void Model::processMaterial(const aiScene* scene)
{
aiColor4D ka, kd, ks;
GLuint texDiffuse, texNormal, texSpecular;
aiString str;
for(GLuint i = 0; i < scene->mNumMaterials; i++)
{
if(AI_SUCCESS == scene->mMaterials[i]->GetTexture(aiTextureType_DIFFUSE, 0, &str))
texDiffuse = TextureFromFile(str.C_Str(), this->directory);
else
texDiffuse = 0;
if(AI_SUCCESS == scene->mMaterials[i]->GetTexture(aiTextureType_HEIGHT, 0, &str))
texNormal = TextureFromFile(str.C_Str(), this->directory);
else
texNormal = 0;
if(AI_SUCCESS == scene->mMaterials[i]->GetTexture(aiTextureType_SPECULAR, 0, &str))
texSpecular = TextureFromFile(str.C_Str(), this->directory);
else
texSpecular = 0;
aiGetMaterialColor(scene->mMaterials[i], AI_MATKEY_COLOR_AMBIENT, &ka);
aiGetMaterialColor(scene->mMaterials[i], AI_MATKEY_COLOR_DIFFUSE, &kd);
aiGetMaterialColor(scene->mMaterials[i], AI_MATKEY_COLOR_SPECULAR, &ks);
m_material.push_back(Material(ka, kd, ks, texDiffuse, texNormal, texSpecular));
}
}
vector<Texture> Model::loadMaterialTextures(aiMaterial* mat, aiTextureType type, string typeName)
{
vector<Texture> textures;
for(GLuint i = 0; i < mat->GetTextureCount(type); i++)
{
aiString str;
mat->GetTexture(type, i, &str);
// Check if texture was loaded before and if so, continue to next iteration: skip loading a new texture
GLboolean skip = false;
for(GLuint j = 0; j < textures_loaded.size(); j++)
{
if(textures_loaded[j].path == str)
{
textures.push_back(textures_loaded[j]);
skip = true; // A texture with the same file path has already been loaded, continue to next one. (optimization)
break;
}
}
if(!skip)
{ // If texture hasn't been loaded already, load it !
Texture texture;
texture.id = TextureFromFile(str.C_Str(), this->directory);
texture.type = typeName;
texture.path = str;
textures.push_back(texture);
this->textures_loaded.push_back(texture); // Store it as texture loaded for entire model, to ensure we won't unnecesery load duplicate textures.
}
}
return textures;
}
vector<Texture> Model::loadMaterialTextures(aiMaterial* mat, aiTextureType type, string typeName)
{
vector<Texture> textures;
for (GLuint i = 0; i < mat->GetTextureCount(type); i++)
{
aiString str;
mat->GetTexture(type, i, &str);
GLboolean skip = false;
for (GLuint j = 0; j < textures_loaded.size(); j++)
{
if (textures_loaded[j].path == str)
{
textures.push_back(textures_loaded[j]);
skip = true;
break;
}
}
if (!skip)
{
Texture texture;
texture.id = TextureFromFile(str.C_Str(), this->directory);
texture.type = typeName;
texture.path = str;
textures.push_back(texture);
this->textures_loaded.push_back(texture);
}
}
return textures;
}
vector<Texture> Model::loadMaterialTextures(aiMaterial* mat, aiTextureType type, string typeName)
{
vector<Texture> textures;
for (GLuint i = 0; i < mat->GetTextureCount(type); i++)
{
aiString str;
mat->GetTexture(type, i, &str);
//Check if texture was loaded before and if so, continue to next iteration: skip loading a new texture
GLboolean skip = false;
for (GLuint j = 0; j < textures_loaded.size(); j++)
{
if (textures_loaded[j].path == str)
{
textures.push_back(textures_loaded[j]);
skip = true;
break;
}
}
if (!skip)
{
//If texture hasn't been loaded already, load it
Texture texture;
texture.id = TextureFromFile(str.C_Str(), this->directory);
texture.type = typeName;
texture.path = str;
textures.push_back(texture);
this->textures_loaded.push_back(texture);
}
}
return textures;
}
std::vector<Texture> Model::loadMaterialTextures(aiMaterial *mat, aiTextureType type, std::string typeName) {
std::vector<Texture> textures;
for(GLuint i = 0; i < mat->GetTextureCount(type); i++) {
aiString str;
mat->GetTexture(type, i, &str);
Texture texture;
texture.id = TextureFromFile(str.C_Str(), directory);
texture.type = typeName;
texture.path = str.C_Str();
textures.push_back(texture);
}
return textures;
}
shared_ptr<Texture> TexturesManager::CreateTexture2D(string path, string directory, TextureType type, float blend, TextureBlendOperation op)
{
auto it = find_if(texturesBuffers.begin(), texturesBuffers.end(), [&path](const shared_ptr<Texture>& obj) {return obj->path == path; });
if (it != texturesBuffers.end())
{
auto index = std::distance(texturesBuffers.begin(), it);
return texturesBuffers[index];
}
//It's a new texture
int width = 0, height = 0;
string filename = directory + '/' + string(path);
unique_ptr<unsigned char> tempImage = TextureFromFile(filename, width, height);
shared_ptr<Texture> texturePtr = make_shared<Texture2D>(width, height, type, path, &*tempImage, blend, op);
texturesBuffers.push_back(texturePtr);
return texturePtr;
}
// Checks all material textures of a given type and loads the textures if they're not loaded yet.
// The required info is returned as a Texture struct.
vector<Texture> * Model::loadMaterialTextures(const aiMaterial* mat, aiTextureType type) {
vector<Texture> allTextures;
vector<Texture> * textures = new vector<Texture>();
for(GLuint i = 0; i < mat->GetTextureCount(type); i++) {
aiString str;
mat->GetTexture(type, i, &str);
// Check if texture was loaded before and if so, continue to next iteration: skip loading a new texture
GLboolean skip = false;
for(GLuint j = 0; j < allTextures.size(); j++) {
if(allTextures.at(j).path == str) {
textures->push_back(allTextures.at(j));
skip = true; // A texture with the same filepath has already been loaded, continue to next one. (optimization)
break;
}
}
if(!skip) { // If texture hasn't been loaded already, load it
Texture texture(TextureFromFile(str.C_Str(), directory == "" ? NULL : directory.c_str()), str);
textures->push_back(texture);
// Store it as texture loaded for entire model, to ensure we won't unnecesery load duplicate textures.
allTextures.push_back(texture);
}
}
return textures;
}
void CMyOGLApp::Init()
{
// clear color set to blue-ish
glClearColor(0.125f, 0.25f, 0.5f, 1.0f);
glEnable(GL_CULL_FACE); // turn on back-face culling
glEnable(GL_DEPTH_TEST); // enable depth-test
//
// define the geometry
//
Vertex vert[] =
{
// x, y, z nx,ny,nz s, t
{glm::vec3(-10, 0, -10), glm::vec3(0, 1, 0), glm::vec2(0, 0)},
{glm::vec3( 10, 0, -10), glm::vec3(0, 1, 0), glm::vec2(1, 0)},
{glm::vec3(-10, 0, 10), glm::vec3(0, 1, 0), glm::vec2(0, 1)},
{glm::vec3( 10, 0, 10), glm::vec3(0, 1, 0), glm::vec2(1, 1)},
};
// create index buffer
GLushort indices[]=
{
1,0,2,
1,2,3,
};
// create a VAO
glGenVertexArrays(1, &m_vaoID);
// activate the new VAO m_vaoID
glBindVertexArray(m_vaoID);
// create a VBO
glGenBuffers(1, &m_vboID);
glBindBuffer(GL_ARRAY_BUFFER, m_vboID); // activate the VBO m_vboID
// load the data stored in array vert into the VBO (essentially: upload the data to the GPU)
glBufferData( GL_ARRAY_BUFFER, // allocate memory for the active VBO and set its data
sizeof(vert), // size of the VBO allocation, in bytes
vert, // load data into the VBO from this location of the system memory
GL_STATIC_DRAW); // we only want to store data into the VBO once (STATIC), and we want to use the VBO as a source for drawing our scene at each frame (DRAW)
// for other usage flags see http://www.opengl.org/sdk/docs/man/xhtml/glBufferData.xml
// {STREAM, STATIC, DYNAMIC} and {DRAW, READ, COPY}
// activate the first general attribute 'channel' in the VAO
glEnableVertexAttribArray(0);
glVertexAttribPointer(
0, // set the attributes of VAO channel 0
3, // this channel has 3 componenets
GL_FLOAT, // each of those componenets are floats
GL_FALSE, // do not normalize
sizeof(Vertex), // stride
0 // channel 0`s data begins at the beginning of the VBO, no offset
);
// activate 'channel' idx 1
glEnableVertexAttribArray(1);
glVertexAttribPointer(
1,
3,
GL_FLOAT,
GL_FALSE,
sizeof(Vertex),
(void*)(sizeof(glm::vec3)) );
// texture coordinates
glEnableVertexAttribArray(2);
glVertexAttribPointer(
2,
2,
GL_FLOAT,
GL_FALSE,
sizeof(Vertex),
(void*)(2*sizeof(glm::vec3)) );
// create index buffer
glGenBuffers(1, &m_ibID);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ibID);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
//
// shader initialization
//
GLuint vs_ID = loadShader(GL_VERTEX_SHADER, "myVert.vert");
GLuint fs_ID = loadShader(GL_FRAGMENT_SHADER, "myFrag.frag");
// create the shader container (program)
m_programID = glCreateProgram();
// attach the vertex and fragment (pixel) shaders to the program
glAttachShader(m_programID, vs_ID);
glAttachShader(m_programID, fs_ID);
// make correspondances between the VAO channels and the shader 'in' variables
// IMPORTANT: do this prior to linking the programs!
glBindAttribLocation( m_programID, // ID of the shader program from which we want to map a variable to a channel
0, // the VAO channel number we want to bind the variable to
"vs_in_pos"); // the name of the variable in the shader
glBindAttribLocation( m_programID, 1, "vs_in_normal");
glBindAttribLocation( m_programID, 2, "vs_in_tex0");
// link the shaders
glLinkProgram(m_programID);
// check the linking
GLint infoLogLength = 0, result = 0;
glGetProgramiv(m_programID, GL_LINK_STATUS, &result);
glGetProgramiv(m_programID, GL_INFO_LOG_LENGTH, &infoLogLength);
if ( GL_FALSE == result )
{
std::vector<char> ProgramErrorMessage( infoLogLength );
glGetProgramInfoLog(m_programID, infoLogLength, NULL, &ProgramErrorMessage[0]);
fprintf(stdout, "%s\n", &ProgramErrorMessage[0]);
char* aSzoveg = new char[ProgramErrorMessage.size()];
memcpy( aSzoveg, &ProgramErrorMessage[0], ProgramErrorMessage.size());
MessageBoxA(0, aSzoveg, "Sáder Huba panasza", 0);
delete aSzoveg;
}
// we can dispose of the vertex and fragment shaders
glDeleteShader( vs_ID );
glDeleteShader( fs_ID );
//
// other initializations
//
// set the projection matrix
m_matProj = glm::perspective( 45.0f, m_client_width/(float)m_client_height, 1.0f, 1000.0f );
// query the IDs of the shader uniform variables
m_loc_world = glGetUniformLocation( m_programID, "world");
m_loc_worldIT = glGetUniformLocation( m_programID, "worldIT");
m_loc_view = glGetUniformLocation( m_programID, "view" );
m_loc_proj = glGetUniformLocation( m_programID, "proj" );
m_loc_texture = glGetUniformLocation( m_programID, "texture" );
// generate the texture
m_textureID = TextureFromFile("texture.jpg");
}
