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// Copyright 2018 The Amber Authors.
//
// 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 "src/vulkan/descriptor.h"
#include <cassert>
#include "src/vulkan/device.h"
namespace amber {
namespace vulkan {
VkDescriptorType ToVkDescriptorType(DescriptorType type) {
switch (type) {
case DescriptorType::kStorageBuffer:
return VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
case DescriptorType::kUniformBuffer:
return VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
}
assert(false && "Unknown resource type");
return VK_DESCRIPTOR_TYPE_SAMPLER;
}
Descriptor::Descriptor(DescriptorType type,
Device* device,
uint32_t desc_set,
uint32_t binding)
: descriptor_set_(desc_set),
binding_(binding),
device_(device),
type_(type) {}
Descriptor::~Descriptor() = default;
VkWriteDescriptorSet Descriptor::GetWriteDescriptorSet(
VkDescriptorSet descriptor_set,
VkDescriptorType descriptor_type) const {
VkWriteDescriptorSet write = VkWriteDescriptorSet();
write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
write.dstSet = descriptor_set;
write.dstBinding = binding_;
write.dstArrayElement = 0;
write.descriptorCount = 1;
write.descriptorType = descriptor_type;
return write;
}
Result Descriptor::UpdateDescriptorSetForBuffer(
VkDescriptorSet descriptor_set,
VkDescriptorType descriptor_type,
const VkDescriptorBufferInfo& buffer_info) {
VkWriteDescriptorSet write =
GetWriteDescriptorSet(descriptor_set, descriptor_type);
switch (descriptor_type) {
case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC:
write.pBufferInfo = &buffer_info;
break;
default:
return Result(
"Vulkan::UpdateDescriptorSetForBuffer not descriptor based on "
"buffer");
}
UpdateVkDescriptorSet(write);
return {};
}
void Descriptor::UpdateVkDescriptorSet(const VkWriteDescriptorSet& write) {
device_->GetPtrs()->vkUpdateDescriptorSets(device_->GetDevice(), 1, &write, 0,
nullptr);
is_descriptor_set_update_needed_ = false;
}
} // namespace vulkan
} // namespace amber
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