int main()
{
glfwInit();
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);
GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "ColorTest", nullptr, nullptr);
glfwMakeContextCurrent(window);
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glewExperimental = GL_TRUE;
glewInit();
glViewport(0, 0, WIDTH, HEIGHT);
glEnable(GL_DEPTH_TEST);
//Build and compile shader program
Shader lightingShader("../res/texture_map_shaders/texture_map_specular.vs", "../res/texture_map_shaders/texture_map_specular.frag");
Shader lampShader("../res/lamp.vs", "../res/lamp.frag");
// Set up vertex data (and buffer(s)) and attribute pointers
GLfloat vertices[] = {
// Positions // Normals // Texture Coords
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f
};
GLuint VBO, containerVAO;
glGenVertexArrays(1, &containerVAO);
glGenBuffers(1, &VBO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glBindVertexArray(containerVAO);
// Position attribute
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
// Normal attribute
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(1);
//Texture coordinates
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(6 * sizeof(GLfloat)));
glEnableVertexAttribArray(2);
glBindVertexArray(0);
// Then, we set the light's VAO (VBO stays the same. After all, the vertices are the same for the light object (also a 3D cube))
GLuint lightVAO;
glGenVertexArrays(1, &lightVAO);
glBindVertexArray(lightVAO);
// We only need to bind to the VBO (to link it with glVertexAttribPointer), no need to fill it; the VBO's data already contains all we need.
glBindBuffer(GL_ARRAY_BUFFER, VBO);
// Set the vertex attributes (only position data for the lamp))
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)0); // Note that we skip over the normal vectors
glEnableVertexAttribArray(0);
glBindVertexArray(0);
//load textures
GLuint diffuseMap, specularMap, emissionMap;
glGenTextures(1, &diffuseMap);
glGenTextures(1, &specularMap);
glGenTextures(1, &emissionMap);
int width, height;
unsigned char* image;
image = SOIL_load_image("../res/images/container2.png", &width, &height, 0, SOIL_LOAD_RGB);
glBindTexture(GL_TEXTURE_2D, diffuseMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
glGenerateMipmap(GL_TEXTURE_2D);
SOIL_free_image_data(image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
image = SOIL_load_image("../res/images/lighting_maps_specular_color.png", &width, &height, 0, SOIL_LOAD_RGB);
glBindTexture(GL_TEXTURE_2D, specularMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
image = SOIL_load_image("../res/images/matrix.jpg", &width, &height, 0, SOIL_LOAD_RGB);
glBindTexture(GL_TEXTURE_2D, emissionMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
SOIL_free_image_data(image);
glBindTexture(GL_TEXTURE_2D, 0);
lightingShader.Use();
GLint materialDiffuseLoc = glGetUniformLocation(lightingShader.Program, "material.diffuse");
GLint materialSpecularLoc = glGetUniformLocation(lightingShader.Program, "material.specular");
GLint materialEmissionLoc = glGetUniformLocation(lightingShader.Program, "material.emission");
glUniform1i(materialDiffuseLoc, 0);
glUniform1i(materialSpecularLoc, 1);
glUniform1i(materialEmissionLoc, 2);
// Game loop
while (!glfwWindowShouldClose(window))
{
// Calculate deltatime of current frame
GLfloat currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
// Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
glfwPollEvents();
do_movement();
// Clear the colorbuffer
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
lightPos.x = 1.0f + sin(glfwGetTime()) * 2.0f;
lightPos.y = sin(glfwGetTime() / 2.0f) * 1.0f;
// Use cooresponding shader when setting uniforms/drawing objects
lightingShader.Use();
GLint objectColorLoc = glGetUniformLocation(lightingShader.Program, "objectColor");
//GLint lightColorLoc = glGetUniformLocation(lightingShader.Program, "lightColor");
GLint lightPosLoc = glGetUniformLocation(lightingShader.Program, "lightPos");
GLint viewPosLoc = glGetUniformLocation(lightingShader.Program, "viewPos");
glUniform3f(objectColorLoc, 1.0f, 0.5f, 0.31f);
//glUniform3f(lightColorLoc, 1.0f, 1.0f, 1.0f);
glUniform3f(lightPosLoc, lightPos.x, lightPos.y, lightPos.z);
//printf("x:%f, y:%f, z:%f/n", lightPos.x, lightPos.y, lightPos.z);
glUniform3f(viewPosLoc, camera.Position.x, camera.Position.y, camera.Position.z);
GLint materialShininessLoc = glGetUniformLocation(lightingShader.Program, "material.shininess");
glUniform1f(materialShininessLoc, 32.0f);
glm::vec3 lighting;
lighting.x = sin(glfwGetTime() * 2.0f);
lighting.y = sin(glfwGetTime() * 1.0f);
lighting.z = sin(glfwGetTime() * 1.4f);
glm::vec3 ambientColor = lighting * glm::vec3(0.2f);
glm::vec3 diffuseColor = lighting * glm::vec3(0.6f);
GLint lightAmbientLoc = glGetUniformLocation(lightingShader.Program, "light.ambient");
GLint lightDiffuseLoc = glGetUniformLocation(lightingShader.Program, "light.diffuse");
GLint lightSpecularLoc = glGetUniformLocation(lightingShader.Program, "light.specular");
/*glUniform3f(lightAmbientLoc, ambientColor.x, ambientColor.y, ambientColor.z);
glUniform3f(lightDiffuseLoc, diffuseColor.x, diffuseColor.y, diffuseColor.z);*/
glUniform3f(lightAmbientLoc, 0.5f, 0.5f, 0.5f);
glUniform3f(lightDiffuseLoc, 0.5f, 0.5f, 0.5f);
glUniform3f(lightSpecularLoc, 1.0f, 1.0f, 1.0f);
// Create camera transformations
glm::mat4 view;
view = camera.GetViewMatrix();
glm::mat4 projection = glm::perspective(camera.Zoom, (GLfloat)WIDTH / (GLfloat)HEIGHT, 0.1f, 100.0f);
// Get the uniform locations
GLint modelLoc = glGetUniformLocation(lightingShader.Program, "model");
GLint viewLoc = glGetUniformLocation(lightingShader.Program, "view");
GLint projLoc = glGetUniformLocation(lightingShader.Program, "projection");
// Pass the matrices to the shader
glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(projection));
//Bind diffuse map
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, diffuseMap);
//Bind specualr map
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, specularMap);
//bind emission map
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, emissionMap);
// Draw the container (using container's vertex attributes)
glBindVertexArray(containerVAO);
glm::mat4 model;
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
// Also draw the lamp object, again binding the appropriate shader
lampShader.Use();
// Get location objects for the matrices on the lamp shader (these could be different on a different shader)
modelLoc = glGetUniformLocation(lampShader.Program, "model");
viewLoc = glGetUniformLocation(lampShader.Program, "view");
projLoc = glGetUniformLocation(lampShader.Program, "projection");
// Set matrices
glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(projection));
model = glm::mat4();
model = glm::translate(model, lightPos);
model = glm::scale(model, glm::vec3(0.2f)); // Make it a smaller cube
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
// Draw the light object (using light's vertex attributes)
glBindVertexArray(lightVAO);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
// Swap the screen buffers
glfwSwapBuffers(window);
}
// Terminate GLFW, clearing any resources allocated by GLFW.
glfwTerminate();
return 0;
}
int main(int argc, const char * argv[]) {
CommonSettings Settings;
GLFWwindow *window = Settings.CreateWindow();
if (nullptr == window) {
std::cout << "Create window failed." << std::endl;
glfwTerminate();
return -1;
}
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
GLfloat vertices[] = {
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,
};
GLuint VAO, VBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
GLuint lightVAO;
glGenVertexArrays(1, &lightVAO);
glBindVertexArray(lightVAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
#ifdef __APPLE__
string path = "/Basic Lighting/2/";
#else
string path = "\\Basic Lighting\\2\\";
#endif
ShaderReader shader(Settings.CCExercisesPath(path + "EX_L_BL_2.vs").c_str(), Settings.CCExercisesPath(path + "EX_L_BL_2.fs").c_str());
ShaderReader lightShader(Settings.CCExercisesPath(path + "EX_L_BL_2_light.vs").c_str(), Settings.CCExercisesPath(path + "EX_L_BL_2_light.fs").c_str());
glm::mat4 modelMat;
glm::mat4 viewMat;
glm::mat4 projMat;
GLint width, height;
glfwGetFramebufferSize(window, &width, &height);
glm::vec3 lightPos(1.2f, 1.0f, 2.0f);
glm::vec3 lightColor(1.0f, 1.0f, 1.0f);
glm::vec3 objectColor(1.0f, 0.5f, 0.31f);
shader.Use();
GLint modelLoc = glGetUniformLocation(shader.GetProgram(), "modelMat");
GLint viewLoc = glGetUniformLocation(shader.GetProgram(), "viewMat");
GLint projLoc = glGetUniformLocation(shader.GetProgram(), "projMat");
GLint lightColorLoc = glGetUniformLocation(shader.GetProgram(), "lightColor");
GLint objectColorLoc = glGetUniformLocation(shader.GetProgram(), "objectColor");
GLint lightPosLoc = glGetUniformLocation(shader.GetProgram(), "lightPos");
GLint viewPosLoc = glGetUniformLocation(shader.GetProgram(), "viewPos");
lightShader.Use();
GLint lightModelLoc = glGetUniformLocation(lightShader.GetProgram(), "modelMat");
GLint lightViewLoc = glGetUniformLocation(lightShader.GetProgram(), "viewMat");
GLint lightProjLoc = glGetUniformLocation(lightShader.GetProgram(), "projMat");
GLint lightLightColorLoc = glGetUniformLocation(lightShader.GetProgram(), "lightColor");
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
do_movement();
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
GLfloat currentTime = glfwGetTime();
deltaTime = currentTime - lastFrame;
lastFrame = currentTime;
viewMat = cam.getViewMatrix();
projMat = glm::perspective(cam.getZoom(), (GLfloat)width / height, 0.1f, 100.0f);
shader.Use();
modelMat = glm::mat4();
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(modelMat));
glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(viewMat));
glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(projMat));
glUniform3f(lightColorLoc, lightColor.x, lightColor.y, lightColor.z);
glUniform3f(objectColorLoc, objectColor.x, objectColor.y, objectColor.z);
glUniform3f(lightPosLoc, lightPos.x, lightPos.y, lightPos.z);
glUniform3f(viewPosLoc, cam.getPosition().x, cam.getPosition().y, cam.getPosition().z);
glBindVertexArray(VAO);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
lightShader.Use();
modelMat = glm::mat4();
modelMat = glm::translate(modelMat, glm::vec3(lightPos.x, lightPos.y, lightPos.z));
modelMat = glm::scale(modelMat, glm::vec3(0.2f));
glUniformMatrix4fv(lightModelLoc, 1, GL_FALSE, glm::value_ptr(modelMat));
glUniformMatrix4fv(lightViewLoc, 1, GL_FALSE, glm::value_ptr(viewMat));
glUniformMatrix4fv(lightProjLoc, 1, GL_FALSE, glm::value_ptr(projMat));
glUniform3f(lightLightColorLoc, lightColor.x, lightColor.y, lightColor.z);
glBindVertexArray(lightVAO);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
glfwSwapBuffers(window);
}
glfwTerminate();
return 0;
}
int main()
{
// Init GLFW
glfwInit();
// Set all the required options for GLFW
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
// Create a GLFWwindow object that we can use for GLFW's functions
GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "Fluid simulation", nullptr, nullptr);
glfwMakeContextCurrent(window);
// Set the required callback functions
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
// GLFW Options
// glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
// Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
glewExperimental = GL_TRUE;
// Initialize GLEW to setup the OpenGL Function pointers
glewInit();
// Define the viewport dimensions
glViewport(0, 0, WIDTH, HEIGHT);
initialize();
Shader vizualizeProgram("defaultVS.vs", "visualize.fs");
Shader advect("defaultVS.vs", "advect.fs");
Shader computeDivergence("defaultVS.vs", "computeDivergence.fs");
Shader makeGravity("defaultVS.vs", "gravityField.fs");
Shader jacobi("defaultVS.vs", "jacobi.fs");
Shader subtractGradient("defaultVS.vs", "subtractGradient.fs");
// Game loop
while (!glfwWindowShouldClose(window))
{
// Calculate deltatime of current frame
GLfloat currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
// Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
glfwPollEvents();
update(advect, computeDivergence, makeGravity, jacobi, subtractGradient);
render(vizualizeProgram);
// Swap the screen buffers
glfwSwapBuffers(window);
std::this_thread::sleep_for(std::chrono::milliseconds(10));
lastFrame = currentFrame;
}
// Terminate GLFW, clearing any resources allocated by GLFW.
glfwTerminate();
return 0;
}
int main() {
glfwInit();
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);
GLFWwindow* window = glfwCreateWindow(800, 600, "LearnOpengL", nullptr, nullptr);
if (window == nullptr) {
std::cout << "Window not created\n";
glfwTerminate();
}
else {
std::cout << "The Window is created\n";
glfwMakeContextCurrent(window);
}
glfwMakeContextCurrent(window);
glfwSetKeyCallback(window, key_callback);
glewExperimental = GL_TRUE;
if (glewInit() != GLEW_OK) {
std:: cout << "Failed to Initialize GLEW. Lol \n";
}
glViewport(0,0,800,600);
//Compile Shaders
GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
glCompileShader(vertexShader);
GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
glCompileShader(fragmentShader);
//Check for Compile Time errors while compiling shaders
GLint success;
GLchar infoLog[512];
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
if (!success) {
glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);
std::cout << "Compilation of Vertex Shader Failed\n";
}
glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success);
if (!success) {
glGetShaderInfoLog(fragmentShader,512, NULL, infoLog);
std::cout << "Compilation of Fragment Shader Failed\n";
}
//Link Shaders
GLuint shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
//Check for Linking Errors of Shaders
glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
if (!success) {
glGetProgramInfoLog(shaderProgram,512, NULL, infoLog);
std::cout << "Linkin of Shaders Failed\n";
}
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
GLfloat vertices[] = {
+0.0f, +0.0f, +0.0f,
-1.0f, +1.0f, +0.0f,
+1.0f, +1.0f, +0.0f,
+0.0f, +0.0f, +0.0f,
-1.0f, -1.0f, +0.0f,
+1.0f, -1.0f, +0.0f
};
GLuint VBO;
GLuint VAO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GL_FLOAT), (GLvoid*)0);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
while(!glfwWindowShouldClose(window)) {
glfwPollEvents();
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(shaderProgram);
glBindVertexArray(VAO);
glDrawArrays(GL_TRIANGLES, 0, 6);
glBindVertexArray(0);
glfwSwapBuffers(window);
}
glDeleteVertexArrays(1, &VAO);
glDeleteBuffers(1, &VBO);
glfwTerminate();
return 0;
}
int main(int argc, char** argv)
{
GLFWwindow* window;
int ch, iter;
double dt;
double last_update_time;
int frame;
float f;
GLint uloc_modelview;
GLint uloc_project;
char* vertex_shader_path = NULL;
char* fragment_shader_path = NULL;
char* vertex_shader_src = NULL;
char* fragment_shader_src = NULL;
GLuint shader_program;
while ((ch = getopt(argc, argv, "f:v:h")) != -1)
{
switch (ch)
{
case 'f':
fragment_shader_path = optarg;
break;
case 'v':
vertex_shader_path = optarg;
break;
case 'h':
usage();
exit(EXIT_SUCCESS);
default:
usage();
exit(EXIT_FAILURE);
}
}
if (fragment_shader_path)
{
vertex_shader_src = read_file_content(fragment_shader_path);
if (!fragment_shader_src)
{
fprintf(stderr,
"ERROR: unable to load fragment shader from '%s'\n",
fragment_shader_path);
exit(EXIT_FAILURE);
}
}
if (vertex_shader_path)
{
vertex_shader_src = read_file_content(vertex_shader_path);
if (!vertex_shader_src)
{
fprintf(stderr,
"ERROR: unable to load vertex shader from '%s'\n",
fragment_shader_path);
exit(EXIT_FAILURE);
}
}
if (!glfwInit())
{
fprintf(stderr, "ERROR: Unable to initialize GLFW\n");
usage();
free(vertex_shader_src);
free(fragment_shader_src);
exit(EXIT_FAILURE);
}
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_FALSE);
window = glfwCreateWindow(800, 600, "GLFW OpenGL3 Heightmap demo", NULL, NULL);
if (! window )
{
fprintf(stderr, "ERROR: Unable to create the OpenGL context and associated window\n");
usage();
free(vertex_shader_src);
free(fragment_shader_src);
glfwTerminate();
exit(EXIT_FAILURE);
}
/* Register events callback */
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
if (GL_TRUE != init_opengl())
{
fprintf(stderr, "ERROR: unable to resolve OpenGL function pointers\n");
free(vertex_shader_src);
free(fragment_shader_src);
glfwTerminate();
exit(EXIT_FAILURE);
}
/* Prepare opengl resources for rendering */
shader_program = make_shader_program(vertex_shader_src , fragment_shader_src);
free(vertex_shader_src);
free(fragment_shader_src);
if (shader_program == 0u)
{
fprintf(stderr, "ERROR: during creation of the shader program\n");
usage();
glfwTerminate();
exit(EXIT_FAILURE);
}
pglUseProgram(shader_program);
uloc_project = pglGetUniformLocation(shader_program, "project");
uloc_modelview = pglGetUniformLocation(shader_program, "modelview");
/* Compute the projection matrix */
f = 1.0f / tanf(view_angle / 2.0f);
projection_matrix[0] = f / aspect_ratio;
projection_matrix[5] = f;
projection_matrix[10] = (z_far + z_near)/ (z_near - z_far);
projection_matrix[11] = -1.0f;
projection_matrix[14] = 2.0f * (z_far * z_near) / (z_near - z_far);
pglUniformMatrix4fv(uloc_project, 1, GL_FALSE, projection_matrix);
/* Set the camera position */
modelview_matrix[12] = -5.0f;
modelview_matrix[13] = -5.0f;
modelview_matrix[14] = -20.0f;
pglUniformMatrix4fv(uloc_modelview, 1, GL_FALSE, modelview_matrix);
/* Create mesh data */
init_map();
make_mesh(shader_program);
/* Create vao + vbo to store the mesh */
/* Create the vbo to store all the information for the grid and the height */
/* setup the scene ready for rendering */
glViewport(0, 0, 800, 600);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
/* main loop */
frame = 0;
iter = 0;
dt = last_update_time = glfwGetTime();
while (!glfwWindowShouldClose(window))
{
++frame;
/* render the next frame */
glClear(GL_COLOR_BUFFER_BIT);
glDrawElements(GL_LINES, 2* MAP_NUM_LINES , GL_UNSIGNED_INT, 0);
/* display and process events through callbacks */
glfwSwapBuffers(window);
glfwPollEvents();
/* Check the frame rate and update the heightmap if needed */
dt = glfwGetTime();
if ((dt - last_update_time) > 0.2)
{
/* generate the next iteration of the heightmap */
if (iter < MAX_ITER)
{
update_map(NUM_ITER_AT_A_TIME);
update_mesh();
iter += NUM_ITER_AT_A_TIME;
}
last_update_time = dt;
frame = 0;
}
}
glfwTerminate();
exit(EXIT_SUCCESS);
}
void FarmEvents()
{
glfwPollEvents();
}
int main()
{
// glfw: initialize and configure
// ------------------------------
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // uncomment this statement to fix compilation on OS X
// glfw window creation
// --------------------
GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);
if (window == NULL)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
// tell GLFW to capture our mouse
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
// glad: load all OpenGL function pointers
// ---------------------------------------
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
// configure global opengl state
// -----------------------------
glEnable(GL_DEPTH_TEST);
// build and compile shaders
// -------------------------
Shader shader("11.anti_aliasing.vs", "11.anti_aliasing.fs");
Shader screenShader("11.aa_post.vs", "11.aa_post.fs");
// set up vertex data (and buffer(s)) and configure vertex attributes
// ------------------------------------------------------------------
float cubeVertices[] = {
// positions
-0.5f, -0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
0.5f, 0.5f, -0.5f,
0.5f, 0.5f, -0.5f,
-0.5f, 0.5f, -0.5f,
-0.5f, -0.5f, -0.5f,
-0.5f, -0.5f, 0.5f,
0.5f, -0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, -0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, -0.5f,
-0.5f, -0.5f, -0.5f,
-0.5f, -0.5f, -0.5f,
-0.5f, -0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
0.5f, 0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
0.5f, -0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
-0.5f, -0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
0.5f, -0.5f, 0.5f,
0.5f, -0.5f, 0.5f,
-0.5f, -0.5f, 0.5f,
-0.5f, -0.5f, -0.5f,
-0.5f, 0.5f, -0.5f,
0.5f, 0.5f, -0.5f,
0.5f, 0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, -0.5f
};
float quadVertices[] = { // vertex attributes for a quad that fills the entire screen in Normalized Device Coordinates.
// positions // texCoords
-1.0f, 1.0f, 0.0f, 1.0f,
-1.0f, -1.0f, 0.0f, 0.0f,
1.0f, -1.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f,
1.0f, -1.0f, 1.0f, 0.0f,
1.0f, 1.0f, 1.0f, 1.0f
};
// setup cube VAO
unsigned int cubeVAO, cubeVBO;
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindVertexArray(cubeVAO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
// setup screen VAO
unsigned int quadVAO, quadVBO;
glGenVertexArrays(1, &quadVAO);
glGenBuffers(1, &quadVBO);
glBindVertexArray(quadVAO);
glBindBuffer(GL_ARRAY_BUFFER, quadVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(quadVertices), &quadVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void*)(2 * sizeof(float)));
// configure MSAA framebuffer
// --------------------------
unsigned int framebuffer;
glGenFramebuffers(1, &framebuffer);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
// create a multisampled color attachment texture
unsigned int textureColorBufferMultiSampled;
glGenTextures(1, &textureColorBufferMultiSampled);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, textureColorBufferMultiSampled);
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, 4, GL_RGB, SCR_WIDTH, SCR_HEIGHT, GL_TRUE);
glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, textureColorBufferMultiSampled, 0);
// create a (also multisampled) renderbuffer object for depth and stencil attachments
unsigned int rbo;
glGenRenderbuffers(1, &rbo);
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, 4, GL_DEPTH24_STENCIL8, SCR_WIDTH, SCR_HEIGHT);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rbo);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
cout << "ERROR::FRAMEBUFFER:: Framebuffer is not complete!" << endl;
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// configure second post-processing framebuffer
unsigned int intermediateFBO;
glGenFramebuffers(1, &intermediateFBO);
glBindFramebuffer(GL_FRAMEBUFFER, intermediateFBO);
// create a color attachment texture
unsigned int screenTexture;
glGenTextures(1, &screenTexture);
glBindTexture(GL_TEXTURE_2D, screenTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, SCR_WIDTH, SCR_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, screenTexture, 0); // we only need a color buffer
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
cout << "ERROR::FRAMEBUFFER:: Intermediate framebuffer is not complete!" << endl;
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// shader configuration
// --------------------
shader.use();
screenShader.setInt("screenTexture", 0);
// render loop
// -----------
while (!glfwWindowShouldClose(window))
{
// per-frame time logic
// --------------------
float currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
// input
// -----
processInput(window);
// render
// ------
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// 1. draw scene as normal in multisampled buffers
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
// set transformation matrices
shader.use();
glm::mat4 projection = glm::perspective(camera.Zoom, (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 1000.0f);
shader.setMat4("projection", projection);
shader.setMat4("view", camera.GetViewMatrix());
shader.setMat4("model", glm::mat4());
glBindVertexArray(cubeVAO);
glDrawArrays(GL_TRIANGLES, 0, 36);
// 2. now blit multisampled buffer(s) to normal colorbuffer of intermediate FBO. Image is stored in screenTexture
glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, intermediateFBO);
glBlitFramebuffer(0, 0, SCR_WIDTH, SCR_HEIGHT, 0, 0, SCR_WIDTH, SCR_HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
// 3. now render quad with scene's visuals as its texture image
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
// draw Screen quad
screenShader.use();
glBindVertexArray(quadVAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, screenTexture); // use the now resolved color attachment as the quad's texture
glDrawArrays(GL_TRIANGLES, 0, 6);
// glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
// -------------------------------------------------------------------------------
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}
int main(void)
{
/* Platform */
static GLFWwindow *win;
int width = 0, height = 0;
struct nk_context *ctx;
struct nk_color background;
/* GLFW */
glfwSetErrorCallback(error_callback);
if (!glfwInit()) {
fprintf(stdout, "[GFLW] failed to init!\n");
exit(1);
}
win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
glfwMakeContextCurrent(win);
glfwGetWindowSize(win, &width, &height);
/* GUI */
ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS);
/* Load Fonts: if none of these are loaded a default font will be used */
/* Load Cursor: if you uncomment cursor loading please hide the cursor */
{struct nk_font_atlas *atlas;
nk_glfw3_font_stash_begin(&atlas);
/*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/
/*struct nk_font *roboto = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Roboto-Regular.ttf", 14, 0);*/
/*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
/*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyClean.ttf", 12, 0);*/
/*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../../extra_font/ProggyTiny.ttf", 10, 0);*/
/*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../../extra_font/Cousine-Regular.ttf", 13, 0);*/
nk_glfw3_font_stash_end();
/*nk_style_load_all_cursors(ctx, atlas->cursors);*/
/*nk_style_set_font(ctx, &droid->handle);*/}
/* style.c */
/*set_style(ctx, THEME_WHITE);*/
/*set_style(ctx, THEME_RED);*/
/*set_style(ctx, THEME_BLUE);*/
/*set_style(ctx, THEME_DARK);*/
background = nk_rgb(28,48,62);
while (!glfwWindowShouldClose(win))
{
/* Input */
glfwPollEvents();
nk_glfw3_new_frame();
/* GUI */
if (nk_begin(ctx, "Demo", nk_rect(50, 50, 230, 250),
NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
{
enum {EASY, HARD};
static int op = EASY;
static int property = 20;
nk_layout_row_static(ctx, 30, 80, 1);
if (nk_button_label(ctx, "button"))
fprintf(stdout, "button pressed\n");
nk_layout_row_dynamic(ctx, 30, 2);
if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;
nk_layout_row_dynamic(ctx, 25, 1);
nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);
nk_layout_row_dynamic(ctx, 20, 1);
nk_label(ctx, "background:", NK_TEXT_LEFT);
nk_layout_row_dynamic(ctx, 25, 1);
if (nk_combo_begin_color(ctx, background, nk_vec2(nk_widget_width(ctx),400))) {
nk_layout_row_dynamic(ctx, 120, 1);
background = nk_color_picker(ctx, background, NK_RGBA);
nk_layout_row_dynamic(ctx, 25, 1);
background.r = (nk_byte)nk_propertyi(ctx, "#R:", 0, background.r, 255, 1,1);
background.g = (nk_byte)nk_propertyi(ctx, "#G:", 0, background.g, 255, 1,1);
background.b = (nk_byte)nk_propertyi(ctx, "#B:", 0, background.b, 255, 1,1);
background.a = (nk_byte)nk_propertyi(ctx, "#A:", 0, background.a, 255, 1,1);
nk_combo_end(ctx);
}
}
nk_end(ctx);
/* -------------- EXAMPLES ---------------- */
/*calculator(ctx);*/
/*overview(ctx);*/
/*node_editor(ctx);*/
/* ----------------------------------------- */
/* Draw */
{float bg[4];
nk_color_fv(bg, background);
glfwGetWindowSize(win, &width, &height);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(bg[0], bg[1], bg[2], bg[3]);
/* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state
* with blending, scissor, face culling and depth test and defaults everything
* back into a default state. Make sure to either save and restore or
* reset your own state after drawing rendering the UI. */
nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
glfwSwapBuffers(win);}
}
nk_glfw3_shutdown();
glfwTerminate();
return 0;
}
int main() {
//Checks for memory leaks in debug mode
_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 4);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
GLFWwindow* window = glfwCreateWindow(width, height, "Hikari", nullptr, nullptr);
glfwMakeContextCurrent(window);
//Set callbacks for keyboard and mouse
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glewExperimental = GL_TRUE;
glewInit();
glGetError();
//Define the viewport dimensions
glViewport(0, 0, width, height);
//Initialize cuda->opengl context
cudaCheck(cudaGLSetGLDevice(0));
cudaGraphicsResource *resource;
//Create a texture to store ray tracing result
GLuint tex;
glActiveTexture(GL_TEXTURE0);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
cudaCheck(cudaGraphicsGLRegisterImage(&resource, tex, GL_TEXTURE_2D, cudaGraphicsMapFlagsWriteDiscard));
glBindTexture(GL_TEXTURE_2D, 0);
Shader final = Shader("fsQuad.vert", "fsQuad.frag");
FullscreenQuad fsQuad = FullscreenQuad();
float4* buffer;
cudaCheck(cudaMalloc((void**)&buffer, width * height * sizeof(float4)));
cudaCheck(cudaMemset(buffer, 0, width * height * sizeof(float4)));
//Mesh
float3 offset = make_float3(0);
float3 scale = make_float3(15);
Mesh cBox("objs/Avent", 0, scale, offset);
offset = make_float3(0, 55, 0);
scale = make_float3(100);
Mesh light("objs/plane", (int)cBox.triangles.size(), scale, offset);
cBox.triangles.insert(cBox.triangles.end(), light.triangles.begin(), light.triangles.end());
cBox.aabbs.insert(cBox.aabbs.end(), light.aabbs.begin(), light.aabbs.end());
std::cout << "Num triangles: " << cBox.triangles.size() << std::endl;
cBox.root = AABB(fminf(cBox.root.minBounds, light.root.minBounds), fmaxf(cBox.root.maxBounds, light.root.maxBounds));
BVH bvh(cBox.aabbs, cBox.triangles, cBox.root);
Camera cam(make_float3(14, 15, 80), make_int2(width, height), 45.0f, 0.04f, 80.0f);
Camera* dCam;
cudaCheck(cudaMalloc((void**)&dCam, sizeof(Camera)));
cudaCheck(cudaMemcpy(dCam, &cam, sizeof(Camera), cudaMemcpyHostToDevice));
cudaCheck(cudaGraphicsMapResources(1, &resource, 0));
cudaArray* pixels;
cudaCheck(cudaGraphicsSubResourceGetMappedArray(&pixels, resource, 0, 0));
cudaResourceDesc viewCudaArrayResourceDesc;
viewCudaArrayResourceDesc.resType = cudaResourceTypeArray;
viewCudaArrayResourceDesc.res.array.array = pixels;
cudaSurfaceObject_t viewCudaSurfaceObject;
cudaCheck(cudaCreateSurfaceObject(&viewCudaSurfaceObject, &viewCudaArrayResourceDesc));
cudaCheck(cudaGraphicsUnmapResources(1, &resource, 0));
while (!glfwWindowShouldClose(window)) {
float currentFrame = float(glfwGetTime());
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
//Check and call events
glfwPollEvents();
handleInput(window, cam);
if (cam.moved) {
frameNumber = 0;
cudaCheck(cudaMemset(buffer, 0, width * height * sizeof(float4)));
}
cam.rebuildCamera();
cudaCheck(cudaMemcpy(dCam, &cam, sizeof(Camera), cudaMemcpyHostToDevice));
frameNumber++;
if (frameNumber < 20000) {
cudaCheck(cudaGraphicsMapResources(1, &resource, 0));
std::chrono::time_point<std::chrono::system_clock> start, end;
start = std::chrono::system_clock::now();
render(cam, dCam, viewCudaSurfaceObject, buffer, bvh.dTriangles, bvh.dNodes, frameNumber, cam.moved);
end = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed = end - start;
std::cout << "Frame: " << frameNumber << " --- Elapsed time: " << elapsed.count() << "s\n";
cudaCheck(cudaGraphicsUnmapResources(1, &resource, 0));
}
cam.moved = false;
glUseProgram(final.program);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex);
glClear(GL_COLOR_BUFFER_BIT);
final.setUniformi("tRender", 0);
fsQuad.render();
//std::cout << glGetError() << std::endl;
//Swap the buffers
glfwSwapBuffers(window);
glfwSetCursorPos(window, lastX, lastY);
}
int main () {
// Initializare (se creeaza contextul)
if (!glfwInit ()) {
fprintf (stderr, "ERROR: could not start GLFW3\n");
return 1;
}
// Se creeaza fereastra
GLFWwindow* window = glfwCreateWindow (640, 480, "Workshop1", NULL, NULL);
if (!window) {
// nu am reusit sa facem fereastra, oprim totul si dam mesaj de eroare
printf ( "ERROR: could not open window with GLFW3\n");
glfwTerminate();
return 1;
}
// Atasam contextul de fereastra
glfwMakeContextCurrent (window);
// Pornit extension handler-ul
glewInit ();
// Vedem versiunile
const GLubyte* renderer = glGetString (GL_RENDERER); //renderer string
const GLubyte* version = glGetString (GL_VERSION); // version string
printf ("Renderer: %s\n", renderer);
printf ("OpenGL version supported %s\n", version);
const char * vertex_shader = LoadFileInMemory("../data/vertexShader.glsl");
const char * fragment_shader_red = LoadFileInMemory("../data/fragmentShaderRed.glsl");
const char * fragment_shader_green = LoadFileInMemory("../data/fragmentShaderGreen.glsl");
GLuint vs = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vs, 1, &vertex_shader, NULL);
glCompileShader(vs);
GLuint fs_red = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fs_red, 1, &fragment_shader_red, NULL);
glCompileShader(fs_red);
GLuint shader_programme_red = glCreateProgram();
glAttachShader(shader_programme_red, fs_red);
glAttachShader(shader_programme_red, vs);
glLinkProgram(shader_programme_red);
GLuint fs_green = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fs_red, 1, &fragment_shader_green, NULL);
glCompileShader(fs_green);
GLuint shader_programme_green = glCreateProgram();
glAttachShader(shader_programme_green, fs_green);
glAttachShader(shader_programme_green, vs);
glLinkProgram(shader_programme_green);
delete[] vertex_shader;
delete[] fragment_shader_red;
delete[] fragment_shader_green;
GLfloat vertex_buffer_red[]={
0.1, 0.0,
0.2, 0.5,
0.3, 0.0
};
GLfloat vertex_buffer_green[]={
-0.1, 0.0,
-0.2, -0.5,
-0.3, 0.0
};
// Generam un buffer in memoria video si scriem in el punctele din ram
GLuint vbo_red;
glGenBuffers(1, &vbo_red); // generam un buffer
glBindBuffer(GL_ARRAY_BUFFER, vbo_red); // setam bufferul generat ca bufferul curent
glBufferData(GL_ARRAY_BUFFER,sizeof(float)*6, vertex_buffer_red, GL_STATIC_DRAW); // scriem in bufferul din memoria video informatia din bufferul din memoria RAM
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
GLuint vbo_green;
glGenBuffers(1, &vbo_green); // generam un buffer
glBindBuffer(GL_ARRAY_BUFFER, vbo_green); // setam bufferul generat ca bufferul curent
glBufferData(GL_ARRAY_BUFFER,sizeof(float)*6, vertex_buffer_green, GL_STATIC_DRAW); // scriem in bufferul din memoria video informatia din bufferul din memoria RAM
// De partea aceasta am uitat sa va spun la curs -> Pentru a defini bufferul alocat de opengl ca fiind buffer de in de atribute, stream de vertecsi trebuie sa :
// 1. Ii spunem OpenGL-ului ca vom avea un slot pentru acest atribut (in cazul nostru 0) , daca mai aveam vreun atribut ar fi trebuit si acela enablat pe alt slot (de exemplu 1)
// 2. Definit bufferul ca Vertex Attribute Pointer cu glVertexAttribPointer
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, NULL);
while (!glfwWindowShouldClose(window)) {
//..... Randare.................
// stergem ce s-a desenat anterior
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// spunem ce shader vom folosi pentru desenare
glUseProgram(shader_programme_red);
// facem bind la vertex buffer
glBindBuffer(GL_ARRAY_BUFFER, vbo_red);
// draw points 0-3 from the currently bound VAO with current in-use shader
glDrawArrays(GL_TRIANGLES, 0, 3);
//glUseProgram(NULL);
//glBindBuffer(GL_ARRAY_BUFFER, NULL);
glUseProgram(shader_programme_green);
glBindBuffer(GL_ARRAY_BUFFER, vbo_green);
glDrawArrays(GL_TRIANGLES,0,3);
// facem swap la buffere (Double buffer)
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}
// ------------------------------------------------------------------- main ---
int main( int argc, char **argv )
{
GLFWwindow* window;
char* screenshot_path = NULL;
if (argc > 1)
{
if (argc == 3 && 0 == strcmp( "--screenshot", argv[1] ))
screenshot_path = argv[2];
else
{
fprintf( stderr, "Unknown or incomplete parameters given\n" );
exit( EXIT_FAILURE );
}
}
glfwSetErrorCallback( error_callback );
if (!glfwInit( ))
{
exit( EXIT_FAILURE );
}
glfwWindowHint( GLFW_VISIBLE, GL_FALSE );
glfwWindowHint( GLFW_RESIZABLE, GL_FALSE );
window = glfwCreateWindow( 1000, 500, argv[0], NULL, NULL );
if (!window)
{
glfwTerminate( );
exit( EXIT_FAILURE );
}
glfwMakeContextCurrent( window );
glfwSwapInterval( 1 );
glfwSetFramebufferSizeCallback( window, reshape );
glfwSetWindowRefreshCallback( window, display );
glfwSetKeyCallback( window, keyboard );
#ifndef __APPLE__
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf( stderr, "Error: %s\n", glewGetErrorString(err) );
exit( EXIT_FAILURE );
}
fprintf( stderr, "Using GLEW %s\n", glewGetString(GLEW_VERSION) );
#endif
float start=(float)(glfwGetTime()*1000.0f);
init();
////printf("init waste_time: %f\n", (float)(glfwGetTime()*1000.0f)-start);
glfwShowWindow( window );
reshape( window, 1000, 500 );
while(!glfwWindowShouldClose( window ))
{
start=(float)(glfwGetTime()*1000.0f);
display( window );
glfwPollEvents( );
///printf("waste_time: %f\n", (float)(glfwGetTime()*1000.0f)-start);
if (screenshot_path)
{
screenshot( window, (const char*)screenshot_path );
glfwSetWindowShouldClose( window, 1 );
}
}
glDeleteProgram( bounds_shader );
glDeleteProgram( text_shader );
glDeleteTextures( 1, &font_manager->atlas->id );
font_manager->atlas->id = 0;
text_buffer_delete( buffer );
font_manager_delete( font_manager );
glfwDestroyWindow( window );
glfwTerminate( );
return EXIT_SUCCESS;
}
int main()
{
/* Create a context object. This object owns the handles to all connected realsense devices. */
rs_context * ctx = rs_create_context(RS_API_VERSION, &e);
check_error();
printf("There are %d connected RealSense devices.\n", rs_get_device_count(ctx, &e));
check_error();
if(rs_get_device_count(ctx, &e) == 0) return EXIT_FAILURE;
/* This tutorial will access only a single device, but it is trivial to extend to multiple devices */
rs_device * dev = rs_get_device(ctx, 0, &e);
check_error();
printf("\nUsing device 0, an %s\n", rs_get_device_name(dev, &e));
check_error();
printf(" Serial number: %s\n", rs_get_device_serial(dev, &e));
check_error();
printf(" Firmware version: %s\n", rs_get_device_firmware_version(dev, &e));
check_error();
/* Configure all streams to run at VGA resolution at 60 frames per second */
rs_enable_stream(dev, RS_STREAM_DEPTH, 640, 480, RS_FORMAT_Z16, 60, &e);
check_error();
rs_enable_stream(dev, RS_STREAM_COLOR, 640, 480, RS_FORMAT_RGB8, 60, &e);
check_error();
rs_enable_stream(dev, RS_STREAM_INFRARED, 640, 480, RS_FORMAT_Y8, 60, &e);
check_error();
rs_enable_stream(dev, RS_STREAM_INFRARED2, 640, 480, RS_FORMAT_Y8, 60, NULL); /* Pass NULL to ignore errors */
rs_start_device(dev, &e);
check_error();
/* Open a GLFW window to display our output */
glfwInit();
GLFWwindow * win = glfwCreateWindow(1280, 960, "librealsense tutorial #2", NULL, NULL);
glfwMakeContextCurrent(win);
while(!glfwWindowShouldClose(win))
{
/* Wait for new frame data */
glfwPollEvents();
rs_wait_for_frames(dev, &e);
check_error();
glClear(GL_COLOR_BUFFER_BIT);
glPixelZoom(1, -1);
/* Display depth data by linearly mapping depth between 0 and 2 meters to the red channel */
glRasterPos2f(-1, 1);
glPixelTransferf(GL_RED_SCALE, 0xFFFF * rs_get_device_depth_scale(dev, &e) / 2.0f);
check_error();
glDrawPixels(640, 480, GL_RED, GL_UNSIGNED_SHORT, rs_get_frame_data(dev, RS_STREAM_DEPTH, &e));
check_error();
glPixelTransferf(GL_RED_SCALE, 1.0f);
/* Display color image as RGB triples */
glRasterPos2f(0, 1);
glDrawPixels(640, 480, GL_RGB, GL_UNSIGNED_BYTE, rs_get_frame_data(dev, RS_STREAM_COLOR, &e));
check_error();
/* Display infrared image by mapping IR intensity to visible luminance */
glRasterPos2f(-1, 0);
glDrawPixels(640, 480, GL_LUMINANCE, GL_UNSIGNED_BYTE, rs_get_frame_data(dev, RS_STREAM_INFRARED, &e));
check_error();
/* Display second infrared image by mapping IR intensity to visible luminance */
if(rs_is_stream_enabled(dev, RS_STREAM_INFRARED2, NULL))
{
glRasterPos2f(0, 0);
glDrawPixels(640, 480, GL_LUMINANCE, GL_UNSIGNED_BYTE, rs_get_frame_data(dev, RS_STREAM_INFRARED2, &e));
}
glfwSwapBuffers(win);
}
return EXIT_SUCCESS;
}
// The MAIN function, from here we start our application and run our Game loop
int main()
{
// Init GLFW
glfwInit();
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);
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // uncomment this statement to fix compilation on OS X
GLFWwindow* window = glfwCreateWindow(screenWidth, screenHeight, "LearnOpenGL", nullptr, nullptr); // Windowed
glfwMakeContextCurrent(window);
// Set the required callback functions
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, mouse_callback);
glfwSetScrollCallback(window, scroll_callback);
// Options
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
// Initialize GLEW to setup the OpenGL Function pointers
glewExperimental = GL_TRUE;
glewInit();
// Define the viewport dimensions
glViewport(0, 0, screenWidth, screenHeight);
// Setup some OpenGL options
glEnable(GL_DEPTH_TEST);
// glDepthFunc(GL_ALWAYS); // Set to always pass the depth test (same effect as glDisable(GL_DEPTH_TEST))
// Setup and compile our shaders
Shader shader("depth_testing.vs", "depth_testing.frag");
#pragma region "object_initialization"
// Set the object data (buffers, vertex attributes)
GLfloat cubeVertices[] = {
// Positions // Texture Coords
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 1.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 1.0f, 1.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f,
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f
};
GLfloat planeVertices[] = {
// Positions // Texture Coords (note we set these higher than 1 that together with GL_REPEAT as texture wrapping mode will cause the floor texture to repeat)
5.0f, -0.5f, 5.0f, 2.0f, 0.0f,
-5.0f, -0.5f, 5.0f, 0.0f, 0.0f,
-5.0f, -0.5f, -5.0f, 0.0f, 2.0f,
5.0f, -0.5f, 5.0f, 2.0f, 0.0f,
-5.0f, -0.5f, -5.0f, 0.0f, 2.0f,
5.0f, -0.5f, -5.0f, 2.0f, 2.0f
};
// Setup cube VAO
GLuint cubeVAO, cubeVBO;
glGenVertexArrays(1, &cubeVAO);
glGenBuffers(1, &cubeVBO);
glBindVertexArray(cubeVAO);
glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glBindVertexArray(0);
// Setup plane VAO
GLuint planeVAO, planeVBO;
glGenVertexArrays(1, &planeVAO);
glGenBuffers(1, &planeVBO);
glBindVertexArray(planeVAO);
glBindBuffer(GL_ARRAY_BUFFER, planeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(planeVertices), &planeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glBindVertexArray(0);
// Load textures
GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
#pragma endregion
// Game loop
while(!glfwWindowShouldClose(window))
{
// Set frame time
GLfloat currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
// Check and call events
glfwPollEvents();
Do_Movement();
// Clear the colorbuffer
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Draw objects
shader.Use();
glm::mat4 model;
glm::mat4 view = camera.GetViewMatrix();
glm::mat4 projection = glm::perspective(camera.Zoom, (float)screenWidth/(float)screenHeight, 0.1f, 100.0f);
glUniformMatrix4fv(glGetUniformLocation(shader.Program, "view"), 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(glGetUniformLocation(shader.Program, "projection"), 1, GL_FALSE, glm::value_ptr(projection));
// Cubes
glBindVertexArray(cubeVAO);
glBindTexture(GL_TEXTURE_2D, cubeTexture); // We omit the glActiveTexture part since TEXTURE0 is already the default active texture unit. (sampler used in fragment is set to 0 as well as default)
model = glm::translate(model, glm::vec3(-1.0f, 0.0f, -1.0f));
glUniformMatrix4fv(glGetUniformLocation(shader.Program, "model"), 1, GL_FALSE, glm::value_ptr(model));
glDrawArrays(GL_TRIANGLES, 0, 36);
model = glm::mat4();
model = glm::translate(model, glm::vec3(2.0f, 0.0f, 0.0f));
glUniformMatrix4fv(glGetUniformLocation(shader.Program, "model"), 1, GL_FALSE, glm::value_ptr(model));
glDrawArrays(GL_TRIANGLES, 0, 36);
// Floor
glBindVertexArray(planeVAO);
glBindTexture(GL_TEXTURE_2D, floorTexture);
model = glm::mat4();
glUniformMatrix4fv(glGetUniformLocation(shader.Program, "model"), 1, GL_FALSE, glm::value_ptr(model));
glDrawArrays(GL_TRIANGLES, 0, 6);
glBindVertexArray(0);
// Swap the buffers
glfwSwapBuffers(window);
}
glfwTerminate();
return 0;
}
void InputManager::PollEvents() {
glfwPollEvents();
}
static int
lPollEvents(lua_State *L) {
glfwPollEvents();
return 0;
}
//===================================================================//
//==================Main Method=====================================//
//==================================================================//
int main()
{
//===================================================================//
//==================Things you need to start with====================//
//==================================================================//
glfwInit();
Window testWindow(500, 50, 800, 600, "testWindow");
glfwMakeContextCurrent(testWindow.getWindow());
cam.setCenter(glm::vec4(0.0, 10.0, 20.0, 1.0));
cam.setName("StrategyCam");
cam.setKeySpeed(2.0);
cam.setNearFar(0.0001, 100);
glfwSetKeyCallback(testWindow.getWindow(), key_callback);
glfwSetScrollCallback(testWindow.getWindow(), mouseScroll_callback);
glewInit();
OpenGL3Context context;
Renderer renderer(context);
//===================================================================//
//==================Shaders for your program========================//
//==================================================================//
VertexShader vs(loadShaderSource(SHADERS_PATH + std::string("/TextureShader3D/TextureShader3D.vert")));
FragmentShader fs(loadShaderSource(SHADERS_PATH + std::string("/TextureShader3D/TextureShader3D.frag")));
ShaderProgram shader(vs, fs);
//===================================================================//
//==================A Graph for the AI-Unit=========================//
//==================================================================//
glm::vec3 posFood(10.0, 0.0, -5.0);
glm::vec3 posSpawn(10.0, 0.0, 60.0);
Graph<AStarNode, AStarAlgorithm> testGraph;
// testGraph.setExampleGraph2(posSpawn, posFood, geko.getPosition());
//===================================================================//
//==================A Decision-Tree for the AI-Unit==================//
//==================================================================//
DecisionTree defaultTree;
defaultTree.setAntTreeAggressiv();
//===================================================================//
//==================Object declarations - Geometry, Texture, Node=== //
//==========================Object: AI==============================//
Teapot teaAnt;
Texture texPlayer((char*)RESOURCES_PATH "/Snake.jpg");
SoundFileHandler sfh = SoundFileHandler(1000);
//AStarNode defaultASNode("Default");
//AI ant_Flick(&defaultTree, &defaultASNode, &aiNode);
AI ant_Flick;
//ant_Flick.setAntAfraid();
/*ant_Flick.setGraph(&testGraph);
ant_Flick.setPosition(posSpawn);
ant_Flick.setPosHome(testGraph.searchNode("Spawn"));*/
//ant_Flick.addFoodNodes(testGraph.searchNode("Food"));
AntMesh ant;
Node aiNode("Flick");
aiNode.addGeometry(&ant);
aiNode.addTexture(&texPlayer);
// aiNode.addScale(0.3, 0.3, 0.3);
//aiNode.addTranslation(ant_Flick.getPosition().x, ant_Flick.getPosition().y, ant_Flick.getPosition().z);
aiNode.setObject(&ant_Flick);
//aiNode.setSoundHandler(&sfh);
// aiNode.setSourceName("Ameise1", RESOURCES_PATH "/Sound/Footsteps.wav");
//===================================================================//
//==================Object declarations - Geometry, Texture, Node=== //
//==========================Object: Player===========================//
Teapot teaPlayer;
Texture texCV((char*)RESOURCES_PATH "/cv_logo.bmp");
GekoMesh gekoMesh;
geko.setExp(0.0);
geko.setLevelThreshold(100.0);
geko.setLevel(0);
Node playerNode("Player");
playerNode.addGeometry(&gekoMesh);
playerNode.setObject(&geko);
playerNode.addTexture(&texCV);
// playerNode.addScale(0.5, 0.5, 0.5);
// playerNode.addTranslation(20.0, 0.0, 20.0);
geko.setSoundHandler(&sfh);
geko.setSourceName(MOVESOUND, "SpielerFootsteps", RESOURCES_PATH "/Sound/rascheln.wav");
geko.setSourceName(BACKGROUNDMUSIC, "Hintergrund", RESOURCES_PATH "/Sound/jingle2.wav");
geko.setSourceName(FIGHTSOUND, "Kampfsound", RESOURCES_PATH "/Sound/Cookies kurz.wav");
geko.setSourceName(EATSOUND, "Essen", RESOURCES_PATH "/Sound/Munching.wav");
geko.setSourceName(QUESTSOUND, "Quest", RESOURCES_PATH "/Sound/jingle.wav");
geko.setSourceName(ITEMSOUND, "Item", RESOURCES_PATH "/Sound/itempickup.wav");
sfh.disableLooping("Essen");
sfh.disableLooping("Kampfsound");
sfh.disableLooping("Quest");
sfh.disableLooping("Item");
sfh.generateSource("Feuer",posFood, RESOURCES_PATH "/Sound/Feuer kurz.wav");
playerNode.setCamera(&cam);
// ==============================================================
// == Items =====================================================
// ==============================================================
/*Item cookie(1);
cookie.setName("Cookie");
cookie.setTypeId(ItemType::COOKIE);
Item cookie2(2);
cookie.setName("Cookie");
cookie.setTypeId(ItemType::COOKIE);
Item branch(3);
branch.setName("Branch");
branch.setTypeId(ItemType::BRANCH);
*/
//===================================================================//
//==================Object declarations - Geometry, Texture, Node=== //
//==========================Object: Tree===========================//
TreeMesh tree;
glm::vec3 trees[5] = { glm::vec3(16.0, 0.0, 76.0), glm::vec3(23.0, 0.0, 74.0), glm::vec3(21.5, 0.0, 78.5), glm::vec3(15.0, 0.0, 81.5), glm::vec3(27.5, 0.0, 88.5), };
StaticObject treeStatic;
treeStatic.setTree();
// treeStatic.setObjectType(ObjectType::TREE);
Node treeNode("Tree");
treeNode.addGeometry(&tree);
treeNode.setObject(&treeStatic);
//treeNode.addScale(10.0, 10.0, 10.0);
treeNode.addTranslation(trees[0]);
treeNode.getBoundingSphere()->radius = 3.0;
StaticObject treeStatic2;
treeStatic2.setTree();
Node treeNode2("Tree2");
treeNode2.addGeometry(&tree);
treeNode2.setObject(&treeStatic2);
treeNode2.addTranslation(trees[1]);
treeNode2.getBoundingSphere()->radius = 3.0;
StaticObject treeStatic3;
treeStatic3.setTree();
Node treeNode3("Tree3");
treeNode3.addGeometry(&tree);
treeNode3.setObject(&treeStatic3);
treeNode3.addTranslation(trees[2]);
treeNode3.getBoundingSphere()->radius = 3.0;
StaticObject treeStatic4;
treeStatic4.setTree();
Node treeNode4("Tree4");
treeNode4.addGeometry(&tree);
treeNode4.setObject(&treeStatic4);
treeNode4.addTranslation(trees[3]);
treeNode4.getBoundingSphere()->radius = 3.0;
StaticObject treeStatic5;
treeStatic5.setTree();
Node treeNode5("Tree5");
treeNode5.addGeometry(&tree);
treeNode5.setObject(&treeStatic5);
treeNode5.addTranslation(trees[4]);
treeNode5.getBoundingSphere()->radius = 3.0;
//treeStatic.getInventory()->addItem(&cookie, 25);
//treeStatic.getInventory()->addItem(&branch, 10);
//===================================================================//
//==================Object declarations - Geometry, Texture, Node=== //
//==========================Object: Plane===========================//
Plane terrain;
Texture terrainTex((char*)RESOURCES_PATH "/Grass.jpg");
Node terrainNode("Plane");
terrainNode.addGeometry(&terrain);
terrainNode.addTexture(&terrainTex);
terrainNode.addTranslation(0.0, -0.75, 0.0);
terrainNode.addRotation(90.0f, glm::vec3(1.0, 0.0, 0.0));
terrainNode.addScale(100.0, 100.0, 100.0);
//===================================================================//
//==================Setting up the Level and Scene==================//
//==================================================================//
Level testLevel("testLevel");
Scene testScene("testScene");
testLevel.addScene(&testScene);
testLevel.changeScene("testScene");
//==================Add Camera to Scene============================//
testScene.getScenegraph()->addCamera(&cam);
testScene.getScenegraph()->setActiveCamera("StrategyCam");
//==================Set Input-Maps and activate one================//
iH.setAllInputMaps(*(testScene.getScenegraph()->getActiveCamera()));
iH.changeActiveInputMap("Strategy");
//==================Add Objects to the Scene=======================//
//==================Update the Bounding-Sphere 1st time============//
testScene.getScenegraph()->getRootNode()->addChildrenNode(&aiNode);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&playerNode);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&terrainNode);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&treeNode);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&treeNode2);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&treeNode3);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&treeNode4);
testScene.getScenegraph()->getRootNode()->addChildrenNode(&treeNode5);
// ==============================================================
// == Questsystem ====================================================
// ==============================================================
//QuestHandler questhandler;
//testLevel.getQuestHandler()->getGraph()->setExampleGraph();
Quest questCollect(1);
questCollect.setActive(true);
Goal_Collect goalCollect(1);
Goal_Collect goalCollect3(3);
questCollect.addGoal(&goalCollect);
questCollect.addGoal(&goalCollect3);
ExpReward expReward(1);
expReward.setExp(100);
questCollect.addReward(&expReward);
Quest questCollect2(2);
questCollect2.setActive(true);
Goal_Collect goalCollect2(2);
questCollect2.addGoal(&goalCollect2);
questCollect2.addReward(&expReward);
goalCollect.setGoalCount(50);
goalCollect2.setGoalCount(50);
goalCollect3.setGoalCount(50);
goalCollect.setItemType(ItemType::BRANCH);
goalCollect2.setItemType(ItemType::BRANCH);
goalCollect3.setItemType(ItemType::COOKIE);
testLevel.getQuestHandler()->addQuest(&questCollect);
testLevel.getQuestHandler()->addQuest(&questCollect2);
//===================================================================//
//==================Setting up the Collision=========================//
//==================================================================//
CollisionTest collision;
collision.collectNodes(testScene.getScenegraph()->getRootNode());
//===================================================================//
//==================Setting up the Observers========================//
//==================================================================//
ObjectObserver aiObserver(&testLevel);
SoundObserver soundAIObserver(&testLevel);
ant_Flick.addObserver(&aiObserver);
ant_Flick.addObserver(&soundAIObserver);
ObjectObserver playerObserver(&testLevel);
SoundObserver soundPlayerObserver(&testLevel);
geko.addObserver(&playerObserver);
geko.addObserver(&soundPlayerObserver);
CollisionObserver colObserver(&testLevel);
collision.addObserver(&colObserver);
collision.addObserver(&soundPlayerObserver);
GravityObserver gravityObserver(&testLevel);
collision.addObserver(&gravityObserver);
QuestObserver questObserver(&testLevel);
questCollect.addObserver(&questObserver);
questCollect2.addObserver(&questObserver);
questCollect.addObserver(&soundPlayerObserver);
questCollect2.addObserver(&soundPlayerObserver);
goalCollect.addObserver(&questObserver);
goalCollect2.addObserver(&questObserver);
goalCollect3.addObserver(&questObserver);
testLevel.getFightSystem()->addObserver(&questObserver);
//===================================================================//
//==================Setting up the Gravity===========================//
//==================================================================//
Gravity gravity;
playerNode.addGravity(&gravity);
aiNode.addGravity(&gravity);
//===================================================================//
//==================The Render-Loop==================================//
//==================================================================//
float lastTime = glfwGetTime();
Node* tmp = testLevel.getActiveScene()->getScenegraph()->searchNode("Plane");
tmp->getNodeName();
sfh.updateListenerPosition(glm::vec3(10.0, 3.0, -5.0));
sfh.playSource("Feuer");
sfh.playSource("Hintergrund");
sfh.setGain("Hintergrund", 0.5f);
while (!glfwWindowShouldClose(testWindow.getWindow()))
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
float currentTime = glfwGetTime();
float deltaTime = currentTime - lastTime;
lastTime = currentTime;
mouse_callback(testWindow.getWindow());
//===================================================================//
//==================Update your Objects per Frame here =============//
//==================================================================//
collision.update();
//ant_Flick.updateState();
ant_Flick.update();
//===================================================================//
//==================Input and update for the Player==================//
//==================================================================//
playKey_callback(testWindow.getWindow());
//geko.update(deltaTime);
//===================================================================//
//==================Render your Objects==============================//
//==================================================================//
glEnable(GL_DEPTH_TEST);
shader.bind();
shader.sendMat4("viewMatrix", cam.getViewMatrix());
shader.sendMat4("projectionMatrix", cam.getProjectionMatrix());
testScene.render(shader);
shader.unbind();
glfwSwapBuffers(testWindow.getWindow());
glfwPollEvents();
}
glfwDestroyWindow(testWindow.getWindow());
glfwTerminate();
return 0;
}
int main(int argc, char** argv)
{
int width, height, ch;
int mode = GLFW_WINDOWED;
GLFWwindow window;
while ((ch = getopt(argc, argv, "fh")) != -1)
{
switch (ch)
{
case 'h':
usage();
exit(EXIT_SUCCESS);
case 'f':
mode = GLFW_FULLSCREEN;
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError()));
exit(EXIT_FAILURE);
}
if (mode == GLFW_FULLSCREEN)
{
GLFWvidmode desktop_mode;
glfwGetDesktopMode(&desktop_mode);
width = desktop_mode.width;
height = desktop_mode.height;
}
else
{
width = 200;
height = 200;
}
window = glfwCreateWindow(width, height, mode, "Gamma Test", NULL);
if (!window)
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window: %s\n", glfwErrorString(glfwGetError()));
exit(EXIT_FAILURE);
}
set_gamma(1.f);
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
glfwSetKeyCallback(window, key_callback);
glfwSetWindowCloseCallback(window, window_close_callback);
glfwSetWindowSizeCallback(window, size_callback);
glMatrixMode(GL_PROJECTION);
glOrtho(-1.f, 1.f, -1.f, 1.f, -1.f, 1.f);
glMatrixMode(GL_MODELVIEW);
glClearColor(0.5f, 0.5f, 0.5f, 0);
while (!closed)
{
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(0.8f, 0.2f, 0.4f);
glRectf(-0.5f, -0.5f, 0.5f, 0.5f);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
exit(EXIT_SUCCESS);
}
int main()
{
inits();
Shader text_shader("text.vs", "text.frag");
Shader ourShader("coordinate_systems.vs", "coordinate_systems.frag");
Shader bar_shader("bar.vs", "bar.frag");
inittext(text_shader);
initbar(bar_shader);
// Set up our vertex data (and buffer(s)) and attribute pointers
msg(sizeof(vertices_indexed));
msg(sizeof(indices));
msg(sizeof(vertices));
#ifdef use_indexed
makeglgeom_indexed(VBO_indexed, VAO_indexed, EBO_indexed, vertices_indexed, indices, sizeof(vertices_indexed), sizeof(indices));
#else
makeglgeom(VBO, VAO, vertices, sizeof(vertices));
#endif
// Load and create a texture
makegltext(texture1, "resources/textures/container.jpg");
makegltext(texture2, "resources/textures/awesomeface.png");
GLint modelLoc = glGetUniformLocation(ourShader.Program, "model");
GLint viewLoc = glGetUniformLocation(ourShader.Program, "view");
GLint projLoc = glGetUniformLocation(ourShader.Program, "projection");
// Game loop
while (!glfwWindowShouldClose(window))
{
// Set frame time
GLfloat currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
#ifdef RAWMOUSE
acc += updatemouse();
#endif
//vec2 diff = mouse - acc;
//log
//mousepos += acc;
lag = lag_coeff*acc;
//lag = lag_coeff*vec2(log(abs(acc.x)), log(abs(acc.y)));
//if (acc.x < 0)lag.x *= -1.0f;
//if (acc.y < 0)lag.y *= -1.0f;
if (abs(lag.x) < 1e-4) lag.x = 0;
if (abs(lag.y) < 1e-4) lag.y = 0;
acc -= lag;
camera.ProcessMouseMovement(lag.x, lag.y);
show2(mouse);
show2(lag);
show2(acc);
//show2(string(int(0.1f*length(acc)), '='));
//show2(string(int(10.f*length(lag)), '='));
// Check and call events #######################################
glfwPollEvents();
Do_Movement();
// Clear the colorbuffer
glClearColor(0.2f, 0.2f, 0.2f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// texts #######################
int line = 0;
for (auto&a : texts)
{
RenderText(text_shader, a.first + " " + a.second,
25.0f, (line + 1)*25.0f, 0.3f, glm::vec3(1, 1, 1));
++line;
}
//RenderText(text_shader, "(C) LearnOpenGL.com", 540.0f, 570.0f, 0.5f, glm::vec3(0.3, 0.7f, 0.9f));
drawbar(bar_shader);
// Draw our first triangle #######################
ourShader.Use();
// Bind Textures using texture units #######################
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture1);
glUniform1i(glGetUniformLocation(ourShader.Program, "ourTexture1"), 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture2);
glUniform1i(glGetUniformLocation(ourShader.Program, "ourTexture2"), 1);
// Create camera transformation #######################
glm::mat4 view;
view = camera.GetViewMatrix();
glm::mat4 projection;
projection = glm::perspective(glm::radians(camera.Zoom), (float)screenWidth / (float)screenHeight, 0.1f, 1000.0f);
// Get the uniform locations
// Pass the matrices to the shader
glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(projection));
#ifdef use_indexed
glBindVertexArray(VAO_indexed);
#else
glBindVertexArray(VAO);
#endif
for (GLuint i = 0; i < 10; i++)
{
// Calculate the model matrix for each object and pass it to shader before drawing
glm::mat4 model;
model = glm::translate(model, cubePositions[i]);
GLfloat angle = 20.0f * i;
model = glm::rotate(model, angle, glm::vec3(1.0f, 0.3f, 0.5f));
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
#ifdef use_indexed
glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, 0);
#else
glDrawArrays(GL_TRIANGLES, 0, 36);
#endif
}
glBindVertexArray(0);
// Swap the buffers
glfwSwapBuffers(window);
}
// Properly de-allocate all resources once they've outlived their purpose
glDeleteVertexArrays(1, &VAO);
glDeleteBuffers(1, &VBO);
glfwTerminate();
ManyMouse_Quit();
return 0;
}
// The MAIN function, from here we start the application and run the game loop
int main(int argc, char **argv)
{
// Init GLFW
glfwInit();
// Set all the required options for GLFW
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);
// Create a GLFWwindow object that we can use for GLFW's functions
GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", nullptr, nullptr);
glfwMakeContextCurrent(window);
// Set the required callback functions
glfwSetKeyCallback(window, key_callback);
// Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
glewExperimental = GL_TRUE;
// Initialize GLEW to setup the OpenGL Function pointers
glewInit();
// Load texture
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " image_path image_path2" << std::endl;
exit(EXIT_FAILURE);
}
GLuint texture = load_texture(argv[1]);
if (!texture) {
std::cerr << "ERROR could not load image " << argv[1] << std::endl;
exit(EXIT_FAILURE);
}
GLuint texture2 = load_texture(argv[2]);
if (!texture2) {
std::cerr << "ERROR could not laod image " << argv[2] << std::endl;
exit(EXIT_FAILURE);
}
// Define the viewport dimensions
glViewport(0, 0, WIDTH, HEIGHT);
Shader ourShader("./shader.vert", "./shader.frag");
// Set up vertex data (and buffer(s)) and attribute pointers
GLfloat vertices[] = {
// Positions // Color // Texture Coords
0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // Top Right
0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // Bottom Right
-0.5f, -0.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, // Bottom Left
-0.5f, 0.5f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, // Top Left
};
GLuint indices[] = {
0, 1, 3, // First triangle
1, 2, 3, // Second triangle
};
GLuint VBO, VAO, EBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
// Bind the Vertex Array Object first, then bind and set vertex buffer(s) and attribute pointer(s).
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
// Positions
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
// Colors
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(1);
// Texture coords
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(6 * sizeof(GLfloat)));
glEnableVertexAttribArray(2);
glBindBuffer(GL_ARRAY_BUFFER, 0); // Note that this is allowed, the call to glVertexAttribPointer registered VBO as the currently bound vertex buffer object so afterwards we can safely unbind
glBindVertexArray(0); // Unbind VAO (it's always a good thing to unbind any buffer/array to prevent strange bugs)
// Game loop
while (!glfwWindowShouldClose(window))
{
// Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
glfwPollEvents();
// Render
// Clear the colorbuffer
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Draw our first triangle
ourShader.use();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glUniform1i(glGetUniformLocation(ourShader.program_, "ourTexture1"), 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture2);
glUniform1i(glGetUniformLocation(ourShader.program_, "ourTexture2"), 1);
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
// Swap the screen buffers
glfwSwapBuffers(window);
}
// Properly de-allocate all resources once they've outlived their purpose
glDeleteVertexArrays(1, &VAO);
glDeleteBuffers(1, &VBO);
// Terminate GLFW, clearing any resources allocated by GLFW.
glfwTerminate();
return 0;
}
int main(int argc, char** argv)
{
int count = 0;
GLFWwindow* window;
glfwSetErrorCallback(error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
for (;;)
{
GLFWmonitor* monitor = NULL;
if (count & 1)
{
int monitorCount;
GLFWmonitor** monitors = glfwGetMonitors(&monitorCount);
monitor = monitors[rand() % monitorCount];
}
window = open_window(640, 480, monitor);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glMatrixMode(GL_PROJECTION);
glOrtho(-1.f, 1.f, -1.f, 1.f, 1.f, -1.f);
glMatrixMode(GL_MODELVIEW);
glfwSetTime(0.0);
while (glfwGetTime() < 5.0)
{
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef((GLfloat) glfwGetTime() * 100.f, 0.f, 0.f, 1.f);
glRectf(-0.5f, -0.5f, 1.f, 1.f);
glPopMatrix();
glfwSwapBuffers(window);
glfwPollEvents();
if (glfwWindowShouldClose(window))
{
close_window(window);
printf("User closed window\n");
glfwTerminate();
exit(EXIT_SUCCESS);
}
}
printf("Closing window\n");
close_window(window);
count++;
}
glfwTerminate();
}
int main()
{
glfwInit();
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);
GLFWwindow* window = glfwCreateWindow(800, 600, "LearnOpenGL", nullptr, nullptr);
if (window == nullptr) {
std::cerr << "Failed to create GLFW window" << std::endl;
return -1;
}
glfwMakeContextCurrent(window);
glfwSetKeyCallback(window, key_callback);
glewExperimental = GL_TRUE;
if (glewInit() != GLEW_OK) {
std::cout << "Failed to initialize GLEW" << std::endl;
return -1;
}
glViewport(0, 0, 800, 600);
GLfloat vertices[] = {
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f,
0.0f, 0.5f, 0.0f
};
GLuint VBO;
glGenBuffers(1, &VBO);
GLuint VAO;
glGenVertexArrays(1, &VAO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GL_FLOAT), (GLvoid*)0);
glEnableVertexAttribArray(0);
glBindVertexArray(0);
GLuint vertexShader;
try {
vertexShader = load_shader(vertex);
} catch (std::exception e) {
std::cerr << e.what() << std::endl;
return -1;
}
GLuint fragmentShader;
try {
fragmentShader = load_shader(fragment);
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
return -1;
}
GLuint shaderProgram;
shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
GLint success;
GLchar infoLog[512];
glGetShaderiv(shaderProgram, GL_LINK_STATUS, &success);
if (!success) {
glGetShaderInfoLog(shaderProgram, 512, NULL, infoLog);
std::cerr << "ERROR: Shader linking failed\n" << infoLog << std::endl;
return -1;
}
glUseProgram(shaderProgram);
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
std::cout << glGetString(GL_VERSION) << std::endl;
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glBindVertexArray(VAO);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindVertexArray(0);
glfwSwapBuffers(window);
}
glfwTerminate();
return 0;
}
int main () {
assert (restart_gl_log ());
assert (start_gl ());
// tell GL to only draw onto a pixel if the shape is closer to the viewer
glEnable (GL_DEPTH_TEST); // enable depth-testing
glDepthFunc (GL_LESS); // depth-testing interprets a smaller value as "closer"
GLfloat points[] = {
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f,
0.5f, 0.5f, 0.0f,
0.5f, 0.5f, 0.0f,
-0.5f, 0.5f, 0.0f,
-0.5f, -0.5f, 0.0f
};
GLfloat texcoords[] = {
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f
};
GLuint points_vbo;
glGenBuffers (1, &points_vbo);
glBindBuffer (GL_ARRAY_BUFFER, points_vbo);
glBufferData (GL_ARRAY_BUFFER, 18 * sizeof (GLfloat), points, GL_STATIC_DRAW);
GLuint texcoords_vbo;
glGenBuffers (1, &texcoords_vbo);
glBindBuffer (GL_ARRAY_BUFFER, texcoords_vbo);
glBufferData (GL_ARRAY_BUFFER, 12 * sizeof (GLfloat), texcoords, GL_STATIC_DRAW);
GLuint vao;
glGenVertexArrays (1, &vao);
glBindVertexArray (vao);
glBindBuffer (GL_ARRAY_BUFFER, points_vbo);
glVertexAttribPointer (0, 3, GL_FLOAT, GL_FALSE, 0, NULL);
glBindBuffer (GL_ARRAY_BUFFER, texcoords_vbo);
glVertexAttribPointer (1, 2, GL_FLOAT, GL_FALSE, 0, NULL);
glEnableVertexAttribArray (0);
glEnableVertexAttribArray (1);
GLuint shader_programme = create_programme_from_files (
"test_vs.glsl", "test_fs.glsl");
#define ONE_DEG_IN_RAD (2.0 * M_PI) / 360.0 // 0.017444444
// input variables
float near = 0.1f; // clipping plane
float far = 100.0f; // clipping plane
float fov = 67.0f * ONE_DEG_IN_RAD; // convert 67 degrees to radians
float aspect = (float)g_gl_width / (float)g_gl_height; // aspect ratio
// matrix components
float range = tan (fov * 0.5f) * near;
float Sx = (2.0f * near) / (range * aspect + range * aspect);
float Sy = near / range;
float Sz = -(far + near) / (far - near);
float Pz = -(2.0f * far * near) / (far - near);
GLfloat proj_mat[] = {
Sx, 0.0f, 0.0f, 0.0f,
0.0f, Sy, 0.0f, 0.0f,
0.0f, 0.0f, Sz, -1.0f,
0.0f, 0.0f, Pz, 0.0f
};
float cam_speed = 1.0f; // 1 unit per second
float cam_yaw_speed = 10.0f; // 10 degrees per second
float cam_pos[] = {0.0f, 0.0f, 2.0f}; // don't start at zero, or we will be too close
float cam_yaw = 0.0f; // y-rotation in degrees
mat4 T = translate (identity_mat4 (), vec3 (-cam_pos[0], -cam_pos[1], -cam_pos[2]));
mat4 R = rotate_y_deg (identity_mat4 (), -cam_yaw);
mat4 view_mat = R * T;
int view_mat_location = glGetUniformLocation (shader_programme, "view");
glUseProgram (shader_programme);
glUniformMatrix4fv (view_mat_location, 1, GL_FALSE, view_mat.m);
int proj_mat_location = glGetUniformLocation (shader_programme, "proj");
glUseProgram (shader_programme);
glUniformMatrix4fv (proj_mat_location, 1, GL_FALSE, proj_mat);
// load texture
GLuint tex;
assert (load_texture ("skulluvmap.png", &tex));
glEnable (GL_CULL_FACE); // cull face
glCullFace (GL_BACK); // cull back face
glFrontFace (GL_CCW); // GL_CCW for counter clock-wise
while (!glfwWindowShouldClose (g_window)) {
static double previous_seconds = glfwGetTime ();
double current_seconds = glfwGetTime ();
double elapsed_seconds = current_seconds - previous_seconds;
previous_seconds = current_seconds;
_update_fps_counter (g_window);
// wipe the drawing surface clear
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glViewport (0, 0, g_gl_width, g_gl_height);
glUseProgram (shader_programme);
glBindVertexArray (vao);
// draw points 0-3 from the currently bound VAO with current in-use shader
glDrawArrays (GL_TRIANGLES, 0, 6);
// update other events like input handling
glfwPollEvents ();
if (GLFW_PRESS == glfwGetKey (g_window, GLFW_KEY_F11)) {
assert (screencapture ());
}
// control keys
bool cam_moved = false;
if (glfwGetKey (g_window, GLFW_KEY_A)) {
cam_pos[0] -= cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_D)) {
cam_pos[0] += cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_PAGE_UP)) {
cam_pos[1] += cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_PAGE_DOWN)) {
cam_pos[1] -= cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_W)) {
cam_pos[2] -= cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_S)) {
cam_pos[2] += cam_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_LEFT)) {
cam_yaw += cam_yaw_speed * elapsed_seconds;
cam_moved = true;
}
if (glfwGetKey (g_window, GLFW_KEY_RIGHT)) {
cam_yaw -= cam_yaw_speed * elapsed_seconds;
cam_moved = true;
}
// update view matrix
if (cam_moved) {
mat4 T = translate (identity_mat4 (), vec3 (-cam_pos[0], -cam_pos[1], -cam_pos[2])); // cam translation
mat4 R = rotate_y_deg (identity_mat4 (), -cam_yaw); //
mat4 view_mat = R * T;
glUniformMatrix4fv (view_mat_location, 1, GL_FALSE, view_mat.m);
}
if (GLFW_PRESS == glfwGetKey (g_window, GLFW_KEY_ESCAPE)) {
glfwSetWindowShouldClose (g_window, 1);
}
// put the stuff we've been drawing onto the display
glfwSwapBuffers (g_window);
}
// close GL context and any other GLFW resources
glfwTerminate();
return 0;
}
int main() {
adder::Polygon poly({{0, 0}, {144, 0}, {144, -72}, {72, -72}, {120, -48}, {48, -12}, {24, -24}, {72, -48}, {24 ,-72}, {0, -72}}, {256, 128});
std::vector<glm::vec3> colors = {{0.2, 0.0, 0.8}, {0.2, 0.0, 0.8}, {1.0, 0.0, 0.8}, {1.0, 1.0, 0.0}, {1.0, 0.0, 0.8}, {1.0, 0.0, 0.8}, {1.0, 0.0, 0.8}, {1.0, 0.0, 0.8}, {1.0, 0.0, 0.8}, {1.0, 0.0, 0.8}};
//poly.rotate(2*adder::PI/3, poly.get_pos());
adder::Body body(100, 100, -.1, poly);
boa::GLData poly_gl_data(poly.vertices(), 6);
poly_gl_data.set_attribute(3, colors);
boa::init(3, 3, GL_FALSE);
GLFWwindow* window = boa::create_window(640, 480, "BOA TEST");
glfwSetKeyCallback(window, key_callback);
glEnable(GL_DEPTH_TEST);
glClearColor(0.2, 0.5, 1.0, 0.0);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); // Outline mode
GLuint vertex_shader = boa::compile_shader("res/shaders/shader.vert", GL_VERTEX_SHADER);
GLuint fragment_shader = boa::compile_shader("res/shaders/shader.frag", GL_FRAGMENT_SHADER);
GLuint shader_program = boa::create_program({vertex_shader, fragment_shader});
glDeleteShader(vertex_shader);
glDeleteShader(fragment_shader);
// Create vertex array object
// The vertex array object stores the states of the vertex and index buffer
// objects defined inside of it, allowing them to be easily reused again.
// The vertex and index buffer objects store the vertex and index data on
// the gpu, respectively. They are cleared automatically after each drawing
// cycle, hence the need for the vertex array object. I think.
// TODO: find some way to abstract this
GLuint vao, vbo, ibo;
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
glGenBuffers(1, &ibo);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, poly_gl_data.get_verts_size(), poly_gl_data.get_vertices(), GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(1);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, poly_gl_data.get_indices_size(), poly_gl_data.get_indices(), GL_STATIC_DRAW);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
// Transformation matrices
glm::mat4 model, view, projection;
projection = glm::ortho(0.0f, 640.0f, 480.0f, 0.0f);
while(!glfwWindowShouldClose(window)) {
glfwPollEvents();
key_parse();
glUseProgram(shader_program);
// Update view matrix with new camera position
view = glm::translate(glm::mat4(), glm::vec3(camera_x, camera_y, 0.0f));
// Load uniforms
glUniformMatrix4fv(glGetUniformLocation(shader_program, "view"), 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(glGetUniformLocation(shader_program, "projection"), 1, GL_FALSE, glm::value_ptr(projection));
glBindVertexArray(vao);
// Render
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
model = glm::mat4();
glUniformMatrix4fv(glGetUniformLocation(shader_program, "model"), 1, GL_FALSE, glm::value_ptr(model));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glDrawElements(GL_TRIANGLES, poly_gl_data.get_num_elements(), GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glfwSwapBuffers(window);
}
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}
// The MAIN function, from here we start the application and run the game loop
int main()
{
// Init GLFW
glfwInit();
// Set all the required options for GLFW
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_ANY_PROFILE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
// Create a GLFWwindow object that we can use for GLFW's functions
GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", nullptr, nullptr);
glfwMakeContextCurrent(window);
// Set the required callback functions
glfwSetKeyCallback(window, key_callback);
// Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
glewExperimental = GL_TRUE;
// Initialize GLEW to setup the OpenGL Function pointers
glewInit();
// Define the viewport dimensions
glViewport(0, 0, WIDTH, HEIGHT);
// Build and compile our shader program
// Vertex shader
GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
glCompileShader(vertexShader);
// Check for compile time errors
GLint success;
GLchar infoLog[512];
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
if (!success)
{
glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" << infoLog << std::endl;
}
// Fragment shader
GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
glCompileShader(fragmentShader);
// Check for compile time errors
glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success);
if (!success)
{
glGetShaderInfoLog(fragmentShader, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" << infoLog << std::endl;
}
// Link shaders
GLuint shaderProgram = glCreateProgram();
glAttachShader(shaderProgram, vertexShader);
glAttachShader(shaderProgram, fragmentShader);
glLinkProgram(shaderProgram);
// Check for linking errors
glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
if (!success) {
glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" << infoLog << std::endl;
}
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
// Set up vertex data (and buffer(s)) and attribute pointers
GLfloat vertices[] = {
-0.5f, -0.5f, 0.0f, // Left
0.5f, -0.5f, 0.0f, // Right
-0.5f, 0.5f, 0.0f,
0.5f, 0.5f, 0.0f // Top
};
GLuint indices[] = {
0,1,3,
3,2,0
};
GLuint VBO, VAO, EBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
// Bind the Vertex Array Object first, then bind and set vertex buffer(s) and attribute pointer(s).
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0); // Note that this is allowed, the call to glVertexAttribPointer registered VBO as the currently bound vertex buffer object so afterwards we can safely unbind
glBindVertexArray(0); // Unbind VAO (it's always a good thing to unbind any buffer/array to prevent strange bugs)
// Game loop
while (!glfwWindowShouldClose(window))
{
// Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
glfwPollEvents();
// Render
// Clear the colorbuffer
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Draw our first triangle
glUseProgram(shaderProgram);
glBindVertexArray(VAO);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
// Swap the screen buffers
glfwSwapBuffers(window);
}
// Properly de-allocate all resources once they've outlived their purpose
glDeleteVertexArrays(1, &VAO);
glDeleteBuffers(1, &VBO);
glDeleteBuffers(1, &EBO);
// Terminate GLFW, clearing any resources allocated by GLFW.
glfwTerminate();
return 0;
}
int main(int argc, char** argv)
{
if (!glfwInit()) // 初始化glfw库
{
std::cout << "Error::GLFW could not initialize GLFW!" << std::endl;
return -1;
}
// 开启OpenGL 3.3 core profile
std::cout << "Start OpenGL core profile version 3.3" << std::endl;
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);
// 创建窗口
GLFWwindow* window = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT,
"Demo of geometry shader", NULL, NULL);
if (!window)
{
std::cout << "Error::GLFW could not create winddow!" << std::endl;
glfwTerminate();
std::system("pause");
return -1;
}
// 创建的窗口的context指定为当前context
glfwMakeContextCurrent(window);
// 注册窗口键盘事件回调函数
glfwSetKeyCallback(window, key_callback);
// 注册鼠标事件回调函数
glfwSetCursorPosCallback(window, mouse_move_callback);
// 注册鼠标滚轮事件回调函数
glfwSetScrollCallback(window, mouse_scroll_callback);
// 鼠标捕获 停留在程序内
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
// 初始化GLEW 获取OpenGL函数
glewExperimental = GL_TRUE; // 让glew获取所有拓展函数
GLenum status = glewInit();
if (status != GLEW_OK)
{
std::cout << "Error::GLEW glew version:" << glewGetString(GLEW_VERSION)
<< " error string:" << glewGetErrorString(status) << std::endl;
glfwTerminate();
std::system("pause");
return -1;
}
// 设置视口参数
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
//Section1 顶点属性数据
// 指定顶点属性数据 顶点位置
GLfloat points[] = {
-0.5f, 0.5f, 1.0f, 0.0f, 0.0f, // 左上
0.5f, 0.5f, 0.0f, 1.0f, 0.0f, // 右上
0.5f, -0.5f, 0.0f, 0.0f, 1.0f, // 右下
-0.5f, -0.5f, 1.0f, 1.0f, 0.0f // 左下
};
// Section2 准备缓存对象
GLuint pointVAOId, pointVBOId;
glGenVertexArrays(1, &pointVAOId);
glGenBuffers(1, &pointVBOId);
glBindVertexArray(pointVAOId);
glBindBuffer(GL_ARRAY_BUFFER, pointVBOId);
glBufferData(GL_ARRAY_BUFFER, sizeof(points), points, GL_STATIC_DRAW);
// 顶点位置数据
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
5 * sizeof(GL_FLOAT), (GLvoid*)0);
glEnableVertexAttribArray(0);
// 顶点颜色数据
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE,
5 * sizeof(GL_FLOAT), (GLvoid*)(2 * sizeof(GL_FLOAT)));
glEnableVertexAttribArray(1);
glBindVertexArray(0);
// Section3 准备着色器程序
Shader shader("scene.vertex", "scene.frag", "scene.gs"); // 添加了几何着色器
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glDepthFunc(GL_LESS);
glEnable(GL_PROGRAM_POINT_SIZE); // 启用在顶点着色器中指定点的大小
// 开始游戏主循环
while (!glfwWindowShouldClose(window))
{
GLfloat currentFrame = (GLfloat)glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
glfwPollEvents(); // 处理例如鼠标 键盘等事件
do_movement(); // 根据用户操作情况 更新相机属性
// 设置colorBuffer颜色
glClearColor(0.18f, 0.04f, 0.14f, 1.0f);
// 清除colorBuffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// 先绘制场景 演示几何着色器时 暂不使用MVP矩阵了
shader.use();
glBindVertexArray(pointVAOId);
glDrawArrays(GL_POINTS, 0, 4);
glBindVertexArray(0);
glUseProgram(0);
glfwSwapBuffers(window); // 交换缓存
}
// 释放资源
glDeleteVertexArrays(1, &pointVAOId);
glDeleteBuffers(1, &pointVBOId);
glfwTerminate();
return 0;
}
void GLFW_App::pollEvents()
{
glfwPollEvents();
}
int main(){
Ui0 ui;
FilterUiDrag filtdrag;
if ( !glfwInit() ) {
printf( "failed to initialize GLFW.\n" );
return -1;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
int _width = 500;
int _height = 500;
auto _window = glfwCreateWindow( _width, _height, "Render Window", nullptr, nullptr );
if ( !_window ) {
return -1;
}
glfwMakeContextCurrent( _window );
if (gl3wInit()) {
printf( "failed to initialize OpenGL\n" );
return -1;
}
print_info_opengl();
glEnable( GL_DEPTH_TEST );
glClearColor( 0, 0, 0, 1.0 );
std::cout << "InitGL::init invoked." << std::endl;
ui.register_resource_to_monitor( _window );
std::list<IUi::character> characters{};
std::cout << "mouse coordinates" << std::endl;
while(1){
glfwPollEvents();
ui.get_characters( characters );
for( auto & i : characters ){
if( IUi::input_type::MOUSE == i._input_type ){
if( IUi::mouse_character::LEFT == i._mouse_character ){
std::cout << "mouse L ";
}
else if( IUi::mouse_character::RIGHT == i._mouse_character ){
std::cout << "mouse R ";
}
else if( IUi::mouse_character::MID == i._mouse_character ){
std::cout << "mouse M ";
}
if( IUi::state::DOWN == i._state ){
std::cout << "down" << std::endl;
}
else if( IUi::state::UP == i._state ){
std::cout << "up" << std::endl;
}
}
else if( IUi::input_type::KEY == i._input_type ){
std::cout << "key " << i._key_character << " ";
if( IUi::state::DOWN == i._state ){
std::cout << "down" << std::endl;
if( 'Q' == i._key_character ){
std::cout << "exit" << std::endl;
return 0;
}
}
else if( IUi::state::UP == i._state ){
std::cout << "up" << std::endl;
}
else if( IUi::state::REPEAT == i._state ){
std::cout << "repeat" << std::endl;
}
}else{ //MOUSE_COORD
// std::cout << "x: " << i._coordinate._a << ", y: " << i._coordinate._b << std::endl;
}
}
std::list<drag_coordinate> drag{};
filtdrag.process( drag, characters );
for( auto & i : drag ){
if( IUi::mouse_character::LEFT == i._mouse_character ){
std::cout << "drag: left, ";
}else if( IUi::mouse_character::RIGHT == i._mouse_character ){
std::cout << "drag: right, ";
}else if( IUi::mouse_character::MID == i._mouse_character ){
std::cout << "drag: mid, ";
}else {
continue;
// std::cout << "drag: other, ";
}
std::cout << "x: " << i._coordinate_delta._a << ", y: " << i._coordinate_delta._b << std::endl;
}
characters.clear();
glfwSwapBuffers( _window );
std::this_thread::sleep_for(std::chrono::milliseconds(25));
}
return 0;
}
void Window::pollEvents() {
glfwPollEvents();
}
//The main function
int Main::start() {
//Init
if (init() == -1) {
fprintf(stderr, "Could not initialise the program\n");
return -1;
}
//Create the scene
Scene scene = Scene(window);
Camera* camera = scene.getCamera();
camera->setFOV(45);
//Create the loaders
ModelLoader loader = ModelLoader();
TextureLoader textureLoader = TextureLoader();
//Create the models
Model texturedModel = loader.loadToVao_OBJ_Textured("models/cube.obj", "textures/cube.bmp", glm::vec3(-3, 0, -5));
Model monkey = loader.loadToVao_OBJ("models/suzanne.obj", glm::vec3(0, 0, -5));
monkey.texture(textureLoader.loadBMP_custom("textures/suzanne texture.bmp"));
monkey.setReflectivity(0.0);
//Create an array of the same entities and add them to the scene
std::vector<Entity> cubes;
std::vector<glm::vec3> positions;
int numOfCubes = 1000;
Cube cubeTemp = Cube();
//Create the positions array
for (int i = 0; i < numOfCubes; i++) {
positions.insert(positions.end(), glm::vec3(rand() % 100, rand() % 100, rand() % 100));
}
//Generate cloned cubes and put them at different positions
cubes = cubeTemp.cloneEntity(positions);
//Add the cubes to the entity map
for (int i = 0; i < cubes.size(); i++) {
scene.addEntity(&cubes[i]);
}
//Add the models to the scene
scene.addModel(texturedModel);
scene.addModel(monkey);
//Create the onclick function
auto onClick = []() {
exit(0);
};
//Create the UIs
UIButton button = UIButton(0.06f, 0.05f, glm::vec2(1, -1), window, onClick);
button.setAlignment(UIButton::ALIGN_BOTTOM_RIGHT);
button.texture(textureLoader.loadBMP_custom("textures/Exit.bmp"));
UIElement* ui = &button;
//Add the UI
scene.addPauseUI(ui);
//Main loop
while (!window.shouldClose()) {
//Run the scene
scene.run();
//Run the UI
//Swap the buffers and poll events
glfwSwapBuffers(window.getWindow());
glfwPollEvents();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
//Terminate glfw
glfwTerminate();
return 0;
}
void Window::update()
{
glfwPollEvents();
glfwSwapBuffers(m_Window);
}