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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/vkscript/datum_type_parser.h"
#include "src/format_parser.h"
#include "src/make_unique.h"
namespace amber {
namespace vkscript {
namespace {
FormatComponentType FORMAT_TYPES[] = {
FormatComponentType::kR, FormatComponentType::kG, FormatComponentType::kB,
FormatComponentType::kA};
} // namespace
DatumTypeParser::DatumTypeParser() = default;
DatumTypeParser::~DatumTypeParser() = default;
std::unique_ptr<Format> DatumTypeParser::Parse(const std::string& data) {
auto fmt = MakeUnique<Format>();
bool matrix = false;
if (data == "int") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSInt, 32);
} else if (data == "uint") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kUInt, 32);
} else if (data == "int8_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSInt, 8);
} else if (data == "uint8_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kUInt, 8);
} else if (data == "int16_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSInt, 16);
} else if (data == "uint16_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kUInt, 16);
} else if (data == "int64_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSInt, 64);
} else if (data == "uint64_t") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kUInt, 64);
} else if (data == "float") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSFloat, 32);
} else if (data == "double") {
fmt->AddComponent(FormatComponentType::kR, FormatMode::kSFloat, 64);
} else {
int row_count = 4;
FormatMode mode = FormatMode::kSFloat;
uint8_t num_bits = 32;
size_t vec_pos = data.find("vec");
if (vec_pos != std::string::npos) {
if (data[0] == 'i') {
mode = FormatMode::kSInt;
} else if (data[0] == 'u') {
mode = FormatMode::kUInt;
} else if (data[0] == 'd') {
num_bits = 64;
}
if (data[1] == '8')
num_bits = 8;
else if (data[1] == '1' && data[2] == '6')
num_bits = 16;
else if (data[1] == '6' && data[2] == '4')
num_bits = 64;
if ((vec_pos + 3) < data.length())
row_count = data[vec_pos + 3] - '0';
} else {
size_t mat_pos = data.find("mat");
if (mat_pos == std::string::npos)
return nullptr;
matrix = true;
if (data[0] == 'd')
num_bits = 64;
int column_count = 1;
if (mat_pos + 3 < data.length())
column_count = data[mat_pos + 3] - '0';
if (mat_pos + 5 < data.length())
row_count = data[mat_pos + 5] - '0';
else
row_count = column_count;
fmt->SetColumnCount(static_cast<uint32_t>(column_count));
}
for (int i = 0; i < row_count; ++i)
fmt->AddComponent(FORMAT_TYPES[i], mode, num_bits);
}
// Convert the name back into a FormatType so we can use it in the buffer
// later Otherwise, we end up with a type of Unknown.
//
// There is no equivalent type for a matrix.
if (!matrix) {
std::string name = "";
std::string parts = "ARGB";
const auto& comps = fmt->GetComponents();
for (const auto& comp : comps) {
name += parts[static_cast<uint8_t>(comp.type)] +
std::to_string(comp.num_bits);
}
name += "_";
switch (comps[0].mode) {
case FormatMode::kUNorm:
case FormatMode::kUFloat:
case FormatMode::kUScaled:
case FormatMode::kSNorm:
case FormatMode::kSScaled:
case FormatMode::kSRGB:
return nullptr;
case FormatMode::kUInt:
name += "UINT";
break;
case FormatMode::kSInt:
name += "SINT";
break;
case FormatMode::kSFloat:
name += "SFLOAT";
break;
}
fmt->SetFormatType(FormatParser::NameToType(name));
}
return fmt;
}
} // namespace vkscript
} // namespace amber
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