smithay 0.7.0

Smithay is a library for writing wayland compositors.
Documentation 
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#version 100

//_DEFINES_

#if defined(EXTERNAL)
#extension GL_OES_EGL_image_external : require
#endif

precision mediump float;
#if defined(EXTERNAL)
uniform samplerExternalOES tex;
#else
uniform sampler2D tex;
#endif

uniform float alpha;
varying vec2 v_coords;

#if defined(DEBUG_FLAGS)
uniform float tint;
#endif

void main() {
    vec4 color = texture2D(tex, v_coords);

#if defined(NO_ALPHA)
    color = vec4(color.rgb, 1.0) * alpha;
#else
    color = color * alpha;
#endif

#if defined(DEBUG_FLAGS)
    if (tint == 1.0)
        color = vec4(0.0, 0.2, 0.0, 0.2) + color * 0.8;
#endif

    gl_FragColor = color;
}