Michael Kowalski
b17e75f876
Updated the code to invoke the USD asset resolver for texture import and export. This removes the assumption that assets are specified as file system paths. Added logic to allow importing textures from paths that are not package relative. The new heuristics will attempt to import files that don't exist on the file system, but which can be resolved with the USD asset resolver, to allow importing textures from URIs.
83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#pragma once
|
|
|
|
#include <pxr/pxr.h>
|
|
#include <pxr/usd/usd/prim.h>
|
|
#include <pxr/usd/usd/stage.h>
|
|
#include <pxr/usd/usdShade/material.h>
|
|
|
|
#include <string>
|
|
|
|
struct bNode;
|
|
struct bNodeTree;
|
|
struct Material;
|
|
struct USDExportParams;
|
|
struct Material;
|
|
|
|
namespace blender::io::usd {
|
|
|
|
template<typename T>
|
|
T usd_define_or_over(pxr::UsdStageRefPtr stage, pxr::SdfPath path, bool as_overs = false)
|
|
{
|
|
return (as_overs) ? T(stage->OverridePrim(path)) : T::Define(stage, path);
|
|
}
|
|
|
|
struct USDExporterContext;
|
|
|
|
void create_usd_cycles_material(pxr::UsdStageRefPtr a_stage,
|
|
bNodeTree *ntree,
|
|
pxr::UsdShadeMaterial &usd_material,
|
|
const USDExportParams &export_params);
|
|
void create_usd_cycles_material(pxr::UsdStageRefPtr a_stage,
|
|
Material *material,
|
|
pxr::UsdShadeMaterial &usd_material,
|
|
const USDExportParams &export_params);
|
|
void create_mdl_material(const USDExporterContext &usd_export_context,
|
|
Material *material,
|
|
pxr::UsdShadeMaterial &usd_material);
|
|
/* Returns a USDPreviewSurface token name for a given Blender shader Socket name,
|
|
* or an empty TfToken if the input name is not found in the map. */
|
|
const pxr::TfToken token_for_input(const char *input_name);
|
|
|
|
/**
|
|
* Entry point to create an approximate USD Preview Surface network from a Cycles node graph.
|
|
* Due to the limited nodes in the USD Preview Surface specification, only the following nodes
|
|
* are supported:
|
|
* - UVMap
|
|
* - Texture Coordinate
|
|
* - Image Texture
|
|
* - Principled BSDF
|
|
* More may be added in the future.
|
|
*
|
|
* \param default_uv: used as the default UV set name sampled by the `primvar`
|
|
* reader shaders generated for image texture nodes that don't have an attached UVMap node.
|
|
*/
|
|
void create_usd_preview_surface_material(const USDExporterContext &usd_export_context,
|
|
Material *material,
|
|
pxr::UsdShadeMaterial &usd_material,
|
|
const std::string &default_uv = "");
|
|
|
|
/* Entry point to create USD Shade Material network from Blender viewport display settings. */
|
|
void create_usd_viewport_material(const USDExporterContext &usd_export_context,
|
|
Material *material,
|
|
pxr::UsdShadeMaterial &usd_material);
|
|
|
|
void export_texture(bNode *node,
|
|
const pxr::UsdStageRefPtr stage,
|
|
const bool allow_overwrite = false);
|
|
|
|
std::string get_tex_image_asset_path(bNode *node,
|
|
const pxr::UsdStageRefPtr stage,
|
|
const USDExportParams &export_params);
|
|
|
|
std::string get_tex_image_asset_path(const std::string &asset_path,
|
|
const pxr::UsdStageRefPtr stage,
|
|
const USDExportParams &export_params);
|
|
|
|
void export_textures(const Material *material,
|
|
const pxr::UsdStageRefPtr stage,
|
|
bool allow_overwrite = false);
|
|
|
|
} // namespace blender::io::usd
|
|
|