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Add support for bump -bm (bump/normal multiplier)

pull/4393/head
Terence Russell 2022-02-17 22:10:46 -07:00
parent dff3620138
commit 17123ed4a1
4 changed files with 94 additions and 2 deletions
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6
code/AssetLib/Obj/ObjFileData.h
View File

@ -195,6 +195,9 @@ struct Material {
//! PBR Anisotropy
ai_real anisotropy;
//! bump map multipler (normal map scalar)(-bm)
ai_real bump_multiplier;
//! Constructor
Material() :
diffuse(ai_real(0.6), ai_real(0.6), ai_real(0.6)),
@ -208,7 +211,8 @@ struct Material {
sheen(ai_real(1.0), ai_real(1.0), ai_real(1.0)),
clearcoat_thickness(ai_real(0.0)),
clearcoat_roughness(ai_real(0.0)),
anisotropy(ai_real(0.0)) {
anisotropy(ai_real(0.0)),
bump_multiplier(ai_real(1.0)) {
std::fill_n(clamp, static_cast<unsigned int>(TextureTypeCount), false);
}

7
code/AssetLib/Obj/ObjFileImporter.cpp
View File

@ -51,6 +51,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assimp/scene.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/Importer.hpp>
#include <assimp/ObjMaterial.h>
#include <memory>
static const aiImporterDesc desc = {
@ -657,6 +658,9 @@ void ObjFileImporter::createMaterials(const ObjFile::Model *pModel, aiScene *pSc
if (0 != pCurrentMaterial->textureBump.length) {
mat->AddProperty(&pCurrentMaterial->textureBump, AI_MATKEY_TEXTURE_HEIGHT(0));
mat->AddProperty(&uvwIndex, 1, AI_MATKEY_UVWSRC_HEIGHT(0));
if (pCurrentMaterial->bump_multiplier != 1.0) {
mat->AddProperty(&pCurrentMaterial->bump_multiplier, 1, AI_MATKEY_OBJ_BUMPMULT_HEIGHT(0));
}
if (pCurrentMaterial->clamp[ObjFile::Material::TextureBumpType]) {
addTextureMappingModeProperty(mat, aiTextureType_HEIGHT);
}
@ -665,6 +669,9 @@ void ObjFileImporter::createMaterials(const ObjFile::Model *pModel, aiScene *pSc
if (0 != pCurrentMaterial->textureNormal.length) {
mat->AddProperty(&pCurrentMaterial->textureNormal, AI_MATKEY_TEXTURE_NORMALS(0));
mat->AddProperty(&uvwIndex, 1, AI_MATKEY_UVWSRC_NORMALS(0));
if (pCurrentMaterial->bump_multiplier != 1.0) {
mat->AddProperty(&pCurrentMaterial->bump_multiplier, 1, AI_MATKEY_OBJ_BUMPMULT_NORMALS(0));
}
if (pCurrentMaterial->clamp[ObjFile::Material::TextureNormalType]) {
addTextureMappingModeProperty(mat, aiTextureType_NORMALS);
}

6
code/AssetLib/Obj/ObjFileMtlImporter.cpp
View File

@ -472,7 +472,11 @@ void ObjFileMtlImporter::getTextureOption(bool &clamp, int &clampIndex, aiString
}
skipToken = 2;
} else if (!ASSIMP_strincmp(pPtr, BlendUOption.c_str(), static_cast<unsigned int>(BlendUOption.size())) || !ASSIMP_strincmp(pPtr, BlendVOption.c_str(), static_cast<unsigned int>(BlendVOption.size())) || !ASSIMP_strincmp(pPtr, BoostOption.c_str(), static_cast<unsigned int>(BoostOption.size())) || !ASSIMP_strincmp(pPtr, ResolutionOption.c_str(), static_cast<unsigned int>(ResolutionOption.size())) || !ASSIMP_strincmp(pPtr, BumpOption.c_str(), static_cast<unsigned int>(BumpOption.size())) || !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), static_cast<unsigned int>(ChannelOption.size()))) {
} else if (!ASSIMP_strincmp(pPtr, BumpOption.c_str(), static_cast<unsigned int>(BumpOption.size()))) {
DataArrayIt it = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
getFloat(it, m_DataItEnd, m_pModel->m_pCurrentMaterial->bump_multiplier);
skipToken = 2;
} else if (!ASSIMP_strincmp(pPtr, BlendUOption.c_str(), static_cast<unsigned int>(BlendUOption.size())) || !ASSIMP_strincmp(pPtr, BlendVOption.c_str(), static_cast<unsigned int>(BlendVOption.size())) || !ASSIMP_strincmp(pPtr, BoostOption.c_str(), static_cast<unsigned int>(BoostOption.size())) || !ASSIMP_strincmp(pPtr, ResolutionOption.c_str(), static_cast<unsigned int>(ResolutionOption.size())) || !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), static_cast<unsigned int>(ChannelOption.size()))) {
skipToken = 2;
} else if (!ASSIMP_strincmp(pPtr, ModifyMapOption.c_str(), static_cast<unsigned int>(ModifyMapOption.size()))) {
skipToken = 3;

77
include/assimp/ObjMaterial.h 100644
View File

@ -0,0 +1,77 @@
/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/
/** @file OBJMATERIAL.h
* @brief Obj-specific material macros
*
*/
#ifndef AI_OBJMATERIAL_H_INC
#define AI_OBJMATERIAL_H_INC
#ifdef __GNUC__
# pragma GCC system_header
#endif
#include <assimp/material.h>
// ---------------------------------------------------------------------------
// Pure key names for all obj texture-related properties
//! @cond MATS_DOC_FULL
// support for bump -bm
#define _AI_MATKEY_OBJ_BUMPMULT_BASE "$tex.bumpmult"
//! @endcond
// ---------------------------------------------------------------------------
#define AI_MATKEY_OBJ_BUMPMULT(type, N) _AI_MATKEY_OBJ_BUMPMULT_BASE, type, N
//! @cond MATS_DOC_FULL
#define AI_MATKEY_OBJ_BUMPMULT_NORMALS(N) \
AI_MATKEY_OBJ_BUMPMULT(aiTextureType_NORMALS, N)
#define AI_MATKEY_OBJ_BUMPMULT_HEIGHT(N) \
AI_MATKEY_OBJ_BUMPMULT(aiTextureType_HEIGHT, N)
//! @endcond
#endif