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 "util/u_cpu_detect.h"
  25 #include "util/u_dl.h"
  26 #include "swr_public.h"
  27 #include "swr_screen.h"
  28
  29 #include <stdio.h>
  30
  31 // Helper function to resolve the backend filename based on architecture
  32 static bool
  33 swr_initialize_screen_interface(struct swr_screen *screen, const char arch[])
  34 {
  35 #ifdef HAVE_SWR_BUILTIN
  36    screen->pLibrary = NULL;
  37    screen->pfnSwrGetInterface = SwrGetInterface;
  38    fprintf(stderr, "(using: builtin).\n");
  39 #else
  40    char filename[256] = { 0 };
  41    sprintf(filename, "%sswr%s%s", UTIL_DL_PREFIX, arch, UTIL_DL_EXT);
  42
  43    screen->pLibrary = util_dl_open(filename);
  44    if (!screen->pLibrary) {
  45       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
  46       return false;
  47    }
  48
  49    util_dl_proc pApiProc = util_dl_get_proc_address(screen->pLibrary,
  50       "SwrGetInterface");
  51    if (!pApiProc) {
  52       fprintf(stderr, "(skipping: %s).\n", util_dl_error());
  53       util_dl_close(screen->pLibrary);
  54       screen->pLibrary = NULL;
  55       return false;
  56    }
  57
  58    screen->pfnSwrGetInterface = (PFNSwrGetInterface)pApiProc;
  59    fprintf(stderr, "(using: %s).\n", filename);
  60 #endif
  61    return true;
  62 }
  63
  64
  65 struct pipe_screen *
  66 swr_create_screen(struct sw_winsys *winsys)
  67 {
  68    struct pipe_screen *p_screen = swr_create_screen_internal(winsys);
  69    if (!p_screen) {
  70       return NULL;
  71    }
  72
  73    struct swr_screen *screen = swr_screen(p_screen);
  74    screen->is_knl = false;
  75
  76    util_cpu_detect();
  77
  78    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512er) {
  79       fprintf(stderr, "SWR detected KNL instruction support ");
  80 #ifndef HAVE_SWR_KNL
  81       fprintf(stderr, "(skipping: not built).\n");
  82 #else
  83       if (swr_initialize_screen_interface(screen, "KNL")) {
  84          screen->is_knl = true;
  85          return p_screen;
  86       }
  87 #endif
  88    }
  89
  90    if (util_cpu_caps.has_avx512f && util_cpu_caps.has_avx512bw) {
  91       fprintf(stderr, "SWR detected SKX instruction support ");
  92 #ifndef HAVE_SWR_SKX
  93       fprintf(stderr, "(skipping not built).\n");
  94 #else
  95       if (swr_initialize_screen_interface(screen, "SKX"))
  96          return p_screen;
  97 #endif
  98    }
  99
 100    if (util_cpu_caps.has_avx2) {
 101       fprintf(stderr, "SWR detected AVX2 instruction support ");
 102 #ifndef HAVE_SWR_AVX2
 103       fprintf(stderr, "(skipping not built).\n");
 104 #else
 105       if (swr_initialize_screen_interface(screen, "AVX2"))
 106          return p_screen;
 107 #endif
 108    }
 109
 110    if (util_cpu_caps.has_avx) {
 111       fprintf(stderr, "SWR detected AVX instruction support ");
 112 #ifndef HAVE_SWR_AVX
 113       fprintf(stderr, "(skipping not built).\n");
 114 #else
 115       if (swr_initialize_screen_interface(screen, "AVX"))
 116          return p_screen;
 117 #endif
 118    }
 119
 120    fprintf(stderr, "SWR could not initialize a supported CPU architecture.\n");
 121    swr_destroy_screen_internal(&screen);
 122
 123    return NULL;
 124 }
 125
 126
 127 #ifdef _WIN32
 128 // swap function called from libl_gdi.c
 129
 130 void
 131 swr_gdi_swap(struct pipe_screen *screen,
 132              struct pipe_resource *res,
 133              void *hDC)
 134 {
 135    screen->flush_frontbuffer(screen,
 136                              res,
 137                              0, 0,
 138                              hDC,
 139                              NULL);
 140 }
 141
 142 #endif /* _WIN32 */