feat(all): 迁移扩展相关功能

2026-04-08 15:34:43 +08:00
parent ad2dd979eb
commit d7c0dba569
278 changed files with 25207 additions and 62 deletions
@@ -0,0 +1,87 @@
+const float IOR_AIR = 1.0;
+const float IOR_WATER = 1.333;
+
+const vec3 abovewaterColor = vec3(0.25, 1.0, 1.25);
+const vec3 underwaterColor = vec3(0.4, 0.9, 1.0);
+
+uniform float poolHeight;
+uniform vec2 poolHalfSize;
+uniform float poolRadius;
+
+uniform vec3 light;
+uniform sampler2D tiles;
+uniform sampler2D causticTex;
+uniform sampler2D water;
+uniform float useTiles;
+uniform vec3 tilesColor;
+
+
+vec2 intersectCube(vec3 origin, vec3 ray, vec3 cubeMin, vec3 cubeMax) {
+  vec3 tMin = (cubeMin - origin) / ray;
+  vec3 tMax = (cubeMax - origin) / ray;
+  vec3 t1 = min(tMin, tMax);
+  vec3 t2 = max(tMin, tMax);
+  float tNear = max(max(t1.x, t1.y), t1.z);
+  float tFar = min(min(t2.x, t2.y), t2.z);
+  return vec2(tNear, tFar);
+}
+
+
+vec3 getWallColor(vec3 point) {
+  float scale = 0.5;
+
+  vec3 wallColor = tilesColor;
+  vec3 normal;
+  float edgeX = poolHalfSize.x - 0.001;
+  float edgeZ = poolHalfSize.y - 0.001;
+
+  if (abs(point.x) > edgeX) {
+    vec2 uv = vec2(point.y / poolHeight, point.z / poolHalfSize.y);
+    if (useTiles > 0.5) {
+      wallColor = texture(tiles, uv * 0.5 + vec2(1.0, 0.5)).rgb;
+    }
+    normal = vec3(-sign(point.x), 0.0, 0.0);
+  } else if (abs(point.z) > edgeZ) {
+    vec2 uv = vec2(point.y / poolHeight, point.x / poolHalfSize.x);
+    if (useTiles > 0.5) {
+      wallColor = texture(tiles, uv * 0.5 + vec2(1.0, 0.5)).rgb;
+    }
+    normal = vec3(0.0, 0.0, -sign(point.z));
+  } else {
+    vec2 uv = vec2(point.x / poolHalfSize.x, point.z / poolHalfSize.y);
+    if (useTiles > 0.5) {
+      wallColor = texture(tiles, uv * 0.5 + 0.5).rgb;
+    }
+    normal = vec3(0.0, 1.0, 0.0);
+  }
+
+  scale /= length(point); /* pool ambient occlusion */
+
+  /* caustics */
+  vec3 refractedLight = -refract(-light, vec3(0.0, 1.0, 0.0), IOR_AIR / IOR_WATER);
+  float diffuse = max(0.0, dot(refractedLight, normal));
+  vec2 waterCoord = vec2(
+    point.x / (poolHalfSize.x * 2.0) + 0.5,
+    point.z / (poolHalfSize.y * 2.0) + 0.5
+  );
+  vec4 info = texture(water, waterCoord);
+  if (point.y < info.r) {
+    vec2 poolScale = poolHalfSize * 2.0;
+    vec2 causticCoord = (point.xz - point.y * refractedLight.xz / refractedLight.y) / poolScale;
+    vec4 caustic = texture(causticTex, 0.75 * causticCoord + 0.5);
+    scale += diffuse * caustic.r * 2.0 * caustic.g;
+  } else {
+    /* shadow for the rim of the pool */
+    vec2 t = intersectCube(
+      point,
+      refractedLight,
+      vec3(-poolHalfSize.x, -poolHeight, -poolHalfSize.y),
+      vec3(poolHalfSize.x, poolHeight * 2.0, poolHalfSize.y)
+    );
+    diffuse *= 1.0 / (1.0 + exp(-200.0 / (1.0 + 10.0 * (t.y - t.x)) * (point.y + refractedLight.y * t.y - poolHeight * 2.0 / 12.0)));
+
+    scale += diffuse * 0.5;
+  }
+
+  return wallColor * scale;
+}