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 "vblank.h"
  34 #include "xmlpool.h"
  35
  36 #include "dri_screen.h"
  37 #include "dri_context.h"
  38 #include "dri_drawable.h"
  39
  40 #include "pipe/p_screen.h"
  41 #include "pipe/p_format.h"
  42 #include "state_tracker/drm_api.h"
  43 #include "state_tracker/dri1_api.h"
  44
  45 #include "util/u_debug.h"
  46
  47 PUBLIC const char __driConfigOptions[] =
  48    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  49    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  50    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  51    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  52     /*DRI_CONF_FORCE_S3TC_ENABLE(false) */
  53    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  54    DRI_CONF_SECTION_END DRI_CONF_END;
  55
  56    const uint __driNConfigOptions = 3;
  57
  58 static const __DRItexBufferExtension dri2TexBufferExtension = {
  59     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
  60    dri2_set_tex_buffer,
  61    dri2_set_tex_buffer2,
  62 };
  63
  64 static void
  65 dri2_flush_drawable(__DRIdrawable *draw)
  66 {
  67 }
  68
  69 static const __DRI2flushExtension dri2FlushExtension = {
  70     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
  71     dri2_flush_drawable,
  72     dri2InvalidateDrawable,
  73 };
  74
  75    static const __DRIextension *dri_screen_extensions[] = {
  76       &driReadDrawableExtension,
  77       &driCopySubBufferExtension.base,
  78       &driSwapControlExtension.base,
  79       &driFrameTrackingExtension.base,
  80       &driMediaStreamCounterExtension.base,
  81       &dri2TexBufferExtension.base,
  82       &dri2FlushExtension.base,
  83       NULL
  84    };
  85
  86 struct dri1_api *__dri1_api_hooks = NULL;
  87
  88 static const __DRIconfig **
  89 dri_fill_in_modes(struct dri_screen *screen,
  90                   unsigned pixel_bits)
  91 {
  92    __DRIconfig **configs = NULL;
  93    __DRIconfig **configs_r5g6b5 = NULL;
  94    __DRIconfig **configs_a8r8g8b8 = NULL;
  95    __DRIconfig **configs_x8r8g8b8 = NULL;
  96    unsigned num_modes;
  97    uint8_t depth_bits_array[5];
  98    uint8_t stencil_bits_array[5];
  99    uint8_t msaa_samples_array[2];
 100    unsigned depth_buffer_factor;
 101    unsigned back_buffer_factor;
 102    unsigned msaa_samples_factor;
 103    struct pipe_screen *p_screen = screen->pipe_screen;
 104    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
 105    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
 106
 107    static const GLenum back_buffer_modes[] = {
 108       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 109    };
 110
 111    depth_bits_array[0] = 0;
 112    stencil_bits_array[0] = 0;
 113    depth_buffer_factor = 1;
 114
 115    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 116                                             PIPE_TEXTURE_2D,
 117                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 118    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 119                                             PIPE_TEXTURE_2D,
 120                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 121    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 122                                             PIPE_TEXTURE_2D,
 123                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 124    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 125                                             PIPE_TEXTURE_2D,
 126                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 127    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 128                                                PIPE_TEXTURE_2D,
 129                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 130    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 131                                                PIPE_TEXTURE_2D,
 132                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 133    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 134                                              PIPE_TEXTURE_2D,
 135                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 136
 137    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 138    if (screen->sPriv->dri2.loader &&
 139        (screen->sPriv->dri2.loader->base.version > 2) &&
 140        (screen->sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 141       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 142                                              PIPE_TEXTURE_2D,
 143                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 144       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 145                                              PIPE_TEXTURE_2D,
 146                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 147    } else {
 148       pf_z16 = FALSE;
 149       pf_z32 = FALSE;
 150    }
 151
 152    if (pf_z16) {
 153       depth_bits_array[depth_buffer_factor] = 16;
 154       stencil_bits_array[depth_buffer_factor++] = 0;
 155    }
 156    if (pf_x8z24 || pf_z24x8) {
 157       depth_bits_array[depth_buffer_factor] = 24;
 158       stencil_bits_array[depth_buffer_factor++] = 0;
 159       screen->d_depth_bits_last = pf_x8z24;
 160    }
 161    if (pf_s8z24 || pf_z24s8) {
 162       depth_bits_array[depth_buffer_factor] = 24;
 163       stencil_bits_array[depth_buffer_factor++] = 8;
 164       screen->sd_depth_bits_last = pf_s8z24;
 165    }
 166    if (pf_z32) {
 167       depth_bits_array[depth_buffer_factor] = 32;
 168       stencil_bits_array[depth_buffer_factor++] = 0;
 169    }
 170
 171    msaa_samples_array[0] = 0;
 172    msaa_samples_array[1] = 4;
 173    back_buffer_factor = 3;
 174    msaa_samples_factor = 2;
 175
 176    num_modes =
 177       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 178
 179    if (pf_r5g6b5)
 180       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 181                                         depth_bits_array, stencil_bits_array,
 182                                         depth_buffer_factor, back_buffer_modes,
 183                                         back_buffer_factor,
 184                                         msaa_samples_array, msaa_samples_factor,
 185                                         GL_TRUE);
 186
 187    if (pf_a8r8g8b8)
 188       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 189                                           depth_bits_array,
 190                                           stencil_bits_array,
 191                                           depth_buffer_factor,
 192                                           back_buffer_modes,
 193                                           back_buffer_factor,
 194                                           msaa_samples_array,
 195                                           msaa_samples_factor,
 196                                           GL_TRUE);
 197
 198    if (pf_x8r8g8b8)
 199       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 200                                           depth_bits_array,
 201                                           stencil_bits_array,
 202                                           depth_buffer_factor,
 203                                           back_buffer_modes,
 204                                           back_buffer_factor,
 205                                           msaa_samples_array,
 206                                           msaa_samples_factor,
 207                                           GL_TRUE);
 208
 209    if (pixel_bits == 16) {
 210       configs = configs_r5g6b5;
 211       if (configs_a8r8g8b8)
 212          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 213       if (configs_x8r8g8b8)
 214          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 215    } else {
 216       configs = configs_a8r8g8b8;
 217       if (configs_x8r8g8b8)
 218          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 219       if (configs_r5g6b5)
 220          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 221    }
 222
 223    if (configs == NULL) {
 224       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 225       return NULL;
 226    }
 227
 228    return (const __DRIconfig **)configs;
 229 }
 230
 231 /**
 232  * Get information about previous buffer swaps.
 233  */
 234 static int
 235 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 236 {
 237    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 238       return -1;
 239    else
 240       return 0;
 241 }
 242
 243 static INLINE void
 244 dri_copy_version(struct dri1_api_version *dst,
 245                  const struct __DRIversionRec *src)
 246 {
 247    dst->major = src->major;
 248    dst->minor = src->minor;
 249    dst->patch_level = src->patch;
 250 }
 251
 252 static const __DRIconfig **
 253 dri_init_screen(__DRIscreen * sPriv)
 254 {
 255    struct dri_screen *screen;
 256    const __DRIconfig **configs;
 257    struct dri1_create_screen_arg arg;
 258
 259    screen = CALLOC_STRUCT(dri_screen);
 260    if (!screen)
 261       return NULL;
 262
 263    screen->api = drm_api_create();
 264    screen->sPriv = sPriv;
 265    screen->fd = sPriv->fd;
 266    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 267
 268    sPriv->private = (void *)screen;
 269    sPriv->extensions = dri_screen_extensions;
 270
 271    arg.base.mode = DRM_CREATE_DRI1;
 272    arg.lf = &dri1_lf;
 273    arg.ddx_info = sPriv->pDevPriv;
 274    arg.ddx_info_size = sPriv->devPrivSize;
 275    arg.sarea = sPriv->pSAREA;
 276    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 277    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 278    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 279    arg.api = NULL;
 280
 281    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 282
 283    if (!screen->pipe_screen || !arg.api) {
 284       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 285       goto out_no_screen;
 286    }
 287
 288    __dri1_api_hooks = arg.api;
 289
 290    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 291    driParseOptionInfo(&screen->optionCache,
 292                       __driConfigOptions, __driNConfigOptions);
 293
 294    /**
 295     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 296     * want to support other color bit depths than the server is currently
 297     * using.
 298     */
 299
 300    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 301    if (!configs)
 302       goto out_no_configs;
 303
 304    return configs;
 305  out_no_configs:
 306    screen->pipe_screen->destroy(screen->pipe_screen);
 307  out_no_screen:
 308    FREE(screen);
 309    return NULL;
 310 }
 311
 312 /**
 313  * This is the driver specific part of the createNewScreen entry point.
 314  *
 315  * Returns the __GLcontextModes supported by this driver.
 316  */
 317 static const __DRIconfig **
 318 dri_init_screen2(__DRIscreen * sPriv)
 319 {
 320    struct dri_screen *screen;
 321    struct drm_create_screen_arg arg;
 322    const __DRIdri2LoaderExtension *dri2_ext =
 323      sPriv->dri2.loader;
 324
 325    screen = CALLOC_STRUCT(dri_screen);
 326    if (!screen)
 327       goto fail;
 328
 329    screen->api = drm_api_create();
 330    screen->sPriv = sPriv;
 331    screen->fd = sPriv->fd;
 332    sPriv->private = (void *)screen;
 333    sPriv->extensions = dri_screen_extensions;
 334    arg.mode = DRM_CREATE_NORMAL;
 335
 336    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 337    if (!screen->pipe_screen) {
 338       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 339       goto fail;
 340    }
 341
 342    /* We need to hook in here */
 343    screen->pipe_screen->update_buffer = dri_update_buffer;
 344    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 345
 346    driParseOptionInfo(&screen->optionCache,
 347                       __driConfigOptions, __driNConfigOptions);
 348
 349    screen->auto_fake_front = dri2_ext->base.version >= 3 &&
 350       dri2_ext->getBuffersWithFormat != NULL;
 351
 352    return dri_fill_in_modes(screen, 32);
 353  fail:
 354    return NULL;
 355 }
 356
 357 static void
 358 dri_destroy_screen(__DRIscreen * sPriv)
 359 {
 360    struct dri_screen *screen = dri_screen(sPriv);
 361    int i;
 362
 363    screen->pipe_screen->destroy(screen->pipe_screen);
 364
 365    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 366       FREE(screen->optionCache.info[i].name);
 367       FREE(screen->optionCache.info[i].ranges);
 368    }
 369
 370    FREE(screen->optionCache.info);
 371    FREE(screen->optionCache.values);
 372
 373    FREE(screen);
 374    sPriv->private = NULL;
 375 }
 376
 377 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 378    .InitScreen = dri_init_screen,
 379    .DestroyScreen = dri_destroy_screen,
 380    .CreateContext = dri_create_context,
 381    .DestroyContext = dri_destroy_context,
 382    .CreateBuffer = dri_create_buffer,
 383    .DestroyBuffer = dri_destroy_buffer,
 384    .SwapBuffers = dri_swap_buffers,
 385    .MakeCurrent = dri_make_current,
 386    .UnbindContext = dri_unbind_context,
 387    .GetSwapInfo = dri_get_swap_info,
 388    .GetDrawableMSC = driDrawableGetMSC32,
 389    .WaitForMSC = driWaitForMSC32,
 390    .CopySubBuffer = dri_copy_sub_buffer,
 391    .InitScreen = dri_init_screen,
 392    .InitScreen2 = dri_init_screen2,
 393 };
 394
 395 /* This is the table of extensions that the loader will dlsym() for. */
 396 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 397     &driCoreExtension.base,
 398     &driLegacyExtension.base,
 399     &driDRI2Extension.base,
 400     NULL
 401 };
 402
 403 /* vim: set sw=3 ts=8 sts=3 expandtab: */