120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
#include"VKDescriptorSets.h"
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#include"VKDevice.h"
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VK_NAMESPACE_BEGIN
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namespace
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{
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void DestroyDescriptorSetLayout(VkDevice device,List<VkDescriptorSetLayout> &dsl_list)
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{
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const int count=dsl_list.GetCount();
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if(count>0)
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{
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VkDescriptorSetLayout *dsl=dsl_list.GetData();
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for(int i=0;i<count;i++)
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{
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vkDestroyDescriptorSetLayout(device,*dsl,nullptr);
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++dsl;
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}
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dsl_list.Clear();
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}
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}
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}//namespace
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DescriptorSetLayout::~DescriptorSetLayout()
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{
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// 这里注释掉是因为从来不见那里的范例有FREE过，但又有vkFreeDescriptorSets这个函数。如发现此注释，请使用工具查是否有资源泄露
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//{
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//const int count=desc_sets.GetCount();
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//if(count>0)
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// vkFreeDescriptorSets(device->GetDevice(),device->GetDescriptorPool(),count,desc_sets.GetData());
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//}
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DestroyDescriptorSetLayout(*device,desc_set_layout_list);
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}
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bool DescriptorSetLayout::UpdateBuffer(const uint32_t binding,const VkDescriptorBufferInfo *buf_info)
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{
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int index;
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if(!binding_index.Get(binding,index))
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return(false);
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VkDescriptorSet set;
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if(!desc_sets.Get(index,set))
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return(false);
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// Update the descriptor set determining the shader binding points
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// For every binding point used in a shader there needs to be one
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// descriptor set matching that binding point
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VkWriteDescriptorSet writeDescriptorSet = {};
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// Binding 0 : Uniform buffer
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writeDescriptorSet.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
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writeDescriptorSet.dstSet = set;
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writeDescriptorSet.descriptorCount = 1;
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writeDescriptorSet.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
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writeDescriptorSet.pBufferInfo = buf_info;
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writeDescriptorSet.dstBinding = binding;
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vkUpdateDescriptorSets(device->GetDevice(), 1, &writeDescriptorSet, 0, nullptr);
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return(true);
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}
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void DescriptorSetLayoutCreater::Bind(const uint32_t binding,VkDescriptorType desc_type,VkShaderStageFlagBits stageFlags)
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{
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VkDescriptorSetLayoutBinding layout_binding = {};
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layout_binding.binding = binding;
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layout_binding.descriptorType = desc_type;
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layout_binding.descriptorCount = 1;
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layout_binding.stageFlags = stageFlags;
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layout_binding.pImmutableSamplers = nullptr;
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const int index=layout_binding_list.Add(layout_binding);
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binding_index.Add(binding,index);
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}
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DescriptorSetLayout *DescriptorSetLayoutCreater::Create()
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{
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const int count=layout_binding_list.GetCount();
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if(count<=0)
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return(nullptr);
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VkDescriptorSetLayoutCreateInfo descriptor_layout = {};
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descriptor_layout.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
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descriptor_layout.pNext = nullptr;
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descriptor_layout.bindingCount = count;
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descriptor_layout.pBindings = layout_binding_list.GetData();
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List<VkDescriptorSetLayout> dsl_list;
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dsl_list.SetCount(count);
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if(vkCreateDescriptorSetLayout(device->GetDevice(),&descriptor_layout, nullptr, dsl_list.GetData())!=VK_SUCCESS)
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return(nullptr);
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VkDescriptorSetAllocateInfo alloc_info;
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alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
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alloc_info.pNext = nullptr;
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alloc_info.descriptorPool = device->GetDescriptorPool();
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alloc_info.descriptorSetCount = count;
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alloc_info.pSetLayouts = dsl_list.GetData();
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List<VkDescriptorSet> desc_set;
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desc_set.SetCount(count);
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if(vkAllocateDescriptorSets(device->GetDevice(), &alloc_info, desc_set.GetData())!=VK_SUCCESS)
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{
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DestroyDescriptorSetLayout(*device,dsl_list);
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return(nullptr);
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}
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return(new DescriptorSetLayout(device,dsl_list,desc_set,binding_index));
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}
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VK_NAMESPACE_END
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