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 PUBLIC const char __driConfigOptions[] =
  46    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  47    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  48    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  49    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  50     /*DRI_CONF_FORCE_S3TC_ENABLE(false) */
  51    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  52    DRI_CONF_SECTION_END DRI_CONF_END;
  53
  54    const uint __driNConfigOptions = 3;
  55
  56 static const __DRItexBufferExtension dri2TexBufferExtension = {
  57     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
  58    dri2_set_tex_buffer,
  59    dri2_set_tex_buffer2,
  60 };
  61
  62    static const __DRIextension *dri_screen_extensions[] = {
  63       &driReadDrawableExtension,
  64       &driCopySubBufferExtension.base,
  65       &driSwapControlExtension.base,
  66       &driFrameTrackingExtension.base,
  67       &driMediaStreamCounterExtension.base,
  68       &dri2TexBufferExtension.base,
  69       NULL
  70    };
  71
  72 struct dri1_api *__dri1_api_hooks = NULL;
  73
  74 static const __DRIconfig **
  75 dri_fill_in_modes(struct dri_screen *screen,
  76                   unsigned pixel_bits)
  77 {
  78    __DRIconfig **configs = NULL;
  79    unsigned num_modes;
  80    uint8_t depth_bits_array[5];
  81    uint8_t stencil_bits_array[5];
  82    uint8_t msaa_samples_array[2];
  83    unsigned depth_buffer_factor;
  84    unsigned back_buffer_factor;
  85    unsigned msaa_samples_factor;
  86    struct pipe_screen *p_screen = screen->pipe_screen;
  87    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  88    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  89
  90    static const GLenum back_buffer_modes[] = {
  91       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  92    };
  93
  94    depth_bits_array[0] = 0;
  95    stencil_bits_array[0] = 0;
  96    depth_buffer_factor = 1;
  97
  98    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
  99                                           PIPE_TEXTURE_2D,
 100                                           PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 101    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 102                                           PIPE_TEXTURE_2D,
 103                                           PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 104    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 105                                             PIPE_TEXTURE_2D,
 106                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 107    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 108                                             PIPE_TEXTURE_2D,
 109                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 110    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 111                                             PIPE_TEXTURE_2D,
 112                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 113    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 114                                             PIPE_TEXTURE_2D,
 115                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 116    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_R5G6B5_UNORM,
 117                                              PIPE_TEXTURE_2D,
 118                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 119    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_A8R8G8B8_UNORM,
 120                                                PIPE_TEXTURE_2D,
 121                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 122    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8R8G8B8_UNORM,
 123                                                PIPE_TEXTURE_2D,
 124                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 125
 126    if (pf_z16) {
 127       depth_bits_array[depth_buffer_factor] = 16;
 128       stencil_bits_array[depth_buffer_factor++] = 0;
 129    }
 130    if (pf_x8z24 || pf_z24x8) {
 131       depth_bits_array[depth_buffer_factor] = 24;
 132       stencil_bits_array[depth_buffer_factor++] = 0;
 133       screen->d_depth_bits_last = pf_x8z24;
 134    }
 135    if (pf_s8z24 || pf_z24s8) {
 136       depth_bits_array[depth_buffer_factor] = 24;
 137       stencil_bits_array[depth_buffer_factor++] = 8;
 138       screen->sd_depth_bits_last = pf_s8z24;
 139    }
 140    if (pf_z32) {
 141       depth_bits_array[depth_buffer_factor] = 32;
 142       stencil_bits_array[depth_buffer_factor++] = 0;
 143    }
 144
 145    msaa_samples_array[0] = 0;
 146    msaa_samples_array[1] = 4;
 147    back_buffer_factor = 3;
 148    msaa_samples_factor = 2;
 149
 150    num_modes =
 151       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 152
 153    if (pixel_bits == 16 && pf_r5g6b5) {
 154       configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 155                                  depth_bits_array, stencil_bits_array,
 156                                  depth_buffer_factor, back_buffer_modes,
 157                                  back_buffer_factor,
 158                                  msaa_samples_array, msaa_samples_factor);
 159    } else {
 160       __DRIconfig **configs_a8r8g8b8 = NULL;
 161       __DRIconfig **configs_x8r8g8b8 = NULL;
 162
 163       if (pf_a8r8g8b8)
 164          configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 165                                              depth_bits_array,
 166                                              stencil_bits_array,
 167                                              depth_buffer_factor,
 168                                              back_buffer_modes,
 169                                              back_buffer_factor,
 170                                              msaa_samples_array,
 171                                              msaa_samples_factor);
 172       if (pf_x8r8g8b8)
 173          configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 174                                              depth_bits_array,
 175                                              stencil_bits_array,
 176                                              depth_buffer_factor,
 177                                              back_buffer_modes,
 178                                              back_buffer_factor,
 179                                              msaa_samples_array,
 180                                              msaa_samples_factor);
 181
 182       if (configs_a8r8g8b8 && configs_x8r8g8b8)
 183          configs = driConcatConfigs(configs_x8r8g8b8, configs_a8r8g8b8);
 184       else if (configs_a8r8g8b8)
 185          configs = configs_a8r8g8b8;
 186       else if (configs_x8r8g8b8)
 187          configs = configs_x8r8g8b8;
 188       else
 189          configs = NULL;
 190    }
 191
 192    if (configs == NULL) {
 193       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 194       return NULL;
 195    }
 196
 197    return (const const __DRIconfig **)configs;
 198 }
 199
 200 /**
 201  * Get information about previous buffer swaps.
 202  */
 203 static int
 204 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 205 {
 206    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 207       return -1;
 208    else
 209       return 0;
 210 }
 211
 212 static INLINE void
 213 dri_copy_version(struct dri1_api_version *dst,
 214                  const struct __DRIversionRec *src)
 215 {
 216    dst->major = src->major;
 217    dst->minor = src->minor;
 218    dst->patch_level = src->patch;
 219 }
 220
 221 static const __DRIconfig **
 222 dri_init_screen(__DRIscreen * sPriv)
 223 {
 224    struct dri_screen *screen;
 225    const __DRIconfig **configs;
 226    struct dri1_create_screen_arg arg;
 227
 228    screen = CALLOC_STRUCT(dri_screen);
 229    if (!screen)
 230       return NULL;
 231
 232    screen->api = drm_api_create();
 233    screen->sPriv = sPriv;
 234    screen->fd = sPriv->fd;
 235    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 236
 237    sPriv->private = (void *)screen;
 238    sPriv->extensions = dri_screen_extensions;
 239
 240    arg.base.mode = DRM_CREATE_DRI1;
 241    arg.lf = &dri1_lf;
 242    arg.ddx_info = sPriv->pDevPriv;
 243    arg.ddx_info_size = sPriv->devPrivSize;
 244    arg.sarea = sPriv->pSAREA;
 245    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 246    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 247    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 248    arg.api = NULL;
 249
 250    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 251
 252    if (!screen->pipe_screen || !arg.api) {
 253       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 254       goto out_no_screen;
 255    }
 256
 257    __dri1_api_hooks = arg.api;
 258
 259    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 260    driParseOptionInfo(&screen->optionCache,
 261                       __driConfigOptions, __driNConfigOptions);
 262
 263    /**
 264     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 265     * want to support other color bit depths than the server is currently
 266     * using.
 267     */
 268
 269    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 270    if (!configs)
 271       goto out_no_configs;
 272
 273    return configs;
 274  out_no_configs:
 275    screen->pipe_screen->destroy(screen->pipe_screen);
 276  out_no_screen:
 277    FREE(screen);
 278    return NULL;
 279 }
 280
 281 /**
 282  * This is the driver specific part of the createNewScreen entry point.
 283  *
 284  * Returns the __GLcontextModes supported by this driver.
 285  */
 286 static const __DRIconfig **
 287 dri_init_screen2(__DRIscreen * sPriv)
 288 {
 289    struct dri_screen *screen;
 290    struct drm_create_screen_arg arg;
 291    const __DRIdri2LoaderExtension *dri2_ext =
 292      sPriv->dri2.loader;
 293
 294    screen = CALLOC_STRUCT(dri_screen);
 295    if (!screen)
 296       goto fail;
 297
 298    screen->api = drm_api_create();
 299    screen->sPriv = sPriv;
 300    screen->fd = sPriv->fd;
 301    sPriv->private = (void *)screen;
 302    sPriv->extensions = dri_screen_extensions;
 303    arg.mode = DRM_CREATE_NORMAL;
 304
 305    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 306    if (!screen->pipe_screen) {
 307       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 308       goto fail;
 309    }
 310
 311    /* We need to hook in here */
 312    screen->pipe_screen->update_buffer = dri_update_buffer;
 313    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 314
 315    driParseOptionInfo(&screen->optionCache,
 316                       __driConfigOptions, __driNConfigOptions);
 317
 318    screen->auto_fake_front = dri2_ext->base.version >= 3 &&
 319       dri2_ext->getBuffersWithFormat != NULL;
 320
 321    return dri_fill_in_modes(screen, 32);
 322  fail:
 323    return NULL;
 324 }
 325
 326 static void
 327 dri_destroy_screen(__DRIscreen * sPriv)
 328 {
 329    struct dri_screen *screen = dri_screen(sPriv);
 330    int i;
 331
 332    screen->pipe_screen->destroy(screen->pipe_screen);
 333
 334    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 335       FREE(screen->optionCache.info[i].name);
 336       FREE(screen->optionCache.info[i].ranges);
 337    }
 338
 339    FREE(screen->optionCache.info);
 340    FREE(screen->optionCache.values);
 341
 342    FREE(screen);
 343    sPriv->private = NULL;
 344 }
 345
 346 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 347    .InitScreen = dri_init_screen,
 348    .DestroyScreen = dri_destroy_screen,
 349    .CreateContext = dri_create_context,
 350    .DestroyContext = dri_destroy_context,
 351    .CreateBuffer = dri_create_buffer,
 352    .DestroyBuffer = dri_destroy_buffer,
 353    .SwapBuffers = dri_swap_buffers,
 354    .MakeCurrent = dri_make_current,
 355    .UnbindContext = dri_unbind_context,
 356    .GetSwapInfo = dri_get_swap_info,
 357    .GetDrawableMSC = driDrawableGetMSC32,
 358    .WaitForMSC = driWaitForMSC32,
 359    .CopySubBuffer = dri_copy_sub_buffer,
 360    .InitScreen = dri_init_screen,
 361    .InitScreen2 = dri_init_screen2,
 362 };
 363
 364 /* This is the table of extensions that the loader will dlsym() for. */
 365 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 366     &driCoreExtension.base,
 367     &driLegacyExtension.base,
 368     &driDRI2Extension.base,
 369     NULL
 370 };
 371
 372 /* vim: set sw=3 ts=8 sts=3 expandtab: */