src/mesa/drivers/dri/i965/brw_program_binary.c

   1 /*
   2  * Copyright (c) 2017 Intel Corporation
   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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <stdint.h>
  25
  26 #include "util/build_id.h"
  27 #include "util/mesa-sha1.h"
  28
  29 #include "brw_context.h"
  30 #include "brw_program.h"
  31
  32 static uint8_t driver_sha1[20];
  33
  34 void
  35 brw_program_binary_init(unsigned device_id)
  36 {
  37    const struct build_id_note *note =
  38       build_id_find_nhdr_for_addr(brw_program_binary_init);
  39    assert(note);
  40
  41    /**
  42     * With Mesa's megadrivers, taking the sha1 of i965_dri.so may not be
  43     * unique. Therefore, we make a sha1 of the "i965" string and the sha1
  44     * build id from i965_dri.so.
  45     */
  46    struct mesa_sha1 ctx;
  47    _mesa_sha1_init(&ctx);
  48    char renderer[10];
  49    assert(device_id < 0x10000);
  50    int len = snprintf(renderer, sizeof(renderer), "i965_%04x", device_id);
  51    assert(len == sizeof(renderer) - 1);
  52    _mesa_sha1_update(&ctx, renderer, len);
  53    _mesa_sha1_update(&ctx, build_id_data(note), build_id_length(note));
  54    _mesa_sha1_final(&ctx, driver_sha1);
  55 }
  56
  57 void
  58 brw_get_program_binary_driver_sha1(struct gl_context *ctx, uint8_t *sha1)
  59 {
  60    memcpy(sha1, driver_sha1, sizeof(uint8_t) * 20);
  61 }
  62
  63 /* This is just a wrapper around brw_program_deserialize_nir() as i965
  64  * doesn't need gl_shader_program like other drivers do.
  65  */
  66 void
  67 brw_deserialize_program_binary(struct gl_context *ctx,
  68                                struct gl_shader_program *shProg,
  69                                struct gl_program *prog)
  70 {
  71    brw_program_deserialize_nir(ctx, prog, prog->info.stage);
  72 }