42 lines
1.1 KiB
GLSL
42 lines
1.1 KiB
GLSL
#version 330 core
|
|
|
|
in VS_OUT {
|
|
vec2 texcoord;
|
|
vec3 vertex_normal;
|
|
vec3 view_vector;
|
|
vec3 rawpos;
|
|
} fs_in;
|
|
|
|
uniform sampler2D color_tex;
|
|
uniform sampler3D noise_tex;
|
|
|
|
const float NORMALMAP_SCALE = 8.0;
|
|
|
|
// gbuffer_pack.glsl
|
|
void gbuffer_pack(vec3 normal, vec3 base_color, float metallic, float roughness,
|
|
float occlusion, vec3 emissive, uint mat_id);
|
|
// color.glsl
|
|
vec3 eotf_inverse_sRGB(vec3 srgb);
|
|
// normalmap.glsl
|
|
vec3 perturb_normal(vec3 N, vec3 V, vec2 texcoord);
|
|
|
|
void main()
|
|
{
|
|
vec4 texel = texture(color_tex, fs_in.texcoord);
|
|
vec3 color = eotf_inverse_sRGB(texel.rgb);
|
|
|
|
vec3 N = normalize(fs_in.vertex_normal);
|
|
N = perturb_normal(N, fs_in.view_vector, fs_in.texcoord * NORMALMAP_SCALE);
|
|
|
|
vec3 noise_large = texture(noise_tex, fs_in.rawpos * 0.0045).rgb;
|
|
vec3 noise_small = texture(noise_tex, fs_in.rawpos).rgb;
|
|
|
|
float mix_factor = noise_large.r * noise_large.g * noise_large.b * 350.0;
|
|
mix_factor = smoothstep(0.0, 1.0, mix_factor);
|
|
|
|
color = mix(color, noise_small, 0.15);
|
|
|
|
float roughness = mix(0.94, 0.98, mix_factor);
|
|
|
|
gbuffer_pack(N, color, 0.0, roughness, 1.0, vec3(0.0), 3u);
|
|
}
|