From 26e22da8f14a8deb5bd7879d97a71eb128321afc Mon Sep 17 00:00:00 2001
From: Mikulas Florek <mikulas.florek@gamedev.sk>
Date: Sat, 10 Oct 2020 21:20:21 +0200
Subject: [PATCH] cleanup

---
 data/pipelines/local_light.shd | 134 -------------------------------
 data/pipelines/sky.lua         |  33 --------
 data/pipelines/sky.shd         | 142 ---------------------------------
 3 files changed, 309 deletions(-)
 delete mode 100644 data/pipelines/local_light.shd
 delete mode 100644 data/pipelines/sky.lua
 delete mode 100644 data/pipelines/sky.shd

diff --git a/data/pipelines/local_light.shd b/data/pipelines/local_light.shd
deleted file mode 100644
index 35269340c..000000000
--- a/data/pipelines/local_light.shd
+++ /dev/null
@@ -1,134 +0,0 @@
-include "pipelines/common.glsl"
-
-
-------------------
-
-vertex_shader [[
-	layout(location = 0) in vec3 a_position;
-	layout(location = 1) in vec4 i_rot;
-	layout(location = 2) in vec3 i_pos;
-	layout(location = 3) in float i_radius;
-	layout(location = 4) in float i_attn;
-	layout(location = 5) in vec3 i_color;
-	layout(location = 6) in vec3 i_dir;
-	layout(location = 7) in float i_fov;
-	
-	layout(location = 0) out float v_radius;
-	layout(location = 1) out vec3 v_center;
-	layout(location = 2) out vec4 v_rot;
-	layout(location = 3) out float v_attn;
-	layout(location = 4) out vec3 v_color;
-	layout(location = 5) out vec3 v_dir;
-	layout(location = 6) out float v_fov;
-	
-	void main()
-	{
-		v_center = i_pos;
-		v_rot = i_rot;
-		v_radius = i_radius;
-		v_attn = i_attn;
-		v_color = i_color;
-		v_dir = i_dir;
-		v_fov = i_fov;
-		vec3 pos = rotateByQuat(i_rot, a_position * i_radius);
-		pos += i_pos;
-		gl_Position = u_camera_projection * u_camera_view * vec4(pos, 1);
-	}
-]]
-
----------------------
-
-
-fragment_shader [[
-	layout(location = 0) out vec4 o_color;
-	
-	layout(location = 0) in float v_radius;
-	layout(location = 1) in vec3 v_center;
-	layout(location = 2) in vec4 v_rot;
-	layout(location = 3) in float v_attn;
-	layout(location = 4) in vec3 v_color;
-	layout(location = 5) in vec3 v_dir;
-	layout(location = 6) in float v_fov;
-	
-	layout (binding=0) uniform sampler2D u_gbuffer0;
-	layout (binding=1) uniform sampler2D u_gbuffer1;
-	layout (binding=2) uniform sampler2D u_gbuffer2;
-	layout (binding=3) uniform sampler2D u_gbuffer_depth;
-		
-	void main()
-	{
-		/*float f0 = 0.04;
-		
-		vec2 screen_uv = gl_FragCoord.xy / u_framebuffer_size;
-		vec3 wpos = getViewPosition(u_gbuffer_depth, u_camera_inv_view_projection, screen_uv);
-		
-		vec4 gbuffer1_val = texture(u_gbuffer1, screen_uv * 0.5 + 0.5);
-		vec4 gbuffer2_val = texture(u_gbuffer2, screen_uv * 0.5 + 0.5);
-		vec3 normal = normalize(gbuffer1_val.xyz * 2 - 1);
-		vec4 albedo = texture(u_gbuffer0, screen_uv * 0.5 + 0.5);
-		float roughness = albedo.w;
-		float metallic = gbuffer1_val.w;
-
-		vec3 light_dir = normalize(v_center - wpos);
-		
-		PBR_ComputeDirectLight(normal, light_dir, view, v_color_attn.rgb, f0, roughness, diff, spec);
-		
-		vec4 r = v_rot;
-		r.w = -r.w;
-		vec3 lpos = rotateByQuat(r, wpos - v_center);
-		
-		float dist = length(lpos);
-		float attn = pow(max(0, 1 - dist / v_radius), v_attn);		
-		if (dist > v_radius) discard;
-		
-		o_color = vec4(attn, attn, attn, 1);*/
-		float f0 = 0.04;
-
-		vec2 screen_uv = gl_FragCoord.xy / u_framebuffer_size;
-		vec4 gbuffer1_val = texture(u_gbuffer1, screen_uv);
-		vec4 gbuffer2_val = texture(u_gbuffer2, screen_uv);
-		vec3 N = normalize(gbuffer1_val.xyz * 2 - 1);
-		vec4 albedo = texture(u_gbuffer0, screen_uv);
-		float roughness = albedo.w;
-		float metallic = gbuffer1_val.w;
-
-		vec3 wpos = getViewPosition(u_gbuffer_depth, u_camera_inv_view_projection, screen_uv);
-		
-		vec3 diff;
-		vec3 spec;
-		vec3 V = normalize(-wpos);
-		vec3 lpos = v_center - wpos.xyz;
-		vec3 L = normalize(lpos);
-		vec3 direct_light = PBR_ComputeDirectLight(albedo.rgb, N, L, V, v_color.rgb, roughness, metallic);
-		float dist = length(lpos);
-		float attn = pow(max(0, 1 - dist / v_radius), v_attn);		
-		if(v_fov < 3.14159) {
-			float cosDir = dot(normalize(v_dir), normalize(L));
-			float cosCone = cos(v_fov * 0.5);
-
-			if(cosDir < cosCone) discard;
-			attn *= (cosDir - cosCone) / (1 - cosCone);	
-		}/**/
-		/*vec3 lp = v_pos_radius.xyz - wpos;
-		float dist = length(lp);
-		float attn = pow(max(0, 1 - dist / v_pos_radius.w), v_color_attn.w);		
-		if(v_dir_fov.w < 3.14159)
-		{
-			float cosDir = dot(normalize(v_dir_fov.xyz), normalize(light_dir));
-			float cosCone = cos(v_dir_fov.w * 0.5);
-
-			if(cosDir < cosCone)
-				discard;
-			attn *= (cosDir - cosCone) / (1 - cosCone);	
-		}
-		vec4 specular_color = (f0 - f0 * metallic) + albedo * metallic;
-		vec4 diffuse_color = albedo - albedo * metallic;
-		
-		o_color.xyz = attn * (diff * diffuse_color.rgb + spec * specular_color.rgb);
-		o_color.w = 1;*/
-		
-		o_color.rgb = direct_light * attn;
-		//o_color.rgb = vec3(saturate(wpos));
-		o_color.a = 1;
-	}
-]]
\ No newline at end of file
diff --git a/data/pipelines/sky.lua b/data/pipelines/sky.lua
deleted file mode 100644
index a9d9e9961..000000000
--- a/data/pipelines/sky.lua
+++ /dev/null
@@ -1,33 +0,0 @@
-enabled = true
-function postprocess(env, transparent_phase, hdr_buffer, gbuffer0, gbuffer1, gbuffer_depth, shadowmap)
-	if not enabled then return hdr_buffer end
-	if transparent_phase ~= "pre" then return hdr_buffer end
-	env.beginBlock("sky")
-	if env.procedural_sky_shader == nil then
-		env.procedural_sky_shader = env.preloadShader("pipelines/sky.shd")
-	end
-	env.setRenderTargets(hdr_buffer, gbuffer_depth)
-	local state = {
-		stencil_write_mask = 0,
-		stencil_func = env.STENCIL_NOT_EQUAL,
-		stencil_ref = 1,
-		stencil_mask = 0xff,
-		stencil_sfail = env.STENCIL_KEEP,
-		stencil_zfail = env.STENCIL_KEEP,
-		stencil_zpass = env.STENCIL_REPLACE,
-		depth_write = false,
-		depth_test = false
-	}
-	env.drawArray(0, 4, env.procedural_sky_shader, {}, {}, {}, state)
-	env.endBlock()
-	return hdr_buffer
-end
-
-function awake()
-	_G["postprocesses"] = _G["postprocesses"] or {}
-	_G["postprocesses"]["sky"] = postprocess
-end
-
-function onDestroy()
-	_G["postprocesses"]["sky"] = nil
-end
\ No newline at end of file
diff --git a/data/pipelines/sky.shd b/data/pipelines/sky.shd
deleted file mode 100644
index 684e7eb93..000000000
--- a/data/pipelines/sky.shd
+++ /dev/null
@@ -1,142 +0,0 @@
-include "pipelines/common.glsl"
-
-vertex_shader [[
-	
-	layout (location = 0) out vec2 v_uv;
-	
-	void main()
-	{
-		gl_Position = fullscreenQuad(gl_VertexID, v_uv);
-	}
-]]
-
-
-fragment_shader [[
-	layout (location = 0) in vec2 v_uv;
-	layout (location = 0) out vec4 o_color;
-
-	vec3 air_color = vec3(0.18867780436772762, 0.4978442963618773, 0.6616065586417131);
-	
-	float phase(float alpha, float g)
-	{
-		float a = 3.0*(1.0-g*g);
-		float b = 2.0*(2.0+g*g);
-		float c = 1.0+alpha*alpha;
-		float d = pow(1.0+g*g-2.0*g*alpha, 1.5);
-		return (a/b)*(c/d);
-	}
-
-
-	float atmospheric_depth(vec3 position, vec3 dir)
-	{
-		float a = dot(dir, dir);
-		float b = 2.0*dot(dir, position);
-		float c = dot(position, position)-1.0;
-		float det = b*b-4.0*a*c;
-		float detSqrt = sqrt(det);
-		float q = (-b - detSqrt)/2.0;
-		float t1 = c/q;
-		return t1;
-	}
-
-
-	float horizon_extinction(vec3 position, vec3 dir, float radius)
-	{
-		float u = dot(dir, -position);
-		if(u<0.0){
-			return 1.0;
-		}
-		vec3 near = position + u*dir;
-		if(length(near) < radius){
-			return 0.0;
-		}
-		else{
-			vec3 v2 = normalize(near)*radius - position;
-			float diff = acos(dot(normalize(v2), dir));
-			return smoothstep(0.0, 1.0, pow(diff*2.0, 3.0));
-		}
-	}
-
-	vec3 absorb(float dist, vec3 color, float factor)
-	{
-		return color-color*pow(air_color.rgb, vec3(factor/dist));
-	}
-
-	vec3 getWorldNormal(vec2 frag_coord)
-	{
-		float z = 1;
-		#ifdef _ORIGIN_BOTTOM_LEFT
-			vec4 posProj = vec4(frag_coord * 2 - 1, z, 1.0);
-		#else
-			vec4 posProj = vec4(vec2(frag_coord.x, 1-frag_coord.y) * 2 - 1, z, 1.0);
-		#endif
-		vec4 wpos = u_camera_inv_view_projection * posProj;
-		wpos /= wpos.w;
-		vec3 view = (u_camera_inv_view * vec4(0.0, 0.0, 0.0, 1.0)).xyz - wpos.xyz;
-
-		return -normalize(view);
-	}
-	
-	float getFogFactorSky(float cam_height, vec3 eye_dir, float fog_density, float fog_bottom, float fog_height) 
-	{
-		if(eye_dir.y == 0) return 1.0;
-		float to_top = max(0, (fog_bottom + fog_height) - cam_height);
-
-		float avg_y = (fog_bottom + fog_height + cam_height) * 0.5;
-		float avg_density = fog_density * clamp(1 - (avg_y - fog_bottom) / fog_height, 0, 1);
-		float res = exp(-pow(avg_density * to_top / eye_dir.y, 2));
-		res =  1 - clamp(res - (1-min(0.2, eye_dir.y)*5), 0, 1);
-		return res;
-	}
-
-	void main()
-	{
-		const vec3 strength = vec3(0.028, 0.139, 0.0264);
-		const vec3 brightness = vec3(5, 0.15, 200);
-		const float rayleigh_collection_power = 0.51f;
-		const float mie_collection_power = 0.39f;
-		const float mie_distribution = 0.13f;
-
-		const float sun_size = 150;
-		const float surface_height = 0.993;
-		const float intensity = 1.8;
-		const int step_count = 4;
-		
-		vec3 lightdir = u_light_direction.xyz;
-		vec3 eyedir = getWorldNormal(v_uv);
-		
-		float alpha = dot(eyedir, lightdir);
-		
-		float rayleigh_factor = phase(alpha, -0.01) * brightness.x;
-		float mie_factor = phase(alpha, mie_distribution) * brightness.y;
-		float spot = smoothstep(0.0, sun_size, phase(alpha, 0.9995)) * brightness.z;
-		
-		vec3 eye_position = vec3(0.0, surface_height, 0.0);
-		float eye_depth = atmospheric_depth(eye_position, eyedir);
-		float step_length = eye_depth / float(step_count);
-		
-		float eye_extinction = horizon_extinction(eye_position, eyedir, surface_height - 0.15);
-		
-		vec3 rayleigh_collected = vec3(0.0, 0.0, 0.0);
-		vec3 mie_collected = vec3(0.0, 0.0, 0.0);
-		
-		for (int i = 0; i < step_count; ++i) {
-			float sample_distance = step_length * float(i);
-			vec3 position = eye_position + eyedir * sample_distance;
-			float extinction = horizon_extinction(position, lightdir, surface_height - 0.35);
-			float sample_depth = atmospheric_depth(position, lightdir);
-			vec3 influx = absorb(sample_depth, vec3(intensity), strength.x) * extinction;
-			rayleigh_collected += absorb(sample_distance, air_color.rgb * influx, strength.y);
-			mie_collected += absorb(sample_distance, influx, strength.z);
-		}
-		
-		rayleigh_collected = (rayleigh_collected * eye_extinction * pow(eye_depth, rayleigh_collection_power))/float(step_count);
-		mie_collected = (mie_collected * eye_extinction * pow(eye_depth, mie_collection_power))/float(step_count);
-		
-		vec3 color = vec3(spot * mie_collected + mie_factor * mie_collected + rayleigh_factor * rayleigh_collected);
-		
-		float fog_factor = getFogFactorSky(u_camera_world_pos.y, eyedir, u_fog_params.x, u_fog_params.y, u_fog_params.z);
-		o_color.xyz = mix(color.rgb, u_fog_color.rgb, fog_factor);
-		o_color.w = 1;
-	}
-]]
\ No newline at end of file