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qtextureglyphcache_gl.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtOpenGL module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qtextureglyphcache_gl_p.h"-
41#include "qpaintengineex_opengl2_p.h"-
42#include "qglfunctions.h"-
43#include "private/qglengineshadersource_p.h"-
44-
45QT_BEGIN_NAMESPACE-
46-
47-
48QBasicAtomicInt qgltextureglyphcache_serial_number = Q_BASIC_ATOMIC_INITIALIZER(1);-
49-
50QGLTextureGlyphCache::QGLTextureGlyphCache(QFontEngine::GlyphFormat format, const QTransform &matrix)-
51 : QImageTextureGlyphCache(format, matrix)-
52 , m_textureResource(0)-
53 , pex(0)-
54 , m_blitProgram(0)-
55 , m_filterMode(Nearest)-
56 , m_serialNumber(qgltextureglyphcache_serial_number.fetchAndAddRelaxed(1))-
57{-
58#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG-
59 qDebug(" -> QGLTextureGlyphCache() %p for context %p.", this, QOpenGLContext::currentContext());-
60#endif-
61 m_vertexCoordinateArray[0] = -1.0f;-
62 m_vertexCoordinateArray[1] = -1.0f;-
63 m_vertexCoordinateArray[2] = 1.0f;-
64 m_vertexCoordinateArray[3] = -1.0f;-
65 m_vertexCoordinateArray[4] = 1.0f;-
66 m_vertexCoordinateArray[5] = 1.0f;-
67 m_vertexCoordinateArray[6] = -1.0f;-
68 m_vertexCoordinateArray[7] = 1.0f;-
69-
70 m_textureCoordinateArray[0] = 0.0f;-
71 m_textureCoordinateArray[1] = 0.0f;-
72 m_textureCoordinateArray[2] = 1.0f;-
73 m_textureCoordinateArray[3] = 0.0f;-
74 m_textureCoordinateArray[4] = 1.0f;-
75 m_textureCoordinateArray[5] = 1.0f;-
76 m_textureCoordinateArray[6] = 0.0f;-
77 m_textureCoordinateArray[7] = 1.0f;-
78}
never executed: end of block
0
79-
80QGLTextureGlyphCache::~QGLTextureGlyphCache()-
81{-
82#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG-
83 qDebug(" -> ~QGLTextureGlyphCache() %p.", this);-
84#endif-
85 delete m_blitProgram;-
86 if (m_textureResource)
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
0
87 m_textureResource->free();
never executed: m_textureResource->free();
0
88}
never executed: end of block
0
89-
90void QGLTextureGlyphCache::createTextureData(int width, int height)-
91{-
92 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());-
93 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
94 qWarning("QGLTextureGlyphCache::createTextureData: Called with no context");-
95 return;
never executed: return;
0
96 }-
97 QOpenGLFunctions *funcs = ctx->contextHandle()->functions();-
98-
99 // create in QImageTextureGlyphCache baseclass is meant to be called-
100 // only to create the initial image and does not preserve the content,-
101 // so we don't call when this function is called from resize.-
102 if ((!QGLFramebufferObject::hasOpenGLFramebufferObjects() || ctx->d_ptr->workaround_brokenFBOReadBack) && image().isNull())
!QGLFramebuffe...ufferObjects()Description
TRUEnever evaluated
FALSEnever evaluated
ctx->d_ptr->wo...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
image().isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
103 QImageTextureGlyphCache::createTextureData(width, height);
never executed: QImageTextureGlyphCache::createTextureData(width, height);
0
104-
105 // Make the lower glyph texture size 16 x 16.-
106 if (width < 16)
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
107 width = 16;
never executed: width = 16;
0
108 if (height < 16)
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
109 height = 16;
never executed: height = 16;
0
110-
111 if (m_textureResource && !m_textureResource->m_texture) {
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
!m_textureResource->m_textureDescription
TRUEnever evaluated
FALSEnever evaluated
0
112 delete m_textureResource;-
113 m_textureResource = 0;-
114 }
never executed: end of block
0
115-
116 if (!m_textureResource)
!m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
0
117 m_textureResource = new QGLGlyphTexture(ctx);
never executed: m_textureResource = new QGLGlyphTexture(ctx);
0
118-
119 funcs->glGenTextures(1, &m_textureResource->m_texture);-
120 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
121-
122 m_textureResource->m_width = width;-
123 m_textureResource->m_height = height;-
124-
125 if (m_format == QFontEngine::Format_A32) {
m_format == QF...ne::Format_A32Description
TRUEnever evaluated
FALSEnever evaluated
0
126 QVarLengthArray<uchar> data(width * height * 4);-
127 for (int i = 0; i < data.size(); ++i)
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
128 data[i] = 0;
never executed: data[i] = 0;
0
129 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &data[0]);-
130 } else {
never executed: end of block
0
131 QVarLengthArray<uchar> data(width * height);-
132 for (int i = 0; i < data.size(); ++i)
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
133 data[i] = 0;
never executed: data[i] = 0;
0
134 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &data[0]);-
135 }
never executed: end of block
0
136-
137 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
138 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
139 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
140 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
141 m_filterMode = Nearest;-
142}
never executed: end of block
0
143-
144void QGLTextureGlyphCache::resizeTextureData(int width, int height)-
145{-
146 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());-
147 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
148 qWarning("QGLTextureGlyphCache::resizeTextureData: Called with no context");-
149 return;
never executed: return;
0
150 }-
151 QOpenGLFunctions *funcs = ctx->contextHandle()->functions();-
152-
153 int oldWidth = m_textureResource->m_width;-
154 int oldHeight = m_textureResource->m_height;-
155-
156 // Make the lower glyph texture size 16 x 16.-
157 if (width < 16)
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
158 width = 16;
never executed: width = 16;
0
159 if (height < 16)
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
160 height = 16;
never executed: height = 16;
0
161-
162 GLuint oldTexture = m_textureResource->m_texture;-
163 createTextureData(width, height);-
164-
165 if (!QGLFramebufferObject::hasOpenGLFramebufferObjects() || ctx->d_ptr->workaround_brokenFBOReadBack) {
!QGLFramebuffe...ufferObjects()Description
TRUEnever evaluated
FALSEnever evaluated
ctx->d_ptr->wo...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
0
166 QImageTextureGlyphCache::resizeTextureData(width, height);-
167 Q_ASSERT(image().depth() == 8);-
168 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, oldHeight, GL_ALPHA, GL_UNSIGNED_BYTE, image().constBits());-
169 funcs->glDeleteTextures(1, &oldTexture);-
170 return;
never executed: return;
0
171 }-
172-
173 // ### the QTextureGlyphCache API needs to be reworked to allow-
174 // ### resizeTextureData to fail-
175-
176 ctx->d_ptr->refreshCurrentFbo();-
177-
178 funcs->glBindFramebuffer(GL_FRAMEBUFFER, m_textureResource->m_fbo);-
179-
180 GLuint tmp_texture;-
181 funcs->glGenTextures(1, &tmp_texture);-
182 funcs->glBindTexture(GL_TEXTURE_2D, tmp_texture);-
183 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0,-
184 GL_RGBA, GL_UNSIGNED_BYTE, NULL);-
185 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
186 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
187 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
188 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
189 m_filterMode = Nearest;-
190 funcs->glBindTexture(GL_TEXTURE_2D, 0);-
191 funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,-
192 GL_TEXTURE_2D, tmp_texture, 0);-
193-
194 funcs->glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);-
195 funcs->glBindTexture(GL_TEXTURE_2D, oldTexture);-
196-
197 if (pex != 0)
pex != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
198 pex->transferMode(BrushDrawingMode);
never executed: pex->transferMode(BrushDrawingMode);
0
199-
200 funcs->glDisable(GL_STENCIL_TEST);-
201 funcs->glDisable(GL_DEPTH_TEST);-
202 funcs->glDisable(GL_SCISSOR_TEST);-
203 funcs->glDisable(GL_BLEND);-
204-
205 funcs->glViewport(0, 0, oldWidth, oldHeight);-
206-
207 QGLShaderProgram *blitProgram = 0;-
208 if (pex == 0) {
pex == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
209 if (m_blitProgram == 0) {
m_blitProgram == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
210 m_blitProgram = new QGLShaderProgram(ctx);-
211-
212 {-
213 QString source;-
214 source.append(QLatin1String(qglslMainWithTexCoordsVertexShader));-
215 source.append(QLatin1String(qglslUntransformedPositionVertexShader));-
216-
217 QGLShader *vertexShader = new QGLShader(QGLShader::Vertex, m_blitProgram);-
218 vertexShader->compileSourceCode(source);-
219-
220 m_blitProgram->addShader(vertexShader);-
221 }-
222-
223 {-
224 QString source;-
225 source.append(QLatin1String(qglslMainFragmentShader));-
226 source.append(QLatin1String(qglslImageSrcFragmentShader));-
227-
228 QGLShader *fragmentShader = new QGLShader(QGLShader::Fragment, m_blitProgram);-
229 fragmentShader->compileSourceCode(source);-
230-
231 m_blitProgram->addShader(fragmentShader);-
232 }-
233-
234 m_blitProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);-
235 m_blitProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);-
236-
237 m_blitProgram->link();-
238 }
never executed: end of block
0
239-
240 funcs->glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_vertexCoordinateArray);-
241 funcs->glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_textureCoordinateArray);-
242-
243 m_blitProgram->bind();-
244 m_blitProgram->enableAttributeArray(int(QT_VERTEX_COORDS_ATTR));-
245 m_blitProgram->enableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));-
246 m_blitProgram->disableAttributeArray(int(QT_OPACITY_ATTR));-
247-
248 blitProgram = m_blitProgram;-
249-
250 } else {
never executed: end of block
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", QT_IMAGE_TEXTURE_UNIT);-
259-
260 funcs->glDrawArrays(GL_TRIANGLE_FAN, 0, 4);-
261-
262 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
263-
264 funcs->glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight);-
265-
266 funcs->glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,-
267 GL_RENDERBUFFER, 0);-
268 funcs->glDeleteTextures(1, &tmp_texture);-
269 funcs->glDeleteTextures(1, &oldTexture);-
270-
271 funcs->glBindFramebuffer(GL_FRAMEBUFFER, ctx->d_ptr->current_fbo);-
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
0
277}
never executed: end of block
0
278-
279void QGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition)-
280{-
281 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());-
282 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
283 qWarning("QGLTextureGlyphCache::fillTexture: Called with no context");-
284 return;
never executed: return;
0
285 }-
286 QOpenGLFunctions *funcs = ctx->contextHandle()->functions();-
287-
288 if (!QGLFramebufferObject::hasOpenGLFramebufferObjects() || ctx->d_ptr->workaround_brokenFBOReadBack) {
!QGLFramebuffe...ufferObjects()Description
TRUEnever evaluated
FALSEnever evaluated
ctx->d_ptr->wo...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
0
289 QImageTextureGlyphCache::fillTexture(c, glyph, subPixelPosition);-
290-
291 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
292 const QImage &texture = image();-
293 const uchar *bits = texture.constBits();-
294 bits += c.y * texture.bytesPerLine() + c.x;-
295 for (int i=0; i<c.h; ++i) {
i<c.hDescription
TRUEnever evaluated
FALSEnever evaluated
0
296 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, c.w, 1, GL_ALPHA, GL_UNSIGNED_BYTE, bits);-
297 bits += texture.bytesPerLine();-
298 }
never executed: end of block
0
299 return;
never executed: return;
0
300 }-
301-
302 QImage mask = textureMapForGlyph(glyph, subPixelPosition);-
303 const int maskWidth = mask.width();-
304 const int maskHeight = mask.height();-
305-
306 if (mask.format() == QImage::Format_Mono) {
mask.format() ...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
0
307 mask = mask.convertToFormat(QImage::Format_Indexed8);-
308 for (int y = 0; y < maskHeight; ++y) {
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
309 uchar *src = (uchar *) mask.scanLine(y);-
310 for (int x = 0; x < maskWidth; ++x)
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
311 src[x] = -src[x]; // convert 0 and 1 into 0 and 255
never executed: src[x] = -src[x];
0
312 }
never executed: end of block
0
313 } else if (mask.depth() == 32) {
never executed: end of block
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
0
314 // Make the alpha component equal to the average of the RGB values.-
315 // This is needed when drawing sub-pixel antialiased text on translucent targets.-
316 for (int y = 0; y < maskHeight; ++y) {
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
317 quint32 *src = (quint32 *) mask.scanLine(y);-
318 for (int x = 0; x < maskWidth; ++x) {
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
319 int r = qRed(src[x]);-
320 int g = qGreen(src[x]);-
321 int b = qBlue(src[x]);-
322 int avg;-
323 if (mask.format() == QImage::Format_RGB32)
mask.format() ...::Format_RGB32Description
TRUEnever evaluated
FALSEnever evaluated
0
324 avg = (r + g + b + 1) / 3; // "+1" for rounding.
never executed: avg = (r + g + b + 1) / 3;
0
325 else // Format_ARGB_Premultiplied-
326 avg = qAlpha(src[x]);
never executed: avg = qAlpha(src[x]);
0
327 if (ctx->contextHandle()->isOpenGLES()) {
ctx->contextHa...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
328 // swizzle the bits to accommodate for the GL_RGBA upload.-
329 src[x] = (avg << 24) | (r << 0) | (g << 8) | (b << 16);-
330 } else {
never executed: end of block
0
331 src[x] = (src[x] & 0x00ffffff) | (avg << 24);-
332 }
never executed: end of block
0
333 }-
334 }
never executed: end of block
0
335 }
never executed: end of block
0
336-
337 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
338 if (mask.depth() == 32) {
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
0
339 GLenum format = GL_RGBA;-
340#if !defined(QT_OPENGL_ES_2)-
341 if (!ctx->contextHandle()->isOpenGLES())
!ctx->contextH...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
342 format = GL_BGRA;
never executed: format = 0x80E1;
0
343#endif-
344 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, format, GL_UNSIGNED_BYTE, mask.bits());-
345 } else {
never executed: end of block
0
346 // glTexSubImage2D() might cause some garbage to appear in the texture if the mask width is-
347 // not a multiple of four bytes. The bug appeared on a computer with 32-bit Windows Vista-
348 // and nVidia GeForce 8500GT. GL_UNPACK_ALIGNMENT is set to four bytes, 'mask' has a-
349 // multiple of four bytes per line, and most of the glyph shows up correctly in the-
350 // texture, which makes me think that this is a driver bug.-
351 // One workaround is to make sure the mask width is a multiple of four bytes, for instance-
352 // by converting it to a format with four bytes per pixel. Another is to copy one line at a-
353 // time.-
354-
355 if (!ctx->d_ptr->workaround_brokenAlphaTexSubImage_init) {
!ctx->d_ptr->w...xSubImage_initDescription
TRUEnever evaluated
FALSEnever evaluated
0
356 // don't know which driver versions exhibit this bug, so be conservative for now-
357 const QByteArray vendorString(reinterpret_cast<const char*>(funcs->glGetString(GL_VENDOR)));-
358 ctx->d_ptr->workaround_brokenAlphaTexSubImage = vendorString.indexOf("NVIDIA") >= 0;-
359 ctx->d_ptr->workaround_brokenAlphaTexSubImage_init = true;-
360 }
never executed: end of block
0
361-
362 if (ctx->d_ptr->workaround_brokenAlphaTexSubImage) {
ctx->d_ptr->wo...phaTexSubImageDescription
TRUEnever evaluated
FALSEnever evaluated
0
363 for (int i = 0; i < maskHeight; ++i)
i < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
364 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, maskWidth, 1, GL_ALPHA, GL_UNSIGNED_BYTE, mask.scanLine(i));
never executed: funcs->glTexSubImage2D(0x0DE1, 0, c.x, c.y + i, maskWidth, 1, 0x1906, 0x1401, mask.scanLine(i));
0
365 } else {
never executed: end of block
0
366 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits());-
367 }
never executed: end of block
0
368 }-
369}-
370-
371int QGLTextureGlyphCache::glyphPadding() const-
372{-
373 return 1;
never executed: return 1;
0
374}-
375-
376int QGLTextureGlyphCache::maxTextureWidth() const-
377{-
378 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());-
379 if (ctx == 0)
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
380 return QImageTextureGlyphCache::maxTextureWidth();
never executed: return QImageTextureGlyphCache::maxTextureWidth();
0
381 else-
382 return ctx->d_ptr->maxTextureSize();
never executed: return ctx->d_ptr->maxTextureSize();
0
383}-
384-
385int QGLTextureGlyphCache::maxTextureHeight() const-
386{-
387 QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());-
388 if (ctx == 0)
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
389 return QImageTextureGlyphCache::maxTextureHeight();
never executed: return QImageTextureGlyphCache::maxTextureHeight();
0
390-
391 if (ctx->d_ptr->workaround_brokenTexSubImage)
ctx->d_ptr->wo...kenTexSubImageDescription
TRUEnever evaluated
FALSEnever evaluated
0
392 return qMin(1024, ctx->d_ptr->maxTextureSize());
never executed: return qMin(1024, ctx->d_ptr->maxTextureSize());
0
393 else-
394 return ctx->d_ptr->maxTextureSize();
never executed: return ctx->d_ptr->maxTextureSize();
0
395}-
396-
397void QGLTextureGlyphCache::clear()-
398{-
399 m_textureResource->free();-
400 m_textureResource = 0;-
401-
402 m_w = 0;-
403 m_h = 0;-
404 m_cx = 0;-
405 m_cy = 0;-
406 m_currentRowHeight = 0;-
407 coords.clear();-
408}
never executed: end of block
0
409-
410QT_END_NAMESPACE-
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