diff options
Diffstat (limited to 'src/plugins/platforms/glxconvenience/qglxconvenience.cpp')
| -rw-r--r-- | src/plugins/platforms/glxconvenience/qglxconvenience.cpp | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/src/plugins/platforms/glxconvenience/qglxconvenience.cpp b/src/plugins/platforms/glxconvenience/qglxconvenience.cpp new file mode 100644 index 0000000..7cee3e2 --- /dev/null +++ b/src/plugins/platforms/glxconvenience/qglxconvenience.cpp @@ -0,0 +1,243 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qglxconvenience.h" + +#include <QtCore/QVector> + +enum { + XFocusOut = FocusOut, + XFocusIn = FocusIn, + XKeyPress = KeyPress, + XKeyRelease = KeyRelease, + XNone = None, + XRevertToParent = RevertToParent, + XGrayScale = GrayScale, + XCursorShape = CursorShape +}; +#undef FocusOut +#undef FocusIn +#undef KeyPress +#undef KeyRelease +#undef None +#undef RevertToParent +#undef GrayScale +#undef CursorShape + +#ifdef FontChange +#undef FontChange +#endif + +QVector<int> qglx_buildSpec(const QPlatformWindowFormat &format, int drawableBit) +{ + QVector<int> spec(48); + int i = 0; + + spec[i++] = GLX_LEVEL; + spec[i++] = 0; + spec[i++] = GLX_DRAWABLE_TYPE; spec[i++] = drawableBit; + + if (format.rgba()) { + spec[i++] = GLX_RENDER_TYPE; spec[i++] = GLX_RGBA_BIT; + spec[i++] = GLX_RED_SIZE; spec[i++] = (format.redBufferSize() == -1) ? 1 : format.redBufferSize(); + spec[i++] = GLX_GREEN_SIZE; spec[i++] = (format.greenBufferSize() == -1) ? 1 : format.greenBufferSize(); + spec[i++] = GLX_BLUE_SIZE; spec[i++] = (format.blueBufferSize() == -1) ? 1 : format.blueBufferSize(); + if (format.alpha()) { + spec[i++] = GLX_ALPHA_SIZE; spec[i++] = (format.alphaBufferSize() == -1) ? 1 : format.alphaBufferSize(); + } + + spec[i++] = GLX_ACCUM_RED_SIZE; spec[i++] = (format.accumBufferSize() == -1) ? 1 : format.accumBufferSize(); + spec[i++] = GLX_ACCUM_GREEN_SIZE; spec[i++] = (format.accumBufferSize() == -1) ? 1 : format.accumBufferSize(); + spec[i++] = GLX_ACCUM_BLUE_SIZE; spec[i++] = (format.accumBufferSize() == -1) ? 1 : format.accumBufferSize(); + + if (format.alpha()) { + spec[i++] = GLX_ACCUM_ALPHA_SIZE; spec[i++] = (format.accumBufferSize() == -1) ? 1 : format.accumBufferSize(); + } + + } else { + spec[i++] = GLX_RENDER_TYPE; spec[i++] = GLX_COLOR_INDEX_BIT; //I'm really not sure if this works.... + spec[i++] = GLX_BUFFER_SIZE; spec[i++] = 8; + } + + spec[i++] = GLX_DOUBLEBUFFER; spec[i++] = format.doubleBuffer() ? True : False; + spec[i++] = GLX_STEREO; spec[i++] = format.stereo() ? True : False; + + if (format.depth()) { + spec[i++] = GLX_DEPTH_SIZE; spec[i++] = (format.depthBufferSize() == -1) ? 1 : format.depthBufferSize(); + } + + if (format.stencil()) { + spec[i++] = GLX_STENCIL_SIZE; spec[i++] = (format.stencilBufferSize() == -1) ? 1 : format.stencilBufferSize(); + } + if (format.sampleBuffers()) { + spec[i++] = GLX_SAMPLE_BUFFERS_ARB; + spec[i++] = 1; + spec[i++] = GLX_SAMPLES_ARB; + spec[i++] = format.samples() == -1 ? 4 : format.samples(); + } + + spec[i++] = XNone; + return spec; +} + +GLXFBConfig qglx_findConfig(Display *display, int screen , const QPlatformWindowFormat &format, int drawableBit) +{ + bool reduced = true; + GLXFBConfig chosenConfig = 0; + QPlatformWindowFormat reducedFormat = format; + while (!chosenConfig && reduced) { + QVector<int> spec = qglx_buildSpec(reducedFormat, drawableBit); + int confcount = 0; + GLXFBConfig *configs; + configs = glXChooseFBConfig(display, screen,spec.constData(),&confcount); + if (confcount) + { + for (int i = 0; i < confcount; i++) { + chosenConfig = configs[i]; + // Make sure we try to get an ARGB visual if the format asked for an alpha: + if (reducedFormat.alpha()) { + int alphaSize; + glXGetFBConfigAttrib(display,configs[i],GLX_ALPHA_SIZE,&alphaSize); + if (alphaSize > 0) + break; + } else { + break; // Just choose the first in the list if there's no alpha requested + } + } + + XFree(configs); + } + reducedFormat = qglx_reducePlatformWindowFormat(reducedFormat,&reduced); + } + + if (!chosenConfig) + qWarning("Warning: no suitable glx confiuration found"); + + return chosenConfig; +} + +XVisualInfo *qglx_findVisualInfo(Display *display, int screen, const QPlatformWindowFormat &format) +{ + GLXFBConfig config = qglx_findConfig(display,screen,format); + XVisualInfo *visualInfo = glXGetVisualFromFBConfig(display,config); + return visualInfo; +} + +QPlatformWindowFormat qglx_platformWindowFromGLXFBConfig(Display *display, GLXFBConfig config, GLXContext ctx) +{ + QPlatformWindowFormat format; + int redSize = 0; + int greenSize = 0; + int blueSize = 0; + int alphaSize = 0; + int depthSize = 0; + int stencilSize = 0; + int sampleBuffers = 0; + int sampleCount = 0; + int level = 0; + int rgba = 0; + int stereo = 0; + int accumSizeA = 0; + int accumSizeR = 0; + int accumSizeG = 0; + int accumSizeB = 0; + + XVisualInfo *vi = glXGetVisualFromFBConfig(display,config); + glXGetConfig(display,vi,GLX_RGBA,&rgba); + XFree(vi); + glXGetFBConfigAttrib(display, config, GLX_RED_SIZE, &redSize); + glXGetFBConfigAttrib(display, config, GLX_GREEN_SIZE, &greenSize); + glXGetFBConfigAttrib(display, config, GLX_BLUE_SIZE, &blueSize); + glXGetFBConfigAttrib(display, config, GLX_ALPHA_SIZE, &alphaSize); + glXGetFBConfigAttrib(display, config, GLX_DEPTH_SIZE, &depthSize); + glXGetFBConfigAttrib(display, config, GLX_STENCIL_SIZE, &stencilSize); + glXGetFBConfigAttrib(display, config, GLX_SAMPLES, &sampleBuffers); + glXGetFBConfigAttrib(display, config, GLX_LEVEL, &level); + glXGetFBConfigAttrib(display, config, GLX_STEREO, &stereo); + glXGetFBConfigAttrib(display, config, GLX_ACCUM_ALPHA_SIZE, &accumSizeA); + glXGetFBConfigAttrib(display, config, GLX_ACCUM_RED_SIZE, &accumSizeR); + glXGetFBConfigAttrib(display, config, GLX_ACCUM_GREEN_SIZE, &accumSizeG); + glXGetFBConfigAttrib(display, config, GLX_ACCUM_BLUE_SIZE, &accumSizeB); + + format.setRedBufferSize(redSize); + format.setGreenBufferSize(greenSize); + format.setBlueBufferSize(blueSize); + format.setAlphaBufferSize(alphaSize); + format.setDepthBufferSize(depthSize); + format.setStencilBufferSize(stencilSize); + format.setSampleBuffers(sampleBuffers); + if (format.sampleBuffers()) { + glXGetFBConfigAttrib(display, config, GLX_SAMPLES_ARB, &sampleCount); + format.setSamples(sampleCount); + } + + format.setDirectRendering(glXIsDirect(display, ctx)); + format.setRgba(rgba); + format.setStereo(stereo); + format.setAccumBufferSize(accumSizeB); + + return format; +} + +QPlatformWindowFormat qglx_reducePlatformWindowFormat(const QPlatformWindowFormat &format, bool *reduced) +{ + QPlatformWindowFormat retFormat = format; + *reduced = true; + + if (retFormat.sampleBuffers()) { + retFormat.setSampleBuffers(false); + } else if (retFormat.stereo()) { + retFormat.setStereo(false); + } else if (retFormat.accum()) { + retFormat.setAccum(false); + }else if (retFormat.stencil()) { + retFormat.setStencil(false); + }else if (retFormat.alpha()) { + retFormat.setAlpha(false); + }else if (retFormat.depth()) { + retFormat.setDepth(false); + }else if (retFormat.doubleBuffer()) { + retFormat.setDoubleBuffer(false); + }else{ + *reduced = false; + } + return retFormat; +} |