killed old zoom so that framebuffer would render without hack

assets/blur.frag

@@ -1,19 +1,73 @@
-precision highp float;
+#ifdef GL_ES
+#define LOWP lowp
+precision mediump float;
+#else
+#define LOWP
+#endif
 
-uniform vec3 iResolution;
-uniform sampler2D iChannel0;
-uniform bool flip;
-uniform vec2 direction;
+varying vec4 v_color;
+varying vec2 v_texCoords;
+uniform sampler2D u_texture;
 
-//uniform mat4 u_projTrans;
-
-#pragma glslify: blur = require('13')
+varying vec4 vertexWorldPos;
+uniform vec4 backColor;
 
+uniform float width;
+uniform float height;
 void main() {
-  vec2 uv = vec2(gl_FragCoord.xy / iResolution.xy);
-  if (flip) {
-    uv.y = 1.0 - uv.y;
-  }
+    vec2 tex;
+    vec4 color2=vec4(0.0,0.0,0.0,0);
+
+    float stepx=(1.0/width)*4.0;
+    float stepy=(1.0/height)*4.0;
+    vec4 color;
+
+    tex.x=v_texCoords.x+stepx;
+    tex.y=v_texCoords.y+stepy;
+    color=v_color * texture2D(u_texture, tex);
+    color2.r+=color.r;
+    color2.g+=color.g;
+    color2.b+=color.b;
+    color2.a+=color.a;
+
+    tex.x=v_texCoords.x-stepx;
+    tex.y=v_texCoords.y+stepy;
+    color=v_color * texture2D(u_texture, tex);
+    color2.r+=color.r;
+    color2.g+=color.g;
+    color2.b+=color.b;
+    color2.a+=color.a;
+
+    tex.x=v_texCoords.x-stepx;
+    tex.y=v_texCoords.y-stepy;
+    color=v_color * texture2D(u_texture, tex);
+    color2.r+=color.r;
+    color2.g+=color.g;
+    color2.b+=color.b;
+    color2.a+=color.a;
+
+    tex.x=v_texCoords.x+stepx;
+    tex.y=v_texCoords.y-stepy;
+    color=v_color * texture2D(u_texture, tex);
+    color2.r+=color.r;
+    color2.g+=color.g;
+    color2.b+=color.b;
+    color2.a+=color.a;
+
+    tex.x=v_texCoords.x;
+    tex.y=v_texCoords.y;
+    color=v_color * texture2D(u_texture, tex);
+    color2.r+=color.r;
+    color2.g+=color.g;
+    color2.b+=color.b;
+    color2.a+=color.a;
+
+    color2.r/=5.0;
+    color2.g/=5.0;
+    color2.b/=5.0;
+    color2.a/=5.0;
+
+
+    gl_FragColor = color2;
 
-  gl_FragColor = blur(iChannel0, uv, iResolution.xy, direction);
 }