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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt scene graph research project.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "texturematerial.h"
#include <qglshaderprogram.h>
const char qt_scenegraph_texture_material_vertex_code[] =
"uniform highp mat4 qt_Matrix; \n"
"attribute highp vec4 qt_VertexPosition; \n"
"attribute highp vec2 qt_VertexTexCoord; \n"
"varying highp vec2 qt_TexCoord; \n"
"void main() { \n"
" qt_TexCoord = qt_VertexTexCoord; \n"
" gl_Position = qt_Matrix * qt_VertexPosition; \n"
"}";
const char qt_scenegraph_texture_material_fragment[] =
"varying highp vec2 qt_TexCoord; \n"
"uniform sampler2D qt_Texture; \n"
"void main() { \n"
" gl_FragColor = texture2D(qt_Texture, qt_TexCoord);\n"
"}";
const char *TextureMaterialData::vertexShader() const
{
return qt_scenegraph_texture_material_vertex_code;
}
const char *TextureMaterialData::fragmentShader() const
{
return qt_scenegraph_texture_material_fragment;
}
const TextureMaterialData::Attributes TextureMaterialData::attributes() const
{
Attributes attr = {
attributeIds,
attributeNames
};
return attr;
}
const QGL::VertexAttribute *TextureMaterialData::requiredFields() const
{
return attributeIds;
}
AbstractEffectType TextureMaterialData::type;
const QGL::VertexAttribute TextureMaterialData::attributeIds[] = {
QGL::Position,
QGL::TextureCoord0,
QGL::VertexAttribute(-1)
};
const char *const TextureMaterialData::attributeNames[] = {
"qt_VertexPosition",
"qt_VertexTexCoord",
0
};
void TextureMaterialData::initialize()
{
AbstractShaderEffectProgram::initialize();
m_matrix_id = m_program.uniformLocation("qt_Matrix");
}
void TextureMaterialData::updateRendererState(Renderer *renderer, Renderer::Updates updates)
{
if (updates & Renderer::UpdateMatrices)
m_program.setUniformValue(m_matrix_id, renderer->combinedMatrix());
}
void TextureMaterialData::updateEffectState(Renderer *renderer, AbstractEffect *newEffect, AbstractEffect *oldEffect)
{
Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
TextureMaterial *tx = static_cast<TextureMaterial *>(newEffect);
TextureMaterial *oldTx = static_cast<TextureMaterial *>(oldEffect);
if (oldEffect == 0 || tx->texture().texture() != oldTx->texture().texture()) {
renderer->setTexture(0, tx->texture());
oldEffect = 0; // Force filtering update.
}
if (oldEffect == 0 || tx->linearFiltering() != oldTx->linearFiltering()) {
int filtering = tx->linearFiltering() ? GL_LINEAR : GL_NEAREST;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
}
}
void TextureMaterial::setTexture(const QSGTextureRef &texture, bool opaque)
{
m_texture = texture;
m_opaque = opaque;
setFlags(opaque ? Flag(0) : Blending);
}
AbstractEffectType *TextureMaterial::type() const
{
return &TextureMaterialData::type;
}
AbstractEffectProgram *TextureMaterial::createProgram() const
{
return new TextureMaterialData;
}
int TextureMaterial::compare(const AbstractEffect *o) const
{
Q_ASSERT(o && type() == o->type());
const TextureMaterial *other = static_cast<const TextureMaterial *>(o);
if (int diff = m_texture->textureId() - other->texture()->textureId())
return diff;
return int(m_linear_filtering) - int(other->m_linear_filtering);
}
bool TextureMaterial::is(const AbstractEffect *effect)
{
return effect->type() == &TextureMaterialData::type;
}
// TextureMaterialWithOpacity
static const char qt_scenegraph_texture_material_opacity_fragment[] =
"varying highp vec2 qt_TexCoord; \n"
"uniform sampler2D qt_Texture; \n"
"uniform lowp float opacity; \n"
"void main() { \n"
" gl_FragColor = texture2D(qt_Texture, qt_TexCoord) * opacity; \n"
"}";
class TextureMaterialWithOpacityData : public TextureMaterialData
{
public:
virtual void updateEffectState(Renderer *renderer, AbstractEffect *newEffect, AbstractEffect *oldEffect);
virtual void initialize();
virtual const char *fragmentShader() const { return qt_scenegraph_texture_material_opacity_fragment; }
static AbstractEffectType type;
int m_opacity_id;
};
AbstractEffectType TextureMaterialWithOpacityData::type;
bool TextureMaterialWithOpacity::is(const AbstractEffect *effect)
{
return effect->type() == &TextureMaterialWithOpacityData::type;
}
AbstractEffectType *TextureMaterialWithOpacity::type() const
{
return &TextureMaterialWithOpacityData::type;
}
void TextureMaterialWithOpacity::setOpacity(qreal opacity)
{
m_opacity = opacity;
setFlags(m_opaque && opacity == 1 ? Flag(0) : Blending);
}
int TextureMaterialWithOpacity::compare(const AbstractEffect *o) const
{
Q_ASSERT(o && type() == o->type());
const TextureMaterialWithOpacity *other = static_cast<const TextureMaterialWithOpacity *>(o);
if (int diff = m_texture->textureId() - other->texture()->textureId())
return diff;
if (int diff = int(m_linear_filtering) - int(other->m_linear_filtering))
return diff;
return int(other->m_opacity < m_opacity) - int(m_opacity < other->m_opacity);
}
void TextureMaterialWithOpacity::setTexture(const QSGTextureRef &texture, bool opaque)
{
m_texture = texture;
m_opaque = opaque;
setFlags(opaque && m_opacity == 1 ? Flag(0) : Blending);
}
AbstractEffectProgram *TextureMaterialWithOpacity::createProgram() const
{
return new TextureMaterialWithOpacityData;
}
void TextureMaterialWithOpacityData::updateEffectState(Renderer *renderer, AbstractEffect *newEffect, AbstractEffect *oldEffect)
{
Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type());
TextureMaterialWithOpacity *tx = static_cast<TextureMaterialWithOpacity *>(newEffect);
TextureMaterialWithOpacity *oldTx = static_cast<TextureMaterialWithOpacity *>(oldEffect);
if (oldEffect == 0 || tx->texture().texture() != oldTx->texture().texture()) {
renderer->setTexture(0, tx->texture());
oldEffect = 0; // Force filtering update.
}
if (oldEffect == 0 || tx->linearFiltering() != oldTx->linearFiltering()) {
int filtering = tx->linearFiltering() ? GL_LINEAR : GL_NEAREST;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
}
if (oldTx == 0 || tx->opacity() != oldTx->opacity())
m_program.setUniformValue(m_opacity_id, (GLfloat) tx->opacity());
}
void TextureMaterialWithOpacityData::initialize()
{
TextureMaterialData::initialize();
m_opacity_id = m_program.uniformLocation("opacity");
}
|
