src/gallium/state_trackers/dri/common/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 "state_tracker/st_gl_api.h" /* for st_gl_api_create */
  41 #include "state_tracker/drm_driver.h"
  42
  43 #include "util/u_debug.h"
  44
  45 #define MSAA_VISUAL_MAX_SAMPLES 32
  46
  47 #undef false
  48
  49 PUBLIC const char __driConfigOptions[] =
  50    DRI_CONF_BEGIN
  51       DRI_CONF_SECTION_PERFORMANCE
  52          DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  53          DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  54       DRI_CONF_SECTION_END
  55
  56       DRI_CONF_SECTION_QUALITY
  57 /*       DRI_CONF_FORCE_S3TC_ENABLE("false") */
  58          DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  59          DRI_CONF_PP_CELSHADE(0)
  60          DRI_CONF_PP_NORED(0)
  61          DRI_CONF_PP_NOGREEN(0)
  62          DRI_CONF_PP_NOBLUE(0)
  63          DRI_CONF_PP_JIMENEZMLAA(0, 0, 32)
  64          DRI_CONF_PP_JIMENEZMLAA_COLOR(0, 0, 32)
  65       DRI_CONF_SECTION_END
  66
  67       DRI_CONF_SECTION_DEBUG
  68          DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  69          DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  70       DRI_CONF_SECTION_END
  71
  72       DRI_CONF_SECTION_MISCELLANEOUS
  73          DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
  74       DRI_CONF_SECTION_END
  75    DRI_CONF_END;
  76
  77 #define false 0
  78
  79 static const uint __driNConfigOptions = 12;
  80
  81 static const __DRIconfig **
  82 dri_fill_in_modes(struct dri_screen *screen)
  83 {
  84    static const gl_format mesa_formats[3] = {
  85       MESA_FORMAT_ARGB8888,
  86       MESA_FORMAT_XRGB8888,
  87       MESA_FORMAT_RGB565,
  88    };
  89    static const enum pipe_format pipe_formats[3] = {
  90       PIPE_FORMAT_BGRA8888_UNORM,
  91       PIPE_FORMAT_BGRX8888_UNORM,
  92       PIPE_FORMAT_B5G6R5_UNORM,
  93    };
  94    gl_format format;
  95    __DRIconfig **configs = NULL;
  96    uint8_t depth_bits_array[5];
  97    uint8_t stencil_bits_array[5];
  98    unsigned depth_buffer_factor;
  99    unsigned msaa_samples_max;
 100    unsigned i;
 101    struct pipe_screen *p_screen = screen->base.screen;
 102    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
 103
 104    static const GLenum back_buffer_modes[] = {
 105       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 106    };
 107
 108    if (driQueryOptionb(&screen->optionCache, "always_have_depth_buffer")) {
 109       /* all visuals will have a depth buffer */
 110       depth_buffer_factor = 0;
 111    }
 112    else {
 113       depth_bits_array[0] = 0;
 114       stencil_bits_array[0] = 0;
 115       depth_buffer_factor = 1;
 116    }
 117
 118    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
 119       ? MSAA_VISUAL_MAX_SAMPLES : 1;
 120
 121    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 122                                             PIPE_TEXTURE_2D, 0,
 123                                             PIPE_BIND_DEPTH_STENCIL);
 124    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 125                                             PIPE_TEXTURE_2D, 0,
 126                                             PIPE_BIND_DEPTH_STENCIL);
 127    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 128                                             PIPE_TEXTURE_2D, 0,
 129                                             PIPE_BIND_DEPTH_STENCIL);
 130    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
 131                                             PIPE_TEXTURE_2D, 0,
 132                                             PIPE_BIND_DEPTH_STENCIL);
 133    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 134                                           PIPE_TEXTURE_2D, 0,
 135                                           PIPE_BIND_DEPTH_STENCIL);
 136    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 137                                           PIPE_TEXTURE_2D, 0,
 138                                           PIPE_BIND_DEPTH_STENCIL);
 139
 140    if (pf_z16) {
 141       depth_bits_array[depth_buffer_factor] = 16;
 142       stencil_bits_array[depth_buffer_factor++] = 0;
 143    }
 144    if (pf_x8z24 || pf_z24x8) {
 145       depth_bits_array[depth_buffer_factor] = 24;
 146       stencil_bits_array[depth_buffer_factor++] = 0;
 147       screen->d_depth_bits_last = pf_x8z24;
 148    }
 149    if (pf_s8z24 || pf_z24s8) {
 150       depth_bits_array[depth_buffer_factor] = 24;
 151       stencil_bits_array[depth_buffer_factor++] = 8;
 152       screen->sd_depth_bits_last = pf_s8z24;
 153    }
 154    if (pf_z32) {
 155       depth_bits_array[depth_buffer_factor] = 32;
 156       stencil_bits_array[depth_buffer_factor++] = 0;
 157    }
 158
 159    assert(Elements(mesa_formats) == Elements(pipe_formats));
 160
 161    /* Add configs. */
 162    for (format = 0; format < Elements(mesa_formats); format++) {
 163       __DRIconfig **new_configs = NULL;
 164       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
 165       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
 166
 167       for (i = 1; i <= msaa_samples_max; i++) {
 168          int samples = i > 1 ? i : 0;
 169
 170          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
 171                                            PIPE_TEXTURE_2D, samples,
 172                                            PIPE_BIND_RENDER_TARGET)) {
 173             msaa_modes[num_msaa_modes++] = samples;
 174          }
 175       }
 176
 177       if (num_msaa_modes) {
 178          /* Single-sample configs with an accumulation buffer. */
 179          new_configs = driCreateConfigs(mesa_formats[format],
 180                                         depth_bits_array, stencil_bits_array,
 181                                         depth_buffer_factor, back_buffer_modes,
 182                                         Elements(back_buffer_modes),
 183                                         msaa_modes, 1,
 184                                         GL_TRUE);
 185          configs = driConcatConfigs(configs, new_configs);
 186
 187          /* Multi-sample configs without an accumulation buffer. */
 188          if (num_msaa_modes > 1) {
 189             new_configs = driCreateConfigs(mesa_formats[format],
 190                                            depth_bits_array, stencil_bits_array,
 191                                            depth_buffer_factor, back_buffer_modes,
 192                                            Elements(back_buffer_modes),
 193                                            msaa_modes+1, num_msaa_modes-1,
 194                                            GL_FALSE);
 195             configs = driConcatConfigs(configs, new_configs);
 196          }
 197       }
 198    }
 199
 200    if (configs == NULL) {
 201       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 202       return NULL;
 203    }
 204
 205    return (const __DRIconfig **)configs;
 206 }
 207
 208 /* The Gallium way to force MSAA. */
 209 DEBUG_GET_ONCE_NUM_OPTION(msaa, "GALLIUM_MSAA", 0);
 210
 211 /* The NVIDIA way to force MSAA. The same variable is used by the NVIDIA
 212  * driver. */
 213 DEBUG_GET_ONCE_NUM_OPTION(msaa_nv, "__GL_FSAA_MODE", 0);
 214
 215 static void
 216 dri_force_msaa_visual(struct st_visual *stvis,
 217                       struct pipe_screen *screen)
 218 {
 219    int i;
 220    int samples = debug_get_option_msaa();
 221
 222    if (!samples)
 223       samples = debug_get_option_msaa_nv();
 224
 225    if (samples <= 1)
 226       return; /* nothing to do */
 227
 228    /* Choose a supported sample count greater than or equal to samples. */
 229    for (i = samples; i <= MSAA_VISUAL_MAX_SAMPLES; i++) {
 230       if (screen->is_format_supported(screen, stvis->color_format,
 231                                       PIPE_TEXTURE_2D, i,
 232                                       PIPE_BIND_RENDER_TARGET)) {
 233          stvis->samples = i;
 234          break;
 235       }
 236    }
 237 }
 238
 239 /**
 240  * Roughly the converse of dri_fill_in_modes.
 241  */
 242 void
 243 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 244                    const struct gl_config *mode)
 245 {
 246    memset(stvis, 0, sizeof(*stvis));
 247
 248    if (!mode)
 249       return;
 250
 251    if (mode->redBits == 8) {
 252       if (mode->alphaBits == 8)
 253          stvis->color_format = PIPE_FORMAT_BGRA8888_UNORM;
 254       else
 255          stvis->color_format = PIPE_FORMAT_BGRX8888_UNORM;
 256    } else {
 257       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 258    }
 259
 260    if (mode->sampleBuffers) {
 261       stvis->samples = mode->samples;
 262    }
 263    else {
 264       /* This must be done after stvis->color_format is set. */
 265       dri_force_msaa_visual(stvis, screen->base.screen);
 266    }
 267
 268    switch (mode->depthBits) {
 269    default:
 270    case 0:
 271       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 272       break;
 273    case 16:
 274       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 275       break;
 276    case 24:
 277       if (mode->stencilBits == 0) {
 278          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 279                                           PIPE_FORMAT_Z24X8_UNORM:
 280                                           PIPE_FORMAT_X8Z24_UNORM;
 281       } else {
 282          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 283                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
 284                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
 285       }
 286       break;
 287    case 32:
 288       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 289       break;
 290    }
 291
 292    stvis->accum_format = (mode->haveAccumBuffer) ?
 293       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 294
 295    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 296    stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 297    if (mode->doubleBufferMode) {
 298       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 299       stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
 300    }
 301    if (mode->stereoMode) {
 302       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 303       if (mode->doubleBufferMode)
 304          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 305    }
 306
 307    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 308       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 309    /* let the state tracker allocate the accum buffer */
 310 }
 311
 312 static boolean
 313 dri_get_egl_image(struct st_manager *smapi,
 314                   void *egl_image,
 315                   struct st_egl_image *stimg)
 316 {
 317    struct dri_screen *screen = (struct dri_screen *)smapi;
 318    __DRIimage *img = NULL;
 319
 320    if (screen->lookup_egl_image) {
 321       img = screen->lookup_egl_image(screen, egl_image);
 322    }
 323
 324    if (!img)
 325       return FALSE;
 326
 327    stimg->texture = NULL;
 328    pipe_resource_reference(&stimg->texture, img->texture);
 329    stimg->level = img->level;
 330    stimg->layer = img->layer;
 331
 332    return TRUE;
 333 }
 334
 335 static int
 336 dri_get_param(struct st_manager *smapi,
 337               enum st_manager_param param)
 338 {
 339    struct dri_screen *screen = (struct dri_screen *)smapi;
 340
 341    switch(param) {
 342    case ST_MANAGER_BROKEN_INVALIDATE:
 343       return screen->broken_invalidate;
 344    default:
 345       return 0;
 346    }
 347 }
 348
 349 static void
 350 dri_destroy_option_cache(struct dri_screen * screen)
 351 {
 352    int i;
 353
 354    if (screen->optionCache.info) {
 355       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 356          free(screen->optionCache.info[i].name);
 357          free(screen->optionCache.info[i].ranges);
 358       }
 359       free(screen->optionCache.info);
 360    }
 361
 362    free(screen->optionCache.values);
 363 }
 364
 365 void
 366 dri_destroy_screen_helper(struct dri_screen * screen)
 367 {
 368    if (screen->st_api && screen->st_api->destroy)
 369       screen->st_api->destroy(screen->st_api);
 370
 371    if (screen->base.screen)
 372       screen->base.screen->destroy(screen->base.screen);
 373
 374    dri_destroy_option_cache(screen);
 375 }
 376
 377 void
 378 dri_destroy_screen(__DRIscreen * sPriv)
 379 {
 380    struct dri_screen *screen = dri_screen(sPriv);
 381
 382    dri_destroy_screen_helper(screen);
 383
 384    free(screen);
 385    sPriv->driverPrivate = NULL;
 386    sPriv->extensions = NULL;
 387 }
 388
 389 const __DRIconfig **
 390 dri_init_screen_helper(struct dri_screen *screen,
 391                        struct pipe_screen *pscreen)
 392 {
 393    screen->base.screen = pscreen;
 394    if (!screen->base.screen) {
 395       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 396       return NULL;
 397    }
 398
 399    screen->base.get_egl_image = dri_get_egl_image;
 400    screen->base.get_param = dri_get_param;
 401
 402    screen->st_api = st_gl_api_create();
 403    if (!screen->st_api)
 404       return NULL;
 405
 406    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
 407       screen->target = PIPE_TEXTURE_2D;
 408    else
 409       screen->target = PIPE_TEXTURE_RECT;
 410
 411    driParseOptionInfo(&screen->optionCacheDefaults,
 412                       __driConfigOptions, __driNConfigOptions);
 413
 414    driParseConfigFiles(&screen->optionCache,
 415                        &screen->optionCacheDefaults,
 416                        screen->sPriv->myNum,
 417                        driver_descriptor.name);
 418
 419    return dri_fill_in_modes(screen);
 420 }
 421
 422 /* vim: set sw=3 ts=8 sts=3 expandtab: */