// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "VkShaderModule.hpp"

#include <cstring>

namespace vk
{

std::atomic<uint32_t> ShaderModule::serialCounter(1);    // Start at 1, 0 is invalid shader.

ShaderModule::ShaderModule(const VkShaderModuleCreateInfo* pCreateInfo, void* mem)
	: serialID(nextSerialID()), code(reinterpret_cast<uint32_t*>(mem))
{
	memcpy(code, pCreateInfo->pCode, pCreateInfo->codeSize);
	wordCount = static_cast<uint32_t>(pCreateInfo->codeSize / sizeof(uint32_t));
}

void ShaderModule::destroy(const VkAllocationCallbacks* pAllocator)
{
	vk::deallocate(code, pAllocator);
}

size_t ShaderModule::ComputeRequiredAllocationSize(const VkShaderModuleCreateInfo* pCreateInfo)
{
	return pCreateInfo->codeSize;
}

} // namespace vk