From 5aaa643947929cf807c349b2b5fe33d4dc669c3d Mon Sep 17 00:00:00 2001 From: Lukas Stockner Date: Wed, 14 Dec 2016 23:47:39 +0100 Subject: Cycles: Optimize shaders earlier to skip unneccessary attributes for noninteractive rendering Before, Cycles would first sync the shader exactly as shown in the UI, then determine and sync the used attributes and later optimize the shader. Therefore, even completely unconnected nodes would cause unneccessary attributes to be synced. The reason for this is to avoid frequent resyncs when editing shaders interactively, but it can still be avoided for noninteractive renders - which is what this commit does. Reviewed by: sergey Differential Revision: https://developer.blender.org/D2285 --- intern/cycles/blender/blender_shader.cpp | 16 ++++++++++++++++ intern/cycles/render/graph.cpp | 25 +++++++++++++++++++++---- intern/cycles/render/graph.h | 3 ++- intern/cycles/render/osl.cpp | 2 -- intern/cycles/render/svm.cpp | 2 -- 5 files changed, 39 insertions(+), 9 deletions(-) diff --git a/intern/cycles/blender/blender_shader.cpp b/intern/cycles/blender/blender_shader.cpp index 8baa53fc2ec..f35565d8330 100644 --- a/intern/cycles/blender/blender_shader.cpp +++ b/intern/cycles/blender/blender_shader.cpp @@ -28,6 +28,7 @@ #include "util_debug.h" #include "util_string.h" +#include "util_task.h" CCL_NAMESPACE_BEGIN @@ -1164,6 +1165,8 @@ void BlenderSync::sync_materials(bool update_all) /* material loop */ BL::BlendData::materials_iterator b_mat; + TaskPool pool; + for(b_data.materials.begin(b_mat); b_mat != b_data.materials.end(); ++b_mat) { Shader *shader; @@ -1199,9 +1202,22 @@ void BlenderSync::sync_materials(bool update_all) shader->displacement_method = (experimental) ? get_displacement_method(cmat) : DISPLACE_BUMP; shader->set_graph(graph); + + /* By simplifying the shader graph as soon as possible, some redundant shader nodes + * might be removed which prevents loading unneccessary attributes later. + * + * However, since graph simplification also accounts for e.g. mix weight, this would + * cause frequent expensive resyncs in interactive sessions, so for those sessions + * optimization is only performed right before compiling. */ + if(!preview) { + pool.push(function_bind(&ShaderGraph::simplify, shader->graph, scene)); + } + shader->tag_update(scene); } } + + pool.wait_work(); } /* Sync World */ diff --git a/intern/cycles/render/graph.cpp b/intern/cycles/render/graph.cpp index f6c83fb5c7e..0cfd08090c2 100644 --- a/intern/cycles/render/graph.cpp +++ b/intern/cycles/render/graph.cpp @@ -17,6 +17,7 @@ #include "attribute.h" #include "graph.h" #include "nodes.h" +#include "scene.h" #include "shader.h" #include "constant_fold.h" @@ -195,6 +196,7 @@ bool ShaderNode::equals(const ShaderNode& other) ShaderGraph::ShaderGraph() { finalized = false; + simplified = false; num_node_ids = 0; add(new OutputNode()); } @@ -207,6 +209,8 @@ ShaderGraph::~ShaderGraph() ShaderNode *ShaderGraph::add(ShaderNode *node) { assert(!finalized); + simplified = false; + node->id = num_node_ids++; nodes.push_back(node); return node; @@ -241,6 +245,7 @@ void ShaderGraph::connect(ShaderOutput *from, ShaderInput *to) { assert(!finalized); assert(from && to); + simplified = false; if(to->link) { fprintf(stderr, "Cycles shader graph connect: input already connected.\n"); @@ -273,6 +278,7 @@ void ShaderGraph::connect(ShaderOutput *from, ShaderInput *to) void ShaderGraph::disconnect(ShaderOutput *from) { assert(!finalized); + simplified = false; foreach(ShaderInput *sock, from->links) { sock->link = NULL; @@ -285,6 +291,7 @@ void ShaderGraph::disconnect(ShaderInput *to) { assert(!finalized); assert(to->link); + simplified = false; ShaderOutput *from = to->link; @@ -294,6 +301,8 @@ void ShaderGraph::disconnect(ShaderInput *to) void ShaderGraph::relink(ShaderNode *node, ShaderOutput *from, ShaderOutput *to) { + simplified = false; + /* Copy because disconnect modifies this list */ vector outputs = from->links; @@ -310,9 +319,19 @@ void ShaderGraph::relink(ShaderNode *node, ShaderOutput *from, ShaderOutput *to) } } +void ShaderGraph::simplify(Scene *scene) +{ + if(!simplified) { + default_inputs(scene->shader_manager->use_osl()); + clean(scene); + refine_bump_nodes(); + + simplified = true; + } +} + void ShaderGraph::finalize(Scene *scene, bool do_bump, - bool do_osl, bool do_simplify, bool bump_in_object_space) { @@ -322,9 +341,7 @@ void ShaderGraph::finalize(Scene *scene, * modified afterwards. */ if(!finalized) { - default_inputs(do_osl); - clean(scene); - refine_bump_nodes(); + simplify(scene); if(do_bump) bump_from_displacement(bump_in_object_space); diff --git a/intern/cycles/render/graph.h b/intern/cycles/render/graph.h index 06524d3fa13..d22193d4e51 100644 --- a/intern/cycles/render/graph.h +++ b/intern/cycles/render/graph.h @@ -240,6 +240,7 @@ public: list nodes; size_t num_node_ids; bool finalized; + bool simplified; ShaderGraph(); ~ShaderGraph(); @@ -255,9 +256,9 @@ public: void relink(ShaderNode *node, ShaderOutput *from, ShaderOutput *to); void remove_proxy_nodes(); + void simplify(Scene *scene); void finalize(Scene *scene, bool do_bump = false, - bool do_osl = false, bool do_simplify = false, bool bump_in_object_space = false); diff --git a/intern/cycles/render/osl.cpp b/intern/cycles/render/osl.cpp index 67b68e63cb2..68bd8d96bf9 100644 --- a/intern/cycles/render/osl.cpp +++ b/intern/cycles/render/osl.cpp @@ -1096,11 +1096,9 @@ void OSLCompiler::compile(Scene *scene, OSLGlobals *og, Shader *shader) /* finalize */ shader->graph->finalize(scene, false, - true, shader->has_integrator_dependency); if(shader->graph_bump) { shader->graph_bump->finalize(scene, - true, true, shader->has_integrator_dependency, shader->displacement_method == DISPLACE_BOTH); diff --git a/intern/cycles/render/svm.cpp b/intern/cycles/render/svm.cpp index 955b892f4c3..bbf14c24b56 100644 --- a/intern/cycles/render/svm.cpp +++ b/intern/cycles/render/svm.cpp @@ -812,7 +812,6 @@ void SVMCompiler::compile(Scene *scene, { scoped_timer timer((summary != NULL)? &summary->time_finalize: NULL); shader->graph->finalize(scene, - false, false, shader->has_integrator_dependency); } @@ -821,7 +820,6 @@ void SVMCompiler::compile(Scene *scene, scoped_timer timer((summary != NULL)? &summary->time_finalize_bump: NULL); shader->graph_bump->finalize(scene, true, - false, shader->has_integrator_dependency, shader->displacement_method == DISPLACE_BOTH); } -- cgit v1.2.3