This module contains the Iray API components representing the MDL compiler, its backends and the generated target code. More...
Classes | |
| class | mi::neuraylib::IMdl_backend |
| MDL backends allow to transform compiled material instances or function calls into target code. More... | |
| class | mi::neuraylib::ITarget_resource_callback |
| A callback interface to allow the user to handle resources when creating new mi::neuraylib::ITarget_argument_block objects for class-compiled materials when the arguments contain textures not known during compilation. More... | |
| class | mi::neuraylib::ITarget_argument_block |
| Represents an argument block of a class-compiled material compiled for a specific target. More... | |
| struct | mi::neuraylib::Target_value_layout_state |
| Structure representing the state during traversal of the nested layout. More... | |
| class | mi::neuraylib::ITarget_value_layout |
| Represents the layout of an mi::neuraylib::ITarget_argument_block with support for nested elements. More... | |
| class | mi::neuraylib::ITarget_code |
| Represents target code of an MDL backend. More... | |
| class | mi::neuraylib::ILink_unit |
| Represents a link-unit of an MDL backend. More... | |
| struct | mi::neuraylib::Target_function_description |
| Description of target function. More... | |
| struct | mi::neuraylib::tct_deriv<T> |
| A template struct with derivatives. More... | |
| struct | mi::neuraylib::tct_traits<with_derivatives> |
| Helper traits struct to switch between derivative and non-derivative types. More... | |
| struct | mi::neuraylib::Shading_state_environment |
| The MDL environment state structure inside the MDL SDK is a representation of the renderer state in the context of an environment lookup as defined in section 19 "Renderer state" in the MDL specification. More... | |
| struct | mi::neuraylib::Shading_state_material_impl<with_derivatives> |
| The MDL material state structure inside the MDL SDK is a representation of the renderer state as defined in section 19 "Renderer state" in the MDL specification. More... | |
| struct | mi::neuraylib::Texture_handler_vtable_impl<with_derivatives> |
| The runtime for bitmap texture access for the generated target code can optionally be implemented in form of a vtable as specified by this structure. More... | |
| struct | mi::neuraylib::Texture_handler_base |
| The texture handler structure that is passed to the texturing functions. More... | |
| struct | mi::neuraylib::Texture_handler_deriv_base |
| The texture handler structure that is passed to the texturing functions with derivative support. More... | |
| struct | mi::neuraylib::Resource_data |
| The data structure providing access to resources for generated code. More... | |
| struct | mi::neuraylib::Bsdf_sample_data |
| Input and output structure for BSDF sampling data. More... | |
| struct | mi::neuraylib::Bsdf_evaluate_data_base |
| Input and output structure for BSDF evaluation data. More... | |
| struct | mi::neuraylib::Bsdf_pdf_data |
| Input and output structure for BSDF PDF calculation data. More... | |
| struct | mi::neuraylib::Bsdf_auxiliary_data_base |
| Input and output structure for BSDF auxiliary calculation data. More... | |
| struct | mi::neuraylib::Edf_sample_data |
| Input and output structure for EDF sampling data. More... | |
| struct | mi::neuraylib::Edf_evaluate_data_base |
| Input and output structure for EDF evaluation data. More... | |
| struct | mi::neuraylib::Edf_pdf_data |
| Input and output structure for EDF PDF calculation data. More... | |
| struct | mi::neuraylib::Edf_auxiliary_data_base |
| Input and output structure for EDF auxiliary calculation data. More... | |
Macros | |
| #define | MI_NEURAYLIB_BSDF_USE_MATERIAL_IOR (-1.0f) |
The calling code can mark the x component of an IOR field in *_data with | |
Functions | |
| virtual Sint32 | mi::neuraylib::IMdl_backend::set_option (const char *name, const char *value)=0 |
| Sets a backend option. More... | |
| virtual Sint32 | mi::neuraylib::IMdl_backend::set_option_binary (const char *name, const char *data, Size size)=0 |
| Sets a binary backend option. More... | |
| virtual const Uint8 * | mi::neuraylib::IMdl_backend::get_device_library (Size &size) const =0 |
| Returns the representation of a device library for this backend if one exists. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::translate_environment (ITransaction *transaction, const IFunction_call *call, const char *fname, IMdl_execution_context *context)=0 |
| Transforms an MDL environment function call into target code. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::translate_material_expression (ITransaction *transaction, const ICompiled_material *material, const char *path, const char *fname, IMdl_execution_context *context)=0 |
| Transforms an expression that is part of an MDL material instance to target code. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::translate_material_df (ITransaction *transaction, const ICompiled_material *material, const char *path, const char *base_fname, IMdl_execution_context *context)=0 |
| Transforms an MDL distribution function to target code. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::translate_material (ITransaction *transaction, const ICompiled_material *material, Target_function_description *function_descriptions, Size description_count, IMdl_execution_context *context)=0 |
| Transforms (multiple) distribution functions and expressions of a material to target code. More... | |
| virtual ILink_unit * | mi::neuraylib::IMdl_backend::create_link_unit (ITransaction *transaction, IMdl_execution_context *context)=0 |
| Creates a new link unit. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::translate_link_unit (const ILink_unit *lu, IMdl_execution_context *context)=0 |
| Transforms a link unit to target code. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::deserialize_target_code (ITransaction *transaction, const IBuffer *buffer, IMdl_execution_context *context) const =0 |
Restores an instance of ITarget_code from a buffer. More... | |
| virtual const ITarget_code * | mi::neuraylib::IMdl_backend::deserialize_target_code (ITransaction *transaction, const Uint8 *buffer_data, Size buffer_size, IMdl_execution_context *context) const =0 |
Restores an instance of ITarget_code from a buffer. More... | |
| virtual Uint32 | mi::neuraylib::ITarget_resource_callback::get_resource_index (IValue_resource const *resource)=0 |
| Returns a resource index for the given resource value usable by the target code resource handler for the corresponding resource type. More... | |
| virtual Uint32 | mi::neuraylib::ITarget_resource_callback::get_string_index (IValue_string const *s)=0 |
| Returns a string identifier for the given string value usable by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_argument_block::get_data () const =0 |
| Returns the target argument block data. More... | |
| virtual char * | mi::neuraylib::ITarget_argument_block::get_data ()=0 |
| Returns the target argument block data. More... | |
| virtual Size | mi::neuraylib::ITarget_argument_block::get_size () const =0 |
| Returns the size of the target argument block data. More... | |
| virtual ITarget_argument_block * | mi::neuraylib::ITarget_argument_block::clone () const =0 |
| Clones the argument block (to make it writable). More... | |
| virtual Size | mi::neuraylib::ITarget_value_layout::get_size () const =0 |
| Returns the size of the target argument block. More... | |
| virtual Size | mi::neuraylib::ITarget_value_layout::get_num_elements (Target_value_layout_state state=Target_value_layout_state()) const =0 |
| Get the number of arguments / elements at the given layout state. More... | |
| virtual Size | mi::neuraylib::ITarget_value_layout::get_layout (IValue::Kind &kind, Size &arg_size, Target_value_layout_state state=Target_value_layout_state()) const =0 |
| Get the offset, the size and the kind of the argument / element inside the argument block at the given layout state. More... | |
| virtual Target_value_layout_state | mi::neuraylib::ITarget_value_layout::get_nested_state (Size i, Target_value_layout_state state=Target_value_layout_state()) const =0 |
| Get the layout state for the i'th argument / element inside the argument value block at the given layout state. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_value_layout::set_value (char *block, IValue const *value, ITarget_resource_callback *resource_callback, Target_value_layout_state state=Target_value_layout_state()) const =0 |
| Set the value inside the given block at the given layout state. More... | |
| virtual IMdl_backend_api::Mdl_backend_kind | mi::neuraylib::ITarget_code::get_backend_kind () const =0 |
| Returns the kind of backend this information belongs to. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_code () const =0 |
| Returns the represented target code in ASCII representation. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_code_size () const =0 |
| Returns the length of the represented target code. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_callable_function_count () const =0 |
| Returns the number of callable functions in the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_callable_function (Size index) const =0 |
| Returns the name of a callable function in the target code. More... | |
| virtual Sint32 | mi::neuraylib::ILink_unit::add_material_expression (const ICompiled_material *inst, const char *path, const char *fname, IMdl_execution_context *context)=0 |
| Add an expression that is part of an MDL material instance as a function to this link unit. More... | |
| virtual Sint32 | mi::neuraylib::ILink_unit::add_material_df (const ICompiled_material *material, const char *path, const char *base_fname, IMdl_execution_context *context)=0 |
| Add an MDL distribution function to this link unit. More... | |
| virtual Sint32 | mi::neuraylib::ILink_unit::add_material (const ICompiled_material *material, Target_function_description *function_descriptions, Size description_count, IMdl_execution_context *context)=0 |
| Add (multiple) MDL distribution functions and expressions of a material to this link unit. More... | |
| virtual Sint32 | mi::neuraylib::ILink_unit::add_function (const IFunction_call *call, Function_execution_context fexc, const char *fname, IMdl_execution_context *context=0)=0 |
| Add an MDL function call as a function to this link unit. More... | |
| virtual Sint32 | mi::neuraylib::ILink_unit::add_function (const IFunction_definition *function, Function_execution_context fexc, const char *fname, IMdl_execution_context *context)=0 |
| Add an MDL function definition as a function to this link unit. More... | |
Variables | |
| mi::Uint32 | mi::neuraylib::Target_value_layout_state::m_state_offs |
| The offset inside the layout state structure. More... | |
| mi::Uint32 | mi::neuraylib::Target_value_layout_state::m_data_offs |
| The offset which needs to be added to the element data offset. More... | |
| const char * | mi::neuraylib::Target_function_description::path |
The path from the material root to the expression that should be translated, e.g., "surface.scattering". More... | |
| const char * | mi::neuraylib::Target_function_description::base_fname |
| The base name of the generated functions. More... | |
| Size | mi::neuraylib::Target_function_description::argument_block_index |
| The index of argument block that belongs to the compiled material the function is generated from or ~0 if none of the added function required arguments. More... | |
| Size | mi::neuraylib::Target_function_description::function_index |
| The index of the generated function for accessing the callable function information of the link unit or ~0 if the selected function is an invalid distribution function. More... | |
| ITarget_code::Distribution_kind | mi::neuraylib::Target_function_description::distribution_kind |
| Return the distribution kind of this function (or NONE in case expressions). More... | |
| Sint32 | mi::neuraylib::Target_function_description::return_code |
| A return code. More... | |
Textures | |
| virtual Size | mi::neuraylib::ITarget_code::get_texture_count () const =0 |
| Returns the number of texture resources used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_texture (Size index) const =0 |
| Returns the name of a texture resource used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_texture_url (Size index) const =0 |
| Returns the MDL file path of a texture resource used by the target code if no database element is associated to the resource. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_texture_owner_module (Size index) const =0 |
| Returns the owner module name of a relative texture file path. More... | |
| virtual bool | mi::neuraylib::ITarget_code::get_texture_is_body_resource (Size index) const =0 |
| Check whether the texture resource is coming from the body of expressions (not solely from material arguments). More... | |
| virtual Gamma_mode | mi::neuraylib::ITarget_code::get_texture_gamma (Size index) const =0 |
| Returns the gamma mode of a texture resource used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_texture_selector (Size index) const =0 |
| Returns the selector mode of a texture resource used by the target code. More... | |
| virtual Texture_shape | mi::neuraylib::ITarget_code::get_texture_shape (Size index) const =0 |
| Returns the texture shape of a given texture resource used by the target code. More... | |
| virtual Df_data_kind | mi::neuraylib::ITarget_code::get_texture_df_data_kind (Size index) const =0 |
| Returns the distribution function data kind of a given texture resource used by the target code. More... | |
| virtual const Float32 * | mi::neuraylib::ITarget_code::get_texture_df_data (Size index, Size &rx, Size &ry, Size &rz) const =0 |
| Returns the distribution function data this texture refers to. More... | |
Light profiles | |
| virtual Size | mi::neuraylib::ITarget_code::get_light_profile_count () const =0 |
| Returns the number of light profile resources used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_light_profile (Size index) const =0 |
| Returns the name of a light profile resource used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_light_profile_url (Size index) const =0 |
| Returns the MDL file path of a light profile resource used by the target code if no database element is associated to the resource. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_light_profile_owner_module (Size index) const =0 |
| Returns the owner module name of a relative light profile file path. More... | |
| virtual bool | mi::neuraylib::ITarget_code::get_light_profile_is_body_resource (Size index) const =0 |
| Check whether the light profile resource is coming from the body of expressions (not solely from material arguments). More... | |
BSDF measurements | |
| virtual Size | mi::neuraylib::ITarget_code::get_bsdf_measurement_count () const =0 |
| Returns the number of bsdf measurement resources used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_bsdf_measurement (Size index) const =0 |
| Returns the name of a bsdf measurement resource used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_bsdf_measurement_url (Size index) const =0 |
| Returns the MDL file path of a BSDF measurement resource used by the target code if no database element is associated to the resource. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_bsdf_measurement_owner_module (Size index) const =0 |
| Returns the owner module name of a relative BSDF measurement file path. More... | |
| virtual bool | mi::neuraylib::ITarget_code::get_bsdf_measurement_is_body_resource (Size index) const =0 |
| Check whether the BSDF measurement resource is coming from the body of expressions (not solely from material arguments). More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_ro_data_segment_count () const =0 |
| Returns the number of constant data initializers. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_ro_data_segment_name (Size index) const =0 |
| Returns the name of the constant data segment at the given index. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_ro_data_segment_size (Size index) const =0 |
| Returns the size of the constant data segment at the given index. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_ro_data_segment_data (Size index) const =0 |
| Returns the data of the constant data segment at the given index. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_code_segment_count () const =0 |
| Returns the number of code segments of the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_code_segment (Size index) const =0 |
| Returns the represented target code segment in ASCII representation. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_code_segment_size (Size index) const =0 |
| Returns the length of the represented target code segment. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_code_segment_description (Size index) const =0 |
| Returns the description of the target code segment. More... | |
| virtual State_usage | mi::neuraylib::ITarget_code::get_render_state_usage () const =0 |
| Returns the potential render state usage of the target code. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_argument_block_count () const =0 |
| Returns the number of target argument blocks. More... | |
| virtual const ITarget_argument_block * | mi::neuraylib::ITarget_code::get_argument_block (Size index) const =0 |
| Get a target argument block if available. More... | |
| virtual ITarget_argument_block * | mi::neuraylib::ITarget_code::create_argument_block (Size index, const ICompiled_material *material, ITarget_resource_callback *resource_callback) const =0 |
| Create a new target argument block of the class-compiled material for this target code. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_argument_layout_count () const =0 |
| Returns the number of target argument block layouts. More... | |
| virtual const ITarget_value_layout * | mi::neuraylib::ITarget_code::get_argument_block_layout (Size index) const =0 |
| Get a captured arguments block layout if available. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_string_constant_count () const =0 |
| Returns the number of string constants used by the target code. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_string_constant (Size index) const =0 |
| Returns the string constant used by the target code. More... | |
| virtual Uint32 | mi::neuraylib::ITarget_code::get_known_resource_index (ITransaction *transaction, IValue_resource const *resource) const =0 |
Returns the resource index for use in an ITarget_argument_block of resources already known when this ITarget_code object was generated. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_callable_function_prototype (Size index, Prototype_language lang) const =0 |
| Returns the prototype of a callable function in the target code. More... | |
| virtual Distribution_kind | mi::neuraylib::ITarget_code::get_callable_function_distribution_kind (Size index) const =0 |
| Returns the distribution kind of a callable function in the target code. More... | |
| virtual Function_kind | mi::neuraylib::ITarget_code::get_callable_function_kind (Size index) const =0 |
| Returns the function kind of a callable function in the target code. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_callable_function_argument_block_index (Size index) const =0 |
| Get the index of the target argument block to use with a callable function. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_environment (Size index, const Shading_state_environment &state, Texture_handler_base *tex_handler, Spectrum_struct *result) const =0 |
| Run this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute (Size index, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args, void *result) const =0 |
| Run this code on the native CPU with the given captured arguments block. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_bsdf_init (Size index, Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the BSDF init function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_bsdf_sample (Size index, Bsdf_sample_data *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the BSDF sample function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_bsdf_evaluate (Size index, Bsdf_evaluate_data_base *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the BSDF evaluation function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_bsdf_pdf (Size index, Bsdf_pdf_data *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the BSDF PDF calculation function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_bsdf_auxiliary (Size index, Bsdf_auxiliary_data_base *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the BSDF auxiliary calculation function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_edf_init (Size index, Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the EDF init function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_edf_sample (Size index, Edf_sample_data *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the EDF sample function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_edf_evaluate (Size index, Edf_evaluate_data_base *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the EDF evaluation function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_edf_pdf (Size index, Edf_pdf_data *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the EDF PDF calculation function for this code on the native CPU. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_edf_auxiliary (Size index, Edf_auxiliary_data_base *data, const Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the EDF auxiliary calculation function for this code on the native CPU. More... | |
| virtual Size | mi::neuraylib::ITarget_code::get_callable_function_df_handle_count (Size func_index) const =0 |
| Get the number of distribution function handles referenced by a callable function. More... | |
| virtual const char * | mi::neuraylib::ITarget_code::get_callable_function_df_handle (Size func_index, Size handle_index) const =0 |
| Get the name of a distribution function handle referenced by a callable function. More... | |
| virtual bool | mi::neuraylib::ITarget_code::supports_serialization () const =0 |
| Indicates whether the target code can be serialized. More... | |
| virtual const IBuffer * | mi::neuraylib::ITarget_code::serialize (IMdl_execution_context *context) const =0 |
| Stores the data of this object in a buffer that can written to an external cache. More... | |
| virtual State_usage | mi::neuraylib::ITarget_code::get_callable_function_render_state_usage (Size index) const =0 |
| Returns the potential render state usage of callable function in the target code. More... | |
| virtual Sint32 | mi::neuraylib::ITarget_code::execute_init (Size index, Shading_state_material &state, Texture_handler_base *tex_handler, const ITarget_argument_block *cap_args) const =0 |
| Run the init function for this code on the native CPU (single-init mode). More... | |
| virtual Size MI_NEURAYLIB_DEPRECATED_METHOD_14_0() | mi::neuraylib::ITarget_code::get_body_texture_count () const =0 |
| virtual Size MI_NEURAYLIB_DEPRECATED_METHOD_14_0() | mi::neuraylib::ITarget_code::get_body_light_profile_count () const =0 |
| virtual Size MI_NEURAYLIB_DEPRECATED_METHOD_14_0() | mi::neuraylib::ITarget_code::get_body_bsdf_measurement_count () const =0 |
This module contains the Iray API components representing the MDL compiler, its backends and the generated target code.
The backends can be obtained via the MDL backend API from mi::neuraylib::IMdl_backend_api::get_backend().
| #define MI_NEURAYLIB_BSDF_USE_MATERIAL_IOR (-1.0f) |
The calling code can mark the x component of an IOR field in *_data with
| typedef void() mi::neuraylib::Bsdf_auxiliary_function(Bsdf_auxiliary_data_base *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the auxiliary function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_auxiliary_function_with_derivs(Bsdf_auxiliary_data_base *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the auxiliary function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_evaluate_function(Bsdf_evaluate_data_base *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the evaluation function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_evaluate_function_with_derivs(Bsdf_evaluate_data_base *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the evaluation function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_init_function(Shading_state_material *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the initialization function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_init_function_with_derivs(Shading_state_material_with_derivs *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the initialization function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_pdf_function(Bsdf_pdf_data *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the probability density function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_pdf_function_with_derivs(Bsdf_pdf_data *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the probability density function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_sample_function(Bsdf_sample_data *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the importance sampling function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Bsdf_sample_function_with_derivs(Bsdf_sample_data *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the importance sampling function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_auxiliary_function(Edf_auxiliary_data_base *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the auxiliary function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_auxiliary_function_with_derivs(Edf_auxiliary_data_base *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the auxiliary function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_evaluate_function(Edf_evaluate_data_base *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the evaluation function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_evaluate_function_with_derivs(Edf_evaluate_data_base *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the evaluation function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_init_function(Shading_state_material *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the initialization function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_init_function_with_derivs(Shading_state_material_with_derivs *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the initialization function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_pdf_function(Edf_pdf_data *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the probability density function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_pdf_function_with_derivs(Edf_pdf_data *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the probability density function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_sample_function(Edf_sample_data *data, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the importance sampling function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Edf_sample_function_with_derivs(Edf_sample_data *data, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of the importance sampling function for material distribution functions created via mi::neuraylib::IMdl_backend::translate_material_df() and mi::neuraylib::ILink_unit::add_material_df().
| data | the input and output structure |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Environment_function(void *result, Shading_state_environment const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of environment functions created via mi::neuraylib::IMdl_backend::translate_environment() and mi::neuraylib::ILink_unit::add_function().
| result | pointer to the result buffer which must be large enough for the result |
| state | the shading state |
| res_data | the resources |
| arg_block_data | unused, should be NULL |
| typedef void() mi::neuraylib::Material_expr_function(void *result, Shading_state_material const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of material expression functions created via mi::neuraylib::IMdl_backend::translate_material_expression() and mi::neuraylib::ILink_unit::add_material_expression().
| result | pointer to the result buffer which must be large enough for the result |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef void() mi::neuraylib::Material_expr_function_with_derivs(void *result, Shading_state_material_with_derivs const *state, Resource_data const *res_data, char const *arg_block_data) |
Signature of material expression functions created via mi::neuraylib::IMdl_backend::translate_material_expression() and mi::neuraylib::ILink_unit::add_material_expression().
| result | pointer to the result buffer which must be large enough for the result |
| state | the shading state |
| res_data | the resources |
| arg_block_data | the target argument block data, if class compilation was used |
| typedef struct Shading_state_material_impl<false> mi::neuraylib::Shading_state_material |
The MDL material state structure.
| typedef struct Shading_state_material_impl<true> mi::neuraylib::Shading_state_material_with_derivs |
The MDL material state structure with derivatives for the texture coordinates.
| typedef bool mi::neuraylib::tct_bool |
A bool.
| typedef tct_deriv<float[2]> mi::neuraylib::tct_deriv_arr_float_2 |
A float[2] with derivatives (needed to avoid problems with wrong alignment).
| typedef tct_deriv<float[3]> mi::neuraylib::tct_deriv_arr_float_3 |
A float[3] with derivatives (needed to avoid problems with wrong alignment).
| typedef tct_deriv<float[4]> mi::neuraylib::tct_deriv_arr_float_4 |
A float[4] with derivatives (needed to avoid problems with wrong alignment).
| typedef tct_traits<true>::tct_derivable_float mi::neuraylib::tct_deriv_float |
A float with derivatives.
| typedef tct_traits<true>::tct_derivable_float2 mi::neuraylib::tct_deriv_float2 |
A float2 with derivatives.
| typedef tct_traits<true>::tct_derivable_float3 mi::neuraylib::tct_deriv_float3 |
A float3 with derivatives.
| typedef tct_traits<true>::tct_derivable_float4 mi::neuraylib::tct_deriv_float4 |
A float4 with derivatives.
| typedef float mi::neuraylib::tct_float |
A float.
A float2.
A float3.
A float4.
| typedef mi::Sint32 mi::neuraylib::tct_int |
An int.
| typedef mi::Uint32 mi::neuraylib::tct_uint |
An unsigned int.
The texture handler vtable struct with derivatives for the texture coordinates.
| typedef Texture_handler_vtable_impl<false> mi::neuraylib::Texture_handler_vtable |
The texture handler vtable struct.
The type of events created by BSDF importance sampling.
Type of Bsdf_evaluate_data variants, depending on the backend and its configuration.
| Enumerator | |
|---|---|
| DF_HSM_POINTER | Uses renderer defined buffers; not supported by all backends. |
| DF_HSM_NONE | No slots, handles are ignored completely. |
| DF_HSM_FIXED_1 | fixed size array for processing 1 handle at a time |
| DF_HSM_FIXED_2 | fixed size array for processing 2 handle at a time |
| DF_HSM_FIXED_4 | fixed size array for processing 4 handle at a time |
| DF_HSM_FIXED_8 | fixed size array for processing 8 handle at a time |
Possible kinds of distribution functions.
The type of events created by EDF importance sampling.
Execution context for functions.
| Enumerator | |
|---|---|
| FEC_ENVIRONMENT | This function will be executed inside the environment. |
| FEC_CORE | This function will be executed in the renderer core. |
| FEC_DISPLACEMENT | This function will be executed inside displacement. |
Possible kinds of callable functions.
Possible texture gamma modes.
MBSDFs can consist of two parts, which can be selected using this enumeration.
| Enumerator | |
|---|---|
| MBSDF_DATA_REFLECTION | the bidirectional reflection distribution function (BRDF) |
| MBSDF_DATA_TRANSMISSION | the bidirectional transmission distribution function (BTDF) |
Language to use for the callable function prototype.
The potential state usage properties.
| Enumerator | |
|---|---|
| SU_POSITION | uses state::position() |
| SU_NORMAL | uses state::normal() |
| SU_GEOMETRY_NORMAL | uses state::geometry_normal() |
| SU_MOTION | uses state::motion() |
| SU_TEXTURE_COORDINATE | uses state::texture_coordinate() |
| SU_TEXTURE_TANGENTS | uses state::texture_tangent_*() |
| SU_TANGENT_SPACE | uses state::tangent_space() |
| SU_GEOMETRY_TANGENTS | uses state::geometry_tangent_*() |
| SU_DIRECTION | uses state::direction() |
| SU_ANIMATION_TIME | uses state::animation_time() |
| SU_ROUNDED_CORNER_NORMAL | uses state::rounded_corner_normal() |
| SU_ALL_VARYING_MASK | set of varying states |
| SU_TRANSFORMS | uses uniform state::transform*() |
| SU_OBJECT_ID | uses uniform state::object_id() |
| SU_ALL_UNIFORM_MASK | set of uniform states |
The texture wrap modes as defined by tex::wrap_mode in the MDL specification.
It determines the texture lookup behavior if a lookup coordinate is exceeding the normalized half-open texture space range of [0, 1).
| Enumerator | |
|---|---|
| TEX_WRAP_CLAMP |
|
| TEX_WRAP_REPEAT |
|
| TEX_WRAP_MIRRORED_REPEAT |
|
| TEX_WRAP_CLIP |
|
|
pure virtual |
Add an MDL function call as a function to this link unit.
| call | The MDL function call. | |
| fexc | The context from which this function will be called. | |
| fname | The name of the function that is created. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. Currently, no options are supported by this operation. During material compilation messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
|
pure virtual |
Add an MDL function definition as a function to this link unit.
| function | The MDL function definition. | |
| fexc | The context from which this function will be called. | |
| fname | The name of the function that is created. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. Currently, no options are supported by this operation. During material compilation messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
|
pure virtual |
Add (multiple) MDL distribution functions and expressions of a material to this link unit.
Functions can be selected by providing a list of Target_function_descriptions. If the first function in the list uses the path "init", one init function will be generated, precalculating values which will be used by the other requested functions. Each other entry in the list needs to define the path, the root of the expression that should be translated. For each distribution function it results in three or four functions, suffixed with "_init" (if first requested path was not "init"), "_sample", "_evaluate", and "_pdf". After calling this function, each element of the list will contain information for later usage in the application, e.g., the argument_block_index and the function_index.
| material | The compiled MDL material. | |
| [in,out] | function_descriptions | The list of descriptions of function to translate. |
| description_count | The size of the list of descriptions. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported for this operation:
NULL. |
|
pure virtual |
Add an MDL distribution function to this link unit.
For a BSDF it results in four functions, suffixed with "_init", "_sample", "_evaluate" and "_pdf".
| material | The compiled MDL material. | |
| path | The path from the material root to the expression that should be translated, e.g., "surface.scattering". | |
| base_fname | The base name of the generated functions. If NULL is passed, "lambda" will be used. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported for this operation:
NULL. Possible error conditions:
|
|
pure virtual |
Add an expression that is part of an MDL material instance as a function to this link unit.
| inst | The compiled MDL material instance. | |
| path | The path from the material root to the expression that should be translated, e.g., "geometry.displacement". | |
| fname | The name of the function that is created. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. Currently, no options are supported by this operation. During material compilation messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
|
pure virtual |
Clones the argument block (to make it writable).
|
pure virtual |
Create a new target argument block of the class-compiled material for this target code.
| index | The index of the base target argument block of this target code. |
| material | The class-compiled MDL material which has to fit to this ITarget_code, i.e. the hash of the compiled material must be identical to the one used to generate this ITarget_code. |
| resource_callback | Callback for retrieving resource indices for resource values. |
NULL if no arguments were captured or the index was invalid.
|
pure virtual |
Creates a new link unit.
| transaction | The transaction to be used. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported for this operation:
|
NULL in case of failure.
|
pure virtual |
Restores an instance of ITarget_code from a buffer.
Deserialization can fail for outdated input date, which is not an error. Check the context messages for details.
| transaction | The transaction to be used. | |
| buffer | The buffer containing the serialized target code to restore. | |
| [in,out] | context | An execution context which can be used to pass serialization options. Currently there are no options supported for this operation. During the serialization messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
NULL otherwise.
|
pure virtual |
Restores an instance of ITarget_code from a buffer.
Deserialization can fail for outdated input date, which is not an error. Check the context messages for details.
| transaction | The transaction to be used. | |
| buffer_data | The buffer containing the serialized target code to restore. | |
| buffer_size | The size of buffer_data. | |
| [in,out] | context | An execution context which can be used to pass serialization options. Currently there are no options supported for this operation. During the serialization messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
NULL otherwise.
|
pure virtual |
Run this code on the native CPU with the given captured arguments block.
| [in] | index | The index of the callable function. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object will be used, if any. |
| [out] | result | The result will be written to. |
|
pure virtual |
Run the BSDF auxiliary calculation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the BSDF auxiliary calculation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the BSDF evaluation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the BSDF evaluation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the BSDF init function for this code on the native CPU.
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| [in] | index | The index of the callable function. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the BSDF PDF calculation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the BSDF PDF calculation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the BSDF sample function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the BSDF sampling. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the EDF auxiliary calculation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the EDF auxiliary calculation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the EDF evaluation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the EDF evaluation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the EDF init function for this code on the native CPU.
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| [in] | index | The index of the callable function. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the EDF PDF calculation function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the EDF PDF calculation. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run the EDF sample function for this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in,out] | data | The input and output fields for the EDF sampling. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Run this code on the native CPU.
| [in] | index | The index of the callable function. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [out] | result | The result will be written to. |
|
pure virtual |
Run the init function for this code on the native CPU (single-init mode).
This function updates the normal field of the shading state with the result of "geometry.normal" and, if the "num_texture_results" backend option has been set to non-zero, fills the text_results fields of the state.
| [in] | index | The index of the callable function. |
| [in] | state | The core state. |
| [in] | tex_handler | Texture handler containing the vtable for the user-defined texture lookup functions. Can be NULL if the built-in resource handler is used. |
| [in] | cap_args | The captured arguments to use for the execution. If cap_args is NULL, the captured arguments of this ITarget_code object for the given callable function will be used, if any. |
|
pure virtual |
Get a target argument block if available.
| index | The index of the target argument block. |
NULL if no arguments were captured or the index was invalid.
|
pure virtual |
Returns the number of target argument blocks.
|
pure virtual |
Get a captured arguments block layout if available.
| index | The index of the target argument block. |
NULL if no arguments were captured or the index was invalid.
|
pure virtual |
Returns the number of target argument block layouts.
|
pure virtual |
Returns the kind of backend this information belongs to.
|
pure virtual |
Returns the name of a bsdf measurement resource used by the target code.
| index | The index of the BSDF measurement resource. |
NULL if index is out of range.
|
pure virtual |
Returns the number of bsdf measurement resources used by the target code.
|
pure virtual |
Check whether the BSDF measurement resource is coming from the body of expressions (not solely from material arguments).
It will be necessary regardless of the chosen material arguments.
| index | The index of the BSDF measurement resource. |
true if the BSDF measurement is referenced from inside the material body.
|
pure virtual |
Returns the owner module name of a relative BSDF measurement file path.
| index | The index of the BSDF measurement resource. |
NULL if index is out of range or the owner module is not provided.
|
pure virtual |
Returns the MDL file path of a BSDF measurement resource used by the target code if no database element is associated to the resource.
| index | The index of the BSDF measurement resource. |
NULL if index is out of range or the BSDF measurement exists in the database.
|
pure virtual |
Returns the name of a callable function in the target code.
The name of a callable function is specified via the fname parameter of mi::neuraylib::IMdl_backend::translate_environment() and mi::neuraylib::IMdl_backend::translate_material_expression().
| index | The index of the callable function. |
index -th callable function, or NULL if index is out of bounds.
|
pure virtual |
Get the index of the target argument block to use with a callable function.
| index | The index of the callable function. |
|
pure virtual |
Returns the number of callable functions in the target code.
|
pure virtual |
Get the name of a distribution function handle referenced by a callable function.
| func_index | The index of the callable function. |
| handle_index | The index of the handle. |
NULL, if the callable function is not a distribution function or index is invalid.
|
pure virtual |
Get the number of distribution function handles referenced by a callable function.
| func_index | The index of the callable function. |
0, if the callable function is not a distribution function.
|
pure virtual |
Returns the distribution kind of a callable function in the target code.
| index | The index of the callable function. |
index was invalid.
|
pure virtual |
Returns the function kind of a callable function in the target code.
| index | The index of the callable function. |
index was invalid.
|
pure virtual |
Returns the prototype of a callable function in the target code.
| index | The index of the callable function. |
| lang | The language to use for the prototype. |
NULL if index is out of bounds or lang cannot be used for this target code.
|
pure virtual |
Returns the potential render state usage of callable function in the target code.
If the corresponding property bit is not set, it is guaranteed that the code does not use the associated render state property.
0 if index was invalid.
|
pure virtual |
Returns the represented target code in ASCII representation.
|
pure virtual |
Returns the represented target code segment in ASCII representation.
| index | The index of the code segment. |
NULL if the index is out of bounds.
|
pure virtual |
Returns the number of code segments of the target code.
|
pure virtual |
Returns the description of the target code segment.
| index | The index of the code segment. |
NULL if the index is out of bounds. Returns the length of the represented target code segment.
| index | The index of the code segment. |
0 if the index is out of bounds.
|
pure virtual |
Returns the length of the represented target code.
|
pure virtual |
Returns the target argument block data.
|
pure virtual |
Returns the target argument block data.
|
pure virtual |
Returns the representation of a device library for this backend if one exists.
| [out] | size | The size of the library. |
NULL if no library exists for this backend.
|
pure virtual |
Returns the resource index for use in an ITarget_argument_block of resources already known when this ITarget_code object was generated.
| transaction | Transaction to retrieve resource names from tags. |
| resource | The resource value. |
|
pure virtual |
Get the offset, the size and the kind of the argument / element inside the argument block at the given layout state.
| [out] | kind | Receives the kind of the argument. |
| [out] | arg_size | Receives the size of the argument. |
| state | The layout state representing the current nesting within the argument value block. The default value is used for the top-level. |
"~mi::Size(0)" if the state is invalid.
|
pure virtual |
Returns the name of a light profile resource used by the target code.
| index | The index of the texture resource. |
NULL if index is out of range.
|
pure virtual |
Returns the number of light profile resources used by the target code.
|
pure virtual |
Check whether the light profile resource is coming from the body of expressions (not solely from material arguments).
It will be necessary regardless of the chosen material arguments.
| index | The index of the light profile resource. |
true if the light profile is referenced from inside the material body.
|
pure virtual |
Returns the owner module name of a relative light profile file path.
| index | The index of the light profile resource. |
NULL if index is out of range or the owner module is not provided.
|
pure virtual |
Returns the MDL file path of a light profile resource used by the target code if no database element is associated to the resource.
| index | The index of the light profile resource. |
NULL if index is out of range or the light profile exists in the database.
|
pure virtual |
Get the layout state for the i'th argument / element inside the argument value block at the given layout state.
| i | The index of the argument / element. |
| state | The layout state representing the current nesting within the argument value block. The default value is used for the top-level. |
"~mi::Uint32(0)" as m_state_offs if the element is atomic.
|
pure virtual |
Get the number of arguments / elements at the given layout state.
| state | The layout state representing the current nesting within the argument value block. The default value is used for the top-level. |
|
pure virtual |
Returns the potential render state usage of the target code.
If the corresponding property bit is not set, it is guaranteed that the code does not use the associated render state property.
|
pure virtual |
Returns a resource index for the given resource value usable by the target code resource handler for the corresponding resource type.
The index 0 is always an invalid resource reference. For mi::neuraylib::IValue_texture values, the first indices correspond to the indices used with mi::neuraylib::ITarget_code::get_texture(). For mi::mdl::IValue_light_profile values, the first indices correspond to the indices used with mi::neuraylib::ITarget_code::get_light_profile(). For mi::mdl::IValue_bsdf_measurement values, the first indices correspond to the indices used with mi::neuraylib::ITarget_code::get_bsdf_measurement().
You can use mi::neuraylib::ITarget_code::get_known_resource_index() to handle resources which were known during compilation of the target code object.
See Texture lookup call modes of the PTX backend for more details about texture handlers for the PTX backend.
| resource | the resource value |
|
pure virtual |
Returns the number of constant data initializers.
|
pure virtual |
Returns the data of the constant data segment at the given index.
| index | The index of the data segment. |
NULL if the index is out of bounds.
|
pure virtual |
Returns the name of the constant data segment at the given index.
| index | The index of the data segment. |
NULL if the index is out of bounds. Returns the size of the constant data segment at the given index.
| index | The index of the data segment. |
|
pure virtual |
Returns the size of the target argument block data.
|
pure virtual |
Returns the size of the target argument block.
|
pure virtual |
Returns the string constant used by the target code.
| index | The index of the string constant. |
NULL if index is out of range.
|
pure virtual |
Returns the number of string constants used by the target code.
|
pure virtual |
Returns a string identifier for the given string value usable by the target code.
The value 0 is always the "not known string".
| s | the string value |
|
pure virtual |
Returns the name of a texture resource used by the target code.
| index | The index of the texture resource. |
NULL if index is out of range or the texture does not exist in the database.
|
pure virtual |
Returns the number of texture resources used by the target code.
|
pure virtual |
Returns the distribution function data this texture refers to.
| index | The index of the texture resource. | |
| [out] | rx | The resolution of the texture in x. |
| [out] | ry | The resolution of the texture in y. |
| [out] | rz | The resolution of the texture in z. |
NULL otherwise.
|
pure virtual |
Returns the distribution function data kind of a given texture resource used by the target code.
| index | The index of the texture resource. |
index is out of range.
|
pure virtual |
Returns the gamma mode of a texture resource used by the target code.
| index | The index of the texture resource. |
index is out of range.
|
pure virtual |
Check whether the texture resource is coming from the body of expressions (not solely from material arguments).
It will be necessary regardless of the chosen material arguments.
| index | The index of the texture resource. |
true if the texture is referenced from inside the material body.
|
pure virtual |
Returns the owner module name of a relative texture file path.
| index | The index of the texture resource. |
NULL if index is out of range or the owner module is not provided.
|
pure virtual |
Returns the selector mode of a texture resource used by the target code.
| index | The index of the texture resource. |
NULL if index is out of range or there is no selector for that texture resource.
|
pure virtual |
Returns the texture shape of a given texture resource used by the target code.
| index | The index of the texture resource. |
Texture_shape_invalid if index is out of range.
|
pure virtual |
Returns the MDL file path of a texture resource used by the target code if no database element is associated to the resource.
| index | The index of the texture resource. |
NULL if index is out of range or the texture exists in the database.
|
pure virtual |
Stores the data of this object in a buffer that can written to an external cache.
The object can be restored by a corresponding back-end.
| [in,out] | context | An execution context which can be used to pass serialization options. The following options are supported for this operation:
|
NULL otherwise.
|
pure virtual |
Sets a backend option.
The following options are supported by all backends:
"compile_constants": If true, compile simple constants into functions returning constants. If false, do not compile simple constants but return error -4. Possible values: "on", "off". Default: "on"."fast_math": Enables/disables unsafe floating point optimization. Possible values: "on", "off". Default: "on"."opt_level": Set the optimization level. Possible values:"0": no optimization"1": no inlining, no expensive optimizations"2": full optimizations, including inlining (default)"num_texture_spaces": Set the number of supported texture spaces. Default: "32"."enable_auxiliary": Enable code generation for auxiliary methods on distribution functions. For BSDFs, these compute albedo approximations and normals. For EDFs, the functions exist only as placeholder for future use. Possible values: "on", "off". Default: "off"."enable_pdf": Enable code generation of PDF method on distribution functions. Possible values: "on", "off". Default: "on"."df_handle_slot_mode": When using light path expressions, individual parts of the distribution functions can be selected using "handles". The contribution of each of those parts has to be evaluated during rendering. This option controls how many parts are evaluated with each call into the generated "evaluate" and "auxiliary" functions and how the data is passed. Possible values: "none", "fixed_1", "fixed_2", "fixed_4", "fixed_8", and "pointer", while "pointer" is not available for all backends. Default: "none".The following options are supported by the NATIVE backend only:
"use_builtin_resource_handler": Enables/disables the built-in texture runtime. Possible values: "on", "off". Default: "on".The following options are supported by the PTX, LLVM-IR, native and HLSL backend:
"inline_aggressively": Enables/disables aggressive inlining. Possible values: "on", "off". Default: "off"."eval_dag_ternary_strictly": Enables/disables strict evaluation of ternary operators on the DAG. Possible values: "on", "off". Default: "on"."enable_exceptions": Enables/disables support for exceptions through runtime function calls. For PTX, this options is always treated as disabled. Possible values: "on", "off". Default: "on"."enable_ro_segment": Enables/disables the creation of the read-only data segment calls. Possible values: "on", "off". Default: "off"."num_texture_results": Set the size of the text_results array in the MDL SDK state in number of float4 elements. The array has to be provided by the renderer and must be provided per thread (for example as an array on the stack) and will be filled in the init function created for a material and used by the sample, evaluate and pdf functions, if the size is non-zero. Default: "0"."texture_runtime_with_derivs": Enables/disables derivative support for texture lookup functions. If enabled, the user-provided texture runtime has to provide functions with derivative parameters for the texture coordinates. Possible values: "on", "off". Default: "off"."visible_functions": Comma-separated list of function names which will be visible in the generated code (empty string means no special restriction). Can especially be used in combination with "llvm_renderer_module" binary option to limit the number of functions for which target code will be generated. Default: "" "use_renderer_adapt_normal": If enabled, the generated code expects the renderer to provide a function with the prototype "void adapt_normal(float result[3], Textue_handler_base const *self,
Shading_state_material *state, float const normal[3])" which can adapt the normal of BSDFs. For native: The function must be set in the vtable of the Texture_handler_base object provided to the execute functions. If the built-in texture runtime is used, only the adapt_normal entry of the vtable needs to be set. For HLSL: The expected function is "float3 mdl_adapt_normal(Shading_state_material state, float3 normal)". Possible values: "on", "off". Default: "off".The following options are supported by the PTX and LLVM-IR only:
"lambda_return_mode": Selects how generated lambda functions return their results. Possible value:"default": Use the default mode for the backend, currently always sret mode"sret": Write the result into a buffer provided as first argument"value": Return the value directly. If the type is not supported as return type by the backend, fallback to sret mode. Currently only supports base types and vector types as return types.The following options are supported by the LLVM-IR backend only:
"enable_simd": Enables/disables the use of SIMD instructions. Possible values: "on", "off". Default: "on"."write_bitcode": Enables/disables the creation of the LLVM bitcode instead of LLVM IR. Possible values: "on", "off". Default: "off".The following options are supported by the PTX backend only:
"sm_version": Specifies the SM target version. Possible values: "20", "30", "35", "37", "50", "52", "60", "61", "62". "70", "75", "80", and "86". Default: "20"."enable_ro_segment": Enables/disables the creation of the read-only data segment calls. Possible values: "on", "off". Default: "off"."link_libdevice": Enables/disables linking of libdevice before PTX is generated. Possible values: "on", "off". Default: "on"."output_format": Selects the output format of the backend. Possible values: "PTX", "LLVM-IR", "LLVM-BC". Default: "PTX"."tex_lookup_call_mode": Selects how tex_lookup calls will be generated. See Texture lookup call modes of the PTX backend for more details. Possible values:"vtable": generate calls through a vtable call (default)"direct_call": generate direct function calls"optix_cp": generate calls through OptiX bindless callable programsThe following options are supported by the HLSL backend only:
"hlsl_use_resource_data": If enabled, an extra user define resource data struct is passed to all resource callbacks. Possible values: "on", "off". Default: "off"."hlsl_remap_functions": Specifies a comma separated remap list of MDL functions. The entries must be specified as <old_name>=<new_name>. Both names have to be in mangled form. Default: ""."df_handle_slot_mode": The option "pointer" is not available (see above)."use_renderer_adapt_microfacet_roughness": If enabled, the generated code expects the renderer to provide a function with the prototype x component of the result will be used. Possible values: "on", "off". Default: "off".The following options are supported by the GLSL backend only:
"glsl_version": Specifies the GLSL target version. Possible values for "core" and "compatibility" profiles: "150", "330", "400", "410", "420", "430", "440", "450", "460". Values for the "es" profile: "100", "300", "310". Default: "450"."glsl_profile": Specifies the GLSL target profile. Possible values: "core", "es", "compatibility". Default: "core"."glsl_include_uniform_state": If true, object_id will be included in the state according to the "glsl_state_object_id_mode" option. Possible values: "on", "off". Default: "off" "glsl_max_const_data": Specifies the maximum allowed amount in bytes of constant data for a generated shader by the GLSL backend. If bigger data are necessary, the backend will move it to uniform inputs. Default: "1024"."glsl_place_uniforms_into_ssbo": If true, all generated uniform inputs will be placed into a shader storage buffer object. This option can only be enabled, if the "GL_ARB_shader_storage_buffer_object" extension is enabled. Possible values: "on", "off". Default: "off" "glsl_uniform_ssbo_name": If non-empty, specifies a name for the SSBO buffer containing the uniform initializer if option "glsl_place_uniforms_into_ssbo" is enabled. Possible values: Any valid GLSL identifier. Default: ""."glsl_uniform_ssbo_binding": A GLSL binding attribute expression for the SSBO buffer. Possible values: Currently limited to unsigned literals. Default: "" (Means no "binding" attribute)"glsl_uniform_ssbo_set": A GLSL set attribute expression for the SSBO buffer. Possible values: Currently limited to unsigned literals. Default: "" (Means no "set" attribute)"glsl_remap_functions": Specifies a comma separated remap list of MDL functions. The entries must be specified as <old_name>=<new_name>. Both names have to be in mangled form. Default: ""."glsl_state_animation_time_mode": Specify the implementation mode of state::animation_time(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_geometry_normal_mode": Specify the implementation mode of state::geometry_normal(). Possible values: "field", "arg", "func", "zero". Default: "field"."glsl_state_motion_mode": Specify the implementation mode of state::motion(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_normal_mode": Specify the implementation mode of state::normal(). Possible values: "field", "arg", "func", "zero". Default: "field"."glsl_state_object_id_mode": Specify the implementation mode of state::object_id(). You have to enable "glsl_include_uniform_state" for this mode to have any effect. Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_position_mode": Specify the implementation mode of state::position(). Possible values: "field", "arg", "func", "zero". Default: "field"."glsl_state_texture_coordinate_mode": Specify the implementation mode of state::texture_coordinate(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_texture_space_max_mode": Specify the implementation mode of state::texture_space_max(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_texture_tangent_u_mode": Specify the implementation mode of state::texture_tangent_u(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_texture_tangent_v_mode": Specify the implementation mode of state::texture_tangent_v(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_geometry_tangent_u_mode": Specify the implementation mode of state::geometry_tangent_u(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_state_geometry_tangent_v_mode": Specify the implementation mode of state::geometry_tangent_v(). Possible values: "field", "arg", "func", "zero". Default: "zero"."glsl_enabled_extensions": Specifies the enabled GLSL extensions as a comma separated list. Default: ""."glsl_required_extensions": Specifies the required GLSL extensions as a comma separated list. Default: "".The following extensions are fully supported by the GLSL backend:
"GL_ARB_gpu_shader_fp64" "GL_ARB_shader_atomic_counters" "GL_ARB_shading_language_420pack" "GL_ARB_arrays_of_arrays" The following extensions are partially supported by the GLSL backend:
"GL_OES_texture_3D" "GL_OES_standard_derivatives" "GL_OES_EGL_image_external" "GL_EXT_frag_depth" "GL_EXT_shader_texture_lod" "GL_EXT_shader_implicit_conversions" "GL_ARB_texture_rectangle" "GL_ARB_texture_gather" "GL_ARB_gpu_shader5" "GL_ARB_separate_shader_objects" "GL_ARB_tessellation_shader" "GL_ARB_enhanced_layouts" "GL_ARB_texture_cube_map_array" "GL_ARB_shader_texture_lod" "GL_ARB_explicit_attrib_location" "GL_ARB_shader_image_load_store" "GL_ARB_derivative_control" "GL_ARB_shader_texture_image_samples" "GL_ARB_viewport_array" "GL_ARB_cull_distance" "GL_ARB_shader_subroutine" "GL_ARB_shader_storage_buffer_object" "GL_ARB_bindless_texture" "GL_ARB_gpu_shader_int64" "GL_3DL_array_objects" "GL_KHR_vulkan_glsl" "GL_NV_shader_buffer_load" "GL_NV_half_float" "GL_NV_gpu_shader5" "GL_AMD_gpu_shader_half_float" "GL_GOOGLE_cpp_style_line_directive" "GL_GOOGLE_include_directive" Meaning of the state modes:
"field": access a field of a passed state struct"arg": access an argument of the generated shader"func": call a wrapper function"zero": always zero| name | The name of the option. |
| value | The value of the option. |
|
pure virtual |
Sets a binary backend option.
The following options are supported by the LLVM backends:
"llvm_state_module": Sets a user-defined implementation of the state module."llvm_renderer_module": Sets a user-defined LLVM renderer module which will be linked and optimized together with the generated code.| name | The name of the option. |
| data | The data for the option. If NULL is passed, the option is cleared. |
| size | The size of the data. |
|
pure virtual |
Set the value inside the given block at the given layout state.
| [in,out] | block | The argument value block buffer to be modified. |
| [in] | value | The value to be set. It has to match the expected kind. |
| [in] | resource_callback | Callback for retrieving resource indices for resource values. |
| [in] | state | The layout state representing the current nesting within the argument value block. The default value is used for the top-level. |
NULL pointer.
|
pure virtual |
Indicates whether the target code can be serialized.
Not all back-ends support serialization.
|
pure virtual |
Transforms an MDL environment function call into target code.
The prototype of the resulting function will roughly look like this:
The result buffer must be big enough for the expression result.
| transaction | The transaction to be used. | |
| call | The MDL function call for the environment. | |
| fname | The name of the generated function. If NULL is passed, "lambda" will be used. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported by this operation:
NULL. Possible error conditions:
|
NULL in case of failure.
|
pure virtual |
Transforms a link unit to target code.
| lu | The link unit to translate. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. During material translation, messages like errors and warnings will be passed to the context for later evaluation by the caller. There are currently no options supported by this operation. Can be NULL. Possible error conditions:
|
NULL in case of failure.
|
pure virtual |
Transforms (multiple) distribution functions and expressions of a material to target code.
For each distribution function this results in four functions, suffixed with "_init", "_sample", "_evaluate", and "_pdf". Functions can be selected by providing a list of Target_function_descriptions. Each of them needs to define the path, the root of the expression that should be translated. After calling this function, each element of the list will contain information for later usage in the application, e.g., the argument_block_index and the function_index.
| transaction | The transaction to be used. | |
| material | The compiled MDL material. | |
| function_descriptions | The list of descriptions of function to translate. | |
| description_count | The size of the list of descriptions. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported for this operation:
NULL. |
NULL in case of failure. In the latter case, the return code in the failing description is set to -1 and the context, if provided, contains an error message.
|
pure virtual |
Transforms an MDL distribution function to target code.
For a BSDF it results in four functions, suffixed with "_init", "_sample", "_evaluate" and "_pdf".
| transaction | The transaction to be used. | |
| material | The compiled MDL material. | |
| path | The path from the material root to the expression that should be translated, e.g., "surface.scattering". | |
| base_fname | The base name of the generated functions. If NULL is passed, "lambda" will be used. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. The following options are supported by this operation:
NULL. Possible error conditions:
|
NULL in case of failure.
|
pure virtual |
Transforms an expression that is part of an MDL material instance to target code.
The prototype of the resulting function will roughly look like this:
The result buffer must be big enough for the expression result.
| transaction | The transaction to be used. | |
| material | The compiled MDL material. | |
| path | The path from the material root to the expression that should be translated, e.g., "geometry.displacement". | |
| fname | The name of the generated function. If NULL is passed, "lambda" will be used. | |
| [in,out] | context | An execution context which can be used to pass compilation options to the MDL compiler. Currently, no options are supported by this operation. During material translation, messages like errors and warnings will be passed to the context for later evaluation by the caller. Can be NULL. Possible error conditions:
|
NULL in case of failure. | Size mi::neuraylib::Target_function_description::argument_block_index |
The index of argument block that belongs to the compiled material the function is generated from or ~0 if none of the added function required arguments.
It allows to get the layout and a writable pointer to argument data. This is an output parameter which is available after adding the function to the link unit.
| const char* mi::neuraylib::Target_function_description::base_fname |
The base name of the generated functions.
If NULL is passed, the function name will be 'lambda' followed by an increasing counter. Note, that this counter is tracked per link unit. That means, you need to provide functions names when using multiple link units in order to avoid collisions.
| ITarget_code::Distribution_kind mi::neuraylib::Target_function_description::distribution_kind |
Return the distribution kind of this function (or NONE in case expressions).
This is an output parameter which is available after adding the function to the link unit.
| Size mi::neuraylib::Target_function_description::function_index |
The index of the generated function for accessing the callable function information of the link unit or ~0 if the selected function is an invalid distribution function.
~0 is not an error case, it just means, that evaluating the function will result in 0. In case the function is a distribution function, the returned index will be the index of the init function, while sample, evaluate, and pdf will be accessible by the consecutive indices, i.e., function_index + 1, function_index + 2, function_index + 3. This is an output parameter which is available after adding the function to the link unit.
| mi::Uint32 mi::neuraylib::Target_value_layout_state::m_data_offs |
The offset which needs to be added to the element data offset.
| mi::Uint32 mi::neuraylib::Target_value_layout_state::m_state_offs |
The offset inside the layout state structure.
| const char* mi::neuraylib::Target_function_description::path |
The path from the material root to the expression that should be translated, e.g., "surface.scattering".
| Sint32 mi::neuraylib::Target_function_description::return_code |
A return code.
The error codes correspond to the codes returned by mi::neuraylib::ILink_unit::add_material_expression() (multiplied by 10) and mi::neuraylib::ILink_unit::add_material_df (multiplied by 100).
NULL pointer).Codes for expressions, i.e., distribution_kind == DK_NONE
Codes for distribution functions, i.e., distribution_kind == DK_BSDF, DK_EDF, ...
NULL pointer).