Witch of Git - lovr-particles/blob - shaders/particles.vert

   1 in vec2 vertPosition;
   2 uniform vec3 headPos;
   3 layout(std430) buffer particleData { vec4 particlePos[2]; };
   4
   5 vec4 position(mat4 projection, mat4 transform, vec4 vertex) {
   6   vec3 pos = particlePos[gl_InstanceID].xyz;
   7   vec3 forward = normalize(pos - headPos);
   8   vec3 right = normalize(cross(forward, vec3(0, 1, 0)));
   9   vec3 up = cross(right, forward);
  10   mat2 frame = mat2(up, right);
  11   // vec3 vert = pos + vec3(frame * vertPosition * 0.3, 0);
  12   vec3 vert = pos + vec3(vertPosition, 0);
  13   return projection * transform * vec4(vert, 1);
  14 }