1 // Copyright 2018 The SwiftShader Authors. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "VkShaderModule.hpp"
16
17 #include "spirv-tools/libspirv.hpp"
18
19 #include <cstring>
20
21 namespace vk {
22
23 std::atomic<uint32_t> ShaderModule::serialCounter(1); // Start at 1, 0 is invalid shader.
24
ShaderModule(const VkShaderModuleCreateInfo * pCreateInfo,void * mem)25 ShaderModule::ShaderModule(const VkShaderModuleCreateInfo *pCreateInfo, void *mem)
26 : serialID(nextSerialID())
27 , code(reinterpret_cast<uint32_t *>(mem))
28 {
29 memcpy(code, pCreateInfo->pCode, pCreateInfo->codeSize);
30 wordCount = static_cast<uint32_t>(pCreateInfo->codeSize / sizeof(uint32_t));
31
32 #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
33 spvtools::SpirvTools spirvTools(SPIRV_VERSION);
34 spvtools::ValidatorOptions validatorOptions = {};
35 validatorOptions.SetScalarBlockLayout(true); // VK_EXT_scalar_block_layout
36 validatorOptions.SetUniformBufferStandardLayout(true); // VK_KHR_uniform_buffer_standard_layout
37
38 ASSERT(spirvTools.Validate(code, wordCount, validatorOptions)); // The SPIR-V code passed to vkCreateShaderModule must be valid (b/158228522)
39 #endif
40 }
41
destroy(const VkAllocationCallbacks * pAllocator)42 void ShaderModule::destroy(const VkAllocationCallbacks *pAllocator)
43 {
44 vk::deallocate(code, pAllocator);
45 }
46
ComputeRequiredAllocationSize(const VkShaderModuleCreateInfo * pCreateInfo)47 size_t ShaderModule::ComputeRequiredAllocationSize(const VkShaderModuleCreateInfo *pCreateInfo)
48 {
49 return pCreateInfo->codeSize;
50 }
51
52 } // namespace vk
53