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
  37 #include "util/u_inlines.h"
  38 #include "pipe/p_screen.h"
  39 #include "pipe/p_format.h"
  40 #include "pipe-loader/pipe_loader.h"
  41 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
  42 #include "state_tracker/drm_driver.h"
  43
  44 #include "util/u_debug.h"
  45 #include "util/u_format_s3tc.h"
  46
  47 #define MSAA_VISUAL_MAX_SAMPLES 32
  48
  49 #undef false
  50
  51 const __DRIconfigOptionsExtension gallium_config_options = {
  52    .base = { __DRI_CONFIG_OPTIONS, 1 },
  53    .xml =
  54
  55    DRI_CONF_BEGIN
  56       DRI_CONF_SECTION_QUALITY
  57          DRI_CONF_FORCE_S3TC_ENABLE("false")
  58          DRI_CONF_PP_CELSHADE(0)
  59          DRI_CONF_PP_NORED(0)
  60          DRI_CONF_PP_NOGREEN(0)
  61          DRI_CONF_PP_NOBLUE(0)
  62          DRI_CONF_PP_JIMENEZMLAA(0, 0, 32)
  63          DRI_CONF_PP_JIMENEZMLAA_COLOR(0, 0, 32)
  64       DRI_CONF_SECTION_END
  65
  66       DRI_CONF_SECTION_DEBUG
  67          DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  68          DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  69          DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  70          DRI_CONF_DISABLE_SHADER_BIT_ENCODING("false")
  71          DRI_CONF_FORCE_GLSL_VERSION(0)
  72       DRI_CONF_SECTION_END
  73
  74       DRI_CONF_SECTION_MISCELLANEOUS
  75          DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
  76       DRI_CONF_SECTION_END
  77    DRI_CONF_END
  78 };
  79
  80 #define false 0
  81
  82 static const __DRIconfig **
  83 dri_fill_in_modes(struct dri_screen *screen)
  84 {
  85    static const mesa_format mesa_formats[3] = {
  86       MESA_FORMAT_B8G8R8A8_UNORM,
  87       MESA_FORMAT_B8G8R8X8_UNORM,
  88       MESA_FORMAT_B5G6R5_UNORM,
  89    };
  90    static const enum pipe_format pipe_formats[3] = {
  91       PIPE_FORMAT_BGRA8888_UNORM,
  92       PIPE_FORMAT_BGRX8888_UNORM,
  93       PIPE_FORMAT_B5G6R5_UNORM,
  94    };
  95    mesa_format format;
  96    __DRIconfig **configs = NULL;
  97    uint8_t depth_bits_array[5];
  98    uint8_t stencil_bits_array[5];
  99    unsigned depth_buffer_factor;
 100    unsigned msaa_samples_max;
 101    unsigned i;
 102    struct pipe_screen *p_screen = screen->base.screen;
 103    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
 104
 105    static const GLenum back_buffer_modes[] = {
 106       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 107    };
 108
 109    if (driQueryOptionb(&screen->optionCache, "always_have_depth_buffer")) {
 110       /* all visuals will have a depth buffer */
 111       depth_buffer_factor = 0;
 112    }
 113    else {
 114       depth_bits_array[0] = 0;
 115       stencil_bits_array[0] = 0;
 116       depth_buffer_factor = 1;
 117    }
 118
 119    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
 120       ? MSAA_VISUAL_MAX_SAMPLES : 1;
 121
 122    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 123                                             PIPE_TEXTURE_2D, 0,
 124                                             PIPE_BIND_DEPTH_STENCIL);
 125    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 126                                             PIPE_TEXTURE_2D, 0,
 127                                             PIPE_BIND_DEPTH_STENCIL);
 128    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 129                                             PIPE_TEXTURE_2D, 0,
 130                                             PIPE_BIND_DEPTH_STENCIL);
 131    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
 132                                             PIPE_TEXTURE_2D, 0,
 133                                             PIPE_BIND_DEPTH_STENCIL);
 134    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 135                                           PIPE_TEXTURE_2D, 0,
 136                                           PIPE_BIND_DEPTH_STENCIL);
 137    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 138                                           PIPE_TEXTURE_2D, 0,
 139                                           PIPE_BIND_DEPTH_STENCIL);
 140
 141    if (pf_z16) {
 142       depth_bits_array[depth_buffer_factor] = 16;
 143       stencil_bits_array[depth_buffer_factor++] = 0;
 144    }
 145    if (pf_x8z24 || pf_z24x8) {
 146       depth_bits_array[depth_buffer_factor] = 24;
 147       stencil_bits_array[depth_buffer_factor++] = 0;
 148       screen->d_depth_bits_last = pf_x8z24;
 149    }
 150    if (pf_s8z24 || pf_z24s8) {
 151       depth_bits_array[depth_buffer_factor] = 24;
 152       stencil_bits_array[depth_buffer_factor++] = 8;
 153       screen->sd_depth_bits_last = pf_s8z24;
 154    }
 155    if (pf_z32) {
 156       depth_bits_array[depth_buffer_factor] = 32;
 157       stencil_bits_array[depth_buffer_factor++] = 0;
 158    }
 159
 160    assert(Elements(mesa_formats) == Elements(pipe_formats));
 161
 162    /* Add configs. */
 163    for (format = 0; format < Elements(mesa_formats); format++) {
 164       __DRIconfig **new_configs = NULL;
 165       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
 166       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
 167
 168       for (i = 1; i <= msaa_samples_max; i++) {
 169          int samples = i > 1 ? i : 0;
 170
 171          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
 172                                            PIPE_TEXTURE_2D, samples,
 173                                            PIPE_BIND_RENDER_TARGET)) {
 174             msaa_modes[num_msaa_modes++] = samples;
 175          }
 176       }
 177
 178       if (num_msaa_modes) {
 179          /* Single-sample configs with an accumulation buffer. */
 180          new_configs = driCreateConfigs(mesa_formats[format],
 181                                         depth_bits_array, stencil_bits_array,
 182                                         depth_buffer_factor, back_buffer_modes,
 183                                         Elements(back_buffer_modes),
 184                                         msaa_modes, 1,
 185                                         GL_TRUE);
 186          configs = driConcatConfigs(configs, new_configs);
 187
 188          /* Multi-sample configs without an accumulation buffer. */
 189          if (num_msaa_modes > 1) {
 190             new_configs = driCreateConfigs(mesa_formats[format],
 191                                            depth_bits_array, stencil_bits_array,
 192                                            depth_buffer_factor, back_buffer_modes,
 193                                            Elements(back_buffer_modes),
 194                                            msaa_modes+1, num_msaa_modes-1,
 195                                            GL_FALSE);
 196             configs = driConcatConfigs(configs, new_configs);
 197          }
 198       }
 199    }
 200
 201    if (configs == NULL) {
 202       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 203       return NULL;
 204    }
 205
 206    return (const __DRIconfig **)configs;
 207 }
 208
 209 /* The Gallium way to force MSAA. */
 210 DEBUG_GET_ONCE_NUM_OPTION(msaa, "GALLIUM_MSAA", 0);
 211
 212 /* The NVIDIA way to force MSAA. The same variable is used by the NVIDIA
 213  * driver. */
 214 DEBUG_GET_ONCE_NUM_OPTION(msaa_nv, "__GL_FSAA_MODE", 0);
 215
 216 static void
 217 dri_force_msaa_visual(struct st_visual *stvis,
 218                       struct pipe_screen *screen)
 219 {
 220    int i;
 221    int samples = debug_get_option_msaa();
 222
 223    if (!samples)
 224       samples = debug_get_option_msaa_nv();
 225
 226    if (samples <= 1)
 227       return; /* nothing to do */
 228
 229    /* Choose a supported sample count greater than or equal to samples. */
 230    for (i = samples; i <= MSAA_VISUAL_MAX_SAMPLES; i++) {
 231       if (screen->is_format_supported(screen, stvis->color_format,
 232                                       PIPE_TEXTURE_2D, i,
 233                                       PIPE_BIND_RENDER_TARGET)) {
 234          stvis->samples = i;
 235          break;
 236       }
 237    }
 238 }
 239
 240 /**
 241  * Roughly the converse of dri_fill_in_modes.
 242  */
 243 void
 244 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 245                    const struct gl_config *mode)
 246 {
 247    memset(stvis, 0, sizeof(*stvis));
 248
 249    if (!mode)
 250       return;
 251
 252    if (mode->redBits == 8) {
 253       if (mode->alphaBits == 8)
 254          stvis->color_format = PIPE_FORMAT_BGRA8888_UNORM;
 255       else
 256          stvis->color_format = PIPE_FORMAT_BGRX8888_UNORM;
 257    } else {
 258       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 259    }
 260
 261    if (mode->sampleBuffers) {
 262       stvis->samples = mode->samples;
 263    }
 264    else {
 265       /* This must be done after stvis->color_format is set. */
 266       dri_force_msaa_visual(stvis, screen->base.screen);
 267    }
 268
 269    switch (mode->depthBits) {
 270    default:
 271    case 0:
 272       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 273       break;
 274    case 16:
 275       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 276       break;
 277    case 24:
 278       if (mode->stencilBits == 0) {
 279          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 280                                           PIPE_FORMAT_Z24X8_UNORM:
 281                                           PIPE_FORMAT_X8Z24_UNORM;
 282       } else {
 283          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 284                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
 285                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
 286       }
 287       break;
 288    case 32:
 289       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 290       break;
 291    }
 292
 293    stvis->accum_format = (mode->haveAccumBuffer) ?
 294       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 295
 296    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 297    stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 298    if (mode->doubleBufferMode) {
 299       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 300       stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
 301    }
 302    if (mode->stereoMode) {
 303       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 304       if (mode->doubleBufferMode)
 305          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 306    }
 307
 308    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 309       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 310    /* let the state tracker allocate the accum buffer */
 311 }
 312
 313 static boolean
 314 dri_get_egl_image(struct st_manager *smapi,
 315                   void *egl_image,
 316                   struct st_egl_image *stimg)
 317 {
 318    struct dri_screen *screen = (struct dri_screen *)smapi;
 319    __DRIimage *img = NULL;
 320
 321    if (screen->lookup_egl_image) {
 322       img = screen->lookup_egl_image(screen, egl_image);
 323    }
 324
 325    if (!img)
 326       return FALSE;
 327
 328    stimg->texture = NULL;
 329    pipe_resource_reference(&stimg->texture, img->texture);
 330    stimg->level = img->level;
 331    stimg->layer = img->layer;
 332
 333    return TRUE;
 334 }
 335
 336 static int
 337 dri_get_param(struct st_manager *smapi,
 338               enum st_manager_param param)
 339 {
 340    struct dri_screen *screen = (struct dri_screen *)smapi;
 341
 342    switch(param) {
 343    case ST_MANAGER_BROKEN_INVALIDATE:
 344       return screen->broken_invalidate;
 345    default:
 346       return 0;
 347    }
 348 }
 349
 350 static void
 351 dri_destroy_option_cache(struct dri_screen * screen)
 352 {
 353    int i;
 354
 355    if (screen->optionCache.info) {
 356       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 357          free(screen->optionCache.info[i].name);
 358          free(screen->optionCache.info[i].ranges);
 359       }
 360       free(screen->optionCache.info);
 361    }
 362
 363    free(screen->optionCache.values);
 364
 365    /* Default values are copied to screen->optionCache->values in
 366     * initOptionCache. The info field, however, is a pointer copy, so don't free
 367     * that twice.
 368     */
 369    free(screen->optionCacheDefaults.values);
 370 }
 371
 372 void
 373 dri_destroy_screen_helper(struct dri_screen * screen)
 374 {
 375    if (screen->st_api && screen->st_api->destroy)
 376       screen->st_api->destroy(screen->st_api);
 377
 378    if (screen->base.screen)
 379       screen->base.screen->destroy(screen->base.screen);
 380
 381    dri_destroy_option_cache(screen);
 382 }
 383
 384 void
 385 dri_destroy_screen(__DRIscreen * sPriv)
 386 {
 387    struct dri_screen *screen = dri_screen(sPriv);
 388
 389    dri_destroy_screen_helper(screen);
 390
 391 #if !GALLIUM_STATIC_TARGETS
 392    pipe_loader_release(&screen->dev, 1);
 393 #endif // !GALLIUM_STATIC_TARGETS
 394
 395    free(screen);
 396    sPriv->driverPrivate = NULL;
 397    sPriv->extensions = NULL;
 398 }
 399
 400 static void
 401 dri_postprocessing_init(struct dri_screen *screen)
 402 {
 403    unsigned i;
 404
 405    for (i = 0; i < PP_FILTERS; i++) {
 406       screen->pp_enabled[i] = driQueryOptioni(&screen->optionCache,
 407                                               pp_filters[i].name);
 408    }
 409 }
 410
 411 const __DRIconfig **
 412 dri_init_screen_helper(struct dri_screen *screen,
 413                        struct pipe_screen *pscreen,
 414                        const char* driver_name)
 415 {
 416    screen->base.screen = pscreen;
 417    if (!screen->base.screen) {
 418       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 419       return NULL;
 420    }
 421
 422    screen->base.get_egl_image = dri_get_egl_image;
 423    screen->base.get_param = dri_get_param;
 424
 425    screen->st_api = st_gl_api_create();
 426    if (!screen->st_api)
 427       return NULL;
 428
 429    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
 430       screen->target = PIPE_TEXTURE_2D;
 431    else
 432       screen->target = PIPE_TEXTURE_RECT;
 433
 434    driParseOptionInfo(&screen->optionCacheDefaults, gallium_config_options.xml);
 435
 436    driParseConfigFiles(&screen->optionCache,
 437                        &screen->optionCacheDefaults,
 438                        screen->sPriv->myNum,
 439                        driver_name);
 440
 441    /* Handle force_s3tc_enable. */
 442    if (!util_format_s3tc_enabled &&
 443        driQueryOptionb(&screen->optionCache, "force_s3tc_enable")) {
 444       /* Ensure libtxc_dxtn has been loaded if available.
 445        * Forcing S3TC on before calling this would prevent loading
 446        * the library.
 447        * This is just a precaution, the driver should have called it
 448        * already.
 449        */
 450       util_format_s3tc_init();
 451
 452       util_format_s3tc_enabled = TRUE;
 453    }
 454
 455    dri_postprocessing_init(screen);
 456
 457    /* gallium drivers don't declare what version of GL they support, so we
 458     * check the computed Mesa context version after context creation and fail
 459     * out then.
 460     */
 461    if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
 462       screen->sPriv->max_gl_compat_version = 30;
 463    if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_CORE_MASK)
 464       screen->sPriv->max_gl_core_version = 33;
 465    if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
 466       screen->sPriv->max_gl_es1_version = 11;
 467    if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
 468       screen->sPriv->max_gl_es2_version = 30;
 469
 470    return dri_fill_in_modes(screen);
 471 }
 472
 473 /* vim: set sw=3 ts=8 sts=3 expandtab: */