EVOLUTION-MANAGER

Edit File: lineVertexShader.glsl

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ attribute vec2 position; attribute vec4 extrusion_vectors; varying float fade_factor; // fade factor for anti-aliasing uniform float line_width; uniform float feather; // width where we fade the line uniform mat4 mvp; void main() { vec2 extrusion_vector = extrusion_vectors.xy; // miter factor to additionally lenghten the distance of vertex (needed for miter) // if 1.0 - miter_factor has no effect float miter_factor = 1.0f / abs(extrusion_vectors.z); // fade factor is always -1.0 or 1.0 -> we transport that info together with length fade_factor = sign(extrusion_vectors.z); float rendered_thickness = (line_width + feather * 2.0) * miter_factor; // lengthen the vertex in directon of the extrusion vector by line width. vec4 position = vec4(position + (extrusion_vector * (rendered_thickness / 2.0) ), 0.0, 1.0); gl_Position = mvp * position; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */