View difference between Paste ID: udjQPVfs and a3NNRQhF

-// passthrough.vert
+// gaussianTexCoordsX.vert
 #version 120
 
-attribute vec3 position;
+attribute vec4 position;
-varying vec3 vertex;
+attribute vec2 texCoord;
 
 varying vec2 vertex;
-    vertex = position;
+varying vec2 blurCoords[7];
-    gl_Position = gl_ModelViewProjectionMatrix * vec4(position, 1);
+
 void main() {
     gl_Position = position;
 
     vertex = texCoord;
     blurCoords[0] = texCoord + vec2(-3, 0);
-varying vec3 vertex;
+    blurCoords[1] = texCoord + vec2(-2, 0);
     blurCoords[2] = texCoord + vec2(-1, 0);
     blurCoords[3] = texCoord + vec2( 0, 0);
     blurCoords[4] = texCoord + vec2( 1, 0);
     blurCoords[5] = texCoord + vec2( 2, 0);
     blurCoords[6] = texCoord + vec2( 3, 0);
 }
-uniform sampler3D tex;
+
-uniform vec3 direction;
+
-uniform vec4 color;
+
 
-// Simple gaussian blur in the specified direction (set direction.x, direction.y, direction.z)
+varying vec2 vertex;
-// standard deviation is 1, sample rate is 1 per pixel in a 3 pixel radius
+varying vec2 blurCoords[7];
 
 const float gaussD3 = 0.0044318;
 const float gaussD2 = 0.0539910;
-    sum += texture3D(tex, vec3(vertex.x - 3*direction.x, vertex.y - 3*direction.y, vertex.z - 3*direction.z)) * gaussD3;
+
-    sum += texture3D(tex, vec3(vertex.x - 2*direction.x, vertex.y - 2*direction.y, vertex.z - 2*direction.z)) * gaussD2;
+
-    sum += texture3D(tex, vec3(vertex.x - 1*direction.x, vertex.y - 1*direction.y, vertex.z - 1*direction.z)) * gaussD1;
+
-    sum += texture3D(tex, vec3(vertex.x, vertex.y, vertex.z)) * gaussD0;
+uniform sampler2D tex;
-    sum += texture3D(tex, vec3(vertex.x + 1*direction.x, vertex.y + 1*direction.y, vertex.z + 1*direction.z)) * gaussD1;
+
-    sum += texture3D(tex, vec3(vertex.x + 2*direction.x, vertex.y + 2*direction.y, vertex.z + 2*direction.z)) * gaussD2;
+// Simple gaussian blur over the specified coordinates (blurCoords[blurCoords.length/2] is middle point)
-    sum += texture3D(tex, vec3(vertex.x + 3*direction.x, vertex.y + 3*direction.y, vertex.z + 3*direction.z)) * gaussD3;
+// standard deviation is 1
 void main() {
-    gl_FragColor = color * sum;
+
 
     sum += texture2D(tex, blurCoords[0]) * gaussD3;
     sum += texture2D(tex, blurCoords[1]) * gaussD2;
     sum += texture2D(tex, blurCoords[2]) * gaussD1;
     sum += texture2D(tex, blurCoords[3]) * gaussD0;
     sum += texture2D(tex, blurCoords[4]) * gaussD1;
     sum += texture2D(tex, blurCoords[5]) * gaussD2;
     sum += texture2D(tex, blurCoords[6]) * gaussD3;
 
     gl_FragColor = sum;
 }