projects/mde: mde/font/FontTexture.d annotate

annotate mde/font/FontTexture.d @ 98:49e7cfed4b34

All types of Option have been converted to use ValueContent classes, and their values can be displayed.

author	Diggory Hardy <diggory.hardy@gmail.com>
date	Wed, 12 Nov 2008 13:18:51 +0000
parents	30470bc19ca4
children	0ea4a3e651ae

rev	line source
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	1 /* LICENSE BLOCK
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	2 Part of mde: a Modular D game-oriented Engine
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	3 Copyright © 2007-2008 Diggory Hardy
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	4
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	5 This program is free software: you can redistribute it and/or modify it under the terms
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	6 of the GNU General Public License as published by the Free Software Foundation, either
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	7 version 2 of the License, or (at your option) any later version.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	8
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	11 See the GNU General Public License for more details.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	12
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	13 You should have received a copy of the GNU General Public License
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	15
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	16 /** Font caching system.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	17 *
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	18 * This module also serves as the internals to the font module and shouldn't be used except through
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	19 * the font module. The two modules could be combined, at a cost to readability.
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	20 *
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	21 * Three types of coordinates get used in the system: FreeType coordinates for each glyph, texture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	22 * coordinates, and OpenGL's model/world coordinates (for rendering). The freetype and texture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	23 * coords are cartesian (i.e. y increases upwards), although largely this is too abstract to
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	24 * matter. However, for the model/world coords, y increases downwards. */
63 66d555da083e Moved many modules/packages to better reflect usage. Diggory Hardy <diggory.hardy@gmail.com> parents: 61 diff changeset	25 module mde.font.FontTexture;
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	26
63 66d555da083e Moved many modules/packages to better reflect usage. Diggory Hardy <diggory.hardy@gmail.com> parents: 61 diff changeset	27 import mde.types.Colour;
66d555da083e Moved many modules/packages to better reflect usage. Diggory Hardy <diggory.hardy@gmail.com> parents: 61 diff changeset	28 import mde.lookup.Options;
66d555da083e Moved many modules/packages to better reflect usage. Diggory Hardy <diggory.hardy@gmail.com> parents: 61 diff changeset	29 import mde.font.exception;
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	30
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	31 import derelict.freetype.ft;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	32 import derelict.opengl.gl;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	33
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	34 import Utf = tango.text.convert.Utf;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	35 import tango.util.log.Log : Log, Logger;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	36
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	37 private Logger logger;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	38 static this () {
63 66d555da083e Moved many modules/packages to better reflect usage. Diggory Hardy <diggory.hardy@gmail.com> parents: 61 diff changeset	39 logger = Log.getLogger ("mde.font.FontTexture");
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	40 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	41
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	42 static const int dimW = 256, dimH = 256; // Texture size
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	43 const wFactor = 1f / dimW;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	44 const hFactor = 1f / dimH;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	45
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	46 /** A FontTexture is basically a cache of all font glyphs rendered so far.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	47 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	48 * This class should be limited to code for rendering to (and otherwise handling) textures and
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	49 * rendering fonts to the screen.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	50 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	51 * Technically, there's no reason it shouldn't be a static part of the FontStyle class. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	52 class FontTexture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	53 {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	54 // Call if font(s) have been changed and glyphs must be recached.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	55 void clear () {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	56 foreach (t; tex) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	57 glDeleteTextures (1, &(t.texID));
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	58 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	59 cachedGlyphs = null;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	60 ++cacheVer;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	61 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	62
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	63
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	64 /** Cache informatation for rendering a block of text.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	65 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	66 * Recognises '\r', '\n' and "\r\n" as end-of-line markers. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	67 void updateCache (FT_Face face, char[] str, ref TextBlock cache)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	68 {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	69 debug scope (failure)
53 f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	70 logger.error ("updateCache failed");
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	71
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	72 if (cache.cacheVer == cacheVer) // Existing cache is up-to-date
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	73 return;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	74
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	75 cache.cacheVer = cacheVer;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	76
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	77 /* Convert the string to an array of character codes (which is equivalent to decoding UTF8
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	78 * to UTF32 since no character code is ever > dchar.max). */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	79 static dchar[] chrs; // keep memory for future calls (NOTE: change for threading)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	80 chrs = Utf.toString32 (str, chrs);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	81
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	82 // Allocate space.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	83 // Since end-of-line chars get excluded, will often be slightly larger than necessary.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	84 cache.chars.length = chrs.length;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	85 cache.chars.length = 0;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	86
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	87 int lineSep = face.size.metrics.height >> 6;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	88 bool hasKerning = (FT_HAS_KERNING (face) != 0);
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	89 int y = face.size.metrics.ascender >> 6;
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	90 CharCache cc; // struct; reused for each character
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	91
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	92 for (size_t i = 0; i < chrs.length; ++i)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	93 {
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	94 // For each line:
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	95 int x = 0; // x pos for next glyph
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	96 uint gi_prev = 0; // previous glyph index (needed for kerning)
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	97
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	98 for (; i < chrs.length; ++i)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	99 {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	100 // If end-of-line, break to find yMax for next line.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	101 if (chrs.length >= i+2 && chrs[i..i+2] == "\r\n"d) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	102 ++i;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	103 break;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	104 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	105 if (chrs[i] == '\n' \|\| chrs[i] == '\r') {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	106 break;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	107 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	108
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	109 cc.ga = chrs[i] in cachedGlyphs;
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	110 if (cc.ga is null) { // Not cached
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	111 addGlyph (face, chrs[i]); // so render it
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	112 cc.ga = chrs[i] in cachedGlyphs; // get the ref of the copy we've stored
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	113 assert (cc.ga !is null, "Unable to cache glyph!");
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	114 }
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	115
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	116 // Kerning
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	117 if (hasKerning && (gi_prev != 0)) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	118 FT_Vector delta;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	119 FT_Get_Kerning (face, gi_prev, cc.ga.index, FT_Kerning_Mode.FT_KERNING_DEFAULT, &delta);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	120 x += delta.x >> 6;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	121 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	122
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	123 // ga.left component: adding this slightly improves glyph layout. Note that the
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	124 // left-most glyph on a line may not start right on the edge, but this looks best.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	125 cc.xPos = x + cc.ga.left;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	126 cc.yPos = y - cc.ga.top;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	127 x += cc.ga.advanceX;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	128
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	129 cache.chars ~= cc;
49 bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	130
bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	131 // Update rect total size. Top and left coords should be zero, so make width and
bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	132 // height maximal x and y coordinates.
bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	133 if (cc.xPos + cc.ga.w > cache.w)
bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	134 cache.w = cc.xPos + cc.ga.w;
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	135 /+if (cc.yPos + cc.ga.h > cache.h)
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	136 cache.h = cc.yPos + cc.ga.h;+/
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	137 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	138 // Now increment i and continue with the next line if there is one.
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	139 y += lineSep;
97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	140 cache.h += lineSep;
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	141 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	142 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	143
57 9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	144 /** Render a block of text using a cache. Updates the cache if necessary.
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	145 *
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	146 * Params:
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	147 * face = Current typeface pointer; must be passed from font.d (only needed if the cache is
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	148 * invalid)
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	149 * str = Text to render (only needed if the cache is invalid)
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	150 * cache = Cache used to speed up CPU-side rendering code
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	151 * x = Smaller x-coordinate of position
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	152 * y = Smaller y-coordinate of position
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	153 * col = Text colour (note: currently limited to black or white) */
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	154 void drawCache (FT_Face face, char[] str, ref TextBlock cache, int x, int y, Colour col ) {
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	155 updateCache (face, str, cache); // update if necessary
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	156 debug scope (failure)
53 f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	157 logger.error ("drawTextCache failed");
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	158
57 9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	159 // opaque (GL_DECAL would be equivalent)
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	160 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	161
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	162 drawCacheImpl (cache, x, y, col);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	163 }
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	164 /** A variation of drawCache, for transparent text.
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	165 *
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	166 * Instead of passing the alpha value(s) as arguments, set the openGL colour prior to calling:
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	167 * ---
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	168 * glColor3f (.5f, .5f, .5f); // set alpha to half
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	169 * drawCacheA (face, ...);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	170 *
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	171 * glColor3ub (0, 255, 127); // alpha 0 for red, 1 for green, half for blue
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	172 * drawCacheA (face, ...);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	173 * ---
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	174 *
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	175 * The overhead of the transparency is minimal. */
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	176 void drawCacheA (FT_Face face, char[] str, ref TextBlock cache, int x, int y, Colour col/+ = Colour.WHITE+/) {
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	177 updateCache (face, str, cache); // update if necessary
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	178 debug scope (failure)
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	179 logger.error ("drawTextCache failed");
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	180
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	181 // transparency alpha
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	182 // alpha is current colour, per component
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	183 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	184
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	185 drawCacheImpl (cache, x, y, col);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	186 }
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	187
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	188 private void drawCacheImpl (ref TextBlock cache, int x, int y, Colour col) {
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	189 if (DerelictGL.availableVersion() >= GLVersion.Version14) {
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	190 glBlendFunc (GL_CONSTANT_COLOR, GL_ONE_MINUS_SRC_COLOR);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	191 glBlendColor(col.r, col.g, col.b, 1f); // text colour
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	192 } else
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	193 glBlendFunc (col.nearestGLConst, GL_ONE_MINUS_SRC_COLOR);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	194
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	195 glEnable (GL_TEXTURE_2D);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	196 glEnable(GL_BLEND);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	197
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	198 foreach (chr; cache.chars) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	199 GlyphAttribs* ga = chr.ga;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	200
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	201 glBindTexture(GL_TEXTURE_2D, ga.texID);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	202
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	203 int x1 = x + chr.xPos;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	204 int y1 = y + chr.yPos;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	205 int x2 = x1 + ga.w;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	206 int y2 = y1 + ga.h;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	207 float tx1 = ga.x * wFactor;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	208 float ty1 = ga.y * hFactor;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	209 float tx2 = (ga.x + ga.w) * wFactor;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	210 float ty2 = (ga.y + ga.h) * hFactor;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	211
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	212 glBegin (GL_QUADS);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	213 glTexCoord2f (tx1, ty1); glVertex2i (x1, y1);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	214 glTexCoord2f (tx2, ty1); glVertex2i (x2, y1);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	215 glTexCoord2f (tx2, ty2); glVertex2i (x2, y2);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	216 glTexCoord2f (tx1, ty2); glVertex2i (x1, y2);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	217 glEnd ();
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	218 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	219
97 30470bc19ca4 Floating widgets now work nicely: customizable borders added, resizing, moving. Diggory Hardy <diggory.hardy@gmail.com> parents: 96 diff changeset	220 glDisable(GL_TEXTURE_2D);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	221 glDisable(GL_BLEND);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	222 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	223
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	224 void addGlyph (FT_Face face, dchar chr) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	225 debug scope (failure)
53 f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	226 logger.error ("FontTexture.addGlyph failed!");
49 bca7e2342d77 Enabled getting the size of a text block (before or after rendering). Diggory Hardy <diggory.hardy@gmail.com> parents: 48 diff changeset	227
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	228 auto gi = FT_Get_Char_Index (face, chr);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	229 auto g = face.glyph;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	230
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	231 // Use renderMode from options, masking bits which are allowable:
98 49e7cfed4b34 All types of Option have been converted to use ValueContent classes, and their values can be displayed. Diggory Hardy <diggory.hardy@gmail.com> parents: 97 diff changeset	232 if (FT_Load_Glyph (face, gi, FT_LOAD_RENDER \| (fontOpts.renderMode() & 0xF0000)))
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	233 throw new fontGlyphException ("Unable to render glyph");
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	234
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	235 auto b = g.bitmap;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	236 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	237 //glPixelStorei (GL_UNPACK_ROW_LENGTH, b.pitch);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	238
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	239 GlyphAttribs ga;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	240 ga.w = b.width;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	241 ga.h = b.rows;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	242 ga.left = g.bitmap_left;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	243 ga.top = g.bitmap_top;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	244 ga.advanceX = g.advance.x >> 6;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	245 ga.index = gi;
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	246 if (b.pixel_mode == FT_Pixel_Mode.FT_PIXEL_MODE_LCD)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	247 ga.w /= 3;
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	248 if (b.pixel_mode == FT_Pixel_Mode.FT_PIXEL_MODE_LCD_V)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	249 ga.h /= 3;
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	250
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	251 foreach (ref t; tex) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	252 if (t.addGlyph (ga))
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	253 goto gotTexSpace;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	254 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	255 // if here, no existing texture had the room for the glyph so create a new texture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	256 // NOTE: check if using more than one texture impacts performance due to texture switching
96 dbf332403c6e Improvements to FloatingAreaWidget: positioning, passing click events and draw order. Diggory Hardy <diggory.hardy@gmail.com> parents: 94 diff changeset	257 debug logger.trace ("Creating a new font texture.");
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	258 tex ~= TexPacker.create();
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	259 assert (tex[$-1].addGlyph (ga), "Failed to fit glyph in a new texture but addGlyph didn't throw");
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	260
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	261 gotTexSpace:
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	262 glBindTexture(GL_TEXTURE_2D, ga.texID);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	263 GLenum format;
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	264 ubyte[] buffer; // use our own pointer, since for LCD modes we need to perform a conversion
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	265 if (b.pixel_mode == FT_Pixel_Mode.FT_PIXEL_MODE_GRAY && b.num_grays == 256) {
53 f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	266 assert (b.pitch == b.width, "Have assumed b.pitch == b.width for gray glyphs.");
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	267 buffer = b.buffer[0..b.pitch*b.rows];
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	268 format = GL_LUMINANCE;
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	269 } else if (b.pixel_mode == FT_Pixel_Mode.FT_PIXEL_MODE_LCD) {
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	270 // NOTE: Can't seem to get OpenGL to read freetype's RGB buffers properly, so convent.
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	271 /* NOTE: Sub-pixel rendering probably also needs filtering. I haven't tried, since it's
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	272 * disabled in my build of the library. For a tutorial on the filtering, see:
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	273 * http://dmedia.dprogramming.com/?n=Tutorials.TextRendering1 */
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	274 buffer = new ubyte[b.width*b.rows];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	275 for (uint i = 0; i < b.rows; ++i)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	276 for (uint j = 0; j < b.width; j+= 3)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	277 {
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	278 buffer[ib.width + j + 0] = b.buffer[ib.pitch + j + 0];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	279 buffer[ib.width + j + 1] = b.buffer[ib.pitch + j + 1];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	280 buffer[ib.width + j + 2] = b.buffer[ib.pitch + j + 2];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	281 }
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	282
98 49e7cfed4b34 All types of Option have been converted to use ValueContent classes, and their values can be displayed. Diggory Hardy <diggory.hardy@gmail.com> parents: 97 diff changeset	283 format = (fontOpts.renderMode() & RENDER_LCD_BGR) ? GL_BGR : GL_RGB;
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	284 } else if (b.pixel_mode == FT_Pixel_Mode.FT_PIXEL_MODE_LCD_V) {
83 2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	285 // NOTE: Notes above apply. But in this case converting the buffers seems essential.
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	286 buffer = new ubyte[b.width*b.rows];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	287 for (uint i = 0; i < b.rows; ++i)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	288 for (uint j = 0; j < b.width; ++j)
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	289 {
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	290 // i/3 is the "real" row, b.width*3 is our width (with subpixels), j is column,
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	291 // i%3 is sub-pixel (R/G/B). i/3*3 necessary to round to multiple of 3
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	292 buffer[i/3b.width3 + 3j + i%3] = b.buffer[ib.pitch + j];
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	293 }
387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	294
98 49e7cfed4b34 All types of Option have been converted to use ValueContent classes, and their values can be displayed. Diggory Hardy <diggory.hardy@gmail.com> parents: 97 diff changeset	295 format = (fontOpts.renderMode() & RENDER_LCD_BGR) ? GL_BGR : GL_RGB;
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	296 } else
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	297 throw new fontGlyphException ("Unsupported freetype bitmap format");
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	298
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	299 glTexSubImage2D(GL_TEXTURE_2D, 0,
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	300 ga.x, ga.y,
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	301 ga.w, ga.h,
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	302 format, GL_UNSIGNED_BYTE,
51 387a80724c35 Enabled LCD font rendering mode (only tested with freetype's sub-pixel rendering disabled). Diggory Hardy <diggory.hardy@gmail.com> parents: 50 diff changeset	303 cast(void*) buffer.ptr);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	304
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	305 cachedGlyphs[chr] = ga;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	306 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	307
61 7cab2af4ba21 A little bit of progress on the content handling system (relevent code is likely to be revised). Diggory Hardy <diggory.hardy@gmail.com> parents: 57 diff changeset	308 // Draw the first glyph cache texture in the upper-left corner of the screen.
7cab2af4ba21 A little bit of progress on the content handling system (relevent code is likely to be revised). Diggory Hardy <diggory.hardy@gmail.com> parents: 57 diff changeset	309 debug (drawGlyphCache) void drawTexture () {
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	310 if (tex.length == 0) return;
57 9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	311 glEnable (GL_TEXTURE_2D);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	312 glBindTexture(GL_TEXTURE_2D, tex[0].texID);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	313 glEnable(GL_BLEND);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	314 glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_COLOR);
57 9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	315 float[4] Cc = [ 1.0f, 1f, 1f, 1f ];
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	316 glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, Cc.ptr);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	317
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	318 glBegin (GL_QUADS);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	319 glTexCoord2f (0f, 0f); glVertex2i (0, 0);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	320 glTexCoord2f (1f, 0f); glVertex2i (dimW, 0);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	321 glTexCoord2f (1f, 1f); glVertex2i (dimW, dimH);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	322 glTexCoord2f (0f, 1f); glVertex2i (0, dimH);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	323 glEnd ();
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	324
97 30470bc19ca4 Floating widgets now work nicely: customizable borders added, resizing, moving. Diggory Hardy <diggory.hardy@gmail.com> parents: 96 diff changeset	325 glDisable(GL_TEXTURE_2D);
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	326 glDisable(GL_BLEND);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	327 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	328
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	329 private:
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	330 TexPacker[] tex; // contains the gl texture id and packing data
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	331
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	332 GlyphAttribs[dchar] cachedGlyphs;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	333 int cacheVer = 0; // version of cache, used to make sure TextBlock caches are current.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	334 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	335
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	336 // Use LinePacker for our texture packer:
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	337 alias LinePacker TexPacker;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	338
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	339 /** Represents one gl texture; packs glyphs into lines. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	340 struct LinePacker
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	341 {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	342 // create a new texture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	343 static LinePacker create () {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	344 LinePacker p;
89 97e6dce08037 Solved some/removed some obsolete jobs/FIXMEs (excluding from gui code). General cleanup. Diggory Hardy <diggory.hardy@gmail.com> parents: 86 diff changeset	345 //FIXME (gl): why do I get a blank texture when binding to non-0?
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	346 //glGenTextures (1, &(p.texID));
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	347 p.texID = 0;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	348
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	349 // add a pretty background to the texture
61 7cab2af4ba21 A little bit of progress on the content handling system (relevent code is likely to be revised). Diggory Hardy <diggory.hardy@gmail.com> parents: 57 diff changeset	350 debug (drawGlyphCache) {
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	351 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	352 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	353 ubyte[3][dimH][dimW] testTex;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	354 for (size_t i = 0; i < dimW; ++i)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	355 for (size_t j = 0; j < dimH; ++j)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	356 {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	357 testTex[i][j][0] = cast(ubyte) (i + j);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	358 testTex[i][j][1] = cast(ubyte) i;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	359 testTex[i][j][2] = cast(ubyte) j;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	360 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	361 void* ptr = testTex.ptr;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	362 } else
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	363 const void* ptr = null;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	364
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	365 // Create a texture without initialising values.
57 9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	366 glBindTexture(GL_TEXTURE_2D, p.texID);
9e1f05fbbcef Coloured and alpha-blended text is now supported. Diggory Hardy <diggory.hardy@gmail.com> parents: 53 diff changeset	367 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	368 dimW, dimH, 0,
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	369 GL_RGB, GL_UNSIGNED_BYTE, ptr);
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	370 return p;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	371 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	372
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	373 /** Find space for a glyph of size attr.w, attr.h within the texture.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	374 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	375 * Throws: fontGlyphException if glyph dimensions are larger than the texture.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	376 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	377 * Returns false if unable to fit the glyph into the texture, true if successful. If
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	378 * successful, attr's x and y are set to suitible positions such that the rect given by attr's
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	379 * x, y, w & h is a valid subregion of the texture. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	380 bool addGlyph (ref GlyphAttribs attr) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	381 if (attr.w > dimW \|\| attr.h > dimH)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	382 throw new fontGlyphException ("Glyph too large to fit texture!");
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	383
53 f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	384 attr.texID = texID; // Set now. Possibly reset if new texture is needed.
f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	385 if (attr.w == 0) return true; // 0 sized glyph; x and y are unimportant.
f000d6cd0f74 Changes to paths, command line arguments and font LCD rendering. Diggory Hardy <diggory.hardy@gmail.com> parents: 51 diff changeset	386
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	387 bool cantFitExtraLine = nextYPos + attr.h >= dimH;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	388 foreach (ref line; lines) {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	389 if (line.length + attr.w <= dimW && // if sufficient length and
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	390 line.height >= attr.h && // sufficient height and
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	391 (cantFitExtraLine \|\| // either there's not room for another line
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	392 line.height <= attr.h * WASTE_H)) // or we're not wasting much vertical space
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	393 { // then use this line
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	394 attr.x = line.length;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	395 attr.y = line.yPos;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	396 attr.texID = texID;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	397 line.length += attr.w;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	398 return true;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	399 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	400 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	401 // If we didn't return, we didn't use an existing line.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	402 if (cantFitExtraLine) // run out of room
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	403 return false;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	404
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	405 // Still room: add a new line. The new line has the largest yPos (furthest down texture),
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	406 // but the lines array must remain ordered by line height (lowest to heighest).
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	407 Line line;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	408 line.yPos = nextYPos;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	409 line.height = attr.h * EXTRA_H;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	410 line.length = attr.w;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	411 size_t i = 0;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	412 while (i < lines.length && lines[i].height < line.height) ++i;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	413 lines = lines[0..i] ~ line ~ lines[i..$]; // keep lines sorted by height
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	414 nextYPos += line.height;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	415
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	416 attr.x = 0; // first glyph in the line
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	417 attr.y = line.yPos;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	418 return true;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	419 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	420
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	421 // Publically accessible data:
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	422 uint texID; // OpenGL texture identifier (for BindTexture)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	423
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	424 private:
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	425 const WASTE_H = 1.3;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	426 const EXTRA_H = 1; // can be float/double, just experimenting with 1
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	427 struct Line {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	428 int yPos; // y position (xPos is always 0)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	429 int height;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	430 int length;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	431 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	432 Line[] lines;
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	433 int nextYPos = 0; // y position for next created line (0 for first line)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	434 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	435
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	436 // this bit of renderMode, if set, means read glyph as BGR not RGB when using LCD rendering
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	437 enum { RENDER_LCD_BGR = 1 << 30 }
94 9520cc0448e5 Boolean options are now encapsulated within a Content class (currently an experiment). Diggory Hardy <diggory.hardy@gmail.com> parents: 89 diff changeset	438 FontOptions fontOpts;
9520cc0448e5 Boolean options are now encapsulated within a Content class (currently an experiment). Diggory Hardy <diggory.hardy@gmail.com> parents: 89 diff changeset	439 class FontOptions : Options {
83 2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	440 /* renderMode have one of the following values, possibly with bit 31 set (see RENDER_LCD_BGR):
2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	441 * FT_LOAD_TARGET_NORMAL (0x00000)
2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	442 * FT_LOAD_TARGET_LIGHT (0x10000)
2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	443 * FT_LOAD_TARGET_LCD (0x30000)
2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	444 * FT_LOAD_TARGET_LCD_V (0x40000)
2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	445 * The mode FT_LOAD_TARGET_MONO (0x20000) is unsupported.
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	446 *
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	447 * lcdFilter should come from enum FT_LcdFilter:
83 2813ac68576f Start of creating a separate gui demo module and leaving mde.d for testing. Diggory Hardy <diggory.hardy@gmail.com> parents: 63 diff changeset	448 * FT_LCD_FILTER_NONE (0), FT_LCD_FILTER_DEFAULT (1), FT_LCD_FILTER_LIGHT (2) */
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	449 mixin (impl!("int renderMode, lcdFilter;"));
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	450
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	451 static this() {
94 9520cc0448e5 Boolean options are now encapsulated within a Content class (currently an experiment). Diggory Hardy <diggory.hardy@gmail.com> parents: 89 diff changeset	452 fontOpts = new FontOptions;
9520cc0448e5 Boolean options are now encapsulated within a Content class (currently an experiment). Diggory Hardy <diggory.hardy@gmail.com> parents: 89 diff changeset	453 Options.addOptionsClass (fontOpts, "FontOptions");
50 f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	454 }
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	455 }
f68ae1d667f9 Options: impl template & new OptionsFont class. Diggory Hardy <diggory.hardy@gmail.com> parents: 49 diff changeset	456
48 a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	457 struct GlyphAttribs {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	458 int x, y; // position within texture
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	459 int w, h; // bitmap size
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	460
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	461 int left, top; // bitmap_left, bitmap_top fields
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	462 int advanceX; // horizontal advance distance
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	463 uint index; // glyph index (within face)
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	464
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	465 uint texID; // gl tex identifier
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	466 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	467
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	468 /** Cached information for drawing a block of text.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	469 *
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	470 * Struct should be stored externally and updated via references. */
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	471 struct TextBlock {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	472 CharCache[] chars; // All chars. They hold x & y pos. info, so don't need to know about lines.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	473 int cacheVer = -1; // this is checked on access, and must equal for cache to be valid.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	474 int w, h; /// Size of the block. Likely the only fields of use outside the library.
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	475 }
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	476 struct CharCache {
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	477 GlyphAttribs* ga; // character
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	478 int xPos, yPos; // x,y position
a98ffb64f066 Implemented font rendering (grayscale only; i.e. non-LCD). Diggory Hardy <diggory.hardy@gmail.com> parents: diff changeset	479 }

Mercurial > projects > mde

annotate mde/font/FontTexture.d @ 98:49e7cfed4b34