shaders/standard_skinned.vs

   1 #include "vertex_standard.glsl"
   2
   3 uniform mat4 uPv;
   4 uniform mat4x3 uTransforms[32];
   5
   6 out vec4 aColour;
   7 out vec2 aUv;
   8 out vec3 aNorm;
   9 out vec3 aCo;
  10 out vec3 aWorldCo;
  11
  12 void main()
  13 {
  14    vec4 co_local = vec4( a_co, 1.0 );
  15    vec3 co0 = uTransforms[ a_groups[0] ] * co_local;
  16    vec3 co1 = uTransforms[ a_groups[1] ] * co_local;
  17    vec3 co2 = uTransforms[ a_groups[2] ] * co_local;
  18    vec3 n0  = mat3(uTransforms[ a_groups[0] ]) * a_norm;
  19    vec3 n1  = mat3(uTransforms[ a_groups[1] ]) * a_norm;
  20    vec3 n2  = mat3(uTransforms[ a_groups[2] ]) * a_norm;
  21
  22    vec3 world_pos = co0*a_weights[0] + co1*a_weights[1] + co2*a_weights[2];
  23    vec3 world_normal = n0*a_weights[0] + n1*a_weights[1] + n2*a_weights[2];
  24
  25    gl_Position = uPv * vec4( world_pos, 1.0 );
  26    aColour = a_colour;
  27    aUv = a_uv;
  28    aNorm = world_normal;
  29    aCo = a_co;
  30    aWorldCo = world_pos;
  31 }