src/gallium/state_trackers/dri/dri_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, Inc.
   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 VMWARE 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  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #include "utils.h"
  33 #include "xmlpool.h"
  34
  35 #include "dri_screen.h"
  36 #include "dri_context.h"
  37
  38 #include "util/u_inlines.h"
  39 #include "pipe/p_screen.h"
  40 #include "pipe/p_format.h"
  41 #include "pipe-loader/pipe_loader.h"
  42 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
  43 #include "state_tracker/drm_driver.h"
  44
  45 #include "util/u_debug.h"
  46 #include "util/u_format_s3tc.h"
  47
  48 #define MSAA_VISUAL_MAX_SAMPLES 32
  49
  50 #undef false
  51
  52 const __DRIconfigOptionsExtension gallium_config_options = {
  53    .base = { __DRI_CONFIG_OPTIONS, 1 },
  54    .xml =
  55
  56    DRI_CONF_BEGIN
  57       DRI_CONF_SECTION_PERFORMANCE
  58          DRI_CONF_MESA_GLTHREAD("false")
  59          DRI_CONF_MESA_NO_ERROR("false")
  60          DRI_CONF_DISABLE_EXT_BUFFER_AGE("false")
  61          DRI_CONF_DISABLE_OML_SYNC_CONTROL("false")
  62       DRI_CONF_SECTION_END
  63
  64       DRI_CONF_SECTION_QUALITY
  65          DRI_CONF_FORCE_S3TC_ENABLE("false")
  66          DRI_CONF_PP_CELSHADE(0)
  67          DRI_CONF_PP_NORED(0)
  68          DRI_CONF_PP_NOGREEN(0)
  69          DRI_CONF_PP_NOBLUE(0)
  70          DRI_CONF_PP_JIMENEZMLAA(0, 0, 32)
  71          DRI_CONF_PP_JIMENEZMLAA_COLOR(0, 0, 32)
  72       DRI_CONF_SECTION_END
  73
  74       DRI_CONF_SECTION_DEBUG
  75          DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  76          DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  77          DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  78          DRI_CONF_DISABLE_SHADER_BIT_ENCODING("false")
  79          DRI_CONF_FORCE_GLSL_VERSION(0)
  80          DRI_CONF_ALLOW_GLSL_EXTENSION_DIRECTIVE_MIDSHADER("false")
  81          DRI_CONF_ALLOW_GLSL_BUILTIN_VARIABLE_REDECLARATION("false")
  82          DRI_CONF_ALLOW_HIGHER_COMPAT_VERSION("false")
  83          DRI_CONF_FORCE_GLSL_ABS_SQRT("false")
  84          DRI_CONF_GLSL_CORRECT_DERIVATIVES_AFTER_DISCARD("false")
  85       DRI_CONF_SECTION_END
  86
  87       DRI_CONF_SECTION_MISCELLANEOUS
  88          DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
  89          DRI_CONF_GLSL_ZERO_INIT("false")
  90       DRI_CONF_SECTION_END
  91    DRI_CONF_END
  92 };
  93
  94 #define false 0
  95
  96 static void
  97 dri_fill_st_options(struct dri_screen *screen)
  98 {
  99    struct st_config_options *options = &screen->options;
 100    const struct driOptionCache *optionCache = &screen->optionCache;
 101
 102    options->disable_blend_func_extended =
 103       driQueryOptionb(optionCache, "disable_blend_func_extended");
 104    options->disable_glsl_line_continuations =
 105       driQueryOptionb(optionCache, "disable_glsl_line_continuations");
 106    options->disable_shader_bit_encoding =
 107       driQueryOptionb(optionCache, "disable_shader_bit_encoding");
 108    options->force_glsl_extensions_warn =
 109       driQueryOptionb(optionCache, "force_glsl_extensions_warn");
 110    options->force_glsl_version =
 111       driQueryOptioni(optionCache, "force_glsl_version");
 112    options->force_s3tc_enable =
 113       driQueryOptionb(optionCache, "force_s3tc_enable");
 114    options->allow_glsl_extension_directive_midshader =
 115       driQueryOptionb(optionCache, "allow_glsl_extension_directive_midshader");
 116    options->allow_glsl_builtin_variable_redeclaration =
 117       driQueryOptionb(optionCache, "allow_glsl_builtin_variable_redeclaration");
 118    options->allow_higher_compat_version =
 119       driQueryOptionb(optionCache, "allow_higher_compat_version");
 120    options->glsl_zero_init = driQueryOptionb(optionCache, "glsl_zero_init");
 121    options->force_glsl_abs_sqrt =
 122       driQueryOptionb(optionCache, "force_glsl_abs_sqrt");
 123
 124    driComputeOptionsSha1(optionCache, options->config_options_sha1);
 125 }
 126
 127 static const __DRIconfig **
 128 dri_fill_in_modes(struct dri_screen *screen)
 129 {
 130    static const mesa_format mesa_formats[] = {
 131       MESA_FORMAT_B8G8R8A8_UNORM,
 132       MESA_FORMAT_B8G8R8X8_UNORM,
 133       MESA_FORMAT_B8G8R8A8_SRGB,
 134       MESA_FORMAT_B8G8R8X8_SRGB,
 135       MESA_FORMAT_B5G6R5_UNORM,
 136
 137       /* The 32-bit RGBA format must not precede the 32-bit BGRA format.
 138        * Likewise for RGBX and BGRX.  Otherwise, the GLX client and the GLX
 139        * server may disagree on which format the GLXFBConfig represents,
 140        * resulting in swapped color channels.
 141        *
 142        * The problem, as of 2017-05-30:
 143        * When matching a GLXFBConfig to a __DRIconfig, GLX ignores the channel
 144        * order and chooses the first __DRIconfig with the expected channel
 145        * sizes. Specifically, GLX compares the GLXFBConfig's and __DRIconfig's
 146        * __DRI_ATTRIB_{CHANNEL}_SIZE but ignores __DRI_ATTRIB_{CHANNEL}_MASK.
 147        *
 148        * EGL does not suffer from this problem. It correctly compares the
 149        * channel masks when matching EGLConfig to __DRIconfig.
 150        */
 151
 152       /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
 153       MESA_FORMAT_R8G8B8A8_UNORM,
 154
 155       /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
 156       MESA_FORMAT_R8G8B8X8_UNORM,
 157    };
 158    static const enum pipe_format pipe_formats[] = {
 159       PIPE_FORMAT_BGRA8888_UNORM,
 160       PIPE_FORMAT_BGRX8888_UNORM,
 161       PIPE_FORMAT_BGRA8888_SRGB,
 162       PIPE_FORMAT_BGRX8888_SRGB,
 163       PIPE_FORMAT_B5G6R5_UNORM,
 164       PIPE_FORMAT_RGBA8888_UNORM,
 165       PIPE_FORMAT_RGBX8888_UNORM,
 166    };
 167    mesa_format format;
 168    __DRIconfig **configs = NULL;
 169    uint8_t depth_bits_array[5];
 170    uint8_t stencil_bits_array[5];
 171    unsigned depth_buffer_factor;
 172    unsigned msaa_samples_max;
 173    unsigned i;
 174    struct pipe_screen *p_screen = screen->base.screen;
 175    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
 176    boolean mixed_color_depth;
 177
 178    static const GLenum back_buffer_modes[] = {
 179       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 180    };
 181
 182    if (driQueryOptionb(&screen->optionCache, "always_have_depth_buffer")) {
 183       /* all visuals will have a depth buffer */
 184       depth_buffer_factor = 0;
 185    }
 186    else {
 187       depth_bits_array[0] = 0;
 188       stencil_bits_array[0] = 0;
 189       depth_buffer_factor = 1;
 190    }
 191
 192    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
 193       ? MSAA_VISUAL_MAX_SAMPLES : 1;
 194
 195    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 196                                             PIPE_TEXTURE_2D, 0,
 197                                             PIPE_BIND_DEPTH_STENCIL);
 198    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 199                                             PIPE_TEXTURE_2D, 0,
 200                                             PIPE_BIND_DEPTH_STENCIL);
 201    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 202                                             PIPE_TEXTURE_2D, 0,
 203                                             PIPE_BIND_DEPTH_STENCIL);
 204    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
 205                                             PIPE_TEXTURE_2D, 0,
 206                                             PIPE_BIND_DEPTH_STENCIL);
 207    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 208                                           PIPE_TEXTURE_2D, 0,
 209                                           PIPE_BIND_DEPTH_STENCIL);
 210    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 211                                           PIPE_TEXTURE_2D, 0,
 212                                           PIPE_BIND_DEPTH_STENCIL);
 213
 214    if (pf_z16) {
 215       depth_bits_array[depth_buffer_factor] = 16;
 216       stencil_bits_array[depth_buffer_factor++] = 0;
 217    }
 218    if (pf_x8z24 || pf_z24x8) {
 219       depth_bits_array[depth_buffer_factor] = 24;
 220       stencil_bits_array[depth_buffer_factor++] = 0;
 221       screen->d_depth_bits_last = pf_x8z24;
 222    }
 223    if (pf_s8z24 || pf_z24s8) {
 224       depth_bits_array[depth_buffer_factor] = 24;
 225       stencil_bits_array[depth_buffer_factor++] = 8;
 226       screen->sd_depth_bits_last = pf_s8z24;
 227    }
 228    if (pf_z32) {
 229       depth_bits_array[depth_buffer_factor] = 32;
 230       stencil_bits_array[depth_buffer_factor++] = 0;
 231    }
 232
 233    mixed_color_depth =
 234       p_screen->get_param(p_screen, PIPE_CAP_MIXED_COLOR_DEPTH_BITS);
 235
 236    assert(ARRAY_SIZE(mesa_formats) == ARRAY_SIZE(pipe_formats));
 237
 238    /* Add configs. */
 239    for (format = 0; format < ARRAY_SIZE(mesa_formats); format++) {
 240       __DRIconfig **new_configs = NULL;
 241       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
 242       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
 243
 244       if (!p_screen->is_format_supported(p_screen, pipe_formats[format],
 245                                          PIPE_TEXTURE_2D, 0,
 246                                          PIPE_BIND_RENDER_TARGET))
 247          continue;
 248
 249       for (i = 1; i <= msaa_samples_max; i++) {
 250          int samples = i > 1 ? i : 0;
 251
 252          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
 253                                            PIPE_TEXTURE_2D, samples,
 254                                            PIPE_BIND_RENDER_TARGET)) {
 255             msaa_modes[num_msaa_modes++] = samples;
 256          }
 257       }
 258
 259       if (num_msaa_modes) {
 260          /* Single-sample configs with an accumulation buffer. */
 261          new_configs = driCreateConfigs(mesa_formats[format],
 262                                         depth_bits_array, stencil_bits_array,
 263                                         depth_buffer_factor, back_buffer_modes,
 264                                         ARRAY_SIZE(back_buffer_modes),
 265                                         msaa_modes, 1,
 266                                         GL_TRUE, !mixed_color_depth);
 267          configs = driConcatConfigs(configs, new_configs);
 268
 269          /* Multi-sample configs without an accumulation buffer. */
 270          if (num_msaa_modes > 1) {
 271             new_configs = driCreateConfigs(mesa_formats[format],
 272                                            depth_bits_array, stencil_bits_array,
 273                                            depth_buffer_factor, back_buffer_modes,
 274                                            ARRAY_SIZE(back_buffer_modes),
 275                                            msaa_modes+1, num_msaa_modes-1,
 276                                            GL_FALSE, !mixed_color_depth);
 277             configs = driConcatConfigs(configs, new_configs);
 278          }
 279       }
 280    }
 281
 282    if (configs == NULL) {
 283       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 284       return NULL;
 285    }
 286
 287    return (const __DRIconfig **)configs;
 288 }
 289
 290 /**
 291  * Roughly the converse of dri_fill_in_modes.
 292  */
 293 void
 294 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 295                    const struct gl_config *mode)
 296 {
 297    memset(stvis, 0, sizeof(*stvis));
 298
 299    if (!mode)
 300       return;
 301
 302    /* Deduce the color format. */
 303    switch (mode->redMask) {
 304    case 0x00FF0000:
 305       if (mode->alphaMask) {
 306          assert(mode->alphaMask == 0xFF000000);
 307          stvis->color_format = mode->sRGBCapable ?
 308                                   PIPE_FORMAT_BGRA8888_SRGB :
 309                                   PIPE_FORMAT_BGRA8888_UNORM;
 310       } else {
 311          stvis->color_format = mode->sRGBCapable ?
 312                                   PIPE_FORMAT_BGRX8888_SRGB :
 313                                   PIPE_FORMAT_BGRX8888_UNORM;
 314       }
 315       break;
 316
 317    case 0x000000FF:
 318       if (mode->alphaMask) {
 319          assert(mode->alphaMask == 0xFF000000);
 320          stvis->color_format = mode->sRGBCapable ?
 321                                   PIPE_FORMAT_RGBA8888_SRGB :
 322                                   PIPE_FORMAT_RGBA8888_UNORM;
 323       } else {
 324          stvis->color_format = mode->sRGBCapable ?
 325                                   PIPE_FORMAT_RGBX8888_SRGB :
 326                                   PIPE_FORMAT_RGBX8888_UNORM;
 327       }
 328       break;
 329
 330    case 0x0000F800:
 331       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 332       break;
 333
 334    default:
 335       assert(!"unsupported visual: invalid red mask");
 336       return;
 337    }
 338
 339    if (mode->sampleBuffers) {
 340       stvis->samples = mode->samples;
 341    }
 342
 343    switch (mode->depthBits) {
 344    default:
 345    case 0:
 346       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 347       break;
 348    case 16:
 349       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 350       break;
 351    case 24:
 352       if (mode->stencilBits == 0) {
 353          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 354                                           PIPE_FORMAT_Z24X8_UNORM:
 355                                           PIPE_FORMAT_X8Z24_UNORM;
 356       } else {
 357          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 358                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
 359                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
 360       }
 361       break;
 362    case 32:
 363       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 364       break;
 365    }
 366
 367    stvis->accum_format = (mode->haveAccumBuffer) ?
 368       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 369
 370    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 371    stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 372    if (mode->doubleBufferMode) {
 373       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 374       stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
 375    }
 376    if (mode->stereoMode) {
 377       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 378       if (mode->doubleBufferMode)
 379          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 380    }
 381
 382    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 383       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 384    /* let the state tracker allocate the accum buffer */
 385 }
 386
 387 static boolean
 388 dri_get_egl_image(struct st_manager *smapi,
 389                   void *egl_image,
 390                   struct st_egl_image *stimg)
 391 {
 392    struct dri_screen *screen = (struct dri_screen *)smapi;
 393    __DRIimage *img = NULL;
 394
 395    if (screen->lookup_egl_image) {
 396       img = screen->lookup_egl_image(screen, egl_image);
 397    }
 398
 399    if (!img)
 400       return FALSE;
 401
 402    stimg->texture = NULL;
 403    pipe_resource_reference(&stimg->texture, img->texture);
 404    switch (img->dri_components) {
 405    case __DRI_IMAGE_COMPONENTS_Y_U_V:
 406       stimg->format = PIPE_FORMAT_IYUV;
 407       break;
 408    case __DRI_IMAGE_COMPONENTS_Y_UV:
 409       stimg->format = PIPE_FORMAT_NV12;
 410       break;
 411    default:
 412       stimg->format = img->texture->format;
 413       break;
 414    }
 415    stimg->level = img->level;
 416    stimg->layer = img->layer;
 417
 418    return TRUE;
 419 }
 420
 421 static int
 422 dri_get_param(struct st_manager *smapi,
 423               enum st_manager_param param)
 424 {
 425    struct dri_screen *screen = (struct dri_screen *)smapi;
 426
 427    switch(param) {
 428    case ST_MANAGER_BROKEN_INVALIDATE:
 429       return screen->broken_invalidate;
 430    default:
 431       return 0;
 432    }
 433 }
 434
 435 static void
 436 dri_destroy_option_cache(struct dri_screen * screen)
 437 {
 438    int i;
 439
 440    if (screen->optionCache.info) {
 441       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 442          free(screen->optionCache.info[i].name);
 443          free(screen->optionCache.info[i].ranges);
 444       }
 445       free(screen->optionCache.info);
 446    }
 447
 448    free(screen->optionCache.values);
 449
 450    /* Default values are copied to screen->optionCache->values in
 451     * initOptionCache. The info field, however, is a pointer copy, so don't free
 452     * that twice.
 453     */
 454    free(screen->optionCacheDefaults.values);
 455 }
 456
 457 void
 458 dri_destroy_screen_helper(struct dri_screen * screen)
 459 {
 460    if (screen->st_api && screen->st_api->destroy)
 461       screen->st_api->destroy(screen->st_api);
 462
 463    if (screen->base.screen)
 464       screen->base.screen->destroy(screen->base.screen);
 465
 466    dri_destroy_option_cache(screen);
 467    mtx_destroy(&screen->opencl_func_mutex);
 468 }
 469
 470 void
 471 dri_destroy_screen(__DRIscreen * sPriv)
 472 {
 473    struct dri_screen *screen = dri_screen(sPriv);
 474
 475    dri_destroy_screen_helper(screen);
 476
 477    pipe_loader_release(&screen->dev, 1);
 478
 479    free(screen);
 480    sPriv->driverPrivate = NULL;
 481    sPriv->extensions = NULL;
 482 }
 483
 484 static void
 485 dri_postprocessing_init(struct dri_screen *screen)
 486 {
 487    unsigned i;
 488
 489    for (i = 0; i < PP_FILTERS; i++) {
 490       screen->pp_enabled[i] = driQueryOptioni(&screen->optionCache,
 491                                               pp_filters[i].name);
 492    }
 493 }
 494
 495 static void
 496 dri_set_background_context(struct st_context_iface *st,
 497                            struct util_queue_monitoring *queue_info)
 498 {
 499    struct dri_context *ctx = (struct dri_context *)st->st_manager_private;
 500    const __DRIbackgroundCallableExtension *backgroundCallable =
 501       ctx->sPriv->dri2.backgroundCallable;
 502
 503    /* Note: Mesa will only call this function if GL multithreading is enabled
 504     * We only do that if the loader exposed the __DRI_BACKGROUND_CALLABLE
 505     * extension. So we know that backgroundCallable is not NULL.
 506     */
 507    assert(backgroundCallable);
 508    backgroundCallable->setBackgroundContext(ctx->cPriv->loaderPrivate);
 509
 510    if (ctx->hud)
 511       hud_add_queue_for_monitoring(ctx->hud, queue_info);
 512 }
 513
 514 unsigned
 515 dri_init_options_get_screen_flags(struct dri_screen *screen,
 516                                   const char* driver_name)
 517 {
 518    unsigned flags = 0;
 519
 520    driParseOptionInfo(&screen->optionCacheDefaults, gallium_config_options.xml);
 521    driParseConfigFiles(&screen->optionCache,
 522                        &screen->optionCacheDefaults,
 523                        screen->sPriv->myNum,
 524                        driver_name);
 525    dri_fill_st_options(screen);
 526
 527    if (driQueryOptionb(&screen->optionCache,
 528                        "glsl_correct_derivatives_after_discard"))
 529       flags |= PIPE_SCREEN_ENABLE_CORRECT_TGSI_DERIVATIVES_AFTER_KILL;
 530
 531    return flags;
 532 }
 533
 534 const __DRIconfig **
 535 dri_init_screen_helper(struct dri_screen *screen,
 536                        struct pipe_screen *pscreen)
 537 {
 538    screen->base.screen = pscreen;
 539    screen->base.get_egl_image = dri_get_egl_image;
 540    screen->base.get_param = dri_get_param;
 541    screen->base.set_background_context = dri_set_background_context;
 542
 543    screen->st_api = st_gl_api_create();
 544    if (!screen->st_api)
 545       return NULL;
 546
 547    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
 548       screen->target = PIPE_TEXTURE_2D;
 549    else
 550       screen->target = PIPE_TEXTURE_RECT;
 551
 552    /* Handle force_s3tc_enable. */
 553    if (!util_format_s3tc_enabled && screen->options.force_s3tc_enable) {
 554       /* Ensure libtxc_dxtn has been loaded if available.
 555        * Forcing S3TC on before calling this would prevent loading
 556        * the library.
 557        * This is just a precaution, the driver should have called it
 558        * already.
 559        */
 560       util_format_s3tc_init();
 561
 562       util_format_s3tc_enabled = TRUE;
 563    }
 564
 565    dri_postprocessing_init(screen);
 566
 567    screen->st_api->query_versions(screen->st_api, &screen->base,
 568                                   &screen->options,
 569                                   &screen->sPriv->max_gl_core_version,
 570                                   &screen->sPriv->max_gl_compat_version,
 571                                   &screen->sPriv->max_gl_es1_version,
 572                                   &screen->sPriv->max_gl_es2_version);
 573
 574    return dri_fill_in_modes(screen);
 575 }
 576
 577 /* vim: set sw=3 ts=8 sts=3 expandtab: */