feat: masks, properties refactor, shaders, storage migrations, and more

1 files changed, 25 insertions, 0 deletions

diff --git a/apps/web/src/lib/shaders/jfa-init.frag.glsl b/apps/web/src/lib/shaders/jfa-init.frag.glsl
new file mode 100644
index 00000000..d199d234
--- /dev/null
+++ b/apps/web/src/lib/shaders/jfa-init.frag.glsl
@@ -0,0 +1,25 @@
+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);
+  }
+}