新增1bit图双色着色器

assets/shader/dualColor.glsl

@@ -0,0 +1,12 @@
+uniform float color1[3];
+uniform float color2[3];
+
+vec4 effect(vec4 color,sampler2D tex,vec2 texCoord,vec2 scrCoord){
+    vec4 texcolor=texture2D(tex,texCoord);
+    return vec4(
+        mix(color1[0],color2[0],texcolor.r),
+        mix(color1[1],color2[1],texcolor.g),
+        mix(color1[2],color2[2],texcolor.b),
+        texcolor.a
+    );
+}