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 #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 #include "state_tracker/drm_api.h"
  54
  55 #include "util/u_debug.h"
  56
  57 PUBLIC const char __driConfigOptions[] =
  58    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  59    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  60    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  61    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  62 /* DRI_CONF_FORCE_S3TC_ENABLE(false) */
  63    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  64    DRI_CONF_SECTION_END DRI_CONF_END;
  65
  66 const uint __driNConfigOptions = 3;
  67
  68 const __DRIconfig **
  69 dri_fill_in_modes(struct dri_screen *screen,
  70                   unsigned pixel_bits)
  71 {
  72    __DRIconfig **configs = NULL;
  73    __DRIconfig **configs_r5g6b5 = NULL;
  74    __DRIconfig **configs_a8r8g8b8 = NULL;
  75    __DRIconfig **configs_x8r8g8b8 = NULL;
  76    unsigned num_modes;
  77    uint8_t depth_bits_array[5];
  78    uint8_t stencil_bits_array[5];
  79    uint8_t msaa_samples_array[2];
  80    unsigned depth_buffer_factor;
  81    unsigned back_buffer_factor;
  82    unsigned msaa_samples_factor;
  83    struct pipe_screen *p_screen = screen->pipe_screen;
  84    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  85    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  86
  87    static const GLenum back_buffer_modes[] = {
  88       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  89    };
  90
  91    depth_bits_array[0] = 0;
  92    stencil_bits_array[0] = 0;
  93    depth_buffer_factor = 1;
  94
  95    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
  96                                             PIPE_TEXTURE_2D,
  97                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  98    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  99                                             PIPE_TEXTURE_2D,
 100                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 101    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 102                                             PIPE_TEXTURE_2D,
 103                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 104    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 105                                             PIPE_TEXTURE_2D,
 106                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 107    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 108                                                PIPE_TEXTURE_2D,
 109                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 110    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 111                                                PIPE_TEXTURE_2D,
 112                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 113    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 114                                              PIPE_TEXTURE_2D,
 115                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 116
 117    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 118    if (dri_with_format(screen->sPriv)) {
 119       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 120                                              PIPE_TEXTURE_2D,
 121                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 122       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 123                                              PIPE_TEXTURE_2D,
 124                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 125    } else {
 126       pf_z16 = FALSE;
 127       pf_z32 = FALSE;
 128    }
 129
 130    if (pf_z16) {
 131       depth_bits_array[depth_buffer_factor] = 16;
 132       stencil_bits_array[depth_buffer_factor++] = 0;
 133    }
 134    if (pf_x8z24 || pf_z24x8) {
 135       depth_bits_array[depth_buffer_factor] = 24;
 136       stencil_bits_array[depth_buffer_factor++] = 0;
 137       screen->d_depth_bits_last = pf_x8z24;
 138    }
 139    if (pf_s8z24 || pf_z24s8) {
 140       depth_bits_array[depth_buffer_factor] = 24;
 141       stencil_bits_array[depth_buffer_factor++] = 8;
 142       screen->sd_depth_bits_last = pf_s8z24;
 143    }
 144    if (pf_z32) {
 145       depth_bits_array[depth_buffer_factor] = 32;
 146       stencil_bits_array[depth_buffer_factor++] = 0;
 147    }
 148
 149    msaa_samples_array[0] = 0;
 150    msaa_samples_array[1] = 4;
 151    back_buffer_factor = 3;
 152    msaa_samples_factor = 2;
 153
 154    num_modes =
 155       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 156
 157    if (pf_r5g6b5)
 158       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 159                                         depth_bits_array, stencil_bits_array,
 160                                         depth_buffer_factor, back_buffer_modes,
 161                                         back_buffer_factor,
 162                                         msaa_samples_array, msaa_samples_factor,
 163                                         GL_TRUE);
 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                                           GL_TRUE);
 175
 176    if (pf_x8r8g8b8)
 177       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 178                                           depth_bits_array,
 179                                           stencil_bits_array,
 180                                           depth_buffer_factor,
 181                                           back_buffer_modes,
 182                                           back_buffer_factor,
 183                                           msaa_samples_array,
 184                                           msaa_samples_factor,
 185                                           GL_TRUE);
 186
 187    if (pixel_bits == 16) {
 188       configs = configs_r5g6b5;
 189       if (configs_a8r8g8b8)
 190          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 191       if (configs_x8r8g8b8)
 192          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 193    } else {
 194       configs = configs_a8r8g8b8;
 195       if (configs_x8r8g8b8)
 196          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 197       if (configs_r5g6b5)
 198          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 199    }
 200
 201    if (configs == NULL) {
 202       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 203       return NULL;
 204    }
 205
 206    return (const __DRIconfig **)configs;
 207 }
 208
 209 /**
 210  * Roughly the converse of dri_fill_in_modes.
 211  */
 212 void
 213 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 214                    const __GLcontextModes *mode)
 215 {
 216    memset(stvis, 0, sizeof(*stvis));
 217
 218    stvis->samples = mode->samples;
 219    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 220
 221    if (mode->redBits == 8) {
 222       if (mode->alphaBits == 8)
 223          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 224       else
 225          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 226    } else {
 227       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 228    }
 229
 230    switch (mode->depthBits) {
 231    default:
 232    case 0:
 233       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 234       break;
 235    case 16:
 236       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 237       break;
 238    case 24:
 239       if (mode->stencilBits == 0) {
 240          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 241                                           PIPE_FORMAT_Z24X8_UNORM:
 242                                           PIPE_FORMAT_X8Z24_UNORM;
 243       } else {
 244          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 245                                           PIPE_FORMAT_Z24S8_UNORM:
 246                                           PIPE_FORMAT_S8Z24_UNORM;
 247       }
 248       break;
 249    case 32:
 250       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 251       break;
 252    }
 253
 254    stvis->accum_format = (mode->haveAccumBuffer) ?
 255       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 256
 257    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 258    if (mode->doubleBufferMode)
 259       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 260    if (mode->stereoMode) {
 261       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 262       if (mode->doubleBufferMode)
 263          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 264    }
 265
 266    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 267       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 268    /* let the state tracker allocate the accum buffer */
 269 }
 270
 271 #ifndef __NOT_HAVE_DRM_H
 272
 273 /**
 274  * Get information about previous buffer swaps.
 275  */
 276 static int
 277 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 278 {
 279    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 280       return -1;
 281    else
 282       return 0;
 283 }
 284
 285 #endif
 286
 287 static void
 288 dri_destroy_option_cache(struct dri_screen * screen)
 289 {
 290    int i;
 291
 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
 297    FREE(screen->optionCache.info);
 298    FREE(screen->optionCache.values);
 299 }
 300
 301 void
 302 dri_destroy_screen(__DRIscreen * sPriv)
 303 {
 304    struct dri_screen *screen = dri_screen(sPriv);
 305
 306    dri1_destroy_pipe_context(screen);
 307
 308    if (screen->smapi)
 309       dri_destroy_st_manager(screen->smapi);
 310
 311    if (screen->pipe_screen)
 312       screen->pipe_screen->destroy(screen->pipe_screen);
 313
 314    dri_destroy_option_cache(screen);
 315
 316    FREE(screen);
 317    sPriv->private = NULL;
 318    sPriv->extensions = NULL;
 319 }
 320
 321 #ifndef __NOT_HAVE_DRM_H
 322
 323 const struct __DriverAPIRec driDriverAPI = {
 324    .DestroyScreen = dri_destroy_screen,
 325    .CreateContext = dri_create_context,
 326    .DestroyContext = dri_destroy_context,
 327    .CreateBuffer = dri_create_buffer,
 328    .DestroyBuffer = dri_destroy_buffer,
 329    .MakeCurrent = dri_make_current,
 330    .UnbindContext = dri_unbind_context,
 331    .GetSwapInfo = dri_get_swap_info,
 332    .GetDrawableMSC = driDrawableGetMSC32,
 333    .WaitForMSC = driWaitForMSC32,
 334    .InitScreen2 = dri2_init_screen,
 335
 336    .InitScreen = dri1_init_screen,
 337    .SwapBuffers = dri1_swap_buffers,
 338    .CopySubBuffer = dri1_copy_sub_buffer,
 339 };
 340
 341 /* This is the table of extensions that the loader will dlsym() for. */
 342 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 343     &driCoreExtension.base,
 344     &driLegacyExtension.base,
 345     &driDRI2Extension.base,
 346     NULL
 347 };
 348
 349 #else
 350
 351 const struct __DriverAPIRec driDriverAPI = {
 352    .DestroyScreen = dri_destroy_screen,
 353    .CreateContext = dri_create_context,
 354    .DestroyContext = dri_destroy_context,
 355    .CreateBuffer = dri_create_buffer,
 356    .DestroyBuffer = dri_destroy_buffer,
 357    .MakeCurrent = dri_make_current,
 358    .UnbindContext = dri_unbind_context,
 359
 360    .InitScreen = drisw_init_screen,
 361    .SwapBuffers = drisw_swap_buffers,
 362 };
 363
 364 /* This is the table of extensions that the loader will dlsym() for. */
 365 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 366     &driCoreExtension.base,
 367     &driSWRastExtension.base,
 368     NULL
 369 };
 370
 371 #endif
 372
 373 /* vim: set sw=3 ts=8 sts=3 expandtab: */