MadeOfJelly/MushMachine
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add glsl noise lib

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This commit is contained in:
Green Sky 2022-04-14 18:03:55 +02:00
parent b520811e72
commit e0f503728d
3 changed files with 136 additions and 0 deletions
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134
framework/opengl_renderer/src/mm/opengl/res/shaders_builtin.cpp
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@ -95,6 +95,7 @@ R"(
// Hash without Sine
// MIT License...
/* Copyright (c)2014 David Hoskins.
modified by Erik Scholz 2022
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
@ -256,6 +257,139 @@ vec4 hash44(vec4 p4)
#endif
)")
// ==================== hashing.glsl ==================== END
// ==================== noise.glsl ==================== START
FS_CONST_MOUNT_FILE("/shaders/builtin/noise.glsl",
R"(
#ifndef INCLUDE_BUILTIN_NOISE
#define INCLUDE_BUILTIN_NOISE
#include "/shaders/builtin/hashing.glsl"
// value noise based on Inigo Quilez value noise shaders.
// https://www.youtube.com/c/InigoQuilez
// https://iquilezles.org/
// value noise 2d: https://www.shadertoy.com/view/lsf3WH
// value noise 3d: https://www.shadertoy.com/view/4sfGzS
float noise12(in vec2 p) {
vec2 i = floor(p);
vec2 f = fract(p);
vec2 u = f * f * (3.0 - 2.0 * f);
return mix(mix( hash12(i + vec2(0.0, 0.0)),
hash12(i + vec2(1.0, 0.0)), u.x),
mix(hash12(i + vec2(0.0, 1.0)),
hash12(i + vec2(1.0, 1.0)), u.x), u.y);
}
vec2 noise22(in vec2 p) {
vec2 i = floor(p);
vec2 f = fract(p);
vec2 u = f * f * (3.0 - 2.0 * f);
return mix(mix( hash22(i + vec2(0.0, 0.0)),
hash22(i + vec2(1.0, 0.0)), u.x),
mix(hash22(i + vec2(0.0, 1.0)),
hash22(i + vec2(1.0, 1.0)), u.x), u.y);
}
float noise13(in vec3 x) {
vec3 i = floor(x);
vec3 f = fract(x);
vec3 u = f * f * (3.0 - 2.0 * f);
return mix(mix(mix( hash13(i + vec3(0.0, 0.0, 0.0)),
hash13(i + vec3(1.0, 0.0, 0.0)), u.x),
mix(hash13(i + vec3(0.0, 1.0, 0.0)),
hash13(i + vec3(1.0, 1.0, 0.0)), u.x), u.y),
mix(mix(hash13(i + vec3(0.0, 0.0, 1.0)),
hash13(i + vec3(1.0, 0.0, 1.0)), u.x),
mix(hash13(i + vec3(0.0, 1.0, 1.0)),
hash13(i + vec3(1.0, 1.0, 1.0)), u.x), u.y), u.z);
}
float noise14(in vec4 x) {
vec4 i = floor(x);
vec4 f = fract(x);
vec4 u = f * f * (3.0 - 2.0 * f);
return
mix(mix(mix(mix(hash14(i + vec4(0.0, 0.0, 0.0, 0.0)),
hash14(i + vec4(1.0, 0.0, 0.0, 0.0)), u.x
),
mix(hash14(i + vec4(0.0, 1.0, 0.0, 0.0)),
hash14(i + vec4(1.0, 1.0, 0.0, 0.0)), u.x
), u.y
),
mix(mix(hash14(i + vec4(0.0, 0.0, 1.0, 0.0)),
hash14(i + vec4(1.0, 0.0, 1.0, 0.0)), u.x
),
mix(hash14(i + vec4(0.0, 1.0, 1.0, 0.0)),
hash14(i + vec4(1.0, 1.0, 1.0, 0.0)), u.x
), u.y
), u.z
),
mix(mix(mix(hash14(i + vec4(0.0, 0.0, 0.0, 1.0)),
hash14(i + vec4(1.0, 0.0, 0.0, 1.0)), u.x
),
mix(hash14(i + vec4(0.0, 1.0, 0.0, 1.0)),
hash14(i + vec4(1.0, 1.0, 0.0, 1.0)), u.x
), u.y
),
mix(mix(hash14(i + vec4(0.0, 0.0, 1.0, 1.0)),
hash14(i + vec4(1.0, 0.0, 1.0, 1.0)), u.x
),
mix(hash14(i + vec4(0.0, 1.0, 1.0, 1.0)),
hash14(i + vec4(1.0, 1.0, 1.0, 1.0)), u.x
), u.y
), u.z
), u.w
);
}
vec2 noise24(in vec4 x) {
vec4 i = floor(x);
vec4 f = fract(x);
vec4 u = f * f * (3.0 - 2.0 * f);
return
mix(mix(mix(mix(hash24(i + vec4(0.0, 0.0, 0.0, 0.0)),
hash24(i + vec4(1.0, 0.0, 0.0, 0.0)), u.x
),
mix(hash24(i + vec4(0.0, 1.0, 0.0, 0.0)),
hash24(i + vec4(1.0, 1.0, 0.0, 0.0)), u.x
), u.y
),
mix(mix(hash24(i + vec4(0.0, 0.0, 1.0, 0.0)),
hash24(i + vec4(1.0, 0.0, 1.0, 0.0)), u.x
),
mix(hash24(i + vec4(0.0, 1.0, 1.0, 0.0)),
hash24(i + vec4(1.0, 1.0, 1.0, 0.0)), u.x
), u.y
), u.z
),
mix(mix(mix(hash24(i + vec4(0.0, 0.0, 0.0, 1.0)),
hash24(i + vec4(1.0, 0.0, 0.0, 1.0)), u.x
),
mix(hash24(i + vec4(0.0, 1.0, 0.0, 1.0)),
hash24(i + vec4(1.0, 1.0, 0.0, 1.0)), u.x
), u.y
),
mix(mix(hash24(i + vec4(0.0, 0.0, 1.0, 1.0)),
hash24(i + vec4(1.0, 0.0, 1.0, 1.0)), u.x
),
mix(hash24(i + vec4(0.0, 1.0, 1.0, 1.0)),
hash24(i + vec4(1.0, 1.0, 1.0, 1.0)), u.x
), u.y
), u.z
), u.w
);
}
#endif
)")
// ==================== noise.glsl ==================== END
}
} // MM::OpenGL

1
framework/opengl_renderer/src/mm/opengl/res/shaders_builtin.hpp
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@ -7,6 +7,7 @@ namespace MM::OpenGL {
// - sampling.glsl
// - tonemapping.glsl
// - hashing.glsl
// - noise.glsl
void load_builtin_shaders_fs(void);
} // MM::OpenGL

1
framework/opengl_renderer/test/builtins.cpp
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@ -38,6 +38,7 @@ R"(
#include "/shaders/builtin/sampling.glsl"
#include "/shaders/builtin/tonemapping.glsl"
#include "/shaders/builtin/hashing.glsl"
#include "/shaders/builtin/noise.glsl"
void main() {
}