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 "xmlpool.h"
  34
  35 #include "dri_screen.h"
  36
  37 #include "util/u_inlines.h"
  38 #include "pipe/p_screen.h"
  39 #include "pipe/p_format.h"
  40 #include "pipe-loader/pipe_loader.h"
  41 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
  42 #include "state_tracker/drm_driver.h"
  43
  44 #include "util/u_debug.h"
  45 #include "util/u_format_s3tc.h"
  46
  47 #define MSAA_VISUAL_MAX_SAMPLES 32
  48
  49 #undef false
  50
  51 const __DRIconfigOptionsExtension gallium_config_options = {
  52    .base = { __DRI_CONFIG_OPTIONS, 1 },
  53    .xml =
  54
  55    DRI_CONF_BEGIN
  56       DRI_CONF_SECTION_QUALITY
  57          DRI_CONF_FORCE_S3TC_ENABLE("false")
  58          DRI_CONF_PP_CELSHADE(0)
  59          DRI_CONF_PP_NORED(0)
  60          DRI_CONF_PP_NOGREEN(0)
  61          DRI_CONF_PP_NOBLUE(0)
  62          DRI_CONF_PP_JIMENEZMLAA(0, 0, 32)
  63          DRI_CONF_PP_JIMENEZMLAA_COLOR(0, 0, 32)
  64       DRI_CONF_SECTION_END
  65
  66       DRI_CONF_SECTION_DEBUG
  67          DRI_CONF_FORCE_GLSL_EXTENSIONS_WARN("false")
  68          DRI_CONF_DISABLE_GLSL_LINE_CONTINUATIONS("false")
  69          DRI_CONF_DISABLE_BLEND_FUNC_EXTENDED("false")
  70          DRI_CONF_DISABLE_SHADER_BIT_ENCODING("false")
  71          DRI_CONF_FORCE_GLSL_VERSION(0)
  72          DRI_CONF_ALLOW_GLSL_EXTENSION_DIRECTIVE_MIDSHADER("false")
  73       DRI_CONF_SECTION_END
  74
  75       DRI_CONF_SECTION_MISCELLANEOUS
  76          DRI_CONF_ALWAYS_HAVE_DEPTH_BUFFER("false")
  77       DRI_CONF_SECTION_END
  78    DRI_CONF_END
  79 };
  80
  81 #define false 0
  82
  83 static void
  84 dri_fill_st_options(struct st_config_options *options,
  85                     const struct driOptionCache * optionCache)
  86 {
  87    options->disable_blend_func_extended =
  88       driQueryOptionb(optionCache, "disable_blend_func_extended");
  89    options->disable_glsl_line_continuations =
  90       driQueryOptionb(optionCache, "disable_glsl_line_continuations");
  91    options->disable_shader_bit_encoding =
  92       driQueryOptionb(optionCache, "disable_shader_bit_encoding");
  93    options->force_glsl_extensions_warn =
  94       driQueryOptionb(optionCache, "force_glsl_extensions_warn");
  95    options->force_glsl_version =
  96       driQueryOptioni(optionCache, "force_glsl_version");
  97    options->force_s3tc_enable =
  98       driQueryOptionb(optionCache, "force_s3tc_enable");
  99    options->allow_glsl_extension_directive_midshader =
 100       driQueryOptionb(optionCache, "allow_glsl_extension_directive_midshader");
 101 }
 102
 103 static const __DRIconfig **
 104 dri_fill_in_modes(struct dri_screen *screen)
 105 {
 106    static const mesa_format mesa_formats[3] = {
 107       MESA_FORMAT_B8G8R8A8_UNORM,
 108       MESA_FORMAT_B8G8R8X8_UNORM,
 109       MESA_FORMAT_B5G6R5_UNORM,
 110    };
 111    static const enum pipe_format pipe_formats[3] = {
 112       PIPE_FORMAT_BGRA8888_UNORM,
 113       PIPE_FORMAT_BGRX8888_UNORM,
 114       PIPE_FORMAT_B5G6R5_UNORM,
 115    };
 116    mesa_format format;
 117    __DRIconfig **configs = NULL;
 118    uint8_t depth_bits_array[5];
 119    uint8_t stencil_bits_array[5];
 120    unsigned depth_buffer_factor;
 121    unsigned msaa_samples_max;
 122    unsigned i;
 123    struct pipe_screen *p_screen = screen->base.screen;
 124    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
 125
 126    static const GLenum back_buffer_modes[] = {
 127       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 128    };
 129
 130    if (driQueryOptionb(&screen->optionCache, "always_have_depth_buffer")) {
 131       /* all visuals will have a depth buffer */
 132       depth_buffer_factor = 0;
 133    }
 134    else {
 135       depth_bits_array[0] = 0;
 136       stencil_bits_array[0] = 0;
 137       depth_buffer_factor = 1;
 138    }
 139
 140    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
 141       ? MSAA_VISUAL_MAX_SAMPLES : 1;
 142
 143    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 144                                             PIPE_TEXTURE_2D, 0,
 145                                             PIPE_BIND_DEPTH_STENCIL);
 146    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 147                                             PIPE_TEXTURE_2D, 0,
 148                                             PIPE_BIND_DEPTH_STENCIL);
 149    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
 150                                             PIPE_TEXTURE_2D, 0,
 151                                             PIPE_BIND_DEPTH_STENCIL);
 152    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
 153                                             PIPE_TEXTURE_2D, 0,
 154                                             PIPE_BIND_DEPTH_STENCIL);
 155    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 156                                           PIPE_TEXTURE_2D, 0,
 157                                           PIPE_BIND_DEPTH_STENCIL);
 158    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 159                                           PIPE_TEXTURE_2D, 0,
 160                                           PIPE_BIND_DEPTH_STENCIL);
 161
 162    if (pf_z16) {
 163       depth_bits_array[depth_buffer_factor] = 16;
 164       stencil_bits_array[depth_buffer_factor++] = 0;
 165    }
 166    if (pf_x8z24 || pf_z24x8) {
 167       depth_bits_array[depth_buffer_factor] = 24;
 168       stencil_bits_array[depth_buffer_factor++] = 0;
 169       screen->d_depth_bits_last = pf_x8z24;
 170    }
 171    if (pf_s8z24 || pf_z24s8) {
 172       depth_bits_array[depth_buffer_factor] = 24;
 173       stencil_bits_array[depth_buffer_factor++] = 8;
 174       screen->sd_depth_bits_last = pf_s8z24;
 175    }
 176    if (pf_z32) {
 177       depth_bits_array[depth_buffer_factor] = 32;
 178       stencil_bits_array[depth_buffer_factor++] = 0;
 179    }
 180
 181    assert(ARRAY_SIZE(mesa_formats) == ARRAY_SIZE(pipe_formats));
 182
 183    /* Add configs. */
 184    for (format = 0; format < ARRAY_SIZE(mesa_formats); format++) {
 185       __DRIconfig **new_configs = NULL;
 186       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
 187       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
 188
 189       for (i = 1; i <= msaa_samples_max; i++) {
 190          int samples = i > 1 ? i : 0;
 191
 192          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
 193                                            PIPE_TEXTURE_2D, samples,
 194                                            PIPE_BIND_RENDER_TARGET)) {
 195             msaa_modes[num_msaa_modes++] = samples;
 196          }
 197       }
 198
 199       if (num_msaa_modes) {
 200          /* Single-sample configs with an accumulation buffer. */
 201          new_configs = driCreateConfigs(mesa_formats[format],
 202                                         depth_bits_array, stencil_bits_array,
 203                                         depth_buffer_factor, back_buffer_modes,
 204                                         ARRAY_SIZE(back_buffer_modes),
 205                                         msaa_modes, 1,
 206                                         GL_TRUE);
 207          configs = driConcatConfigs(configs, new_configs);
 208
 209          /* Multi-sample configs without an accumulation buffer. */
 210          if (num_msaa_modes > 1) {
 211             new_configs = driCreateConfigs(mesa_formats[format],
 212                                            depth_bits_array, stencil_bits_array,
 213                                            depth_buffer_factor, back_buffer_modes,
 214                                            ARRAY_SIZE(back_buffer_modes),
 215                                            msaa_modes+1, num_msaa_modes-1,
 216                                            GL_FALSE);
 217             configs = driConcatConfigs(configs, new_configs);
 218          }
 219       }
 220    }
 221
 222    if (configs == NULL) {
 223       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 224       return NULL;
 225    }
 226
 227    return (const __DRIconfig **)configs;
 228 }
 229
 230 /**
 231  * Roughly the converse of dri_fill_in_modes.
 232  */
 233 void
 234 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 235                    const struct gl_config *mode)
 236 {
 237    memset(stvis, 0, sizeof(*stvis));
 238
 239    if (!mode)
 240       return;
 241
 242    if (mode->redBits == 8) {
 243       if (mode->alphaBits == 8)
 244          stvis->color_format = PIPE_FORMAT_BGRA8888_UNORM;
 245       else
 246          stvis->color_format = PIPE_FORMAT_BGRX8888_UNORM;
 247    } else {
 248       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 249    }
 250
 251    if (mode->sampleBuffers) {
 252       stvis->samples = mode->samples;
 253    }
 254
 255    switch (mode->depthBits) {
 256    default:
 257    case 0:
 258       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 259       break;
 260    case 16:
 261       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 262       break;
 263    case 24:
 264       if (mode->stencilBits == 0) {
 265          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 266                                           PIPE_FORMAT_Z24X8_UNORM:
 267                                           PIPE_FORMAT_X8Z24_UNORM;
 268       } else {
 269          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 270                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
 271                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
 272       }
 273       break;
 274    case 32:
 275       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 276       break;
 277    }
 278
 279    stvis->accum_format = (mode->haveAccumBuffer) ?
 280       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 281
 282    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 283    stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
 284    if (mode->doubleBufferMode) {
 285       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 286       stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
 287    }
 288    if (mode->stereoMode) {
 289       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 290       if (mode->doubleBufferMode)
 291          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 292    }
 293
 294    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 295       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 296    /* let the state tracker allocate the accum buffer */
 297 }
 298
 299 static boolean
 300 dri_get_egl_image(struct st_manager *smapi,
 301                   void *egl_image,
 302                   struct st_egl_image *stimg)
 303 {
 304    struct dri_screen *screen = (struct dri_screen *)smapi;
 305    __DRIimage *img = NULL;
 306
 307    if (screen->lookup_egl_image) {
 308       img = screen->lookup_egl_image(screen, egl_image);
 309    }
 310
 311    if (!img)
 312       return FALSE;
 313
 314    stimg->texture = NULL;
 315    pipe_resource_reference(&stimg->texture, img->texture);
 316    stimg->level = img->level;
 317    stimg->layer = img->layer;
 318
 319    return TRUE;
 320 }
 321
 322 static int
 323 dri_get_param(struct st_manager *smapi,
 324               enum st_manager_param param)
 325 {
 326    struct dri_screen *screen = (struct dri_screen *)smapi;
 327
 328    switch(param) {
 329    case ST_MANAGER_BROKEN_INVALIDATE:
 330       return screen->broken_invalidate;
 331    default:
 332       return 0;
 333    }
 334 }
 335
 336 static void
 337 dri_destroy_option_cache(struct dri_screen * screen)
 338 {
 339    int i;
 340
 341    if (screen->optionCache.info) {
 342       for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 343          free(screen->optionCache.info[i].name);
 344          free(screen->optionCache.info[i].ranges);
 345       }
 346       free(screen->optionCache.info);
 347    }
 348
 349    free(screen->optionCache.values);
 350
 351    /* Default values are copied to screen->optionCache->values in
 352     * initOptionCache. The info field, however, is a pointer copy, so don't free
 353     * that twice.
 354     */
 355    free(screen->optionCacheDefaults.values);
 356 }
 357
 358 void
 359 dri_destroy_screen_helper(struct dri_screen * screen)
 360 {
 361    if (screen->st_api && screen->st_api->destroy)
 362       screen->st_api->destroy(screen->st_api);
 363
 364    if (screen->base.screen)
 365       screen->base.screen->destroy(screen->base.screen);
 366
 367    dri_destroy_option_cache(screen);
 368 }
 369
 370 void
 371 dri_destroy_screen(__DRIscreen * sPriv)
 372 {
 373    struct dri_screen *screen = dri_screen(sPriv);
 374
 375    dri_destroy_screen_helper(screen);
 376
 377 #if !GALLIUM_STATIC_TARGETS
 378    pipe_loader_release(&screen->dev, 1);
 379 #endif // !GALLIUM_STATIC_TARGETS
 380
 381    free(screen);
 382    sPriv->driverPrivate = NULL;
 383    sPriv->extensions = NULL;
 384 }
 385
 386 static void
 387 dri_postprocessing_init(struct dri_screen *screen)
 388 {
 389    unsigned i;
 390
 391    for (i = 0; i < PP_FILTERS; i++) {
 392       screen->pp_enabled[i] = driQueryOptioni(&screen->optionCache,
 393                                               pp_filters[i].name);
 394    }
 395 }
 396
 397 const __DRIconfig **
 398 dri_init_screen_helper(struct dri_screen *screen,
 399                        struct pipe_screen *pscreen,
 400                        const char* driver_name)
 401 {
 402    screen->base.screen = pscreen;
 403    if (!screen->base.screen) {
 404       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 405       return NULL;
 406    }
 407
 408    screen->base.get_egl_image = dri_get_egl_image;
 409    screen->base.get_param = dri_get_param;
 410
 411    screen->st_api = st_gl_api_create();
 412    if (!screen->st_api)
 413       return NULL;
 414
 415    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
 416       screen->target = PIPE_TEXTURE_2D;
 417    else
 418       screen->target = PIPE_TEXTURE_RECT;
 419
 420    driParseOptionInfo(&screen->optionCacheDefaults, gallium_config_options.xml);
 421
 422    driParseConfigFiles(&screen->optionCache,
 423                        &screen->optionCacheDefaults,
 424                        screen->sPriv->myNum,
 425                        driver_name);
 426
 427    dri_fill_st_options(&screen->options, &screen->optionCache);
 428
 429    /* Handle force_s3tc_enable. */
 430    if (!util_format_s3tc_enabled && screen->options.force_s3tc_enable) {
 431       /* Ensure libtxc_dxtn has been loaded if available.
 432        * Forcing S3TC on before calling this would prevent loading
 433        * the library.
 434        * This is just a precaution, the driver should have called it
 435        * already.
 436        */
 437       util_format_s3tc_init();
 438
 439       util_format_s3tc_enabled = TRUE;
 440    }
 441
 442    dri_postprocessing_init(screen);
 443
 444    screen->st_api->query_versions(screen->st_api, &screen->base,
 445                                   &screen->options,
 446                                   &screen->sPriv->max_gl_core_version,
 447                                   &screen->sPriv->max_gl_compat_version,
 448                                   &screen->sPriv->max_gl_es1_version,
 449                                   &screen->sPriv->max_gl_es2_version);
 450
 451    return dri_fill_in_modes(screen);
 452 }
 453
 454 /* vim: set sw=3 ts=8 sts=3 expandtab: */