Draw walls using vertex pulling

2025-11-10 19:05:54 +00:00
parent 1546caa6a3
commit 1f01147821
8 changed files with 68 additions and 8 deletions
@@ -0,0 +1,22 @@
+#version 450 core
+struct PosTex { vec4 pospos; vec4 texang; };
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
+layout (std430, binding = 2) readonly buffer Pos { PosTex data[]; };
+out float vAng;
+out vec4 vPos;
+out vec3 vTexCoords;
+int indices[6] = {0,1,3,0,3,2};
+void main()
+{
+    vec4 texang = data[gl_VertexID / 6].texang;
+    vec4 pp = data[gl_VertexID / 6].pospos;
+    int j = indices[gl_VertexID % 6];
+    float z = (j > 1.5 ? 100 : 0);
+    vec2 xy = (j % 2 > 0 ? pp.xy : pp.zw);
+    vPos = vec4( xy, z, 1);
+    gl_Position = theMat * vPos;
+    vAng = texang.y;
+    float d = distance(pp.xy,pp.zw) / 50;
+    int jj = j / 2;
+    vTexCoords = vec3(d * (j % 2), 2 * jj , texang.x);
+}