message: text.frag: Save some change I did for debugging.
diff: @@ -11,6 +11,8 @@ in vec4 fs_textColor;
  // layout (location = 0, index = 1) out vec4 colorMask;
  out vec4 fragColor;
  +const vec4 TEST_PIXEL = vec4(1.0, 0.0, 0.0, 1.0); // test pixel for debugging
  +
  void renderGrayscaleGlyph()
  {
  // XXX monochrome glyph (RGB)
  @@ -29,6 +31,7 @@ void renderColoredRGBA()
  {
  // colored image (RGBA)
  vec4 v = texture(fs_colorTextures, fs_TexCoord.xyz);
  + //v = TEST_PIXEL;
  fragColor = v;
  }
  