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      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 (at) vmware.com>
     29  * Author: Jakob Bornecrantz <wallbraker (at) gmail.com>
     30  */
     31 
     32 #include "utils.h"
     33 
     34 #include "dri_screen.h"
     35 #include "dri_context.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, 2 },
     53    .xml = gallium_driinfo_xml,
     54    .getXml = pipe_loader_get_driinfo_xml
     55 };
     56 
     57 #define false 0
     58 
     59 static void
     60 dri_fill_st_options(struct dri_screen *screen)
     61 {
     62    struct st_config_options *options = &screen->options;
     63    const struct driOptionCache *optionCache = &screen->dev->option_cache;
     64 
     65    options->disable_blend_func_extended =
     66       driQueryOptionb(optionCache, "disable_blend_func_extended");
     67    options->disable_glsl_line_continuations =
     68       driQueryOptionb(optionCache, "disable_glsl_line_continuations");
     69    options->disable_shader_bit_encoding =
     70       driQueryOptionb(optionCache, "disable_shader_bit_encoding");
     71    options->force_glsl_extensions_warn =
     72       driQueryOptionb(optionCache, "force_glsl_extensions_warn");
     73    options->force_glsl_version =
     74       driQueryOptioni(optionCache, "force_glsl_version");
     75    options->allow_glsl_extension_directive_midshader =
     76       driQueryOptionb(optionCache, "allow_glsl_extension_directive_midshader");
     77    options->allow_glsl_builtin_variable_redeclaration =
     78       driQueryOptionb(optionCache, "allow_glsl_builtin_variable_redeclaration");
     79    options->allow_higher_compat_version =
     80       driQueryOptionb(optionCache, "allow_higher_compat_version");
     81    options->glsl_zero_init = driQueryOptionb(optionCache, "glsl_zero_init");
     82    options->force_glsl_abs_sqrt =
     83       driQueryOptionb(optionCache, "force_glsl_abs_sqrt");
     84    options->allow_glsl_cross_stage_interpolation_mismatch =
     85       driQueryOptionb(optionCache, "allow_glsl_cross_stage_interpolation_mismatch");
     86 
     87    driComputeOptionsSha1(optionCache, options->config_options_sha1);
     88 }
     89 
     90 static unsigned
     91 dri_loader_get_cap(struct dri_screen *screen, enum dri_loader_cap cap)
     92 {
     93    const __DRIdri2LoaderExtension *dri2_loader = screen->sPriv->dri2.loader;
     94    const __DRIimageLoaderExtension *image_loader = screen->sPriv->image.loader;
     95 
     96    if (dri2_loader && dri2_loader->base.version >= 4 &&
     97        dri2_loader->getCapability)
     98       return dri2_loader->getCapability(screen->sPriv->loaderPrivate, cap);
     99 
    100    if (image_loader && image_loader->base.version >= 2 &&
    101        image_loader->getCapability)
    102       return image_loader->getCapability(screen->sPriv->loaderPrivate, cap);
    103 
    104    return 0;
    105 }
    106 
    107 static const __DRIconfig **
    108 dri_fill_in_modes(struct dri_screen *screen)
    109 {
    110    static const mesa_format mesa_formats[] = {
    111       MESA_FORMAT_B10G10R10A2_UNORM,
    112       MESA_FORMAT_B10G10R10X2_UNORM,
    113       MESA_FORMAT_B8G8R8A8_UNORM,
    114       MESA_FORMAT_B8G8R8X8_UNORM,
    115       MESA_FORMAT_B8G8R8A8_SRGB,
    116       MESA_FORMAT_B8G8R8X8_SRGB,
    117       MESA_FORMAT_B5G6R5_UNORM,
    118 
    119       /* The 32-bit RGBA format must not precede the 32-bit BGRA format.
    120        * Likewise for RGBX and BGRX.  Otherwise, the GLX client and the GLX
    121        * server may disagree on which format the GLXFBConfig represents,
    122        * resulting in swapped color channels.
    123        *
    124        * The problem, as of 2017-05-30:
    125        * When matching a GLXFBConfig to a __DRIconfig, GLX ignores the channel
    126        * order and chooses the first __DRIconfig with the expected channel
    127        * sizes. Specifically, GLX compares the GLXFBConfig's and __DRIconfig's
    128        * __DRI_ATTRIB_{CHANNEL}_SIZE but ignores __DRI_ATTRIB_{CHANNEL}_MASK.
    129        *
    130        * EGL does not suffer from this problem. It correctly compares the
    131        * channel masks when matching EGLConfig to __DRIconfig.
    132        */
    133 
    134       /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
    135       MESA_FORMAT_R8G8B8A8_UNORM,
    136 
    137       /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
    138       MESA_FORMAT_R8G8B8X8_UNORM,
    139    };
    140    static const enum pipe_format pipe_formats[] = {
    141       PIPE_FORMAT_B10G10R10A2_UNORM,
    142       PIPE_FORMAT_B10G10R10X2_UNORM,
    143       PIPE_FORMAT_BGRA8888_UNORM,
    144       PIPE_FORMAT_BGRX8888_UNORM,
    145       PIPE_FORMAT_BGRA8888_SRGB,
    146       PIPE_FORMAT_BGRX8888_SRGB,
    147       PIPE_FORMAT_B5G6R5_UNORM,
    148       PIPE_FORMAT_RGBA8888_UNORM,
    149       PIPE_FORMAT_RGBX8888_UNORM,
    150    };
    151    mesa_format format;
    152    __DRIconfig **configs = NULL;
    153    uint8_t depth_bits_array[5];
    154    uint8_t stencil_bits_array[5];
    155    unsigned depth_buffer_factor;
    156    unsigned msaa_samples_max;
    157    unsigned i;
    158    struct pipe_screen *p_screen = screen->base.screen;
    159    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
    160    boolean mixed_color_depth;
    161    boolean allow_rgb10;
    162 
    163    static const GLenum back_buffer_modes[] = {
    164       __DRI_ATTRIB_SWAP_NONE, __DRI_ATTRIB_SWAP_UNDEFINED,
    165       __DRI_ATTRIB_SWAP_COPY
    166    };
    167 
    168    if (driQueryOptionb(&screen->dev->option_cache, "always_have_depth_buffer")) {
    169       /* all visuals will have a depth buffer */
    170       depth_buffer_factor = 0;
    171    }
    172    else {
    173       depth_bits_array[0] = 0;
    174       stencil_bits_array[0] = 0;
    175       depth_buffer_factor = 1;
    176    }
    177 
    178    allow_rgb10 = driQueryOptionb(&screen->dev->option_cache, "allow_rgb10_configs");
    179 
    180    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
    181       ? MSAA_VISUAL_MAX_SAMPLES : 1;
    182 
    183    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
    184 					    PIPE_TEXTURE_2D, 0,
    185                                             PIPE_BIND_DEPTH_STENCIL);
    186    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
    187 					    PIPE_TEXTURE_2D, 0,
    188                                             PIPE_BIND_DEPTH_STENCIL);
    189    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
    190 					    PIPE_TEXTURE_2D, 0,
    191                                             PIPE_BIND_DEPTH_STENCIL);
    192    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
    193 					    PIPE_TEXTURE_2D, 0,
    194                                             PIPE_BIND_DEPTH_STENCIL);
    195    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
    196                                           PIPE_TEXTURE_2D, 0,
    197                                           PIPE_BIND_DEPTH_STENCIL);
    198    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
    199                                           PIPE_TEXTURE_2D, 0,
    200                                           PIPE_BIND_DEPTH_STENCIL);
    201 
    202    if (pf_z16) {
    203       depth_bits_array[depth_buffer_factor] = 16;
    204       stencil_bits_array[depth_buffer_factor++] = 0;
    205    }
    206    if (pf_x8z24 || pf_z24x8) {
    207       depth_bits_array[depth_buffer_factor] = 24;
    208       stencil_bits_array[depth_buffer_factor++] = 0;
    209       screen->d_depth_bits_last = pf_x8z24;
    210    }
    211    if (pf_s8z24 || pf_z24s8) {
    212       depth_bits_array[depth_buffer_factor] = 24;
    213       stencil_bits_array[depth_buffer_factor++] = 8;
    214       screen->sd_depth_bits_last = pf_s8z24;
    215    }
    216    if (pf_z32) {
    217       depth_bits_array[depth_buffer_factor] = 32;
    218       stencil_bits_array[depth_buffer_factor++] = 0;
    219    }
    220 
    221    mixed_color_depth =
    222       p_screen->get_param(p_screen, PIPE_CAP_MIXED_COLOR_DEPTH_BITS);
    223 
    224    assert(ARRAY_SIZE(mesa_formats) == ARRAY_SIZE(pipe_formats));
    225 
    226    /* Expose only BGRA ordering if the loader doesn't support RGBA ordering. */
    227    unsigned num_formats;
    228    if (dri_loader_get_cap(screen, DRI_LOADER_CAP_RGBA_ORDERING))
    229       num_formats = ARRAY_SIZE(mesa_formats);
    230    else
    231       num_formats = ARRAY_SIZE(mesa_formats) - 2; /* all - RGBA_ORDERING formats */
    232 
    233    /* Add configs. */
    234    for (format = 0; format < num_formats; format++) {
    235       __DRIconfig **new_configs = NULL;
    236       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
    237       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
    238 
    239       if (!allow_rgb10 &&
    240           (mesa_formats[format] == MESA_FORMAT_B10G10R10A2_UNORM ||
    241            mesa_formats[format] == MESA_FORMAT_B10G10R10X2_UNORM))
    242          continue;
    243 
    244       if (!p_screen->is_format_supported(p_screen, pipe_formats[format],
    245                                          PIPE_TEXTURE_2D, 0,
    246                                          PIPE_BIND_RENDER_TARGET))
    247          continue;
    248 
    249       for (i = 1; i <= msaa_samples_max; i++) {
    250          int samples = i > 1 ? i : 0;
    251 
    252          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
    253                                            PIPE_TEXTURE_2D, samples,
    254                                            PIPE_BIND_RENDER_TARGET)) {
    255             msaa_modes[num_msaa_modes++] = samples;
    256          }
    257       }
    258 
    259       if (num_msaa_modes) {
    260          /* Single-sample configs with an accumulation buffer. */
    261          new_configs = driCreateConfigs(mesa_formats[format],
    262                                         depth_bits_array, stencil_bits_array,
    263                                         depth_buffer_factor, back_buffer_modes,
    264                                         ARRAY_SIZE(back_buffer_modes),
    265                                         msaa_modes, 1,
    266                                         GL_TRUE, !mixed_color_depth);
    267          configs = driConcatConfigs(configs, new_configs);
    268 
    269          /* Multi-sample configs without an accumulation buffer. */
    270          if (num_msaa_modes > 1) {
    271             new_configs = driCreateConfigs(mesa_formats[format],
    272                                            depth_bits_array, stencil_bits_array,
    273                                            depth_buffer_factor, back_buffer_modes,
    274                                            ARRAY_SIZE(back_buffer_modes),
    275                                            msaa_modes+1, num_msaa_modes-1,
    276                                            GL_FALSE, !mixed_color_depth);
    277             configs = driConcatConfigs(configs, new_configs);
    278          }
    279       }
    280    }
    281 
    282    if (configs == NULL) {
    283       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
    284       return NULL;
    285    }
    286 
    287    return (const __DRIconfig **)configs;
    288 }
    289 
    290 /**
    291  * Roughly the converse of dri_fill_in_modes.
    292  */
    293 void
    294 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
    295                    const struct gl_config *mode)
    296 {
    297    memset(stvis, 0, sizeof(*stvis));
    298 
    299    if (!mode)
    300       return;
    301 
    302    /* Deduce the color format. */
    303    switch (mode->redMask) {
    304    case 0x3FF00000:
    305       if (mode->alphaMask) {
    306          assert(mode->alphaMask == 0xC0000000);
    307          stvis->color_format = PIPE_FORMAT_B10G10R10A2_UNORM;
    308       } else {
    309          stvis->color_format = PIPE_FORMAT_B10G10R10X2_UNORM;
    310       }
    311       break;
    312 
    313    case 0x00FF0000:
    314       if (mode->alphaMask) {
    315          assert(mode->alphaMask == 0xFF000000);
    316          stvis->color_format = mode->sRGBCapable ?
    317                                   PIPE_FORMAT_BGRA8888_SRGB :
    318                                   PIPE_FORMAT_BGRA8888_UNORM;
    319       } else {
    320          stvis->color_format = mode->sRGBCapable ?
    321                                   PIPE_FORMAT_BGRX8888_SRGB :
    322                                   PIPE_FORMAT_BGRX8888_UNORM;
    323       }
    324       break;
    325 
    326    case 0x000000FF:
    327       if (mode->alphaMask) {
    328          assert(mode->alphaMask == 0xFF000000);
    329          stvis->color_format = mode->sRGBCapable ?
    330                                   PIPE_FORMAT_RGBA8888_SRGB :
    331                                   PIPE_FORMAT_RGBA8888_UNORM;
    332       } else {
    333          stvis->color_format = mode->sRGBCapable ?
    334                                   PIPE_FORMAT_RGBX8888_SRGB :
    335                                   PIPE_FORMAT_RGBX8888_UNORM;
    336       }
    337       break;
    338 
    339    case 0x0000F800:
    340       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
    341       break;
    342 
    343    default:
    344       assert(!"unsupported visual: invalid red mask");
    345       return;
    346    }
    347 
    348    if (mode->sampleBuffers) {
    349       stvis->samples = mode->samples;
    350    }
    351 
    352    switch (mode->depthBits) {
    353    default:
    354    case 0:
    355       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
    356       break;
    357    case 16:
    358       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
    359       break;
    360    case 24:
    361       if (mode->stencilBits == 0) {
    362 	 stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
    363                                           PIPE_FORMAT_Z24X8_UNORM:
    364                                           PIPE_FORMAT_X8Z24_UNORM;
    365       } else {
    366 	 stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
    367                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
    368                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
    369       }
    370       break;
    371    case 32:
    372       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
    373       break;
    374    }
    375 
    376    stvis->accum_format = (mode->haveAccumBuffer) ?
    377       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
    378 
    379    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
    380    stvis->render_buffer = ST_ATTACHMENT_FRONT_LEFT;
    381    if (mode->doubleBufferMode) {
    382       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
    383       stvis->render_buffer = ST_ATTACHMENT_BACK_LEFT;
    384    }
    385    if (mode->stereoMode) {
    386       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
    387       if (mode->doubleBufferMode)
    388          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
    389    }
    390 
    391    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
    392       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
    393    /* let the state tracker allocate the accum buffer */
    394 }
    395 
    396 static boolean
    397 dri_get_egl_image(struct st_manager *smapi,
    398                   void *egl_image,
    399                   struct st_egl_image *stimg)
    400 {
    401    struct dri_screen *screen = (struct dri_screen *)smapi;
    402    __DRIimage *img = NULL;
    403 
    404    if (screen->lookup_egl_image) {
    405       img = screen->lookup_egl_image(screen, egl_image);
    406    }
    407 
    408    if (!img)
    409       return FALSE;
    410 
    411    stimg->texture = NULL;
    412    pipe_resource_reference(&stimg->texture, img->texture);
    413    switch (img->dri_components) {
    414    case __DRI_IMAGE_COMPONENTS_Y_U_V:
    415       stimg->format = PIPE_FORMAT_IYUV;
    416       break;
    417    case __DRI_IMAGE_COMPONENTS_Y_UV:
    418       stimg->format = PIPE_FORMAT_NV12;
    419       break;
    420    default:
    421       stimg->format = img->texture->format;
    422       break;
    423    }
    424    stimg->level = img->level;
    425    stimg->layer = img->layer;
    426 
    427    return TRUE;
    428 }
    429 
    430 static int
    431 dri_get_param(struct st_manager *smapi,
    432               enum st_manager_param param)
    433 {
    434    struct dri_screen *screen = (struct dri_screen *)smapi;
    435 
    436    switch(param) {
    437    case ST_MANAGER_BROKEN_INVALIDATE:
    438       return screen->broken_invalidate;
    439    default:
    440       return 0;
    441    }
    442 }
    443 
    444 void
    445 dri_destroy_screen_helper(struct dri_screen * screen)
    446 {
    447    if (screen->base.destroy)
    448       screen->base.destroy(&screen->base);
    449 
    450    if (screen->st_api && screen->st_api->destroy)
    451       screen->st_api->destroy(screen->st_api);
    452 
    453    if (screen->base.screen)
    454       screen->base.screen->destroy(screen->base.screen);
    455 
    456    mtx_destroy(&screen->opencl_func_mutex);
    457 }
    458 
    459 void
    460 dri_destroy_screen(__DRIscreen * sPriv)
    461 {
    462    struct dri_screen *screen = dri_screen(sPriv);
    463 
    464    dri_destroy_screen_helper(screen);
    465 
    466    pipe_loader_release(&screen->dev, 1);
    467 
    468    free(screen);
    469    sPriv->driverPrivate = NULL;
    470    sPriv->extensions = NULL;
    471 }
    472 
    473 static void
    474 dri_postprocessing_init(struct dri_screen *screen)
    475 {
    476    unsigned i;
    477 
    478    for (i = 0; i < PP_FILTERS; i++) {
    479       screen->pp_enabled[i] = driQueryOptioni(&screen->dev->option_cache,
    480                                               pp_filters[i].name);
    481    }
    482 }
    483 
    484 static void
    485 dri_set_background_context(struct st_context_iface *st,
    486                            struct util_queue_monitoring *queue_info)
    487 {
    488    struct dri_context *ctx = (struct dri_context *)st->st_manager_private;
    489    const __DRIbackgroundCallableExtension *backgroundCallable =
    490       ctx->sPriv->dri2.backgroundCallable;
    491 
    492    /* Note: Mesa will only call this function if GL multithreading is enabled
    493     * We only do that if the loader exposed the __DRI_BACKGROUND_CALLABLE
    494     * extension. So we know that backgroundCallable is not NULL.
    495     */
    496    assert(backgroundCallable);
    497    backgroundCallable->setBackgroundContext(ctx->cPriv->loaderPrivate);
    498 
    499    if (ctx->hud)
    500       hud_add_queue_for_monitoring(ctx->hud, queue_info);
    501 }
    502 
    503 void
    504 dri_init_options(struct dri_screen *screen)
    505 {
    506    pipe_loader_load_options(screen->dev);
    507 
    508    dri_fill_st_options(screen);
    509 }
    510 
    511 const __DRIconfig **
    512 dri_init_screen_helper(struct dri_screen *screen,
    513                        struct pipe_screen *pscreen)
    514 {
    515    screen->base.screen = pscreen;
    516    screen->base.get_egl_image = dri_get_egl_image;
    517    screen->base.get_param = dri_get_param;
    518    screen->base.set_background_context = dri_set_background_context;
    519 
    520    screen->st_api = st_gl_api_create();
    521    if (!screen->st_api)
    522       return NULL;
    523 
    524    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
    525       screen->target = PIPE_TEXTURE_2D;
    526    else
    527       screen->target = PIPE_TEXTURE_RECT;
    528 
    529    dri_postprocessing_init(screen);
    530 
    531    screen->st_api->query_versions(screen->st_api, &screen->base,
    532                                   &screen->options,
    533                                   &screen->sPriv->max_gl_core_version,
    534                                   &screen->sPriv->max_gl_compat_version,
    535                                   &screen->sPriv->max_gl_es1_version,
    536                                   &screen->sPriv->max_gl_es2_version);
    537 
    538    return dri_fill_in_modes(screen);
    539 }
    540 
    541 /* vim: set sw=3 ts=8 sts=3 expandtab: */
    542