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 const __DRIextension *dri_screen_extensions[] = {
  65       &driReadDrawableExtension,
  66       &driCopySubBufferExtension.base,
  67       &driSwapControlExtension.base,
  68       &driFrameTrackingExtension.base,
  69       &driMediaStreamCounterExtension.base,
  70       &dri2TexBufferExtension.base,
  71       NULL
  72    };
  73
  74 struct dri1_api *__dri1_api_hooks = NULL;
  75
  76 static const __DRIconfig **
  77 dri_fill_in_modes(struct dri_screen *screen,
  78                   unsigned pixel_bits)
  79 {
  80    __DRIconfig **configs = NULL;
  81    unsigned num_modes;
  82    uint8_t depth_bits_array[5];
  83    uint8_t stencil_bits_array[5];
  84    uint8_t msaa_samples_array[2];
  85    unsigned depth_buffer_factor;
  86    unsigned back_buffer_factor;
  87    unsigned msaa_samples_factor;
  88    struct pipe_screen *p_screen = screen->pipe_screen;
  89    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  90    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  91
  92    static const GLenum back_buffer_modes[] = {
  93       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  94    };
  95
  96    depth_bits_array[0] = 0;
  97    stencil_bits_array[0] = 0;
  98    depth_buffer_factor = 1;
  99
 100    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 101                                             PIPE_TEXTURE_2D,
 102                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 103    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 104                                             PIPE_TEXTURE_2D,
 105                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 106    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 107                                             PIPE_TEXTURE_2D,
 108                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 109    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 110                                             PIPE_TEXTURE_2D,
 111                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 112    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_A8R8G8B8_UNORM,
 113                                                PIPE_TEXTURE_2D,
 114                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 115    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8R8G8B8_UNORM,
 116                                                PIPE_TEXTURE_2D,
 117                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 118
 119    /* we support buffers with different depths only if we can tell the driver
 120     * the actual depth of each of them. */
 121    if (screen->sPriv->dri2.loader
 122        && (screen->sPriv->dri2.loader->base.version > 2)
 123        && (screen->sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
 124       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 125                                              PIPE_TEXTURE_2D,
 126                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 127       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 128                                              PIPE_TEXTURE_2D,
 129                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 130       pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_R5G6B5_UNORM,
 131                                                 PIPE_TEXTURE_2D,
 132                                                 PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 133    } else {
 134       pf_z16 = FALSE;
 135       pf_z32 = FALSE;
 136       pf_r5g6b5 = FALSE;
 137    }
 138
 139    if (pf_z16) {
 140       depth_bits_array[depth_buffer_factor] = 16;
 141       stencil_bits_array[depth_buffer_factor++] = 0;
 142    }
 143    if (pf_x8z24 || pf_z24x8) {
 144       depth_bits_array[depth_buffer_factor] = 24;
 145       stencil_bits_array[depth_buffer_factor++] = 0;
 146       screen->d_depth_bits_last = pf_x8z24;
 147    }
 148    if (pf_s8z24 || pf_z24s8) {
 149       depth_bits_array[depth_buffer_factor] = 24;
 150       stencil_bits_array[depth_buffer_factor++] = 8;
 151       screen->sd_depth_bits_last = pf_s8z24;
 152    }
 153    if (pf_z32) {
 154       depth_bits_array[depth_buffer_factor] = 32;
 155       stencil_bits_array[depth_buffer_factor++] = 0;
 156    }
 157
 158    msaa_samples_array[0] = 0;
 159    msaa_samples_array[1] = 4;
 160    back_buffer_factor = 3;
 161    msaa_samples_factor = 2;
 162
 163    num_modes =
 164       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 165
 166    if (pixel_bits == 16 && pf_r5g6b5) {
 167       configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 168                                  depth_bits_array, stencil_bits_array,
 169                                  depth_buffer_factor, back_buffer_modes,
 170                                  back_buffer_factor,
 171                                  msaa_samples_array, msaa_samples_factor,
 172                                  GL_TRUE);
 173    } else {
 174       __DRIconfig **configs_a8r8g8b8 = NULL;
 175       __DRIconfig **configs_x8r8g8b8 = NULL;
 176
 177       if (pf_a8r8g8b8)
 178          configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 179                                              depth_bits_array,
 180                                              stencil_bits_array,
 181                                              depth_buffer_factor,
 182                                              back_buffer_modes,
 183                                              back_buffer_factor,
 184                                              msaa_samples_array,
 185                                              msaa_samples_factor,
 186                                              GL_TRUE);
 187       if (pf_x8r8g8b8)
 188          configs_x8r8g8b8 = driCreateConfigs(GL_BGR, 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 (configs_a8r8g8b8 && configs_x8r8g8b8)
 199          configs = driConcatConfigs(configs_x8r8g8b8, configs_a8r8g8b8);
 200       else if (configs_a8r8g8b8)
 201          configs = configs_a8r8g8b8;
 202       else if (configs_x8r8g8b8)
 203          configs = configs_x8r8g8b8;
 204       else
 205          configs = NULL;
 206    }
 207
 208    if (configs == NULL) {
 209       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 210       return NULL;
 211    }
 212
 213    return (const __DRIconfig **)configs;
 214 }
 215
 216 /**
 217  * Get information about previous buffer swaps.
 218  */
 219 static int
 220 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 221 {
 222    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 223       return -1;
 224    else
 225       return 0;
 226 }
 227
 228 static INLINE void
 229 dri_copy_version(struct dri1_api_version *dst,
 230                  const struct __DRIversionRec *src)
 231 {
 232    dst->major = src->major;
 233    dst->minor = src->minor;
 234    dst->patch_level = src->patch;
 235 }
 236
 237 static const __DRIconfig **
 238 dri_init_screen(__DRIscreen * sPriv)
 239 {
 240    struct dri_screen *screen;
 241    const __DRIconfig **configs;
 242    struct dri1_create_screen_arg arg;
 243
 244    screen = CALLOC_STRUCT(dri_screen);
 245    if (!screen)
 246       return NULL;
 247
 248    screen->api = drm_api_create();
 249    screen->sPriv = sPriv;
 250    screen->fd = sPriv->fd;
 251    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 252
 253    sPriv->private = (void *)screen;
 254    sPriv->extensions = dri_screen_extensions;
 255
 256    arg.base.mode = DRM_CREATE_DRI1;
 257    arg.lf = &dri1_lf;
 258    arg.ddx_info = sPriv->pDevPriv;
 259    arg.ddx_info_size = sPriv->devPrivSize;
 260    arg.sarea = sPriv->pSAREA;
 261    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 262    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 263    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 264    arg.api = NULL;
 265
 266    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 267
 268    if (!screen->pipe_screen || !arg.api) {
 269       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 270       goto out_no_screen;
 271    }
 272
 273    __dri1_api_hooks = arg.api;
 274
 275    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 276    driParseOptionInfo(&screen->optionCache,
 277                       __driConfigOptions, __driNConfigOptions);
 278
 279    /**
 280     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 281     * want to support other color bit depths than the server is currently
 282     * using.
 283     */
 284
 285    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 286    if (!configs)
 287       goto out_no_configs;
 288
 289    return configs;
 290  out_no_configs:
 291    screen->pipe_screen->destroy(screen->pipe_screen);
 292  out_no_screen:
 293    FREE(screen);
 294    return NULL;
 295 }
 296
 297 /**
 298  * This is the driver specific part of the createNewScreen entry point.
 299  *
 300  * Returns the __GLcontextModes supported by this driver.
 301  */
 302 static const __DRIconfig **
 303 dri_init_screen2(__DRIscreen * sPriv)
 304 {
 305    struct dri_screen *screen;
 306    struct drm_create_screen_arg arg;
 307    const __DRIdri2LoaderExtension *dri2_ext =
 308      sPriv->dri2.loader;
 309
 310    screen = CALLOC_STRUCT(dri_screen);
 311    if (!screen)
 312       goto fail;
 313
 314    screen->api = drm_api_create();
 315    screen->sPriv = sPriv;
 316    screen->fd = sPriv->fd;
 317    sPriv->private = (void *)screen;
 318    sPriv->extensions = dri_screen_extensions;
 319    arg.mode = DRM_CREATE_NORMAL;
 320
 321    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 322    if (!screen->pipe_screen) {
 323       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 324       goto fail;
 325    }
 326
 327    /* We need to hook in here */
 328    screen->pipe_screen->update_buffer = dri_update_buffer;
 329    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 330
 331    driParseOptionInfo(&screen->optionCache,
 332                       __driConfigOptions, __driNConfigOptions);
 333
 334    screen->auto_fake_front = dri2_ext->base.version >= 3 &&
 335       dri2_ext->getBuffersWithFormat != NULL;
 336
 337    return dri_fill_in_modes(screen, 32);
 338  fail:
 339    return NULL;
 340 }
 341
 342 static void
 343 dri_destroy_screen(__DRIscreen * sPriv)
 344 {
 345    struct dri_screen *screen = dri_screen(sPriv);
 346    int i;
 347
 348    screen->pipe_screen->destroy(screen->pipe_screen);
 349
 350    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 351       FREE(screen->optionCache.info[i].name);
 352       FREE(screen->optionCache.info[i].ranges);
 353    }
 354
 355    FREE(screen->optionCache.info);
 356    FREE(screen->optionCache.values);
 357
 358    FREE(screen);
 359    sPriv->private = NULL;
 360 }
 361
 362 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 363    .InitScreen = dri_init_screen,
 364    .DestroyScreen = dri_destroy_screen,
 365    .CreateContext = dri_create_context,
 366    .DestroyContext = dri_destroy_context,
 367    .CreateBuffer = dri_create_buffer,
 368    .DestroyBuffer = dri_destroy_buffer,
 369    .SwapBuffers = dri_swap_buffers,
 370    .MakeCurrent = dri_make_current,
 371    .UnbindContext = dri_unbind_context,
 372    .GetSwapInfo = dri_get_swap_info,
 373    .GetDrawableMSC = driDrawableGetMSC32,
 374    .WaitForMSC = driWaitForMSC32,
 375    .CopySubBuffer = dri_copy_sub_buffer,
 376    .InitScreen = dri_init_screen,
 377    .InitScreen2 = dri_init_screen2,
 378 };
 379
 380 /* This is the table of extensions that the loader will dlsym() for. */
 381 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 382     &driCoreExtension.base,
 383     &driLegacyExtension.base,
 384     &driDRI2Extension.base,
 385     NULL
 386 };
 387
 388 /* vim: set sw=3 ts=8 sts=3 expandtab: */