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Diffstat (limited to 'advanced_lighting/3.2.point_shadows')
-rwxr-xr-xadvanced_lighting/3.2.point_shadows/point_shadowsbin1065440 -> 1289368 bytes
-rw-r--r--advanced_lighting/3.2.point_shadows/point_shadows.c620
-rw-r--r--advanced_lighting/3.2.point_shadows/shaders/depth.frag (renamed from advanced_lighting/3.2.point_shadows/shaders/depth.fs)3
-rw-r--r--advanced_lighting/3.2.point_shadows/shaders/depth.geom (renamed from advanced_lighting/3.2.point_shadows/shaders/depth.gs)13
-rw-r--r--advanced_lighting/3.2.point_shadows/shaders/depth.vert (renamed from advanced_lighting/3.2.point_shadows/shaders/depth.vs)3
-rw-r--r--advanced_lighting/3.2.point_shadows/shaders/shadow.frag (renamed from advanced_lighting/3.2.point_shadows/shaders/shadow.fs)6
-rw-r--r--advanced_lighting/3.2.point_shadows/shaders/shadow.vert (renamed from advanced_lighting/3.2.point_shadows/shaders/shadow.vs)7
7 files changed, 259 insertions, 393 deletions
diff --git a/advanced_lighting/3.2.point_shadows/point_shadows b/advanced_lighting/3.2.point_shadows/point_shadows
index c4668ab..452a2a2 100755
--- a/advanced_lighting/3.2.point_shadows/point_shadows
+++ b/advanced_lighting/3.2.point_shadows/point_shadows
Binary files differ
diff --git a/advanced_lighting/3.2.point_shadows/point_shadows.c b/advanced_lighting/3.2.point_shadows/point_shadows.c
index 0f60565..e622f6c 100644
--- a/advanced_lighting/3.2.point_shadows/point_shadows.c
+++ b/advanced_lighting/3.2.point_shadows/point_shadows.c
@@ -1,383 +1,261 @@
-#include "pwyazh.h"
-
#include "GL/glew.h"
#include "GLFW/glfw3.h"
+#include "pwyazh.h"
#include "pwyazh_GL.h"
#include "common.h"
-static S32 global_screen_width = 800, global_screen_height = 600;
-static Input global_input;
-static B32 first_mouse = 1;
-
-void
-glfw_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_UP: {
- global_input.action_up.state = KeyState_PRESS;
- } break;
- case GLFW_KEY_LEFT: {
- global_input.action_left.state = KeyState_PRESS;
- } break;
- case GLFW_KEY_DOWN: {
- global_input.action_down.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_UP: {
- global_input.action_up.state = KeyState_RELEASE;
- } break;
- case GLFW_KEY_LEFT: {
- global_input.action_left.state = KeyState_RELEASE;
- } break;
- case GLFW_KEY_DOWN: {
- global_input.action_down.state = KeyState_RELEASE;
- } break;
- case GLFW_KEY_ESCAPE: {
- global_input.exit.state = KeyState_RELEASE;
- } break;
- }
- } break;
- }
-}
-
-void
-resize_callback(GLFWwindow* window, int width, int height)
-{
- global_screen_width = width;
- global_screen_height = height;
- /* glViewport(0, 0, global_screen_width, global_screen_height); */
-}
-
-void
-error_callback(int error, const char *desc)
-{
- fprintf(stderr, "[ERROR] GLFW: %s\n", desc);
-}
-
-void
-cursor_pos_callback(GLFWwindow* window, double xpos, double ypos)
-{
- if (first_mouse)
- {
- global_input.last_mouse_pos = v2f(xpos, ypos);
- first_mouse = 0;
- }
- global_input.mouse_offset = v2f(global_input.mouse_offset.x+((F32)xpos-global_input.last_mouse_pos.x),
- global_input.mouse_offset.y+((F32)ypos-global_input.last_mouse_pos.y));
- global_input.last_mouse_pos = v2f((F32)xpos, (F32)ypos);
-}
-
-
-void
-render_scene(U32 shader, Mesh *cube)
+void render_scene(U32 shader, Mesh *cube)
{
- MAT4 model;
-
- model = mat4_identity();
- model = mat4_make_scale(v3f(5.0f, 5.0f, 5.0f));
- shader_set_mat4fv(shader, "model", model);
- glDisable(GL_CULL_FACE);
- shader_set_1i(shader, "reverse_normals", 1);
- mesh_draw(cube);
- shader_set_1i(shader, "reverse_normals", 0);
- glEnable(GL_CULL_FACE);
-
- model = mat4_identity();
- model = mat4_make_scale(v3f(0.5f, 0.5f, 0.5f));
- model = mat4_translate(model, v3f(0.0f, 1.5f, 0.0f));
- shader_set_mat4fv(shader, "model", model);
- mesh_draw(cube);
-
- model = mat4_identity();
- model = mat4_make_scale(v3f(0.5f, 0.5f, 0.5f));
- model = mat4_translate(model, v3f(2.0f, 0.0f, 1.0f));
- shader_set_mat4fv(shader, "model", model);
- mesh_draw(cube);
-
- model = mat4_identity();
- model = mat4_make_scale(v3f(0.25f, 0.25f, 0.25f));
- model = mat4_rotate_angles(model, v3f(60.0f, 0.0f, 0.0f));
- model = mat4_translate(model, v3f(-1.0f, 0.0f, 2.0f));
- shader_set_mat4fv(shader, "model", model);
- mesh_draw(cube);
+ MAT4 model;
+
+ model = mat4_identity();
+ model = mat4_make_scale(v3f(5.0f, 5.0f, 5.0f));
+ shader_set_mat4fv(shader, "model", model);
+ glDisable(GL_CULL_FACE);
+ shader_set_1i(shader, "reverse_normals", 1);
+ mesh_draw(cube);
+ shader_set_1i(shader, "reverse_normals", 0);
+ glEnable(GL_CULL_FACE);
+
+ model = mat4_identity();
+ model = mat4_make_scale(v3f(0.5f, 0.5f, 0.5f));
+ model = mat4_translate(model, v3f(0.0f, 1.5f, 0.0f));
+ shader_set_mat4fv(shader, "model", model);
+ mesh_draw(cube);
+
+ model = mat4_identity();
+ model = mat4_make_scale(v3f(0.5f, 0.5f, 0.5f));
+ model = mat4_translate(model, v3f(2.0f, 0.0f, 1.0f));
+ shader_set_mat4fv(shader, "model", model);
+ mesh_draw(cube);
+
+ model = mat4_identity();
+ model = mat4_make_scale(v3f(0.25f, 0.25f, 0.25f));
+ model = mat4_rotate_angles(model, v3f(60.0f, 0.0f, 0.0f));
+ model = mat4_translate(model, v3f(-1.0f, 0.0f, 2.0f));
+ shader_set_mat4fv(shader, "model", model);
+ mesh_draw(cube);
}
-int
-main(void)
+int main(void)
{
- GLFWwindow *window;
- Arena *arena;
- State state;
- Mesh *cube;
- F64 time, last_time;
- V3F light_pos;
- MAT4 shadow_transforms[6];
- MAT4 proj, view;
-
- glfwSetErrorCallback(error_callback);
-
- if (glfwInit() == GLFW_FALSE)
- return(1);
-
- glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
- glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
- glfwWindowHint(GLFW_SAMPLES, 4);
- window = glfwCreateWindow(global_screen_width, global_screen_height, "Point shadows", 0, 0);
- if (!window)
- goto error;
-
- glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
-
- glfwSetKeyCallback(window, glfw_key_callback);
- glfwSetWindowSizeCallback(window, resize_callback);
- glfwSetCursorPosCallback(window, cursor_pos_callback);
-
- glfwMakeContextCurrent(window);
-
- if (glewInit() != GLEW_OK)
- goto error;
-
- glEnable(GL_DEPTH_TEST);
- glEnable(GL_CULL_FACE);
-
- /* NOTE(pryazha): Init */
- arena = arena_alloc(Megabytes(64));
-
- state.camera = (Camera){
- .pos = v3f(0.0f, 1.0f, 3.0f),
- .fovx = 100.0f,
- .near = 0.1f,
- .far = 100.0f,
- .yaw = 0.0f,
- .pitch = 0.0f
- };
- V3F camera_dp = v3f_zero();
- /* light_pos = v3f(-2.0f, 4.0f, -2.0f); */
- light_pos = v3f_zero();
-
- /* NOTE(pryazha): Meshes */
- cube = mesh_load_obj(arena, "../../data/models/cube.obj");
-
- 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
- };
- U32 quad_vao, vbo;
- 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);
-
- /* NOTE(pryazha): Shaders */
- U32 depth_shader = create_shader_program_geom("shaders/depth.vs",
- "shaders/depth.fs",
- "shaders/depth.gs");
- U32 shadow_shader = create_shader_program("shaders/shadow.vs", "shaders/shadow.fs");
-
- glUseProgram(shadow_shader);
- shader_set_1i(shadow_shader, "diffuse_texture", 0);
- shader_set_1i(shadow_shader, "depth_cubemap", 1);
- glUseProgram(0);
-
- U32 wood_texture = load_texture_gamma("../../data/textures/wood.png", 0);
-
- /* NOTE(pryazha): Depth framebuffer init */
- U32 depth_cubemap_fbo, depth_cubemap;
- U32 shadow_width = 1024, shadow_height = 1024;
- glGenFramebuffers(1, &depth_cubemap_fbo);
- glGenTextures(1, &depth_cubemap);
- glBindTexture(GL_TEXTURE_CUBE_MAP, depth_cubemap);
- for (U32 cubemap_side = 0; cubemap_side < 6; ++cubemap_side)
- glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X+cubemap_side, 0, GL_DEPTH_COMPONENT,
- shadow_width, shadow_height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0);
- glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
- glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
- glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER);
- glBindFramebuffer(GL_FRAMEBUFFER, depth_cubemap_fbo);
- glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depth_cubemap, 0);
- glDrawBuffer(GL_NONE);
- glReadBuffer(GL_NONE);
- if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
- fprintf(stderr, "[ERROR]: Failed to complete depth map framebuffer.\n");
- glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
- last_time = glfwGetTime();
-
- while (!glfwWindowShouldClose(window))
- {
- glfwPollEvents();
- if (key_first_press(global_input.exit))
- glfwSetWindowShouldClose(window, GLFW_TRUE);
-
- /* NOTE(pryazha): For now it's easier to write all of the logic in the main loop */
- /* NOTE(pryazha): Update */
- F32 x, y, z, angular_speed, radius;
- V3F camera_dv;
-
- camera_dv = get_dv_camera_first_person(&global_input, &state.camera,
- 1.0f, state.dt);
- if (key_is_pressed(global_input.action_up))
- camera_dv = v3f_scalef(camera_dv, 3.0f);
- camera_dp = v3f_add(camera_dp, camera_dv);
- camera_dp = v3f_scalef(camera_dp, 0.8f);
- state.camera.pos = v3f_add(state.camera.pos, camera_dp);
-
- F32 sensitivity = 0.1f;
- global_input.mouse_offset = v2f_scalef(global_input.mouse_offset, sensitivity);
- state.camera.yaw += global_input.mouse_offset.x;
- state.camera.pitch += global_input.mouse_offset.y;
- if (state.camera.pitch > 89.0f)
- state.camera.pitch = 89.0f;
- if (state.camera.pitch < -89.0f)
- state.camera.pitch = -89.0f;
-
- input_update_last_state(&global_input);
-
- angular_speed = 1.0f;
- radius = 4.0f;
- x = f32_sin(time*angular_speed)*radius;
- y = f32_sin(time*angular_speed)*f32_sin(time*angular_speed)*radius;
- z = f32_cos(time*angular_speed)*radius;
-
- light_pos = v3f(x, y, z);
-
- /* NOTE(pryazha): Render */
-
- /* NOTE(pryazha): Render the depth cubemap */
- F32 fovx, aspect, near, far;
- fovx = 90.0f;
- aspect = (F32)shadow_width/(F32)shadow_height;
- near = 1.0f;
- far = 25.0f;
- proj = perspective(fovx, aspect, near, far);
- shadow_transforms[0] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 1.0f, 0.0f, 0.0f)), v3f(0.0f, -1.0f, 0.0f))); /* right */
- shadow_transforms[1] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f(-1.0f, 0.0f, 0.0f)), v3f(0.0f, -1.0f, 0.0f))); /* left */
- shadow_transforms[2] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 1.0f, 0.0f)), v3f(0.0f, 0.0f, 1.0f))); /* top */
- shadow_transforms[3] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, -1.0f, 0.0f)), v3f(0.0f, 0.0f, -1.0f))); /* bottom */
- shadow_transforms[4] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 0.0f, 1.0f)), v3f(0.0f, -1.0f, 0.0f))); /* near */
- shadow_transforms[5] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 0.0f, -1.0f)), v3f(0.0f, -1.0f, 0.0f))); /* far */
- glViewport(0, 0, shadow_width, shadow_height);
- glBindFramebuffer(GL_FRAMEBUFFER, depth_cubemap_fbo);
- glClear(GL_DEPTH_BUFFER_BIT);
- glUseProgram(depth_shader);
- shader_set_1f(depth_shader, "far", far);
- shader_set_3fv(depth_shader, "light_pos", light_pos);
- for (U32 i = 0; i < 6; ++i)
- {
- char uniform_name[256];
- snprintf(uniform_name, 256, "shadow_transforms[%d]", i);
- shader_set_mat4fv(depth_shader, uniform_name, shadow_transforms[i]);
- }
- render_scene(depth_shader, cube);
- glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
- /* NOTE(pryazha): Render the scene as normal */
- glViewport(0, 0, global_screen_width, global_screen_height);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glUseProgram(shadow_shader);
-
- aspect = (F32)global_screen_width/(F32)global_screen_height;
- proj = perspective(state.camera.fovx, aspect, state.camera.near, state.camera.far);
- view = get_view_matrix(&state.camera);
-
- shader_set_mat4fv(shadow_shader, "projection", proj);
- shader_set_mat4fv(shadow_shader, "view", view);
- shader_set_3fv(shadow_shader, "light_pos", light_pos);
- shader_set_3fv(shadow_shader, "view_pos", state.camera.pos);
- shader_set_1f(shadow_shader, "far", far);
-
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(GL_TEXTURE_2D, wood_texture);
- glActiveTexture(GL_TEXTURE1);
- glBindTexture(GL_TEXTURE_CUBE_MAP, depth_cubemap);
- render_scene(shadow_shader, cube);
-
- glfwSwapBuffers(window);
-
- time = glfwGetTime();
- state.dt = time-last_time;
- last_time = time;
- }
-
- glfwTerminate();
- return(0);
-
- error:
- glfwTerminate();
- return(1);
+ GLFWwindow *window;
+ Arena *arena;
+ State state;
+ Input input;
+ F64 time, last_time;
+ V3F light_pos;
+ MAT4 shadow_transforms[6];
+ MAT4 proj, view;
+ S32 screen_width, screen_height;
+
+ glfwSetErrorCallback(error_callback);
+
+ if (glfwInit() == GLFW_FALSE)
+ return(1);
+
+ screen_width = 800;
+ screen_height = 600;
+
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+ glfwWindowHint(GLFW_SAMPLES, 4);
+ window = glfwCreateWindow(screen_width, screen_height, "Point shadows", 0, 0);
+ if (!window)
+ goto error;
+
+ glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+
+ glfwMakeContextCurrent(window);
+
+ if (glewInit() != GLEW_OK)
+ goto error;
+
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_CULL_FACE);
+
+ /* NOTE(pryazha): Init */
+ arena = arena_alloc(Megabytes(64));
+
+ state.camera = (Camera){
+ .pos = v3f(0.0f, 1.0f, 3.0f),
+ .fovx = 100.0f,
+ .near = 0.1f,
+ .far = 100.0f,
+ .yaw = 0.0f,
+ .pitch = 0.0f
+ };
+ V3F camera_dp = v3f_zero();
+ /* light_pos = v3f(-2.0f, 4.0f, -2.0f); */
+ light_pos = v3f_zero();
+
+ /* NOTE(pryazha): Meshes */
+ Mesh *cube = mesh_load_obj(arena, "../../data/models/cube.obj");
+
+ 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
+ };
+ U32 quad_vao, vbo;
+ 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);
+
+ /* NOTE(pryazha): Shaders */
+ U32 depth_shader = create_shader_program_geom("shaders/depth.vert",
+ "shaders/depth.frag",
+ "shaders/depth.geom");
+ U32 shadow_shader = create_shader_program("shaders/shadow.vert",
+ "shaders/shadow.frag");
+
+ glUseProgram(shadow_shader);
+ shader_set_1i(shadow_shader, "diffuse_texture", 0);
+ shader_set_1i(shadow_shader, "depth_cubemap", 1);
+ glUseProgram(0);
+
+ U32 wood_texture = load_texture_gamma("../../data/textures/wood.png", 0);
+
+ /* NOTE(pryazha): Depth framebuffer init */
+ U32 depth_cubemap_fbo, depth_cubemap;
+ U32 shadow_width = 1024, shadow_height = 1024;
+ glGenFramebuffers(1, &depth_cubemap_fbo);
+ glGenTextures(1, &depth_cubemap);
+ glBindTexture(GL_TEXTURE_CUBE_MAP, depth_cubemap);
+ for (U32 cubemap_side = 0; cubemap_side < 6; ++cubemap_side)
+ glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X+cubemap_side, 0, GL_DEPTH_COMPONENT,
+ shadow_width, shadow_height, 0, GL_DEPTH_COMPONENT, GL_FLOAT, 0);
+ glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+ glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+ glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER);
+ glBindFramebuffer(GL_FRAMEBUFFER, depth_cubemap_fbo);
+ glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depth_cubemap, 0);
+ glDrawBuffer(GL_NONE);
+ glReadBuffer(GL_NONE);
+ if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
+ fprintf(stderr, "[ERROR]: Failed to complete depth map framebuffer.\n");
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ last_time = glfwGetTime();
+
+ while (!glfwWindowShouldClose(window)) {
+ glfwPollEvents();
+
+ /* NOTE(pryazha): For now it's easier to write all of the logic in the main loop */
+ /* NOTE(pryazha): Update */
+ F32 x, y, z, angular_speed, radius;
+
+ glfwGetFramebufferSize(window, &screen_width, &screen_height);
+ process_glfw_keyboard(window, &input);
+ process_glfw_mouse_pos(window, &input);
+
+ if (key_first_press(input.exit))
+ glfwSetWindowShouldClose(window, GLFW_TRUE);
+
+ F32 speed = 4.0f;
+ V3F dv = get_dv_camera_first_person(&input, &state.camera,
+ speed, state.dt);
+ if (key_is_pressed(input.action_up))
+ dv = v3f_scalef(dv, 3.0f);
+ camera_dp = v3f_add(camera_dp, dv);
+ camera_dp = v3f_scalef(camera_dp, 0.8f);
+ state.camera.pos = v3f_add(state.camera.pos, camera_dp);
+
+ F32 sensitivity = 0.1f;
+ input.mouse_offset = v2f_scalef(input.mouse_offset, sensitivity);
+ state.camera.yaw += input.mouse_offset.x;
+ state.camera.pitch += input.mouse_offset.y;
+ if (state.camera.pitch > 89.0f)
+ state.camera.pitch = 89.0f;
+ if (state.camera.pitch < -89.0f)
+ state.camera.pitch = -89.0f;
+
+ input_update_last_state(&input);
+
+ angular_speed = 1.0f;
+ radius = 4.0f;
+ x = f32_sin(time*angular_speed)*radius;
+ y = f32_sin(time*angular_speed)*f32_sin(time*angular_speed)*radius;
+ z = f32_cos(time*angular_speed)*radius;
+
+ light_pos = v3f(x, y, z);
+
+ /* NOTE(pryazha): Render */
+
+ /* NOTE(pryazha): Render the depth cubemap */
+ F32 fovx, aspect, near, far;
+ fovx = 90.0f;
+ aspect = (F32)shadow_width/(F32)shadow_height;
+ near = 1.0f;
+ far = 25.0f;
+ proj = perspective(fovx, aspect, near, far);
+ shadow_transforms[0] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 1.0f, 0.0f, 0.0f)), v3f(0.0f, -1.0f, 0.0f))); /* right */
+ shadow_transforms[1] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f(-1.0f, 0.0f, 0.0f)), v3f(0.0f, -1.0f, 0.0f))); /* left */
+ shadow_transforms[2] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 1.0f, 0.0f)), v3f(0.0f, 0.0f, 1.0f))); /* top */
+ shadow_transforms[3] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, -1.0f, 0.0f)), v3f(0.0f, 0.0f, -1.0f))); /* bottom */
+ shadow_transforms[4] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 0.0f, 1.0f)), v3f(0.0f, -1.0f, 0.0f))); /* near */
+ shadow_transforms[5] = mat4_mul(proj, look_at(light_pos, v3f_add(light_pos, v3f( 0.0f, 0.0f, -1.0f)), v3f(0.0f, -1.0f, 0.0f))); /* far */
+ glViewport(0, 0, shadow_width, shadow_height);
+ glBindFramebuffer(GL_FRAMEBUFFER, depth_cubemap_fbo);
+ glClear(GL_DEPTH_BUFFER_BIT);
+ glUseProgram(depth_shader);
+ shader_set_1f(depth_shader, "far", far);
+ shader_set_3fv(depth_shader, "light_pos", light_pos);
+ for (U32 i = 0; i < 6; ++i) {
+ char uniform_name[256];
+ snprintf(uniform_name, 256, "shadow_transforms[%d]", i);
+ shader_set_mat4fv(depth_shader, uniform_name, shadow_transforms[i]);
+ }
+ render_scene(depth_shader, cube);
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ /* NOTE(pryazha): Render the scene as normal */
+ glViewport(0, 0, screen_width, screen_height);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ glUseProgram(shadow_shader);
+
+ aspect = (F32)screen_width/(F32)screen_height;
+ proj = perspective(state.camera.fovx, aspect, state.camera.near, state.camera.far);
+ view = get_view_matrix(&state.camera);
+
+ shader_set_mat4fv(shadow_shader, "proj", proj);
+ shader_set_mat4fv(shadow_shader, "view", view);
+ shader_set_3fv(shadow_shader, "light_pos", light_pos);
+ shader_set_3fv(shadow_shader, "view_pos", state.camera.pos);
+ shader_set_1f(shadow_shader, "far", far);
+
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, wood_texture);
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_CUBE_MAP, depth_cubemap);
+ render_scene(shadow_shader, cube);
+
+ glfwSwapBuffers(window);
+
+ time = glfwGetTime();
+ state.dt = time-last_time;
+ last_time = time;
+ }
+
+ glfwTerminate();
+ return(0);
+
+error:
+ glfwTerminate();
+ return(1);
}
diff --git a/advanced_lighting/3.2.point_shadows/shaders/depth.fs b/advanced_lighting/3.2.point_shadows/shaders/depth.frag
index 88fb9e6..f95c0f8 100644
--- a/advanced_lighting/3.2.point_shadows/shaders/depth.fs
+++ b/advanced_lighting/3.2.point_shadows/shaders/depth.frag
@@ -5,8 +5,7 @@ in vec4 frag_pos;
uniform vec3 light_pos;
uniform float far;
-void
-main(void)
+void main(void)
{
float light_distance = length(frag_pos.xyz-light_pos);
light_distance = light_distance/far;
diff --git a/advanced_lighting/3.2.point_shadows/shaders/depth.gs b/advanced_lighting/3.2.point_shadows/shaders/depth.geom
index 638e2b9..de39788 100644
--- a/advanced_lighting/3.2.point_shadows/shaders/depth.gs
+++ b/advanced_lighting/3.2.point_shadows/shaders/depth.geom
@@ -6,18 +6,11 @@ uniform mat4 shadow_transforms[6];
out vec4 frag_pos;
-void
-main(void)
+void main(void)
{
- for (int face = 0;
- face < 6;
- ++face)
- {
+ for (int face = 0; face < 6; ++face) {
gl_Layer = face;
- for (int vertex = 0;
- vertex < 3;
- ++vertex)
- {
+ for (int vertex = 0; vertex < 3; ++vertex) {
frag_pos = gl_in[vertex].gl_Position;
gl_Position = shadow_transforms[face]*frag_pos;
EmitVertex();
diff --git a/advanced_lighting/3.2.point_shadows/shaders/depth.vs b/advanced_lighting/3.2.point_shadows/shaders/depth.vert
index 37a3484..37ffd1b 100644
--- a/advanced_lighting/3.2.point_shadows/shaders/depth.vs
+++ b/advanced_lighting/3.2.point_shadows/shaders/depth.vert
@@ -3,8 +3,7 @@ layout(location = 0) in vec3 apos;
uniform mat4 model;
-void
-main(void)
+void main(void)
{
gl_Position = model*vec4(apos, 1.0);
}
diff --git a/advanced_lighting/3.2.point_shadows/shaders/shadow.fs b/advanced_lighting/3.2.point_shadows/shaders/shadow.frag
index 6a3a8b0..bb006ca 100644
--- a/advanced_lighting/3.2.point_shadows/shaders/shadow.fs
+++ b/advanced_lighting/3.2.point_shadows/shaders/shadow.frag
@@ -24,8 +24,7 @@ vec3 grid_sampling_disk[20] = vec3[]
vec3(0, 1, 1), vec3( 0, -1, 1), vec3( 0, -1, -1), vec3( 0, 1, -1)
);
-float
-calculate_shadow(vec3 frag_pos)
+float calculate_shadow(vec3 frag_pos)
{
vec3 frag_to_light = frag_pos-light_pos;
/* float closest_depth = texture(depth_cubemap, frag_to_light).r; */
@@ -80,8 +79,7 @@ calculate_shadow(vec3 frag_pos)
return(shadow);
}
-void
-main(void)
+void main(void)
{
vec3 color = texture(diffuse_texture, fs_in.tex_coords).rgb;
vec3 normal = normalize(fs_in.normal);
diff --git a/advanced_lighting/3.2.point_shadows/shaders/shadow.vs b/advanced_lighting/3.2.point_shadows/shaders/shadow.vert
index ac8ee4f..dccaa76 100644
--- a/advanced_lighting/3.2.point_shadows/shaders/shadow.vs
+++ b/advanced_lighting/3.2.point_shadows/shaders/shadow.vert
@@ -9,14 +9,13 @@ out VS_OUT {
vec2 tex_coords;
} vs_out;
-uniform mat4 projection;
+uniform mat4 proj;
uniform mat4 view;
uniform mat4 model;
uniform bool reverse_normals;
-void
-main(void)
+void main(void)
{
vs_out.frag_pos = vec3(model*vec4(apos, 1.0));
if (reverse_normals)
@@ -25,5 +24,5 @@ main(void)
vs_out.normal = mat3(transpose(inverse(model)))*anormal;
vs_out.tex_coords = atex_coords;
- gl_Position = projection*view*vec4(vs_out.frag_pos, 1.0);
+ gl_Position = proj*view*vec4(vs_out.frag_pos, 1.0);
}