src/gallium/drivers/swr/swr_loader.cpp

   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"),
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  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  *
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  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->pfnSwrGetInterface = SwrGetTileInterface;
  40    InitTilesTable();
  41    fprintf(stderr, "(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    fprintf(stderr, "(using: %s).\n", filename);
  75 #endif
  76    return true;
  77 }
  78
  79
  80 struct pipe_screen *
  81 swr_create_screen(struct sw_winsys *winsys)
  82 {
  83    struct pipe_screen *p_screen = swr_create_screen_internal(winsys);
  84    if (!p_screen) {
  85       return NULL;
  86    }
  87
  88    struct swr_screen *screen = swr_screen(p_screen);
  89    screen->is_knl = false;
  90
  91    util_cpu_detect();
  92
  93    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512er) {
  94       fprintf(stderr, "SWR detected KNL instruction support ");
  95 #ifndef HAVE_SWR_KNL
  96       fprintf(stderr, "(skipping: not built).\n");
  97 #else
  98       if (swr_initialize_screen_interface(screen, "KNL")) {
  99          screen->is_knl = true;
 100          return p_screen;
 101       }
 102 #endif
 103    }
 104
 105    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512bw) {
 106       fprintf(stderr, "SWR detected SKX instruction support ");
 107 #ifndef HAVE_SWR_SKX
 108       fprintf(stderr, "(skipping not built).\n");
 109 #else
 110       if (swr_initialize_screen_interface(screen, "SKX"))
 111          return p_screen;
 112 #endif
 113    }
 114
 115    if (util_cpu_caps.has_avx2) {
 116       fprintf(stderr, "SWR detected AVX2 instruction support ");
 117 #ifndef HAVE_SWR_AVX2
 118       fprintf(stderr, "(skipping not built).\n");
 119 #else
 120       if (swr_initialize_screen_interface(screen, "AVX2"))
 121          return p_screen;
 122 #endif
 123    }
 124
 125    if (util_cpu_caps.has_avx) {
 126       fprintf(stderr, "SWR detected AVX instruction support ");
 127 #ifndef HAVE_SWR_AVX
 128       fprintf(stderr, "(skipping not built).\n");
 129 #else
 130       if (swr_initialize_screen_interface(screen, "AVX"))
 131          return p_screen;
 132 #endif
 133    }
 134
 135    fprintf(stderr, "SWR could not initialize a supported CPU architecture.\n");
 136    swr_destroy_screen_internal(&screen);
 137
 138    return NULL;
 139 }
 140
 141
 142 #ifdef _WIN32
 143 // swap function called from libl_gdi.c
 144
 145 void
 146 swr_gdi_swap(struct pipe_screen *screen,
 147              struct pipe_resource *res,
 148              void *hDC)
 149 {
 150    screen->flush_frontbuffer(screen,
 151                              res,
 152                              0, 0,
 153                              hDC,
 154                              NULL);
 155 }
 156
 157 #endif /* _WIN32 */