添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/shaders/BlendShader.js

@@ -0,0 +1,49 @@
+/**
+ * Blend two textures
+ */
+
+const BlendShader = {
+
+	name: 'BlendShader',
+
+	uniforms: {
+
+		'tDiffuse1': { value: null },
+		'tDiffuse2': { value: null },
+		'mixRatio': { value: 0.5 },
+		'opacity': { value: 1.0 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform float opacity;
+		uniform float mixRatio;
+
+		uniform sampler2D tDiffuse1;
+		uniform sampler2D tDiffuse2;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vec4 texel1 = texture2D( tDiffuse1, vUv );
+			vec4 texel2 = texture2D( tDiffuse2, vUv );
+			gl_FragColor = opacity * mix( texel1, texel2, mixRatio );
+
+		}`
+
+};
+
+export { BlendShader };