Embed GLSL

Swoosh can embed GLSL without strings; making it look completely natural and retaining your IDE syntax highlighting.

First add #include <Swoosh/EmbedGLSL.h> to the top of your file.

This will export a macro definition GLSL(version, shader) that returns std::string. We'll use it to write the script. The first value is your GLSL version number.

e.g. #version 110 would become GLSL(110, ...).

After, we simply write our script as if it were another class.

auto CHECKERBOARD_FRAG_SHADER = GLSL 
(
  110,
  uniform sampler2D texture;
  uniform sampler2D pattern;
  uniform float progress;

  void main()
  {
    vec4 pixel = texture2D(texture, vec2(gl_TexCoord[0].xy));
    vec4 transition = texture2D(pattern, vec2(gl_TexCoord[0].xy));
    vec4 color = gl_Color * pixel;

    if (progress >= transition.g) {
      color = vec4(1, 1, 1, 0);
    }

    gl_FragColor = color;
  }
);

Embedding textures

Get started here.