Significance of JUCE_OPENGL_ES

Development
1

Hi everybody,

Looking at the following example of a fragment shader, taken from the JUCE OPENGL demo.

           #if JUCE_OPENGL_ES
            "varying lowp vec4 destinationColour;\n"
            "varying lowp vec2 textureCoordOut;\n"
           #else
            "varying vec4 destinationColour;\n"
            "varying vec2 textureCoordOut;\n"
           #endif
            "\n"
            "void main()\n"
            "{\n"
           #if JUCE_OPENGL_ES
            "    lowp vec4 colour = vec4(0.95, 0.57, 0.03, 0.7);\n"
           #else
            "    vec4 colour = vec4(0.95, 0.57, 0.03, 0.7);\n"
           #endif
            "    gl_FragColor = colour;\n"
            "}\n";

What exactly is the point of JUCE_OPENGL_ES?

2

The tutorial explains a bit more here.

Also you can read more about OpenGL ES on the official website