1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/**
* @file llfontvertexbuffer.cpp
* @brief Buffer storage for font rendering.
*
* $LicenseInfo:firstyear=2024&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2024, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llfontvertexbuffer.h"
#include "llvertexbuffer.h"
LLFontVertexBuffer::LLFontVertexBuffer(bool track_changes)
: mTrackStringChanges(track_changes)
{
}
LLFontVertexBuffer::~LLFontVertexBuffer()
{
reset();
}
void LLFontVertexBuffer::reset()
{
mBufferList.clear();
}
S32 LLFontVertexBuffer::render(
const LLFontGL* fontp,
const LLWString& text,
S32 begin_offset,
F32 x, F32 y,
const LLColor4& color,
LLFontGL::HAlign halign, LLFontGL::VAlign valign,
U8 style, LLFontGL::ShadowType shadow,
S32 max_chars , S32 max_pixels,
F32* right_x,
bool use_ellipses,
bool use_color )
{
if (mBufferList.empty())
{
genBuffers(fontp, text, begin_offset, x, y, color, halign, valign,
style, shadow, max_chars, max_pixels, right_x, use_ellipses, use_color);
}
else if (mLastX != x || mLastY != y || mLastColor != color) // always track position and alphs
{
genBuffers(fontp, text, begin_offset, x, y, color, halign, valign,
style, shadow, max_chars, max_pixels, right_x, use_ellipses, use_color);
}
else if (true //mTrackStringChanges
&& (mLastOffset != begin_offset
|| mLastMaxChars != max_chars
|| mLastMaxPixels != max_pixels
|| mLastStringHash != sStringHasher._Do_hash(text))) // todo, track all parameters?
{
genBuffers(fontp, text, begin_offset, x, y, color, halign, valign,
style, shadow, max_chars, max_pixels, right_x, use_ellipses, use_color);
}
else
{
gGL.flush(); // deliberately empty pending verts
gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
gGL.pushUIMatrix();
gGL.loadUIIdentity();
// Depth translation, so that floating text appears 'in-world'
// and is correctly occluded.
gGL.translatef(0.f, 0.f, LLFontGL::sCurDepth);
gGL.setSceneBlendType(LLRender::BT_ALPHA);
for (auto &buf_data : mBufferList)
{
if (buf_data.mImage)
{
gGL.getTexUnit(0)->bind(buf_data.mImage);
}
else
{
gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
}
buf_data.mBuffer->setBuffer();
if (LLRender::sGLCoreProfile && buf_data.mMode == LLRender::QUADS)
{
buf_data.mBuffer->drawArrays(LLRender::TRIANGLES, 0, buf_data.mCount);
}
else
{
buf_data.mBuffer->drawArrays(buf_data.mMode, 0, buf_data.mCount);
}
}
if (right_x)
{
*right_x = mLastRightX;
}
gGL.popUIMatrix();
}
return mChars;
}
void LLFontVertexBuffer::genBuffers(
const LLFontGL* fontp,
const LLWString& text,
S32 begin_offset,
F32 x, F32 y,
const LLColor4& color,
LLFontGL::HAlign halign, LLFontGL::VAlign valign,
U8 style, LLFontGL::ShadowType shadow,
S32 max_chars, S32 max_pixels,
F32* right_x,
bool use_ellipses,
bool use_color)
{
mBufferList.clear();
mChars = fontp->render(text, begin_offset, x, y, color, halign, valign,
style, shadow, max_chars, max_pixels, right_x, use_ellipses, use_color, &mBufferList);
mLastOffset = begin_offset;
mLastMaxChars = max_chars;
mLastMaxPixels = max_pixels;
mLastStringHash = sStringHasher._Do_hash(text);
mLastX = x;
mLastY = y;
mLastColor = color;
if (right_x)
{
mLastRightX = *right_x;
}
}
|
