src/gallium/drivers/swr/swr_loader.cpp

   1 /****************************************************************************
   2  * Copyright (C) 2016 Intel Corporation.   All Rights Reserved.
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   4  * Permission is hereby granted, free of charge, to any person obtaining a
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  13  * Software.
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  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->pfnSwrGetInterface = SwrGetTileInterface;
  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 */