qopengltextureglyphcache.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/gui/opengl/qopengltextureglyphcache.cpp
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4-
5QBasicAtomicInt qopengltextureglyphcache_serial_number = { 1 };-
6-
7QOpenGLTextureGlyphCache::QOpenGLTextureGlyphCache(QFontEngine::GlyphFormat format, const QTransform &matrix)-
8 : QImageTextureGlyphCache(format, matrix)-
9 , m_textureResource(0)-
10 , pex(0)-
11 , m_blitProgram(0)-
12 , m_filterMode(Nearest)-
13 , m_serialNumber(qopengltextureglyphcache_serial_number.fetchAndAddRelaxed(1))-
14 , m_buffer(QOpenGLBuffer::VertexBuffer)-
15{-
16-
17-
18-
19 m_vertexCoordinateArray[0] = -1.0f;-
20 m_vertexCoordinateArray[1] = -1.0f;-
21 m_vertexCoordinateArray[2] = 1.0f;-
22 m_vertexCoordinateArray[3] = -1.0f;-
23 m_vertexCoordinateArray[4] = 1.0f;-
24 m_vertexCoordinateArray[5] = 1.0f;-
25 m_vertexCoordinateArray[6] = -1.0f;-
26 m_vertexCoordinateArray[7] = 1.0f;-
27-
28 m_textureCoordinateArray[0] = 0.0f;-
29 m_textureCoordinateArray[1] = 0.0f;-
30 m_textureCoordinateArray[2] = 1.0f;-
31 m_textureCoordinateArray[3] = 0.0f;-
32 m_textureCoordinateArray[4] = 1.0f;-
33 m_textureCoordinateArray[5] = 1.0f;-
34 m_textureCoordinateArray[6] = 0.0f;-
35 m_textureCoordinateArray[7] = 1.0f;-
36}
never executed: end of block
0
37-
38QOpenGLTextureGlyphCache::~QOpenGLTextureGlyphCache()-
39{-
40-
41-
42-
43 clear();-
44}
never executed: end of block
0
45-
46-
47static inline bool isCoreProfile()-
48{-
49 return
never executed: return QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile;
 QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile;
never executed: return QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile;
0
50}-
51-
52-
53void QOpenGLTextureGlyphCache::createTextureData(int width, int height)-
54{-
55 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
56 if (ctx == 0
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
57 QMessageLogger(__FILE__, 96, __PRETTY_FUNCTION__).warning("QOpenGLTextureGlyphCache::createTextureData: Called with no context");-
58 return;
never executed: return;
0
59 }-
60-
61-
62-
63-
64 if (ctx->d_func()->workaround_brokenFBOReadBack
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
 && image().isNull()
image().isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
65 QImageTextureGlyphCache::createTextureData(width, height);
never executed: QImageTextureGlyphCache::createTextureData(width, height);
0
66-
67-
68 if (width < 16
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
69 width = 16;
never executed: width = 16;
0
70 if (height < 16
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
71 height = 16;
never executed: height = 16;
0
72-
73 if (m_textureResource
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
 && !m_textureResource->m_texture
!m_textureResource->m_textureDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
74 delete m_textureResource;-
75 m_textureResource = 0;-
76 }
never executed: end of block
0
77-
78 if (!m_textureResource
!m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
79 m_textureResource = new QOpenGLGlyphTexture(ctx);
never executed: m_textureResource = new QOpenGLGlyphTexture(ctx);
0
80-
81 QOpenGLFunctions *funcs = ctx->functions();-
82 funcs->glGenTextures(1, &m_textureResource->m_texture);-
83 funcs->glBindTexture(0x0DE1, m_textureResource->m_texture);-
84-
85 m_textureResource->m_width = width;-
86 m_textureResource->m_height = height;-
87-
88 if (m_format == QFontEngine::Format_A32
m_format == QF...ne::Format_A32Description
TRUEnever evaluated
FALSEnever evaluated
 || m_format == QFontEngine::Format_ARGB
m_format == QF...e::Format_ARGBDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
89 QVarLengthArray<uchar> data(width * height * 4);-
90 for (int i = 0; i < data.size()
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
; ++i)		0
91 data[i] = 0;
never executed: data[i] = 0;
0
92 funcs->glTexImage2D(0x0DE1, 0, 0x1908, width, height, 0, 0x1908, 0x1401, &data[0]);-
93 }
never executed: end of block
 else {		0
94 QVarLengthArray<uchar> data(width * height);-
95 for (int i = 0; i < data.size()
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
; ++i)		0
96 data[i] = 0;
never executed: data[i] = 0;
0
97-
98 const GLint internalFormat = isCoreProfile()
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
 ? 0x8229 : 0x1906;		0
99 const GLenum format = isCoreProfile()
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
 ? 0x1903 : 0x1906;		0
100-
101-
102-
103-
104 funcs->glTexImage2D(0x0DE1, 0, internalFormat, width, height, 0, format, 0x1401, &data[0]);-
105 }
never executed: end of block
0
106-
107 funcs->glTexParameteri(0x0DE1, 0x2800, 0x2600);-
108 funcs->glTexParameteri(0x0DE1, 0x2801, 0x2600);-
109 funcs->glTexParameteri(0x0DE1, 0x2802, 0x812F);-
110 funcs->glTexParameteri(0x0DE1, 0x2803, 0x812F);-
111 m_filterMode = Nearest;-
112-
113 if (!m_buffer.isCreated()
!m_buffer.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
114 m_buffer.create();-
115 m_buffer.bind();-
116 static GLfloat buf[sizeof(m_vertexCoordinateArray) + sizeof(m_textureCoordinateArray)];-
117 memcpy(buf, m_vertexCoordinateArray, sizeof(m_vertexCoordinateArray));-
118 memcpy(buf + (sizeof(m_vertexCoordinateArray) / sizeof(GLfloat)),-
119 m_textureCoordinateArray,-
120 sizeof(m_textureCoordinateArray));-
121 m_buffer.allocate(buf, sizeof(buf));-
122 m_buffer.release();-
123 }
never executed: end of block
0
124-
125 if (!m_vao.isCreated()
!m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
126 m_vao.create();
never executed: m_vao.create();
0
127}
never executed: end of block
0
128-
129void QOpenGLTextureGlyphCache::setupVertexAttribs()-
130{-
131 m_buffer.bind();-
132 m_blitProgram->setAttributeBuffer(int(QT_VERTEX_COORDS_ATTR), 0x1406, 0, 2);-
133 m_blitProgram->setAttributeBuffer(int(QT_TEXTURE_COORDS_ATTR), 0x1406, sizeof(m_vertexCoordinateArray), 2);-
134 m_blitProgram->enableAttributeArray(int(QT_VERTEX_COORDS_ATTR));-
135 m_blitProgram->enableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));-
136 m_buffer.release();-
137}
never executed: end of block
0
138-
139void QOpenGLTextureGlyphCache::resizeTextureData(int width, int height)-
140{-
141 QOpenGLContext *ctx = QOpenGLContext::currentContext();-
142 if (ctx == 0
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
143 QMessageLogger(__FILE__, 182, __PRETTY_FUNCTION__).warning("QOpenGLTextureGlyphCache::resizeTextureData: Called with no context");-
144 return;
never executed: return;
0
145 }-
146-
147 QOpenGLFunctions *funcs = ctx->functions();-
148 GLint oldFbo;-
149 funcs->glGetIntegerv(0x8CA6, &oldFbo);-
150-
151 int oldWidth = m_textureResource->m_width;-
152 int oldHeight = m_textureResource->m_height;-
153-
154-
155 if (width < 16
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
156 width = 16;
never executed: width = 16;
0
157 if (height < 16
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
158 height = 16;
never executed: height = 16;
0
159-
160 GLuint oldTexture = m_textureResource->m_texture;-
161 createTextureData(width, height);-
162-
163 if (ctx->d_func()->workaround_brokenFBOReadBack
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
164 QImageTextureGlyphCache::resizeTextureData(width, height);-
165 ((!(image().depth() == 8)) ? qt_assert("image().depth() == 8",__FILE__,204) : qt_noop());-
166 funcs->glTexSubImage2D(0x0DE1, 0, 0, 0, width, oldHeight, 0x1906, 0x1401, image().constBits());-
167 funcs->glDeleteTextures(1, &oldTexture);-
168 return;
never executed: return;
0
169 }-
170-
171-
172-
173-
174 funcs->glBindFramebuffer(0x8D40, m_textureResource->m_fbo);-
175-
176 GLuint tmp_texture;-
177 funcs->glGenTextures(1, &tmp_texture);-
178 funcs->glBindTexture(0x0DE1, tmp_texture);-
179 funcs->glTexImage2D(0x0DE1, 0, 0x1908, oldWidth, oldHeight, 0,-
180 0x1908, 0x1401, __null);-
181 funcs->glTexParameteri(0x0DE1, 0x2801, 0x2600);-
182 funcs->glTexParameteri(0x0DE1, 0x2800, 0x2600);-
183 funcs->glTexParameteri(0x0DE1, 0x2802, 0x812F);-
184 funcs->glTexParameteri(0x0DE1, 0x2803, 0x812F);-
185 m_filterMode = Nearest;-
186 funcs->glBindTexture(0x0DE1, 0);-
187 funcs->glFramebufferTexture2D(0x8D40, 0x8CE0,-
188 0x0DE1, tmp_texture, 0);-
189-
190 funcs->glActiveTexture(0x84C0 + GLuint(0));-
191 funcs->glBindTexture(0x0DE1, oldTexture);-
192-
193 if (pex != 0
pex != 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
194 pex->transferMode(BrushDrawingMode);
never executed: pex->transferMode(BrushDrawingMode);
0
195-
196 funcs->glDisable(0x0B90);-
197 funcs->glDisable(0x0B71);-
198 funcs->glDisable(0x0C11);-
199 funcs->glDisable(0x0BE2);-
200-
201 funcs->glViewport(0, 0, oldWidth, oldHeight);-
202-
203 QOpenGLShaderProgram *blitProgram = 0;-
204 if (pex == 0
pex == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
205 if (m_blitProgram == 0
m_blitProgram == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
206 m_blitProgram = new QOpenGLShaderProgram;-
207 const bool isCoreProfile = ctx->format().profile() == QSurfaceFormat::CoreProfile;-
208-
209 {-
210 QString source;-
211 source.append(QLatin1String(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));-
212 source.append(QLatin1String(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));-
213-
214 QOpenGLShader *vertexShader = new QOpenGLShader(QOpenGLShader::Vertex, m_blitProgram);-
215 vertexShader->compileSourceCode(source);-
216-
217 m_blitProgram->addShader(vertexShader);-
218 }-
219-
220 {-
221 QString source;-
222 source.append(QLatin1String(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));-
223 source.append(QLatin1String(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));-
224-
225 QOpenGLShader *fragmentShader = new QOpenGLShader(QOpenGLShader::Fragment, m_blitProgram);-
226 fragmentShader->compileSourceCode(source);-
227-
228 m_blitProgram->addShader(fragmentShader);-
229 }-
230-
231 m_blitProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);-
232 m_blitProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);-
233-
234 m_blitProgram->link();-
235-
236 if (m_vao.isCreated()
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
237 m_vao.bind();-
238 setupVertexAttribs();-
239 }
never executed: end of block
0
240 }
never executed: end of block
0
241-
242 if (m_vao.isCreated()
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
243 m_vao.bind();
never executed: m_vao.bind();
0
244 else-
245 setupVertexAttribs();
never executed: setupVertexAttribs();
0
246-
247 m_blitProgram->bind();-
248 blitProgram = m_blitProgram;-
249-
250 }
never executed: end of block
 else {		0
251 pex->setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, m_vertexCoordinateArray);-
252 pex->setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, m_textureCoordinateArray);-
253-
254 pex->shaderManager->useBlitProgram();-
255 blitProgram = pex->shaderManager->blitProgram();-
256 }
never executed: end of block
0
257-
258 blitProgram->setUniformValue("imageTexture", GLuint(0));-
259-
260 funcs->glDrawArrays(0x0006, 0, 4);-
261-
262 funcs->glBindTexture(0x0DE1, m_textureResource->m_texture);-
263-
264 funcs->glCopyTexSubImage2D(0x0DE1, 0, 0, 0, 0, 0, oldWidth, oldHeight);-
265-
266 funcs->glFramebufferRenderbuffer(0x8D40, 0x8CE0,-
267 0x8D41, 0);-
268 funcs->glDeleteTextures(1, &tmp_texture);-
269 funcs->glDeleteTextures(1, &oldTexture);-
270-
271 funcs->glBindFramebuffer(0x8D40, (GLuint)oldFbo);-
272-
273 if (pex != 0
pex != 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
274 funcs->glViewport(0, 0, pex->width, pex->height);-
275 pex->updateClipScissorTest();-
276 }
never executed: end of block
 else {		0
277 if (m_vao.isCreated()
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
278 m_vao.release();-
279 }
never executed: end of block
 else {		0
280 m_blitProgram->disableAttributeArray(int(QT_VERTEX_COORDS_ATTR));-
281 m_blitProgram->disableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));-
282 }
never executed: end of block
0
283 }-
284}-
285-
286void QOpenGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition)-
287{-
288 QOpenGLContext *ctx = QOpenGLContext::currentContext();-
289 if (ctx == 0
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
290 QMessageLogger(__FILE__, 329, __PRETTY_FUNCTION__).warning("QOpenGLTextureGlyphCache::fillTexture: Called with no context");-
291 return;
never executed: return;
0
292 }-
293-
294 QOpenGLFunctions *funcs = ctx->functions();-
295 if (ctx->d_func()->workaround_brokenFBOReadBack
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
296 QImageTextureGlyphCache::fillTexture(c, glyph, subPixelPosition);-
297-
298 funcs->glBindTexture(0x0DE1, m_textureResource->m_texture);-
299 const QImage &texture = image();-
300 const uchar *bits = texture.constBits();-
301 bits += c.y * texture.bytesPerLine() + c.x;-
302 for (int i=0; i<c.h
i<c.hDescription
TRUEnever evaluated
FALSEnever evaluated
; ++i) {		0
303 funcs->glTexSubImage2D(0x0DE1, 0, c.x, c.y + i, c.w, 1, 0x1906, 0x1401, bits);-
304 bits += texture.bytesPerLine();-
305 }
never executed: end of block
0
306 return;
never executed: return;
0
307 }-
308-
309 QImage mask = textureMapForGlyph(glyph, subPixelPosition);-
310 const int maskWidth = mask.width();-
311 const int maskHeight = mask.height();-
312-
313 if (mask.format() == QImage::Format_Mono
mask.format() ...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
314 mask = mask.convertToFormat(QImage::Format_Indexed8);-
315 for (int y = 0; y < maskHeight
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
316 uchar *src = (uchar *) mask.scanLine(y);-
317 for (int x = 0; x < maskWidth
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
; ++x)		0
318 src[x] = -src[x];
never executed: src[x] = -src[x];
0
319 }
never executed: end of block
0
320 }
never executed: end of block
 else if (mask.depth() == 32
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
321 if (mask.format() == QImage::Format_RGB32
mask.format() ...::Format_RGB32Description
TRUEnever evaluated
FALSEnever evaluated
0
322-
323-
324-
325-
326-
327 || (mask.format() == QImage::Format_ARGB32_Premultiplied
mask.format() ..._PremultipliedDescription
TRUEnever evaluated
FALSEnever evaluated
0
328 && ctx->isOpenGLES()
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
329-
330 ) {-
331 for (int y = 0; y < maskHeight
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
332 QRgb *src = (QRgb *) mask.scanLine(y);-
333 for (int x = 0; x < maskWidth
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
; ++x) {		0
334 int r = qRed(src[x]);-
335 int g = qGreen(src[x]);-
336 int b = qBlue(src[x]);-
337 int avg;-
338 if (mask.format() == QImage::Format_RGB32
mask.format() ...::Format_RGB32Description
TRUEnever evaluated
FALSEnever evaluated
)		0
339 avg = (r + g + b + 1) / 3;
never executed: avg = (r + g + b + 1) / 3;
0
340 else-
341 avg = qAlpha(src[x]);
never executed: avg = qAlpha(src[x]);
0
342-
343 src[x] = qRgba(r, g, b, avg);-
344-
345-
346 if (ctx->isOpenGLES()
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
347-
348 src[x] = ARGB2RGBA(src[x]);
never executed: src[x] = ARGB2RGBA(src[x]);
0
349 }
never executed: end of block
0
350 }
never executed: end of block
0
351 }
never executed: end of block
0
352 }
never executed: end of block
0
353-
354 funcs->glBindTexture(0x0DE1, m_textureResource->m_texture);-
355 if (mask.depth() == 32
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
356-
357-
358-
359 GLenum fmt = ctx->isOpenGLES()
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
 ? 0x1908 : 0x80E1;		0
360-
361-
362-
363-
364-
365 funcs->glTexSubImage2D(0x0DE1, 0, c.x, c.y, maskWidth, maskHeight, fmt, 0x1401, mask.bits());-
366 }
never executed: end of block
 else {		0
367-
368-
369-
370 const GLenum format = isCoreProfile()
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
 ? 0x1903 : 0x1906;		0
371-
372-
373-
374 funcs->glTexSubImage2D(0x0DE1, 0, c.x, c.y, maskWidth, maskHeight, format, 0x1401, mask.bits());-
375 }
never executed: end of block
0
376}-
377-
378int QOpenGLTextureGlyphCache::glyphPadding() const-
379{-
380 return
never executed: return 1;
 1;
never executed: return 1;
0
381}-
382-
383int QOpenGLTextureGlyphCache::maxTextureWidth() const-
384{-
385 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
386 if (ctx == 0
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
387 return
never executed: return QImageTextureGlyphCache::maxTextureWidth();
 QImageTextureGlyphCache::maxTextureWidth();
never executed: return QImageTextureGlyphCache::maxTextureWidth();
0
388 else-
389 return
never executed: return ctx->d_func()->maxTextureSize();
 ctx->d_func()->maxTextureSize();
never executed: return ctx->d_func()->maxTextureSize();
0
390}-
391-
392int QOpenGLTextureGlyphCache::maxTextureHeight() const-
393{-
394 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
395 if (ctx == 0
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
396 return
never executed: return QImageTextureGlyphCache::maxTextureHeight();
 QImageTextureGlyphCache::maxTextureHeight();
never executed: return QImageTextureGlyphCache::maxTextureHeight();
0
397-
398 if (ctx->d_func()->workaround_brokenTexSubImage
ctx->d_func()-...kenTexSubImageDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
399 return
never executed: return qMin(1024, ctx->d_func()->maxTextureSize());
 qMin(1024, ctx->d_func()->maxTextureSize());
never executed: return qMin(1024, ctx->d_func()->maxTextureSize());
0
400 else-
401 return
never executed: return ctx->d_func()->maxTextureSize();
 ctx->d_func()->maxTextureSize();
never executed: return ctx->d_func()->maxTextureSize();
0
402}-
403-
404void QOpenGLTextureGlyphCache::clear()-
405{-
406 if (m_textureResource
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
407 m_textureResource->free();
never executed: m_textureResource->free();
0
408 m_textureResource = 0;-
409-
410 delete m_blitProgram;-
411 m_blitProgram = 0;-
412-
413 m_w = 0;-
414 m_h = 0;-
415 m_cx = 0;-
416 m_cy = 0;-
417 m_currentRowHeight = 0;-
418 coords.clear();-
419}
never executed: end of block
0
420-
421-
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