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_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 101                                           PIPE_TEXTURE_2D,
 102                                           PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 103    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 104                                           PIPE_TEXTURE_2D,
 105                                           PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 106    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 107                                             PIPE_TEXTURE_2D,
 108                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 109    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 110                                             PIPE_TEXTURE_2D,
 111                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 112    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 113                                             PIPE_TEXTURE_2D,
 114                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 115    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 116                                             PIPE_TEXTURE_2D,
 117                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 118    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_R5G6B5_UNORM,
 119                                              PIPE_TEXTURE_2D,
 120                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 121    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_A8R8G8B8_UNORM,
 122                                                PIPE_TEXTURE_2D,
 123                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 124    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8R8G8B8_UNORM,
 125                                                PIPE_TEXTURE_2D,
 126                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 127
 128    if (pf_z16) {
 129       depth_bits_array[depth_buffer_factor] = 16;
 130       stencil_bits_array[depth_buffer_factor++] = 0;
 131    }
 132    if (pf_x8z24 || pf_z24x8) {
 133       depth_bits_array[depth_buffer_factor] = 24;
 134       stencil_bits_array[depth_buffer_factor++] = 0;
 135       screen->d_depth_bits_last = pf_x8z24;
 136    }
 137    if (pf_s8z24 || pf_z24s8) {
 138       depth_bits_array[depth_buffer_factor] = 24;
 139       stencil_bits_array[depth_buffer_factor++] = 8;
 140       screen->sd_depth_bits_last = pf_s8z24;
 141    }
 142    if (pf_z32) {
 143       depth_bits_array[depth_buffer_factor] = 32;
 144       stencil_bits_array[depth_buffer_factor++] = 0;
 145    }
 146
 147    msaa_samples_array[0] = 0;
 148    msaa_samples_array[1] = 4;
 149    back_buffer_factor = 3;
 150    msaa_samples_factor = 2;
 151
 152    num_modes =
 153       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 154
 155    if (pixel_bits == 16 && pf_r5g6b5) {
 156       configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 157                                  depth_bits_array, stencil_bits_array,
 158                                  depth_buffer_factor, back_buffer_modes,
 159                                  back_buffer_factor,
 160                                  msaa_samples_array, msaa_samples_factor);
 161    } else {
 162       __DRIconfig **configs_a8r8g8b8 = NULL;
 163       __DRIconfig **configs_x8r8g8b8 = NULL;
 164
 165       if (pf_a8r8g8b8)
 166          configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 167                                              depth_bits_array,
 168                                              stencil_bits_array,
 169                                              depth_buffer_factor,
 170                                              back_buffer_modes,
 171                                              back_buffer_factor,
 172                                              msaa_samples_array,
 173                                              msaa_samples_factor);
 174       if (pf_x8r8g8b8)
 175          configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 176                                              depth_bits_array,
 177                                              stencil_bits_array,
 178                                              depth_buffer_factor,
 179                                              back_buffer_modes,
 180                                              back_buffer_factor,
 181                                              msaa_samples_array,
 182                                              msaa_samples_factor);
 183
 184       if (configs_a8r8g8b8 && configs_x8r8g8b8)
 185          configs = driConcatConfigs(configs_x8r8g8b8, configs_a8r8g8b8);
 186       else if (configs_a8r8g8b8)
 187          configs = configs_a8r8g8b8;
 188       else if (configs_x8r8g8b8)
 189          configs = configs_x8r8g8b8;
 190       else
 191          configs = NULL;
 192    }
 193
 194    if (configs == NULL) {
 195       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 196       return NULL;
 197    }
 198
 199    return (const __DRIconfig **)configs;
 200 }
 201
 202 /**
 203  * Get information about previous buffer swaps.
 204  */
 205 static int
 206 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 207 {
 208    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 209       return -1;
 210    else
 211       return 0;
 212 }
 213
 214 static INLINE void
 215 dri_copy_version(struct dri1_api_version *dst,
 216                  const struct __DRIversionRec *src)
 217 {
 218    dst->major = src->major;
 219    dst->minor = src->minor;
 220    dst->patch_level = src->patch;
 221 }
 222
 223 static const __DRIconfig **
 224 dri_init_screen(__DRIscreen * sPriv)
 225 {
 226    struct dri_screen *screen;
 227    const __DRIconfig **configs;
 228    struct dri1_create_screen_arg arg;
 229
 230    screen = CALLOC_STRUCT(dri_screen);
 231    if (!screen)
 232       return NULL;
 233
 234    screen->api = drm_api_create();
 235    screen->sPriv = sPriv;
 236    screen->fd = sPriv->fd;
 237    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 238
 239    sPriv->private = (void *)screen;
 240    sPriv->extensions = dri_screen_extensions;
 241
 242    arg.base.mode = DRM_CREATE_DRI1;
 243    arg.lf = &dri1_lf;
 244    arg.ddx_info = sPriv->pDevPriv;
 245    arg.ddx_info_size = sPriv->devPrivSize;
 246    arg.sarea = sPriv->pSAREA;
 247    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 248    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 249    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 250    arg.api = NULL;
 251
 252    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 253
 254    if (!screen->pipe_screen || !arg.api) {
 255       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 256       goto out_no_screen;
 257    }
 258
 259    __dri1_api_hooks = arg.api;
 260
 261    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 262    driParseOptionInfo(&screen->optionCache,
 263                       __driConfigOptions, __driNConfigOptions);
 264
 265    /**
 266     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 267     * want to support other color bit depths than the server is currently
 268     * using.
 269     */
 270
 271    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 272    if (!configs)
 273       goto out_no_configs;
 274
 275    return configs;
 276  out_no_configs:
 277    screen->pipe_screen->destroy(screen->pipe_screen);
 278  out_no_screen:
 279    FREE(screen);
 280    return NULL;
 281 }
 282
 283 /**
 284  * This is the driver specific part of the createNewScreen entry point.
 285  *
 286  * Returns the __GLcontextModes supported by this driver.
 287  */
 288 static const __DRIconfig **
 289 dri_init_screen2(__DRIscreen * sPriv)
 290 {
 291    struct dri_screen *screen;
 292    struct drm_create_screen_arg arg;
 293    const __DRIdri2LoaderExtension *dri2_ext =
 294      sPriv->dri2.loader;
 295
 296    screen = CALLOC_STRUCT(dri_screen);
 297    if (!screen)
 298       goto fail;
 299
 300    screen->api = drm_api_create();
 301    screen->sPriv = sPriv;
 302    screen->fd = sPriv->fd;
 303    sPriv->private = (void *)screen;
 304    sPriv->extensions = dri_screen_extensions;
 305    arg.mode = DRM_CREATE_NORMAL;
 306
 307    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 308    if (!screen->pipe_screen) {
 309       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 310       goto fail;
 311    }
 312
 313    /* We need to hook in here */
 314    screen->pipe_screen->update_buffer = dri_update_buffer;
 315    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 316
 317    driParseOptionInfo(&screen->optionCache,
 318                       __driConfigOptions, __driNConfigOptions);
 319
 320    screen->auto_fake_front = dri2_ext->base.version >= 3 &&
 321       dri2_ext->getBuffersWithFormat != NULL;
 322
 323    return dri_fill_in_modes(screen, 32);
 324  fail:
 325    return NULL;
 326 }
 327
 328 static void
 329 dri_destroy_screen(__DRIscreen * sPriv)
 330 {
 331    struct dri_screen *screen = dri_screen(sPriv);
 332    int i;
 333
 334    screen->pipe_screen->destroy(screen->pipe_screen);
 335
 336    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 337       FREE(screen->optionCache.info[i].name);
 338       FREE(screen->optionCache.info[i].ranges);
 339    }
 340
 341    FREE(screen->optionCache.info);
 342    FREE(screen->optionCache.values);
 343
 344    FREE(screen);
 345    sPriv->private = NULL;
 346 }
 347
 348 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 349    .InitScreen = dri_init_screen,
 350    .DestroyScreen = dri_destroy_screen,
 351    .CreateContext = dri_create_context,
 352    .DestroyContext = dri_destroy_context,
 353    .CreateBuffer = dri_create_buffer,
 354    .DestroyBuffer = dri_destroy_buffer,
 355    .SwapBuffers = dri_swap_buffers,
 356    .MakeCurrent = dri_make_current,
 357    .UnbindContext = dri_unbind_context,
 358    .GetSwapInfo = dri_get_swap_info,
 359    .GetDrawableMSC = driDrawableGetMSC32,
 360    .WaitForMSC = driWaitForMSC32,
 361    .CopySubBuffer = dri_copy_sub_buffer,
 362    .InitScreen = dri_init_screen,
 363    .InitScreen2 = dri_init_screen2,
 364 };
 365
 366 /* This is the table of extensions that the loader will dlsym() for. */
 367 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 368     &driCoreExtension.base,
 369     &driLegacyExtension.base,
 370     &driDRI2Extension.base,
 371     NULL
 372 };
 373
 374 /* vim: set sw=3 ts=8 sts=3 expandtab: */