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Member "mesa-20.1.8/src/gallium/drivers/swr/swr_loader.cpp" (16 Sep 2020, 5002 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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    1 /****************************************************************************
    2  * Copyright (C) 2016 Intel Corporation.   All Rights Reserved.
    3  *
    4  * Permission is hereby granted, free of charge, to any person obtaining a
    5  * copy of this software and associated documentation files (the "Software"),
    6  * to deal in the Software without restriction, including without limitation
    7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    8  * and/or sell copies of the Software, and to permit persons to whom the
    9  * Software is furnished to do so, subject to the following conditions:
   10  *
   11  * The above copyright notice and this permission notice (including the next
   12  * paragraph) shall be included in all copies or substantial portions of the
   13  * Software.
   14  *
   15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   21  * IN THE SOFTWARE.
   22  ***************************************************************************/
   23 
   24 #include "memory/InitMemory.h"
   25 #include "util/u_cpu_detect.h"
   26 #include "util/u_dl.h"
   27 #include "swr_public.h"
   28 #include "swr_screen.h"
   29 
   30 #include <stdio.h>
   31 
   32 // Helper function to resolve the backend filename based on architecture
   33 static bool
   34 swr_initialize_screen_interface(struct swr_screen *screen, const char arch[])
   35 {
   36 #ifdef HAVE_SWR_BUILTIN
   37    screen->pLibrary = NULL;
   38    screen->pfnSwrGetInterface = SwrGetInterface;
   39    screen->pfnSwrGetTileInterface = SwrGetTileIterface;
   40    InitTilesTable();
   41    swr_print_info("(using: builtin).\n");
   42 #else
   43    char filename[256] = { 0 };
   44    sprintf(filename, "%sswr%s%s", UTIL_DL_PREFIX, arch, UTIL_DL_EXT);
   45 
   46    screen->pLibrary = util_dl_open(filename);
   47    if (!screen->pLibrary) {
   48       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
   49       return false;
   50    }
   51 
   52    util_dl_proc pApiProc = util_dl_get_proc_address(screen->pLibrary,
   53       "SwrGetInterface");
   54    util_dl_proc pTileApiProc = util_dl_get_proc_address(screen->pLibrary,
   55       "SwrGetTileIterface");
   56    util_dl_proc pInitFunc = util_dl_get_proc_address(screen->pLibrary,
   57       "InitTilesTable");
   58    if (!pApiProc || !pInitFunc || !pTileApiProc) {
   59       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
   60       util_dl_close(screen->pLibrary);
   61       screen->pLibrary = NULL;
   62       return false;
   63    }
   64 
   65    screen->pfnSwrGetInterface = (PFNSwrGetInterface)pApiProc;
   66    screen->pfnSwrGetTileInterface = (PFNSwrGetTileInterface)pTileApiProc;
   67 
   68    SWR_ASSERT(screen->pfnSwrGetInterface != nullptr);
   69    SWR_ASSERT(screen->pfnSwrGetTileInterface != nullptr);
   70    SWR_ASSERT(pInitFunc != nullptr);
   71 
   72    pInitFunc();
   73 
   74    swr_print_info("(using: %s).\n", filename);
   75 #endif
   76 
   77    return true;
   78 }
   79 
   80 
   81 struct pipe_screen *
   82 swr_create_screen(struct sw_winsys *winsys)
   83 {
   84    struct pipe_screen *p_screen = swr_create_screen_internal(winsys);
   85    if (!p_screen) {
   86       return NULL;
   87    }
   88 
   89    struct swr_screen *screen = swr_screen(p_screen);
   90    screen->is_knl = false;
   91 
   92    util_cpu_detect();
   93 
   94    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512er) {
   95       swr_print_info("SWR detected KNL instruction support ");
   96 #ifndef HAVE_SWR_KNL
   97       swr_print_info("(skipping: not built).\n");
   98 #else
   99       if (swr_initialize_screen_interface(screen, "KNL")) {
  100          screen->is_knl = true;
  101          return p_screen;
  102       }
  103 #endif
  104    }
  105 
  106    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512bw) {
  107       swr_print_info("SWR detected SKX instruction support ");
  108 #ifndef HAVE_SWR_SKX
  109       swr_print_info("(skipping not built).\n");
  110 #else
  111       if (swr_initialize_screen_interface(screen, "SKX"))
  112          return p_screen;
  113 #endif
  114    }
  115 
  116    if (util_cpu_caps.has_avx2) {
  117       swr_print_info("SWR detected AVX2 instruction support ");
  118 #ifndef HAVE_SWR_AVX2
  119       swr_print_info("(skipping not built).\n");
  120 #else
  121       if (swr_initialize_screen_interface(screen, "AVX2"))
  122          return p_screen;
  123 #endif
  124    }
  125 
  126    if (util_cpu_caps.has_avx) {
  127       swr_print_info("SWR detected AVX instruction support ");
  128 #ifndef HAVE_SWR_AVX
  129       swr_print_info("(skipping not built).\n");
  130 #else
  131       if (swr_initialize_screen_interface(screen, "AVX"))
  132          return p_screen;
  133 #endif
  134    }
  135 
  136    fprintf(stderr, "SWR could not initialize a supported CPU architecture.\n");
  137    swr_destroy_screen_internal(&screen);
  138 
  139    return NULL;
  140 }
  141 
  142 
  143 #ifdef _WIN32
  144 // swap function called from libl_gdi.c
  145 
  146 void
  147 swr_gdi_swap(struct pipe_screen *screen,
  148              struct pipe_resource *res,
  149              void *hDC)
  150 {
  151    screen->flush_frontbuffer(screen,
  152                              res,
  153                              0, 0,
  154                              hDC,
  155                              NULL);
  156 }
  157 
  158 #endif /* _WIN32 */