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WIP GLTF Texture import
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This commit is contained in:
Kearwood Gilbert
2026-05-02 14:09:03 -07:00
parent f1474f1450
commit 5c5402655f
1 changed files with 49 additions and 23 deletions
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72
kraken/resources/KRResource+gltf.cpp
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@@ -67,8 +67,46 @@ KRBundle* LoadGltf(KRContext& context, simdjson::ondemand::object& jsonRoot, std
}
}
simdjson::ondemand::array textures;
tryJson(jsonRoot["textures"].get_array().get(textures));
struct TextureInfo
{
std::string name;
KRTexture* texture = nullptr;
int imageIndex = -1;
hydra::Vector2 scale{ 1.f, 1.f };
hydra::Vector2 offset{ 0.f, 0.f };
float rotation{ 0.f };
};
std::vector<TextureInfo> textures;
simdjson::ondemand::array jsonTextures;
if(tryJson(jsonRoot["textures"].get_array().get(jsonTextures)))
{
int textureIndex = 0;
for (auto jsonTexture : jsonTextures) {
TextureInfo& texture = textures.emplace_back();
std::string textureName;
std::string_view textureNameVal;
if (tryJson(jsonTexture["name"].get(textureNameVal))) {
texture.name = textureNameVal;
} else {
// Name not found in JSON. Generate a fall-back name.
texture.name = std::format("{}_texture_{}", baseName, textureIndex);
}
// texture["sampler"] ...
tryJson(jsonTexture["source"].get(texture.imageIndex));
simdjson::ondemand::object extensions;
if(tryJson(jsonTexture["extensions"].get(extensions))) {
simdjson::ondemand::object textureTransform;
if(tryJson(extensions["KHR_texture_transform"].get(textureTransform))) {
tryJson(textureTransform["offset"].get(texture.offset));
tryJson(textureTransform["rotation"].get(texture.rotation));
tryJson(textureTransform["scale"].get(texture.scale));
}
}
textureIndex++;
}
}
simdjson::ondemand::array images;
tryJson(jsonRoot["images"].get_array().get(images));
@@ -111,29 +149,17 @@ KRBundle* LoadGltf(KRContext& context, simdjson::ondemand::object& jsonRoot, std
tryJson(baseColorTextureInfo["texCoord"].get(new_material->m_baseColorMap.texCoord));
int textureIndex = -1;
if(tryJson(baseColorTextureInfo["index"].get(textureIndex))) {
simdjson::ondemand::object texture;
if(tryJson(textures.at(textureIndex).get(texture))) {
int imageIndex = -1;
// texture["name"] ...
// texture["sampler"] ...
if(tryJson(texture["source"].get(imageIndex))) {
simdjson::ondemand::object image;
if(tryJson(images.at(imageIndex).get(image))) {
}
}
simdjson::ondemand::object extensions;
if(tryJson(texture["extensions"].get(extensions))) {
simdjson::ondemand::object textureTransform;
if(tryJson(texture["KHR_texture_transform"].get(textureTransform))) {
tryJson(textureTransform["offset"].get(new_material->m_baseColorMap.offset));
tryJson(textureTransform["rotation"].get(new_material->m_baseColorMap.rotation));
tryJson(textureTransform["scale"].get(new_material->m_baseColorMap.scale));
}
}
}
if (textureIndex < 0 || textureIndex >= textures.size()) {
// TODO: Log error...
} else {
const TextureInfo& texture = textures[textureIndex];
new_material->m_baseColorMap.scale = texture.scale;
new_material->m_baseColorMap.offset = texture.offset;
new_material->m_baseColorMap.rotation = texture.rotation;
// new_material->m_baseColorMap.texture = ...
}
}
} // baseColorTexture
// baseColorTexture...
tryJson(pbrMetallicRoughnessObj["metallicFactor"].get(new_material->m_metalicFactor));
tryJson(pbrMetallicRoughnessObj["roughnessFactor"].get(new_material->m_roughnessFactor));