[RELEASE] u22-v03

This version is submitted to U22 breau.

util/glyphas/drawer.vshader

@@ -0,0 +1,25 @@
+#version 330
+
+layout (location = 0) in vec2 i_pos;
+layout (location = 1) in vec2 i_size;
+layout (location = 2) in vec2 i_uv_pos;
+layout (location = 3) in vec2 i_uv_size;
+layout (location = 4) in vec4 i_color;
+
+out vec2 v_uv;
+out vec4 v_color;
+
+void main(void) {
+  vec2 p =
+      gl_VertexID == 0? vec2(0.,  0.):
+      gl_VertexID == 1? vec2(0., -1.):
+      gl_VertexID == 2? vec2(1., -1.):
+      gl_VertexID == 3? vec2(0.,  0.):
+      gl_VertexID == 4? vec2(1., -1.):
+      gl_VertexID == 5? vec2(1.,  0.):
+      vec2(0.);
+
+  gl_Position = vec4(p*i_size+i_pos, 0, 1);
+  v_uv        = p*i_uv_size + i_uv_pos;
+  v_color     = i_color;
+}