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https://github.com/Xaymar/obs-StreamFX
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filter-shader: New filter examples
CRT Curvature: Emulate an old CRT TVs curvature ... CRT Scanlines: ... and emulate an old CRT TVs scanlines, rollbar and bleeding! Hexagonize: Turn things into hexagons. You know, like the thing you see in my streams.
This commit is contained in:
Michael Fabian 'Xaymar' Dirks
parent
79406b0b08
commit
4fda7de573
3 changed files with 373 additions and 0 deletions
99
data/examples/shaders/filter/crt-curvature.effect
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99
data/examples/shaders/filter/crt-curvature.effect
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// Always provided by OBS
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uniform float4x4 ViewProj<
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bool automatic = true;
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string name = "View Projection Matrix";
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>;
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// Provided by Stream Effects
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uniform float4 Time<
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bool automatic = true;
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string name = "Time Array";
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string description = "A float4 value containing the total time, rendering time and the time since the last tick. The last value is a random number between 0 and 1.";
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>;
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uniform float4x4 Random<
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bool automatic = true;
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string name = "Random Array";
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string description = "A float4x4 value containing random values between 0 and 1";
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>;
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uniform texture2d InputA<
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bool automatic = true;
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>;
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uniform float _0_strength<
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string name = "Strength";
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string field_type = "slider";
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float minimum = 0.;
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float maximum = 100.;
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float step = 0.01;
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float scale = 0.01;
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> = 33.33;
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uniform float4 _1_border<
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string name = "Border Color";
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string field_type = "slider";
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float4 minimum = {0., 0., 0., 0.};
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float4 maximum = {100., 100., 100., 100.};
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float4 step = {0.01, 0.01, 0.01, 0.01};
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float4 scale = {0.01, 0.01, 0.01, 0.01};
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> = {0., 0., 0., 0.};
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uniform float _2_feathering<
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string name = "Feathering";
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string field_type = "slider";
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float minimum = 0.01;
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float maximum = 100.;
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float step = 0.01;
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float scale = 0.01;
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> = 33.33;
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#define PI 3.1415926f
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#define TwoPI 6.2831853f
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#define HalfPI 1.5707963f
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// ---------- Shader Code
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sampler_state def_sampler {
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AddressU = Clamp;
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AddressV = Clamp;
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Filter = Linear;
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};
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struct VertData {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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VertData VSDefault(VertData v_in) {
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VertData vert_out;
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vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
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vert_out.uv = v_in.uv;
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return vert_out;
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}
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float4 PSDefault(VertData v_in) : TARGET {
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float2 center = {0.5, 0.5};
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float2 cc = v_in.uv - center;
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float dist = dot(cc, cc) * _0_strength;
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float2 bentUV = v_in.uv + cc * (1.0 + dist) * dist;
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if ((bentUV.x <= 0. || bentUV.x >= 1.) || (bentUV.y <= 0. || bentUV.y >= 1.)) {
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return _1_border;
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}
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// Calculate border distance from texel center by ignoring the sign bit and normalizing the distance to 0..1.
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float2 borderDistance = (center - abs(bentUV - center)) / center;
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float2 borderArea = center * _2_feathering;
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// Now apply a modifier so that we only get the border area.
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borderDistance = (min(borderDistance - center * _2_feathering, 0) + borderArea) / borderArea;
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float borderFade = sin(borderDistance.x * HalfPI) * sin(borderDistance.y * HalfPI);
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return lerp(_1_border, InputA.Sample(def_sampler, bentUV), borderFade);
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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(v_in);
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pixel_shader = PSDefault(v_in);
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}
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}
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136
data/examples/shaders/filter/crt-scanlines.effect
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136
data/examples/shaders/filter/crt-scanlines.effect
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// Always provided by OBS
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uniform float4x4 ViewProj<
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bool automatic = true;
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string name = "View Projection Matrix";
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>;
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// Provided by Stream Effects
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uniform float4 Time<
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bool automatic = true;
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string name = "Time Array";
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string description = "A float4 value containing the total time, rendering time and the time since the last tick. The last value is a random number between 0 and 1.";
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>;
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uniform float4x4 Random<
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bool automatic = true;
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string name = "Random Array";
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string description = "A float4x4 value containing random values between 0 and 1";
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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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uniform texture2d InputA<
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bool automatic = true;
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>;
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uniform float _0_Strength<
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string name = "Strength";
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string field_type = "slider";
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float minimum = 0.;
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float maximum = 100.;
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float step = 0.01;
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float scale = 0.01;
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> = 100.0;
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uniform int _1_Scanlines<
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string name = "Scanlines";
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string field_type = "slider";
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int minimum = 128;
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int maximum = 16384;
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int step = 1;
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> = 525;
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uniform float2 _1_Intensity<
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string name = "Intensity Limits";
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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 step = {0.01, 0.01};
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float2 scale = {0.01, 0.01};
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> = {95.0, 100.0};
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uniform bool _2_EnableBleed<
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string name = "Enable NTSC Bleeding";
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> = true;
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uniform float _3_ScanlineSize<
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string name = "Scanline Scaling";
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string field_type = "slider";
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float minimum = 0.01;
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float maximum = 100.;
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float step = 0.01;
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float scale = 0.01;
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> = 100.0;
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uniform float _4_Speed<
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string name = "Timescale";
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string field_type = "slider";
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float minimum = 0.01;
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float maximum = 100.;
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float step = 0.01;
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float scale = 0.01;
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> = 60.0;
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#define PI 3.1415926f
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#define TwoPI 6.2831853f
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#define HalfPI 1.5707963f
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// ---------- Shader Code
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sampler_state def_sampler {
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AddressU = Clamp;
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AddressV = Clamp;
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Filter = Linear;
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};
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struct VertData {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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VertData VSDefault(VertData v_in) {
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VertData vert_out;
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vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
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vert_out.uv = v_in.uv;
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return vert_out;
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}
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float4 PSDefault(VertData v_in) : TARGET {
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float2 uv = v_in.uv;
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float time_offset = Time.y * _4_Speed;
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// Scanline stuff.
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uint scanline_index = floor(fmod((uv.y + time_offset), 1.) * _1_Scanlines);
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uint scanline_intensity = scanline_index % 2;
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// Calculate final color;
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float4 rgb = InputA.Sample(def_sampler, uv);
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// Bleeding
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if (_2_EnableBleed) {
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// Not true bleeding, missing some gaussian blur.
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float offset = float(scanline_intensity) * 0.0005;
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float colorShift = 0.001;
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float r = InputA.Sample(def_sampler, uv + offset + colorShift).r;
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float g = InputA.Sample(def_sampler, uv + offset - colorShift).g;
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float b = rgb.b;
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rgb.rgb = float3(r, g, b); // g * 0.99?
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}
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// Intensity;
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rgb.rgb *= clamp(float(scanline_intensity), _1_Intensity.x, _1_Intensity.y);
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// rollbar
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const float rollbar_cycle_length = 5.;
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float rollbar_cycle = Time.y + fmod(Time.z, rollbar_cycle_length);
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float rollbar = sin((uv.y + rollbar_cycle / rollbar_cycle_length) * TwoPI);
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rgb.rgb = lerp(rgb, rgb + (rollbar * 0.1), _0_Strength);
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return rgb;
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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(v_in);
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pixel_shader = PSDefault(v_in);
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}
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}
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138
data/examples/shaders/filter/hexagonize.effect
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138
data/examples/shaders/filter/hexagonize.effect
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// Always provided by OBS
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uniform float4x4 ViewProj<
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bool automatic = true;
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string name = "View Projection Matrix";
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>;
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// Provided by Stream Effects
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uniform float4 Time<
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bool automatic = true;
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string name = "Time Array";
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string description = "A float4 value containing the total time, rendering time and the time since the last tick. The last value is a random number between 0 and 1.";
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>;
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uniform float4x4 Random<
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bool automatic = true;
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string name = "Random Array";
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string description = "A float4x4 value containing random values between 0 and 1";
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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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uniform texture2d InputA<
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bool automatic = true;
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>;
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uniform float HexagonScale<
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string name = "Hexagon Scale";
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string field_type = "slider";
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float minimum = 1.0;
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float maximum = 1024.0;
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float step = 1.0;
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> = 120.0;
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uniform float HexagonWallScale<
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string name = "Hexagon Wall Scale";
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string field_type = "slider";
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float minimum = 0.0;
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float maximum = 100.0;
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float step = 0.01;
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float scale = 0.01;
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> = 100.0;
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// ---------- Shader Code
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sampler_state def_sampler {
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AddressU = Clamp;
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AddressV = Clamp;
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Filter = Linear;
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};
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struct VertData {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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VertData VSDefault(VertData v_in) {
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VertData vert_out;
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vert_out.pos = mul(float4(v_in.pos.xyz, 1.0), ViewProj);
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vert_out.uv = v_in.uv;
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return vert_out;
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}
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#define PI 3.1415926f
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#define TAU 6.2831853f
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#define deg30 0.20943951
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float hexDist(float2 a, float2 b){
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float2 p = abs(b-a);
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float s = sin(deg30);
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float c = cos(deg30);
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float diagDist = s*p.x + c*p.y;
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return max(diagDist, p.x)/c;
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}
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float2 nearestHex(float s, float2 st){
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float h = sin(deg30)*s;
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float r = cos(deg30)*s;
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float b = s + 2.0*h;
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float a = 2.0*r;
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float m = h/r;
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float2 sect = st/float2(2.0*r, h+s);
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float2 sectPxl = fmod(st, float2(2.0*r, h+s));
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float aSection = fmod(floor(sect.y), 2.0);
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float2 coord = floor(sect);
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if(aSection > 0.0){
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if(sectPxl.y < (h-sectPxl.x*m)){
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coord -= 1.0;
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}
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else if(sectPxl.y < (-h + sectPxl.x*m)){
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coord.y -= 1.0;
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}
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}
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else{
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if(sectPxl.x > r){
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if(sectPxl.y < (2.0*h - sectPxl.x * m)){
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coord.y -= 1.0;
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}
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}
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else{
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if(sectPxl.y < (sectPxl.x*m)){
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coord.y -= 1.0;
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}
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else{
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coord.x -= 1.0;
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}
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}
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}
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float xoff = fmod(coord.y, 2.0)*r;
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return float2(coord.x*2.0*r-xoff, coord.y*(h+s))+float2(r*2.0, s);
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}
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float4 PSDefault(VertData v_in) : TARGET {
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float2 coord = v_in.uv * ViewSize.xy;
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float s = ViewSize.x/HexagonScale;
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float2 nearest = nearestHex(s, coord);
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float4 texel = InputA.Sample(def_sampler, nearest / ViewSize.xy);//, -100.0);
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float dist = hexDist(coord, nearest);
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float luminance = (texel.r + texel.g + texel.b)/3.0;
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//float interiorSize = luminance*s;
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float interiorSize = s * HexagonWallScale;
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float interior = 1.0 - smoothstep(interiorSize-1.0, interiorSize, dist);
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//fragColor = float4(dist);
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return float4(texel.rgb*interior, 1.0);
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//fragColor = float4(nearest, 0.0, 1.0);
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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(v_in);
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pixel_shader = PSDefault(v_in);
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}
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}
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