52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2019 Danny Robson <danny@nerdcruft.net>
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*/
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#include "load/vtable.hpp"
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#include "load/vendor.hpp"
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#include <vector>
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///////////////////////////////////////////////////////////////////////////////
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// We need to ensure the tables are loaded before anything much gets called.
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//
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// Given we have a global vtable we'll install a default table that hooks the
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// function(s) that a client will call first off. This function will:
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// * find the various ICDs on the system,
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// * install a vtable that forwards calls by default,
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// * and then forwards the current call on to this newly installed vtable
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///////////////////////////////////////////////////////////////////////////////
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static void setup_tables (void)
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{
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static auto libraries = cruft::vk::load::enumerate ();
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static cruft::vk::load::vendor v (libraries[0]);
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cruft::vk::load::v_table = &v.vtable;
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}
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///////////////////////////////////////////////////////////////////////////////
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static void*
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_vk_icdGetInstanceProcAddr (VkInstance instance, char const *name)
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{
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setup_tables ();
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return cruft::vk::load::v_table->vk_icdGetInstanceProcAddr (instance, name);
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}
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///////////////////////////////////////////////////////////////////////////////
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static cruft::vk::load::vendor_table const v_initialiser {
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.vk_icdGetInstanceProcAddr = _vk_icdGetInstanceProcAddr,
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};
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cruft::vk::load::vendor_table const *cruft::vk::load::v_table = &v_initialiser;
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