void MainComponent::start() {
if (isRunning) {
return;
}
static const float vertices[] =
{
0.25, -0.25, 0.5, 1.0,
-0.25, -0.25, 0.5, 1.0,
0.25, 0.25, 0.5, 1.0
};
Shader shader = Shader();
glUseProgram(shader._program);
GLuint vbo;
glCreateBuffers(1, &vbo);
glCreateVertexArrays(1, &_vao);
glBindVertexArray(_vao);
glNamedBufferStorage(vbo, sizeof(vertices), vertices, 0);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexArrayVertexBuffer(_vao, 0, vbo, 0, 16);
glVertexArrayAttribFormat(_vao, 0, 4, GL_FLOAT, GL_FALSE, 0);
glVertexArrayAttribBinding(_vao, 0, 0);
glEnableVertexArrayAttrib(_vao, 0);
glEnableVertexAttribArray(0);
run();
}
std::vector<Shader> MaterialShellRenderer::GetShaderList()
{
std::vector<Shader> shader_list;
shader_list.push_back(Shader(material_shell_object_VS_vert, GL_VERTEX_SHADER, "material_shell_object_VS"));
shader_list.push_back(Shader(material_shell_object_FS_frag, GL_FRAGMENT_SHADER, "material_shell_object_FS"));
return shader_list;
}
Framebuffer::Framebuffer(){
this->window = Window::getInstance();
// Create frame buffer
glGenFramebuffers(1, &framebuffer);
setupFramebufferTexture(GL_RGBA, 1);
setupDepthStencilBuffer();
Shader framebuffer_shader;
// Load framebuffer shader
if (Profile::getInstance()->getFxaaLevel()){
framebuffer_shader = Shader("shaders/flat_drawable_noflip.vs",
"shaders/framebuffer_fxaa.fs");
} else {
framebuffer_shader = Shader("shaders/flat_drawable_noflip.vs",
"shaders/flat_drawable.fs");
}
addShaderPass(framebuffer_shader);
// Create the window to draw the framebuffer onto
framebuffer_window = new FlatDrawable(framebuffer_shader, 1.0, 1.0, glm::vec2(0.0, 0.0));
framebuffer_window->attachTexture(framebuffer_texture);
}
/*static*/
Material*
EngineHelper::MakeDebugMaterial(){
Material *debug = new Material("Default material");
Shader debugVertShader = Shader("vertex_shader.txt",ShaderTypes::VERTEX_SHADER);
Shader debugFragShader = Shader("fragment_shader.txt",ShaderTypes::FRAGMENT_SHADER);
debug->AddShader(debugVertShader);
debug->AddShader(debugFragShader);
debug->Compile();
return debug;
}
/*static*/
Material*
EngineHelper::MakeDefaultMaterial(){
Material *defaultMaterial = new Material("Default material");
Shader vertShader = Shader("vertex_position_shader.txt",ShaderTypes::VERTEX_SHADER);
Shader fragShader = Shader("fragment_shader.txt",ShaderTypes::FRAGMENT_SHADER);
defaultMaterial->AddShader(vertShader);
defaultMaterial->AddShader(fragShader);
defaultMaterial->Compile();
return defaultMaterial;
}
//-----------------------------------------------------------------------------
// Class: Context
// Method: setup
// Description: Before the rendering is started, we need to setup the different
// parameters.
//-----------------------------------------------------------------------------
void
Context::setup ()
{
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
std::cerr << "Couldn't initialize SDL.\n";
exit(1);
}
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL, 1);
SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
mainWindow_ = SDL_SetVideoMode(w_, h_, 32, SDL_OPENGL | SDL_RESIZABLE);
if ( mainWindow_ == NULL ) {
std::cerr << "Error setting videomode.\n";
exit(1);
}
SDL_WM_SetCaption(windowName_.c_str(), NULL);
// Catch error
GLenum res = glewInit();
if ( res != GLEW_OK ) {
std::cerr << "Error: " << glewGetErrorString(res) << "\n";
exit(1);
}
// Set the different options for the objects.
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_TEXTURE_3D);
// Add shaders to shaderlist
shaders["default"] = Shader();
shaders["default"].add("shaders/default.vs", GL_VERTEX_SHADER);
shaders["default"].add("shaders/default.fs", GL_FRAGMENT_SHADER);
shaders["default"].link();
shaders["default"].setUniformLocation("vMVP");
shaders["default"].setUniformLocation("texTransform");
shaders["default"].setUniformLocation("gSampler");
shaders["terrain"] = Shader();
shaders["terrain"].add("shaders/terrain.vs", GL_VERTEX_SHADER);
shaders["terrain"].add("shaders/terrain.fs", GL_FRAGMENT_SHADER);
shaders["terrain"].link();
shaders["terrain"].setUniformLocation("vMVP");
} // ----- end of method Context::setup -----
Shader::Shader(const char* fragmentShaderFile, const char* vertexShaderFile){
_id = glCreateProgram(); //Opprett shaderprogram i OpenGL, lagre indeks for fremtidig bruk
Window::ExitOnGLError("create the shader program");
Shader fragmentShader = Shader(fragmentShaderFile, GL_FRAGMENT_SHADER);
Window::ExitOnGLError("create the fragment shader");
Shader vertexShader = Shader(vertexShaderFile, GL_VERTEX_SHADER);
Window::ExitOnGLError("create the vertex shader");
fragmentShader.Attach(_id); //Fest fragment shader til hovedprogrammet
Window::ExitOnGLError("attach the fragment shader");
vertexShader.Attach(_id); //Fest vertex shader til hovedprogrammet
Window::ExitOnGLError("attach the vertex shader");
}
//
// Initialize
//
void Ex04opengl::initializeGL()
{
if (init) return;
init = true;
// Load shaders
Shader(1,"",":/ex04a.frag");
Shader(2,":/ex04b.vert",":/ex04b.frag");
Shader(3,":/ex04c.vert",":/ex04c.frag");
Shader(4,":/ex04d.vert",":/ex04d.frag");
Shader(5,":/ex04e.vert",":/ex04e.frag");
// Cube
Cube* cube = new Cube();
cube->texture(":/crate.png");
objects.push_back(cube);
// Teapot
Teapot* pot = new Teapot(8);
pot->scale(0.5);
pot->texture(":/pi.png");
objects.push_back(pot);
// Cruiser
WaveOBJ* cruiser=0;
try
{
cruiser = new WaveOBJ("cruiser.obj",":/");
}
catch (QString err)
{
Fatal("Error loading object\n"+err);
}
if (cruiser)
{
cruiser->color(1,1,0);
objects.push_back(cruiser);
}
// Set initial object
obj = objects[0];
// Start 100 fps timer connected to updateGL
move = true;
timer.setInterval(10);
connect(&timer,SIGNAL(timeout()),this,SLOT(updateGL()));
timer.start();
time.start();
}
Shader Shader::FromFile(const char * shaderPath, ShaderType type){
std::ifstream is (shaderPath,std::ios::in);
std::stringstream buffer;
buffer<<is.rdbuf();
std::string shaderstring=buffer.str();
return Shader(shaderstring.c_str(),type);
}
Shader Shader::New( const std::string& vertexShader,
const std::string& fragmentShader,
ShaderHints hints )
{
Internal::ShaderPtr renderer = Internal::Shader::New( vertexShader, fragmentShader, hints );
return Shader( renderer.Get() );
}
//----------------------------------------------------------------------
// ● シェーダの作成
//----------------------------------------------------------------------
LNRESULT GraphicsDevice::createShader( IShader** obj_, const void* data_, lnU32 size_, lnSharingKey key_ )
{
#if 0
LNRESULT lr;
*obj_ = NULL;
// キャッシュを検索
*obj_ = ShaderCache::findCacheAddRef( key_ );
if ( *obj_ )
{
return LN_OK;
}
// 新しく作る
Shader* shader = LN_NEW Shader( this );
LN_CALL_R( shader->initialize( static_cast< const char* >( data_ ) ) );
// キャッシュ管理クラスに追加
ShaderCache::registerCachedObject( key_, shader );
mShaderList.push_back( shader );
*obj_ = shader;
return LN_OK;
#endif
LN_PRINT_NOT_IMPL_FUNCTION;
return LN_OK;
}
//
// Initialize
//
void Ex07opengl::initializeGL()
{
if (init) return;
init = true;
// Texture
QPixmap crate(":/crate.png");
tex = bindTexture(crate,GL_TEXTURE_2D);
// Load shaders
Shader(shader,":/ex07.vert",":/ex07.frag");
// Start 100 fps timer connected to updateGL
move = true;
timer.setInterval(10);
connect(&timer,SIGNAL(timeout()),this,SLOT(updateGL()));
timer.start();
time.start();
// Cube vertex buffer object
// Copy data to vertex buffer object
cube_buffer.create();
cube_buffer.bind();
cube_buffer.setUsagePattern(QGLBuffer::StaticDraw);
cube_buffer.allocate(sizeof(cube_data));
cube_buffer.write(0,cube_data,sizeof(cube_data));
// Unbind this buffer
cube_buffer.release();
}
GLint init()
{
glfwInit();
/* Create a GLFW window */
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR,3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR,3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
window = glfwCreateWindow(screenWidth, screenHeight, "Learning OpenGL", nullptr, nullptr);
if (window == nullptr)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
/* Initialize GLEW */
glewExperimental = GL_TRUE;
if (glewInit() != GLEW_OK)
{
std::cout << "Failed to initialize GLEW" << std::endl;
return -1;
}
glViewport(0, 0, 800, 600);
/* Input */
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glEnable(GL_DEPTH_TEST);
cubeShader = Shader("cube.vert", "cube.frag");
lightShader = Shader("light.vert", "light.frag");
viewCamera = Camera( glm::vec3(0.0f, 0.0f, 3.0f),
glm::vec3(0.0f, 0.0f,-1.0f),
glm::vec3(0.0f, 1.0f, 0.0f),
5.0f );
return 0;
}
void Program::setupGLSL(){
//* configuracoes de buffer
//Define vertices que serao desenhados
GLfloat vertices[] = {
// Posicoes // Cores
0.5f, 0.5f, 1.0f, 0.0f, 0.0f, //vermelho
0.5f, -0.5f, 0.0f, 1.0f, 0.0f, //verde
-0.5f, -0.5f, 0.0f, 0.0f, 1.0f, //azul
-0.5, 0.5, 1.0f, 1.0f, 1.0f //branco
};
GLuint indices[] = {
0, 1, 3,
1, 2, 3
};
//Cria um objeto de array de vertices
glGenVertexArrays(1,&VAO);
GLuint VBO, EBO;
//Cria um objeto de buffer de vértices
glGenBuffers(1, &VBO);
//Liga o array de objetos de vertice
glBindVertexArray(VAO);
//Copia o buffer para o objeto de buffer a ser usado pelo OpenGL
glBindBuffer(GL_ARRAY_BUFFER, VBO);
//Copia os dados de vertices definidos para o objeto de buffer, e configura como será desenhado
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glGenBuffers(1, &EBO);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
//Envia informacoes ao OpenGL de como será os atributos dos vertices passados ao shader
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
5 * sizeof(GLfloat), (GLvoid*)0);
//Ativa os atributos configuradoz
glEnableVertexAttribArray(0);
//Similar ao acima, mas relacionado a cor
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE,
5 * sizeof(GLfloat), (GLvoid*)(2 * sizeof(GLfloat)));
glEnableVertexAttribArray(1);
//Desliga array de objetos de vertice
glBindVertexArray(0);
//
const char* vertexPath = "/Users/thiagoTMB/Documents/Repositories/Tutorials/OpenGLTutorial/OpenGLTutorial/OpenGLTutorial/vertex.glsl";
const char* fragmentPath = "/Users/thiagoTMB/Documents/Repositories/Tutorials/OpenGLTutorial/OpenGLTutorial/OpenGLTutorial/fragment.glsl";
newShader = Shader();
newShader.initShader(vertexPath, fragmentPath);
}
Emitter::Emitter(const Json::Value& emitter_json) {
glm::vec3 pos;
pos.x = emitter_json["position"]["x"].asFloat();
pos.y = emitter_json["position"]["y"].asFloat();
pos.z = emitter_json["position"]["z"].asFloat();
initialize(Shader("shaders/particle.vs", "shaders/particle.fs"), pos);
}
void GLProgram::addShader(std::string fileName, GLenum type)
{
shaders.push_back(Shader(type));
if (!shaders.back().compile(fileName))
shaders.pop_back();
else
glAttachShader(ID,shaders.back().getID());
}
static Shader shaderFromFile(const std::string &file, GLenum type) {
std::ifstream f;
f.open(file.c_str(), std::ios::in | std::ios::binary);
if (!f.is_open())
errorHandle(std::string("Failed to open ") + file);
std::stringstream buf;
buf << f.rdbuf();
return Shader(buf.str(), type);
}
template<UnsignedInt dimensions> Vector<dimensions>::Vector(): transformationProjectionMatrixUniform(0), colorUniform(1) {
Corrade::Utility::Resource rs("MagnumShaders");
#ifndef MAGNUM_TARGET_GLES
Version v = Context::current()->supportedVersion({Version::GL320, Version::GL210});
#else
Version v = Context::current()->supportedVersion({Version::GLES300, Version::GLES200});
#endif
AbstractShaderProgram::attachShader(Shader(v, Shader::Type::Vertex)
.addSource(rs.get("compatibility.glsl"))
.addSource(rs.get(vertexShaderName<dimensions>())));
AbstractShaderProgram::attachShader(Shader(v, Shader::Type::Fragment)
.addSource(rs.get("compatibility.glsl"))
.addSource(rs.get("Vector.frag")));
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>() ||
Context::current()->version() == Version::GL210)
#else
if(!Context::current()->isVersionSupported(Version::GLES300))
#endif
{
AbstractShaderProgram::bindAttributeLocation(AbstractVector<dimensions>::Position::Location, "position");
AbstractShaderProgram::bindAttributeLocation(AbstractVector<dimensions>::TextureCoordinates::Location, "textureCoordinates");
}
AbstractShaderProgram::link();
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_uniform_location>())
#endif
{
transformationProjectionMatrixUniform = AbstractShaderProgram::uniformLocation("transformationProjectionMatrix");
colorUniform = AbstractShaderProgram::uniformLocation("color");
}
#ifndef MAGNUM_TARGET_GLES
if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::shading_language_420pack>())
AbstractShaderProgram::setUniform(AbstractShaderProgram::uniformLocation("vectorTexture"), AbstractVector<dimensions>::VectorTextureLayer);
#endif
}
Shader loadShaderFile(const QString & shaderPath) {
if (shaderPath.endsWith(".xml", Qt::CaseInsensitive)) {
return shadertoy::loadShaderXml(shaderPath);
} else if (shaderPath.endsWith(".json", Qt::CaseInsensitive)) {
return shadertoy::loadShaderJson(shaderPath);
} else {
qWarning() << "Don't know how to parse path " << shaderPath;
}
return Shader();
}
//Initialize the game
GAME_DLL GAME_INIT(Game_Init)
{
GLenum error = glGetError();
SetTexture(&test.MeshTexture, "resources\\textures\\tile2.png");
error = glGetError();
//the mesh i will use
CreateSprite(&test, vec2(50, 50), vec3(0, 0, 0), &test.MeshTexture, &Color(1, 1, 1, 1), 1);
error = glGetError();
//Use older shaders with old GLSL
#if GLSL_VERSION == ANCIENT_VERSION
shader = Shader("resources\\shaders\\vertex shader 120.vert", "resources\\shaders\\fragment shader 120.frag");
error = glGetError();
#elif GLSL_VERSION == MODERN_VERSION //Use modern shaders with modern GLSL
shader = Shader("resources\\shaders\\vertex shader.vert", "resources\\shaders\\fragment shader.frag");
#endif
//CalculatePerspectiveProjection(&Cam, 80.0f, screenWidth, screenHeight, -0.1f, 500.0f);
CalculateOrthoProjectionMatrix(&Cam, screenWidth, screenHeight, -0.1f, 500.0f);
}
SpotLight::SpotLight(const Vector3f& color, float intensity, const Attenuation& attenuation, float viewAngle,
int shadowMapSizeAsPowerOf2, float shadowSoftness, float lightBleedReductionAmount, float minVariance) :
PointLight(color, intensity, attenuation, Shader("forward-spot")),
m_cutoff(cos(viewAngle/2))
{
if(shadowMapSizeAsPowerOf2 != 0)
{
SetShadowInfo(ShadowInfo(Matrix4f().InitPerspective(viewAngle, 1.0, 0.1, GetRange()), false, shadowMapSizeAsPowerOf2,
shadowSoftness, lightBleedReductionAmount, minVariance));
}
}
Drawable::Ptr StockResources::UnitAxes() {
GeometryResource::Ptr geom = GetOrMakeGeometry("geom:sv_unit_axes",
UnitAxesData, resources_);
MaterialResource::Ptr material =
resources_->GetMaterial("mat:sv_unit_axes");
if (!material) {
material = resources_->MakeMaterial(Shader(kPerVertexColorLighting));
}
return Drawable::Create(geom, material);
}
void ShaderResource::release() {
if (m_loaded) {
glDeleteShader(m_shader.getVertexShader());
glDeleteShader(m_shader.getFragmentShader());
glDeleteProgram(m_shader.getProgram());
m_shader = Shader();
m_loaded = false;
}
}
void Shaderman::init()
{
std::vector<std::string> attr;
// block shader
attr.push_back("in_vertex");
attr.push_back("in_normal");
attr.push_back("in_color");
shaders[Shaderman::BLOCK_SHADER] = Shader("shaders/block.glsl", attr);
}
DirectionalLight::DirectionalLight(const Vector3f& color, float intensity, int shadowMapSizeAsPowerOf2,
float shadowArea, float shadowSoftness, float lightBleedReductionAmount, float minVariance) :
BaseLight(color, intensity, Shader("forward-directional")),
m_halfShadowArea(shadowArea / 2.0f)
{
if(shadowMapSizeAsPowerOf2 != 0)
{
SetShadowInfo(ShadowInfo(Matrix4f().InitOrthographic(-m_halfShadowArea, m_halfShadowArea, -m_halfShadowArea,
m_halfShadowArea, -m_halfShadowArea, m_halfShadowArea),
true, shadowMapSizeAsPowerOf2, shadowSoftness, lightBleedReductionAmount, minVariance));
}
}
Shader* Shader::get(const std::string& name) {
if (Shaders.count(name) > 0) {
return &Shaders[name];
}
initDefaultPrograms();
if ((defaultVertexPrograms.count(name) > 0) &&
(defaultFragmentPrograms.count(name) > 0)) {
Shaders[name] = Shader(name);
return &Shaders[name];
}
fprintf(stderr, "No shader for %s\n", name.c_str());
return NULL;
}
void Renderer::initialize()
{
glewExperimental = GL_TRUE;
if (glewInit() != GLEW_OK) {
std::cerr << "Failed to initialize GLEW." << std::endl;
exit(-1);
}
glEnable(GL_DEPTH_TEST);
_shader = Shader(_vertexPath.c_str(), _geometryPath.c_str(), _fragmentPath.c_str());
_depthShader = std::make_shared<Shader>(_shadowVertexPath.c_str(),
_shadowGeometryPath.c_str(), _shadowFragmentPath.c_str());
glGenFramebuffers(1, &_depthMapFBO);
}
void Shaderman::init()
{
// load and initialize all shaders
std::vector<std::string> linkstage;
// fullscreen shader
shaders[FULLSCREEN_SHADER] = Shader("shaders/screenspace.glsl", linkstage);
// standard 2d shader
shaders[STANDARD_SHADER] = Shader("shaders/standard.glsl", linkstage);
linkstage.push_back( "in_vertex" );
linkstage.push_back( "in_texture" );
linkstage.push_back( "in_color" );
// extended 2d array shader
shaders[TILESET_SHADER] = Shader("shaders/tileset.glsl", linkstage);
shaders[PLAYER_SHADER] = Shader("shaders/player.glsl", linkstage);
// return state to fixed pipeline
Shader::unbind();
}
static void init_graphics(int argc, char** argv) {
glutInit(&argc,argv);
glutCreateWindow("GLEW Test");
Shader minimal = Shader("shaders/minimal.vert", "shaders/minimal.frag");
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
std::cerr << "Error: " << glewGetErrorString(err) << std::endl;
}
std::cout << "Status: Using GLEW " << glewGetString(GLEW_VERSION) << std::endl;
std::cout << "Status: Using GL " << glGetString(GL_VERSION) << std::endl;
}
Graphics::Shader Graphics::createProgram(const std::list<GLuint>& shaders)
{
GLuint program = glCreateProgram();
for (auto& shader: shaders)
glAttachShader(program, shader);
glLinkProgram(program);
GLint linked;
glGetProgramiv(program, GL_LINK_STATUS, &linked);
if (!linked)
{// Message handled by debug layer
GLint length;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &length);
std::vector<GLchar> message(length + 1);
glGetProgramInfoLog(program, length, nullptr, message.data());
fprintf(stderr, "%s\n", message.data());
glDeleteProgram(program);
return std::move(Shader());
}
printf("Created program %u\n", program);
return std::move(Shader(program));
}
