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 "dri_st_api.h"
  42 #include "dri1_helper.h"
  43 #ifndef __NOT_HAVE_DRM_H
  44 #include "dri1.h"
  45 #include "dri2.h"
  46 #else
  47 #include "drisw.h"
  48 #endif
  49
  50 #include "util/u_inlines.h"
  51 #include "pipe/p_screen.h"
  52 #include "pipe/p_format.h"
  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    unsigned num_modes;
  76    uint8_t depth_bits_array[5];
  77    uint8_t stencil_bits_array[5];
  78    uint8_t msaa_samples_array[2];
  79    unsigned depth_buffer_factor;
  80    unsigned back_buffer_factor;
  81    unsigned msaa_samples_factor;
  82    struct pipe_screen *p_screen = screen->pipe_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,
  96                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  97    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  98                                             PIPE_TEXTURE_2D,
  99                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 100    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
 101                                             PIPE_TEXTURE_2D,
 102                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 103    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
 104                                             PIPE_TEXTURE_2D,
 105                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 106    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 107                                                PIPE_TEXTURE_2D,
 108                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 109    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 110                                                PIPE_TEXTURE_2D,
 111                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 112    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 113                                              PIPE_TEXTURE_2D,
 114                                              PIPE_TEXTURE_USAGE_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,
 120                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 121       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 122                                              PIPE_TEXTURE_2D,
 123                                              PIPE_TEXTURE_USAGE_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    msaa_samples_array[1] = 4;
 150    back_buffer_factor = 3;
 151    msaa_samples_factor = 2;
 152
 153    num_modes =
 154       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 155
 156    if (pf_r5g6b5)
 157       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 158                                         depth_bits_array, stencil_bits_array,
 159                                         depth_buffer_factor, back_buffer_modes,
 160                                         back_buffer_factor,
 161                                         msaa_samples_array, msaa_samples_factor,
 162                                         GL_TRUE);
 163
 164    if (pf_a8r8g8b8)
 165       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 166                                           depth_bits_array,
 167                                           stencil_bits_array,
 168                                           depth_buffer_factor,
 169                                           back_buffer_modes,
 170                                           back_buffer_factor,
 171                                           msaa_samples_array,
 172                                           msaa_samples_factor,
 173                                           GL_TRUE);
 174
 175    if (pf_x8r8g8b8)
 176       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 177                                           depth_bits_array,
 178                                           stencil_bits_array,
 179                                           depth_buffer_factor,
 180                                           back_buffer_modes,
 181                                           back_buffer_factor,
 182                                           msaa_samples_array,
 183                                           msaa_samples_factor,
 184                                           GL_TRUE);
 185
 186    if (pixel_bits == 16) {
 187       configs = configs_r5g6b5;
 188       if (configs_a8r8g8b8)
 189          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 190       if (configs_x8r8g8b8)
 191          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 192    } else {
 193       configs = configs_a8r8g8b8;
 194       if (configs_x8r8g8b8)
 195          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 196       if (configs_r5g6b5)
 197          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 198    }
 199
 200    if (configs == NULL) {
 201       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 202       return NULL;
 203    }
 204
 205    return (const __DRIconfig **)configs;
 206 }
 207
 208 /**
 209  * Roughly the converse of dri_fill_in_modes.
 210  */
 211 void
 212 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 213                    const __GLcontextModes *mode)
 214 {
 215    memset(stvis, 0, sizeof(*stvis));
 216
 217    stvis->samples = mode->samples;
 218    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 219
 220    if (mode->redBits == 8) {
 221       if (mode->alphaBits == 8)
 222          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 223       else
 224          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 225    } else {
 226       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 227    }
 228
 229    switch (mode->depthBits) {
 230    default:
 231    case 0:
 232       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 233       break;
 234    case 16:
 235       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 236       break;
 237    case 24:
 238       if (mode->stencilBits == 0) {
 239          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 240                                           PIPE_FORMAT_Z24X8_UNORM:
 241                                           PIPE_FORMAT_X8Z24_UNORM;
 242       } else {
 243          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 244                                           PIPE_FORMAT_Z24_UNORM_S8_USCALED:
 245                                           PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 246       }
 247       break;
 248    case 32:
 249       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 250       break;
 251    }
 252
 253    stvis->accum_format = (mode->haveAccumBuffer) ?
 254       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 255
 256    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 257    if (mode->doubleBufferMode)
 258       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 259    if (mode->stereoMode) {
 260       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 261       if (mode->doubleBufferMode)
 262          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 263    }
 264
 265    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 266       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 267    /* let the state tracker allocate the accum buffer */
 268 }
 269
 270 #ifndef __NOT_HAVE_DRM_H
 271
 272 /**
 273  * Get information about previous buffer swaps.
 274  */
 275 static int
 276 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 277 {
 278    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 279       return -1;
 280    else
 281       return 0;
 282 }
 283
 284 #endif
 285
 286 static void
 287 dri_destroy_option_cache(struct dri_screen * screen)
 288 {
 289    int i;
 290
 291    if (screen->optionCache.info) {
 292       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 293          FREE(screen->optionCache.info[i].name);
 294          FREE(screen->optionCache.info[i].ranges);
 295       }
 296       FREE(screen->optionCache.info);
 297    }
 298
 299    FREE(screen->optionCache.values);
 300 }
 301
 302 void
 303 dri_destroy_screen_helper(struct dri_screen * screen)
 304 {
 305    dri1_destroy_pipe_context(screen);
 306
 307    if (screen->smapi)
 308       dri_destroy_st_manager(screen->smapi);
 309
 310    if (screen->pipe_screen)
 311       screen->pipe_screen->destroy(screen->pipe_screen);
 312
 313    dri_destroy_option_cache(screen);
 314 }
 315
 316 static void
 317 dri_destroy_screen(__DRIscreen * sPriv)
 318 {
 319    struct dri_screen *screen = dri_screen(sPriv);
 320
 321    dri_destroy_screen_helper(screen);
 322
 323    FREE(screen);
 324    sPriv->private = NULL;
 325    sPriv->extensions = NULL;
 326 }
 327
 328 const __DRIconfig **
 329 dri_init_screen_helper(struct dri_screen *screen,
 330                        struct drm_create_screen_arg *arg,
 331                        unsigned pixel_bits)
 332 {
 333    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, arg);
 334    if (!screen->pipe_screen) {
 335       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 336       return NULL;
 337    }
 338
 339    screen->smapi = dri_create_st_manager(screen);
 340    if (!screen->smapi)
 341       return NULL;
 342
 343    driParseOptionInfo(&screen->optionCache,
 344                       __driConfigOptions, __driNConfigOptions);
 345
 346    return dri_fill_in_modes(screen, pixel_bits);
 347 }
 348
 349 /**
 350  * DRI driver virtual function table.
 351  *
 352  * DRI versions differ in their implementation of init_screen and swap_buffers.
 353  */
 354 const struct __DriverAPIRec driDriverAPI = {
 355    .DestroyScreen = dri_destroy_screen,
 356    .CreateContext = dri_create_context,
 357    .DestroyContext = dri_destroy_context,
 358    .CreateBuffer = dri_create_buffer,
 359    .DestroyBuffer = dri_destroy_buffer,
 360    .MakeCurrent = dri_make_current,
 361    .UnbindContext = dri_unbind_context,
 362
 363 #ifndef __NOT_HAVE_DRM_H
 364
 365    .GetSwapInfo = dri_get_swap_info,
 366    .GetDrawableMSC = driDrawableGetMSC32,
 367    .WaitForMSC = driWaitForMSC32,
 368    .InitScreen2 = dri2_init_screen,
 369
 370    .InitScreen = dri1_init_screen,
 371    .SwapBuffers = dri1_swap_buffers,
 372    .CopySubBuffer = dri1_copy_sub_buffer,
 373
 374 #else
 375
 376    .InitScreen = drisw_init_screen,
 377    .SwapBuffers = drisw_swap_buffers,
 378
 379 #endif
 380
 381 };
 382
 383 /* vim: set sw=3 ts=8 sts=3 expandtab: */