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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/buffer_descriptor.h"
#include <vector>
#include "src/make_unique.h"
#include "src/vulkan/command_buffer.h"
#include "src/vulkan/device.h"
namespace amber {
namespace vulkan {
BufferDescriptor::BufferDescriptor(Buffer* buffer,
DescriptorType type,
Device* device,
uint32_t desc_set,
uint32_t binding)
: BufferBackedDescriptor(buffer, type, device, desc_set, binding) {}
BufferDescriptor::~BufferDescriptor() = default;
Result BufferDescriptor::CreateResourceIfNeeded() {
if (!transfer_buffers_.empty()) {
return Result(
"Vulkan: BufferDescriptor::CreateResourceIfNeeded() must be called "
"only when |transfer_buffers| is empty");
}
transfer_buffers_.reserve(GetAmberBuffers().size());
for (const auto& amber_buffer : GetAmberBuffers()) {
if (amber_buffer->ValuePtr()->empty())
continue;
uint32_t size_in_bytes =
amber_buffer ? static_cast<uint32_t>(amber_buffer->ValuePtr()->size())
: 0;
transfer_buffers_.emplace_back(MakeUnique<TransferBuffer>(
device_, size_in_bytes, amber_buffer->GetFormat()));
VkBufferUsageFlags flags =
VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
if (IsUniformBuffer() || IsUniformBufferDynamic()) {
flags |= VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
} else if (IsStorageBuffer() || IsStorageBufferDynamic()) {
flags |= VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
} else if (IsUniformTexelBuffer()) {
flags |= VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
} else if (IsStorageTexelBuffer()) {
flags |= VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
} else {
return Result("Unexpected buffer type when deciding usage flags");
}
Result r = transfer_buffers_.back()->Initialize(flags);
if (!r.IsSuccess())
return r;
}
is_descriptor_set_update_needed_ = true;
return {};
}
Result BufferDescriptor::MoveResourceToBufferOutput() {
Result r = BufferBackedDescriptor::MoveResourceToBufferOutput();
transfer_buffers_.clear();
return r;
}
void BufferDescriptor::UpdateDescriptorSetIfNeeded(
VkDescriptorSet descriptor_set) {
if (!is_descriptor_set_update_needed_)
return;
std::vector<VkDescriptorBufferInfo> buffer_infos;
std::vector<VkBufferView> buffer_views;
for (const auto& buffer : transfer_buffers_) {
VkDescriptorBufferInfo buffer_info;
buffer_info.buffer = buffer->GetVkBuffer();
buffer_info.offset = 0;
buffer_info.range = VK_WHOLE_SIZE;
buffer_infos.push_back(buffer_info);
if (IsUniformTexelBuffer() || IsStorageTexelBuffer()) {
buffer_views.push_back(*buffer->GetVkBufferView());
}
}
VkWriteDescriptorSet write = VkWriteDescriptorSet();
write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
write.dstSet = descriptor_set;
write.dstBinding = binding_;
write.dstArrayElement = 0;
write.descriptorCount = static_cast<uint32_t>(buffer_infos.size());
write.descriptorType = GetVkDescriptorType();
write.pBufferInfo = buffer_infos.data();
write.pTexelBufferView = buffer_views.data();
device_->GetPtrs()->vkUpdateDescriptorSets(device_->GetVkDevice(), 1, &write,
0, nullptr);
is_descriptor_set_update_needed_ = false;
}
std::vector<Resource*> BufferDescriptor::GetResources() {
std::vector<Resource*> ret;
for (auto& b : transfer_buffers_) {
ret.push_back(b.get());
}
return ret;
}
} // namespace vulkan
} // namespace amber
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