forked from bartvdbraak/blender
154 lines
4.1 KiB
C++
154 lines
4.1 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __SVM_H__
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#define __SVM_H__
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#include "attribute.h"
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#include "graph.h"
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#include "shader.h"
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#include "util_set.h"
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#include "util_string.h"
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CCL_NAMESPACE_BEGIN
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class Device;
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class DeviceScene;
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class ImageManager;
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struct KernelSunSky;
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class Scene;
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class ShaderGraph;
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class ShaderInput;
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class ShaderNode;
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class ShaderOutput;
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/* Shader Manager */
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class SVMShaderManager : public ShaderManager {
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public:
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SVMShaderManager();
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~SVMShaderManager();
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void reset(Scene *scene);
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void device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
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void device_free(Device *device, DeviceScene *dscene);
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};
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/* Graph Compiler */
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class SVMCompiler {
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public:
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SVMCompiler(ShaderManager *shader_manager, ImageManager *image_manager,
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bool use_multi_closure_);
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void compile(Shader *shader, vector<int4>& svm_nodes, int index);
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void stack_assign(ShaderOutput *output);
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void stack_assign(ShaderInput *input);
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int stack_find_offset(ShaderSocketType type);
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void stack_clear_offset(ShaderSocketType type, int offset);
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void stack_link(ShaderInput *input, ShaderOutput *output);
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void add_node(NodeType type, int a = 0, int b = 0, int c = 0);
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void add_node(int a = 0, int b = 0, int c = 0, int d = 0);
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void add_node(NodeType type, const float3& f);
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void add_node(const float4& f);
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void add_array(float4 *f, int num);
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uint attribute(ustring name);
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uint attribute(AttributeStandard std);
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uint encode_uchar4(uint x, uint y = 0, uint z = 0, uint w = 0);
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uint closure_mix_weight_offset() { return mix_weight_offset; }
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ShaderType output_type() { return current_type; }
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ImageManager *image_manager;
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ShaderManager *shader_manager;
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KernelSunSky *sunsky;
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bool background;
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protected:
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/* stack */
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struct Stack {
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Stack() { memset(users, 0, sizeof(users)); }
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Stack(const Stack& other) { memcpy(users, other.users, sizeof(users)); }
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Stack& operator=(const Stack& other) { memcpy(users, other.users, sizeof(users)); return *this; }
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bool empty()
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{
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for(int i = 0; i < SVM_STACK_SIZE; i++)
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if(users[i])
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return false;
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return true;
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}
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void print()
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{
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printf("stack <");
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for(int i = 0; i < SVM_STACK_SIZE; i++)
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printf((users[i])? "*": " ");
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printf(">\n");
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}
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int users[SVM_STACK_SIZE];
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};
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struct StackBackup {
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Stack stack;
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vector<int> offsets;
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set<ShaderNode*> done;
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};
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void stack_backup(StackBackup& backup, set<ShaderNode*>& done);
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void stack_restore(StackBackup& backup, set<ShaderNode*>& done);
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void stack_clear_temporary(ShaderNode *node);
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int stack_size(ShaderSocketType type);
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void stack_clear_users(ShaderNode *node, set<ShaderNode*>& done);
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bool node_skip_input(ShaderNode *node, ShaderInput *input);
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/* single closure */
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void find_dependencies(set<ShaderNode*>& dependencies, const set<ShaderNode*>& done, ShaderInput *input);
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void generate_svm_nodes(const set<ShaderNode*>& nodes, set<ShaderNode*>& done);
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void generate_closure(ShaderNode *node, set<ShaderNode*>& done);
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/* multi closure */
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void generate_multi_closure(ShaderNode *node, set<ShaderNode*>& done, set<ShaderNode*>& closure_done);
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/* compile */
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void compile_type(Shader *shader, ShaderGraph *graph, ShaderType type);
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vector<int4> svm_nodes;
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ShaderType current_type;
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Shader *current_shader;
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ShaderGraph *current_graph;
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Stack active_stack;
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int max_stack_use;
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uint mix_weight_offset;
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bool use_multi_closure;
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};
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CCL_NAMESPACE_END
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#endif /* __SVM_H__ */
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