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Diffstat (limited to 'intern/cycles/render/graph.h')
| -rw-r--r-- | intern/cycles/render/graph.h | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/intern/cycles/render/graph.h b/intern/cycles/render/graph.h deleted file mode 100644 index 3584754fad1..00000000000 --- a/intern/cycles/render/graph.h +++ /dev/null @@ -1,385 +0,0 @@ -/* - * Copyright 2011-2016 Blender Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __GRAPH_H__ -#define __GRAPH_H__ - -#include "graph/node.h" -#include "graph/node_type.h" - -#include "kernel/kernel_types.h" - -#include "util/util_list.h" -#include "util/util_map.h" -#include "util/util_param.h" -#include "util/util_set.h" -#include "util/util_types.h" -#include "util/util_vector.h" - -CCL_NAMESPACE_BEGIN - -class AttributeRequestSet; -class Scene; -class Shader; -class ShaderInput; -class ShaderOutput; -class ShaderNode; -class ShaderGraph; -class SVMCompiler; -class OSLCompiler; -class OutputNode; -class ConstantFolder; -class MD5Hash; - -/* Bump - * - * For bump mapping, a node may be evaluated multiple times, using different - * samples to reconstruct the normal, this indicates the sample position */ - -enum ShaderBump { SHADER_BUMP_NONE, SHADER_BUMP_CENTER, SHADER_BUMP_DX, SHADER_BUMP_DY }; - -/* Identifiers for some special node types. - * - * The graph needs to identify these in the clean function. - * Cannot use dynamic_cast, as this is disabled for OSL. */ - -enum ShaderNodeSpecialType { - SHADER_SPECIAL_TYPE_NONE, - SHADER_SPECIAL_TYPE_PROXY, - SHADER_SPECIAL_TYPE_AUTOCONVERT, - SHADER_SPECIAL_TYPE_GEOMETRY, - SHADER_SPECIAL_TYPE_OSL, - SHADER_SPECIAL_TYPE_IMAGE_SLOT, - SHADER_SPECIAL_TYPE_CLOSURE, - SHADER_SPECIAL_TYPE_COMBINE_CLOSURE, - SHADER_SPECIAL_TYPE_OUTPUT, - SHADER_SPECIAL_TYPE_BUMP, - SHADER_SPECIAL_TYPE_OUTPUT_AOV, -}; - -/* Input - * - * Input socket for a shader node. May be linked to an output or not. If not - * linked, it will either get a fixed default value, or e.g. a texture - * coordinate. */ - -class ShaderInput { - public: - ShaderInput(const SocketType &socket_type_, ShaderNode *parent_) - : socket_type(socket_type_), - parent(parent_), - link(NULL), - stack_offset(SVM_STACK_INVALID), - constant_folded_in(false) - { - } - - ustring name() - { - return socket_type.ui_name; - } - int flags() - { - return socket_type.flags; - } - SocketType::Type type() - { - return socket_type.type; - } - - void set(float f) - { - ((Node *)parent)->set(socket_type, f); - } - void set(float3 f) - { - ((Node *)parent)->set(socket_type, f); - } - - void disconnect(); - - const SocketType &socket_type; - ShaderNode *parent; - ShaderOutput *link; - int stack_offset; /* for SVM compiler */ - - /* Keeps track of whether a constant was folded in this socket, to avoid over-optimizing when the - * link is null. */ - bool constant_folded_in; -}; - -/* Output - * - * Output socket for a shader node. */ - -class ShaderOutput { - public: - ShaderOutput(const SocketType &socket_type_, ShaderNode *parent_) - : socket_type(socket_type_), parent(parent_), stack_offset(SVM_STACK_INVALID) - { - } - - ustring name() - { - return socket_type.ui_name; - } - SocketType::Type type() - { - return socket_type.type; - } - - void disconnect(); - - const SocketType &socket_type; - ShaderNode *parent; - vector<ShaderInput *> links; - int stack_offset; /* for SVM compiler */ -}; - -/* Node - * - * Shader node in graph, with input and output sockets. This is the virtual - * base class for all node types. */ - -class ShaderNode : public Node { - public: - explicit ShaderNode(const NodeType *type); - virtual ~ShaderNode(); - - void create_inputs_outputs(const NodeType *type); - void remove_input(ShaderInput *input); - - ShaderInput *input(const char *name); - ShaderOutput *output(const char *name); - ShaderInput *input(ustring name); - ShaderOutput *output(ustring name); - - virtual ShaderNode *clone(ShaderGraph *graph) const = 0; - virtual void attributes(Shader *shader, AttributeRequestSet *attributes); - virtual void compile(SVMCompiler &compiler) = 0; - virtual void compile(OSLCompiler &compiler) = 0; - - /* Expand node into additional nodes. */ - virtual void expand(ShaderGraph * /* graph */) - { - } - - /* ** Node optimization ** */ - /* Check whether the node can be replaced with single constant. */ - virtual void constant_fold(const ConstantFolder & /*folder*/) - { - } - - /* Simplify settings used by artists to the ones which are simpler to - * evaluate in the kernel but keep the final result unchanged. - */ - virtual void simplify_settings(Scene * /*scene*/){}; - - virtual bool has_surface_emission() - { - return false; - } - virtual bool has_surface_transparent() - { - return false; - } - virtual bool has_surface_bssrdf() - { - return false; - } - virtual bool has_bump() - { - return false; - } - virtual bool has_bssrdf_bump() - { - return false; - } - virtual bool has_spatial_varying() - { - return false; - } - virtual bool has_attribute_dependency() - { - return false; - } - virtual bool has_integrator_dependency() - { - return false; - } - virtual bool has_volume_support() - { - return false; - } - vector<ShaderInput *> inputs; - vector<ShaderOutput *> outputs; - - int id; /* index in graph node array */ - ShaderBump bump; /* for bump mapping utility */ - - ShaderNodeSpecialType special_type; /* special node type */ - - /* ** Selective nodes compilation ** */ - - /* TODO(sergey): More explicitly mention in the function names - * that those functions are for selective compilation only? - */ - - /* Node feature are used to disable huge nodes inside the group, - * so it's possible to disable huge nodes inside of the required - * nodes group. - */ - virtual int get_feature() - { - return bump == SHADER_BUMP_NONE ? 0 : KERNEL_FEATURE_NODE_BUMP; - } - - /* Get closure ID to which the node compiles into. */ - virtual ClosureType get_closure_type() - { - return CLOSURE_NONE_ID; - } - - /* Check whether settings of the node equals to another one. - * - * This is mainly used to check whether two nodes can be merged - * together. Meaning, runtime stuff like node id and unbound slots - * will be ignored for comparison. - * - * NOTE: If some node can't be de-duplicated for whatever reason it - * is to be handled in the subclass. - */ - virtual bool equals(const ShaderNode &other); -}; - -/* Node definition utility macros */ - -#define SHADER_NODE_CLASS(type) \ - NODE_DECLARE \ - type(); \ - virtual ShaderNode *clone(ShaderGraph *graph) const \ - { \ - return graph->create_node<type>(*this); \ - } \ - virtual void compile(SVMCompiler &compiler); \ - virtual void compile(OSLCompiler &compiler); - -#define SHADER_NODE_NO_CLONE_CLASS(type) \ - NODE_DECLARE \ - type(); \ - virtual void compile(SVMCompiler &compiler); \ - virtual void compile(OSLCompiler &compiler); - -#define SHADER_NODE_BASE_CLASS(type) \ - virtual ShaderNode *clone(ShaderGraph *graph) const \ - { \ - return graph->create_node<type>(*this); \ - } \ - virtual void compile(SVMCompiler &compiler); \ - virtual void compile(OSLCompiler &compiler); - -class ShaderNodeIDComparator { - public: - bool operator()(const ShaderNode *n1, const ShaderNode *n2) const - { - return n1->id < n2->id; - } -}; - -typedef set<ShaderNode *, ShaderNodeIDComparator> ShaderNodeSet; -typedef map<ShaderNode *, ShaderNode *, ShaderNodeIDComparator> ShaderNodeMap; - -/* Graph - * - * Shader graph of nodes. Also does graph manipulations for default inputs, - * bump mapping from displacement, and possibly other things in the future. */ - -class ShaderGraph : public NodeOwner { - public: - list<ShaderNode *> nodes; - size_t num_node_ids; - bool finalized; - bool simplified; - string displacement_hash; - - ShaderGraph(); - ~ShaderGraph(); - - ShaderNode *add(ShaderNode *node); - OutputNode *output(); - - void connect(ShaderOutput *from, ShaderInput *to); - void disconnect(ShaderOutput *from); - void disconnect(ShaderInput *to); - void relink(ShaderInput *from, ShaderInput *to); - void relink(ShaderOutput *from, ShaderOutput *to); - void relink(ShaderNode *node, ShaderOutput *from, ShaderOutput *to); - - void remove_proxy_nodes(); - void compute_displacement_hash(); - void simplify(Scene *scene); - void finalize(Scene *scene, - bool do_bump = false, - bool do_simplify = false, - bool bump_in_object_space = false); - - int get_num_closures(); - - void dump_graph(const char *filename); - - /* This function is used to create a node of a specified type instead of - * calling 'new', and sets the graph as the owner of the node. - */ - template<typename T, typename... Args> T *create_node(Args &&...args) - { - T *node = new T(args...); - node->set_owner(this); - return node; - } - - /* This function is used to delete a node created and owned by the graph. - */ - template<typename T> void delete_node(T *node) - { - assert(node->get_owner() == this); - delete node; - } - - protected: - typedef pair<ShaderNode *const, ShaderNode *> NodePair; - - void find_dependencies(ShaderNodeSet &dependencies, ShaderInput *input); - void clear_nodes(); - void copy_nodes(ShaderNodeSet &nodes, ShaderNodeMap &nnodemap); - - void break_cycles(ShaderNode *node, vector<bool> &visited, vector<bool> &on_stack); - void bump_from_displacement(bool use_object_space); - void refine_bump_nodes(); - void expand(); - void default_inputs(bool do_osl); - void transform_multi_closure(ShaderNode *node, ShaderOutput *weight_out, bool volume); - - /* Graph simplification routines. */ - void clean(Scene *scene); - void constant_fold(Scene *scene); - void simplify_settings(Scene *scene); - void deduplicate_nodes(); - void verify_volume_output(); -}; - -CCL_NAMESPACE_END - -#endif /* __GRAPH_H__ */ |