diff options
Diffstat (limited to 'apps/web/src/lib/shaders')
| -rw-r--r-- | apps/web/src/lib/shaders/jfa-init.frag.glsl | 25 | ||||
| -rw-r--r-- | apps/web/src/lib/shaders/jfa-step.frag.glsl | 60 |
2 files changed, 0 insertions, 85 deletions
diff --git a/apps/web/src/lib/shaders/jfa-init.frag.glsl b/apps/web/src/lib/shaders/jfa-init.frag.glsl deleted file mode 100644 index e465752c..00000000 --- a/apps/web/src/lib/shaders/jfa-init.frag.glsl +++ /dev/null @@ -1,25 +0,0 @@ -precision mediump float;
-
-uniform sampler2D u_texture;
-uniform vec2 u_resolution;
-uniform float u_invert;
-
-varying vec2 v_texCoord;
-
-void main() {
- float mask = texture2D(u_texture, v_texCoord).r;
- bool isSeed = u_invert > 0.5 ? mask < 0.5 : mask > 0.5;
-
- if (isSeed) {
- vec2 pixelCoord = floor(v_texCoord * u_resolution);
- float x = pixelCoord.x;
- float y = pixelCoord.y;
- float xHi = floor(x / 256.0);
- float xLo = x - xHi * 256.0;
- float yHi = floor(y / 256.0);
- float yLo = y - yHi * 256.0;
- gl_FragColor = vec4(xHi / 255.0, xLo / 255.0, yHi / 255.0, yLo / 255.0);
- } else {
- gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
- }
-}
diff --git a/apps/web/src/lib/shaders/jfa-step.frag.glsl b/apps/web/src/lib/shaders/jfa-step.frag.glsl deleted file mode 100644 index 9b76a70b..00000000 --- a/apps/web/src/lib/shaders/jfa-step.frag.glsl +++ /dev/null @@ -1,60 +0,0 @@ -precision mediump float;
-
-uniform sampler2D u_texture;
-uniform vec2 u_resolution;
-uniform float u_step_size;
-
-varying vec2 v_texCoord;
-
-vec2 decodeSeed(vec4 encoded) {
- float x = floor(encoded.r * 255.0 + 0.5) * 256.0 + floor(encoded.g * 255.0 + 0.5);
- float y = floor(encoded.b * 255.0 + 0.5) * 256.0 + floor(encoded.a * 255.0 + 0.5);
- return vec2(x, y);
-}
-
-vec4 encodeSeed(vec2 seed) {
- float xHi = floor(seed.x / 256.0);
- float xLo = seed.x - xHi * 256.0;
- float yHi = floor(seed.y / 256.0);
- float yLo = seed.y - yHi * 256.0;
- return vec4(xHi / 255.0, xLo / 255.0, yHi / 255.0, yLo / 255.0);
-}
-
-bool isNoSeed(vec4 encoded) {
- return encoded.r > 0.99 && encoded.g > 0.99 && encoded.b > 0.99 && encoded.a > 0.99;
-}
-
-void main() {
- vec2 pixelCoord = floor(v_texCoord * u_resolution);
- vec2 texelSize = 1.0 / u_resolution;
-
- float bestDist = 1e10;
- vec2 bestSeed = vec2(65535.0);
-
- for (int dy = -1; dy <= 1; dy++) {
- for (int dx = -1; dx <= 1; dx++) {
- vec2 offset = vec2(float(dx), float(dy)) * u_step_size;
- vec2 sampleUV = v_texCoord + offset * texelSize;
-
- if (sampleUV.x < 0.0 || sampleUV.x > 1.0 || sampleUV.y < 0.0 || sampleUV.y > 1.0)
- continue;
-
- vec4 encoded = texture2D(u_texture, sampleUV);
- if (isNoSeed(encoded))
- continue;
-
- vec2 seed = decodeSeed(encoded);
- float dist = distance(pixelCoord, seed);
- if (dist < bestDist) {
- bestDist = dist;
- bestSeed = seed;
- }
- }
- }
-
- if (bestDist < 1e9) {
- gl_FragColor = encodeSeed(bestSeed);
- } else {
- gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
- }
-}
|
