Ykkrosh
555deea136
CShaderDefines is designed to be efficient to copy and compare, but not to construct. Conditional defines were constructing new CShaderDefines for many models every frame. Precompute all the possible conditional combinations of CShaderDefines when a material is first loaded, so they can be looked up at no cost when rendering. This was SVN commit r13902.
190 lines
4.7 KiB
C++
190 lines
4.7 KiB
C++
/* Copyright (C) 2012 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "MaterialManager.h"
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#include "lib/ogl.h"
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#include "maths/MathUtil.h"
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#include "maths/Vector4D.h"
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#include "ps/ConfigDB.h"
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#include "ps/Filesystem.h"
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#include "ps/PreprocessorWrapper.h"
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#include "ps/XML/Xeromyces.h"
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#include "renderer/Renderer.h"
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#include <sstream>
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CMaterialManager::CMaterialManager()
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{
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qualityLevel = 5.0;
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CFG_GET_VAL("materialmgr.quality", Float, qualityLevel);
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qualityLevel = clamp(qualityLevel, 0.0f, 10.0f);
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}
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CMaterial CMaterialManager::LoadMaterial(const VfsPath& pathname)
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{
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if (pathname.empty())
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return CMaterial();
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std::map<VfsPath, CMaterial>::iterator iter = m_Materials.find(pathname);
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if (iter != m_Materials.end())
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return iter->second;
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CXeromyces xeroFile;
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if (xeroFile.Load(g_VFS, pathname) != PSRETURN_OK)
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return CMaterial();
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#define EL(x) int el_##x = xeroFile.GetElementID(#x)
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#define AT(x) int at_##x = xeroFile.GetAttributeID(#x)
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EL(alpha_blending);
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EL(alternative);
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EL(define);
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EL(shader);
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EL(uniform);
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EL(renderquery);
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EL(conditional_define);
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AT(effect);
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AT(if);
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AT(quality);
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AT(material);
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AT(name);
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AT(value);
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AT(type);
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AT(min);
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AT(max);
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AT(conf);
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#undef AT
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#undef EL
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CMaterial material;
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XMBElement root = xeroFile.GetRoot();
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CPreprocessorWrapper preprocessor;
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preprocessor.AddDefine("CFG_FORCE_ALPHATEST", g_Renderer.m_Options.m_ForceAlphaTest ? "1" : "0");
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CVector4D vec(qualityLevel,0,0,0);
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material.AddStaticUniform("qualityLevel", vec);
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XERO_ITER_EL(root, node)
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{
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int token = node.GetNodeName();
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XMBAttributeList attrs = node.GetAttributes();
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if (token == el_alternative)
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{
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CStr cond = attrs.GetNamedItem(at_if);
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if (cond.empty() || !preprocessor.TestConditional(cond))
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{
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cond = attrs.GetNamedItem(at_quality);
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if (cond.empty())
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continue;
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else
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{
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if (cond.ToFloat() <= qualityLevel)
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continue;
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}
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}
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material = LoadMaterial(VfsPath("art/materials") / attrs.GetNamedItem(at_material).FromUTF8());
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break;
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}
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else if (token == el_alpha_blending)
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{
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material.SetUsesAlphaBlending(true);
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}
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else if (token == el_shader)
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{
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material.SetShaderEffect(attrs.GetNamedItem(at_effect));
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}
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else if (token == el_define)
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{
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material.AddShaderDefine(attrs.GetNamedItem(at_name).c_str(), attrs.GetNamedItem(at_value).c_str());
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}
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else if (token == el_conditional_define)
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{
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std::vector<float> args;
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CStr type = attrs.GetNamedItem(at_type).c_str();
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int typeID = -1;
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if (type == CStr("draw_range"))
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{
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typeID = DCOND_DISTANCE;
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float valmin = -1.0f;
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float valmax = -1.0f;
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CStr conf = attrs.GetNamedItem(at_conf);
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if (!conf.empty())
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{
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CFG_GET_VAL("materialmgr." + conf + ".min", Float, valmin);
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CFG_GET_VAL("materialmgr." + conf + ".max", Float, valmax);
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}
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else
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{
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CStr dmin = attrs.GetNamedItem(at_min);
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if (!dmin.empty())
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valmin = attrs.GetNamedItem(at_min).ToFloat();
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CStr dmax = attrs.GetNamedItem(at_max);
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if (!dmax.empty())
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valmax = attrs.GetNamedItem(at_max).ToFloat();
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}
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args.push_back(valmin);
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args.push_back(valmax);
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if (valmin >= 0.0f)
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{
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std::stringstream sstr;
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sstr << valmin;
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material.AddShaderDefine((conf + "_MIN").c_str(), sstr.str().c_str());
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}
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if (valmax >= 0.0f)
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{
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std::stringstream sstr;
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sstr << valmax;
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material.AddShaderDefine((conf + "_MAX").c_str(), sstr.str().c_str());
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}
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}
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material.AddConditionalDefine(attrs.GetNamedItem(at_name).c_str(),
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attrs.GetNamedItem(at_value).c_str(),
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typeID, args);
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}
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else if (token == el_uniform)
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{
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std::stringstream str(attrs.GetNamedItem(at_value));
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CVector4D vec;
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str >> vec.X >> vec.Y >> vec.Z >> vec.W;
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material.AddStaticUniform(attrs.GetNamedItem(at_name).c_str(), vec);
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}
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else if (token == el_renderquery)
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{
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material.AddRenderQuery(attrs.GetNamedItem(at_name).c_str());
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}
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}
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material.RecomputeCombinedShaderDefines();
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m_Materials[pathname] = material;
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return material;
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}
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