void BSSRDF::evaluate_inputs(
const ShadingContext& shading_context,
InputEvaluator& input_evaluator,
const ShadingPoint& shading_point,
const size_t offset) const
{
input_evaluator.evaluate(get_inputs(), shading_point.get_uv(0), offset);
prepare_inputs(input_evaluator.data() + offset);
}
void DisneyLayeredBRDF::evaluate_inputs(
const ShadingContext& shading_context,
InputEvaluator& input_evaluator,
const ShadingPoint& shading_point,
const size_t offset) const
{
char* ptr = reinterpret_cast<char*>(input_evaluator.data());
DisneyBRDFInputValues* values = reinterpret_cast<DisneyBRDFInputValues*>(ptr + offset);
memset(values, 0, sizeof(DisneyBRDFInputValues));
Color3d base_color(0.0);
for (size_t i = 0, e = m_parent->get_layer_count(); i < e; ++i)
{
const DisneyMaterialLayer& layer =
m_parent->get_layer(i, shading_context.get_thread_index());
layer.evaluate_expressions(
shading_point,
shading_context.get_oiio_texture_system(),
base_color,
*values);
}
// Colors in SeExpr are always in the sRGB color space.
base_color = srgb_to_linear_rgb(base_color);
values->m_base_color = Color3f(base_color);
values->precompute_tint_color();
}
void BSDF::evaluate_inputs(
InputEvaluator& input_evaluator,
const ShadingPoint& shading_point,
const size_t offset) const
{
input_evaluator.evaluate(get_inputs(), shading_point.get_uv(0), offset);
}
void EDF::evaluate_inputs(
InputEvaluator& input_evaluator,
const ShadingPoint& shading_point) const
{
input_evaluator.evaluate(get_inputs(), shading_point.get_uv(0));
}
T get_value(const InputEvaluator& input_evaluator, const size_t offset)
{
const uint8* base = static_cast<const uint8*>(input_evaluator.data());
return *reinterpret_cast<const T*>(base + offset);
}
