--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/include/mupdf/fitz/glyph-cache.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,96 @@
+// Copyright (C) 2004-2025 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef MUPDF_FITZ_GLYPH_CACHE_H
+#define MUPDF_FITZ_GLYPH_CACHE_H
+
+#include "mupdf/fitz/context.h"
+#include "mupdf/fitz/geometry.h"
+#include "mupdf/fitz/font.h"
+#include "mupdf/fitz/pixmap.h"
+#include "mupdf/fitz/device.h"
+
+/**
+	Purge all the glyphs from the cache.
+*/
+void fz_purge_glyph_cache(fz_context *ctx);
+
+/**
+	Create a pixmap containing a rendered glyph.
+
+	Lookup gid from font, clip it with scissor, and rendering it
+	with aa bits of antialiasing into a new pixmap.
+
+	The caller takes ownership of the pixmap and so must free it.
+
+	Note: This function is no longer used for normal rendering
+	operations, and is kept around just because we use it in the
+	app. It should be considered "at risk" of removal from the API.
+*/
+fz_pixmap *fz_render_glyph_pixmap(fz_context *ctx, fz_font *font, int gid, fz_matrix *ctm, const fz_irect *scissor, int aa);
+
+/**
+	Nasty PDF interpreter specific hernia, required to allow the
+	interpreter to replay glyphs from a type3 font directly into
+	the target device.
+
+	This is only used in exceptional circumstances (such as type3
+	glyphs that inherit current graphics state, or nested type3
+	glyphs).
+*/
+void fz_render_t3_glyph_direct(fz_context *ctx, fz_device *dev, fz_font *font, int gid, fz_matrix trm, void *gstate, fz_default_colorspaces *def_cs, void *fill_gstate, void *stroke_gstate);
+
+/**
+	Force a type3 font to cache the displaylist for a given glyph
+	id.
+
+	This caching can involve reading the underlying file, so must
+	happen ahead of time, so we aren't suddenly forced to read the
+	file while playing a displaylist back.
+*/
+void fz_prepare_t3_glyph(fz_context *ctx, fz_font *font, int gid);
+
+/**
+	Dump debug statistics for the glyph cache.
+*/
+void fz_dump_glyph_cache_stats(fz_context *ctx, fz_output *out);
+
+/**
+	Perform subpixel quantisation and adjustment on a glyph matrix.
+
+	ctm: On entry, the desired 'ideal' transformation for a glyph.
+	On exit, adjusted to a (very similar) transformation quantised
+	for subpixel caching.
+
+	subpix_ctm: Initialised by the routine to the transform that
+	should be used to render the glyph.
+
+	qe, qf: which subpixel position we quantised to.
+
+	Returns: the size of the glyph.
+
+	Note: This is currently only exposed for use in our app. It
+	should be considered "at risk" of removal from the API.
+*/
+float fz_subpixel_adjust(fz_context *ctx, fz_matrix *ctm, fz_matrix *subpix_ctm, unsigned char *qe, unsigned char *qf);
+
+#endif