Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright (C) 2026 Behdad Esfahbod
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/* Draw-renderer fragment shader entry. The heavy lifting (Slug
* coverage, MSAA, ppem, stem darkening) lives in the shared
* hb-gpu-fragment.glsl that must be prepended to this source;
* this file only adds the thin hb_gpu_draw() wrapper that lifts
* pixelsPerEm out of fwidth() at uniform control flow before
* calling the shared _hb_gpu_slug(). */
float hb_gpu_draw (vec2 renderCoord, uint glyphLoc_)
{
vec2 pixelsPerEm = 1.0 / fwidth (renderCoord);
return _hb_gpu_slug (renderCoord, pixelsPerEm, glyphLoc_);
}