Kearwood Gilbert
8be1aff1ba
FBX Importing toolchain now detects need for vertex tangent vectors based on presence of Normal maps, and only imports them when needed. If tangent vectors are needed, but not present in the FBX file, they are calculated during the import process. Importing tangents increases the size of the vertex data and reduces the ability to share vertexes for multiple faces when using indexed triangle rendering; therefore, they are imported sparingly.
289 lines
13 KiB
C++
289 lines
13 KiB
C++
//
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// KRMaterialManager.cpp
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// KREngine
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//
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// Copyright 2012 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#include "KREngine-common.h"
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#include "KRMaterialManager.h"
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KRMaterialManager::KRMaterialManager(KRContext &context, KRTextureManager *pTextureManager, KRShaderManager *pShaderManager) : KRContextObject(context)
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{
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m_pTextureManager = pTextureManager;
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m_pShaderManager = pShaderManager;
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}
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KRMaterialManager::~KRMaterialManager() {
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}
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unordered_map<std::string, KRMaterial *> &KRMaterialManager::getMaterials()
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{
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return m_materials;
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}
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void KRMaterialManager::configure(bool blend_enable, GLenum blend_src, GLenum blend_dest, bool depth_test_enable, GLenum depth_func, bool depth_write_enable) {
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if(blend_enable) {
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GLDEBUG(glEnable(GL_BLEND));
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GLDEBUG(glBlendFunc(blend_src, blend_dest));
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} else {
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GLDEBUG(glDisable(GL_BLEND));
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}
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if(depth_test_enable) {
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GLDEBUG(glEnable(GL_DEPTH_TEST));
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GLDEBUG(glDepthFunc(depth_func));
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} else {
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GLDEBUG(glDisable(GL_DEPTH_TEST));
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}
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if(depth_write_enable) {
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GLDEBUG(glDepthMask(GL_TRUE));
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} else {
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GLDEBUG(glDepthMask(GL_FALSE));
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}
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}
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KRMaterial *KRMaterialManager::getMaterial(const std::string &name) {
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std::string lowerName = name;
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std::transform(lowerName.begin(), lowerName.end(),
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lowerName.begin(), ::tolower);
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unordered_map<std::string, KRMaterial *>::iterator itr = m_materials.find(lowerName);
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if(itr == m_materials.end()) {
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fprintf(stderr, "Material not found: %s\n", name.c_str());
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// Not found
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return NULL;
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} else {
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return (*itr).second;
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}
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}
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void KRMaterialManager::add(KRMaterial *new_material) {
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// FINDME, TODO - Potential memory leak if multiple materials with the same name are added
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std::string lowerName = new_material->getName();
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std::transform(lowerName.begin(), lowerName.end(),
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lowerName.begin(), ::tolower);
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m_materials[lowerName] = new_material;
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}
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bool KRMaterialManager::load(const char *szName, KRDataBlock *data) {
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KRMaterial *pMaterial = NULL;
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char szSymbol[16][256];
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char *pScan = (char *)data->getStart();
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char *pEnd = (char *)data->getEnd();
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while(pScan < pEnd) {
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// Scan through whitespace
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while(pScan < pEnd && (*pScan == ' ' || *pScan == '\t' || *pScan == '\r' || *pScan == '\n')) {
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pScan++;
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}
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if(*pScan == '#') {
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// Line is a comment line
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// Scan to the end of the line
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while(pScan < pEnd && *pScan != '\r' && *pScan != '\n') {
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pScan++;
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}
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} else {
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int cSymbols = 0;
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while(pScan < pEnd && *pScan != '\n' && *pScan != '\r') {
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char *pDest = szSymbol[cSymbols++];
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while(pScan < pEnd && *pScan != ' ' && *pScan != '\n' && *pScan != '\r') {
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if(*pScan >= 'A' && *pScan <= 'Z') {
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*pDest++ = *pScan++ + 'a' - 'A'; // convert to lower case for case sensitve comparison later
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} else {
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*pDest++ = *pScan++;
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}
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}
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*pDest = '\0';
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// Scan through whitespace, but don't advance to next line
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while(pScan < pEnd && (*pScan == ' ' || *pScan == '\t')) {
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pScan++;
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}
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}
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if(cSymbols > 0) {
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if(strcmp(szSymbol[0], "newmtl") == 0 && cSymbols >= 2) {
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pMaterial = new KRMaterial(*m_pContext, szSymbol[1]);
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m_materials[szSymbol[1]] = pMaterial;
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}
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if(pMaterial != NULL) {
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if(strcmp(szSymbol[0], "alpha_mode") == 0) {
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if(cSymbols == 2) {
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if(strcmp(szSymbol[1], "test") == 0) {
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pMaterial->setAlphaMode(KRMaterial::KRMATERIAL_ALPHA_MODE_TEST);
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} else if(strcmp(szSymbol[1], "blendoneside") == 0) {
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pMaterial->setAlphaMode(KRMaterial::KRMATERIAL_ALPHA_MODE_BLENDONESIDE);
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} else if(strcmp(szSymbol[1], "blendtwoside") == 0) {
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pMaterial->setAlphaMode(KRMaterial::KRMATERIAL_ALPHA_MODE_BLENDONESIDE);
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} else {
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pMaterial->setAlphaMode(KRMaterial::KRMATERIAL_ALPHA_MODE_OPAQUE);
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}
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}
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} else if(strcmp(szSymbol[0], "ka") == 0) {
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char *pScan2 = szSymbol[1];
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float r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setAmbient(KRVector3(r, r, r));
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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float g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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float b = strtof(pScan2, &pScan2);
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pMaterial->setAmbient(KRVector3(r, g, b));
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}
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} else if(strcmp(szSymbol[0], "kd") == 0) {
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char *pScan2 = szSymbol[1];
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float r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setDiffuse(KRVector3(r, r, r));
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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float g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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float b = strtof(pScan2, &pScan2);
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pMaterial->setDiffuse(KRVector3(r, g, b));
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}
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} else if(strcmp(szSymbol[0], "ks") == 0) {
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char *pScan2 = szSymbol[1];
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float r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setSpecular(KRVector3(r, r, r));
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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float g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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float b = strtof(pScan2, &pScan2);
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pMaterial->setSpecular(KRVector3(r, g, b));
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}
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} else if(strcmp(szSymbol[0], "kr") == 0) {
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char *pScan2 = szSymbol[1];
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float r = strtof(pScan2, &pScan2);
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if(cSymbols == 2) {
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pMaterial->setReflection(KRVector3(r, r, r));
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} else if(cSymbols == 4) {
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pScan2 = szSymbol[2];
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float g = strtof(pScan2, &pScan2);
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pScan2 = szSymbol[3];
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float b = strtof(pScan2, &pScan2);
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pMaterial->setReflection(KRVector3(r, g, b));
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}
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} else if(strcmp(szSymbol[0], "tr") == 0) {
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char *pScan2 = szSymbol[1];
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float a = strtof(pScan2, &pScan2);
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pMaterial->setTransparency(a);
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} else if(strcmp(szSymbol[0], "ns") == 0) {
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char *pScan2 = szSymbol[1];
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float a = strtof(pScan2, &pScan2);
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pMaterial->setShininess(a);
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} else if(strncmp(szSymbol[0], "map", 3) == 0) {
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// Truncate file extension
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char *pScan2 = szSymbol[1];
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char *pLastPeriod = NULL;
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while(*pScan2 != '\0') {
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if(*pScan2 == '.') {
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pLastPeriod = pScan2;
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}
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pScan2++;
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}
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if(pLastPeriod) {
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*pLastPeriod = '\0';
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}
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KRVector2 texture_scale = KRVector2(1.0f, 1.0f);
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KRVector2 texture_offset = KRVector2(0.0f, 0.0f);
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int iScanSymbol = 2;
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int iScaleParam = -1;
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int iOffsetParam = -1;
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while(iScanSymbol < cSymbols) {
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if(strcmp(szSymbol[iScanSymbol], "-s") == 0) {
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// Scale
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iScaleParam = 0;
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iOffsetParam = -1;
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} else if(strcmp(szSymbol[iScanSymbol], "-o") == 0) {
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// Offset
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iOffsetParam = 0;
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iScaleParam = -1;
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} else {
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char *pScan3 = szSymbol[iScanSymbol];
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float v = strtof(pScan3, &pScan3);
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if(iScaleParam == 0) {
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texture_scale.x = v;
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iScaleParam++;
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} else if(iScaleParam == 1) {
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texture_scale.y = v;
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iScaleParam++;
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} else if(iOffsetParam == 0) {
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texture_offset.x = v;
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iOffsetParam++;
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} else if(iOffsetParam == 1) {
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texture_offset.y = v;
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iOffsetParam++;
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}
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}
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iScanSymbol++;
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}
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if(strcmp(szSymbol[0], "map_ka") == 0) {
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pMaterial->setAmbientMap(szSymbol[1], texture_scale, texture_offset);
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} else if(strcmp(szSymbol[0], "map_kd") == 0) {
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pMaterial->setDiffuseMap(szSymbol[1], texture_scale, texture_offset);
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} else if(strcmp(szSymbol[0], "map_ks") == 0) {
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pMaterial->setSpecularMap(szSymbol[1], texture_scale, texture_offset);
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} else if(strcmp(szSymbol[0], "map_normal") == 0) {
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pMaterial->setNormalMap(szSymbol[1], texture_scale, texture_offset);
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} else if(strcmp(szSymbol[0], "map_reflection") == 0) {
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pMaterial->setReflectionMap(szSymbol[1], texture_scale, texture_offset);
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} else if(strcmp(szSymbol[0], "map_reflectioncube") == 0) {
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pMaterial->setReflectionCube(szSymbol[1]);
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}
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}
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}
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}
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}
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}
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delete data;
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return true;
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}
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