src/gallium/auxiliary/hud/font.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2013 Marek Olšák <maraeo@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef FONT_H
  29 #define FONT_H
  30
  31 #include "pipe/p_compiler.h"
  32
  33 struct pipe_resource;
  34 struct pipe_context;
  35
  36 enum util_font_name {
  37    UTIL_FONT_FIXED_8X13
  38 };
  39
  40 /* The font is stored in a RECT texture. There are 256 glyphs
  41  * drawn in a 16x16 matrix. The texture coordinates of a glyph
  42  * within the matrix should be calculated as follows:
  43  *
  44  *    x1 = (glyph % 16) * glyph_width;
  45  *    y1 = (glyph / 16) * glyph_height;
  46  *    x2 = x1 + glyph_width;
  47  *    y2 = y1 + glyph_height;
  48  */
  49 struct util_font {
  50    struct pipe_resource *texture;
  51    unsigned glyph_width;
  52    unsigned glyph_height;
  53 };
  54
  55 boolean
  56 util_font_create(struct pipe_context *pipe, enum util_font_name name,
  57                          struct util_font *out_font);
  58
  59 #endif