[RELEASE] u22-v04

This version is submitted for U22 final presentation. (squashed 158 commits)

core/loshader/particle.vshader

@@ -0,0 +1,17 @@
+layout (location = 0) in float i_particle_id;
+layout (location = 1) in vec2  i_pos;
+layout (location = 2) in vec2  i_size;
+layout (location = 3) in vec4  i_color;
+layout (location = 4) in float i_time;
+
+out vec2  v_uv;
+out vec4  v_color;
+out float v_time;
+
+void main(void) {
+  v_uv    = vec2(0.);
+  v_color = i_color;
+  v_time  = i_time;
+
+  gl_Position = vec4(0.);
+}