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/** * @file simpleF.glsl * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * $/LicenseInfo$ */ uniform sampler2DRect RenderTexture; void main(void) { vec3 color = vec3(texture2DRect(RenderTexture, gl_TexCoord[0].st)); gl_FragColor = vec4(1.0 - color, 1.0); }