mirror of
https://gitlab.com/veloren/veloren.git
synced 2024-08-30 18:12:32 +00:00
179 lines
7.2 KiB
GLSL
179 lines
7.2 KiB
GLSL
#version 330 core
|
|
|
|
// https://www.shadertoy.com/view/XdsyWf
|
|
|
|
#include <globals.glsl>
|
|
#include <random.glsl>
|
|
|
|
in vec3 f_pos;
|
|
flat in uint f_pos_norm;
|
|
in vec3 f_col;
|
|
in float f_light;
|
|
|
|
layout (std140)
|
|
uniform u_locals {
|
|
vec3 model_offs;
|
|
float load_time;
|
|
};
|
|
|
|
uniform sampler2D t_waves;
|
|
|
|
out vec4 tgt_color;
|
|
|
|
#include <sky.glsl>
|
|
#include <light.glsl>
|
|
#include <lod.glsl>
|
|
|
|
vec3 warp_normal(vec3 norm, vec3 pos, float time) {
|
|
return normalize(norm
|
|
+ smooth_rand(pos * 1.0, time * 1.0) * 0.05
|
|
+ smooth_rand(pos * 0.25, time * 0.25) * 0.1);
|
|
}
|
|
|
|
float wave_height(vec3 pos) {
|
|
vec3 big_warp = (
|
|
texture(t_waves, fract(pos.xy * 0.03 + tick.x * 0.01)).xyz * 0.5 +
|
|
texture(t_waves, fract(pos.yx * 0.03 - tick.x * 0.01)).xyz * 0.5 +
|
|
vec3(0)
|
|
);
|
|
|
|
vec3 warp = (
|
|
texture(t_noise, fract(pos.yx * 0.1 + tick.x * 0.02)).xyz * 0.3 +
|
|
texture(t_noise, fract(pos.yx * 0.1 - tick.x * 0.02)).xyz * 0.3 +
|
|
vec3(0)
|
|
);
|
|
|
|
float height = (
|
|
(texture(t_noise, pos.xy * 0.03 + big_warp.xy + tick.x * 0.05).y - 0.5) * 1.0 +
|
|
(texture(t_noise, pos.yx * 0.03 + big_warp.yx - tick.x * 0.05).y - 0.5) * 1.0 +
|
|
(texture(t_waves, pos.xy * 0.1 + warp.xy + tick.x * 0.1).x - 0.5) * 0.5 +
|
|
(texture(t_waves, pos.yx * 0.1 + warp.yx - tick.x * 0.1).x - 0.5) * 0.5 +
|
|
(texture(t_noise, pos.yx * 0.3 + warp.xy * 0.5 + tick.x * 0.1).x - 0.5) * 0.2 +
|
|
(texture(t_noise, pos.yx * 0.3 + warp.yx * 0.5 - tick.x * 0.1).x - 0.5) * 0.2 +
|
|
(texture(t_noise, pos.yx * 1.0 + warp.yx * 0.0 - tick.x * 0.1).x - 0.5) * 0.05 +
|
|
0.0
|
|
);
|
|
|
|
return pow(abs(height), 0.5) * sign(height) * 5.5;
|
|
}
|
|
|
|
void main() {
|
|
// First 3 normals are negative, next 3 are positive
|
|
vec3 normals[6] = vec3[](vec3(-1,0,0), vec3(1,0,0), vec3(0,-1,0), vec3(0,1,0), vec3(0,0,-1), vec3(0,0,1));
|
|
|
|
// TODO: last 3 bits in v_pos_norm should be a number between 0 and 5, rather than 0-2 and a direction.
|
|
uint norm_axis = (f_pos_norm >> 30) & 0x3u;
|
|
// Increase array access by 3 to access positive values
|
|
uint norm_dir = ((f_pos_norm >> 29) & 0x1u) * 3u;
|
|
// Use an array to avoid conditional branching
|
|
vec3 f_norm = normals[norm_axis + norm_dir];
|
|
|
|
vec3 cam_to_frag = normalize(f_pos - cam_pos.xyz);
|
|
// vec4 vert_pos4 = view_mat * vec4(f_pos, 1.0);
|
|
// vec3 view_dir = normalize(-vec3(vert_pos4)/* / vert_pos4.w*/);
|
|
vec3 view_dir = -cam_to_frag;
|
|
float frag_dist = length(f_pos - cam_pos.xyz);
|
|
|
|
vec3 b_norm;
|
|
if (f_norm.z > 0.0) {
|
|
b_norm = vec3(1, 0, 0);
|
|
} else if (f_norm.x > 0.0) {
|
|
b_norm = vec3(0, 1, 0);
|
|
} else {
|
|
b_norm = vec3(0, 0, 1);
|
|
}
|
|
vec3 c_norm = cross(f_norm, b_norm);
|
|
|
|
float wave00 = wave_height(f_pos);
|
|
float wave10 = wave_height(f_pos + vec3(0.1, 0, 0));
|
|
float wave01 = wave_height(f_pos + vec3(0, 0.1, 0));
|
|
|
|
float slope = abs(wave00 - wave10) * abs(wave00 - wave01);
|
|
vec3 nmap = vec3(
|
|
-(wave10 - wave00) / 0.1,
|
|
-(wave01 - wave00) / 0.1,
|
|
0.1 / slope
|
|
);
|
|
|
|
nmap = mix(vec3(0, 0, 1), normalize(nmap), min(1.0 / pow(frag_dist, 0.75), 1));
|
|
|
|
vec3 norm = f_norm * nmap.z + b_norm * nmap.x + c_norm * nmap.y;
|
|
|
|
|
|
vec4 _clouds;
|
|
vec3 reflect_ray_dir = reflect(cam_to_frag/*-view_dir*/, norm);
|
|
/* vec4 reflect_ray_dir4 = view_mat * vec4(reflect_ray_dir, 1.0);
|
|
reflect_ray_dir = normalize(vec3(reflect_ray_dir4) / reflect_ray_dir4.w); */
|
|
// vec3 cam_to_frag = normalize(f_pos - cam_pos.xyz);
|
|
vec3 reflect_color = get_sky_color(reflect_ray_dir, time_of_day.x, f_pos, vec3(-100000), 0.25, false, _clouds) * f_light;
|
|
/*const */vec3 water_color = srgb_to_linear(vec3(0.2, 0.5, 1.0));
|
|
|
|
vec3 sun_dir = get_sun_dir(time_of_day.x);
|
|
vec3 moon_dir = get_moon_dir(time_of_day.x);
|
|
float sun_shade_frac = horizon_at(/*f_shadow, f_pos.z, */f_pos, sun_dir);
|
|
float moon_shade_frac = horizon_at(/*f_shadow, f_pos.z, */f_pos, moon_dir);
|
|
float shade_frac = /*1.0;*/sun_shade_frac + moon_shade_frac;
|
|
|
|
const float alpha = 0.255/* / 4.0 / sqrt(2.0)*/;
|
|
const float n2 = 1.3325;
|
|
const float R_s = pow((1.0 - n2) / (1.0 + n2), 2);
|
|
|
|
vec3 k_a = vec3(1.0);
|
|
vec3 k_d = 1.0 * water_color;
|
|
vec3 k_s = R_s * reflect_color;//2.0 * reflect_color;
|
|
|
|
vec3 emitted_light, reflected_light;
|
|
// vec3 light, diffuse_light, ambient_light;
|
|
float point_shadow = shadow_at(f_pos, f_norm);
|
|
vec3 light_frac = /*vec3(1.0);*/light_reflection_factor(f_norm/*vec3(0, 0, 1.0)*/, view_dir, vec3(0, 0, -1.0), vec3(1.0), vec3(R_s), alpha);
|
|
// 0 = 100% reflection, 1 = translucent water
|
|
float passthrough = pow(dot(faceforward(f_norm, f_norm, cam_to_frag/*view_dir*/), -cam_to_frag/*view_dir*/), 0.5);
|
|
|
|
get_sun_diffuse2(norm, /*time_of_day.x*/sun_dir, moon_dir, view_dir, k_a * (shade_frac * 0.5 + light_frac * 0.5), vec3(0.0), /*vec3(f_light * point_shadow)*//*reflect_color*/k_s * f_light * point_shadow * shade_frac, alpha, emitted_light, reflected_light);
|
|
emitted_light *= f_light * point_shadow;
|
|
|
|
vec3 diffuse_light_point = vec3(0.0);
|
|
lights_at(f_pos, norm, view_dir, k_a, vec3(1.0), /*vec3(0.0)*/k_s, alpha, emitted_light, diffuse_light_point);
|
|
|
|
vec3 dump_light = vec3(0.0);
|
|
vec3 specular_light_point = vec3(0.0);
|
|
lights_at(f_pos, norm, view_dir, vec3(0.0), vec3(0.0), vec3(1.0), alpha, dump_light, specular_light_point);
|
|
|
|
float reflected_light_point = length(diffuse_light_point/*.r*/) + f_light * point_shadow;
|
|
reflected_light += k_d * (diffuse_light_point + f_light * point_shadow * shade_frac) + k_s * specular_light_point;
|
|
/* vec3 point_light = light_at(f_pos, norm);
|
|
emitted_light += point_light;
|
|
reflected_light += point_light; */
|
|
|
|
// get_sun_diffuse(norm, time_of_day.x, light, diffuse_light, ambient_light, 0.0);
|
|
// diffuse_light *= f_light * point_shadow;
|
|
// ambient_light *= f_light * point_shadow;
|
|
// vec3 point_light = light_at(f_pos, norm);
|
|
// light += point_light;
|
|
// diffuse_light += point_light;
|
|
// reflected_light += point_light;
|
|
// vec3 surf_color = srgb_to_linear(vec3(0.2, 0.5, 1.0)) * light * diffuse_light * ambient_light;
|
|
vec3 surf_color = illuminate(water_color * emitted_light, reflected_light);
|
|
|
|
float fog_level = fog(f_pos.xyz, focus_pos.xyz, medium.x);
|
|
vec4 clouds;
|
|
vec3 fog_color = get_sky_color(cam_to_frag/*-view_dir*/, time_of_day.x, cam_pos.xyz, f_pos, 0.25, true, clouds);
|
|
|
|
// vec3 reflect_ray_dir = reflect(cam_to_frag, norm);
|
|
// Hack to prevent the reflection ray dipping below the horizon and creating weird blue spots in the water
|
|
// reflect_ray_dir.z = max(reflect_ray_dir.z, 0.01);
|
|
|
|
// vec4 _clouds;
|
|
// vec3 reflect_color = get_sky_color(reflect_ray_dir, time_of_day.x, f_pos, vec3(-100000), 0.25, false, _clouds) * f_light;
|
|
// Tint
|
|
// reflect_color = mix(reflect_color, surf_color, 0.6);
|
|
|
|
// vec4 color = mix(vec4(reflect_color * 2.0, 1.0), vec4(surf_color, 1.0 / (1.0 + /*diffuse_light*/(f_light * point_shadow + point_light) * 0.25)), passthrough);
|
|
// vec4 color = mix(vec4(reflect_color * 2.0, 1.0), vec4(surf_color, 1.0 / (1.0 + /*diffuse_light*/(/*f_light * point_shadow*/f_light * point_shadow + reflected_light_point/* + point_light*//*reflected_light*/) * 0.25)), passthrough);
|
|
// vec4 color = mix(vec4(surf_color, 1.0), vec4(surf_color, 0.0), passthrough);
|
|
//vec4 color = vec4(surf_color, 1.0);
|
|
vec4 color = vec4(surf_color, mix(1.0, 1.0 / (1.0 + /*0.25 * *//*diffuse_light*/(/*f_light * point_shadow*/reflected_light_point)), passthrough));
|
|
|
|
tgt_color = mix(mix(color, vec4(fog_color, 0.0), fog_level), vec4(clouds.rgb, 0.0), clouds.a);
|
|
}
|