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Add: emissive_strength, sheen, unlit, anisotropy extension tests
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@spnda
spnda committed Mar 30, 2024
1 parent 4cd9855 commit 45cadf7
Showing 1 changed file with 176 additions and 78 deletions.
254 changes: 176 additions & 78 deletions tests/extension_tests.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,30 @@
#include <fastgltf/core.hpp>
#include "gltf_path.hpp"

TEST_CASE("Loading KHR_texture_basisu glTF files", "[gltf-loader]") {
// Tests for extension functionality, declared in the same order as the fastgltf::Extensions enum.
// Some tests might need expanding, by being tested on multiple assets.

TEST_CASE("Extension KHR_texture_transform", "[gltf-loader]") {
auto transformTest = sampleModels / "2.0" / "TextureTransformMultiTest" / "glTF";

auto jsonData = std::make_unique<fastgltf::GltfDataBuffer>();
REQUIRE(jsonData->loadFromFile(transformTest / "TextureTransformMultiTest.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_texture_transform);
auto asset = parser.loadGltfJson(jsonData.get(), transformTest, fastgltf::Options::DontRequireValidAssetMember, fastgltf::Category::Materials);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(!asset->materials.empty());

auto& material = asset->materials.front();
REQUIRE(material.pbrData.baseColorTexture.has_value());
REQUIRE(material.pbrData.baseColorTexture->transform != nullptr);
REQUIRE(material.pbrData.baseColorTexture->transform->uvOffset[0] == 0.705f);
REQUIRE(material.pbrData.baseColorTexture->transform->rotation == Catch::Approx(1.5707963705062866f));
}

TEST_CASE("Extension KHR_texture_basisu", "[gltf-loader]") {
auto stainedLamp = sampleModels / "2.0" / "StainedGlassLamp" / "glTF-KTX-BasisU";

auto jsonData = std::make_unique<fastgltf::GltfDataBuffer>();
Expand Down Expand Up @@ -46,53 +69,93 @@ TEST_CASE("Loading KHR_texture_basisu glTF files", "[gltf-loader]") {
}
}

TEST_CASE("Loading KHR_texture_transform glTF files", "[gltf-loader]") {
auto transformTest = sampleModels / "2.0" / "TextureTransformMultiTest" / "glTF";
// TODO: Add tests for MSFT_texture_dds, KHR_mesh_quantization extension

auto jsonData = std::make_unique<fastgltf::GltfDataBuffer>();
REQUIRE(jsonData->loadFromFile(transformTest / "TextureTransformMultiTest.gltf"));
TEST_CASE("Extension EXT_meshopt_compression", "[gltf-loader]") {
auto brainStem = sampleModels / "2.0" / "BrainStem" / "glTF-Meshopt";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(brainStem / "BrainStem.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_texture_transform);
auto asset = parser.loadGltfJson(jsonData.get(), transformTest, fastgltf::Options::DontRequireValidAssetMember, fastgltf::Category::Materials);
REQUIRE(asset.error() == fastgltf::Error::None);
fastgltf::Parser parser(fastgltf::Extensions::EXT_meshopt_compression | fastgltf::Extensions::KHR_mesh_quantization);
auto asset = parser.loadGltfJson(&jsonData, brainStem, fastgltf::Options::None);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(!asset->materials.empty());
for (auto i = 0; i < 8; ++i) {
REQUIRE(bool(asset->bufferViews[i].meshoptCompression));
}

auto& material = asset->materials.front();
REQUIRE(material.pbrData.baseColorTexture.has_value());
REQUIRE(material.pbrData.baseColorTexture->transform != nullptr);
REQUIRE(material.pbrData.baseColorTexture->transform->uvOffset[0] == 0.705f);
REQUIRE(material.pbrData.baseColorTexture->transform->rotation == Catch::Approx(1.5707963705062866f));
{
auto& mc = *asset->bufferViews[0].meshoptCompression;
REQUIRE(mc.bufferIndex == 0);
REQUIRE(mc.byteOffset == 0);
REQUIRE(mc.byteLength == 2646);
REQUIRE(mc.byteStride == 4);
REQUIRE(mc.mode == fastgltf::MeshoptCompressionMode::Attributes);
REQUIRE(mc.count == 34084);
}
{
auto& mc = *asset->bufferViews[1].meshoptCompression;
REQUIRE(mc.bufferIndex == 0);
REQUIRE(mc.byteOffset == 2648);
REQUIRE(mc.byteLength == 68972);
REQUIRE(mc.byteStride == 4);
REQUIRE(mc.mode == fastgltf::MeshoptCompressionMode::Attributes);
REQUIRE(mc.filter == fastgltf::MeshoptCompressionFilter::Octahedral);
REQUIRE(mc.count == 34084);
}
}

TEST_CASE("Test KHR_lights_punctual", "[gltf-loader]") {
auto lightsLamp = sampleModels / "2.0" / "LightsPunctualLamp" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(lightsLamp / "LightsPunctualLamp.gltf"));
TEST_CASE("Extension KHR_lights_punctual", "[gltf-loader]") {
SECTION("Point light") {
auto lightsLamp = sampleModels / "2.0" / "LightsPunctualLamp" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(lightsLamp / "LightsPunctualLamp.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_lights_punctual);
auto asset = parser.loadGltfJson(&jsonData, lightsLamp, fastgltf::Options::None, fastgltf::Category::Nodes);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);
fastgltf::Parser parser(fastgltf::Extensions::KHR_lights_punctual);
auto asset = parser.loadGltfJson(&jsonData, lightsLamp, fastgltf::Options::None, fastgltf::Category::Nodes);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->lights.size() == 5);
REQUIRE(asset->nodes.size() > 4);
REQUIRE(asset->lights.size() == 5);
REQUIRE(asset->nodes.size() > 4);

auto& nodes = asset->nodes;
REQUIRE(nodes[3].lightIndex.has_value());
REQUIRE(nodes[3].lightIndex.value() == 0);

auto& lights = asset->lights;
REQUIRE(lights[0].name == "Point");
REQUIRE(lights[0].type == fastgltf::LightType::Point);
REQUIRE(lights[0].intensity == 15.0f);
REQUIRE(glm::epsilonEqual(lights[0].color[0], 1.0f, glm::epsilon<float>()));
REQUIRE(glm::epsilonEqual(lights[0].color[1], 0.63187497854232788f, glm::epsilon<float>()));
REQUIRE(glm::epsilonEqual(lights[0].color[2], 0.23909975588321689f, glm::epsilon<float>()));
auto& nodes = asset->nodes;
REQUIRE(nodes[3].lightIndex.has_value());
REQUIRE(nodes[3].lightIndex.value() == 0);

auto& lights = asset->lights;
REQUIRE(lights[0].name == "Point");
REQUIRE(lights[0].type == fastgltf::LightType::Point);
REQUIRE(lights[0].intensity == 15.0f);
REQUIRE(glm::epsilonEqual(lights[0].color[0], 1.0f, glm::epsilon<float>()));
REQUIRE(glm::epsilonEqual(lights[0].color[1], 0.63187497854232788f, glm::epsilon<float>()));
REQUIRE(glm::epsilonEqual(lights[0].color[2], 0.23909975588321689f, glm::epsilon<float>()));
}

SECTION("Directional light") {
auto directionalLight = sampleModels / "2.0" / "DirectionalLight" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(directionalLight / "DirectionalLight.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_lights_punctual);
auto asset = parser.loadGltfJson(&jsonData, directionalLight, fastgltf::Options::None, fastgltf::Category::Nodes);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->lights.size() == 1);

auto& light = asset->lights.front();
REQUIRE(light.color == std::array<fastgltf::num, 3>{{0.9, 0.8, 0.1}});
REQUIRE(light.intensity == 1.0f);
REQUIRE(light.type == fastgltf::LightType::Directional);
REQUIRE(light.name == "Sun");
}
}

TEST_CASE("Test KHR_materials_specular", "[gltf-loader]") {
// TODO: Add tests for EXT_texture_webp extension

TEST_CASE("Extension KHR_materials_specular", "[gltf-loader]") {
auto specularTest = sampleModels / "2.0" / "SpecularTest" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(specularTest / "SpecularTest.gltf"));
Expand Down Expand Up @@ -121,7 +184,7 @@ TEST_CASE("Test KHR_materials_specular", "[gltf-loader]") {
REQUIRE(materials[12].specular->specularColorTexture.value().textureIndex == 2);
}

TEST_CASE("Test KHR_materials_ior and KHR_materials_iridescence", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_ior and KHR_materials_iridescence", "[gltf-loader]") {
auto specularTest = sampleModels / "2.0" / "IridescenceDielectricSpheres" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(specularTest / "IridescenceDielectricSpheres.gltf"));
Expand Down Expand Up @@ -149,7 +212,7 @@ TEST_CASE("Test KHR_materials_ior and KHR_materials_iridescence", "[gltf-loader]
REQUIRE(materials[50].iridescence->iridescenceThicknessMaximum == 200.0f);
}

TEST_CASE("Test KHR_materials_volume and KHR_materials_transmission", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_volume and KHR_materials_transmission", "[gltf-loader]") {
auto beautifulGame = sampleModels / "2.0" / "ABeautifulGame" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(beautifulGame / "ABeautifulGame.gltf"));
Expand All @@ -172,7 +235,7 @@ TEST_CASE("Test KHR_materials_volume and KHR_materials_transmission", "[gltf-loa
REQUIRE(materials[5].transmission->transmissionFactor == 1.0f);
}

TEST_CASE("Test KHR_materials_clearcoat", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_clearcoat", "[gltf-loader]") {
auto clearcoatTest = sampleModels / "2.0" / "ClearCoatTest" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(clearcoatTest / "ClearCoatTest.gltf"));
Expand All @@ -197,7 +260,75 @@ TEST_CASE("Test KHR_materials_clearcoat", "[gltf-loader]") {
REQUIRE(materials[7].clearcoat->clearcoatRoughnessTexture->texCoordIndex == 0);
}

TEST_CASE("Test EXT_mesh_gpu_instancing", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_emissive_strength", "[gltf-loader]") {
auto emissiveStrengthTest = sampleModels / "2.0" / "EmissiveStrengthTest" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(emissiveStrengthTest / "EmissiveStrengthTest.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_materials_emissive_strength);
auto asset = parser.loadGltfJson(&jsonData, emissiveStrengthTest);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->materials.size() >= 3);

REQUIRE(asset->materials[0].emissiveStrength == 4.0f);
REQUIRE(asset->materials[2].emissiveStrength == 2.0f);
}

TEST_CASE("Extension KHR_materials_sheen", "[gltf-loader]") {
auto sheenChair = sampleModels / "2.0" / "SheenChair" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(sheenChair / "SheenChair.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_materials_sheen | fastgltf::Extensions::KHR_texture_transform);
auto asset = parser.loadGltfJson(&jsonData, sheenChair);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->materials.size() >= 5);

auto& mat0 = asset->materials[0];
REQUIRE(mat0.sheen);
REQUIRE(mat0.sheen->sheenColorFactor == std::array<fastgltf::num, 3>{{1.0, 0.329, 0.1}});
REQUIRE(mat0.sheen->sheenRoughnessFactor == 0.8f);
}

TEST_CASE("Extension KHR_materials_unlit", "[gltf-loader]") {
auto unlitTest = sampleModels / "2.0" / "UnlitTest" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(unlitTest / "UnlitTest.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_materials_unlit);
auto asset = parser.loadGltfJson(&jsonData, unlitTest);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->materials.size() == 2);
REQUIRE(asset->materials[0].unlit);
REQUIRE(asset->materials[1].unlit);
}

TEST_CASE("Extension KHR_materials_anisotropy", "[gltf-loader]") {
auto carbonFibre = sampleModels / "2.0" / "CarbonFibre" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(carbonFibre / "CarbonFibre.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::KHR_materials_anisotropy);
auto asset = parser.loadGltfJson(&jsonData, carbonFibre);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

REQUIRE(asset->materials.size() == 1);
auto& anisotropy = asset->materials[0].anisotropy;
REQUIRE(anisotropy);
REQUIRE(anisotropy->anisotropyStrength == 0.5f);
REQUIRE(anisotropy->anisotropyRotation == 0.0f);
REQUIRE(anisotropy->anisotropyTexture.has_value());
REQUIRE(anisotropy->anisotropyTexture->textureIndex == 2);
}

TEST_CASE("Extension EXT_mesh_gpu_instancing", "[gltf-loader]") {
auto simpleInstancingTest = sampleModels / "2.0" / "SimpleInstancing" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(simpleInstancingTest / "SimpleInstancing.gltf"));
Expand All @@ -218,7 +349,7 @@ TEST_CASE("Test EXT_mesh_gpu_instancing", "[gltf-loader]") {
}

#if FASTGLTF_ENABLE_DEPRECATED_EXT
TEST_CASE("Test KHR_materials_pbrSpecularGlossiness", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_pbrSpecularGlossiness", "[gltf-loader]") {
auto specularGlossinessTest = sampleModels / "2.0" / "SpecGlossVsMetalRough" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(specularGlossinessTest / "SpecGlossVsMetalRough.gltf"));
Expand Down Expand Up @@ -259,7 +390,9 @@ TEST_CASE("Test KHR_materials_pbrSpecularGlossiness", "[gltf-loader]") {
}
#endif

TEST_CASE("Test KHR_materials_dispersion", "[gltf-loader]") {
// TODO: Add tests for MSFT_packing_* extensions

TEST_CASE("Extension KHR_materials_dispersion", "[gltf-loader]") {
constexpr std::string_view json = R"({"materials": [
{
"extensions": {
Expand All @@ -281,7 +414,7 @@ TEST_CASE("Test KHR_materials_dispersion", "[gltf-loader]") {
REQUIRE(asset->materials.front().dispersion == 0.1f);
}

TEST_CASE("Test KHR_materials_variant", "[gltf-loader]") {
TEST_CASE("Extension KHR_materials_variant", "[gltf-loader]") {
auto velvetSofa = sampleModels / "2.0" / "GlamVelvetSofa" / "glTF";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(velvetSofa / "GlamVelvetSofa.gltf"));
Expand Down Expand Up @@ -309,38 +442,3 @@ TEST_CASE("Test KHR_materials_variant", "[gltf-loader]") {
REQUIRE(primitive.mappings[3] == 5);
REQUIRE(primitive.mappings[4] == 6);
}

TEST_CASE("Test EXT_meshopt_compression", "[gltf-loader]") {
auto brainStem = sampleModels / "2.0" / "BrainStem" / "glTF-Meshopt";
fastgltf::GltfDataBuffer jsonData;
REQUIRE(jsonData.loadFromFile(brainStem / "BrainStem.gltf"));

fastgltf::Parser parser(fastgltf::Extensions::EXT_meshopt_compression | fastgltf::Extensions::KHR_mesh_quantization);
auto asset = parser.loadGltfJson(&jsonData, brainStem, fastgltf::Options::None);
REQUIRE(asset.error() == fastgltf::Error::None);
REQUIRE(fastgltf::validate(asset.get()) == fastgltf::Error::None);

for (auto i = 0; i < 8; ++i) {
REQUIRE(bool(asset->bufferViews[i].meshoptCompression));
}

{
auto& mc = *asset->bufferViews[0].meshoptCompression.get();
REQUIRE(mc.bufferIndex == 0);
REQUIRE(mc.byteOffset == 0);
REQUIRE(mc.byteLength == 2646);
REQUIRE(mc.byteStride == 4);
REQUIRE(mc.mode == fastgltf::MeshoptCompressionMode::Attributes);
REQUIRE(mc.count == 34084);
}
{
auto& mc = *asset->bufferViews[1].meshoptCompression.get();
REQUIRE(mc.bufferIndex == 0);
REQUIRE(mc.byteOffset == 2648);
REQUIRE(mc.byteLength == 68972);
REQUIRE(mc.byteStride == 4);
REQUIRE(mc.mode == fastgltf::MeshoptCompressionMode::Attributes);
REQUIRE(mc.filter == fastgltf::MeshoptCompressionFilter::Octahedral);
REQUIRE(mc.count == 34084);
}
}

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