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/* Copyright (C) 2024 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "MaterialManager.h"
#include "graphics/PreprocessorWrapper.h"
#include "maths/MathUtil.h"
#include "maths/Vector4D.h"
#include "ps/CLogger.h"
#include "ps/ConfigDB.h"
#include "ps/CStrInternStatic.h"
#include "ps/Filesystem.h"
#include "ps/XML/Xeromyces.h"
#include "renderer/RenderingOptions.h"
#include <sstream>
CMaterialManager::CMaterialManager()
{
qualityLevel = 5.0;
CFG_GET_VAL("materialmgr.quality", qualityLevel);
qualityLevel = Clamp(qualityLevel, 0.0f, 10.0f);
if (VfsDirectoryExists(L"art/materials/") &&
!g_Xeromyces.AddValidator(g_VFS, "material", "art/materials/material.rng"))
{
LOGERROR("CMaterialManager: failed to load grammar file 'art/materials/material.rng'");
}
}
CMaterial CMaterialManager::LoadMaterial(const VfsPath& pathname)
{
if (pathname.empty())
return CMaterial();
std::map<VfsPath, CMaterial>::iterator iter = m_Materials.find(pathname);
if (iter != m_Materials.end())
return iter->second;
CXeromyces xeroFile;
if (xeroFile.Load(g_VFS, pathname, "material") != PSRETURN_OK)
return CMaterial();
#define EL(x) int el_##x = xeroFile.GetElementID(#x)
#define AT(x) int at_##x = xeroFile.GetAttributeID(#x)
EL(alpha_blending);
EL(alternative);
EL(define);
EL(shader);
EL(uniform);
EL(renderquery);
EL(required_texture);
AT(effect);
AT(if);
AT(define);
AT(quality);
AT(material);
AT(name);
AT(value);
#undef AT
#undef EL
CPreprocessorWrapper preprocessor;
CMaterial material;
material.AddStaticUniform("qualityLevel", CVector4D(qualityLevel, 0, 0, 0));
XMBElement root = xeroFile.GetRoot();
XERO_ITER_EL(root, node)
{
int token = node.GetNodeName();
XMBAttributeList attrs = node.GetAttributes();
if (token == el_alternative)
{
CStr cond = attrs.GetNamedItem(at_if);
if (cond.empty() || !preprocessor.TestConditional(cond))
{
cond = attrs.GetNamedItem(at_quality);
if (cond.empty())
continue;
else
{
if (cond.ToFloat() <= qualityLevel)
continue;
}
}
material = LoadMaterial(VfsPath("art/materials") / attrs.GetNamedItem(at_material).FromUTF8());
break;
}
else if (token == el_alpha_blending)
{
material.SetUsesAlphaBlending(true);
}
else if (token == el_shader)
{
material.SetShaderEffect(attrs.GetNamedItem(at_effect));
}
else if (token == el_define)
{
material.AddShaderDefine(CStrIntern(attrs.GetNamedItem(at_name)), CStrIntern(attrs.GetNamedItem(at_value)));
}
else if (token == el_uniform)
{
std::stringstream str(attrs.GetNamedItem(at_value));
CVector4D vec;
str >> vec.X >> vec.Y >> vec.Z >> vec.W;
material.AddStaticUniform(attrs.GetNamedItem(at_name).c_str(), vec);
}
else if (token == el_renderquery)
{
material.AddRenderQuery(attrs.GetNamedItem(at_name).c_str());
}
else if (token == el_required_texture)
{
material.AddRequiredSampler(attrs.GetNamedItem(at_name));
if (!attrs.GetNamedItem(at_define).empty())
material.AddShaderDefine(CStrIntern(attrs.GetNamedItem(at_define)), str_1);
}
}
m_Materials[pathname] = material;
return material;
}
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