restructure

1 files changed, 0 insertions, 422 deletions

diff --git a/framebuffers/framebuffers.c b/framebuffers/framebuffers.c
deleted file mode 100644
index e71c95c..0000000
--- a/framebuffers/framebuffers.c
+++ /dev/null
@@ -1,422 +0,0 @@
-#include "GL/glew.h"
-#include "GLFW/glfw3.h"
-
-#include "pwyazh.h"
-
-#include "common.h"
-
-#include <unistd.h>
-
-#define WIDTH 1024
-#define HEIGHT 768
-
-static V3F camera_pos;
-static F32 dt;
-static Input 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: {
-                    input.move_right.state = KeyState_PRESS;
-                } break;
-                case GLFW_KEY_W: {
-                    input.move_forward.state = KeyState_PRESS;
-                } break;
-                case GLFW_KEY_A: {
-                    input.move_left.state = KeyState_PRESS;
-                } break;
-                case GLFW_KEY_S: {
-                    input.move_backward.state = KeyState_PRESS;
-                } break;
-                case GLFW_KEY_E: {
-                    input.move_up.state = KeyState_PRESS;
-                } break;
-                case GLFW_KEY_Q: {
-                    input.move_down.state = KeyState_PRESS;
-                } break;
-            }
-        } break;
-
-        case GLFW_RELEASE: {
-            switch (key)
-            {
-                case GLFW_KEY_D: {
-                    input.move_right.state = KeyState_RELEASE;
-                } break;
-                case GLFW_KEY_W: {
-                    input.move_forward.state = KeyState_RELEASE;
-                } break;
-                case GLFW_KEY_A: {
-                    input.move_left.state = KeyState_RELEASE;
-                } break;
-                case GLFW_KEY_S: {
-                    input.move_backward.state = KeyState_RELEASE;
-                } break;
-                case GLFW_KEY_E: {
-                    input.move_up.state = KeyState_RELEASE;
-                } break;
-                case GLFW_KEY_Q: {
-                    input.move_down.state = KeyState_RELEASE;
-                } break;
-            }
-        } break;
-    }
-}
-
-int
-main(void)
-{
-    GLFWwindow *window;
-    
-    if (glfwInit() == GLFW_FALSE)
-    {
-        fprintf(stderr, "[ERROR] Failed to initialize glfw.\n");
-        return(1);
-    }
-    
-    glfwWindowHint(GLFW_RESIZABLE, 0);
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
-    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-    window = glfwCreateWindow(WIDTH, HEIGHT, "depth testing", 0, 0);
-    if (!window)
-    {
-        fprintf(stderr, "[ERROR] Failed to create window.\n");
-        glfwTerminate();
-        return(1);
-    }
-    
-    glfwMakeContextCurrent(window);
-    
-    glfwSetKeyCallback(window, key_callback);
-    
-    if (glewInit() != GLEW_OK)
-    {
-        fprintf(stderr, "[ERROR] Failed to initialize glew.\n");
-        glfwTerminate();
-        return(1);
-    }
-    
-    U32 screen_shader = create_shader_program("shaders/screen.vs", "shaders/screen.fs");
-    U32 cube_shader = create_shader_program("shaders/cube.vs", "shaders/cube.fs");
-    U32 marble_texture = load_texture("../data/textures/marble.jpg");
-    U32 metal_texture = load_texture("../data/textures/metal.png");
-    U32 window_texture = load_texture("../data/textures/window.png");
-
-    U32 fbo;
-    glGenFramebuffers(1, &fbo);
-    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
-
-    U32 texture_colorbuffer;
-    glGenTextures(1, &texture_colorbuffer);
-    glBindTexture(GL_TEXTURE_2D, texture_colorbuffer);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, WIDTH, HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glBindTexture(GL_TEXTURE_2D, 0);
-
-    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
-                           texture_colorbuffer, 0);
-
-    U32 rbo;
-    glGenRenderbuffers(1, &rbo);
-    glBindRenderbuffer(GL_RENDERBUFFER, rbo);
-    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, WIDTH, HEIGHT);
-    glBindRenderbuffer(GL_RENDERBUFFER, 0);
-
-    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
-                              GL_RENDERBUFFER, rbo);
-    if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
-        fprintf(stderr, "[ERROR]: Framebuffer is not complete.\n");
-    glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-    F32 a = 0.5f;
-    F32 vertices[] = {
-        -a, -a, -a,  0.0f, 0.0f,
-         a, -a, -a,  1.0f, 0.0f,
-         a,  a, -a,  1.0f, 1.0f,
-         a,  a, -a,  1.0f, 1.0f,
-        -a,  a, -a,  0.0f, 1.0f,
-        -a, -a, -a,  0.0f, 0.0f,
-
-        -a, -a,  a,  0.0f, 0.0f,
-         a, -a,  a,  1.0f, 0.0f,
-         a,  a,  a,  1.0f, 1.0f,
-         a,  a,  a,  1.0f, 1.0f,
-        -a,  a,  a,  0.0f, 1.0f,
-        -a, -a,  a,  0.0f, 0.0f,
- 
-        -a,  a,  a,  1.0f, 0.0f,
-        -a,  a, -a,  1.0f, 1.0f,
-        -a, -a, -a,  0.0f, 1.0f,
-        -a, -a, -a,  0.0f, 1.0f,
-        -a, -a,  a,  0.0f, 0.0f,
-        -a,  a,  a,  1.0f, 0.0f,
-
-         a,  a,  a,  1.0f, 0.0f,
-         a,  a, -a,  1.0f, 1.0f,
-         a, -a, -a,  0.0f, 1.0f,
-         a, -a, -a,  0.0f, 1.0f,
-         a, -a,  a,  0.0f, 0.0f,
-         a,  a,  a,  1.0f, 0.0f,
-
-        -a, -a, -a,  0.0f, 1.0f,
-         a, -a, -a,  1.0f, 1.0f,
-         a, -a,  a,  1.0f, 0.0f,
-         a, -a,  a,  1.0f, 0.0f,
-        -a, -a,  a,  0.0f, 0.0f,
-        -a, -a, -a,  0.0f, 1.0f,
-
-        -a,  a, -a,  0.0f, 1.0f,
-         a,  a, -a,  1.0f, 1.0f,
-         a,  a,  a,  1.0f, 0.0f,
-         a,  a,  a,  1.0f, 0.0f,
-        -a,  a,  a,  0.0f, 0.0f,
-        -a,  a, -a,  0.0f, 1.0f
-    };
-
-    Transform cube_positions[] = {
-        transform_default(),
-        transform_make_translate(v3f(a, 0.0f, -4.0f*a))
-    };
-
-    Transform platform_position =
-        transform_make_scale_translate(v3f(10.0f, 0.2f, 10.0f),
-                                       v3f(0.0f, -(a+(a*0.2f)+0.01f), 0.0f));
-
-    U32 cube_vao, quad_vao, vbo;
-
-    glGenVertexArrays(1, &cube_vao);
-    glBindVertexArray(cube_vao);
-
-    glGenBuffers(1, &vbo);
-    glBindBuffer(GL_ARRAY_BUFFER, vbo);
-    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
-    glEnableVertexAttribArray(0);
-    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5*sizeof(F32), (void *)0);
-    glEnableVertexAttribArray(1);
-    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5*sizeof(F32), (void *)(3*sizeof(F32)));
-    glBindVertexArray(0);
-    
-    F32 quad_vertices[] = {
-        -1.0f, -1.0f, 0.0f,  0.0f, 0.0f,
-         1.0f, -1.0f, 0.0f,  1.0f, 0.0f,
-         1.0f,  1.0f, 0.0f,  1.0f, 1.0f,
-        -1.0f, -1.0f, 0.0f,  0.0f, 0.0f,
-         1.0f,  1.0f, 0.0f,  1.0f, 1.0f,
-        -1.0f,  1.0f, 0.0f,  0.0f, 1.0f
-    };
-    
-    glGenVertexArrays(1, &quad_vao);
-    glBindVertexArray(quad_vao);
-    glGenBuffers(1, &vbo);
-    glBindBuffer(GL_ARRAY_BUFFER, vbo);
-    glBufferData(GL_ARRAY_BUFFER, sizeof(quad_vertices), quad_vertices, GL_STATIC_DRAW);
-    glEnableVertexAttribArray(0);
-    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5*sizeof(F32), (void *)0);
-    glEnableVertexAttribArray(1);
-    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5*sizeof(F32), (void *)(3*sizeof(F32)));
-    glBindVertexArray(0);
-
-    Transform window_transforms[] = {
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(0.0f, 0.0f, a+0.1f)),
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(0.0f, 0.0f, 2.0f)),
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(1.0f, 0.0f, -1.0f)),
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(-2.0f, 0.0f, 0.5f)),
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(-3.0f, 0.0f, -3.0f)),
-        transform_make_scale_translate(v3f(0.5f, 0.5f, 0.5f), v3f(3.0f, 0.0f, 0.2)),
-    };
-
-    F32 angle = 0.0f;
-    for (S32 window_index = 0;
-         window_index < (S32)ArrayCount(window_transforms);
-         ++window_index)
-    {
-        Transform *transform = window_transforms+window_index;
-        *transform = transform_rotate(*transform, v3f(0.0f, angle, 0.0f));
-        angle += 30.0f;
-    }
-    
-    F32 target_fps = 60.0f;
-    F32 target_spf = 1.0f/target_fps;
-    camera_pos = v3f(0.0f, 1.0f, 3.0f);
-    
-    F32 last_time = glfwGetTime();
-
-    while (!glfwWindowShouldClose(window))
-    {
-        glfwPollEvents();
-        
-        /* INFO(pryazha): update */
-        V3F left, up, forward;
-        V3F world_up = v3f(0.0f, 1.0f, 0.0f);
-        
-        forward = v3f_norm(v3f_sub(v3f(0.0f, 0.0f, 0.0f), camera_pos));
-        left = v3f_norm(v3f_cross(world_up, forward));
-        up = v3f_cross(forward, left);
-        
-        V3F dp = v3f_zero();
-        F32 speed = 2.0f;
-        if (key_is_pressed(input.move_right))
-            dp = v3f_add(dp, v3f_scalef(left, -speed*dt));
-        if (key_is_pressed(input.move_forward))
-            dp = v3f_add(dp, v3f_scalef(forward, speed*dt));
-        if (key_is_pressed(input.move_left))
-            dp = v3f_add(dp, v3f_scalef(left, speed*dt));
-        if (key_is_pressed(input.move_backward))
-            dp = v3f_add(dp, v3f_scalef(forward, -speed*dt));
-        if (key_is_pressed(input.move_up))
-            dp = v3f_add(dp, v3f_scalef(up, speed*dt));
-        if (key_is_pressed(input.move_down))
-            dp = v3f_add(dp, v3f_scalef(up, -speed*dt));
-
-        input_update_last_state(&input);
-
-        camera_pos = v3f_add(camera_pos, dp);
-
-        Transform sorted_window_transforms[ArrayCount(window_transforms)];
-        MemoryCopyArray(sorted_window_transforms, window_transforms);
-        for (S32 i = 0; i < (S32)ArrayCount(sorted_window_transforms); ++i) {
-            for (S32 pos_index = 1;
-                 pos_index < (S32)ArrayCount(sorted_window_transforms);
-                 ++pos_index)
-            {
-                F32 distance_left = v3f_length(v3f_sub(sorted_window_transforms[pos_index-1].translate, camera_pos));
-                F32 distance_right = v3f_length(v3f_sub(sorted_window_transforms[pos_index].translate, camera_pos));
-                if (distance_left < distance_right) {
-                    Transform temp = sorted_window_transforms[pos_index];
-                    sorted_window_transforms[pos_index] = sorted_window_transforms[pos_index-1];
-                    sorted_window_transforms[pos_index-1] = temp;
-                }
-            }
-        }
-        
-        /* INFO(pryazha): Render */
-        glBindFramebuffer(GL_FRAMEBUFFER, fbo);
-        glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
-        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-        glEnable(GL_DEPTH_TEST);
-        MAT4 view, projection;
-        view = look_at(camera_pos, v3f(0.0f, 0.0f, 0.0f), v3f(0.0f, 1.0f, 0.0f));
-        projection = perspective(90.0f, (F32)WIDTH/(F32)HEIGHT, 0.1f, 100.0f);
-        glUseProgram(cube_shader);
-        shader_set_mat4fv(cube_shader, "view", view);
-        shader_set_mat4fv(cube_shader, "projection", projection);
-        glBindTexture(GL_TEXTURE_2D, marble_texture);
-        glBindVertexArray(cube_vao);
-        for (S32 transform_index = 0;
-             transform_index < (S32)ArrayCount(cube_positions);
-             ++transform_index)
-        {
-            shader_set_mat4fv(cube_shader, "model", transform_apply(cube_positions[transform_index]));
-            glDrawArrays(GL_TRIANGLES, 0, 36);
-        }
-
-        glBindTexture(GL_TEXTURE_2D, metal_texture);
-        shader_set_mat4fv(cube_shader, "model", transform_apply(platform_position));
-        glDrawArrays(GL_TRIANGLES, 0, 36);
-        glBindVertexArray(0);
-
-        glEnable(GL_BLEND);
-        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-        glUseProgram(cube_shader);
-        glBindTexture(GL_TEXTURE_2D, window_texture);
-        shader_set_mat4fv(cube_shader, "view", view);
-        shader_set_mat4fv(cube_shader, "projection", projection);
-        glBindVertexArray(quad_vao);
-        for (S32 window_index = 0;
-             window_index < (S32)ArrayCount(sorted_window_transforms);
-             ++window_index)
-        {
-            shader_set_mat4fv(cube_shader, "model", transform_apply(sorted_window_transforms[window_index]));
-            glDrawArrays(GL_TRIANGLES, 0, 6);
-        }
-        glBindVertexArray(0);
-        glDisable(GL_BLEND);
-
-        glBindFramebuffer(GL_FRAMEBUFFER, 0);
-        glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
-        glClear(GL_COLOR_BUFFER_BIT);
-        glUseProgram(screen_shader);
-        glDisable(GL_DEPTH_TEST);
-        glBindTexture(GL_TEXTURE_2D, texture_colorbuffer);
-        glBindVertexArray(quad_vao);
-        shader_set_mat4fv(screen_shader, "model", mat4_identity());
-        glDrawArrays(GL_TRIANGLES, 0, 6);
-        glBindVertexArray(0);
-
-        glBindFramebuffer(GL_FRAMEBUFFER, fbo);
-        glClearColor(0.15f, 0.15f, 0.15f, 1.0f);
-        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-        glEnable(GL_DEPTH_TEST);
-        V3F target = v3f_add(camera_pos, v3f_negate(forward));
-        view = look_at(camera_pos, target, v3f(0.0f, 1.0f, 0.0f));
-        glUseProgram(cube_shader);
-        shader_set_mat4fv(cube_shader, "view", view);
-        shader_set_mat4fv(cube_shader, "projection", projection);
-        glBindTexture(GL_TEXTURE_2D, marble_texture);
-        glBindVertexArray(cube_vao);
-        for (S32 transform_index = 0;
-             transform_index < (S32)ArrayCount(cube_positions);
-             ++transform_index)
-        {
-            shader_set_mat4fv(cube_shader, "model", transform_apply(cube_positions[transform_index]));
-            glDrawArrays(GL_TRIANGLES, 0, 36);
-        }
-
-        glBindTexture(GL_TEXTURE_2D, metal_texture);
-        shader_set_mat4fv(cube_shader, "model", transform_apply(platform_position));
-        glDrawArrays(GL_TRIANGLES, 0, 36);
-        glBindVertexArray(0);
-
-        glEnable(GL_BLEND);
-        glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-        glUseProgram(cube_shader);
-        glBindTexture(GL_TEXTURE_2D, window_texture);
-        shader_set_mat4fv(cube_shader, "view", view);
-        shader_set_mat4fv(cube_shader, "projection", projection);
-        glBindVertexArray(quad_vao);
-        for (S32 window_index = 0;
-             window_index < (S32)ArrayCount(sorted_window_transforms);
-             ++window_index)
-        {
-            shader_set_mat4fv(cube_shader, "model", transform_apply(sorted_window_transforms[window_index]));
-            glDrawArrays(GL_TRIANGLES, 0, 6);
-        }
-        glBindVertexArray(0);
-        glDisable(GL_BLEND);
-
-        glBindFramebuffer(GL_FRAMEBUFFER, 0);
-        glUseProgram(screen_shader);
-        glDisable(GL_DEPTH_TEST);
-        glBindTexture(GL_TEXTURE_2D, texture_colorbuffer);
-        glBindVertexArray(quad_vao);
-        MAT4 model = transform_apply(transform_make_scale_translate(v3f(0.3f, 0.3f, 0.3f), v3f(-0.7f, 0.7f, 0.0f)));
-        shader_set_mat4fv(screen_shader, "model", model);
-        glDrawArrays(GL_TRIANGLES, 0, 6);
-        glBindVertexArray(0);
-
-        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;
-    }
-
-    glfwTerminate();
-    return(0);
-}