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
  37 #include "utils.h"
  38 #include "xmlpool.h"
  39
  40 PUBLIC const char __driConfigOptions[] =
  41    DRI_CONF_BEGIN
  42    DRI_CONF_SECTION_PERFORMANCE
  43       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  44       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  45        * DRI_CONF_BO_REUSE_ALL
  46        */
  47       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  48          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  49             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  50             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  51          DRI_CONF_DESC_END
  52       DRI_CONF_OPT_END
  53
  54       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  55          DRI_CONF_DESC(en, "Enable texture tiling")
  56       DRI_CONF_OPT_END
  57
  58       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  59          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  60       DRI_CONF_OPT_END
  61
  62       DRI_CONF_OPT_BEGIN(fragment_shader, bool, true)
  63          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  64       DRI_CONF_OPT_END
  65
  66    DRI_CONF_SECTION_END
  67    DRI_CONF_SECTION_QUALITY
  68       DRI_CONF_FORCE_S3TC_ENABLE(false)
  69       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  70    DRI_CONF_SECTION_END
  71    DRI_CONF_SECTION_DEBUG
  72      DRI_CONF_NO_RAST(false)
  73      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  74      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  75
  76       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  77          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  78       DRI_CONF_OPT_END
  79    DRI_CONF_SECTION_END
  80 DRI_CONF_END;
  81
  82 const GLuint __driNConfigOptions = 11;
  83
  84 #include "intel_batchbuffer.h"
  85 #include "intel_buffers.h"
  86 #include "intel_bufmgr.h"
  87 #include "intel_chipset.h"
  88 #include "intel_fbo.h"
  89 #include "intel_screen.h"
  90 #include "intel_tex.h"
  91 #include "intel_regions.h"
  92
  93 #include "i915_drm.h"
  94
  95 #ifdef USE_NEW_INTERFACE
  96 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  97 #endif /*USE_NEW_INTERFACE */
  98
  99 static const __DRItexBufferExtension intelTexBufferExtension = {
 100     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 101    intelSetTexBuffer,
 102    intelSetTexBuffer2,
 103 };
 104
 105 static void
 106 intelDRI2Flush(__DRIdrawable *drawable)
 107 {
 108    GET_CURRENT_CONTEXT(ctx);
 109    struct intel_context *intel = intel_context(ctx);
 110
 111    if (intel->gen < 4)
 112       INTEL_FIREVERTICES(intel);
 113
 114    intel->need_throttle = true;
 115
 116    if (intel->batch.used)
 117       intel_batchbuffer_flush(intel);
 118 }
 119
 120 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 121     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 122     intelDRI2Flush,
 123     dri2InvalidateDrawable,
 124 };
 125
 126 static __DRIimage *
 127 intel_create_image_from_name(__DRIscreen *screen,
 128                              int width, int height, int format,
 129                              int name, int pitch, void *loaderPrivate)
 130 {
 131     struct intel_screen *intelScreen = screen->private;
 132     __DRIimage *image;
 133     int cpp;
 134
 135     image = CALLOC(sizeof *image);
 136     if (image == NULL)
 137         return NULL;
 138
 139     switch (format) {
 140     case __DRI_IMAGE_FORMAT_RGB565:
 141        image->format = MESA_FORMAT_RGB565;
 142        image->internal_format = GL_RGB;
 143        image->data_type = GL_UNSIGNED_BYTE;
 144        break;
 145     case __DRI_IMAGE_FORMAT_XRGB8888:
 146        image->format = MESA_FORMAT_XRGB8888;
 147        image->internal_format = GL_RGB;
 148        image->data_type = GL_UNSIGNED_BYTE;
 149        break;
 150     case __DRI_IMAGE_FORMAT_ARGB8888:
 151        image->format = MESA_FORMAT_ARGB8888;
 152        image->internal_format = GL_RGBA;
 153        image->data_type = GL_UNSIGNED_BYTE;
 154        break;
 155     case __DRI_IMAGE_FORMAT_ABGR8888:
 156        image->format = MESA_FORMAT_RGBA8888_REV;
 157        image->internal_format = GL_RGBA;
 158        image->data_type = GL_UNSIGNED_BYTE;
 159        break;
 160     default:
 161        free(image);
 162        return NULL;
 163     }
 164
 165     image->data = loaderPrivate;
 166     cpp = _mesa_get_format_bytes(image->format);
 167
 168     image->region = intel_region_alloc_for_handle(intelScreen,
 169                                                   cpp, width, height,
 170                                                   pitch, name, "image");
 171     if (image->region == NULL) {
 172        FREE(image);
 173        return NULL;
 174     }
 175
 176     return image;
 177 }
 178
 179 static __DRIimage *
 180 intel_create_image_from_renderbuffer(__DRIcontext *context,
 181                                      int renderbuffer, void *loaderPrivate)
 182 {
 183    __DRIimage *image;
 184    struct intel_context *intel = context->driverPrivate;
 185    struct gl_renderbuffer *rb;
 186    struct intel_renderbuffer *irb;
 187
 188    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 189    if (!rb) {
 190       _mesa_error(&intel->ctx,
 191                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 192       return NULL;
 193    }
 194
 195    irb = intel_renderbuffer(rb);
 196    image = CALLOC(sizeof *image);
 197    if (image == NULL)
 198       return NULL;
 199
 200    image->internal_format = rb->InternalFormat;
 201    image->format = rb->Format;
 202    image->data_type = rb->DataType;
 203    image->data = loaderPrivate;
 204    intel_region_reference(&image->region, irb->region);
 205
 206    return image;
 207 }
 208
 209 static void
 210 intel_destroy_image(__DRIimage *image)
 211 {
 212     intel_region_release(&image->region);
 213     FREE(image);
 214 }
 215
 216 static __DRIimage *
 217 intel_create_image(__DRIscreen *screen,
 218                    int width, int height, int format,
 219                    unsigned int use,
 220                    void *loaderPrivate)
 221 {
 222    __DRIimage *image;
 223    struct intel_screen *intelScreen = screen->private;
 224    uint32_t tiling;
 225    int cpp;
 226
 227    tiling = I915_TILING_X;
 228    if (use & __DRI_IMAGE_USE_CURSOR) {
 229       if (width != 64 || height != 64)
 230          return NULL;
 231       tiling = I915_TILING_NONE;
 232    }
 233
 234    image = CALLOC(sizeof *image);
 235    if (image == NULL)
 236       return NULL;
 237
 238    switch (format) {
 239    case __DRI_IMAGE_FORMAT_RGB565:
 240       image->format = MESA_FORMAT_RGB565;
 241       image->internal_format = GL_RGB;
 242       image->data_type = GL_UNSIGNED_BYTE;
 243       break;
 244    case __DRI_IMAGE_FORMAT_XRGB8888:
 245       image->format = MESA_FORMAT_XRGB8888;
 246       image->internal_format = GL_RGB;
 247       image->data_type = GL_UNSIGNED_BYTE;
 248       break;
 249    case __DRI_IMAGE_FORMAT_ARGB8888:
 250       image->format = MESA_FORMAT_ARGB8888;
 251       image->internal_format = GL_RGBA;
 252       image->data_type = GL_UNSIGNED_BYTE;
 253       break;
 254     case __DRI_IMAGE_FORMAT_ABGR8888:
 255        image->format = MESA_FORMAT_RGBA8888_REV;
 256        image->internal_format = GL_RGBA;
 257        image->data_type = GL_UNSIGNED_BYTE;
 258        break;
 259    default:
 260       free(image);
 261       return NULL;
 262    }
 263
 264    image->data = loaderPrivate;
 265    cpp = _mesa_get_format_bytes(image->format);
 266
 267    image->region =
 268       intel_region_alloc(intelScreen, tiling,
 269                          cpp, width, height, true);
 270    if (image->region == NULL) {
 271       FREE(image);
 272       return NULL;
 273    }
 274
 275    return image;
 276 }
 277
 278 static GLboolean
 279 intel_query_image(__DRIimage *image, int attrib, int *value)
 280 {
 281    switch (attrib) {
 282    case __DRI_IMAGE_ATTRIB_STRIDE:
 283       *value = image->region->pitch * image->region->cpp;
 284       return true;
 285    case __DRI_IMAGE_ATTRIB_HANDLE:
 286       *value = image->region->bo->handle;
 287       return true;
 288    case __DRI_IMAGE_ATTRIB_NAME:
 289       return intel_region_flink(image->region, (uint32_t *) value);
 290    default:
 291       return false;
 292    }
 293 }
 294
 295 static __DRIimage *
 296 intel_dup_image(__DRIimage *orig_image, void *loaderPrivate)
 297 {
 298    __DRIimage *image;
 299
 300    image = CALLOC(sizeof *image);
 301    if (image == NULL)
 302       return NULL;
 303
 304    intel_region_reference(&image->region, orig_image->region);
 305    if (image->region == NULL) {
 306       FREE(image);
 307       return NULL;
 308    }
 309
 310    image->internal_format = orig_image->internal_format;
 311    image->format          = orig_image->format;
 312    image->data_type       = orig_image->data_type;
 313    image->data            = loaderPrivate;
 314
 315    return image;
 316 }
 317
 318 static struct __DRIimageExtensionRec intelImageExtension = {
 319     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 320     intel_create_image_from_name,
 321     intel_create_image_from_renderbuffer,
 322     intel_destroy_image,
 323     intel_create_image,
 324     intel_query_image,
 325     intel_dup_image
 326 };
 327
 328 static const __DRIextension *intelScreenExtensions[] = {
 329     &intelTexBufferExtension.base,
 330     &intelFlushExtension.base,
 331     &intelImageExtension.base,
 332     &dri2ConfigQueryExtension.base,
 333     NULL
 334 };
 335
 336 static bool
 337 intel_get_param(__DRIscreen *psp, int param, int *value)
 338 {
 339    int ret;
 340    struct drm_i915_getparam gp;
 341
 342    gp.param = param;
 343    gp.value = value;
 344
 345    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 346    if (ret) {
 347       if (ret != -EINVAL)
 348          _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 349       return false;
 350    }
 351
 352    return true;
 353 }
 354
 355 static bool
 356 intel_get_boolean(__DRIscreen *psp, int param)
 357 {
 358    int value = 0;
 359    return intel_get_param(psp, param, &value) && value;
 360 }
 361
 362 static void
 363 nop_callback(GLuint key, void *data, void *userData)
 364 {
 365 }
 366
 367 static void
 368 intelDestroyScreen(__DRIscreen * sPriv)
 369 {
 370    struct intel_screen *intelScreen = sPriv->private;
 371
 372    dri_bufmgr_destroy(intelScreen->bufmgr);
 373    driDestroyOptionInfo(&intelScreen->optionCache);
 374
 375    /* Some regions may still have references to them at this point, so
 376     * flush the hash table to prevent _mesa_DeleteHashTable() from
 377     * complaining about the hash not being empty; */
 378    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 379    _mesa_DeleteHashTable(intelScreen->named_regions);
 380
 381    FREE(intelScreen);
 382    sPriv->private = NULL;
 383 }
 384
 385
 386 /**
 387  * This is called when we need to set up GL rendering to a new X window.
 388  */
 389 static GLboolean
 390 intelCreateBuffer(__DRIscreen * driScrnPriv,
 391                   __DRIdrawable * driDrawPriv,
 392                   const struct gl_config * mesaVis, GLboolean isPixmap)
 393 {
 394    struct intel_renderbuffer *rb;
 395    struct intel_screen *screen = (struct intel_screen*) driScrnPriv->private;
 396
 397    if (isPixmap) {
 398       return false;          /* not implemented */
 399    }
 400    else {
 401       gl_format rgbFormat;
 402
 403       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 404
 405       if (!fb)
 406          return false;
 407
 408       _mesa_initialize_window_framebuffer(fb, mesaVis);
 409
 410       if (mesaVis->redBits == 5)
 411          rgbFormat = MESA_FORMAT_RGB565;
 412       else if (mesaVis->alphaBits == 0)
 413          rgbFormat = MESA_FORMAT_XRGB8888;
 414       else
 415          rgbFormat = MESA_FORMAT_ARGB8888;
 416
 417       /* setup the hardware-based renderbuffers */
 418       rb = intel_create_renderbuffer(rgbFormat);
 419       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 420
 421       if (mesaVis->doubleBufferMode) {
 422          rb = intel_create_renderbuffer(rgbFormat);
 423          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 424       }
 425
 426       /*
 427        * Assert here that the gl_config has an expected depth/stencil bit
 428        * combination: one of d24/s8, d16/s0, d0/s0. (See intelInitScreen2(),
 429        * which constructs the advertised configs.)
 430        */
 431       if (mesaVis->depthBits == 24) {
 432          assert(mesaVis->stencilBits == 8);
 433
 434          if (screen->hw_has_separate_stencil
 435              && screen->dri2_has_hiz != INTEL_DRI2_HAS_HIZ_FALSE) {
 436             /*
 437              * Request a separate stencil buffer even if we do not yet know if
 438              * the screen supports it. (See comments for
 439              * enum intel_dri2_has_hiz).
 440              */
 441             rb = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 442             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base);
 443             rb = intel_create_renderbuffer(MESA_FORMAT_S8);
 444             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base);
 445          } else {
 446             /*
 447              * Use combined depth/stencil. Note that the renderbuffer is
 448              * attached to two attachment points.
 449              */
 450             rb = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 451             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &rb->Base);
 452             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &rb->Base);
 453          }
 454       }
 455       else if (mesaVis->depthBits == 16) {
 456          assert(mesaVis->stencilBits == 0);
 457          /* just 16-bit depth buffer, no hw stencil */
 458          struct intel_renderbuffer *depthRb
 459             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 460          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 461       }
 462       else {
 463          assert(mesaVis->depthBits == 0);
 464          assert(mesaVis->stencilBits == 0);
 465       }
 466
 467       /* now add any/all software-based renderbuffers we may need */
 468       _mesa_add_soft_renderbuffers(fb,
 469                                    false, /* never sw color */
 470                                    false, /* never sw depth */
 471                                    false, /* never sw stencil */
 472                                    mesaVis->accumRedBits > 0,
 473                                    false, /* never sw alpha */
 474                                    false  /* never sw aux */ );
 475       driDrawPriv->driverPrivate = fb;
 476
 477       return true;
 478    }
 479 }
 480
 481 static void
 482 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 483 {
 484     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 485
 486     _mesa_reference_framebuffer(&fb, NULL);
 487 }
 488
 489 /* There are probably better ways to do this, such as an
 490  * init-designated function to register chipids and createcontext
 491  * functions.
 492  */
 493 extern bool
 494 i830CreateContext(const struct gl_config *mesaVis,
 495                   __DRIcontext *driContextPriv,
 496                   void *sharedContextPrivate);
 497
 498 extern bool
 499 i915CreateContext(int api,
 500                   const struct gl_config *mesaVis,
 501                   __DRIcontext *driContextPriv,
 502                   void *sharedContextPrivate);
 503 extern bool
 504 brwCreateContext(int api,
 505                  const struct gl_config *mesaVis,
 506                  __DRIcontext *driContextPriv,
 507                  void *sharedContextPrivate);
 508
 509 static GLboolean
 510 intelCreateContext(gl_api api,
 511                    const struct gl_config * mesaVis,
 512                    __DRIcontext * driContextPriv,
 513                    void *sharedContextPrivate)
 514 {
 515    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 516    struct intel_screen *intelScreen = sPriv->private;
 517
 518 #ifdef I915
 519    if (IS_9XX(intelScreen->deviceID)) {
 520       if (!IS_965(intelScreen->deviceID)) {
 521          return i915CreateContext(api, mesaVis, driContextPriv,
 522                                   sharedContextPrivate);
 523       }
 524    } else {
 525       intelScreen->no_vbo = true;
 526       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 527    }
 528 #else
 529    if (IS_965(intelScreen->deviceID))
 530       return brwCreateContext(api, mesaVis,
 531                               driContextPriv, sharedContextPrivate);
 532 #endif
 533    fprintf(stderr, "Unrecognized deviceID 0x%x\n", intelScreen->deviceID);
 534    return false;
 535 }
 536
 537 static bool
 538 intel_init_bufmgr(struct intel_screen *intelScreen)
 539 {
 540    __DRIscreen *spriv = intelScreen->driScrnPriv;
 541    int num_fences = 0;
 542
 543    intelScreen->no_hw = (getenv("INTEL_NO_HW") != NULL ||
 544                          getenv("INTEL_DEVID_OVERRIDE") != NULL);
 545
 546    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 547    if (intelScreen->bufmgr == NULL) {
 548       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 549               __func__, __LINE__);
 550       return false;
 551    }
 552
 553    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 554        num_fences == 0) {
 555       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 556       return false;
 557    }
 558
 559    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 560
 561    intelScreen->named_regions = _mesa_NewHashTable();
 562
 563    intelScreen->relaxed_relocations = 0;
 564    intelScreen->relaxed_relocations |=
 565       intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0;
 566
 567    return true;
 568 }
 569
 570 /**
 571  * Override intel_screen.hw_has_hiz with environment variable INTEL_HIZ.
 572  *
 573  * Valid values for INTEL_HIZ are "0" and "1". If an invalid valid value is
 574  * encountered, a warning is emitted and INTEL_HIZ is ignored.
 575  */
 576 static void
 577 intel_override_hiz(struct intel_screen *intel)
 578 {
 579    const char *s = getenv("INTEL_HIZ");
 580    if (!s) {
 581       return;
 582    } else if (!strncmp("0", s, 2)) {
 583       intel->hw_has_hiz = false;
 584    } else if (!strncmp("1", s, 2)) {
 585       intel->hw_has_hiz = true;
 586    } else {
 587       fprintf(stderr,
 588               "warning: env variable INTEL_HIZ=\"%s\" has invalid value "
 589               "and is ignored", s);
 590    }
 591 }
 592
 593 /**
 594  * Override intel_screen.hw_has_separate_stencil with environment variable
 595  * INTEL_SEPARATE_STENCIL.
 596  *
 597  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 598  * valid value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL
 599  * is ignored.
 600  */
 601 static void
 602 intel_override_separate_stencil(struct intel_screen *screen)
 603 {
 604    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 605    if (!s) {
 606       return;
 607    } else if (!strncmp("0", s, 2)) {
 608       screen->hw_has_separate_stencil = false;
 609    } else if (!strncmp("1", s, 2)) {
 610       screen->hw_has_separate_stencil = true;
 611    } else {
 612       fprintf(stderr,
 613               "warning: env variable INTEL_SEPARATE_STENCIL=\"%s\" has "
 614               "invalid value and is ignored", s);
 615    }
 616 }
 617
 618 /**
 619  * This is the driver specific part of the createNewScreen entry point.
 620  * Called when using DRI2.
 621  *
 622  * \return the struct gl_config supported by this driver
 623  */
 624 static const
 625 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 626 {
 627    struct intel_screen *intelScreen;
 628    GLenum fb_format[3];
 629    GLenum fb_type[3];
 630    unsigned int api_mask;
 631    char *devid_override;
 632
 633    static const GLenum back_buffer_modes[] = {
 634        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 635    };
 636    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 637    int color;
 638    __DRIconfig **configs = NULL;
 639
 640    /* Allocate the private area */
 641    intelScreen = CALLOC(sizeof *intelScreen);
 642    if (!intelScreen) {
 643       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 644       return false;
 645    }
 646    /* parse information in __driConfigOptions */
 647    driParseOptionInfo(&intelScreen->optionCache,
 648                       __driConfigOptions, __driNConfigOptions);
 649
 650    intelScreen->driScrnPriv = psp;
 651    psp->private = (void *) intelScreen;
 652
 653    /* Determine chipset ID */
 654    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 655                         &intelScreen->deviceID))
 656       return false;
 657
 658    /* Allow an override of the device ID for the purpose of making the
 659     * driver produce dumps for debugging of new chipset enablement.
 660     * This implies INTEL_NO_HW, to avoid programming your actual GPU
 661     * incorrectly.
 662     */
 663    devid_override = getenv("INTEL_DEVID_OVERRIDE");
 664    if (devid_override) {
 665       intelScreen->deviceID = strtod(devid_override, NULL);
 666    }
 667
 668    if (IS_GEN7(intelScreen->deviceID)) {
 669       intelScreen->gen = 7;
 670    } else if (IS_GEN6(intelScreen->deviceID)) {
 671       intelScreen->gen = 6;
 672    } else if (IS_GEN5(intelScreen->deviceID)) {
 673       intelScreen->gen = 5;
 674    } else if (IS_965(intelScreen->deviceID)) {
 675       intelScreen->gen = 4;
 676    } else if (IS_9XX(intelScreen->deviceID)) {
 677       intelScreen->gen = 3;
 678    } else {
 679       intelScreen->gen = 2;
 680    }
 681
 682    /*
 683     * FIXME: The hiz and separate stencil fields need updating once the
 684     * FIXME: features are completely implemented for a given chipset.
 685     */
 686    intelScreen->hw_has_separate_stencil = intelScreen->gen >= 7;
 687    intelScreen->hw_must_use_separate_stencil = intelScreen->gen >= 7;
 688    intelScreen->hw_has_hiz = false;
 689    intelScreen->dri2_has_hiz = INTEL_DRI2_HAS_HIZ_UNKNOWN;
 690
 691    intel_override_hiz(intelScreen);
 692    intel_override_separate_stencil(intelScreen);
 693
 694    api_mask = (1 << __DRI_API_OPENGL);
 695 #if FEATURE_ES1
 696    api_mask |= (1 << __DRI_API_GLES);
 697 #endif
 698 #if FEATURE_ES2
 699    api_mask |= (1 << __DRI_API_GLES2);
 700 #endif
 701
 702    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
 703       psp->api_mask = api_mask;
 704
 705    if (!intel_init_bufmgr(intelScreen))
 706        return false;
 707
 708    psp->extensions = intelScreenExtensions;
 709
 710    msaa_samples_array[0] = 0;
 711
 712    fb_format[0] = GL_RGB;
 713    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 714
 715    fb_format[1] = GL_BGR;
 716    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 717
 718    fb_format[2] = GL_BGRA;
 719    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 720
 721    depth_bits[0] = 0;
 722    stencil_bits[0] = 0;
 723
 724    /* Generate a rich set of useful configs that do not include an
 725     * accumulation buffer.
 726     */
 727    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 728       __DRIconfig **new_configs;
 729       int depth_factor;
 730
 731       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 732        * buffer that has a diffferent number of bits per pixel than the color
 733        * buffer.  This isn't yet supported here.
 734        */
 735       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 736          depth_bits[1] = 16;
 737          stencil_bits[1] = 0;
 738       } else {
 739          depth_bits[1] = 24;
 740          stencil_bits[1] = 8;
 741       }
 742
 743       depth_factor = 2;
 744
 745       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 746                                      depth_bits,
 747                                      stencil_bits,
 748                                      depth_factor,
 749                                      back_buffer_modes,
 750                                      ARRAY_SIZE(back_buffer_modes),
 751                                      msaa_samples_array,
 752                                      ARRAY_SIZE(msaa_samples_array),
 753                                      false);
 754       if (configs == NULL)
 755          configs = new_configs;
 756       else
 757          configs = driConcatConfigs(configs, new_configs);
 758    }
 759
 760    /* Generate the minimum possible set of configs that include an
 761     * accumulation buffer.
 762     */
 763    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 764       __DRIconfig **new_configs;
 765
 766       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 767          depth_bits[0] = 16;
 768          stencil_bits[0] = 0;
 769       } else {
 770          depth_bits[0] = 24;
 771          stencil_bits[0] = 8;
 772       }
 773
 774       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 775                                      depth_bits, stencil_bits, 1,
 776                                      back_buffer_modes + 1, 1,
 777                                      msaa_samples_array, 1,
 778                                      true);
 779       if (configs == NULL)
 780          configs = new_configs;
 781       else
 782          configs = driConcatConfigs(configs, new_configs);
 783    }
 784
 785    if (configs == NULL) {
 786       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 787               __LINE__);
 788       return NULL;
 789    }
 790
 791    return (const __DRIconfig **)configs;
 792 }
 793
 794 struct intel_buffer {
 795    __DRIbuffer base;
 796    struct intel_region *region;
 797 };
 798
 799 static __DRIbuffer *
 800 intelAllocateBuffer(__DRIscreen *screen,
 801                     unsigned attachment, unsigned format,
 802                     int width, int height)
 803 {
 804    struct intel_buffer *intelBuffer;
 805    struct intel_screen *intelScreen = screen->private;
 806    uint32_t tiling;
 807
 808    intelBuffer = CALLOC(sizeof *intelBuffer);
 809    if (intelBuffer == NULL)
 810       return NULL;
 811
 812    if ((attachment == __DRI_BUFFER_DEPTH ||
 813         attachment == __DRI_BUFFER_STENCIL ||
 814         attachment == __DRI_BUFFER_DEPTH_STENCIL) &&
 815        intelScreen->gen >= 4)
 816       tiling = I915_TILING_Y;
 817    else
 818       tiling = I915_TILING_X;
 819
 820    intelBuffer->region = intel_region_alloc(intelScreen, tiling,
 821                                             format / 8, width, height, true);
 822
 823    if (intelBuffer->region == NULL) {
 824            FREE(intelBuffer);
 825            return NULL;
 826    }
 827
 828    intel_region_flink(intelBuffer->region, &intelBuffer->base.name);
 829
 830    intelBuffer->base.attachment = attachment;
 831    intelBuffer->base.cpp = intelBuffer->region->cpp;
 832    intelBuffer->base.pitch =
 833          intelBuffer->region->pitch * intelBuffer->region->cpp;
 834
 835    return &intelBuffer->base;
 836 }
 837
 838 static void
 839 intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
 840 {
 841    struct intel_buffer *intelBuffer = (struct intel_buffer *) buffer;
 842
 843    intel_region_release(&intelBuffer->region);
 844    free(intelBuffer);
 845 }
 846
 847
 848 const struct __DriverAPIRec driDriverAPI = {
 849    .DestroyScreen        = intelDestroyScreen,
 850    .CreateContext        = intelCreateContext,
 851    .DestroyContext       = intelDestroyContext,
 852    .CreateBuffer         = intelCreateBuffer,
 853    .DestroyBuffer        = intelDestroyBuffer,
 854    .MakeCurrent          = intelMakeCurrent,
 855    .UnbindContext        = intelUnbindContext,
 856    .InitScreen2          = intelInitScreen2,
 857    .AllocateBuffer       = intelAllocateBuffer,
 858    .ReleaseBuffer        = intelReleaseBuffer
 859 };
 860
 861 /* This is the table of extensions that the loader will dlsym() for. */
 862 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 863     &driCoreExtension.base,
 864     &driDRI2Extension.base,
 865     NULL
 866 };