Model::Mesh::Mesh(const aiMesh *aiMesh, GLuint progId) {
- std::vector<glm::vec3> vertices, normals;
+ std::vector<glm::vec3> vertices, normals, tangents, bitangents;
std::vector<glm::vec2> texCoords;
for (int i = 0; i < aiMesh->mNumVertices; i++) {
vertices.push_back(glm::vec3(v.x, v.y, v.z));
}
if (aiMesh->HasNormals()) {
- const aiVector3D v = aiMesh->mNormals[i];
+ aiVector3D v = aiMesh->mNormals[i];
normals.push_back(glm::vec3(v.x, v.y, v.z));
} else {
normals.push_back(glm::vec3(0));
}
+ if (aiMesh->HasTangentsAndBitangents()) {
+ aiVector3D t = aiMesh->mTangents[i];
+ tangents.push_back(glm::vec3(t.x, t.y, t.z));
+ aiVector3D b = aiMesh->mBitangents[i];
+ bitangents.push_back(glm::vec3(b.x, b.y, b.z));
+ } else {
+ tangents.push_back(glm::vec3(0));
+ bitangents.push_back(glm::vec3(0));
+ }
// check for texture coord set 0
if (aiMesh->HasTextureCoords(0)) {
const aiVector3D v = aiMesh->mTextureCoords[0][i];
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
- GLuint vbos[4];
- glGenBuffers(4, vbos);
+ GLuint vbos[6];
+ glGenBuffers(6, vbos);
GLuint vertexVbo = vbos[0], normalVbo = vbos[1], texCoordVbo = vbos[2], indicesVbo = vbos[3];
+ GLuint tangentVbo = vbos[4], bitangentVbo = vbos[5];
GLuint posLoc = glGetAttribLocation(progId, "vPosition");
- GLuint normalLoc = glGetAttribLocation(progId, "vNormal");
- GLuint texCoordLoc = glGetAttribLocation(progId, "vTexCoord");
-
glBindBuffer(GL_ARRAY_BUFFER, vertexVbo);
glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(glm::vec3), &vertices[0], GL_STATIC_DRAW);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+ GLuint normalLoc = glGetAttribLocation(progId, "vNormal");
glBindBuffer(GL_ARRAY_BUFFER, normalVbo);
glBufferData(GL_ARRAY_BUFFER, normals.size() * sizeof(glm::vec3), &normals[0], GL_STATIC_DRAW);
glEnableVertexAttribArray(normalLoc);
glVertexAttribPointer(normalLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+ GLuint texCoordLoc = glGetAttribLocation(progId, "vTexCoord");
glBindBuffer(GL_ARRAY_BUFFER, texCoordVbo);
glBufferData(GL_ARRAY_BUFFER, texCoords.size() * sizeof(glm::vec2), &texCoords[0], GL_STATIC_DRAW);
glEnableVertexAttribArray(texCoordLoc);
glVertexAttribPointer(texCoordLoc, 2, GL_FLOAT, GL_FALSE, 0, 0);
+ GLuint tangentLoc = glGetAttribLocation(progId, "tangent");
+ glBindBuffer(GL_ARRAY_BUFFER, tangentVbo);
+ glBufferData(GL_ARRAY_BUFFER, tangents.size() * sizeof(glm::vec3), &tangents[0], GL_STATIC_DRAW);
+ glEnableVertexAttribArray(tangentLoc);
+ glVertexAttribPointer(tangentLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+
+ GLuint bitangentLoc = glGetAttribLocation(progId, "bitangent");
+ glBindBuffer(GL_ARRAY_BUFFER, bitangentVbo);
+ glBufferData(GL_ARRAY_BUFFER, bitangents.size() * sizeof(glm::vec3), &bitangents[0], GL_STATIC_DRAW);
+ glEnableVertexAttribArray(bitangentLoc);
+ glVertexAttribPointer(bitangentLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indicesVbo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(GLuint), &indices[0], GL_STATIC_DRAW);
};
Model::Model(const std::string &path, GLuint progId): progId(progId) {
const aiScene *scene = importer.ReadFile(path,
- aiProcess_Triangulate |
- aiProcess_GenNormals);
+ aiProcess_Triangulate | aiProcess_CalcTangentSpace | aiProcess_GenNormals);
if (!scene) {
std::cerr << importer.GetErrorString() << std::endl;
exit(1);