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[orx-fx] Add bias to contour.frag

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This commit is contained in:
Edwin Jakobs
2024-06-24 11:34:14 +02:00
parent e8aa2ce1ce
commit a08090318a
1 changed files with 6 additions and 5 deletions
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11
orx-fx/src/shaders/glsl/edges/contour.frag
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@@ -7,11 +7,12 @@ uniform float contourOpacity;
uniform vec4 contourColor; uniform vec4 contourColor;
uniform float backgroundOpacity; uniform float backgroundOpacity;
uniform int window; uniform int window;
uniform float bias;
float calc_contour(vec2 uv) { float calc_contour(vec2 uv) {
vec4 box = texture(tex0, uv); vec4 box = texture(tex0, uv);
float v = sin(3.1415926535 * levels * dot(vec3(1.0/3.0),box.xyz)); float v = sin(3.1415926535 * levels * (dot(vec3(1.0 / 3.0), box.xyz) + bias));
float level = floor(dot(vec3(1.0/3.0),box.xyz) * levels) / levels; float level = floor((dot(vec3(1.0 / 3.0), box.xyz) + bias) * levels) / levels;
float contour = 1.0 - smoothstep(0., contourWidth, 0.5 * abs(v) / fwidth(v)); float contour = 1.0 - smoothstep(0., contourWidth, 0.5 * abs(v) / fwidth(v));
return contour; return contour;
} }
@@ -21,13 +22,13 @@ void main() {
float contour = 0.0; float contour = 0.0;
float weight = 0.0; float weight = 0.0;
for (int i = -window; i <= window; ++i) { for (int i = -window; i <= window; ++i) {
for (int j = -window; j <= window; ++j) { for (int j = -window; j <= window; ++j) {
contour += calc_contour(v_texCoord0 + step/(float(window)+1.0) * vec2(float(i), float(j))); contour += calc_contour(v_texCoord0 + step / (float(window) + 1.0) * vec2(float(i), float(j)));
weight += 1.0; weight += 1.0;
} }
} }
contour /= weight; contour /= weight;
vec4 t = texture(tex0, v_texCoord0); vec4 t = texture(tex0, v_texCoord0);
o_output = t * backgroundOpacity * (1.0-contour) + contour * contourColor * contourOpacity * t.a; o_output = t * backgroundOpacity * (1.0 - contour) + contour * contourColor * contourOpacity * t.a;
} }