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 #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 #include "dri1.h"
  44 #include "dri2.h"
  45 #include "drisw.h"
  46
  47 #include "util/u_inlines.h"
  48 #include "pipe/p_screen.h"
  49 #include "pipe/p_format.h"
  50 #include "state_tracker/drm_api.h"
  51
  52 #include "util/u_debug.h"
  53
  54 PUBLIC const char __driConfigOptions[] =
  55    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  56    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  57    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  58    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  59 /* DRI_CONF_FORCE_S3TC_ENABLE(false) */
  60    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  61    DRI_CONF_SECTION_END DRI_CONF_END;
  62
  63 const uint __driNConfigOptions = 3;
  64
  65 const __DRIconfig **
  66 dri_fill_in_modes(struct dri_screen *screen,
  67                   unsigned pixel_bits)
  68 {
  69    __DRIconfig **configs = NULL;
  70    __DRIconfig **configs_r5g6b5 = NULL;
  71    __DRIconfig **configs_a8r8g8b8 = NULL;
  72    __DRIconfig **configs_x8r8g8b8 = NULL;
  73    unsigned num_modes;
  74    uint8_t depth_bits_array[5];
  75    uint8_t stencil_bits_array[5];
  76    uint8_t msaa_samples_array[2];
  77    unsigned depth_buffer_factor;
  78    unsigned back_buffer_factor;
  79    unsigned msaa_samples_factor;
  80    struct pipe_screen *p_screen = screen->pipe_screen;
  81    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  82    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  83
  84    static const GLenum back_buffer_modes[] = {
  85       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  86    };
  87
  88    depth_bits_array[0] = 0;
  89    stencil_bits_array[0] = 0;
  90    depth_buffer_factor = 1;
  91
  92    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
  93                                             PIPE_TEXTURE_2D,
  94                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  95    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  96                                             PIPE_TEXTURE_2D,
  97                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  98    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
  99                                             PIPE_TEXTURE_2D,
 100                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 101    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 102                                             PIPE_TEXTURE_2D,
 103                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 104    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 105                                                PIPE_TEXTURE_2D,
 106                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 107    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 108                                                PIPE_TEXTURE_2D,
 109                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 110    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 111                                              PIPE_TEXTURE_2D,
 112                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 113
 114    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 115    if (dri_with_format(screen->sPriv)) {
 116       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 117                                              PIPE_TEXTURE_2D,
 118                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 119       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 120                                              PIPE_TEXTURE_2D,
 121                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 122    } else {
 123       pf_z16 = FALSE;
 124       pf_z32 = FALSE;
 125    }
 126
 127    if (pf_z16) {
 128       depth_bits_array[depth_buffer_factor] = 16;
 129       stencil_bits_array[depth_buffer_factor++] = 0;
 130    }
 131    if (pf_x8z24 || pf_z24x8) {
 132       depth_bits_array[depth_buffer_factor] = 24;
 133       stencil_bits_array[depth_buffer_factor++] = 0;
 134       screen->d_depth_bits_last = pf_x8z24;
 135    }
 136    if (pf_s8z24 || pf_z24s8) {
 137       depth_bits_array[depth_buffer_factor] = 24;
 138       stencil_bits_array[depth_buffer_factor++] = 8;
 139       screen->sd_depth_bits_last = pf_s8z24;
 140    }
 141    if (pf_z32) {
 142       depth_bits_array[depth_buffer_factor] = 32;
 143       stencil_bits_array[depth_buffer_factor++] = 0;
 144    }
 145
 146    msaa_samples_array[0] = 0;
 147    msaa_samples_array[1] = 4;
 148    back_buffer_factor = 3;
 149    msaa_samples_factor = 2;
 150
 151    num_modes =
 152       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 153
 154    if (pf_r5g6b5)
 155       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 156                                         depth_bits_array, stencil_bits_array,
 157                                         depth_buffer_factor, back_buffer_modes,
 158                                         back_buffer_factor,
 159                                         msaa_samples_array, msaa_samples_factor,
 160                                         GL_TRUE);
 161
 162    if (pf_a8r8g8b8)
 163       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 164                                           depth_bits_array,
 165                                           stencil_bits_array,
 166                                           depth_buffer_factor,
 167                                           back_buffer_modes,
 168                                           back_buffer_factor,
 169                                           msaa_samples_array,
 170                                           msaa_samples_factor,
 171                                           GL_TRUE);
 172
 173    if (pf_x8r8g8b8)
 174       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 175                                           depth_bits_array,
 176                                           stencil_bits_array,
 177                                           depth_buffer_factor,
 178                                           back_buffer_modes,
 179                                           back_buffer_factor,
 180                                           msaa_samples_array,
 181                                           msaa_samples_factor,
 182                                           GL_TRUE);
 183
 184    if (pixel_bits == 16) {
 185       configs = configs_r5g6b5;
 186       if (configs_a8r8g8b8)
 187          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 188       if (configs_x8r8g8b8)
 189          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 190    } else {
 191       configs = configs_a8r8g8b8;
 192       if (configs_x8r8g8b8)
 193          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 194       if (configs_r5g6b5)
 195          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 196    }
 197
 198    if (configs == NULL) {
 199       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 200       return NULL;
 201    }
 202
 203    return (const __DRIconfig **)configs;
 204 }
 205
 206 /**
 207  * Roughly the converse of dri_fill_in_modes.
 208  */
 209 void
 210 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 211                    const __GLcontextModes *mode)
 212 {
 213    memset(stvis, 0, sizeof(*stvis));
 214
 215    stvis->samples = mode->samples;
 216    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 217
 218    if (mode->redBits == 8) {
 219       if (mode->alphaBits == 8)
 220          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 221       else
 222          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 223    } else {
 224       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 225    }
 226
 227    switch (mode->depthBits) {
 228    default:
 229    case 0:
 230       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 231       break;
 232    case 16:
 233       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 234       break;
 235    case 24:
 236       if (mode->stencilBits == 0) {
 237          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 238                                           PIPE_FORMAT_Z24X8_UNORM:
 239                                           PIPE_FORMAT_X8Z24_UNORM;
 240       } else {
 241          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 242                                           PIPE_FORMAT_Z24S8_UNORM:
 243                                           PIPE_FORMAT_S8Z24_UNORM;
 244       }
 245       break;
 246    case 32:
 247       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 248       break;
 249    }
 250
 251    stvis->accum_format = (mode->haveAccumBuffer) ?
 252       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 253
 254    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 255    if (mode->doubleBufferMode)
 256       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 257    if (mode->stereoMode) {
 258       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 259       if (mode->doubleBufferMode)
 260          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 261    }
 262
 263    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 264       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 265    /* let the state tracker allocate the accum buffer */
 266 }
 267
 268 #ifndef __NOT_HAVE_DRM_H
 269
 270 /**
 271  * Get information about previous buffer swaps.
 272  */
 273 static int
 274 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 275 {
 276    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 277       return -1;
 278    else
 279       return 0;
 280 }
 281
 282 #endif
 283
 284 static void
 285 dri_destroy_option_cache(struct dri_screen * screen)
 286 {
 287    int i;
 288
 289    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 290       FREE(screen->optionCache.info[i].name);
 291       FREE(screen->optionCache.info[i].ranges);
 292    }
 293
 294    FREE(screen->optionCache.info);
 295    FREE(screen->optionCache.values);
 296 }
 297
 298 void
 299 dri_destroy_screen(__DRIscreen * sPriv)
 300 {
 301    struct dri_screen *screen = dri_screen(sPriv);
 302
 303    dri1_destroy_pipe_context(screen);
 304
 305    if (screen->smapi)
 306       dri_destroy_st_manager(screen->smapi);
 307
 308    if (screen->pipe_screen)
 309       screen->pipe_screen->destroy(screen->pipe_screen);
 310
 311    dri_destroy_option_cache(screen);
 312
 313    FREE(screen);
 314    sPriv->private = NULL;
 315    sPriv->extensions = NULL;
 316 }
 317
 318 #ifndef __NOT_HAVE_DRM_H
 319
 320 const struct __DriverAPIRec driDriverAPI = {
 321    .DestroyScreen = dri_destroy_screen,
 322    .CreateContext = dri_create_context,
 323    .DestroyContext = dri_destroy_context,
 324    .CreateBuffer = dri_create_buffer,
 325    .DestroyBuffer = dri_destroy_buffer,
 326    .MakeCurrent = dri_make_current,
 327    .UnbindContext = dri_unbind_context,
 328    .GetSwapInfo = dri_get_swap_info,
 329    .GetDrawableMSC = driDrawableGetMSC32,
 330    .WaitForMSC = driWaitForMSC32,
 331    .InitScreen2 = dri2_init_screen,
 332
 333    .InitScreen = dri1_init_screen,
 334    .SwapBuffers = dri1_swap_buffers,
 335    .CopySubBuffer = dri1_copy_sub_buffer,
 336 };
 337
 338 /* This is the table of extensions that the loader will dlsym() for. */
 339 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 340     &driCoreExtension.base,
 341     &driLegacyExtension.base,
 342     &driDRI2Extension.base,
 343     NULL
 344 };
 345
 346 #else
 347
 348 const struct __DriverAPIRec driDriverAPI = {
 349    .DestroyScreen = dri_destroy_screen,
 350    .CreateContext = dri_create_context,
 351    .DestroyContext = dri_destroy_context,
 352    .CreateBuffer = dri_create_buffer,
 353    .DestroyBuffer = dri_destroy_buffer,
 354    .MakeCurrent = dri_make_current,
 355    .UnbindContext = dri_unbind_context,
 356
 357    .InitScreen = drisw_init_screen,
 358    .SwapBuffers = drisw_swap_buffers,
 359 };
 360
 361 /* This is the table of extensions that the loader will dlsym() for. */
 362 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 363     &driCoreExtension.base,
 364     &driSWRastExtension.base,
 365     NULL
 366 };
 367
 368 #endif
 369
 370 /* vim: set sw=3 ts=8 sts=3 expandtab: */