debug chapterHEADmaster

13 files changed, 0 insertions, 533 deletions

diff --git a/pbr/2.1.2.ibl_irradiance/background.frag b/pbr/2.1.2.ibl_irradiance/background.frag
deleted file mode 100644
index e3891eb..0000000
--- a/pbr/2.1.2.ibl_irradiance/background.frag
+++ /dev/null
@@ -1,17 +0,0 @@
-#version 330 core
-
-in vert_t {
-	vec3 position;
-} vert;
-
-out vec4 frag_color;
-
-uniform samplerCube cubemap;
-
-void main(void)
-{
-	vec3 color = texture(cubemap, vert.position).rgb;
-	color /= color + vec3(1.0);
-	color = pow(color, vec3(1.0 / 2.2));
-	frag_color = vec4(color, 1.0);
-}
diff --git a/pbr/2.1.2.ibl_irradiance/background.vert b/pbr/2.1.2.ibl_irradiance/background.vert
deleted file mode 100644
index 25b9778..0000000
--- a/pbr/2.1.2.ibl_irradiance/background.vert
+++ /dev/null
@@ -1,19 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 position;
-
-out vert_t {
-	vec3 position;
-} vert;
-
-uniform mat4 projection;
-uniform mat4 view;
-
-void main(void)
-{
-	vert.position = position;
-	
-	mat4 rotate_view = mat4(mat3(view));
-	vec4 clip_position = projection * rotate_view * vec4(position, 1.0);
-	gl_Position = clip_position.xyww;
-}
diff --git a/pbr/2.1.2.ibl_irradiance/build.sh b/pbr/2.1.2.ibl_irradiance/build.sh
deleted file mode 100755
index fdecd76..0000000
--- a/pbr/2.1.2.ibl_irradiance/build.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-. ../../config
-TARGET='ibl_irradiance'
-set -x
-gcc -o $TARGET $CFLAGS $INCLUDE $LFLAGS $TARGET.c $LIBS
diff --git a/pbr/2.1.2.ibl_irradiance/convolution.frag b/pbr/2.1.2.ibl_irradiance/convolution.frag
deleted file mode 100644
index 69ce8af..0000000
--- a/pbr/2.1.2.ibl_irradiance/convolution.frag
+++ /dev/null
@@ -1,33 +0,0 @@
-#version 330 core
-
-in vert_t {
-	vec3 position;
-} vert;
-
-out vec4 frag_color;
-
-uniform samplerCube cubemap;
-
-const float PI = 3.14159265359;
-
-void main(void)
-{
-	vec3 normal = normalize(vert.position);
-	vec3 up = vec3(0.0, 1.0, 0.0);
-	vec3 right = cross(up, normal);
-	up = cross(normal, right);
-
-	vec3 irradiance = vec3(0.0);
-	float delta = 0.025;
-	int nsamples = 0;
-	for (float phi = 0.0; phi < 2.0 * PI; phi += delta) {
-		for (float theta = 0.0; theta < 0.5 * PI; theta += delta) {
-			vec3 tangent = vec3(sin(theta) * cos(phi), sin(theta) * sin(phi), cos(theta));
-			vec3 v = tangent.x * right + tangent.y * up + tangent.z * normal;
-			irradiance += texture(cubemap, v).rgb * cos(theta) * sin(theta);
-			nsamples++;
-		}
-	}
-	irradiance *= PI / nsamples;
-	frag_color = vec4(irradiance, 1.0);
-}
diff --git a/pbr/2.1.2.ibl_irradiance/convolution.vert b/pbr/2.1.2.ibl_irradiance/convolution.vert
deleted file mode 100644
index 8f8862e..0000000
--- a/pbr/2.1.2.ibl_irradiance/convolution.vert
+++ /dev/null
@@ -1,17 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 position;
-
-out vert_t {
-	vec3 position;
-} vert;
-
-uniform mat4 projection;
-uniform mat4 view;
-
-void main(void)
-{
-	gl_Position = projection * view * vec4(position, 1.0);
-
-	vert.position = position;
-}
diff --git a/pbr/2.1.2.ibl_irradiance/cubemap.frag b/pbr/2.1.2.ibl_irradiance/cubemap.frag
deleted file mode 100644
index 349347a..0000000
--- a/pbr/2.1.2.ibl_irradiance/cubemap.frag
+++ /dev/null
@@ -1,25 +0,0 @@
-#version 330 core
-
-in vert_t {
-	vec3 position;
-} vert;
-
-out vec4 frag_color;
-
-uniform sampler2D map;
-
-const vec2 inv_atan = vec2(0.1591, 0.3183);
-vec2 sample_spherical_map(vec3 v)
-{
-	vec2 uv = vec2(atan(v.z, v.x), asin(v.y));
-	uv *= inv_atan;
-	uv += 0.5;
-	return uv;
-}
-
-void main(void)
-{
-	vec2 uv = sample_spherical_map(normalize(vert.position));
-	vec3 color = texture(map, uv).rgb;
-	frag_color = vec4(color, 1.0);
-}
diff --git a/pbr/2.1.2.ibl_irradiance/cubemap.vert b/pbr/2.1.2.ibl_irradiance/cubemap.vert
deleted file mode 100644
index 8f8862e..0000000
--- a/pbr/2.1.2.ibl_irradiance/cubemap.vert
+++ /dev/null
@@ -1,17 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 position;
-
-out vert_t {
-	vec3 position;
-} vert;
-
-uniform mat4 projection;
-uniform mat4 view;
-
-void main(void)
-{
-	gl_Position = projection * view * vec4(position, 1.0);
-
-	vert.position = position;
-}
diff --git a/pbr/2.1.2.ibl_irradiance/hdr.frag b/pbr/2.1.2.ibl_irradiance/hdr.frag
deleted file mode 100644
index 01650ae..0000000
--- a/pbr/2.1.2.ibl_irradiance/hdr.frag
+++ /dev/null
@@ -1,18 +0,0 @@
-#version 330 core
-
-in vert_t {
-	vec2 tex_coords;
-} vert;
-
-out vec4 frag_color;
-
-uniform sampler2D colorbuffer;
-
-void main(void)
-{
-	const float gamma = 2.2;
-	vec3 color = vec3(texture(colorbuffer, vert.tex_coords));
-	color /= color + vec3(1.0);
-	color = pow(color, vec3(1.0 / gamma));
-	frag_color = vec4(color, 1.0);
-}
diff --git a/pbr/2.1.2.ibl_irradiance/hdr.vert b/pbr/2.1.2.ibl_irradiance/hdr.vert
deleted file mode 100644
index 1b953d7..0000000
--- a/pbr/2.1.2.ibl_irradiance/hdr.vert
+++ /dev/null
@@ -1,17 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 position;
-layout(location = 2) in vec2 tex_coords;
-
-out vert_t {
-	vec2 tex_coords;
-} vert;
-
-uniform mat4 model;
-
-void main(void)
-{
-	gl_Position = model * vec4(position, 1.0);
-
-	vert.tex_coords = tex_coords;
-}
diff --git a/pbr/2.1.2.ibl_irradiance/ibl_irradiance b/pbr/2.1.2.ibl_irradiance/ibl_irradiance
deleted file mode 100755
index 4561ae2..0000000
--- a/pbr/2.1.2.ibl_irradiance/ibl_irradiance
+++ /dev/null
diff --git a/pbr/2.1.2.ibl_irradiance/ibl_irradiance.c b/pbr/2.1.2.ibl_irradiance/ibl_irradiance.c
deleted file mode 100644
index e6f1390..0000000
--- a/pbr/2.1.2.ibl_irradiance/ibl_irradiance.c
+++ /dev/null
@@ -1,230 +0,0 @@
-#include "GL/glew.h"
-#include "GLFW/glfw3.h"
-#include "common.h"
-
-int main(void)
-{
-	state_t state = init_state(1600, 800);
-
-	init_glfw(&state);
-	init_gl();
-	glDepthFunc(GL_LEQUAL);
-
-	/* meshes */
-	Mesh *cube = mesh_load_obj(state.arena, "../../data/models/cube.obj");
-	Mesh *sphere = mesh_load_obj(state.arena, "../../data/models/sphere.obj");
-	Mesh *quad = mesh_gen_quad(state.arena);
-
-	/* shaders */
-	add_shader("pbr.vert",        "pbr.frag",        0);
-	add_shader("hdr.vert",        "hdr.frag",        0);
-	add_shader("cubemap.vert",    "cubemap.frag",    0);
-	add_shader("background.vert", "background.frag", 0);
-	add_shader("convolution.vert", "convolution.frag", 0);
-
-	light_t lights[4] = {
-		{{-10.0f, 0.0f, 20.0f}, {300.0f, 300.0f, 300.0f}},
-		{{-5.0f,  0.0f, 20.0f}, {300.0f, 300.0f, 300.0f}},
-		{{ 5.0f,  0.0f, 20.0f}, {300.0f, 300.0f, 300.0f}},
-		{{ 10.0f, 0.0f, 20.0f}, {300.0f, 300.0f, 300.0f}},
-	};
-
-	/* textures */
-	U32 hdr_texture = load_hdr_texture("../../data/textures/loigerwiesen.hdr");;
-
-	/* framebuffers */
-	U32 hdr_fbo, hdr_colorbuffer, hdr_rbo;
-	glGenFramebuffers(1, &hdr_fbo);
-	glGenTextures(1, &hdr_colorbuffer);
-	glBindTexture(GL_TEXTURE_2D, hdr_colorbuffer);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, state.width, state.height, 0, GL_RGBA, GL_FLOAT, 0);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-	glGenRenderbuffers(1, &hdr_rbo);
-	glBindRenderbuffer(GL_RENDERBUFFER, hdr_rbo);
-	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, state.width, state.height);
-	glBindFramebuffer(GL_FRAMEBUFFER, hdr_fbo);
-	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, hdr_colorbuffer, 0);
-	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, hdr_rbo);
-	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
-		die("failed to create framebuffer");
-	glBindRenderbuffer(GL_RENDERBUFFER, 0);
-	glBindTexture(GL_TEXTURE_2D, 0);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	U32 capture_fbo, capture_rbo;
-	glGenFramebuffers(1, &capture_fbo);
-	glGenRenderbuffers(1, &capture_rbo);
-	glBindFramebuffer(GL_FRAMEBUFFER, capture_fbo);
-	glBindRenderbuffer(GL_RENDERBUFFER, capture_rbo);
-	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, 512, 512);
-	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, capture_rbo);
-	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
-		die("failed to create framebuffer");
-	glBindRenderbuffer(GL_RENDERBUFFER, 0);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	U32 cubemap;
-	glGenTextures(1, &cubemap);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
-	for (U32 i = 0; i < 6; i++)
-		glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, 512, 512, 0, GL_RGB, GL_FLOAT, 0);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
-	MAT4 capture_projection = perspective(90.0f, 1.0f, 0.1f, 10.0f);
-	V3F capture_origin = {0};
-	MAT4 capture_views[6] = {
-		look_at(capture_origin, v3f( 1.0f,  0.0f,  0.0f), v3f(0.0f, -1.0f,  0.0f)),
-		look_at(capture_origin, v3f(-1.0f,  0.0f,  0.0f), v3f(0.0f, -1.0f,  0.0f)),
-		look_at(capture_origin, v3f( 0.0f,  1.0f,  0.0f), v3f(0.0f,  0.0f,  1.0f)),
-		look_at(capture_origin, v3f( 0.0f, -1.0f,  0.0f), v3f(0.0f,  0.0f, -1.0f)),
-		look_at(capture_origin, v3f( 0.0f,  0.0f,  1.0f), v3f(0.0f, -1.0f,  0.0f)),
-		look_at(capture_origin, v3f( 0.0f,  0.0f, -1.0f), v3f(0.0f, -1.0f,  0.0f)),
-	};
-
-	glBindFramebuffer(GL_FRAMEBUFFER, capture_fbo);
-	U32 shader = find_shader("cubemap");
-	if (!shader) die("waht");
-	glUseProgram(shader);
-	shader_set_mat4fv(shader, "projection", capture_projection);
-	glActiveTexture(GL_TEXTURE0);
-	glBindTexture(GL_TEXTURE_2D, hdr_texture);
-
-	glViewport(0, 0, 512, 512);
-	for (U32 i = 0; i < 6; i++) {
-		shader_set_mat4fv(shader, "view", capture_views[i]);
-		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, cubemap, 0);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		mesh_draw(cube);
-	}
-	glUseProgram(0);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	U32 irradiance_map;
-	glGenTextures(1, &irradiance_map);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, irradiance_map);
-	for (U32 i = 0; i < 6; i++)
-		glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB16F, 32, 32, 0, GL_RGB, GL_FLOAT, 0);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-
-	glBindFramebuffer(GL_FRAMEBUFFER, capture_fbo);
-	glBindRenderbuffer(GL_RENDERBUFFER, capture_rbo);
-	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, 32, 32);
-	glBindRenderbuffer(GL_RENDERBUFFER, 0);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	glBindFramebuffer(GL_FRAMEBUFFER, capture_fbo);
-	shader = find_shader("convolution");
-	glUseProgram(shader);
-	shader_set_mat4fv(shader, "projection", capture_projection);
-	glActiveTexture(GL_TEXTURE0);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
-	glViewport(0, 0, 32, 32);
-	for (U32 i = 0; i < 6; i++) {
-		shader_set_mat4fv(shader, "view", capture_views[i]);
-		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, irradiance_map, 0);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-		mesh_draw(cube);
-	}
-	glUseProgram(0);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	glViewport(0, 0, state.width, state.height);
-
-	F32 time = 0;
-
-	while (!glfwWindowShouldClose(state.window)) {
-		handle_glfw_events(state.window, &state.input);
-		F32 dt = lock_framerate(60);
-		fps_info(dt, 10);
-
-		/* update */
-		update_camera_first_person(&state.camera, &state.input, dt, 2.0f);
-		F32 limit = 4.0f;
-		for (U32 i = 0; i < (sizeof(lights) / sizeof(lights[0])); i++)
-			lights[i].position.y = sinf(time + i) * limit;
-		time += dt;
-
-		/* render */
-		F32 ar = (F32)state.width / (F32)state.height;
-		MAT4 projection = camera_persp(state.camera, ar);
-		MAT4 view = get_view_matrix(&state.camera);
-
-		glClearColor(0.16f, 0.16f, 0.16f, 1.0f);
-
-		glBindFramebuffer(GL_FRAMEBUFFER, hdr_fbo);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-		shader = find_shader("pbr");
-		glUseProgram(shader);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_CUBE_MAP, irradiance_map);
-		shader_set_mat4fv(shader, "projection", projection);
-		shader_set_mat4fv(shader, "view", view);
-		shader_set_3fv(shader, "camera", state.camera.pos);
-		shader_set_3fv(shader, "color", v3f(0.04, 0.04, 0.04));
-		shader_set_1f(shader, "ao", 1.0f);
-		for (U32 i = 0; i < (sizeof(lights) / sizeof(lights[0])); i++) {
-			char str[512];
-			snprintf(str, 512, "lights[%d].position", i);
-			shader_set_3fv(shader, str, lights[i].position);
-			snprintf(str, 512, "lights[%d].color", i);
-			shader_set_3fv(shader, str, lights[i].color);
-		}
-		S32 rows = 7;
-		S32 cols = 7;
-		F32 offset = 3.0f;
-		for (S32 row = 0; row < rows; row++) {
-			shader_set_1f(shader, "metallic", (F32)row / (F32)rows);
-			for (S32 col = 0; col < cols; col++) {
-				shader_set_1f(shader, "roughness", clamp(0.05f, (F32)col / (F32)cols, 1.0f));
-				V3F pos = {(col - cols / 2.0f) * offset, (row - rows / 2.0f) * offset, 0.0f};
-				MAT4 model = mat4_make_translate(pos);
-				shader_set_mat4fv(shader, "model", model);
-				mesh_draw(sphere);
-			}
-		}
-
-		for (U32 i = 0; i < (sizeof(lights) / sizeof(lights[0])); i++) {
-			MAT4 model = mat4_make_scale(v3f(0.5f, 0.5f, 0.5f));
-			model = mat4_translate(model, lights[i].position);
-			shader_set_mat4fv(shader, "model", model);
-			mesh_draw(sphere);
-		}
-
-		glUseProgram(0);
-
-		shader = find_shader("background");
-		glUseProgram(shader);
-		shader_set_mat4fv(shader, "projection", projection);
-		shader_set_mat4fv(shader, "view", view);
-		glActiveTexture(GL_TEXTURE0);
-		glBindTexture(GL_TEXTURE_CUBE_MAP, irradiance_map);
-		mesh_draw(cube);
-		glUseProgram(0);
-
-		glBindFramebuffer(GL_FRAMEBUFFER, 0);
-		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-		shader = find_shader("hdr");
-		if (!shader) die("failed to find hdr shader!");
-		glUseProgram(shader);
-		glBindTexture(GL_TEXTURE_2D, hdr_colorbuffer);
-		shader_set_mat4fv(shader, "model", mat4_identity());
-		mesh_draw(quad);
-		glUseProgram(0);
-
-		glfwSwapBuffers(state.window);
-	}
-
-	return 0;
-}
diff --git a/pbr/2.1.2.ibl_irradiance/pbr.frag b/pbr/2.1.2.ibl_irradiance/pbr.frag
deleted file mode 100644
index 88cf01d..0000000
--- a/pbr/2.1.2.ibl_irradiance/pbr.frag
+++ /dev/null
@@ -1,114 +0,0 @@
-#version 330 core
-
-in vert_t {
-	vec3 position;
-	vec3 normal;
-} vert;
-
-out vec4 frag_color;
-
-uniform vec3 camera;
-
-uniform vec3 color;
-uniform float metallic;
-uniform float roughness;
-uniform float ao;
-
-uniform samplerCube irradiance_map;
-
-struct light_t {
-	vec3 position;
-	vec3 color;
-};
-
-const int light_count = 4;
-uniform light_t lights[light_count];
-
-const float PI = 3.14159265358; 
-
-vec3 fresnel_shlick(float costheta, vec3 f0)
-{
-	return f0 + (1.0 - f0) * pow(1.0 - costheta, 5.0);
-}
-
-float distribution_ggx(vec3 n, vec3 h, float roughness)
-{
-	float a = roughness * roughness;
-	float a2 = a * a;
-	float ndoth = max(dot(n, h), 0.0);
-	float ndoth2 = ndoth * ndoth;
-
-	float num = a2;
-	float denom = (ndoth2 * (a2 - 1.0) + 1.0);
-	denom = PI * denom * denom;
-
-	return num / denom;
-}
-
-float geometry_shlick_ggx(float ndotv, float roughness)
-{
-	float r = roughness + 1.0;
-	float k = r * r / 8.0;
-
-	float num = ndotv;
-	float denom = ndotv * (1.0 - k) + k;
-	
-	return num / denom;
-}
-
-float geometry_smith(vec3 n, vec3 v, vec3 l, float roughness)
-{
-	float ndotv = max(dot(n, v), 0.0);
-	float ndotl = max(dot(n, l), 0.0);
-	float ggx2 = geometry_shlick_ggx(ndotv, roughness);
-	float ggx1 = geometry_shlick_ggx(ndotl, roughness);
-
-	return ggx1 * ggx2;
-}
-
-void main(void)
-{
-	vec3 n = vert.normal;
-	vec3 v = normalize(camera - vert.position);
-
-	vec3 f0 = vec3(0.04);
-	f0 = mix(f0, color, metallic);
-
-	vec3 lo = vec3(0.0);
-	for (int i = 0; i < light_count; i++) {
-		vec3 l = normalize(lights[i].position - vert.position);
-		vec3 h = normalize(v + l);
-		float ndotv = max(dot(n, v), 0.0);
-		float ndotl = max(dot(n, l), 0.0);
-
-		float distance = length(lights[i].position - vert.position);
-		float attenuation = 1.0 / (distance * distance);
-
-		vec3 radiance = lights[i].color * attenuation;
-
-		vec3 f = fresnel_shlick(max(dot(h, v), 0.0), f0);
-
-		float ndf = distribution_ggx(n, h, roughness);
-		float g = geometry_smith(n, v, l, roughness);
-
-		vec3 numerator = ndf * g * f;
-		float denominator = 4.0 * ndotv * ndotl;
-		vec3 specular = numerator / max(denominator, 0.001);
-
-		vec3 ks = f;
-		vec3 kd = vec3(1.0) - ks;
-
-		kd *= 1.0 - metallic;
-
-		lo += (kd * color / PI + specular) * radiance * ndotl;
-	}
-	
-	vec3 ks = fresnel_shlick(max(dot(n, v), 0.0), f0);
-	vec3 kd = 1.0 - ks;
-	kd *= 1.0 - metallic;
-	vec3 irradiance = texture(irradiance_map, n).rgb;
-	vec3 diffuse = irradiance * color;
-	vec3 ambient = kd * diffuse * ao;
-
-	frag_color = vec4(ambient + lo, 1.0);
-}
diff --git a/pbr/2.1.2.ibl_irradiance/pbr.vert b/pbr/2.1.2.ibl_irradiance/pbr.vert
deleted file mode 100644
index e6e3800..0000000
--- a/pbr/2.1.2.ibl_irradiance/pbr.vert
+++ /dev/null
@@ -1,21 +0,0 @@
-#version 330 core
-
-layout(location = 0) in vec3 position;
-layout(location = 1) in vec3 normal;
-
-out vert_t {
-	vec3 position;
-	vec3 normal;
-} vert;
-
-uniform mat4 projection;
-uniform mat4 view;
-uniform mat4 model;
-
-void main(void)
-{
-	gl_Position = projection * view * model * vec4(position, 1.0);
-
-	vert.position = vec3(model * vec4(position, 1.0));
-	vert.normal = normalize(mat3(transpose(inverse(model))) * normal);
-}