1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
// 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/vertex_buffer.h"
#include <cassert>
#include <cstring>
#include "src/make_unique.h"
#include "src/vulkan/command_buffer.h"
#include "src/vulkan/device.h"
namespace amber {
namespace vulkan {
VertexBuffer::VertexBuffer(Device* device) : device_(device) {}
VertexBuffer::~VertexBuffer() = default;
void VertexBuffer::SetData(uint8_t location, Buffer* buffer) {
auto format = buffer->GetFormat();
vertex_attr_desc_.emplace_back();
// TODO(jaebaek): Support multiple binding
vertex_attr_desc_.back().binding = 0;
vertex_attr_desc_.back().location = location;
vertex_attr_desc_.back().offset = stride_in_bytes_;
vertex_attr_desc_.back().format = device_->GetVkFormat(*format);
stride_in_bytes_ += format->SizeInBytes();
data_.push_back(buffer);
}
Result VertexBuffer::FillVertexBufferWithData(CommandBuffer* command) {
// Send vertex data from host to device.
uint8_t* ptr_in_stride_begin =
static_cast<uint8_t*>(transfer_buffer_->HostAccessibleMemoryPtr());
for (uint32_t i = 0; i < GetVertexCount(); ++i) {
uint8_t* ptr = ptr_in_stride_begin;
for (uint32_t j = 0; j < data_.size(); ++j) {
size_t bytes = data_[j]->GetFormat()->SizeInBytes();
std::memcpy(ptr, data_[j]->GetValues<uint8_t>() + (i * bytes), bytes);
ptr += bytes;
}
ptr_in_stride_begin += Get4BytesAlignedStride();
}
transfer_buffer_->CopyToDevice(command);
return {};
}
void VertexBuffer::BindToCommandBuffer(CommandBuffer* command) {
const VkDeviceSize offset = 0;
const VkBuffer buffer = transfer_buffer_->GetVkBuffer();
// TODO(jaebaek): Support multiple binding
device_->GetPtrs()->vkCmdBindVertexBuffers(command->GetVkCommandBuffer(), 0,
1, &buffer, &offset);
}
Result VertexBuffer::SendVertexData(CommandBuffer* command) {
if (!is_vertex_data_pending_)
return Result("Vulkan::Vertices data was already sent");
const uint32_t n_vertices = GetVertexCount();
if (n_vertices == 0)
return Result("Vulkan::Data for VertexBuffer is empty");
uint32_t bytes = Get4BytesAlignedStride() * n_vertices;
if (!transfer_buffer_) {
transfer_buffer_ = MakeUnique<TransferBuffer>(device_, bytes);
Result r = transfer_buffer_->Initialize(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT |
VK_BUFFER_USAGE_TRANSFER_DST_BIT);
if (!r.IsSuccess())
return r;
}
FillVertexBufferWithData(command);
is_vertex_data_pending_ = false;
return {};
}
} // namespace vulkan
} // namespace amber
|
