qeglconvenience.cpp

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2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
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31**-
32****************************************************************************/-
33-
34#include <QByteArray>-
35#include <QOpenGLContext>-
36-
37#ifdef Q_OS_LINUX-
38#include <sys/ioctl.h>-
39#include <linux/fb.h>-
40#endif-
41#include <private/qmath_p.h>-
42-
43#include "qeglconvenience_p.h"-
44-
45#ifndef EGL_OPENGL_ES3_BIT_KHR-
46#define EGL_OPENGL_ES3_BIT_KHR 0x0040-
47#endif-
48-
49QT_BEGIN_NAMESPACE-
50-
51QVector<EGLint> q_createConfigAttributesFromFormat(const QSurfaceFormat &format)-
52{-
53 int redSize = format.redBufferSize();-
54 int greenSize = format.greenBufferSize();-
55 int blueSize = format.blueBufferSize();-
56 int alphaSize = format.alphaBufferSize();-
57 int depthSize = format.depthBufferSize();-
58 int stencilSize = format.stencilBufferSize();-
59 int sampleCount = format.samples();-
60-
61 QVector<EGLint> configAttributes;-
62-
63 // Map default, unspecified values (-1) to 0. This is important due to sorting rule #3-
64 // in section 3.4.1 of the spec and allows picking a potentially faster 16-bit config-
65 // over 32-bit ones when there is no explicit request for the color channel sizes:-
66 //-
67 // The red/green/blue sizes have a sort priority of 3, so they are sorted by-
68 // first. (unless a caveat like SLOW or NON_CONFORMANT is present) The sort order is-
69 // Special and described as "by larger _total_ number of color bits.". So EGL will put-
70 // 32-bit configs in the list before the 16-bit configs. However, the spec also goes-
71 // on to say "If the requested number of bits in attrib_list for a particular-
72 // component is 0, then the number of bits for that component is not considered". This-
73 // part of the spec also seems to imply that setting the red/green/blue bits to zero-
74 // means none of the components are considered and EGL disregards the entire sorting-
75 // rule. It then looks to the next highest priority rule, which is-
76 // EGL_BUFFER_SIZE. Despite the selection criteria being "AtLeast" for-
77 // EGL_BUFFER_SIZE, it's sort order is "smaller" meaning 16-bit configs are put in the-
78 // list before 32-bit configs.-
79 //-
80 // This also means that explicitly specifying a size like 565 will still result in-
81 // having larger (888) configs first in the returned list. We need to handle this-
82 // ourselves later by manually filtering the list, instead of just blindly taking the-
83 // first config from it.-
84-
85 configAttributes.append(EGL_RED_SIZE);-
86 configAttributes.append(redSize > 0 ? redSize : 0);-
87-
88 configAttributes.append(EGL_GREEN_SIZE);-
89 configAttributes.append(greenSize > 0 ? greenSize : 0);-
90-
91 configAttributes.append(EGL_BLUE_SIZE);-
92 configAttributes.append(blueSize > 0 ? blueSize : 0);-
93-
94 configAttributes.append(EGL_ALPHA_SIZE);-
95 configAttributes.append(alphaSize > 0 ? alphaSize : 0);-
96-
97 configAttributes.append(EGL_DEPTH_SIZE);-
98 configAttributes.append(depthSize > 0 ? depthSize : 0);-
99-
100 configAttributes.append(EGL_STENCIL_SIZE);-
101 configAttributes.append(stencilSize > 0 ? stencilSize : 0);-
102-
103 configAttributes.append(EGL_SAMPLES);-
104 configAttributes.append(sampleCount > 0 ? sampleCount : 0);-
105-
106 configAttributes.append(EGL_SAMPLE_BUFFERS);-
107 configAttributes.append(sampleCount > 0);-
108-
109 return configAttributes;
never executed: return configAttributes;
0
110}-
111-
112bool q_reduceConfigAttributes(QVector<EGLint> *configAttributes)-
113{-
114 int i = -1;-
115 // Reduce the complexity of a configuration request to ask for less-
116 // because the previous request did not result in success. Returns-
117 // true if the complexity was reduced, or false if no further-
118 // reductions in complexity are possible.-
119-
120 i = configAttributes->indexOf(EGL_SWAP_BEHAVIOR);-
121 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
122 configAttributes->remove(i,2);-
123 }
never executed: end of block
0
124-
125#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT-
126 // For OpenVG, we sometimes try to create a surface using a pre-multiplied format. If we can't-
127 // find a config which supports pre-multiplied formats, remove the flag on the surface type:-
128-
129 i = configAttributes->indexOf(EGL_SURFACE_TYPE);-
130 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
131 EGLint surfaceType = configAttributes->at(i +1);-
132 if (surfaceType & EGL_VG_ALPHA_FORMAT_PRE_BIT) {
surfaceType & 0x0040Description
TRUEnever evaluated
FALSEnever evaluated
0
133 surfaceType ^= EGL_VG_ALPHA_FORMAT_PRE_BIT;-
134 configAttributes->replace(i+1,surfaceType);-
135 return true;
never executed: return true;
0
136 }-
137 }
never executed: end of block
0
138#endif-
139-
140 // EGL chooses configs with the highest color depth over-
141 // those with smaller (but faster) lower color depths. One-
142 // way around this is to set EGL_BUFFER_SIZE to 16, which-
143 // trumps the others. Of course, there may not be a 16-bit-
144 // config available, so it's the first restraint we remove.-
145 i = configAttributes->indexOf(EGL_BUFFER_SIZE);-
146 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
147 if (configAttributes->at(i+1) == 16) {
configAttribut...>at(i+1) == 16Description
TRUEnever evaluated
FALSEnever evaluated
0
148 configAttributes->remove(i,2);-
149 return true;
never executed: return true;
0
150 }-
151 }
never executed: end of block
0
152-
153 i = configAttributes->indexOf(EGL_SAMPLES);-
154 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
155 EGLint value = configAttributes->value(i+1, 0);-
156 if (value > 1)
value > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
157 configAttributes->replace(i+1, qMin(EGLint(16), value / 2));
never executed: configAttributes->replace(i+1, qMin(EGLint(16), value / 2));
0
158 else-
159 configAttributes->remove(i, 2);
never executed: configAttributes->remove(i, 2);
0
160 return true;
never executed: return true;
0
161 }-
162-
163 i = configAttributes->indexOf(EGL_SAMPLE_BUFFERS);-
164 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
165 configAttributes->remove(i,2);-
166 return true;
never executed: return true;
0
167 }-
168-
169 i = configAttributes->indexOf(EGL_ALPHA_SIZE);-
170 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
171 configAttributes->remove(i,2);-
172#if defined(EGL_BIND_TO_TEXTURE_RGBA) && defined(EGL_BIND_TO_TEXTURE_RGB)-
173 i = configAttributes->indexOf(EGL_BIND_TO_TEXTURE_RGBA);-
174 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
175 configAttributes->replace(i,EGL_BIND_TO_TEXTURE_RGB);-
176 configAttributes->replace(i+1,true);-
177-
178 }
never executed: end of block
0
179#endif-
180 return true;
never executed: return true;
0
181 }-
182-
183 i = configAttributes->indexOf(EGL_STENCIL_SIZE);-
184 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
185 if (configAttributes->at(i + 1) > 1)
configAttribut...>at(i + 1) > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
186 configAttributes->replace(i + 1, 1);
never executed: configAttributes->replace(i + 1, 1);
0
187 else-
188 configAttributes->remove(i, 2);
never executed: configAttributes->remove(i, 2);
0
189 return true;
never executed: return true;
0
190 }-
191-
192 i = configAttributes->indexOf(EGL_DEPTH_SIZE);-
193 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
194 if (configAttributes->at(i + 1) > 1)
configAttribut...>at(i + 1) > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
195 configAttributes->replace(i + 1, 1);
never executed: configAttributes->replace(i + 1, 1);
0
196 else-
197 configAttributes->remove(i, 2);
never executed: configAttributes->remove(i, 2);
0
198 return true;
never executed: return true;
0
199 }-
200#ifdef EGL_BIND_TO_TEXTURE_RGB-
201 i = configAttributes->indexOf(EGL_BIND_TO_TEXTURE_RGB);-
202 if (i >= 0) {
i >= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
203 configAttributes->remove(i,2);-
204 return true;
never executed: return true;
0
205 }-
206#endif-
207-
208 return false;
never executed: return false;
0
209}-
210-
211QEglConfigChooser::QEglConfigChooser(EGLDisplay display)-
212 : m_display(display)-
213 , m_surfaceType(EGL_WINDOW_BIT)-
214 , m_ignore(false)-
215 , m_confAttrRed(0)-
216 , m_confAttrGreen(0)-
217 , m_confAttrBlue(0)-
218 , m_confAttrAlpha(0)-
219{-
220}
never executed: end of block
0
221-
222QEglConfigChooser::~QEglConfigChooser()-
223{-
224}-
225-
226EGLConfig QEglConfigChooser::chooseConfig()-
227{-
228 QVector<EGLint> configureAttributes = q_createConfigAttributesFromFormat(m_format);-
229 configureAttributes.append(EGL_SURFACE_TYPE);-
230 configureAttributes.append(surfaceType());-
231-
232 configureAttributes.append(EGL_RENDERABLE_TYPE);-
233 bool needsES2Plus = false;-
234 switch (m_format.renderableType()) {-
235 case QSurfaceFormat::OpenVG:
never executed: case QSurfaceFormat::OpenVG:
0
236 configureAttributes.append(EGL_OPENVG_BIT);-
237 break;
never executed: break;
0
238#ifdef EGL_VERSION_1_4-
239 case QSurfaceFormat::DefaultRenderableType:
never executed: case QSurfaceFormat::DefaultRenderableType:
0
240#ifndef QT_NO_OPENGL-
241 if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL)
QOpenGLContext...Context::LibGLDescription
TRUEnever evaluated
FALSEnever evaluated
0
242 configureAttributes.append(EGL_OPENGL_BIT);
never executed: configureAttributes.append(0x0008);
0
243 else-
244#endif // QT_NO_OPENGL-
245 needsES2Plus = true;
never executed: needsES2Plus = true;
0
246 break;
never executed: break;
0
247 case QSurfaceFormat::OpenGL:
never executed: case QSurfaceFormat::OpenGL:
0
248 configureAttributes.append(EGL_OPENGL_BIT);-
249 break;
never executed: break;
0
250#endif-
251 case QSurfaceFormat::OpenGLES:
never executed: case QSurfaceFormat::OpenGLES:
0
252 if (m_format.majorVersion() == 1) {
m_format.majorVersion() == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
253 configureAttributes.append(EGL_OPENGL_ES_BIT);-
254 break;
never executed: break;
0
255 }-
256 // fall through-
257 default:
code before this statement never executed: default:
never executed: default:
0
258 needsES2Plus = true;-
259 break;
never executed: break;
0
260 }-
261 if (needsES2Plus) {
needsES2PlusDescription
TRUEnever evaluated
FALSEnever evaluated
0
262 if (m_format.majorVersion() >= 3 && q_hasEglExtension(display(), "EGL_KHR_create_context"))
m_format.majorVersion() >= 3Description
TRUEnever evaluated
FALSEnever evaluated
q_hasEglExtens...eate_context")Description
TRUEnever evaluated
FALSEnever evaluated
0
263 configureAttributes.append(EGL_OPENGL_ES3_BIT_KHR);
never executed: configureAttributes.append(0x0040);
0
264 else-
265 configureAttributes.append(EGL_OPENGL_ES2_BIT);
never executed: configureAttributes.append(0x0004);
0
266 }-
267 configureAttributes.append(EGL_NONE);-
268-
269 EGLConfig cfg = 0;-
270 do {-
271 // Get the number of matching configurations for this set of properties.-
272 EGLint matching = 0;-
273 if (!eglChooseConfig(display(), configureAttributes.constData(), 0, 0, &matching) || !matching)
!eglChooseConf... 0, &matching)Description
TRUEnever evaluated
FALSEnever evaluated
!matchingDescription
TRUEnever evaluated
FALSEnever evaluated
0
274 continue;
never executed: continue;
0
275-
276 // Fetch all of the matching configurations and find the-
277 // first that matches the pixel format we wanted.-
278 int i = configureAttributes.indexOf(EGL_RED_SIZE);-
279 m_confAttrRed = configureAttributes.at(i+1);-
280 i = configureAttributes.indexOf(EGL_GREEN_SIZE);-
281 m_confAttrGreen = configureAttributes.at(i+1);-
282 i = configureAttributes.indexOf(EGL_BLUE_SIZE);-
283 m_confAttrBlue = configureAttributes.at(i+1);-
284 i = configureAttributes.indexOf(EGL_ALPHA_SIZE);-
285 m_confAttrAlpha = i == -1 ? 0 : configureAttributes.at(i+1);
i == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
286-
287 QVector<EGLConfig> configs(matching);-
288 eglChooseConfig(display(), configureAttributes.constData(), configs.data(), configs.size(), &matching);-
289 if (!cfg && matching > 0)
!cfgDescription
TRUEnever evaluated
FALSEnever evaluated
matching > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
290 cfg = configs.first();
never executed: cfg = configs.first();
0
291-
292 // Filter the list. Due to the EGL sorting rules configs with higher depth are-
293 // placed first when the minimum color channel sizes have been specified (i.e. the-
294 // QSurfaceFormat contains color sizes > 0). To prevent returning a 888 config-
295 // when the QSurfaceFormat explicitly asked for 565, go through the returned-
296 // configs and look for one that exactly matches the requested sizes. When no-
297 // sizes have been given, take the first, which will be a config with the smaller-
298 // (e.g. 16-bit) depth.-
299 for (int i = 0; i < configs.size(); ++i) {
i < configs.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
300 if (filterConfig(configs[i]))
filterConfig(configs[i])Description
TRUEnever evaluated
FALSEnever evaluated
0
301 return configs.at(i);
never executed: return configs.at(i);
0
302 }
never executed: end of block
0
303 } while (q_reduceConfigAttributes(&configureAttributes));
never executed: end of block
q_reduceConfig...ureAttributes)Description
TRUEnever evaluated
FALSEnever evaluated
0
304-
305 if (!cfg)
!cfgDescription
TRUEnever evaluated
FALSEnever evaluated
0
306 qWarning("Cannot find EGLConfig, returning null config");
never executed: QMessageLogger(__FILE__, 306, __PRETTY_FUNCTION__).warning("Cannot find EGLConfig, returning null config");
0
307 return cfg;
never executed: return cfg;
0
308}-
309-
310bool QEglConfigChooser::filterConfig(EGLConfig config) const-
311{-
312 // If we are fine with the highest depth (e.g. RGB888 configs) even when something-
313 // smaller (565) was explicitly requested, do nothing.-
314 if (m_ignore)
m_ignoreDescription
TRUEnever evaluated
FALSEnever evaluated
0
315 return true;
never executed: return true;
0
316-
317 EGLint red = 0;-
318 EGLint green = 0;-
319 EGLint blue = 0;-
320 EGLint alpha = 0;-
321-
322 // Compare only if a size was given. Otherwise just accept.-
323 if (m_confAttrRed)
m_confAttrRedDescription
TRUEnever evaluated
FALSEnever evaluated
0
324 eglGetConfigAttrib(display(), config, EGL_RED_SIZE, &red);
never executed: eglGetConfigAttrib(display(), config, 0x3024, &red);
0
325 if (m_confAttrGreen)
m_confAttrGreenDescription
TRUEnever evaluated
FALSEnever evaluated
0
326 eglGetConfigAttrib(display(), config, EGL_GREEN_SIZE, &green);
never executed: eglGetConfigAttrib(display(), config, 0x3023, &green);
0
327 if (m_confAttrBlue)
m_confAttrBlueDescription
TRUEnever evaluated
FALSEnever evaluated
0
328 eglGetConfigAttrib(display(), config, EGL_BLUE_SIZE, &blue);
never executed: eglGetConfigAttrib(display(), config, 0x3022, &blue);
0
329 if (m_confAttrAlpha)
m_confAttrAlphaDescription
TRUEnever evaluated
FALSEnever evaluated
0
330 eglGetConfigAttrib(display(), config, EGL_ALPHA_SIZE, &alpha);
never executed: eglGetConfigAttrib(display(), config, 0x3021, &alpha);
0
331-
332 return red == m_confAttrRed && green == m_confAttrGreen
never executed: return red == m_confAttrRed && green == m_confAttrGreen && blue == m_confAttrBlue && alpha == m_confAttrAlpha;
red == m_confAttrRedDescription
TRUEnever evaluated
FALSEnever evaluated
green == m_confAttrGreenDescription
TRUEnever evaluated
FALSEnever evaluated
0
333 && blue == m_confAttrBlue && alpha == m_confAttrAlpha;
never executed: return red == m_confAttrRed && green == m_confAttrGreen && blue == m_confAttrBlue && alpha == m_confAttrAlpha;
blue == m_confAttrBlueDescription
TRUEnever evaluated
FALSEnever evaluated
alpha == m_confAttrAlphaDescription
TRUEnever evaluated
FALSEnever evaluated
0
334}-
335-
336EGLConfig q_configFromGLFormat(EGLDisplay display, const QSurfaceFormat &format, bool highestPixelFormat, int surfaceType)-
337{-
338 QEglConfigChooser chooser(display);-
339 chooser.setSurfaceFormat(format);-
340 chooser.setSurfaceType(surfaceType);-
341 chooser.setIgnoreColorChannels(highestPixelFormat);-
342-
343 return chooser.chooseConfig();
never executed: return chooser.chooseConfig();
0
344}-
345-
346QSurfaceFormat q_glFormatFromConfig(EGLDisplay display, const EGLConfig config, const QSurfaceFormat &referenceFormat)-
347{-
348 QSurfaceFormat format;-
349 EGLint redSize = 0;-
350 EGLint greenSize = 0;-
351 EGLint blueSize = 0;-
352 EGLint alphaSize = 0;-
353 EGLint depthSize = 0;-
354 EGLint stencilSize = 0;-
355 EGLint sampleCount = 0;-
356 EGLint renderableType = 0;-
357-
358 eglGetConfigAttrib(display, config, EGL_RED_SIZE, &redSize);-
359 eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &greenSize);-
360 eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &blueSize);-
361 eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &alphaSize);-
362 eglGetConfigAttrib(display, config, EGL_DEPTH_SIZE, &depthSize);-
363 eglGetConfigAttrib(display, config, EGL_STENCIL_SIZE, &stencilSize);-
364 eglGetConfigAttrib(display, config, EGL_SAMPLES, &sampleCount);-
365 eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType);-
366-
367 if (referenceFormat.renderableType() == QSurfaceFormat::OpenVG && (renderableType & EGL_OPENVG_BIT))
referenceForma...Format::OpenVGDescription
TRUEnever evaluated
FALSEnever evaluated
(renderableType & 0x0002)Description
TRUEnever evaluated
FALSEnever evaluated
0
368 format.setRenderableType(QSurfaceFormat::OpenVG);
never executed: format.setRenderableType(QSurfaceFormat::OpenVG);
0
369#ifdef EGL_VERSION_1_4-
370 else if (referenceFormat.renderableType() == QSurfaceFormat::OpenGL
referenceForma...Format::OpenGLDescription
TRUEnever evaluated
FALSEnever evaluated
0
371 && (renderableType & EGL_OPENGL_BIT))
(renderableType & 0x0008)Description
TRUEnever evaluated
FALSEnever evaluated
0
372 format.setRenderableType(QSurfaceFormat::OpenGL);
never executed: format.setRenderableType(QSurfaceFormat::OpenGL);
0
373 else if (referenceFormat.renderableType() == QSurfaceFormat::DefaultRenderableType
referenceForma...RenderableTypeDescription
TRUEnever evaluated
FALSEnever evaluated
0
374#ifndef QT_NO_OPENGL-
375 && QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL
QOpenGLContext...Context::LibGLDescription
TRUEnever evaluated
FALSEnever evaluated
0
376#endif-
377 && (renderableType & EGL_OPENGL_BIT))
(renderableType & 0x0008)Description
TRUEnever evaluated
FALSEnever evaluated
0
378 format.setRenderableType(QSurfaceFormat::OpenGL);
never executed: format.setRenderableType(QSurfaceFormat::OpenGL);
0
379#endif-
380 else-
381 format.setRenderableType(QSurfaceFormat::OpenGLES);
never executed: format.setRenderableType(QSurfaceFormat::OpenGLES);
0
382-
383 format.setRedBufferSize(redSize);-
384 format.setGreenBufferSize(greenSize);-
385 format.setBlueBufferSize(blueSize);-
386 format.setAlphaBufferSize(alphaSize);-
387 format.setDepthBufferSize(depthSize);-
388 format.setStencilBufferSize(stencilSize);-
389 format.setSamples(sampleCount);-
390 format.setStereo(false); // EGL doesn't support stereo buffers-
391 format.setSwapInterval(referenceFormat.swapInterval());-
392-
393 // Clear the EGL error state because some of the above may-
394 // have errored out because the attribute is not applicable-
395 // to the surface type. Such errors don't matter.-
396 eglGetError();-
397-
398 return format;
never executed: return format;
0
399}-
400-
401bool q_hasEglExtension(EGLDisplay display, const char* extensionName)-
402{-
403 QList<QByteArray> extensions =-
404 QByteArray(reinterpret_cast<const char *>-
405 (eglQueryString(display, EGL_EXTENSIONS))).split(' ');-
406 return extensions.contains(extensionName);
never executed: return extensions.contains(extensionName);
0
407}-
408-
409struct AttrInfo { EGLint attr; const char *name; };-
410static struct AttrInfo attrs[] = {-
411 {EGL_BUFFER_SIZE, "EGL_BUFFER_SIZE"},-
412 {EGL_ALPHA_SIZE, "EGL_ALPHA_SIZE"},-
413 {EGL_BLUE_SIZE, "EGL_BLUE_SIZE"},-
414 {EGL_GREEN_SIZE, "EGL_GREEN_SIZE"},-
415 {EGL_RED_SIZE, "EGL_RED_SIZE"},-
416 {EGL_DEPTH_SIZE, "EGL_DEPTH_SIZE"},-
417 {EGL_STENCIL_SIZE, "EGL_STENCIL_SIZE"},-
418 {EGL_CONFIG_CAVEAT, "EGL_CONFIG_CAVEAT"},-
419 {EGL_CONFIG_ID, "EGL_CONFIG_ID"},-
420 {EGL_LEVEL, "EGL_LEVEL"},-
421 {EGL_MAX_PBUFFER_HEIGHT, "EGL_MAX_PBUFFER_HEIGHT"},-
422 {EGL_MAX_PBUFFER_PIXELS, "EGL_MAX_PBUFFER_PIXELS"},-
423 {EGL_MAX_PBUFFER_WIDTH, "EGL_MAX_PBUFFER_WIDTH"},-
424 {EGL_NATIVE_RENDERABLE, "EGL_NATIVE_RENDERABLE"},-
425 {EGL_NATIVE_VISUAL_ID, "EGL_NATIVE_VISUAL_ID"},-
426 {EGL_NATIVE_VISUAL_TYPE, "EGL_NATIVE_VISUAL_TYPE"},-
427 {EGL_SAMPLES, "EGL_SAMPLES"},-
428 {EGL_SAMPLE_BUFFERS, "EGL_SAMPLE_BUFFERS"},-
429 {EGL_SURFACE_TYPE, "EGL_SURFACE_TYPE"},-
430 {EGL_TRANSPARENT_TYPE, "EGL_TRANSPARENT_TYPE"},-
431 {EGL_TRANSPARENT_BLUE_VALUE, "EGL_TRANSPARENT_BLUE_VALUE"},-
432 {EGL_TRANSPARENT_GREEN_VALUE, "EGL_TRANSPARENT_GREEN_VALUE"},-
433 {EGL_TRANSPARENT_RED_VALUE, "EGL_TRANSPARENT_RED_VALUE"},-
434 {EGL_BIND_TO_TEXTURE_RGB, "EGL_BIND_TO_TEXTURE_RGB"},-
435 {EGL_BIND_TO_TEXTURE_RGBA, "EGL_BIND_TO_TEXTURE_RGBA"},-
436 {EGL_MIN_SWAP_INTERVAL, "EGL_MIN_SWAP_INTERVAL"},-
437 {EGL_MAX_SWAP_INTERVAL, "EGL_MAX_SWAP_INTERVAL"},-
438 {-1, 0}};-
439-
440void q_printEglConfig(EGLDisplay display, EGLConfig config)-
441{-
442 EGLint index;-
443 for (index = 0; attrs[index].attr != -1; ++index) {
attrs[index].attr != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
444 EGLint value;-
445 if (eglGetConfigAttrib(display, config, attrs[index].attr, &value)) {
eglGetConfigAt....attr, &value)Description
TRUEnever evaluated
FALSEnever evaluated
0
446 qDebug("\t%s: %d", attrs[index].name, (int)value);-
447 }
never executed: end of block
0
448 }
never executed: end of block
0
449}
never executed: end of block
0
450-
451#ifdef Q_OS_UNIX-
452-
453QSizeF q_physicalScreenSizeFromFb(int framebufferDevice, const QSize &screenSize)-
454{-
455#ifndef Q_OS_LINUX-
456 Q_UNUSED(framebufferDevice)-
457#endif-
458 const int defaultPhysicalDpi = 100;-
459 static QSizeF size;-
460-
461 if (size.isEmpty()) {
size.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
462 // Note: in millimeters-
463 int width = qEnvironmentVariableIntValue("QT_QPA_EGLFS_PHYSICAL_WIDTH");-
464 int height = qEnvironmentVariableIntValue("QT_QPA_EGLFS_PHYSICAL_HEIGHT");-
465-
466 if (width && height) {
widthDescription
TRUEnever evaluated
FALSEnever evaluated
heightDescription
TRUEnever evaluated
FALSEnever evaluated
0
467 size.setWidth(width);-
468 size.setHeight(height);-
469 return size;
never executed: return size;
0
470 }-
471-
472 int w = -1;-
473 int h = -1;-
474 QSize screenResolution;-
475#ifdef Q_OS_LINUX-
476 struct fb_var_screeninfo vinfo;-
477-
478 if (framebufferDevice != -1) {
framebufferDevice != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
479 if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) {
ioctl(framebuf... &vinfo) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
480 qWarning("eglconvenience: Could not query screen info");-
481 } else {
never executed: end of block
0
482 w = vinfo.width;-
483 h = vinfo.height;-
484 screenResolution = QSize(vinfo.xres, vinfo.yres);-
485 }
never executed: end of block
0
486 } else-
487#endif-
488 {-
489 // Use the provided screen size, when available, since some platforms may have their own-
490 // specific way to query it. Otherwise try querying it from the framebuffer.-
491 screenResolution = screenSize.isEmpty() ? q_screenSizeFromFb(framebufferDevice) : screenSize;
screenSize.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
492 }
never executed: end of block
0
493-
494 size.setWidth(w <= 0 ? screenResolution.width() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w));-
495 size.setHeight(h <= 0 ? screenResolution.height() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h));-
496-
497 if (w <= 0 || h <= 0)
w <= 0Description
TRUEnever evaluated
FALSEnever evaluated
h <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
498 qWarning("Unable to query physical screen size, defaulting to %d dpi.\n"
never executed: QMessageLogger(__FILE__, 498, __PRETTY_FUNCTION__).warning("Unable to query physical screen size, defaulting to %d dpi.\n" "To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH " "and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).", defaultPhysicalDpi);
0
499 "To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH "
never executed: QMessageLogger(__FILE__, 498, __PRETTY_FUNCTION__).warning("Unable to query physical screen size, defaulting to %d dpi.\n" "To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH " "and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).", defaultPhysicalDpi);
0
500 "and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).", defaultPhysicalDpi);
never executed: QMessageLogger(__FILE__, 498, __PRETTY_FUNCTION__).warning("Unable to query physical screen size, defaulting to %d dpi.\n" "To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH " "and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).", defaultPhysicalDpi);
0
501 }
never executed: end of block
0
502-
503 return size;
never executed: return size;
0
504}-
505-
506QSize q_screenSizeFromFb(int framebufferDevice)-
507{-
508#ifndef Q_OS_LINUX-
509 Q_UNUSED(framebufferDevice)-
510#endif-
511 const int defaultWidth = 800;-
512 const int defaultHeight = 600;-
513 static QSize size;-
514-
515 if (size.isEmpty()) {
size.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
516 int width = qEnvironmentVariableIntValue("QT_QPA_EGLFS_WIDTH");-
517 int height = qEnvironmentVariableIntValue("QT_QPA_EGLFS_HEIGHT");-
518-
519 if (width && height) {
widthDescription
TRUEnever evaluated
FALSEnever evaluated
heightDescription
TRUEnever evaluated
FALSEnever evaluated
0
520 size.setWidth(width);-
521 size.setHeight(height);-
522 return size;
never executed: return size;
0
523 }-
524-
525#ifdef Q_OS_LINUX-
526 struct fb_var_screeninfo vinfo;-
527 int xres = -1;-
528 int yres = -1;-
529-
530 if (framebufferDevice != -1) {
framebufferDevice != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
531 if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) {
ioctl(framebuf... &vinfo) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
532 qWarning("eglconvenience: Could not read screen info");-
533 } else {
never executed: end of block
0
534 xres = vinfo.xres;-
535 yres = vinfo.yres;-
536 }
never executed: end of block
0
537 }-
538-
539 size.setWidth(xres <= 0 ? defaultWidth : xres);-
540 size.setHeight(yres <= 0 ? defaultHeight : yres);-
541#else-
542 size.setWidth(defaultWidth);-
543 size.setHeight(defaultHeight);-
544#endif-
545 }
never executed: end of block
0
546-
547 return size;
never executed: return size;
0
548}-
549-
550int q_screenDepthFromFb(int framebufferDevice)-
551{-
552#ifndef Q_OS_LINUX-
553 Q_UNUSED(framebufferDevice)-
554#endif-
555 const int defaultDepth = 32;-
556 static int depth = qEnvironmentVariableIntValue("QT_QPA_EGLFS_DEPTH");-
557-
558 if (depth == 0) {
depth == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
559#ifdef Q_OS_LINUX-
560 struct fb_var_screeninfo vinfo;-
561-
562 if (framebufferDevice != -1) {
framebufferDevice != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
563 if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1)
ioctl(framebuf... &vinfo) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
564 qWarning("eglconvenience: Could not query screen info");
never executed: QMessageLogger(__FILE__, 564, __PRETTY_FUNCTION__).warning("eglconvenience: Could not query screen info");
0
565 else-
566 depth = vinfo.bits_per_pixel;
never executed: depth = vinfo.bits_per_pixel;
0
567 }-
568-
569 if (depth <= 0)
depth <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
570 depth = defaultDepth;
never executed: depth = defaultDepth;
0
571#else-
572 depth = defaultDepth;-
573#endif-
574 }
never executed: end of block
0
575-
576 return depth;
never executed: return depth;
0
577}-
578-
579qreal q_refreshRateFromFb(int framebufferDevice)-
580{-
581#ifndef Q_OS_LINUX-
582 Q_UNUSED(framebufferDevice)-
583#endif-
584-
585 static qreal rate = 0;-
586-
587#ifdef Q_OS_LINUX-
588 if (rate == 0) {
rate == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
589 if (framebufferDevice != -1) {
framebufferDevice != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
590 struct fb_var_screeninfo vinfo;-
591 if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) != -1) {
ioctl(framebuf... &vinfo) != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
592 const quint64 quot = quint64(vinfo.left_margin + vinfo.right_margin + vinfo.xres + vinfo.hsync_len)-
593 * quint64(vinfo.upper_margin + vinfo.lower_margin + vinfo.yres + vinfo.vsync_len)-
594 * vinfo.pixclock;-
595 if (quot)
quotDescription
TRUEnever evaluated
FALSEnever evaluated
0
596 rate = 1000000000000LLU / quot;
never executed: rate = 1000000000000LLU / quot;
0
597 } else {
never executed: end of block
0
598 qWarning("eglconvenience: Could not query screen info");-
599 }
never executed: end of block
0
600 }-
601 }
never executed: end of block
0
602#endif-
603-
604 if (rate == 0)
rate == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
605 rate = 60;
never executed: rate = 60;
0
606-
607 return rate;
never executed: return rate;
0
608}-
609-
610#endif // Q_OS_UNIX-
611-
612QT_END_NAMESPACE-
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