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 "VkPipelineLayout.hpp"
16#include <cstring>
17
18namespace vk
19{
20
21PipelineLayout::PipelineLayout(const VkPipelineLayoutCreateInfo* pCreateInfo, void* mem)
22 : setLayoutCount(pCreateInfo->setLayoutCount), pushConstantRangeCount(pCreateInfo->pushConstantRangeCount)
23{
24 char* hostMem = reinterpret_cast<char*>(mem);
25
26 size_t setLayoutsSize = pCreateInfo->setLayoutCount * sizeof(DescriptorSetLayout*);
27 setLayouts = reinterpret_cast<DescriptorSetLayout**>(hostMem);
28 for(uint32_t i = 0; i < pCreateInfo->setLayoutCount; i++)
29 {
30 setLayouts[i] = vk::Cast(pCreateInfo->pSetLayouts[i]);
31 }
32 hostMem += setLayoutsSize;
33
34 size_t pushConstantRangesSize = pCreateInfo->pushConstantRangeCount * sizeof(VkPushConstantRange);
35 pushConstantRanges = reinterpret_cast<VkPushConstantRange*>(hostMem);
36 memcpy(pushConstantRanges, pCreateInfo->pPushConstantRanges, pushConstantRangesSize);
37 hostMem += pushConstantRangesSize;
38
39 dynamicOffsetBases = reinterpret_cast<uint32_t*>(hostMem);
40 uint32_t dynamicOffsetBase = 0;
41 for (uint32_t i = 0; i < setLayoutCount; i++)
42 {
43 uint32_t dynamicDescriptorCount = setLayouts[i]->getDynamicDescriptorCount();
44 ASSERT_OR_RETURN((dynamicOffsetBase + dynamicDescriptorCount) <= MAX_DESCRIPTOR_SET_COMBINED_BUFFERS_DYNAMIC);
45 dynamicOffsetBases[i] = dynamicOffsetBase;
46 dynamicOffsetBase += dynamicDescriptorCount;
47 }
48}
49
50void PipelineLayout::destroy(const VkAllocationCallbacks* pAllocator)
51{
52 vk::deallocate(setLayouts, pAllocator); // pushConstantRanges are in the same allocation
53}
54
55size_t PipelineLayout::ComputeRequiredAllocationSize(const VkPipelineLayoutCreateInfo* pCreateInfo)
56{
57 return (pCreateInfo->setLayoutCount * sizeof(DescriptorSetLayout*)) +
58 (pCreateInfo->pushConstantRangeCount * sizeof(VkPushConstantRange)) +
59 (pCreateInfo->setLayoutCount * sizeof(uint32_t)); // dynamicOffsetBases
60}
61
62size_t PipelineLayout::getNumDescriptorSets() const
63{
64 return setLayoutCount;
65}
66
67DescriptorSetLayout const* PipelineLayout::getDescriptorSetLayout(size_t descriptorSet) const
68{
69 ASSERT(descriptorSet < setLayoutCount);
70 return setLayouts[descriptorSet];
71}
72
73uint32_t PipelineLayout::getDynamicOffsetBase(size_t descriptorSet) const
74{
75 ASSERT(descriptorSet < setLayoutCount);
76 return dynamicOffsetBases[descriptorSet];
77}
78
79} // namespace vk
80