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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qglflattextureeffect_p.h"
#include "qglabstracteffect_p.h"
#include "qglext_p.h"
#include <QOpenGLShaderProgram>
QT_BEGIN_NAMESPACE
/*!
\class QGLFlatTextureEffect
\since 4.8
\brief The QGLFlatTextureEffect class provides a standard effect that draws fragments with a flat unlit texture.
\ingroup qt3d
\ingroup qt3d::painting
\internal
*/
/*!
\class QGLFlatDecalTextureEffect
\since 4.8
\brief The QGLFlatDecalTextureEffect class provides a standard effect that decals fragments with a flat unlit texture.
\ingroup qt3d
\ingroup qt3d::painting
\internal
*/
class QGLFlatTextureEffectPrivate
{
public:
QGLFlatTextureEffectPrivate()
: program(0)
, matrixUniform(-1)
, isFixedFunction(false)
{
}
QOpenGLShaderProgram *program;
int matrixUniform;
bool isFixedFunction;
};
/*!
Constructs a new flat texture effect.
*/
QGLFlatTextureEffect::QGLFlatTextureEffect()
: d_ptr(new QGLFlatTextureEffectPrivate)
{
}
/*!
Destroys this flat texture effect.
*/
QGLFlatTextureEffect::~QGLFlatTextureEffect()
{
}
#if !defined(QGL_FIXED_FUNCTION_ONLY)
static char const flatTexVertexShader[] =
"attribute highp vec4 vertex;\n"
"attribute highp vec4 texcoord;\n"
"uniform highp mat4 matrix;\n"
"varying highp vec4 qt_TexCoord0;\n"
"void main(void)\n"
"{\n"
" gl_Position = matrix * vertex;\n"
" qt_TexCoord0 = texcoord;\n"
"}\n";
static char const flatTexFragmentShader[] =
"uniform sampler2D tex;\n"
"varying highp vec4 qt_TexCoord0;\n"
"void main(void)\n"
"{\n"
" gl_FragColor = texture2D(tex, qt_TexCoord0.st);\n"
"}\n";
static char const flatDecalFragmentShader[] =
"uniform sampler2D tex;\n"
"uniform mediump vec4 color;\n"
"varying highp vec4 qt_TexCoord0;\n"
"void main(void)\n"
"{\n"
" mediump vec4 col = texture2D(tex, qt_TexCoord0.st);\n"
" gl_FragColor = vec4(clamp(color.rgb * (1.0 - col.a) + col.rgb, 0.0, 1.0), color.a);\n"
"}\n";
#endif
/*!
\reimp
*/
void QGLFlatTextureEffect::setActive(QGLPainter *painter, bool flag)
{
#if defined(QGL_FIXED_FUNCTION_ONLY)
Q_UNUSED(painter);
if (flag) {
glEnableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
} else {
glDisableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_TEXTURE_2D);
}
#else
Q_UNUSED(painter);
Q_D(QGLFlatTextureEffect);
#if !defined(QGL_SHADERS_ONLY)
if (painter->isFixedFunction()) {
d->isFixedFunction = true;
if (flag) {
glEnableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
} else {
glDisableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_TEXTURE_2D);
}
return;
}
#endif
QOpenGLShaderProgram *program =
painter->cachedProgram(QLatin1String("qt.texture.flat.replace"));
d->program = program;
if (!program) {
if (!flag)
return;
program = new QOpenGLShaderProgram();
program->addShaderFromSourceCode(QOpenGLShader::Vertex, flatTexVertexShader);
program->addShaderFromSourceCode(QOpenGLShader::Fragment, flatTexFragmentShader);
program->bindAttributeLocation("vertex", QGL::Position);
program->bindAttributeLocation("texcoord", QGL::TextureCoord0);
if (!program->link()) {
qWarning("QGLFlatTextureEffect::setActive(): could not link shader program");
delete program;
program = 0;
return;
}
painter->setCachedProgram
(QLatin1String("qt.texture.flat.replace"), program);
d->program = program;
d->matrixUniform = program->uniformLocation("matrix");
program->bind();
program->setUniformValue("tex", 0);
program->enableAttributeArray(QGL::Position);
program->enableAttributeArray(QGL::TextureCoord0);
} else if (flag) {
d->matrixUniform = program->uniformLocation("matrix");
program->bind();
program->setUniformValue("tex", 0);
program->enableAttributeArray(QGL::Position);
program->enableAttributeArray(QGL::TextureCoord0);
} else {
program->disableAttributeArray(QGL::Position);
program->disableAttributeArray(QGL::TextureCoord0);
program->release();
}
#endif
}
/*!
\reimp
*/
void QGLFlatTextureEffect::update
(QGLPainter *painter, QGLPainter::Updates updates)
{
#if defined(QGL_FIXED_FUNCTION_ONLY)
painter->updateFixedFunction(updates & QGLPainter::UpdateMatrices);
#else
Q_D(QGLFlatTextureEffect);
#if !defined(QGL_SHADERS_ONLY)
if (d->isFixedFunction) {
painter->updateFixedFunction(updates & QGLPainter::UpdateMatrices);
return;
}
#endif
if ((updates & QGLPainter::UpdateMatrices) != 0) {
d->program->setUniformValue
(d->matrixUniform, painter->combinedMatrix());
}
#endif
}
class QGLFlatDecalTextureEffectPrivate
{
public:
QGLFlatDecalTextureEffectPrivate()
: program(0)
, matrixUniform(-1)
, colorUniform(-1)
, isFixedFunction(false)
{
}
QOpenGLShaderProgram *program;
int matrixUniform;
int colorUniform;
bool isFixedFunction;
};
/*!
Constructs a new flat decal texture effect.
*/
QGLFlatDecalTextureEffect::QGLFlatDecalTextureEffect()
: d_ptr(new QGLFlatDecalTextureEffectPrivate)
{
}
/*!
Destroys this flat decal texture effect.
*/
QGLFlatDecalTextureEffect::~QGLFlatDecalTextureEffect()
{
}
/*!
\reimp
*/
void QGLFlatDecalTextureEffect::setActive(QGLPainter *painter, bool flag)
{
#if defined(QGL_FIXED_FUNCTION_ONLY)
Q_UNUSED(painter);
if (flag) {
glEnableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
glEnable(GL_TEXTURE_2D);
} else {
glDisableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_TEXTURE_2D);
}
#else
Q_UNUSED(painter);
Q_D(QGLFlatDecalTextureEffect);
#if !defined(QGL_SHADERS_ONLY)
if (painter->isFixedFunction()) {
d->isFixedFunction = true;
if (flag) {
glEnableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
glEnable(GL_TEXTURE_2D);
} else {
glDisableClientState(GL_VERTEX_ARRAY);
qt_gl_ClientActiveTexture(GL_TEXTURE0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_TEXTURE_2D);
}
}
#endif
QOpenGLShaderProgram *program =
painter->cachedProgram(QLatin1String("qt.texture.flat.decal"));
d->program = program;
if (!program) {
if (!flag)
return;
program = new QOpenGLShaderProgram();
program->addShaderFromSourceCode(QOpenGLShader::Vertex, flatTexVertexShader);
program->addShaderFromSourceCode(QOpenGLShader::Fragment, flatDecalFragmentShader);
program->bindAttributeLocation("vertex", QGL::Position);
program->bindAttributeLocation("texcoord", QGL::TextureCoord0);
if (!program->link()) {
qWarning("QGLFlatDecalTextureEffect::setActive(): could not link shader program");
delete program;
program = 0;
return;
}
painter->setCachedProgram
(QLatin1String("qt.texture.flat.decal"), program);
d->program = program;
d->matrixUniform = program->uniformLocation("matrix");
d->colorUniform = program->uniformLocation("color");
program->bind();
program->setUniformValue("tex", 0);
program->enableAttributeArray(QGL::Position);
program->enableAttributeArray(QGL::TextureCoord0);
} else if (flag) {
d->matrixUniform = program->uniformLocation("matrix");
d->colorUniform = program->uniformLocation("color");
program->bind();
program->setUniformValue("tex", 0);
program->enableAttributeArray(QGL::Position);
program->enableAttributeArray(QGL::TextureCoord0);
} else {
program->disableAttributeArray(QGL::Position);
program->disableAttributeArray(QGL::TextureCoord0);
program->release();
}
#endif
}
/*!
\reimp
*/
void QGLFlatDecalTextureEffect::update
(QGLPainter *painter, QGLPainter::Updates updates)
{
#if defined(QGL_FIXED_FUNCTION_ONLY)
painter->updateFixedFunction
(updates & (QGLPainter::UpdateColor |
QGLPainter::UpdateMatrices));
#else
Q_D(QGLFlatDecalTextureEffect);
#if !defined(QGL_SHADERS_ONLY)
if (d->isFixedFunction) {
painter->updateFixedFunction
(updates & (QGLPainter::UpdateColor |
QGLPainter::UpdateMatrices));
return;
}
#endif
if ((updates & QGLPainter::UpdateColor) != 0)
d->program->setUniformValue(d->colorUniform, painter->color());
if ((updates & QGLPainter::UpdateMatrices) != 0) {
d->program->setUniformValue
(d->matrixUniform, painter->combinedMatrix());
}
#endif
}
QT_END_NAMESPACE
|
