Im making a custom Wavefront .obj loader and the images loads but the texture is flipped. What is the problem? here is code and a image.
std::vector<UINT> vertexIndices, uvIndices, normalIndices;
std::vector<UINT> indices(4119);
std::vector< XMFLOAT3> temp_vertices;
std::vector< XMFLOAT2 > temp_uvs;
std::vector< XMFLOAT3 > temp_normals;
std::vector< XMFLOAT3> out_vertices;
std::vector< XMFLOAT3> out_normals;
std::vector< XMFLOAT2> out_uvs;
std::vector<Vertex::Basic32> vertices( 4119);
const char *path = "C:\\Users\\terry\\Desktop\\untitled.txt";
FILE * file = fopen(path, "r");
if( file == NULL ){
printf("Impossible to open the file !\n");
return;
}
while( 1 ){
char lineHeader[128];
// read the first word of the line
int res = fscanf(file, "%s", lineHeader);
if (res == EOF)
break; // EOF = End Of File. Quit the loop.
// else : parse lineHeader
if ( strcmp( lineHeader, "v" ) == 0 ){
XMFLOAT3 vertex;
fscanf(file, "%f %f %f\n", &vertex.x, &vertex.y, &vertex.z );
temp_vertices.push_back(vertex);
}else if ( strcmp( lineHeader, "vt" ) == 0 ){
XMFLOAT2 uv;
fscanf(file, "%f %f\n", &uv.x, &uv.y );
temp_uvs.push_back(uv);
}else if ( strcmp( lineHeader, "vn" ) == 0 ){
XMFLOAT3 normal;
fscanf(file, "%f %f %f\n", &normal.x, &normal.y, &normal.z );
temp_normals.push_back(normal);
}else if ( strcmp( lineHeader, "f" ) == 0 ){
std::string vertex1, vertex2, vertex3;
unsigned int vertexIndex[3], uvIndex[3], normalIndex[3];
int matches = fscanf(file, "%d/%d/%d %d/%d/%d %d/%d/%d\n", &vertexIndex[0], &uvIndex[0], &normalIndex[0], &vertexIndex[1], &uvIndex[1], &normalIndex[1], &vertexIndex[2], &uvIndex[2], &normalIndex[2] );
if (matches != 9){
printf("File can't be read by our simple parser : ( Try exporting with other options\n");
return;
}
vertexIndices.push_back(vertexIndex[0]);
vertexIndices.push_back(vertexIndex[1]);
vertexIndices.push_back(vertexIndex[2]);
uvIndices .push_back(uvIndex[0]);
uvIndices .push_back(uvIndex[1]);
uvIndices .push_back(uvIndex[2]);
normalIndices.push_back(normalIndex[0]);
normalIndices.push_back(normalIndex[1]);
normalIndices.push_back(normalIndex[2]);
}
}
for( unsigned int i=0; i<4119; i++ ){
unsigned int vertexIndex = vertexIndices[i];
XMFLOAT3 vertex = temp_vertices[ vertexIndex-1 ];
out_vertices.push_back(vertex);
unsigned int normalIndex = normalIndices[i];
XMFLOAT3 normal = temp_normals[ normalIndex-1 ];
out_normals.push_back(normal);
unsigned int uvIndex = uvIndices[i];
XMFLOAT2 uv = temp_uvs[ uvIndex-1 ];
out_uvs.push_back(uv);
}
for( unsigned int i=0; i<4119; i++ ){
vertices[i].Pos = out_vertices[i];
vertices[i].Normal = out_normals[i];
vertices[i].Tex = out_uvs[i];
vertices[i].Tex.y = vertices[i].Tex.y * -1.0f;
indices[i] = i;
}
