e46551246c
Problem was that due to group proxy node the anisotropic node did not detect early enough that it needs generated texture coordinate data to generate the tangent. Now the proxy nodes are removed earlier.
359 lines
9.0 KiB
C++
359 lines
9.0 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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#include "bssrdf.h"
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#include "device.h"
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#include "graph.h"
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#include "light.h"
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#include "mesh.h"
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#include "nodes.h"
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#include "osl.h"
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#include "scene.h"
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#include "shader.h"
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#include "svm.h"
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#include "tables.h"
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#include "util_foreach.h"
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CCL_NAMESPACE_BEGIN
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/* Shader */
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Shader::Shader()
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{
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name = "";
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pass_id = 0;
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graph = NULL;
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graph_bump = NULL;
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sample_as_light = true;
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homogeneous_volume = false;
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has_surface = false;
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has_surface_transparent = false;
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has_surface_emission = false;
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has_surface_bssrdf = false;
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has_volume = false;
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has_displacement = false;
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used = false;
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need_update = true;
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need_update_attributes = true;
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}
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Shader::~Shader()
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{
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delete graph;
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delete graph_bump;
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}
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void Shader::set_graph(ShaderGraph *graph_)
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{
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/* do this here already so that we can detect if mesh or object attributes
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* are needed, since the node attribute callbacks check if their sockets
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* are connected but proxy nodes should not count */
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if(graph_)
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graph_->remove_unneeded_nodes();
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/* assign graph */
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delete graph;
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delete graph_bump;
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graph = graph_;
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graph_bump = NULL;
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}
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void Shader::tag_update(Scene *scene)
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{
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/* update tag */
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need_update = true;
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scene->shader_manager->need_update = true;
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/* if the shader previously was emissive, update light distribution,
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* if the new shader is emissive, a light manager update tag will be
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* done in the shader manager device update. */
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if(sample_as_light && has_surface_emission)
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scene->light_manager->need_update = true;
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/* get requested attributes. this could be optimized by pruning unused
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* nodes here already, but that's the job of the shader manager currently,
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* and may not be so great for interactive rendering where you temporarily
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* disconnect a node */
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AttributeRequestSet prev_attributes = attributes;
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attributes.clear();
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foreach(ShaderNode *node, graph->nodes)
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node->attributes(&attributes);
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/* compare if the attributes changed, mesh manager will check
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* need_update_attributes, update the relevant meshes and clear it. */
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if(attributes.modified(prev_attributes)) {
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need_update_attributes = true;
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scene->mesh_manager->need_update = true;
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}
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}
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void Shader::tag_used(Scene *scene)
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{
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/* if an unused shader suddenly gets used somewhere, it needs to be
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* recompiled because it was skipped for compilation before */
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if(!used) {
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need_update = true;
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scene->shader_manager->need_update = true;
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}
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}
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/* Shader Manager */
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ShaderManager::ShaderManager()
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{
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need_update = true;
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bssrdf_table_offset = TABLE_OFFSET_INVALID;
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}
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ShaderManager::~ShaderManager()
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{
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}
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ShaderManager *ShaderManager::create(Scene *scene, int shadingsystem)
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{
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ShaderManager *manager;
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#ifdef WITH_OSL
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if(shadingsystem == SceneParams::OSL)
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manager = new OSLShaderManager();
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else
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#endif
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manager = new SVMShaderManager();
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add_default(scene);
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return manager;
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}
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uint ShaderManager::get_attribute_id(ustring name)
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{
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/* get a unique id for each name, for SVM attribute lookup */
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AttributeIDMap::iterator it = unique_attribute_id.find(name);
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if(it != unique_attribute_id.end())
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return it->second;
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uint id = (uint)ATTR_STD_NUM + unique_attribute_id.size();
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unique_attribute_id[name] = id;
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return id;
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}
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uint ShaderManager::get_attribute_id(AttributeStandard std)
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{
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return (uint)std;
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}
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int ShaderManager::get_shader_id(uint shader, Mesh *mesh, bool smooth)
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{
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/* get a shader id to pass to the kernel */
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int id = shader*2;
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/* index depends bump since this setting is not in the shader */
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if(mesh && mesh->displacement_method != Mesh::DISPLACE_TRUE)
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id += 1;
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/* smooth flag */
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if(smooth)
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id |= SHADER_SMOOTH_NORMAL;
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/* default flags */
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id |= SHADER_CAST_SHADOW|SHADER_AREA_LIGHT;
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return id;
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}
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void ShaderManager::device_update_shaders_used(Scene *scene)
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{
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/* figure out which shaders are in use, so SVM/OSL can skip compiling them
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* for speed and avoid loading image textures into memory */
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foreach(Shader *shader, scene->shaders)
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shader->used = false;
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scene->shaders[scene->default_surface]->used = true;
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scene->shaders[scene->default_light]->used = true;
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scene->shaders[scene->default_background]->used = true;
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scene->shaders[scene->default_holdout]->used = true;
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scene->shaders[scene->default_empty]->used = true;
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foreach(Mesh *mesh, scene->meshes)
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foreach(uint shader, mesh->used_shaders)
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scene->shaders[shader]->used = true;
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foreach(Light *light, scene->lights)
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scene->shaders[light->shader]->used = true;
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}
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void ShaderManager::device_update_common(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
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{
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device->tex_free(dscene->shader_flag);
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dscene->shader_flag.clear();
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if(scene->shaders.size() == 0)
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return;
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uint shader_flag_size = scene->shaders.size()*4;
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uint *shader_flag = dscene->shader_flag.resize(shader_flag_size);
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uint i = 0;
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bool has_surface_bssrdf = false;
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foreach(Shader *shader, scene->shaders) {
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uint flag = 0;
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if(shader->sample_as_light)
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flag |= SD_SAMPLE_AS_LIGHT;
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if(shader->has_surface_transparent)
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flag |= SD_HAS_SURFACE_TRANSPARENT;
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if(shader->has_volume)
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flag |= SD_HAS_VOLUME;
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if(shader->homogeneous_volume)
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flag |= SD_HOMOGENEOUS_VOLUME;
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if(shader->has_surface_bssrdf)
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has_surface_bssrdf = true;
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shader_flag[i++] = flag;
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shader_flag[i++] = shader->pass_id;
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shader_flag[i++] = flag;
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shader_flag[i++] = shader->pass_id;
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}
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device->tex_alloc("__shader_flag", dscene->shader_flag);
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/* bssrdf lookup table */
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KernelBSSRDF *kbssrdf = &dscene->data.bssrdf;
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if(has_surface_bssrdf && bssrdf_table_offset == TABLE_OFFSET_INVALID) {
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vector<float> table;
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bssrdf_table_build(table);
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bssrdf_table_offset = scene->lookup_tables->add_table(dscene, table);
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kbssrdf->table_offset = (int)bssrdf_table_offset;
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kbssrdf->num_attempts = BSSRDF_MAX_ATTEMPTS;
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}
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else if(!has_surface_bssrdf && bssrdf_table_offset != TABLE_OFFSET_INVALID) {
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scene->lookup_tables->remove_table(bssrdf_table_offset);
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bssrdf_table_offset = TABLE_OFFSET_INVALID;
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}
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}
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void ShaderManager::device_free_common(Device *device, DeviceScene *dscene, Scene *scene)
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{
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if(bssrdf_table_offset != TABLE_OFFSET_INVALID) {
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scene->lookup_tables->remove_table(bssrdf_table_offset);
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bssrdf_table_offset = TABLE_OFFSET_INVALID;
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}
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device->tex_free(dscene->shader_flag);
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dscene->shader_flag.clear();
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}
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void ShaderManager::add_default(Scene *scene)
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{
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Shader *shader;
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ShaderGraph *graph;
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ShaderNode *closure, *out;
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/* default surface */
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{
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graph = new ShaderGraph();
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closure = graph->add(new DiffuseBsdfNode());
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closure->input("Color")->value = make_float3(0.8f, 0.8f, 0.8f);
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out = graph->output();
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graph->connect(closure->output("BSDF"), out->input("Surface"));
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shader = new Shader();
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shader->name = "default_surface";
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shader->graph = graph;
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scene->shaders.push_back(shader);
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scene->default_surface = scene->shaders.size() - 1;
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}
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/* default light */
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{
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graph = new ShaderGraph();
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closure = graph->add(new EmissionNode());
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closure->input("Color")->value = make_float3(0.8f, 0.8f, 0.8f);
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closure->input("Strength")->value.x = 0.0f;
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out = graph->output();
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graph->connect(closure->output("Emission"), out->input("Surface"));
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shader = new Shader();
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shader->name = "default_light";
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shader->graph = graph;
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scene->shaders.push_back(shader);
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scene->default_light = scene->shaders.size() - 1;
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}
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/* default background */
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{
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graph = new ShaderGraph();
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closure = graph->add(new BackgroundNode());
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closure->input("Color")->value = make_float3(0.8f, 0.8f, 0.8f);
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out = graph->output();
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graph->connect(closure->output("Background"), out->input("Surface"));
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shader = new Shader();
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shader->name = "default_background";
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shader->graph = graph;
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scene->shaders.push_back(shader);
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scene->default_background = scene->shaders.size() - 1;
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}
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/* default holdout */
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{
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graph = new ShaderGraph();
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closure = graph->add(new HoldoutNode());
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out = graph->output();
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graph->connect(closure->output("Holdout"), out->input("Surface"));
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shader = new Shader();
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shader->name = "default_holdout";
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shader->graph = graph;
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scene->shaders.push_back(shader);
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scene->default_holdout = scene->shaders.size() - 1;
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}
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/* default empty */
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{
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graph = new ShaderGraph();
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shader = new Shader();
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shader->name = "default_empty";
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shader->graph = graph;
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scene->shaders.push_back(shader);
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scene->default_empty = scene->shaders.size() - 1;
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}
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}
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CCL_NAMESPACE_END
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