src/mesa/drivers/dri/intel/intel_screen.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 #include <errno.h>
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/framebuffer.h"
  32 #include "main/renderbuffer.h"
  33 #include "main/hash.h"
  34 #include "main/fbobject.h"
  35 #include "main/mfeatures.h"
  36 #include "main/version.h"
  37 #include "swrast/s_renderbuffer.h"
  38
  39 #include "utils.h"
  40 #include "xmlpool.h"
  41
  42 PUBLIC const char __driConfigOptions[] =
  43    DRI_CONF_BEGIN
  44    DRI_CONF_SECTION_PERFORMANCE
  45       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  46       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  47        * DRI_CONF_BO_REUSE_ALL
  48        */
  49       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  50          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  51             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  52             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  53          DRI_CONF_DESC_END
  54       DRI_CONF_OPT_END
  55
  56       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  57          DRI_CONF_DESC(en, "Enable texture tiling")
  58       DRI_CONF_OPT_END
  59
  60       DRI_CONF_OPT_BEGIN(hiz, bool, true)
  61          DRI_CONF_DESC(en, "Enable Hierarchical Z on gen6+")
  62       DRI_CONF_OPT_END
  63
  64       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  65          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  66       DRI_CONF_OPT_END
  67
  68       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  69          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  70       DRI_CONF_OPT_END
  71
  72    DRI_CONF_SECTION_END
  73    DRI_CONF_SECTION_QUALITY
  74       DRI_CONF_FORCE_S3TC_ENABLE(false)
  75       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  76    DRI_CONF_SECTION_END
  77    DRI_CONF_SECTION_DEBUG
  78      DRI_CONF_NO_RAST(false)
  79      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  80      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  81      DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN(false)
  82
  83       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  84          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  85       DRI_CONF_OPT_END
  86
  87       DRI_CONF_OPT_BEGIN(shader_precompile, bool, false)
  88          DRI_CONF_DESC(en, "Perform code generation at shader link time.")
  89       DRI_CONF_OPT_END
  90    DRI_CONF_SECTION_END
  91 DRI_CONF_END;
  92
  93 const GLuint __driNConfigOptions = 14;
  94
  95 #include "intel_batchbuffer.h"
  96 #include "intel_buffers.h"
  97 #include "intel_bufmgr.h"
  98 #include "intel_chipset.h"
  99 #include "intel_fbo.h"
 100 #include "intel_mipmap_tree.h"
 101 #include "intel_screen.h"
 102 #include "intel_tex.h"
 103 #include "intel_regions.h"
 104
 105 #include "i915_drm.h"
 106
 107 #ifdef USE_NEW_INTERFACE
 108 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 109 #endif /*USE_NEW_INTERFACE */
 110
 111 void
 112 aub_dump_bmp(struct gl_context *ctx)
 113 {
 114    struct gl_framebuffer *fb = ctx->DrawBuffer;
 115
 116    for (int i = 0; i < fb->_NumColorDrawBuffers; i++) {
 117       struct intel_renderbuffer *irb =
 118          intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 119
 120       if (irb && irb->mt) {
 121          enum aub_dump_bmp_format format;
 122
 123          switch (irb->Base.Base.Format) {
 124          case MESA_FORMAT_ARGB8888:
 125          case MESA_FORMAT_XRGB8888:
 126             format = AUB_DUMP_BMP_FORMAT_ARGB_8888;
 127             break;
 128          default:
 129             continue;
 130          }
 131
 132          drm_intel_gem_bo_aub_dump_bmp(irb->mt->region->bo,
 133                                        irb->draw_x,
 134                                        irb->draw_y,
 135                                        irb->Base.Base.Width,
 136                                        irb->Base.Base.Height,
 137                                        format,
 138                                        irb->mt->region->pitch *
 139                                        irb->mt->region->cpp,
 140                                        0);
 141       }
 142    }
 143 }
 144
 145 static const __DRItexBufferExtension intelTexBufferExtension = {
 146     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 147    intelSetTexBuffer,
 148    intelSetTexBuffer2,
 149 };
 150
 151 static void
 152 intelDRI2Flush(__DRIdrawable *drawable)
 153 {
 154    GET_CURRENT_CONTEXT(ctx);
 155    struct intel_context *intel = intel_context(ctx);
 156    if (intel == NULL)
 157       return;
 158
 159    if (intel->gen < 4)
 160       INTEL_FIREVERTICES(intel);
 161
 162    intel->need_throttle = true;
 163
 164    if (intel->batch.used)
 165       intel_batchbuffer_flush(intel);
 166
 167    if (INTEL_DEBUG & DEBUG_AUB) {
 168       aub_dump_bmp(ctx);
 169    }
 170 }
 171
 172 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 173     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 174     intelDRI2Flush,
 175     dri2InvalidateDrawable,
 176 };
 177
 178 static __DRIimage *
 179 intel_create_image_from_name(__DRIscreen *screen,
 180                              int width, int height, int format,
 181                              int name, int pitch, void *loaderPrivate)
 182 {
 183     struct intel_screen *intelScreen = screen->driverPrivate;
 184     __DRIimage *image;
 185     int cpp;
 186
 187     image = CALLOC(sizeof *image);
 188     if (image == NULL)
 189         return NULL;
 190
 191     switch (format) {
 192     case __DRI_IMAGE_FORMAT_RGB565:
 193        image->format = MESA_FORMAT_RGB565;
 194        image->internal_format = GL_RGB;
 195        image->data_type = GL_UNSIGNED_BYTE;
 196        break;
 197     case __DRI_IMAGE_FORMAT_XRGB8888:
 198        image->format = MESA_FORMAT_XRGB8888;
 199        image->internal_format = GL_RGB;
 200        image->data_type = GL_UNSIGNED_BYTE;
 201        break;
 202     case __DRI_IMAGE_FORMAT_ARGB8888:
 203        image->format = MESA_FORMAT_ARGB8888;
 204        image->internal_format = GL_RGBA;
 205        image->data_type = GL_UNSIGNED_BYTE;
 206        break;
 207     case __DRI_IMAGE_FORMAT_ABGR8888:
 208        image->format = MESA_FORMAT_RGBA8888_REV;
 209        image->internal_format = GL_RGBA;
 210        image->data_type = GL_UNSIGNED_BYTE;
 211        break;
 212     default:
 213        free(image);
 214        return NULL;
 215     }
 216
 217     image->data = loaderPrivate;
 218     cpp = _mesa_get_format_bytes(image->format);
 219
 220     image->region = intel_region_alloc_for_handle(intelScreen,
 221                                                   cpp, width, height,
 222                                                   pitch, name, "image");
 223     if (image->region == NULL) {
 224        FREE(image);
 225        return NULL;
 226     }
 227
 228     return image;
 229 }
 230
 231 static __DRIimage *
 232 intel_create_image_from_renderbuffer(__DRIcontext *context,
 233                                      int renderbuffer, void *loaderPrivate)
 234 {
 235    __DRIimage *image;
 236    struct intel_context *intel = context->driverPrivate;
 237    struct gl_renderbuffer *rb;
 238    struct intel_renderbuffer *irb;
 239
 240    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 241    if (!rb) {
 242       _mesa_error(&intel->ctx,
 243                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 244       return NULL;
 245    }
 246
 247    irb = intel_renderbuffer(rb);
 248    image = CALLOC(sizeof *image);
 249    if (image == NULL)
 250       return NULL;
 251
 252    image->internal_format = rb->InternalFormat;
 253    image->format = rb->Format;
 254    image->data_type = GL_UNSIGNED_BYTE;
 255    image->data = loaderPrivate;
 256    intel_region_reference(&image->region, irb->mt->region);
 257
 258    return image;
 259 }
 260
 261 static void
 262 intel_destroy_image(__DRIimage *image)
 263 {
 264     intel_region_release(&image->region);
 265     FREE(image);
 266 }
 267
 268 static __DRIimage *
 269 intel_create_image(__DRIscreen *screen,
 270                    int width, int height, int format,
 271                    unsigned int use,
 272                    void *loaderPrivate)
 273 {
 274    __DRIimage *image;
 275    struct intel_screen *intelScreen = screen->driverPrivate;
 276    uint32_t tiling;
 277    int cpp;
 278
 279    tiling = I915_TILING_X;
 280    if (use & __DRI_IMAGE_USE_CURSOR) {
 281       if (width != 64 || height != 64)
 282          return NULL;
 283       tiling = I915_TILING_NONE;
 284    }
 285
 286    image = CALLOC(sizeof *image);
 287    if (image == NULL)
 288       return NULL;
 289
 290    image->dri_format = format;
 291
 292    switch (format) {
 293    case __DRI_IMAGE_FORMAT_RGB565:
 294       image->format = MESA_FORMAT_RGB565;
 295       image->internal_format = GL_RGB;
 296       image->data_type = GL_UNSIGNED_BYTE;
 297       break;
 298    case __DRI_IMAGE_FORMAT_XRGB8888:
 299       image->format = MESA_FORMAT_XRGB8888;
 300       image->internal_format = GL_RGB;
 301       image->data_type = GL_UNSIGNED_BYTE;
 302       break;
 303    case __DRI_IMAGE_FORMAT_ARGB8888:
 304       image->format = MESA_FORMAT_ARGB8888;
 305       image->internal_format = GL_RGBA;
 306       image->data_type = GL_UNSIGNED_BYTE;
 307       break;
 308     case __DRI_IMAGE_FORMAT_ABGR8888:
 309        image->format = MESA_FORMAT_RGBA8888_REV;
 310        image->internal_format = GL_RGBA;
 311        image->data_type = GL_UNSIGNED_BYTE;
 312        break;
 313    default:
 314       free(image);
 315       return NULL;
 316    }
 317
 318    image->data = loaderPrivate;
 319    cpp = _mesa_get_format_bytes(image->format);
 320
 321    image->region =
 322       intel_region_alloc(intelScreen, tiling,
 323                          cpp, width, height, true);
 324    if (image->region == NULL) {
 325       FREE(image);
 326       return NULL;
 327    }
 328
 329    return image;
 330 }
 331
 332 static GLboolean
 333 intel_query_image(__DRIimage *image, int attrib, int *value)
 334 {
 335    switch (attrib) {
 336    case __DRI_IMAGE_ATTRIB_STRIDE:
 337       *value = image->region->pitch * image->region->cpp;
 338       return true;
 339    case __DRI_IMAGE_ATTRIB_HANDLE:
 340       *value = image->region->bo->handle;
 341       return true;
 342    case __DRI_IMAGE_ATTRIB_NAME:
 343       return intel_region_flink(image->region, (uint32_t *) value);
 344    case __DRI_IMAGE_ATTRIB_FORMAT:
 345       return image->dri_format;
 346    default:
 347       return false;
 348    }
 349 }
 350
 351 static __DRIimage *
 352 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 353 {
 354    __DRIimage *image;
 355
 356    image = CALLOC(sizeof *image);
 357    if (image == NULL)
 358       return NULL;
 359
 360    intel_region_reference(&image->region, orig_image->region);
 361    if (image->region == NULL) {
 362       FREE(image);
 363       return NULL;
 364    }
 365
 366    image->internal_format = orig_image->internal_format;
 367    image->format          = orig_image->format;
 368    image->data_type       = orig_image->data_type;
 369    image->data            = loaderPrivate;
 370
 371    return image;
 372 }
 373
 374 static GLboolean
 375 intel_validate_usage(__DRIimage *image, unsigned int use)
 376 {
 377    if (use & __DRI_IMAGE_USE_CURSOR) {
 378       if (image->region->width != 64 || image->region->height != 64)
 379          return GL_FALSE;
 380    }
 381
 382    return GL_TRUE;
 383 }
 384
 385 static struct __DRIimageExtensionRec intelImageExtension = {
 386     { __DRI_IMAGE, 3 },
 387     intel_create_image_from_name,
 388     intel_create_image_from_renderbuffer,
 389     intel_destroy_image,
 390     intel_create_image,
 391     intel_query_image,
 392     intel_dup_image,
 393     intel_validate_usage
 394 };
 395
 396 static const __DRIextension *intelScreenExtensions[] = {
 397     &intelTexBufferExtension.base,
 398     &intelFlushExtension.base,
 399     &intelImageExtension.base,
 400     &dri2ConfigQueryExtension.base,
 401     NULL
 402 };
 403
 404 static bool
 405 intel_get_param(__DRIscreen *psp, int param, int *value)
 406 {
 407    int ret;
 408    struct drm_i915_getparam gp;
 409
 410    memset(&gp, 0, sizeof(gp));
 411    gp.param = param;
 412    gp.value = value;
 413
 414    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 415    if (ret) {
 416       if (ret != -EINVAL)
 417          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 418       return false;
 419    }
 420
 421    return true;
 422 }
 423
 424 static bool
 425 intel_get_boolean(__DRIscreen *psp, int param)
 426 {
 427    int value = 0;
 428    return intel_get_param(psp, param, &value) && value;
 429 }
 430
 431 static void
 432 nop_callback(GLuint key, void *data, void *userData)
 433 {
 434 }
 435
 436 static void
 437 intelDestroyScreen(__DRIscreen * sPriv)
 438 {
 439    struct intel_screen *intelScreen = sPriv->driverPrivate;
 440
 441    dri_bufmgr_destroy(intelScreen->bufmgr);
 442    driDestroyOptionInfo(&intelScreen->optionCache);
 443
 444    /* Some regions may still have references to them at this point, so
 445     * flush the hash table to prevent _mesa_DeleteHashTable() from
 446     * complaining about the hash not being empty; */
 447    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 448    _mesa_DeleteHashTable(intelScreen->named_regions);
 449
 450    FREE(intelScreen);
 451    sPriv->driverPrivate = NULL;
 452 }
 453
 454
 455 /**
 456  * This is called when we need to set up GL rendering to a new X window.
 457  */
 458 static GLboolean
 459 intelCreateBuffer(__DRIscreen * driScrnPriv,
 460                   __DRIdrawable * driDrawPriv,
 461                   const struct gl_config * mesaVis, GLboolean isPixmap)
 462 {
 463    struct intel_renderbuffer *rb;
 464    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->driverPrivate;
 465
 466    if (isPixmap) {
 467       return false;          /* not implemented */
 468    }
 469    else {
 470       gl_format rgbFormat;
 471
 472       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 473
 474       if (!fb)
 475          return false;
 476
 477       _mesa_initialize_window_framebuffer(fb, mesaVis);
 478
 479       if (mesaVis->redBits == 5)
 480          rgbFormat = MESA_FORMAT_RGB565;
 481       else if (mesaVis->alphaBits == 0)
 482          rgbFormat = MESA_FORMAT_XRGB8888;
 483       else
 484          rgbFormat = MESA_FORMAT_ARGB8888;
 485
 486       /* setup the hardware-based renderbuffers */
 487       rb = intel_create_renderbuffer(rgbFormat);
 488       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base.Base);
 489
 490       if (mesaVis->doubleBufferMode) {
 491          rb = intel_create_renderbuffer(rgbFormat);
 492          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base.Base);
 493       }
 494
 495       /*
 496        * Assert here that the gl_config has an expected depth/stencil bit
 497        * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 498        * which constructs the advertised configs.)
 499        */
 500       if (mesaVis->depthBits == 24) {
 501          assert(mesaVis->stencilBits == 8);
 502
 503          if (screen->hw_has_separate_stencil
 504              && screen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE) {
 505             /*
 506              * Request a separate stencil buffer even if we do not yet know if
 507              * the screen supports it. (See comments for
 508              * enum intel_dri2_has_hiz).
 509              */
 510             rb = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 511             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 512             rb = intel_create_renderbuffer(MESA_FORMAT_S8);
 513             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 514          } else {
 515             /*
 516              * Use combined depth/stencil. Note that the renderbuffer is
 517              * attached to two attachment points.
 518              */
 519             rb = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 520             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base.Base);
 521             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base.Base);
 522          }
 523       }
 524       else if (mesaVis->depthBits == 16) {
 525          assert(mesaVis->stencilBits == 0);
 526          /* just 16-bit depth buffer, no hw stencil */
 527          struct intel_renderbuffer *depthRb
 528             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 529          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base.Base);
 530       }
 531       else {
 532          assert(mesaVis->depthBits == 0);
 533          assert(mesaVis->stencilBits == 0);
 534       }
 535
 536       /* now add any/all software-based renderbuffers we may need */
 537       _swrast_add_soft_renderbuffers(fb,
 538                                      false, /* never sw color */
 539                                      false, /* never sw depth */
 540                                      false, /* never sw stencil */
 541                                      mesaVis->accumRedBits > 0,
 542                                      false, /* never sw alpha */
 543                                      false  /* never sw aux */ );
 544       driDrawPriv->driverPrivate = fb;
 545
 546       return true;
 547    }
 548 }
 549
 550 static void
 551 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 552 {
 553     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 554
 555     _mesa_reference_framebuffer(&fb, NULL);
 556 }
 557
 558 /* There are probably better ways to do this, such as an
 559  * init-designated function to register chipids and createcontext
 560  * functions.
 561  */
 562 extern bool
 563 i830CreateContext(const struct gl_config *mesaVis,
 564                   __DRIcontext *driContextPriv,
 565                   void *sharedContextPrivate);
 566
 567 extern bool
 568 i915CreateContext(int api,
 569                   const struct gl_config *mesaVis,
 570                   __DRIcontext *driContextPriv,
 571                   void *sharedContextPrivate);
 572 extern bool
 573 brwCreateContext(int api,
 574                  const struct gl_config *mesaVis,
 575                  __DRIcontext *driContextPriv,
 576                  void *sharedContextPrivate);
 577
 578 static GLboolean
 579 intelCreateContext(gl_api api,
 580                    const struct gl_config * mesaVis,
 581                    __DRIcontext * driContextPriv,
 582                    unsigned major_version,
 583                    unsigned minor_version,
 584                    uint32_t flags,
 585                    unsigned *error,
 586                    void *sharedContextPrivate)
 587 {
 588    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 589    struct intel_screen *intelScreen = sPriv->driverPrivate;
 590    bool success = false;
 591
 592 #ifdef I915
 593    if (IS_9XX(intelScreen->deviceID)) {
 594       if (!IS_965(intelScreen->deviceID)) {
 595          success = i915CreateContext(api, mesaVis, driContextPriv,
 596                                      sharedContextPrivate);
 597       }
 598    } else {
 599       intelScreen->no_vbo = true;
 600       success = i830CreateContext(mesaVis, driContextPriv,
 601                                   sharedContextPrivate);
 602    }
 603 #else
 604    if (IS_965(intelScreen->deviceID))
 605       success = brwCreateContext(api, mesaVis,
 606                               driContextPriv,
 607                               sharedContextPrivate);
 608 #endif
 609
 610    if (success) {
 611       struct gl_context *ctx =
 612          (struct gl_context *) driContextPriv->driverPrivate;
 613
 614       _mesa_compute_version(ctx);
 615       if (ctx->VersionMajor > major_version
 616           || (ctx->VersionMajor == major_version
 617               && ctx->VersionMinor >= minor_version)) {
 618          *error = __DRI_CTX_ERROR_BAD_VERSION;
 619          return true;
 620       }
 621
 622       intelDestroyContext(driContextPriv);
 623    } else {
 624       *error = __DRI_CTX_ERROR_NO_MEMORY;
 625       fprintf(stderr, "Unrecognized deviceID 0x%x\n", intelScreen->deviceID);
 626    }
 627
 628    return false;
 629 }
 630
 631 static bool
 632 intel_init_bufmgr(struct intel_screen *intelScreen)
 633 {
 634    __DRIscreen *spriv = intelScreen->driScrnPriv;
 635    int num_fences = 0;
 636
 637    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 638
 639    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 640    if (intelScreen->bufmgr == NULL) {
 641       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 642               __func__, __LINE__);
 643       return false;
 644    }
 645
 646    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 647        num_fences == 0) {
 648       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 649       return false;
 650    }
 651
 652    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 653
 654    intelScreen->named_regions = _mesa_NewHashTable();
 655
 656    intelScreen->relaxed_relocations = 0;
 657    intelScreen->relaxed_relocations |=
 658       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 659
 660    return true;
 661 }
 662
 663 /**
 664  * Override intel_screen.hw_has_separate_stencil with environment variable
 665  * INTEL_SEPARATE_STENCIL.
 666  *
 667  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 668  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 669  * is ignored.
 670  */
 671 static void
 672 intel_override_separate_stencil(struct intel_screen *screen)
 673 {
 674    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 675    if (!s) {
 676       return;
 677    } else if (!strncmp("0", s, 2)) {
 678       screen->hw_has_separate_stencil = false;
 679    } else if (!strncmp("1", s, 2)) {
 680       screen->hw_has_separate_stencil = true;
 681    } else {
 682       fprintf(stderr,
 683               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 684               "invalid value and is ignored", s);
 685    }
 686 }
 687
 688 static bool
 689 intel_detect_swizzling(struct intel_screen *screen)
 690 {
 691    drm_intel_bo *buffer;
 692    unsigned long flags = 0;
 693    unsigned long aligned_pitch;
 694    uint32_t tiling = I915_TILING_X;
 695    uint32_t swizzle_mode = 0;
 696
 697    buffer = drm_intel_bo_alloc_tiled(screen->bufmgr, "swizzle test",
 698                                      64, 64, 4,
 699                                      &tiling, &aligned_pitch, flags);
 700    if (buffer == NULL)
 701       return false;
 702
 703    drm_intel_bo_get_tiling(buffer, &tiling, &swizzle_mode);
 704    drm_intel_bo_unreference(buffer);
 705
 706    if (swizzle_mode == I915_BIT_6_SWIZZLE_NONE)
 707       return false;
 708    else
 709       return true;
 710 }
 711
 712 /**
 713  * This is the driver specific part of the createNewScreen entry point.
 714  * Called when using DRI2.
 715  *
 716  * \return the struct gl_config supported by this driver
 717  */
 718 static const
 719 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 720 {
 721    struct intel_screen *intelScreen;
 722    GLenum fb_format[3];
 723    GLenum fb_type[3];
 724    unsigned int api_mask;
 725
 726    static const GLenum back_buffer_modes[] = {
 727        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 728    };
 729    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 730    int color;
 731    __DRIconfig **configs = NULL;
 732
 733    /* Allocate the private area */
 734    intelScreen = CALLOC(sizeof *intelScreen);
 735    if (!intelScreen) {
 736       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 737       return false;
 738    }
 739    /* parse information in __driConfigOptions */
 740    driParseOptionInfo(&intelScreen->optionCache,
 741                       __driConfigOptions, __driNConfigOptions);
 742
 743    intelScreen->driScrnPriv = psp;
 744    psp->driverPrivate = (void *) intelScreen;
 745
 746    if (!intel_init_bufmgr(intelScreen))
 747        return false;
 748
 749    intelScreen->deviceID = drm_intel_bufmgr_gem_get_devid(intelScreen->bufmgr);
 750
 751    intelScreen->kernel_has_gen7_sol_reset =
 752       intel_get_boolean(intelScreen->driScrnPriv,
 753                         I915_PARAM_HAS_GEN7_SOL_RESET);
 754
 755    if (IS_GEN7(intelScreen->deviceID)) {
 756       intelScreen->gen = 7;
 757    } else if (IS_GEN6(intelScreen->deviceID)) {
 758       intelScreen->gen = 6;
 759    } else if (IS_GEN5(intelScreen->deviceID)) {
 760       intelScreen->gen = 5;
 761    } else if (IS_965(intelScreen->deviceID)) {
 762       intelScreen->gen = 4;
 763    } else if (IS_9XX(intelScreen->deviceID)) {
 764       intelScreen->gen = 3;
 765    } else {
 766       intelScreen->gen = 2;
 767    }
 768
 769    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 6;
 770    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
 771    intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_UNKNOWN;
 772
 773    intelScreen->hw_has_llc =
 774       intel_get_boolean(intelScreen->driScrnPriv,
 775               I915_PARAM_HAS_LLC);
 776
 777    intel_override_separate_stencil(intelScreen);
 778
 779    api_mask = (1 << __DRI_API_OPENGL);
 780 #if FEATURE_ES1
 781    api_mask |= (1 << __DRI_API_GLES);
 782 #endif
 783 #if FEATURE_ES2
 784    api_mask |= (1 << __DRI_API_GLES2);
 785 #endif
 786
 787    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
 788       psp->api_mask = api_mask;
 789
 790    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
 791
 792    psp->extensions = intelScreenExtensions;
 793
 794    msaa_samples_array[0] = 0;
 795
 796    fb_format[0] = GL_RGB;
 797    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 798
 799    fb_format[1] = GL_BGR;
 800    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 801
 802    fb_format[2] = GL_BGRA;
 803    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 804
 805    depth_bits[0] = 0;
 806    stencil_bits[0] = 0;
 807
 808    /* Generate a rich set of useful configs that do not include an
 809     * accumulation buffer.
 810     */
 811    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 812       __DRIconfig **new_configs;
 813       int depth_factor;
 814
 815       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 816        * buffer that has a diffferent number of bits per pixel than the color
 817        * buffer.  This isn't yet supported here.
 818        */
 819       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 820          depth_bits[1] = 16;
 821          stencil_bits[1] = 0;
 822       } else {
 823          depth_bits[1] = 24;
 824          stencil_bits[1] = 8;
 825       }
 826
 827       depth_factor = 2;
 828
 829       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 830                                      depth_bits,
 831                                      stencil_bits,
 832                                      depth_factor,
 833                                      back_buffer_modes,
 834                                      ARRAY_SIZE(back_buffer_modes),
 835                                      msaa_samples_array,
 836                                      ARRAY_SIZE(msaa_samples_array),
 837                                      false);
 838       if (configs == NULL)
 839          configs = new_configs;
 840       else
 841          configs = driConcatConfigs(configs, new_configs);
 842    }
 843
 844    /* Generate the minimum possible set of configs that include an
 845     * accumulation buffer.
 846     */
 847    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 848       __DRIconfig **new_configs;
 849
 850       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 851          depth_bits[0] = 16;
 852          stencil_bits[0] = 0;
 853       } else {
 854          depth_bits[0] = 24;
 855          stencil_bits[0] = 8;
 856       }
 857
 858       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 859                                      depth_bits, stencil_bits, 1,
 860                                      back_buffer_modes + 1, 1,
 861                                      msaa_samples_array, 1,
 862                                      true);
 863       if (configs == NULL)
 864          configs = new_configs;
 865       else
 866          configs = driConcatConfigs(configs, new_configs);
 867    }
 868
 869    if (configs == NULL) {
 870       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 871               __LINE__);
 872       return NULL;
 873    }
 874
 875    return (const __DRIconfig **)configs;
 876 }
 877
 878 struct intel_buffer {
 879    __DRIbuffer base;
 880    struct intel_region *region;
 881 };
 882
 883 /**
 884  * \brief Get tiling format for a DRI buffer.
 885  *
 886  * \param attachment is the buffer's attachmet point, such as
 887  *        __DRI_BUFFER_DEPTH.
 888  * \param out_tiling is the returned tiling format for buffer.
 889  * \return false if attachment is unrecognized or is incompatible with screen.
 890  */
 891 static bool
 892 intel_get_dri_buffer_tiling(struct intel_screen *screen,
 893                             uint32_t attachment,
 894                             uint32_t *out_tiling)
 895 {
 896    if (screen->gen < 4) {
 897       *out_tiling = I915_TILING_X;
 898       return true;
 899    }
 900
 901    switch (attachment) {
 902    case __DRI_BUFFER_DEPTH:
 903    case __DRI_BUFFER_DEPTH_STENCIL:
 904    case __DRI_BUFFER_HIZ:
 905       *out_tiling = I915_TILING_Y;
 906       return true;
 907    case __DRI_BUFFER_ACCUM:
 908    case __DRI_BUFFER_FRONT_LEFT:
 909    case __DRI_BUFFER_FRONT_RIGHT:
 910    case __DRI_BUFFER_BACK_LEFT:
 911    case __DRI_BUFFER_BACK_RIGHT:
 912    case __DRI_BUFFER_FAKE_FRONT_LEFT:
 913    case __DRI_BUFFER_FAKE_FRONT_RIGHT:
 914       *out_tiling = I915_TILING_X;
 915       return true;
 916    case __DRI_BUFFER_STENCIL:
 917       /* The stencil buffer is W tiled. However, we request from the kernel
 918        * a non-tiled buffer because the GTT is incapable of W fencing.
 919        */
 920       *out_tiling = I915_TILING_NONE;
 921       return true;
 922    default:
 923       if(unlikely(INTEL_DEBUG & DEBUG_DRI)) {
 924          fprintf(stderr, "error: %s: unrecognized DRI buffer attachment 0x%x\n",
 925                  __FUNCTION__, attachment);
 926       }
 927        return false;
 928    }
 929 }
 930
 931 static __DRIbuffer *
 932 intelAllocateBuffer(__DRIscreen *screen,
 933                     unsigned attachment, unsigned format,
 934                     int width, int height)
 935 {
 936    struct intel_buffer *intelBuffer;
 937    struct intel_screen *intelScreen = screen->driverPrivate;
 938
 939    uint32_t tiling;
 940    uint32_t region_width;
 941    uint32_t region_height;
 942    uint32_t region_cpp;
 943
 944    bool ok = true;
 945
 946    ok = intel_get_dri_buffer_tiling(intelScreen, attachment, &tiling);
 947    if (!ok)
 948       return NULL;
 949
 950    intelBuffer = CALLOC(sizeof *intelBuffer);
 951    if (intelBuffer == NULL)
 952       return NULL;
 953
 954    if (attachment == __DRI_BUFFER_STENCIL) {
 955       /* Stencil buffers use W tiling, a tiling format that the DRM functions
 956        * don't properly account for.  Therefore, when we allocate a stencil
 957        * buffer that is private to Mesa (see intel_miptree_create), we round
 958        * the height and width up to the next multiple of the tile size (64x64)
 959        * and then ask DRM to allocate an untiled buffer.  Consequently, the
 960        * height and the width stored in the stencil buffer's region structure
 961        * are always multiples of 64, even if the stencil buffer itself is
 962        * smaller.
 963        *
 964        * To avoid inconsistencies between how we represent private buffers and
 965        * buffers shared with the window system, round up the height and width
 966        * for window system buffers too.
 967        */
 968       region_width = ALIGN(width, 64);
 969       region_height = ALIGN(height, 64);
 970    } else {
 971       region_width = width;
 972       region_height = height;
 973    }
 974
 975    region_cpp = format / 8;
 976
 977    intelBuffer->region = intel_region_alloc(intelScreen,
 978                                             tiling,
 979                                             region_cpp,
 980                                             region_width,
 981                                             region_height,
 982                                             true);
 983
 984    if (intelBuffer->region == NULL) {
 985            FREE(intelBuffer);
 986            return NULL;
 987    }
 988
 989    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
 990
 991    intelBuffer->base.attachment = attachment;
 992    intelBuffer->base.cpp = intelBuffer->region->cpp;
 993    intelBuffer->base.pitch =
 994          intelBuffer->region->pitch * intelBuffer->region->cpp;
 995
 996    return &intelBuffer->base;
 997 }
 998
 999 static void
1000 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
1001 {
1002    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
1003
1004    intel_region_release(&intelBuffer->region);
1005    free(intelBuffer);
1006 }
1007
1008
1009 const struct __DriverAPIRec driDriverAPI = {
1010    .InitScreen           = intelInitScreen2,
1011    .DestroyScreen        = intelDestroyScreen,
1012    .CreateContext        = intelCreateContext,
1013    .DestroyContext       = intelDestroyContext,
1014    .CreateBuffer         = intelCreateBuffer,
1015    .DestroyBuffer        = intelDestroyBuffer,
1016    .MakeCurrent          = intelMakeCurrent,
1017    .UnbindContext        = intelUnbindContext,
1018    .AllocateBuffer       = intelAllocateBuffer,
1019    .ReleaseBuffer        = intelReleaseBuffer
1020 };
1021
1022 /* This is the table of extensions that the loader will dlsym() for. */
1023 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1024     &driCoreExtension.base,
1025     &driDRI2Extension.base,
1026     NULL
1027 };