Work on transparency of windows/clouds

2025-11-20 12:02:05 +00:00
parent 10dbb238c8
commit 6563d87247
7 changed files with 49 additions and 37 deletions
@@ -4,14 +4,22 @@ layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 layout (std430, binding = 1) readonly buffer Pos { PosCol data[]; };
 out vec4 vCol;
 out vec4 vPos;
-int indices[6] = {0,1,3,0,3,2};
+out vec2 vScreenPos;
+//int indices[6] = {0,1,3,0,3,2};
+int indices[6] = 
+    {0,3,1
+    ,0,2,3};
+// note reversed compared to walls
 void main()
 {
    vCol = data[gl_VertexID / 6].col;
    vec4 pp = data[gl_VertexID / 6].pospos;
    int j = indices[gl_VertexID % 6];
-    float z = (j > 1.5 ? 5000 : 0);
+    //float z = (j > 1.5 ? 5000 : 0);
+    float z = (j > 1.5 ? 200 : 0);
    vec2 xy = (j % 2 > 0 ? pp.xy : pp.zw);
    vPos = vec4( xy, z, 1);
    gl_Position = theMat * vPos;
+    vScreenPos = 0.5 * (vec2(1) + vec2(gl_Position.x / gl_Position.w
+                    ,gl_Position.y / gl_Position.w));
 }