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initial commit-moved from vulkan_guide

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hydrogendeuteride
2025-10-10 22:53:54 +09:00
commit 8853429937
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third_party/fastgltf/tests/glb_tests.cpp vendored Normal file
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#include <fstream>
#include <catch2/catch_test_macros.hpp>
#include <fastgltf/parser.hpp>
#include <fastgltf/types.hpp>
#include "gltf_path.hpp"
TEST_CASE("Load basic GLB file", "[gltf-loader]") {
fastgltf::Parser parser;
auto folder = sampleModels / "2.0" / "Box" / "glTF-Binary";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(folder / "Box.glb"));
SECTION("Load basic Box.glb") {
auto asset = parser.loadBinaryGLTF(&jsonData, folder, fastgltf::Options::None, fastgltf::Category::Buffers);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);
REQUIRE(asset->buffers.size() == 1);
auto& buffer = asset->buffers.front();
auto* bufferView = std::get_if<fastgltf::sources::ByteView>(&buffer.data);
REQUIRE(bufferView != nullptr);
auto jsonSpan = fastgltf::span<std::byte>(jsonData);
REQUIRE(bufferView->bytes.data() - jsonSpan.data() == 1016);
REQUIRE(jsonSpan.size() == 1664);
}
SECTION("Load basic Box.glb and load buffers") {
auto asset = parser.loadBinaryGLTF(&jsonData, folder, fastgltf::Options::LoadGLBBuffers, fastgltf::Category::Buffers);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);
REQUIRE(asset->buffers.size() == 1);
auto& buffer = asset->buffers.front();
auto* bufferVector = std::get_if<fastgltf::sources::Vector>(&buffer.data);
REQUIRE(bufferVector != nullptr);
REQUIRE(!bufferVector->bytes.empty());
REQUIRE(static_cast<uint64_t>(bufferVector->bytes.size() - buffer.byteLength) < 3);
}
SECTION("Load GLB by bytes") {
std::ifstream file(folder / "Box.glb", std::ios::binary | std::ios::ate);
auto length = static_cast<size_t>(file.tellg());
file.seekg(0, std::ifstream::beg);
std::vector<uint8_t> bytes(length + fastgltf::getGltfBufferPadding());
file.read(reinterpret_cast<char*>(bytes.data()), static_cast<std::streamsize>(length));
fastgltf::GltfDataBuffer byteBuffer;
REQUIRE(byteBuffer.fromByteView(bytes.data(), length, length + fastgltf::getGltfBufferPadding()));
auto asset = parser.loadBinaryGLTF(&byteBuffer, folder, fastgltf::Options::LoadGLBBuffers, fastgltf::Category::Buffers);
REQUIRE(asset.error() == fastgltf::Error::None);
}
}