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 #ifndef __NOT_HAVE_DRM_H
  34 #include "vblank.h"
  35 #endif
  36 #include "xmlpool.h"
  37
  38 #include "dri_screen.h"
  39 #include "dri_context.h"
  40 #include "dri_drawable.h"
  41 #include "dri1_helper.h"
  42 #ifndef __NOT_HAVE_DRM_H
  43 #include "dri1.h"
  44 #include "dri2.h"
  45 #else
  46 #include "drisw.h"
  47 #endif
  48
  49 #include "util/u_inlines.h"
  50 #include "pipe/p_screen.h"
  51 #include "pipe/p_format.h"
  52 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
  53
  54 #include "util/u_debug.h"
  55
  56 PUBLIC const char __driConfigOptions[] =
  57    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  58    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  59    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  60    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  61 /* DRI_CONF_FORCE_S3TC_ENABLE(false) */
  62    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  63    DRI_CONF_SECTION_END DRI_CONF_END;
  64
  65 static const uint __driNConfigOptions = 3;
  66
  67 static const __DRIconfig **
  68 dri_fill_in_modes(struct dri_screen *screen,
  69                   unsigned pixel_bits)
  70 {
  71    __DRIconfig **configs = NULL;
  72    __DRIconfig **configs_r5g6b5 = NULL;
  73    __DRIconfig **configs_a8r8g8b8 = NULL;
  74    __DRIconfig **configs_x8r8g8b8 = NULL;
  75    uint8_t depth_bits_array[5];
  76    uint8_t stencil_bits_array[5];
  77    uint8_t msaa_samples_array[5];
  78    unsigned depth_buffer_factor;
  79    unsigned back_buffer_factor;
  80    unsigned msaa_samples_factor;
  81    unsigned i;
  82    struct pipe_screen *p_screen = screen->base.screen;
  83    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  84    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  85
  86    static const GLenum back_buffer_modes[] = {
  87       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  88    };
  89
  90    depth_bits_array[0] = 0;
  91    stencil_bits_array[0] = 0;
  92    depth_buffer_factor = 1;
  93
  94    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
  95                                             PIPE_TEXTURE_2D, 0,
  96                                             PIPE_BIND_DEPTH_STENCIL, 0);
  97    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  98                                             PIPE_TEXTURE_2D, 0,
  99                                             PIPE_BIND_DEPTH_STENCIL, 0);
 100    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
 101                                             PIPE_TEXTURE_2D, 0,
 102                                             PIPE_BIND_DEPTH_STENCIL, 0);
 103    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
 104                                             PIPE_TEXTURE_2D, 0,
 105                                             PIPE_BIND_DEPTH_STENCIL, 0);
 106    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 107                                                PIPE_TEXTURE_2D, 0,
 108                                                PIPE_BIND_RENDER_TARGET, 0);
 109    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 110                                                PIPE_TEXTURE_2D, 0,
 111                                                PIPE_BIND_RENDER_TARGET, 0);
 112    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 113                                              PIPE_TEXTURE_2D, 0,
 114                                              PIPE_BIND_RENDER_TARGET, 0);
 115
 116    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 117    if (dri_with_format(screen->sPriv)) {
 118       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 119                                              PIPE_TEXTURE_2D, 0,
 120                                              PIPE_BIND_DEPTH_STENCIL, 0);
 121       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 122                                              PIPE_TEXTURE_2D, 0,
 123                                              PIPE_BIND_DEPTH_STENCIL, 0);
 124    } else {
 125       pf_z16 = FALSE;
 126       pf_z32 = FALSE;
 127    }
 128
 129    if (pf_z16) {
 130       depth_bits_array[depth_buffer_factor] = 16;
 131       stencil_bits_array[depth_buffer_factor++] = 0;
 132    }
 133    if (pf_x8z24 || pf_z24x8) {
 134       depth_bits_array[depth_buffer_factor] = 24;
 135       stencil_bits_array[depth_buffer_factor++] = 0;
 136       screen->d_depth_bits_last = pf_x8z24;
 137    }
 138    if (pf_s8z24 || pf_z24s8) {
 139       depth_bits_array[depth_buffer_factor] = 24;
 140       stencil_bits_array[depth_buffer_factor++] = 8;
 141       screen->sd_depth_bits_last = pf_s8z24;
 142    }
 143    if (pf_z32) {
 144       depth_bits_array[depth_buffer_factor] = 32;
 145       stencil_bits_array[depth_buffer_factor++] = 0;
 146    }
 147
 148    msaa_samples_array[0] = 0;
 149    back_buffer_factor = 3;
 150
 151    /* also test color for msaa 2/4/6/8 - just assume it'll work for all depth buffers */
 152    if (pf_r5g6b5) {
 153       msaa_samples_factor = 1;
 154       for (i = 1; i < 5; i++) {
 155          if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 156                                                    PIPE_TEXTURE_2D, i*2,
 157                                                    PIPE_BIND_RENDER_TARGET, 0)) {
 158             msaa_samples_array[msaa_samples_factor] = i * 2;
 159             msaa_samples_factor++;
 160          }
 161       }
 162
 163       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 164                                         depth_bits_array, stencil_bits_array,
 165                                         depth_buffer_factor, back_buffer_modes,
 166                                         back_buffer_factor,
 167                                         msaa_samples_array, msaa_samples_factor,
 168                                         GL_TRUE);
 169    }
 170
 171    if (pf_a8r8g8b8) {
 172       msaa_samples_factor = 1;
 173       for (i = 1; i < 5; i++) {
 174          if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 175                                                    PIPE_TEXTURE_2D, i*2,
 176                                                    PIPE_BIND_RENDER_TARGET, 0)) {
 177             msaa_samples_array[msaa_samples_factor] = i * 2;
 178             msaa_samples_factor++;
 179          }
 180       }
 181
 182       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 183                                           depth_bits_array,
 184                                           stencil_bits_array,
 185                                           depth_buffer_factor,
 186                                           back_buffer_modes,
 187                                           back_buffer_factor,
 188                                           msaa_samples_array,
 189                                           msaa_samples_factor,
 190                                           GL_TRUE);
 191    }
 192
 193    if (pf_x8r8g8b8) {
 194       msaa_samples_factor = 1;
 195       for (i = 1; i < 5; i++) {
 196          if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 197                                                    PIPE_TEXTURE_2D, i*2,
 198                                                    PIPE_BIND_RENDER_TARGET, 0)) {
 199             msaa_samples_array[msaa_samples_factor] = i * 2;
 200             msaa_samples_factor++;
 201          }
 202       }
 203
 204       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 205                                           depth_bits_array,
 206                                           stencil_bits_array,
 207                                           depth_buffer_factor,
 208                                           back_buffer_modes,
 209                                           back_buffer_factor,
 210                                           msaa_samples_array,
 211                                           msaa_samples_factor,
 212                                           GL_TRUE);
 213    }
 214
 215    if (pixel_bits == 16) {
 216       configs = configs_r5g6b5;
 217       if (configs_a8r8g8b8)
 218          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 219       if (configs_x8r8g8b8)
 220          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 221    } else {
 222       configs = configs_a8r8g8b8;
 223       if (configs_x8r8g8b8)
 224          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 225       if (configs_r5g6b5)
 226          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 227    }
 228
 229    if (configs == NULL) {
 230       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 231       return NULL;
 232    }
 233
 234    return (const __DRIconfig **)configs;
 235 }
 236
 237 /**
 238  * Roughly the converse of dri_fill_in_modes.
 239  */
 240 void
 241 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 242                    const __GLcontextModes *mode)
 243 {
 244    memset(stvis, 0, sizeof(*stvis));
 245
 246    stvis->samples = mode->samples;
 247    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 248
 249    if (mode->redBits == 8) {
 250       if (mode->alphaBits == 8)
 251          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 252       else
 253          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 254    } else {
 255       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 256    }
 257
 258    switch (mode->depthBits) {
 259    default:
 260    case 0:
 261       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 262       break;
 263    case 16:
 264       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 265       break;
 266    case 24:
 267       if (mode->stencilBits == 0) {
 268          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 269                                           PIPE_FORMAT_Z24X8_UNORM:
 270                                           PIPE_FORMAT_X8Z24_UNORM;
 271       } else {
 272          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 273                                           PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 274                                           PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 275       }
 276       break;
 277    case 32:
 278       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 279       break;
 280    }
 281
 282    stvis->accum_format = (mode->haveAccumBuffer) ?
 283       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 284
 285    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 286    if (mode->doubleBufferMode)
 287       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 288    if (mode->stereoMode) {
 289       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 290       if (mode->doubleBufferMode)
 291          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 292    }
 293
 294    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 295       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 296    /* let the state tracker allocate the accum buffer */
 297 }
 298
 299 #ifndef __NOT_HAVE_DRM_H
 300
 301 /**
 302  * Get information about previous buffer swaps.
 303  */
 304 static int
 305 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 306 {
 307    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 308       return -1;
 309    else
 310       return 0;
 311 }
 312
 313 #endif
 314
 315 static boolean
 316 dri_get_egl_image(struct st_manager *smapi,
 317                              struct st_egl_image *stimg)
 318 {
 319    struct dri_context *ctx =
 320       (struct dri_context *)stimg->stctxi->st_manager_private;
 321    struct dri_screen *screen = dri_screen(ctx->sPriv);
 322    __DRIimage *img = NULL;
 323
 324    if (screen->lookup_egl_image) {
 325       img = screen->lookup_egl_image(ctx, stimg->egl_image);
 326    }
 327
 328    if (!img)
 329       return FALSE;
 330
 331    stimg->texture = NULL;
 332    pipe_resource_reference(&stimg->texture, img->texture);
 333    stimg->face = img->face;
 334    stimg->level = img->level;
 335    stimg->zslice = img->zslice;
 336
 337    return TRUE;
 338 }
 339
 340 static int
 341 dri_get_param(struct st_manager *smapi,
 342               enum st_manager_param param)
 343 {
 344    return 0;
 345 }
 346
 347 static void
 348 dri_destroy_option_cache(struct dri_screen * screen)
 349 {
 350    int i;
 351
 352    if (screen->optionCache.info) {
 353       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 354          FREE(screen->optionCache.info[i].name);
 355          FREE(screen->optionCache.info[i].ranges);
 356       }
 357       FREE(screen->optionCache.info);
 358    }
 359
 360    FREE(screen->optionCache.values);
 361 }
 362
 363 void
 364 dri_destroy_screen_helper(struct dri_screen * screen)
 365 {
 366    dri1_destroy_pipe_context(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 static 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->private = 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                        unsigned pixel_bits)
 393 {
 394    screen->base.screen = pscreen;
 395    if (!screen->base.screen) {
 396       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 397       return NULL;
 398    }
 399
 400    screen->base.get_egl_image = dri_get_egl_image;
 401    screen->base.get_param = dri_get_param;
 402    screen->st_api = st_gl_api_create();
 403
 404    if (!screen->st_api)
 405       return NULL;
 406
 407    driParseOptionInfo(&screen->optionCache,
 408                       __driConfigOptions, __driNConfigOptions);
 409
 410    return dri_fill_in_modes(screen, pixel_bits);
 411 }
 412
 413 /**
 414  * DRI driver virtual function table.
 415  *
 416  * DRI versions differ in their implementation of init_screen and swap_buffers.
 417  */
 418 const struct __DriverAPIRec driDriverAPI = {
 419    .DestroyScreen = dri_destroy_screen,
 420    .CreateContext = dri_create_context,
 421    .DestroyContext = dri_destroy_context,
 422    .CreateBuffer = dri_create_buffer,
 423    .DestroyBuffer = dri_destroy_buffer,
 424    .MakeCurrent = dri_make_current,
 425    .UnbindContext = dri_unbind_context,
 426
 427 #ifndef __NOT_HAVE_DRM_H
 428
 429    .GetSwapInfo = dri_get_swap_info,
 430    .GetDrawableMSC = driDrawableGetMSC32,
 431    .WaitForMSC = driWaitForMSC32,
 432    .InitScreen2 = dri2_init_screen,
 433
 434    .InitScreen = dri1_init_screen,
 435    .SwapBuffers = dri1_swap_buffers,
 436    .CopySubBuffer = dri1_copy_sub_buffer,
 437
 438 #else
 439
 440    .InitScreen = drisw_init_screen,
 441    .SwapBuffers = drisw_swap_buffers,
 442
 443 #endif
 444
 445 };
 446
 447 /* vim: set sw=3 ts=8 sts=3 expandtab: */