feat(all): 迁移扩展相关功能

packages/sdk/public/resource/shaders/water/pool/fragment.glsl

@@ -0,0 +1,47 @@
+precision highp float;
+precision highp int;
+
+#include <utils>
+
+uniform float wallOpacity;
+uniform float wallMode;
+uniform vec3 volumeColor;
+uniform sampler2D sceneTexture;
+uniform vec2 resolution;
+uniform float useSceneRefraction;
+uniform float surfaceTransmittance;
+uniform float normalStrength;
+uniform float refractionStrength;
+
+in vec3 pos;
+
+out vec4 fragColor;
+
+void main() {
+  vec3 baseColor = wallMode > 0.5 ? volumeColor : getWallColor(pos) * volumeColor;
+
+  vec4 info = texture(water, pos.xz * 0.5 + 0.5);
+  vec2 screenUV = gl_FragCoord.xy / resolution;
+  vec2 offset = info.ba * normalStrength * refractionStrength;
+
+  vec3 mixedColor = baseColor;
+  if (useSceneRefraction > 0.5) {
+    vec2 refractedUV = clamp(screenUV + offset, 0.0, 1.0);
+    vec3 sceneColor = texture(sceneTexture, refractedUV).rgb;
+    mixedColor = mix(baseColor, sceneColor, surfaceTransmittance);
+  }
+
+  float depth = 0.0;
+  if (pos.y < info.r) {
+    depth = clamp((info.r - pos.y) / max(poolHeight, 0.0001), 0.0, 1.0);
+    float atten = wallMode > 0.5 ? mix(0.95, 0.35, depth) : mix(0.98, 0.6, depth);
+    mixedColor *= atten;
+  }
+
+  float alpha = wallOpacity;
+  if (wallMode > 0.5 && pos.y < info.r) {
+    alpha = mix(wallOpacity * 0.6, min(1.0, wallOpacity + 0.5), depth);
+  }
+
+  fragColor = vec4(mixedColor, alpha);
+}

packages/sdk/public/resource/shaders/water/pool/vertex.glsl

@@ -0,0 +1,19 @@
+#include <utils>
+
+uniform mat4 projectionMatrix;
+uniform mat4 modelViewMatrix;
+
+in vec3 position;
+
+out vec3 pos;
+
+
+void main() {
+  pos = position.xyz;
+  pos.x *= poolHalfSize.x;
+  pos.z *= poolHalfSize.y;
+  // 墙体高度与水面齐平：y ∈ [-1, 1] 映射到 [-poolHeight, 0]
+  pos.y = ((1.0 - pos.y) * 0.5 - 1.0) * poolHeight;
+
+  gl_Position = projectionMatrix * modelViewMatrix * vec4(pos, 1.0);
+}