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"),
   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,
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  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    InitTilesTable();
  40    fprintf(stderr, "(using: builtin).\n");
  41 #else
  42    char filename[256] = { 0 };
  43    sprintf(filename, "%sswr%s%s", UTIL_DL_PREFIX, arch, UTIL_DL_EXT);
  44
  45    screen->pLibrary = util_dl_open(filename);
  46    if (!screen->pLibrary) {
  47       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
  48       return false;
  49    }
  50
  51    util_dl_proc pApiProc = util_dl_get_proc_address(screen->pLibrary,
  52       "SwrGetInterface");
  53    util_dl_proc pInitFunc = util_dl_get_proc_address(screen->pLibrary,
  54       "InitTilesTable");
  55    if (!pApiProc || !pInitFunc) {
  56       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
  57       util_dl_close(screen->pLibrary);
  58       screen->pLibrary = NULL;
  59       return false;
  60    }
  61
  62    screen->pfnSwrGetInterface = (PFNSwrGetInterface)pApiProc;
  63    pInitFunc();
  64
  65    fprintf(stderr, "(using: %s).\n", filename);
  66 #endif
  67    return true;
  68 }
  69
  70
  71 struct pipe_screen *
  72 swr_create_screen(struct sw_winsys *winsys)
  73 {
  74    struct pipe_screen *p_screen = swr_create_screen_internal(winsys);
  75    if (!p_screen) {
  76       return NULL;
  77    }
  78
  79    struct swr_screen *screen = swr_screen(p_screen);
  80    screen->is_knl = false;
  81
  82    util_cpu_detect();
  83
  84    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512er) {
  85       fprintf(stderr, "SWR detected KNL instruction support ");
  86 #ifndef HAVE_SWR_KNL
  87       fprintf(stderr, "(skipping: not built).\n");
  88 #else
  89       if (swr_initialize_screen_interface(screen, "KNL")) {
  90          screen->is_knl = true;
  91          return p_screen;
  92       }
  93 #endif
  94    }
  95
  96    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512bw) {
  97       fprintf(stderr, "SWR detected SKX instruction support ");
  98 #ifndef HAVE_SWR_SKX
  99       fprintf(stderr, "(skipping not built).\n");
 100 #else
 101       if (swr_initialize_screen_interface(screen, "SKX"))
 102          return p_screen;
 103 #endif
 104    }
 105
 106    if (util_cpu_caps.has_avx2) {
 107       fprintf(stderr, "SWR detected AVX2 instruction support ");
 108 #ifndef HAVE_SWR_AVX2
 109       fprintf(stderr, "(skipping not built).\n");
 110 #else
 111       if (swr_initialize_screen_interface(screen, "AVX2"))
 112          return p_screen;
 113 #endif
 114    }
 115
 116    if (util_cpu_caps.has_avx) {
 117       fprintf(stderr, "SWR detected AVX instruction support ");
 118 #ifndef HAVE_SWR_AVX
 119       fprintf(stderr, "(skipping not built).\n");
 120 #else
 121       if (swr_initialize_screen_interface(screen, "AVX"))
 122          return p_screen;
 123 #endif
 124    }
 125
 126    fprintf(stderr, "SWR could not initialize a supported CPU architecture.\n");
 127    swr_destroy_screen_internal(&screen);
 128
 129    return NULL;
 130 }
 131
 132
 133 #ifdef _WIN32
 134 // swap function called from libl_gdi.c
 135
 136 void
 137 swr_gdi_swap(struct pipe_screen *screen,
 138              struct pipe_resource *res,
 139              void *hDC)
 140 {
 141    screen->flush_frontbuffer(screen,
 142                              res,
 143                              0, 0,
 144                              hDC,
 145                              NULL);
 146 }
 147
 148 #endif /* _WIN32 */