                              intel);
 527    }
 528
 529    /* XXX bufmgr should be per-screen, not per-context */
 530    intelScreen->ttm = intel->ttm;
 531
 532    return GL_TRUE;
 533 }
 534
 535 void
 536 intelInitDriverFunctions(struct dd_function_table *functions)
 537 {
 538    _mesa_init_driver_functions(functions);
 539
 540    functions->Flush = intelFlush;
 541    functions->Finish = intelFinish;
 542    functions->GetString = intelGetString;
 543    functions->UpdateState = intelInvalidateState;
 544
 545    functions->CopyColorTable = _swrast_CopyColorTable;
 546    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 547    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 548    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 549
 550    functions->BeginQuery = intelBeginQuery;
 551    functions->EndQuery = intelEndQuery;
 552
 553    intelInitTextureFuncs(functions);
 554    intelInitStateFuncs(functions);
 555    intelInitBufferFuncs(functions);
 556    intelInitPixelFuncs(functions);
 557 }
 558
 559
 560 GLboolean
 561 intelInitContext(struct intel_context *intel,
 562                  const __GLcontextModes * mesaVis,
 563                  __DRIcontextPrivate * driContextPriv,
 564                  void *sharedContextPrivate,
 565                  struct dd_function_table *functions)
 566 {
 567    GLcontext *ctx = &intel->ctx;
 568    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 569    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 570    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 571    volatile struct drm_i915_sarea *saPriv = (struct drm_i915_sarea *)
 572       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 573    int fthrottle_mode;
 574
 575    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 576                                  functions, (void *) intel)) {
 577       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 578       return GL_FALSE;
 579    }
 580
 581    driContextPriv->driverPrivate = intel;
 582    intel->intelScreen = intelScreen;
 583    intel->driScreen = sPriv;
 584    intel->sarea = saPriv;
 585
 586    /* Dri stuff */
 587    intel->hHWContext = driContextPriv->hHWContext;
 588    intel->driFd = sPriv->fd;
 589    intel->driHwLock = sPriv->lock;
 590
 591    intel->width = intelScreen->width;
 592    intel->height = intelScreen->height;
 593
 594    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 595                        intel->driScreen->myNum,
 596                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 597    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 598       intel->maxBatchSize = 4096;
 599    else
 600       intel->maxBatchSize = BATCH_SZ;
 601
 602    if (!intel_init_bufmgr(intel))
 603       return GL_FALSE;
 604
 605    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 606
 607    /* This doesn't yet catch all non-conformant rendering, but it's a
 608     * start.
 609     */
 610    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 611       intel->strict_conformance = 1;
 612    }
 613
 614    if (intel->strict_conformance) {
 615       ctx->Const.MinLineWidth = 1.0;
 616       ctx->Const.MinLineWidthAA = 1.0;
 617       ctx->Const.MaxLineWidth = 1.0;
 618       ctx->Const.MaxLineWidthAA = 1.0;
 619       ctx->Const.LineWidthGranularity = 1.0;
 620    }
 621    else {
 622       ctx->Const.MinLineWidth = 1.0;
 623       ctx->Const.MinLineWidthAA = 1.0;
 624       ctx->Const.MaxLineWidth = 5.0;
 625       ctx->Const.MaxLineWidthAA = 5.0;
 626       ctx->Const.LineWidthGranularity = 0.5;
 627    }
 628
 629    ctx->Const.MinPointSize = 1.0;
 630    ctx->Const.MinPointSizeAA = 1.0;
 631    ctx->Const.MaxPointSize = 255.0;
 632    ctx->Const.MaxPointSizeAA = 3.0;
 633    ctx->Const.PointSizeGranularity = 1.0;
 634
 635    /* reinitialize the context point state.
 636     * It depend on constants in __GLcontextRec::Const
 637     */
 638    _mesa_init_point(ctx);
 639
 640    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 641
 642    /* Initialize the software rasterizer and helper modules. */
 643    _swrast_CreateContext(ctx);
 644    _vbo_CreateContext(ctx);
 645    _tnl_CreateContext(ctx);
 646    _swsetup_CreateContext(ctx);
 647
 648    /* Configure swrast to match hardware characteristics: */
 649    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 650    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 651
 652    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 653    intel->hw_stipple = 1;
 654
 655    /* XXX FBO: this doesn't seem to be used anywhere */
 656    switch (mesaVis->depthBits) {
 657    case 0:                     /* what to do in this case? */
 658    case 16:
 659       intel->polygon_offset_scale = 1.0;
 660       break;
 661    case 24:
 662       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 663       break;
 664    default:
 665       assert(0);
 666       break;
 667    }
 668
 669    if (IS_965(intelScreen->deviceID))
 670       intel->polygon_offset_scale /= 0xffff;
 671
 672    intel->RenderIndex = ~0;
 673
 674    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 675    intel->irqsEmitted = 0;
 676
 677    intel->do_irqs = (intel->intelScreen->irq_active &&
 678                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 679
 680    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 681
 682    _math_matrix_ctr(&intel->ViewportMatrix);
 683
 684    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 685       _mesa_printf("IRQs not active.  Exiting\n");
 686       exit(1);
 687    }
 688
 689    intelInitExtensions(ctx, GL_FALSE);
 690
 691    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 692    if (INTEL_DEBUG & DEBUG_BUFMGR)
 693       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 694
 695    if (!sPriv->dri2.enabled)
 696       intel_recreate_static_regions(intel);
 697
 698    intel->batch = intel_batchbuffer_alloc(intel);
 699
 700    intel_bufferobj_init(intel);
 701    intel_fbo_init(intel);
 702
 703    if (intel->ctx.Mesa_DXTn) {
 704       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 705       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 706    }
 707    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 708       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 709    }
 710
 711    intel->prim.primitive = ~0;
 712
 713    /* Force all software fallbacks */
 714    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 715       fprintf(stderr, "disabling 3D rasterization\n");
 716       intel->no_rast = 1;
 717    }
 718
 719    /* Disable all hardware rendering (skip emitting batches and fences/waits
 720     * to the kernel)
 721     */
 722    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 723
 724    return GL_TRUE;
 725 }
 726
 727 void
 728 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 729 {
 730    struct intel_context *intel =
 731       (struct intel_context *) driContextPriv->driverPrivate;
 732
 733    assert(intel);               /* should never be null */
 734    if (intel) {
 735       GLboolean release_texture_heaps;
 736
 737       INTEL_FIREVERTICES(intel);
 738
 739       intel->vtbl.destroy(intel);
 740
 741       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 742       _swsetup_DestroyContext(&intel->ctx);
 743       _tnl_DestroyContext(&intel->ctx);
 744       _vbo_DestroyContext(&intel->ctx);
 745
 746       _swrast_DestroyContext(&intel->ctx);
 747       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 748
 749       intel_batchbuffer_free(intel->batch);
 750       free(intel->prim.vb);
 751
 752       if (release_texture_heaps) {
 753          /* This share group is about to go away, free our private
 754           * texture object data.
 755           */
 756          if (INTEL_DEBUG & DEBUG_TEXTURE)
 757             fprintf(stderr, "do something to free texture heaps\n");
 758       }
 759
 760       /* free the Mesa context */
 761       _mesa_free_context_data(&intel->ctx);
 762
 763       dri_bufmgr_destroy(intel->bufmgr);
 764    }
 765 }
 766
 767 GLboolean
 768 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 769 {
 770    return GL_TRUE;
 771 }
 772
 773 GLboolean
 774 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 775                  __DRIdrawablePrivate * driDrawPriv,
 776                  __DRIdrawablePrivate * driReadPriv)
 777 {
 778    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 779
 780    if (driContextPriv) {
 781       struct intel_context *intel =
 782          (struct intel_context *) driContextPriv->driverPrivate;
 783       struct intel_framebuffer *intel_fb =
 784          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 785       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 786
 787
 788       /* XXX FBO temporary fix-ups! */
 789       /* if the renderbuffers don't have regions, init them from the context */
 790       if (!driContextPriv->driScreenPriv->dri2.enabled) {
 791          struct intel_renderbuffer *irbDepth
 792             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 793          struct intel_renderbuffer *irbStencil
 794             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 795
 796          if (intel_fb->color_rb[0]) {
 797             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 798                                           intel->front_region);
 799          }
 800          if (intel_fb->color_rb[1]) {
 801             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 802                                           intel->back_region);
 803          }
 804 #if 0
 805          if (intel_fb->color_rb[2]) {
 806             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 807                                           intel->third_region);
 808          }
 809 #endif
 810          if (irbDepth) {
 811             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 812          }
 813          if (irbStencil) {
 814             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 815          }
 816       }
 817
 818       /* set GLframebuffer size to match window, if needed */
 819       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 820
 821       if (driReadPriv != driDrawPriv) {
 822          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 823       }
 824
 825       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 826
 827       /* The drawbuffer won't always be updated by _mesa_make_current:
 828        */
 829       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 830
 831          if (intel->driReadDrawable != driReadPriv)
 832             intel->driReadDrawable = driReadPriv;
 833
 834          if (intel->driDrawable != driDrawPriv) {
 835             if (driDrawPriv->swap_interval == (unsigned)-1) {
 836                int i;
 837
 838                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 839                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 840                  : VBLANK_FLAG_NO_IRQ;
 841
 842                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 843                driDrawableInitVBlank(driDrawPriv);
 844                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 845
 846                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 847                   if (intel_fb->color_rb[i])
 848                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 849                }
 850             }
 851             intel->driDrawable = driDrawPriv;
 852             intelWindowMoved(intel);
 853          }
 854
 855          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 856       }
 857    }
 858    else {
 859       _mesa_make_current(NULL, NULL, NULL);
 860    }
 861
 862    return GL_TRUE;
 863 }
 864
 865 static void
 866 intelContendedLock(struct intel_context *intel, GLuint flags)
 867 {
 868    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 869    __DRIscreenPrivate *sPriv = intel->driScreen;
 870    volatile struct drm_i915_sarea *sarea = intel->sarea;
 871    int me = intel->hHWContext;
 872
 873    drmGetLock(intel->driFd, intel->hHWContext, flags);
 874    intel->locked = 1;
 875
 876    if (INTEL_DEBUG & DEBUG_LOCK)
 877       _mesa_printf("%s - got contended lock\n", __progname);
 878
 879    /* If the window moved, may need to set a new cliprect now.
 880     *
 881     * NOTE: This releases and regains the hw lock, so all state
 882     * checking must be done *after* this call:
 883     */
 884    if (dPriv)
 885        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 886
 887    if (sarea && sarea->ctxOwner != me) {
 888       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 889          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 890                  sarea->ctxOwner, me);
 891       }
 892       sarea->ctxOwner = me;
 893    }
 894
 895    /* If the last consumer of the texture memory wasn't us, notify the fake
 896     * bufmgr and record the new owner.  We should have the memory shared
 897     * between contexts of a single fake bufmgr, but this will at least make
 898     * things correct for now.
 899     */
 900    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 901       sarea->texAge = intel->hHWContext;
 902       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 903       if (INTEL_DEBUG & DEBUG_BATCH)
 904          intel_decode_context_reset();
 905       if (INTEL_DEBUG & DEBUG_BUFMGR)
 906          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 907                  sarea->ctxOwner, intel->hHWContext);
 908    }
 909
 910    if (sarea->width != intel->width || sarea->height != intel->height) {
 911        int numClipRects = intel->numClipRects;
 912
 913        /*
 914         * FIXME: Really only need to do this when drawing to a
 915         * common back- or front buffer.
 916         */
 917
 918        /*
 919         * This will essentially drop the outstanding batchbuffer on
 920         * the floor.
 921         */
 922        intel->numClipRects = 0;
 923
 924        if (intel->Fallback)
 925            _swrast_flush(&intel->ctx);
 926
 927        if (!IS_965(intel->intelScreen->deviceID))
 928            INTEL_FIREVERTICES(intel);
 929
 930        if (intel->batch->map != intel->batch->ptr)
 931            intel_batchbuffer_flush(intel->batch);
 932
 933        intel->numClipRects = numClipRects;
 934
 935        /* force window update */
 936        intel->lastStamp = 0;
 937
 938        intel->width = sarea->width;
 939        intel->height = sarea->height;
 940    }
 941
 942    /* Drawable changed?
 943     */
 944    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 945        intelWindowMoved(intel);
 946        intel->lastStamp = dPriv->lastStamp;
 947    }
 948 }
 949
 950
 951 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 952
 953 /* Lock the hardware and validate our state.
 954  */
 955 void LOCK_HARDWARE( struct intel_context *intel )
 956 {
 957     __DRIdrawable *dPriv = intel->driDrawable;
 958     __DRIscreen *sPriv = intel->driScreen;
 959     char __ret = 0;
 960     struct intel_framebuffer *intel_fb = NULL;
 961     struct intel_renderbuffer *intel_rb = NULL;
 962
 963     _glthread_LOCK_MUTEX(lockMutex);
 964     assert(!intel->locked);
 965     intel->locked = 1;
 966
 967     if (intel->driDrawable) {
 968        intel_fb = intel->driDrawable->driverPrivate;
 969
 970        if (intel_fb)
 971           intel_rb =
 972              intel_get_renderbuffer(&intel_fb->Base,
 973                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 974     }
 975
 976     if (intel_rb && dPriv->vblFlags &&
 977         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 978         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 979         drmVBlank vbl;
 980
 981         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 982
 983         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 984             vbl.request.type |= DRM_VBLANK_SECONDARY;
 985         }
 986
 987         vbl.request.sequence = intel_rb->vbl_pending;
 988         drmWaitVBlank(intel->driFd, &vbl);
 989         intel_fb->vbl_waited = vbl.reply.sequence;
 990     }
 991
 992     DRM_CAS(intel->driHwLock, intel->hHWContext,
 993         (DRM_LOCK_HELD|intel->hHWContext), __ret);
 994
 995     if (sPriv->dri2.enabled) {
 996         if (__ret)
 997             drmGetLock(intel->driFd, intel->hHWContext, 0);
 998         if (__driParseEvents(dPriv->driContextPriv, dPriv)) {
 999             intelWindowMoved(intel);
1000             intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
1001         }
1002     } else if (__ret) {
1003         intelContendedLock( intel, 0 );
1004     }
1005
1006
1007     if (INTEL_DEBUG & DEBUG_LOCK)
1008       _mesa_printf("%s - locked\n", __progname);
1009 }
1010
1011
1012 /* Unlock the hardware using the global current context
1013  */
1014 void UNLOCK_HARDWARE( struct intel_context *intel )
1015 {
1016    intel->vtbl.note_unlock( intel );
1017    intel->locked = 0;
1018
1019    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1020
1021    _glthread_UNLOCK_MUTEX(lockMutex);
1022
1023    if (INTEL_DEBUG & DEBUG_LOCK)
1024       _mesa_printf("%s - unlocked\n", __progname);
1025
1026    /**
1027     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1028     * cliprects.
1029     */
1030    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1031       intel_batchbuffer_flush(intel->batch);
1032 }
1033