static const char *stock_cg_gl_program =
      "struct input"
      "{"
      "  float2 tex_coord;"
      "  float4 color;"
      "  float4 vertex_coord;"
      "  uniform float4x4 mvp_matrix;"
      "  uniform sampler2D texture;"
      "};"
      "struct vertex_data"
      "{"
      "  float2 tex;"
      "  float4 color;"
      "};"
      "void main_vertex"
      "("
      "	out float4 oPosition : POSITION,"
      "  input IN,"
      "  out vertex_data vert"
      ")"
      "{"
      "	oPosition = mul(IN.mvp_matrix, IN.vertex_coord);"
      "  vert = vertex_data(IN.tex_coord, IN.color);"
      "}"
      ""
      "float4 main_fragment(input IN, vertex_data vert, uniform sampler2D s0 : TEXUNIT0) : COLOR"
      "{"
      "  return vert.color * tex2D(s0, vert.tex);"
      "}";