mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-12-04 17:17:25 +00:00
154 lines
3.7 KiB
Text
154 lines
3.7 KiB
Text
// https://www.shadertoy.com/view/XljBW3
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#define vec2 float2
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#define vec3 float3
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#define vec4 float4
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#define ivec2 int2
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#define ivec3 int3
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#define ivec4 int4
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#define mat2 float2x2
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#define mat3 float3x3
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#define mat4 float4x4
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#define fract frac
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#define mix lerp
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#define iTime Time.x
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#define iResolution ViewSize
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uniform float2 mouse<
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string name = "Virtual Mouse Coordinates";
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string field_type = "slider";
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float2 minimum = {0, 0};
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float2 maximum = {100., 100.};
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float2 scale = {.01, .01};
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float2 step = {.01, .01};
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> = {0., 0.};
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uniform float4x4 ViewProj<
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bool automatic = true;
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>;
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uniform bool direction<
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string name = "Invert Direction";
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> = true;
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uniform float4x4 Random<
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bool visible = false;
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>;
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uniform float4x4 Random<
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bool automatic = true;
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>;
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uniform float4 Time<
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bool automatic = true;
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>;
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uniform float4 ViewSize<
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bool automatic = true;
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>;
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int2 iMouse() {
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return int2(mouse.x * ViewSize.x, mouse.y * ViewSize.y);
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}
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vec3 rgb2hsv(vec3 c)
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{
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vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
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vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
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float d = q.x - min(q.w, q.y);
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float e = 1.0e-10;
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return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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}
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vec3 hsv2rgb(vec3 c)
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{
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vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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}
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float rand(vec2 n) {
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return fract(sin(cos(dot(n, vec2(12.9898,12.1414)))) * 83758.5453);
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}
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float noise(vec2 n) {
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const vec2 d = vec2(0.0, 1.0);
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vec2 b = floor(n), f = smoothstep(vec2(0.0,0.0), vec2(1.0, 1.0), fract(n));
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return mix(mix(rand(b), rand(b + d.yx), f.x), mix(rand(b + d.xy), rand(b + d.yy), f.x), f.y);
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}
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float fbm(vec2 n) {
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float total = 0.0, amplitude = 1.0;
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for (int i = 0; i <5; i++) {
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total += noise(n) * amplitude;
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n += n*1.7;
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amplitude *= 0.47;
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}
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return total;
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}
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void mainImage( out vec4 fragColor, in vec2 fragCoord ) {
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const vec3 c1 = vec3(0.5, 0.0, 0.1);
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const vec3 c2 = vec3(0.9, 0.1, 0.0);
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const vec3 c3 = vec3(0.2, 0.1, 0.7);
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const vec3 c4 = vec3(1.0, 0.9, 0.1);
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const vec3 c5 = vec3(0.1,0.1,0.1);
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const vec3 c6 = vec3(0.9,0.9,0.9);
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vec2 speed = vec2(1.2, 0.1);
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float shift = 1.327+sin(iTime*2.0)/2.4;
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float alpha = 1.0;
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//change the constant term for all kinds of cool distance versions,
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//make plus/minus to switch between
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//ground fire and fire rain!
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float dist = 3.5-sin(iTime*0.4)/1.89;
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vec2 p = fragCoord.xy * dist / iResolution.xx;
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p.x += iTime/1.1;
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float q = fbm(p - iTime * 0.01+1.0*sin(iTime)/10.0);
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float qb = fbm(p - iTime * 0.002+0.1*cos(iTime)/5.0);
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float q2 = fbm(p - iTime * 0.44 - 5.0*cos(iTime)/7.0) - 6.0;
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float q3 = fbm(p - iTime * 0.9 - 10.0*cos(iTime)/30.0)-4.0;
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float q4 = fbm(p - iTime * 2.0 - 20.0*sin(iTime)/20.0)+2.0;
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q = (q + qb - .4 * q2 -2.0*q3 + .6*q4)/3.8;
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vec2 r = vec2(fbm(p + q /2.0 - iTime * speed.x - p.x - p.y), fbm(p - q - iTime * speed.y));
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vec3 c = mix(c1, c2, fbm(p + r)) + mix(c3, c4, r.x) - mix(c5, c6, r.y);
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vec3 color = vec3(c * cos(shift * 1 - fragCoord.y / iResolution.y));
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color += .05;
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color.r *= .8;
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vec3 hsv = rgb2hsv(color);
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hsv.y *= hsv.z * 1.1;
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hsv.z *= hsv.y * 1.13;
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hsv.y = (2.2-hsv.z*.9)*1.20;
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color = hsv2rgb(hsv);
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fragColor = vec4(color.x, color.y, color.z, alpha);
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}
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struct VertFragData {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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VertFragData VSDefault(VertFragData vtx) {
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vtx.pos = mul(float4(vtx.pos.xyz, 1.0), ViewProj);
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return vtx;
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}
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float4 PSDefault(VertFragData vtx) : TARGET {
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float4 col = float4(1., 1., 1., 1.);
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mainImage(col, vtx.uv * ViewSize.xy);
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return col;
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}
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technique Draw
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{
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pass
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{
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vertex_shader = VSDefault(vtx);
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pixel_shader = PSDefault(vtx);
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}
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}
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