feat(all): 迁移扩展相关功能

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);
+}