qopengltextureglyphcache.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
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15** information use the contact form at http://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 2.1 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
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25**-
26** As a special exception, The Qt Company gives you certain additional-
27** rights. These rights are described in The Qt Company LGPL Exception-
28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include "qopengltextureglyphcache_p.h"-
35#include "qopenglpaintengine_p.h"-
36#include "private/qopenglengineshadersource_p.h"-
37#include "qopenglextensions_p.h"-
38#include <qrgb.h>-
39#include <private/qdrawhelper_p.h>-
40-
41QT_BEGIN_NAMESPACE-
42-
43-
44QBasicAtomicInt qopengltextureglyphcache_serial_number = Q_BASIC_ATOMIC_INITIALIZER(1);-
45-
46QOpenGLTextureGlyphCache::QOpenGLTextureGlyphCache(QFontEngine::GlyphFormat format, const QTransform &matrix)-
47 : QImageTextureGlyphCache(format, matrix)-
48 , m_textureResource(0)-
49 , pex(0)-
50 , m_blitProgram(0)-
51 , m_filterMode(Nearest)-
52 , m_serialNumber(qopengltextureglyphcache_serial_number.fetchAndAddRelaxed(1))-
53 , m_buffer(QOpenGLBuffer::VertexBuffer)-
54{-
55#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG-
56 qDebug(" -> QOpenGLTextureGlyphCache() %p for context %p.", this, QOpenGLContext::currentContext());-
57#endif-
58 m_vertexCoordinateArray[0] = -1.0f;-
59 m_vertexCoordinateArray[1] = -1.0f;-
60 m_vertexCoordinateArray[2] = 1.0f;-
61 m_vertexCoordinateArray[3] = -1.0f;-
62 m_vertexCoordinateArray[4] = 1.0f;-
63 m_vertexCoordinateArray[5] = 1.0f;-
64 m_vertexCoordinateArray[6] = -1.0f;-
65 m_vertexCoordinateArray[7] = 1.0f;-
66-
67 m_textureCoordinateArray[0] = 0.0f;-
68 m_textureCoordinateArray[1] = 0.0f;-
69 m_textureCoordinateArray[2] = 1.0f;-
70 m_textureCoordinateArray[3] = 0.0f;-
71 m_textureCoordinateArray[4] = 1.0f;-
72 m_textureCoordinateArray[5] = 1.0f;-
73 m_textureCoordinateArray[6] = 0.0f;-
74 m_textureCoordinateArray[7] = 1.0f;-
75}
never executed: end of block
0
76-
77QOpenGLTextureGlyphCache::~QOpenGLTextureGlyphCache()-
78{-
79#ifdef QT_GL_TEXTURE_GLYPH_CACHE_DEBUG-
80 qDebug(" -> ~QOpenGLTextureGlyphCache() %p.", this);-
81#endif-
82 clear();-
83}
never executed: end of block
0
84-
85#if !defined(QT_OPENGL_ES_2)-
86static inline bool isCoreProfile()-
87{-
88 return QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile;
never executed: return QOpenGLContext::currentContext()->format().profile() == QSurfaceFormat::CoreProfile;
0
89}-
90#endif-
91-
92void QOpenGLTextureGlyphCache::createTextureData(int width, int height)-
93{-
94 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
95 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
96 qWarning("QOpenGLTextureGlyphCache::createTextureData: Called with no context");-
97 return;
never executed: return;
0
98 }-
99-
100 // create in QImageTextureGlyphCache baseclass is meant to be called-
101 // only to create the initial image and does not preserve the content,-
102 // so we don't call when this function is called from resize.-
103 if (ctx->d_func()->workaround_brokenFBOReadBack && image().isNull())
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
image().isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
104 QImageTextureGlyphCache::createTextureData(width, height);
never executed: QImageTextureGlyphCache::createTextureData(width, height);
0
105-
106 // Make the lower glyph texture size 16 x 16.-
107 if (width < 16)
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
108 width = 16;
never executed: width = 16;
0
109 if (height < 16)
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
110 height = 16;
never executed: height = 16;
0
111-
112 if (m_textureResource && !m_textureResource->m_texture) {
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
!m_textureResource->m_textureDescription
TRUEnever evaluated
FALSEnever evaluated
0
113 delete m_textureResource;-
114 m_textureResource = 0;-
115 }
never executed: end of block
0
116-
117 if (!m_textureResource)
!m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
0
118 m_textureResource = new QOpenGLGlyphTexture(ctx);
never executed: m_textureResource = new QOpenGLGlyphTexture(ctx);
0
119-
120 QOpenGLFunctions *funcs = ctx->functions();-
121 funcs->glGenTextures(1, &m_textureResource->m_texture);-
122 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
123-
124 m_textureResource->m_width = width;-
125 m_textureResource->m_height = height;-
126-
127 if (m_format == QFontEngine::Format_A32 || m_format == QFontEngine::Format_ARGB) {
m_format == QF...ne::Format_A32Description
TRUEnever evaluated
FALSEnever evaluated
m_format == QF...e::Format_ARGBDescription
TRUEnever evaluated
FALSEnever evaluated
0
128 QVarLengthArray<uchar> data(width * height * 4);-
129 for (int i = 0; i < data.size(); ++i)
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
130 data[i] = 0;
never executed: data[i] = 0;
0
131 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, &data[0]);-
132 } else {
never executed: end of block
0
133 QVarLengthArray<uchar> data(width * height);-
134 for (int i = 0; i < data.size(); ++i)
i < data.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
135 data[i] = 0;
never executed: data[i] = 0;
0
136#if !defined(QT_OPENGL_ES_2)-
137 const GLint internalFormat = isCoreProfile() ? GL_R8 : GL_ALPHA;
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
0
138 const GLenum format = isCoreProfile() ? GL_RED : GL_ALPHA;
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
0
139#else-
140 const GLint internalFormat = GL_ALPHA;-
141 const GLenum format = GL_ALPHA;-
142#endif-
143 funcs->glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, GL_UNSIGNED_BYTE, &data[0]);-
144 }
never executed: end of block
0
145-
146 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
147 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
148 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
149 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
150 m_filterMode = Nearest;-
151-
152 if (!m_buffer.isCreated()) {
!m_buffer.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
0
153 m_buffer.create();-
154 m_buffer.bind();-
155 static GLfloat buf[sizeof(m_vertexCoordinateArray) + sizeof(m_textureCoordinateArray)];-
156 memcpy(buf, m_vertexCoordinateArray, sizeof(m_vertexCoordinateArray));-
157 memcpy(buf + (sizeof(m_vertexCoordinateArray) / sizeof(GLfloat)),-
158 m_textureCoordinateArray,-
159 sizeof(m_textureCoordinateArray));-
160 m_buffer.allocate(buf, sizeof(buf));-
161 m_buffer.release();-
162 }
never executed: end of block
0
163-
164 if (!m_vao.isCreated())
!m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
0
165 m_vao.create();
never executed: m_vao.create();
0
166}
never executed: end of block
0
167-
168void QOpenGLTextureGlyphCache::setupVertexAttribs()-
169{-
170 m_buffer.bind();-
171 m_blitProgram->setAttributeBuffer(int(QT_VERTEX_COORDS_ATTR), GL_FLOAT, 0, 2);-
172 m_blitProgram->setAttributeBuffer(int(QT_TEXTURE_COORDS_ATTR), GL_FLOAT, sizeof(m_vertexCoordinateArray), 2);-
173 m_blitProgram->enableAttributeArray(int(QT_VERTEX_COORDS_ATTR));-
174 m_blitProgram->enableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));-
175 m_buffer.release();-
176}
never executed: end of block
0
177-
178void QOpenGLTextureGlyphCache::resizeTextureData(int width, int height)-
179{-
180 QOpenGLContext *ctx = QOpenGLContext::currentContext();-
181 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
182 qWarning("QOpenGLTextureGlyphCache::resizeTextureData: Called with no context");-
183 return;
never executed: return;
0
184 }-
185-
186 QOpenGLFunctions *funcs = ctx->functions();-
187 GLint oldFbo;-
188 funcs->glGetIntegerv(GL_FRAMEBUFFER_BINDING, &oldFbo);-
189-
190 int oldWidth = m_textureResource->m_width;-
191 int oldHeight = m_textureResource->m_height;-
192-
193 // Make the lower glyph texture size 16 x 16.-
194 if (width < 16)
width < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
195 width = 16;
never executed: width = 16;
0
196 if (height < 16)
height < 16Description
TRUEnever evaluated
FALSEnever evaluated
0
197 height = 16;
never executed: height = 16;
0
198-
199 GLuint oldTexture = m_textureResource->m_texture;-
200 createTextureData(width, height);-
201-
202 if (ctx->d_func()->workaround_brokenFBOReadBack) {
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
0
203 QImageTextureGlyphCache::resizeTextureData(width, height);-
204 Q_ASSERT(image().depth() == 8);-
205 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, oldHeight, GL_ALPHA, GL_UNSIGNED_BYTE, image().constBits());-
206 funcs->glDeleteTextures(1, &oldTexture);-
207 return;
never executed: return;
0
208 }-
209-
210 // ### the QTextureGlyphCache API needs to be reworked to allow-
211 // ### resizeTextureData to fail-
212-
213 funcs->glBindFramebuffer(GL_FRAMEBUFFER, m_textureResource->m_fbo);-
214-
215 GLuint tmp_texture;-
216 funcs->glGenTextures(1, &tmp_texture);-
217 funcs->glBindTexture(GL_TEXTURE_2D, tmp_texture);-
218 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0,-
219 GL_RGBA, GL_UNSIGNED_BYTE, NULL);-
220 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
221 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
222 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
223 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
224 m_filterMode = Nearest;-
225 funcs->glBindTexture(GL_TEXTURE_2D, 0);-
226 funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,-
227 GL_TEXTURE_2D, tmp_texture, 0);-
228-
229 funcs->glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT);-
230 funcs->glBindTexture(GL_TEXTURE_2D, oldTexture);-
231-
232 if (pex != 0)
pex != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
233 pex->transferMode(BrushDrawingMode);
never executed: pex->transferMode(BrushDrawingMode);
0
234-
235 funcs->glDisable(GL_STENCIL_TEST);-
236 funcs->glDisable(GL_DEPTH_TEST);-
237 funcs->glDisable(GL_SCISSOR_TEST);-
238 funcs->glDisable(GL_BLEND);-
239-
240 funcs->glViewport(0, 0, oldWidth, oldHeight);-
241-
242 QOpenGLShaderProgram *blitProgram = 0;-
243 if (pex == 0) {
pex == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
244 if (m_blitProgram == 0) {
m_blitProgram == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
245 m_blitProgram = new QOpenGLShaderProgram;-
246 const bool isCoreProfile = ctx->format().profile() == QSurfaceFormat::CoreProfile;-
247-
248 {-
249 QString source;-
250 source.append(QLatin1String(isCoreProfile ? qopenglslMainWithTexCoordsVertexShader_core : qopenglslMainWithTexCoordsVertexShader));-
251 source.append(QLatin1String(isCoreProfile ? qopenglslUntransformedPositionVertexShader_core : qopenglslUntransformedPositionVertexShader));-
252-
253 QOpenGLShader *vertexShader = new QOpenGLShader(QOpenGLShader::Vertex, m_blitProgram);-
254 vertexShader->compileSourceCode(source);-
255-
256 m_blitProgram->addShader(vertexShader);-
257 }-
258-
259 {-
260 QString source;-
261 source.append(QLatin1String(isCoreProfile ? qopenglslMainFragmentShader_core : qopenglslMainFragmentShader));-
262 source.append(QLatin1String(isCoreProfile ? qopenglslImageSrcFragmentShader_core : qopenglslImageSrcFragmentShader));-
263-
264 QOpenGLShader *fragmentShader = new QOpenGLShader(QOpenGLShader::Fragment, m_blitProgram);-
265 fragmentShader->compileSourceCode(source);-
266-
267 m_blitProgram->addShader(fragmentShader);-
268 }-
269-
270 m_blitProgram->bindAttributeLocation("vertexCoordsArray", QT_VERTEX_COORDS_ATTR);-
271 m_blitProgram->bindAttributeLocation("textureCoordArray", QT_TEXTURE_COORDS_ATTR);-
272-
273 m_blitProgram->link();-
274-
275 if (m_vao.isCreated()) {
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
0
276 m_vao.bind();-
277 setupVertexAttribs();-
278 }
never executed: end of block
0
279 }
never executed: end of block
0
280-
281 if (m_vao.isCreated())
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
0
282 m_vao.bind();
never executed: m_vao.bind();
0
283 else-
284 setupVertexAttribs();
never executed: setupVertexAttribs();
0
285-
286 m_blitProgram->bind();-
287 blitProgram = m_blitProgram;-
288-
289 } else {
never executed: end of block
0
290 pex->setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, m_vertexCoordinateArray);-
291 pex->setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, m_textureCoordinateArray);-
292-
293 pex->shaderManager->useBlitProgram();-
294 blitProgram = pex->shaderManager->blitProgram();-
295 }
never executed: end of block
0
296-
297 blitProgram->setUniformValue("imageTexture", QT_IMAGE_TEXTURE_UNIT);-
298-
299 funcs->glDrawArrays(GL_TRIANGLE_FAN, 0, 4);-
300-
301 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
302-
303 funcs->glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight);-
304-
305 funcs->glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,-
306 GL_RENDERBUFFER, 0);-
307 funcs->glDeleteTextures(1, &tmp_texture);-
308 funcs->glDeleteTextures(1, &oldTexture);-
309-
310 funcs->glBindFramebuffer(GL_FRAMEBUFFER, (GLuint)oldFbo);-
311-
312 if (pex != 0) {
pex != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
313 funcs->glViewport(0, 0, pex->width, pex->height);-
314 pex->updateClipScissorTest();-
315 } else {
never executed: end of block
0
316 if (m_vao.isCreated()) {
m_vao.isCreated()Description
TRUEnever evaluated
FALSEnever evaluated
0
317 m_vao.release();-
318 } else {
never executed: end of block
0
319 m_blitProgram->disableAttributeArray(int(QT_VERTEX_COORDS_ATTR));-
320 m_blitProgram->disableAttributeArray(int(QT_TEXTURE_COORDS_ATTR));-
321 }
never executed: end of block
0
322 }-
323}-
324-
325void QOpenGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition)-
326{-
327 QOpenGLContext *ctx = QOpenGLContext::currentContext();-
328 if (ctx == 0) {
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
329 qWarning("QOpenGLTextureGlyphCache::fillTexture: Called with no context");-
330 return;
never executed: return;
0
331 }-
332-
333 QOpenGLFunctions *funcs = ctx->functions();-
334 if (ctx->d_func()->workaround_brokenFBOReadBack) {
ctx->d_func()-...kenFBOReadBackDescription
TRUEnever evaluated
FALSEnever evaluated
0
335 QImageTextureGlyphCache::fillTexture(c, glyph, subPixelPosition);-
336-
337 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
338 const QImage &texture = image();-
339 const uchar *bits = texture.constBits();-
340 bits += c.y * texture.bytesPerLine() + c.x;-
341 for (int i=0; i<c.h; ++i) {
i<c.hDescription
TRUEnever evaluated
FALSEnever evaluated
0
342 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y + i, c.w, 1, GL_ALPHA, GL_UNSIGNED_BYTE, bits);-
343 bits += texture.bytesPerLine();-
344 }
never executed: end of block
0
345 return;
never executed: return;
0
346 }-
347-
348 QImage mask = textureMapForGlyph(glyph, subPixelPosition);-
349 const int maskWidth = mask.width();-
350 const int maskHeight = mask.height();-
351-
352 if (mask.format() == QImage::Format_Mono) {
mask.format() ...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
0
353 mask = mask.convertToFormat(QImage::Format_Indexed8);-
354 for (int y = 0; y < maskHeight; ++y) {
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
355 uchar *src = (uchar *) mask.scanLine(y);-
356 for (int x = 0; x < maskWidth; ++x)
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
357 src[x] = -src[x]; // convert 0 and 1 into 0 and 255
never executed: src[x] = -src[x];
0
358 }
never executed: end of block
0
359 } else if (mask.depth() == 32) {
never executed: end of block
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
0
360 if (mask.format() == QImage::Format_RGB32
mask.format() ...::Format_RGB32Description
TRUEnever evaluated
FALSEnever evaluated
0
361 // We need to make the alpha component equal to the average of the RGB values.-
362 // This is needed when drawing sub-pixel antialiased text on translucent targets.-
363#if Q_BYTE_ORDER == Q_BIG_ENDIAN-
364 || mask.format() == QImage::Format_ARGB32_Premultiplied-
365#else-
366 || (mask.format() == QImage::Format_ARGB32_Premultiplied
mask.format() ..._PremultipliedDescription
TRUEnever evaluated
FALSEnever evaluated
0
367 && ctx->isOpenGLES())
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
368#endif-
369 ) {-
370 for (int y = 0; y < maskHeight; ++y) {
y < maskHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
371 QRgb *src = (QRgb *) mask.scanLine(y);-
372 for (int x = 0; x < maskWidth; ++x) {
x < maskWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
373 int r = qRed(src[x]);-
374 int g = qGreen(src[x]);-
375 int b = qBlue(src[x]);-
376 int avg;-
377 if (mask.format() == QImage::Format_RGB32)
mask.format() ...::Format_RGB32Description
TRUEnever evaluated
FALSEnever evaluated
0
378 avg = (r + g + b + 1) / 3; // "+1" for rounding.
never executed: avg = (r + g + b + 1) / 3;
0
379 else // Format_ARGB_Premultiplied-
380 avg = qAlpha(src[x]);
never executed: avg = qAlpha(src[x]);
0
381-
382 src[x] = qRgba(r, g, b, avg);-
383 // swizzle the bits to accommodate for the GL_RGBA upload.-
384#if Q_BYTE_ORDER != Q_BIG_ENDIAN-
385 if (ctx->isOpenGLES())
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
386#endif-
387 src[x] = ARGB2RGBA(src[x]);
never executed: src[x] = ARGB2RGBA(src[x]);
0
388 }
never executed: end of block
0
389 }
never executed: end of block
0
390 }
never executed: end of block
0
391 }
never executed: end of block
0
392-
393 funcs->glBindTexture(GL_TEXTURE_2D, m_textureResource->m_texture);-
394 if (mask.depth() == 32) {
mask.depth() == 32Description
TRUEnever evaluated
FALSEnever evaluated
0
395#ifdef QT_OPENGL_ES_2-
396 GLenum fmt = GL_RGBA;-
397#else-
398 GLenum fmt = ctx->isOpenGLES() ? GL_RGBA : GL_BGRA;
ctx->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
399#endif // QT_OPENGL_ES_2-
400-
401#if Q_BYTE_ORDER == Q_BIG_ENDIAN-
402 fmt = GL_RGBA;-
403#endif-
404 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, fmt, GL_UNSIGNED_BYTE, mask.bits());-
405 } else {
never executed: end of block
0
406 // The scanlines in mask are 32-bit aligned, even for mono or 8-bit formats. This-
407 // is good because it matches the default of 4 bytes for GL_UNPACK_ALIGNMENT.-
408#if !defined(QT_OPENGL_ES_2)-
409 const GLenum format = isCoreProfile() ? GL_RED : GL_ALPHA;
isCoreProfile()Description
TRUEnever evaluated
FALSEnever evaluated
0
410#else-
411 const GLenum format = GL_ALPHA;-
412#endif-
413 funcs->glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, format, GL_UNSIGNED_BYTE, mask.bits());-
414 }
never executed: end of block
0
415}-
416-
417int QOpenGLTextureGlyphCache::glyphPadding() const-
418{-
419 return 1;
never executed: return 1;
0
420}-
421-
422int QOpenGLTextureGlyphCache::maxTextureWidth() const-
423{-
424 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
425 if (ctx == 0)
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
426 return QImageTextureGlyphCache::maxTextureWidth();
never executed: return QImageTextureGlyphCache::maxTextureWidth();
0
427 else-
428 return ctx->d_func()->maxTextureSize();
never executed: return ctx->d_func()->maxTextureSize();
0
429}-
430-
431int QOpenGLTextureGlyphCache::maxTextureHeight() const-
432{-
433 QOpenGLContext *ctx = const_cast<QOpenGLContext *>(QOpenGLContext::currentContext());-
434 if (ctx == 0)
ctx == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
435 return QImageTextureGlyphCache::maxTextureHeight();
never executed: return QImageTextureGlyphCache::maxTextureHeight();
0
436-
437 if (ctx->d_func()->workaround_brokenTexSubImage)
ctx->d_func()-...kenTexSubImageDescription
TRUEnever evaluated
FALSEnever evaluated
0
438 return qMin(1024, ctx->d_func()->maxTextureSize());
never executed: return qMin(1024, ctx->d_func()->maxTextureSize());
0
439 else-
440 return ctx->d_func()->maxTextureSize();
never executed: return ctx->d_func()->maxTextureSize();
0
441}-
442-
443void QOpenGLTextureGlyphCache::clear()-
444{-
445 if (m_textureResource)
m_textureResourceDescription
TRUEnever evaluated
FALSEnever evaluated
0
446 m_textureResource->free();
never executed: m_textureResource->free();
0
447 m_textureResource = 0;-
448-
449 delete m_blitProgram;-
450 m_blitProgram = 0;-
451-
452 m_w = 0;-
453 m_h = 0;-
454 m_cx = 0;-
455 m_cy = 0;-
456 m_currentRowHeight = 0;-
457 coords.clear();-
458}
never executed: end of block
0
459-
460QT_END_NAMESPACE-
Source codeSwitch to Preprocessed file
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