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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
// ospray
#include "Material.h"
#include "render/bsdfs/MicrofacetAlbedoTables.h"
#include "texture/Texture.h"
#ifndef OSPRAY_TARGET_SYCL
// ispc
#include "render/Material_ispc.h"
#endif
namespace ospray {
// Material definitions ///////////////////////////////////////////////////////
Ref<MicrofacetAlbedoTables> Material::microfacetAlbedoTables;
Material::Material(api::ISPCDevice &device, const FeatureFlagsOther ffo)
: AddStructShared(device.getDRTDevice(), device), featureFlags(ffo)
{
managedObjectType = OSP_MATERIAL;
#ifndef OSPRAY_TARGET_SYCL
getSh()->getTransparency =
reinterpret_cast<ispc::Material_GetTransparencyFunc>(
ispc::Material_getTransparency_addr());
getSh()->selectNextMedium =
reinterpret_cast<ispc::Material_SelectNextMediumFunc>(
ispc::Material_selectNextMedium_addr());
getSh()->getEmission = reinterpret_cast<ispc::Material_GetEmissionFunc>(
ispc::Material_getEmission_addr());
#endif
if (!microfacetAlbedoTables) {
microfacetAlbedoTables = new MicrofacetAlbedoTables(device);
// Release the extra local ref
microfacetAlbedoTables->refDec();
} else {
microfacetAlbedoTables->refInc();
}
getSh()->microfacetAlbedoTables = microfacetAlbedoTables->getSh();
}
Material::~Material()
{
if (microfacetAlbedoTables) {
const bool lastReference = microfacetAlbedoTables->useCount() == 1;
// The last material referencing the albedo tables should null out the
// pointer so we don't try to call refDec again and know to re-create it
// when a new material is made
if (lastReference) {
microfacetAlbedoTables = nullptr;
} else {
microfacetAlbedoTables->refDec();
}
}
}
std::string Material::toString() const
{
return "ospray::Material";
}
void Material::commit() {}
ispc::TextureParam Material::getTextureParam(
const char *texture_name, const Ref<Texture> &ref_tex)
{
if (ref_tex)
featureFlags |= FFO_TEXTURE_IN_MATERIAL;
// Get 2D transformation if exists
int transformFlags = ispc::TRANSFORM_FLAG_NONE;
affine2f xfm2f = affine2f(one);
utility::Optional<affine2f> xform2f = getTextureTransform2f(texture_name);
if (xform2f.has_value()) {
xfm2f = xform2f.value();
transformFlags |= ispc::TRANSFORM_FLAG_2D;
}
// Get 3D transformation if exists
affine3f xfm3f = affine3f(one);
auto xform3f =
getOptParam<affine3f>((std::string(texture_name) + ".transform").c_str());
if (xform3f.has_value()) {
xfm3f = xform3f.value();
transformFlags |= ispc::TRANSFORM_FLAG_3D;
}
// Initialize ISPC structure
ispc::TextureParam param;
param.ptr = ref_tex ? ref_tex->getSh() : nullptr;
param.transformFlags = (ispc::TransformFlags)transformFlags;
param.xform2f = xfm2f;
param.scale2f = sqrt(xfm2f.l.det());
param.xform3f = xfm3f;
// Done
return param;
}
MaterialParam1f Material::getMaterialParam1f(
const char *name, float valIfNotFound)
{
const std::string mapName = "map_" + std::string(name);
MaterialParam1f param;
param.ref_tex = getParamObject<Texture>(mapName.c_str());
param.tex = getTextureParam(mapName.c_str(), param.ref_tex);
param.rot = ((linear2f *)(¶m.tex.xform2f.l))->orthogonal().transposed();
param.factor = getParam<float>(name, param.tex.ptr ? 1.f : valIfNotFound);
return param;
}
MaterialParam3f Material::getMaterialParam3f(
const char *name, vec3f valIfNotFound)
{
const std::string mapName = "map_" + std::string(name);
MaterialParam3f param;
param.ref_tex = getParamObject<Texture>(mapName.c_str());
param.tex = getTextureParam(mapName.c_str(), param.ref_tex);
param.rot = ((linear2f *)(¶m.tex.xform2f.l))->orthogonal().transposed();
param.factor =
getParam<vec3f>(name, param.tex.ptr ? vec3f(1.f) : valIfNotFound);
return param;
}
utility::Optional<affine2f> Material::getTextureTransform2f(
const char *_texname)
{
std::string texname(_texname);
texname += ".";
utility::Optional<affine2f> xform;
// Apply translation
const utility::Optional<vec2f> translation =
getOptParam<vec2f>((texname + "translation").c_str());
if (translation.has_value())
xform = affine2f::translate(-translation.value());
// Apply scale
const utility::Optional<vec2f> scale =
getOptParam<vec2f>((texname + "scale").c_str());
if (scale.has_value()) {
xform = xform.value_or(affine2f(one)) * affine2f::translate(vec2f(0.5f));
xform = *xform * affine2f::scale(rcp(scale.value()));
xform = *xform * affine2f::translate(vec2f(-0.5f));
}
// Apply rotation
const utility::Optional<float> rotation =
getOptParam<float>((texname + "rotation").c_str());
if (rotation.has_value()) {
xform = xform.value_or(affine2f(one)) * affine2f::translate(vec2f(0.5f));
xform = *xform * affine2f::rotate(-deg2rad(rotation.value()));
xform = *xform * affine2f::translate(vec2f(-0.5f));
}
// Apply complete transformation
const utility::Optional<linear2f> transf =
getOptParam<linear2f>((texname + "transform").c_str());
if (transf.has_value())
xform = xform.value_or(affine2f(one)) * affine2f(transf.value());
return xform;
}
OSPTYPEFOR_DEFINITION(Material *);
} // namespace ospray
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