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