mirror of
https://github.com/ZDoom/gzdoom-gles.git
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c6b29846d0
- add stubs for a vulkan hw renderer backend - add RAII wrappers for vulkan object types - add builder classes to isolate vulkan boilerplate code - add a swap chain class
165 lines
4.8 KiB
C++
165 lines
4.8 KiB
C++
//
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// Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#define SH_EXPORTING
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#include <cassert>
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#include "InitializeDll.h"
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#include "../glslang/Include/InitializeGlobals.h"
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#include "../glslang/Public/ShaderLang.h"
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#include "../glslang/Include/PoolAlloc.h"
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namespace glslang {
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OS_TLSIndex ThreadInitializeIndex = OS_INVALID_TLS_INDEX;
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// Per-process initialization.
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// Needs to be called at least once before parsing, etc. is done.
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// Will also do thread initialization for the calling thread; other
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// threads will need to do that explicitly.
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bool InitProcess()
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{
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glslang::GetGlobalLock();
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if (ThreadInitializeIndex != OS_INVALID_TLS_INDEX) {
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//
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// Function is re-entrant.
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//
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glslang::ReleaseGlobalLock();
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return true;
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}
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ThreadInitializeIndex = OS_AllocTLSIndex();
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if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) {
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assert(0 && "InitProcess(): Failed to allocate TLS area for init flag");
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glslang::ReleaseGlobalLock();
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return false;
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}
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if (! InitializePoolIndex()) {
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assert(0 && "InitProcess(): Failed to initialize global pool");
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glslang::ReleaseGlobalLock();
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return false;
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}
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if (! InitThread()) {
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assert(0 && "InitProcess(): Failed to initialize thread");
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glslang::ReleaseGlobalLock();
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return false;
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}
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glslang::ReleaseGlobalLock();
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return true;
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}
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// Per-thread scoped initialization.
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// Must be called at least once by each new thread sharing the
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// symbol tables, etc., needed to parse.
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bool InitThread()
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{
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//
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// This function is re-entrant
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//
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if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) {
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assert(0 && "InitThread(): Process hasn't been initalised.");
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return false;
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}
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if (OS_GetTLSValue(ThreadInitializeIndex) != 0)
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return true;
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if (! OS_SetTLSValue(ThreadInitializeIndex, (void *)1)) {
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assert(0 && "InitThread(): Unable to set init flag.");
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return false;
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}
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glslang::SetThreadPoolAllocator(nullptr);
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return true;
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}
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// Not necessary to call this: InitThread() is reentrant, and the need
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// to do per thread tear down has been removed.
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//
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// This is kept, with memory management removed, to satisfy any exiting
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// calls to it that rely on it.
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bool DetachThread()
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{
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bool success = true;
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if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX)
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return true;
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//
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// Function is re-entrant and this thread may not have been initialized.
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//
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if (OS_GetTLSValue(ThreadInitializeIndex) != 0) {
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if (!OS_SetTLSValue(ThreadInitializeIndex, (void *)0)) {
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assert(0 && "DetachThread(): Unable to clear init flag.");
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success = false;
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}
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}
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return success;
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}
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// Not necessary to call this: InitProcess() is reentrant.
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//
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// This is kept, with memory management removed, to satisfy any exiting
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// calls to it that rely on it.
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//
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// Users of glslang should call shFinalize() or glslang::FinalizeProcess() for
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// process-scoped memory tear down.
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bool DetachProcess()
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{
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bool success = true;
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if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX)
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return true;
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success = DetachThread();
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OS_FreeTLSIndex(ThreadInitializeIndex);
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ThreadInitializeIndex = OS_INVALID_TLS_INDEX;
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return success;
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}
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} // end namespace glslang
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