Use vertex pulling for clouds

2025-11-12 19:57:07 +00:00
parent ce1937c78e
commit 409180959c
11 changed files with 202 additions and 107 deletions
@@ -0,0 +1,25 @@
+#version 450 core
+struct CloudPosCol { vec4 pos; vec4 col; };
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
+layout (std430, binding = 6) readonly buffer CPos { CloudPosCol data[]; };
+const vec2 indices[6] = 
+    {vec2(-1,-1)  // 0    2--3
+    ,vec2( 1,-1)  // 1    |  |
+    ,vec2( 1, 1)  // 3    0--1
+    ,vec2(-1,-1)  // 0
+    ,vec2(-1, 1)  // 2
+    ,vec2( 1, 1)  // 3
+    };
+out vec4 vCol;
+out vec2 vControls;
+out vec3 vPos;
+void main()
+{
+    uint i = gl_VertexID / 6;
+    uint k = gl_VertexID % 6;
+    vCol = data[i].col;
+//    vCol = vec4(1,0.5,0,1);
+    vControls = indices[k];
+    vPos = vec3(data[i].pos.xy + 20*vControls, data[i].pos.z);
+    gl_Position = theMat * vec4(vPos,1);
+}