mirror of
https://github.com/libretro/glslang.git
synced 2024-12-04 22:27:15 +00:00
10223e886c
Gtest runs in single-threaded mode. So the GlslangInitializer object in the test code doesn't have to do its own synchronization.
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
//
|
|
// Copyright (C) 2016 Google, Inc.
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions
|
|
// are met:
|
|
//
|
|
// Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
//
|
|
// Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
//
|
|
// Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#ifndef GLSLANG_GTESTS_INITIALIZER_H
|
|
#define GLSLANG_GTESTS_INITIALIZER_H
|
|
|
|
#include "glslang/Public/ShaderLang.h"
|
|
|
|
namespace glslangtest {
|
|
|
|
// Initializes glslang on creation, and destroys it on completion.
|
|
// And provides .Acquire() as a way to reinitialize glslang if semantics change.
|
|
// This object is expected to be a singleton, so that internal glslang state
|
|
// can be correctly handled.
|
|
//
|
|
// TODO(antiagainst): It's a known bug that some of the internal states need to
|
|
// be reset if semantics change:
|
|
// https://github.com/KhronosGroup/glslang/issues/166
|
|
// Therefore, the following mechanism is needed. Remove this once the above bug
|
|
// gets fixed.
|
|
class GlslangInitializer {
|
|
public:
|
|
GlslangInitializer() : lastMessages(EShMsgDefault)
|
|
{
|
|
glslang::InitializeProcess();
|
|
}
|
|
|
|
~GlslangInitializer() { glslang::FinalizeProcess(); }
|
|
|
|
// A token indicates that the glslang is reinitialized (if necessary) to the
|
|
// required semantics. And that won't change until the token is destroyed.
|
|
class InitializationToken {
|
|
};
|
|
|
|
// Re-initializes glsl state iff the previous messages and the current
|
|
// messages are incompatible. We assume external synchronization, i.e.
|
|
// there is at most one acquired token at any one time.
|
|
InitializationToken acquire(EShMessages new_messages)
|
|
{
|
|
if ((lastMessages ^ new_messages) &
|
|
(EShMsgVulkanRules | EShMsgSpvRules)) {
|
|
glslang::FinalizeProcess();
|
|
glslang::InitializeProcess();
|
|
}
|
|
lastMessages = new_messages;
|
|
return InitializationToken();
|
|
}
|
|
|
|
private:
|
|
|
|
EShMessages lastMessages;
|
|
};
|
|
|
|
} // namespace glslangtest
|
|
|
|
#endif // GLSLANG_GTESTS_INITIALIZER_H
|