restructure

1 files changed, 208 insertions, 0 deletions

diff --git a/advanced_opengl/10.antialiasing/anti_aliasing_msaa.c b/advanced_opengl/10.antialiasing/anti_aliasing_msaa.c
new file mode 100644
index 0000000..9fcb645
--- /dev/null
+++ b/advanced_opengl/10.antialiasing/anti_aliasing_msaa.c
@@ -0,0 +1,208 @@
+#include "GL/glew.h"
+#include "GLFW/glfw3.h"
+
+#include "pwyazh.h"
+
+#include "pwyazh_GL.h"
+
+#include "common.h"
+
+#include <unistd.h>
+
+static S32 global_width = 1024, global_height = 768;
+static Input global_input;
+
+void
+key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    switch (action)
+    {
+        case GLFW_PRESS: {
+            switch (key)
+            {
+                case GLFW_KEY_D: {
+                    global_input.move_right.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_W: {
+                    global_input.move_forward.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_A: {
+                    global_input.move_left.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_S: {
+                    global_input.move_backward.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_E: {
+                    global_input.move_up.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_Q: {
+                    global_input.move_down.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_SPACE: {
+                    global_input.jump.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_RIGHT: {
+                    global_input.action_right.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_LEFT: {
+                    global_input.action_left.state = KeyState_PRESS;
+                } break;
+                case GLFW_KEY_ESCAPE: {
+                    global_input.exit.state = KeyState_PRESS;
+                } break;
+            }
+        } break;
+        
+        case GLFW_RELEASE: {
+            switch (key)
+            {
+                case GLFW_KEY_D: {
+                    global_input.move_right.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_W: {
+                    global_input.move_forward.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_A: {
+                    global_input.move_left.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_S: {
+                    global_input.move_backward.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_E: {
+                    global_input.move_up.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_Q: {
+                    global_input.move_down.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_SPACE: {
+                    global_input.jump.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_RIGHT: {
+                    global_input.action_right.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_LEFT: {
+                    global_input.action_left.state = KeyState_RELEASE;
+                } break;
+                case GLFW_KEY_ESCAPE: {
+                    global_input.exit.state = KeyState_RELEASE;
+                } break;
+            }
+        } break;
+    }
+}
+
+void
+window_resize_callback(GLFWwindow* window, int width, int height)
+{
+    global_width = width;
+    global_height = height;
+    glViewport(0, 0, global_width, global_height);
+}
+
+int
+main(void)
+{
+    GLFWwindow *window;
+    Arena *arena = 0;
+    F32 target_fps, target_spf,
+    last_time, dt;
+    MAT4 projection, view, model;
+    V3F camera_pos;
+    F32 camera_speed, fovx, near, far;
+    U32 color_shader;
+    
+    if (glfwInit() == GLFW_FALSE)
+    {
+        fprintf(stderr, "[ERROR] 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);
+    glfwWindowHint(GLFW_SAMPLES, 4);
+    window = glfwCreateWindow(global_width, global_height, "Anti Aliasing (MSAA)", 0, 0);
+    if (!window)
+    {
+        fprintf(stderr, "[ERROR] Failed to create window.\n");
+        glfwTerminate();
+        return(1);
+    }
+    
+    glfwMakeContextCurrent(window);
+    
+    glfwSetKeyCallback(window, key_callback);
+    glfwSetWindowSizeCallback(window, window_resize_callback);
+    
+    if (glewInit() != GLEW_OK)
+    {
+        fprintf(stderr, "[ERROR] Failed to initialize glew.\n");
+        glfwTerminate();
+        return(1);
+    }
+    
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_MULTISAMPLE);
+    
+    arena = arena_alloc(Megabytes(64));
+    
+    Mesh *cube_mesh = mesh_load_obj(arena, "../../data/models/cube.obj");
+    color_shader = create_shader_program("shaders/color.vs",
+                                         "shaders/color.fs");
+    
+    target_fps = 60.0f;
+    target_spf = 1.0f/target_fps;
+    
+    camera_pos = v3f(0.0f, 0.0f, 3.0f);
+    camera_speed = 2.0f;
+    fovx = 90.0f;
+    near = 0.1f;
+    far = 1000.0f;
+    
+    last_time = glfwGetTime();
+    
+    while (!glfwWindowShouldClose(window))
+    {
+        glfwPollEvents();
+        
+        /* NOTE(pryazha): Update */
+        if (key_is_pressed(global_input.exit))
+            glfwSetWindowShouldClose(window, GLFW_TRUE);
+        
+        camera_pos = update_camera_orbital(global_input,
+                                           camera_pos, v3f_zero(),
+                                           dt, camera_speed);
+        
+        projection = perspective(fovx, (F32)global_width/(F32)global_height, near, far);
+        view = look_at(camera_pos, v3f_zero(), v3f(0.0f, 1.0f, 0.0f));
+        model = mat4_identity();
+        
+        input_update_last_state(&global_input);
+        
+        /* NOTE(pryazha): Render */
+        glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        glUseProgram(color_shader);
+        shader_set_mat4fv(color_shader, "projection", projection);
+        shader_set_mat4fv(color_shader, "view", view);
+        shader_set_mat4fv(color_shader, "model", model);
+        mesh_draw(cube_mesh);
+        
+        glfwSwapBuffers(window);
+        
+        F32 elapsed = glfwGetTime()-last_time;
+        if (elapsed < target_spf)
+        {
+            U32 sleep_time = (U32)(target_spf-elapsed);
+            if (sleep_time > 0)
+                sleep(sleep_time);
+        }
+        F32 current_time = glfwGetTime();
+        dt = current_time-last_time;
+        last_time = current_time;
+    }
+    
+    arena_release(arena);
+    glfwTerminate();
+    return(0);
+}