Make cloud position only record the central point of the cloud

shader/fullscreen/transparencyComp.frag

@@ -1,18 +1,18 @@
 #version 450 core
 in vec2 vTexPos;
 out vec4 fColor;
-layout(binding = 0) uniform sampler2D t0;
-layout(binding = 1) uniform sampler2D t1;
-layout(binding = 2) uniform sampler2D t2;
-layout(binding = 3) uniform sampler2D t3;
+layout(binding = 0) uniform sampler2D wincol;
+layout(binding = 1) uniform sampler2D winpos;
+layout(binding = 2) uniform sampler2D cloudcol;
+layout(binding = 3) uniform sampler2D cloudpos;
 vec4 blend (vec4 src, vec4 dst) {
     return src + (1-src.a) * dst;
 }
 void main() { 
     //fColor = texture(t0, vTexPos) + texture(t2, vTexPos); 
-    vec4 x = texture(t0, vTexPos);
-    float xz = texture(t1, vTexPos).z;
-    vec4 y = texture(t2, vTexPos);
-    float yz = texture(t3, vTexPos).z;
+    vec4 x = texture(wincol, vTexPos);
+    float xz = texture(winpos, vTexPos).z;
+    vec4 y = texture(cloudcol, vTexPos);
+    float yz = texture(cloudpos, vTexPos).z;
     fColor = ( xz > yz ? blend(x,y) : blend(y,x)) ;
 }

shader/pull/cloud.vert

@@ -19,6 +19,9 @@ void main()
     uint k = gl_VertexID % 6;
     vCol = unpackUnorm4x8(data[i].col);
     vControls = indices[k];
-    vPos = vec3(data[i].pos.xy + 20*vControls, data[i].pos.z);
-    gl_Position = theMat * vec4(vPos,1);
+    vec3 vPosx = vec3(data[i].pos.xy + 20*vControls, data[i].pos.z);
+    gl_Position = theMat * vec4(vPosx,1);
+    vPos = data[i].pos;
+    //vPos = vec3(data[i].pos.xy + 20*vControls, data[i].pos.z);
+    //gl_Position = theMat * vec4(vPos,1);
 }