--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opengl/qgl_win.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,1485 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module 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 <qgl.h>
+#include <qlist.h>
+#include <qmap.h>
+#include <qpixmap.h>
+#include <qevent.h>
+#include <private/qgl_p.h>
+#include <qcolormap.h>
+#include <qvarlengtharray.h>
+#include <qdebug.h>
+#include <qcolor.h>
+
+#include <qt_windows.h>
+
+typedef bool (APIENTRY *PFNWGLGETPIXELFORMATATTRIBIVARB)(HDC hdc,
+ int iPixelFormat,
+ int iLayerPlane,
+ uint nAttributes,
+ const int *piAttributes,
+ int *piValues);
+typedef bool (APIENTRY *PFNWGLCHOOSEPIXELFORMATARB)(HDC hdc,
+ const int *piAttribList,
+ const float *pfAttribFList,
+ uint nMaxFormats,
+ int *piFormats,
+ UINT *nNumFormats);
+#ifndef WGL_ARB_multisample
+#define WGL_SAMPLE_BUFFERS_ARB 0x2041
+#define WGL_SAMPLES_ARB 0x2042
+#endif
+
+#ifndef WGL_ARB_pixel_format
+#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
+#define WGL_DRAW_TO_WINDOW_ARB 0x2001
+#define WGL_DRAW_TO_BITMAP_ARB 0x2002
+#define WGL_ACCELERATION_ARB 0x2003
+#define WGL_NEED_PALETTE_ARB 0x2004
+#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
+#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
+#define WGL_SWAP_METHOD_ARB 0x2007
+#define WGL_NUMBER_OVERLAYS_ARB 0x2008
+#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
+#define WGL_TRANSPARENT_ARB 0x200A
+#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
+#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
+#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
+#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
+#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
+#define WGL_SHARE_DEPTH_ARB 0x200C
+#define WGL_SHARE_STENCIL_ARB 0x200D
+#define WGL_SHARE_ACCUM_ARB 0x200E
+#define WGL_SUPPORT_GDI_ARB 0x200F
+#define WGL_SUPPORT_OPENGL_ARB 0x2010
+#define WGL_DOUBLE_BUFFER_ARB 0x2011
+#define WGL_STEREO_ARB 0x2012
+#define WGL_PIXEL_TYPE_ARB 0x2013
+#define WGL_COLOR_BITS_ARB 0x2014
+#define WGL_RED_BITS_ARB 0x2015
+#define WGL_RED_SHIFT_ARB 0x2016
+#define WGL_GREEN_BITS_ARB 0x2017
+#define WGL_GREEN_SHIFT_ARB 0x2018
+#define WGL_BLUE_BITS_ARB 0x2019
+#define WGL_BLUE_SHIFT_ARB 0x201A
+#define WGL_ALPHA_BITS_ARB 0x201B
+#define WGL_ALPHA_SHIFT_ARB 0x201C
+#define WGL_ACCUM_BITS_ARB 0x201D
+#define WGL_ACCUM_RED_BITS_ARB 0x201E
+#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
+#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
+#define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
+#define WGL_DEPTH_BITS_ARB 0x2022
+#define WGL_STENCIL_BITS_ARB 0x2023
+#define WGL_AUX_BUFFERS_ARB 0x2024
+#define WGL_NO_ACCELERATION_ARB 0x2025
+#define WGL_GENERIC_ACCELERATION_ARB 0x2026
+#define WGL_FULL_ACCELERATION_ARB 0x2027
+#define WGL_SWAP_EXCHANGE_ARB 0x2028
+#define WGL_SWAP_COPY_ARB 0x2029
+#define WGL_SWAP_UNDEFINED_ARB 0x202A
+#define WGL_TYPE_RGBA_ARB 0x202B
+#define WGL_TYPE_COLORINDEX_ARB 0x202C
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QGLCmapPrivate
+{
+public:
+ QGLCmapPrivate() : count(1) { }
+ void ref() { ++count; }
+ bool deref() { return !--count; }
+ uint count;
+
+ enum AllocState{ UnAllocated = 0, Allocated = 0x01, Reserved = 0x02 };
+
+ int maxSize;
+ QVector<uint> colorArray;
+ QVector<quint8> allocArray;
+ QVector<quint8> contextArray;
+ QMap<uint,int> colorMap;
+};
+
+/*****************************************************************************
+ QColorMap class - temporarily here, until it is ready for prime time
+ *****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QColorMap class
+**
+****************************************************************************/
+
+class QGLCmapPrivate;
+
+class /*Q_EXPORT*/ QGLCmap
+{
+public:
+ enum Flags { Reserved = 0x01 };
+
+ QGLCmap(int maxSize = 256);
+ QGLCmap(const QGLCmap& map);
+ ~QGLCmap();
+
+ QGLCmap& operator=(const QGLCmap& map);
+
+ // isEmpty and/or isNull ?
+ int size() const;
+ int maxSize() const;
+
+ void resize(int newSize);
+
+ int find(QRgb color) const;
+ int findNearest(QRgb color) const;
+ int allocate(QRgb color, uint flags = 0, quint8 context = 0);
+
+ void setEntry(int idx, QRgb color, uint flags = 0, quint8 context = 0);
+
+ const QRgb* colors() const;
+
+private:
+ void detach();
+ QGLCmapPrivate* d;
+};
+
+
+QGLCmap::QGLCmap(int maxSize) // add a bool prealloc?
+{
+ d = new QGLCmapPrivate;
+ d->maxSize = maxSize;
+}
+
+
+QGLCmap::QGLCmap(const QGLCmap& map)
+{
+ d = map.d;
+ d->ref();
+}
+
+
+QGLCmap::~QGLCmap()
+{
+ if (d && d->deref())
+ delete d;
+ d = 0;
+}
+
+
+QGLCmap& QGLCmap::operator=(const QGLCmap& map)
+{
+ map.d->ref();
+ if (d->deref())
+ delete d;
+ d = map.d;
+ return *this;
+}
+
+
+int QGLCmap::size() const
+{
+ return d->colorArray.size();
+}
+
+
+int QGLCmap::maxSize() const
+{
+ return d->maxSize;
+}
+
+
+void QGLCmap::detach()
+{
+ if (d->count != 1) {
+ d->deref();
+ QGLCmapPrivate* newd = new QGLCmapPrivate;
+ newd->maxSize = d->maxSize;
+ newd->colorArray = d->colorArray;
+ newd->allocArray = d->allocArray;
+ newd->contextArray = d->contextArray;
+ newd->colorArray.detach();
+ newd->allocArray.detach();
+ newd->contextArray.detach();
+ newd->colorMap = d->colorMap;
+ d = newd;
+ }
+}
+
+
+void QGLCmap::resize(int newSize)
+{
+ if (newSize < 0 || newSize > d->maxSize) {
+ qWarning("QGLCmap::resize(): size out of range");
+ return;
+ }
+ int oldSize = size();
+ detach();
+ //if shrinking; remove the lost elems from colorMap
+ d->colorArray.resize(newSize);
+ d->allocArray.resize(newSize);
+ d->contextArray.resize(newSize);
+ if (newSize > oldSize) {
+ memset(d->allocArray.data() + oldSize, 0, newSize - oldSize);
+ memset(d->contextArray.data() + oldSize, 0, newSize - oldSize);
+ }
+}
+
+
+int QGLCmap::find(QRgb color) const
+{
+ QMap<uint,int>::ConstIterator it = d->colorMap.find(color);
+ if (it != d->colorMap.end())
+ return *it;
+ return -1;
+}
+
+
+int QGLCmap::findNearest(QRgb color) const
+{
+ int idx = find(color);
+ if (idx >= 0)
+ return idx;
+ int mapSize = size();
+ int mindist = 200000;
+ int r = qRed(color);
+ int g = qGreen(color);
+ int b = qBlue(color);
+ int rx, gx, bx, dist;
+ for (int i=0; i < mapSize; i++) {
+ if (!(d->allocArray[i] & QGLCmapPrivate::Allocated))
+ continue;
+ QRgb ci = d->colorArray[i];
+ rx = r - qRed(ci);
+ gx = g - qGreen(ci);
+ bx = b - qBlue(ci);
+ dist = rx*rx + gx*gx + bx*bx; // calculate distance
+ if (dist < mindist) { // minimal?
+ mindist = dist;
+ idx = i;
+ }
+ }
+ return idx;
+}
+
+
+
+
+// Does not always allocate; returns existing c idx if found
+
+int QGLCmap::allocate(QRgb color, uint flags, quint8 context)
+{
+ int idx = find(color);
+ if (idx >= 0)
+ return idx;
+
+ int mapSize = d->colorArray.size();
+ int newIdx = d->allocArray.indexOf(QGLCmapPrivate::UnAllocated);
+
+ if (newIdx < 0) { // Must allocate more room
+ if (mapSize < d->maxSize) {
+ newIdx = mapSize;
+ mapSize++;
+ resize(mapSize);
+ }
+ else {
+ //# add a bool param that says what to do in case no more room -
+ // fail (-1) or return nearest?
+ return -1;
+ }
+ }
+
+ d->colorArray[newIdx] = color;
+ if (flags & QGLCmap::Reserved) {
+ d->allocArray[newIdx] = QGLCmapPrivate::Reserved;
+ }
+ else {
+ d->allocArray[newIdx] = QGLCmapPrivate::Allocated;
+ d->colorMap.insert(color, newIdx);
+ }
+ d->contextArray[newIdx] = context;
+ return newIdx;
+}
+
+
+void QGLCmap::setEntry(int idx, QRgb color, uint flags, quint8 context)
+{
+ if (idx < 0 || idx >= d->maxSize) {
+ qWarning("QGLCmap::set(): Index out of range");
+ return;
+ }
+ detach();
+ int mapSize = size();
+ if (idx >= mapSize) {
+ mapSize = idx + 1;
+ resize(mapSize);
+ }
+ d->colorArray[idx] = color;
+ if (flags & QGLCmap::Reserved) {
+ d->allocArray[idx] = QGLCmapPrivate::Reserved;
+ }
+ else {
+ d->allocArray[idx] = QGLCmapPrivate::Allocated;
+ d->colorMap.insert(color, idx);
+ }
+ d->contextArray[idx] = context;
+}
+
+
+const QRgb* QGLCmap::colors() const
+{
+ return d->colorArray.data();
+}
+
+
+
+/*****************************************************************************
+ QGLFormat Win32/WGL-specific code
+ *****************************************************************************/
+
+
+void qwglError(const char* method, const char* func)
+{
+#ifndef QT_NO_DEBUG
+ char* lpMsgBuf;
+ FormatMessageA(
+ FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+ 0, GetLastError(),
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ (char*) &lpMsgBuf, 0, 0);
+ qWarning("%s : %s failed: %s", method, func, lpMsgBuf);
+ LocalFree(lpMsgBuf);
+#else
+ Q_UNUSED(method);
+ Q_UNUSED(func);
+#endif
+}
+
+
+
+bool QGLFormat::hasOpenGL()
+{
+ return true;
+}
+
+static bool opengl32dll = false;
+
+bool QGLFormat::hasOpenGLOverlays()
+{
+ // workaround for matrox driver:
+ // make a cheap call to opengl to force loading of DLL
+ if (!opengl32dll) {
+ GLint params;
+ glGetIntegerv(GL_DEPTH_BITS, ¶ms);
+ opengl32dll = true;
+ }
+
+ static bool checkDone = false;
+ static bool hasOl = false;
+
+ if (!checkDone) {
+ checkDone = true;
+ HDC display_dc = GetDC(0);
+ int pfiMax = DescribePixelFormat(display_dc, 0, 0, NULL);
+ PIXELFORMATDESCRIPTOR pfd;
+ for (int pfi = 1; pfi <= pfiMax; pfi++) {
+ DescribePixelFormat(display_dc, pfi, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+ if ((pfd.bReserved & 0x0f) && (pfd.dwFlags & PFD_SUPPORT_OPENGL)) {
+ // This format has overlays/underlays
+ LAYERPLANEDESCRIPTOR lpd;
+ wglDescribeLayerPlane(display_dc, pfi, 1,
+ sizeof(LAYERPLANEDESCRIPTOR), &lpd);
+ if (lpd.dwFlags & LPD_SUPPORT_OPENGL) {
+ hasOl = true;
+ break;
+ }
+ }
+ }
+ ReleaseDC(0, display_dc);
+ }
+ return hasOl;
+}
+
+
+/*****************************************************************************
+ QGLContext Win32/WGL-specific code
+ *****************************************************************************/
+
+static uchar qgl_rgb_palette_comp(int idx, uint nbits, uint shift)
+{
+ const uchar map_3_to_8[8] = {
+ 0, 0111>>1, 0222>>1, 0333>>1, 0444>>1, 0555>>1, 0666>>1, 0377
+ };
+ const uchar map_2_to_8[4] = {
+ 0, 0x55, 0xaa, 0xff
+ };
+ const uchar map_1_to_8[2] = {
+ 0, 255
+ };
+
+ uchar val = (uchar) (idx >> shift);
+ uchar res = 0;
+ switch (nbits) {
+ case 1:
+ val &= 0x1;
+ res = map_1_to_8[val];
+ break;
+ case 2:
+ val &= 0x3;
+ res = map_2_to_8[val];
+ break;
+ case 3:
+ val &= 0x7;
+ res = map_3_to_8[val];
+ break;
+ default:
+ res = 0;
+ }
+ return res;
+}
+
+
+static QRgb* qgl_create_rgb_palette(const PIXELFORMATDESCRIPTOR* pfd)
+{
+ if ((pfd->iPixelType != PFD_TYPE_RGBA) ||
+ !(pfd->dwFlags & PFD_NEED_PALETTE) ||
+ (pfd->cColorBits != 8))
+ return 0;
+ int numEntries = 1 << pfd->cColorBits;
+ QRgb* pal = new QRgb[numEntries];
+ for (int i = 0; i < numEntries; i++) {
+ int r = qgl_rgb_palette_comp(i, pfd->cRedBits, pfd->cRedShift);
+ int g = qgl_rgb_palette_comp(i, pfd->cGreenBits, pfd->cGreenShift);
+ int b = qgl_rgb_palette_comp(i, pfd->cBlueBits, pfd->cBlueShift);
+ pal[i] = qRgb(r, g, b);
+ }
+
+ const int syscol_indices[12] = {
+ 3, 24, 27, 64, 67, 88, 173, 181, 236, 247, 164, 91
+ };
+
+ const uint syscols[20] = {
+ 0x000000, 0x800000, 0x008000, 0x808000, 0x000080, 0x800080,
+ 0x008080, 0xc0c0c0, 0xc0dcc0, 0xa6caf0, 0xfffbf0, 0xa0a0a4,
+ 0x808080, 0xff0000, 0x00ff00, 0xffff00, 0x0000ff, 0xff00ff,
+ 0x00ffff, 0xffffff
+ }; // colors #1 - #12 are not present in pal; gets added below
+
+ if ((pfd->cColorBits == 8) &&
+ (pfd->cRedBits == 3) && (pfd->cRedShift == 0) &&
+ (pfd->cGreenBits == 3) && (pfd->cGreenShift == 3) &&
+ (pfd->cBlueBits == 2) && (pfd->cBlueShift == 6)) {
+ for (int j = 0 ; j < 12 ; j++)
+ pal[syscol_indices[j]] = QRgb(syscols[j+1]);
+ }
+
+ return pal;
+}
+
+static QGLFormat pfdToQGLFormat(const PIXELFORMATDESCRIPTOR* pfd)
+{
+ QGLFormat fmt;
+ fmt.setDoubleBuffer(pfd->dwFlags & PFD_DOUBLEBUFFER);
+ fmt.setDepth(pfd->cDepthBits);
+ if (fmt.depth())
+ fmt.setDepthBufferSize(pfd->cDepthBits);
+ fmt.setRgba(pfd->iPixelType == PFD_TYPE_RGBA);
+ fmt.setRedBufferSize(pfd->cRedBits);
+ fmt.setGreenBufferSize(pfd->cGreenBits);
+ fmt.setBlueBufferSize(pfd->cBlueBits);
+ fmt.setAlpha(pfd->cAlphaBits);
+ if (fmt.alpha())
+ fmt.setAlphaBufferSize(pfd->cAlphaBits);
+ fmt.setAccum(pfd->cAccumBits);
+ if (fmt.accum())
+ fmt.setAccumBufferSize(pfd->cAccumRedBits);
+ fmt.setStencil(pfd->cStencilBits);
+ if (fmt.stencil())
+ fmt.setStencilBufferSize(pfd->cStencilBits);
+ fmt.setStereo(pfd->dwFlags & PFD_STEREO);
+ fmt.setDirectRendering((pfd->dwFlags & PFD_GENERIC_ACCELERATED) ||
+ !(pfd->dwFlags & PFD_GENERIC_FORMAT));
+ fmt.setOverlay((pfd->bReserved & 0x0f) != 0);
+ return fmt;
+}
+
+/*
+ NB! requires a current GL context to work
+*/
+QGLFormat pfiToQGLFormat(HDC hdc, int pfi)
+{
+ QGLFormat fmt;
+ QVarLengthArray<int> iAttributes(40);
+ QVarLengthArray<int> iValues(40);
+ int i = 0;
+ bool has_sample_buffers = QGLExtensions::glExtensions & QGLExtensions::SampleBuffers;
+
+ iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB; // 0
+ iAttributes[i++] = WGL_DEPTH_BITS_ARB; // 1
+ iAttributes[i++] = WGL_PIXEL_TYPE_ARB; // 2
+ iAttributes[i++] = WGL_RED_BITS_ARB; // 3
+ iAttributes[i++] = WGL_GREEN_BITS_ARB; // 4
+ iAttributes[i++] = WGL_BLUE_BITS_ARB; // 5
+ iAttributes[i++] = WGL_ALPHA_BITS_ARB; // 6
+ iAttributes[i++] = WGL_ACCUM_BITS_ARB; // 7
+ iAttributes[i++] = WGL_STENCIL_BITS_ARB; // 8
+ iAttributes[i++] = WGL_STEREO_ARB; // 9
+ iAttributes[i++] = WGL_ACCELERATION_ARB; // 10
+ iAttributes[i++] = WGL_NUMBER_OVERLAYS_ARB; // 11
+ if (has_sample_buffers) {
+ iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB; // 12
+ iAttributes[i++] = WGL_SAMPLES_ARB; // 13
+ }
+ PFNWGLGETPIXELFORMATATTRIBIVARB wglGetPixelFormatAttribivARB =
+ (PFNWGLGETPIXELFORMATATTRIBIVARB) wglGetProcAddress("wglGetPixelFormatAttribivARB");
+
+ if (wglGetPixelFormatAttribivARB
+ && wglGetPixelFormatAttribivARB(hdc, pfi, 0, i,
+ iAttributes.constData(),
+ iValues.data()))
+ {
+ fmt.setDoubleBuffer(iValues[0]);
+ fmt.setDepth(iValues[1]);
+ if (fmt.depth())
+ fmt.setDepthBufferSize(iValues[1]);
+ fmt.setRgba(iValues[2] == WGL_TYPE_RGBA_ARB);
+ fmt.setRedBufferSize(iValues[3]);
+ fmt.setGreenBufferSize(iValues[4]);
+ fmt.setBlueBufferSize(iValues[5]);
+ fmt.setAlpha(iValues[6]);
+ if (fmt.alpha())
+ fmt.setAlphaBufferSize(iValues[6]);
+ fmt.setAccum(iValues[7]);
+ if (fmt.accum())
+ fmt.setAccumBufferSize(iValues[7]);
+ fmt.setStencil(iValues[8]);
+ if (fmt.stencil())
+ fmt.setStencilBufferSize(iValues[8]);
+ fmt.setStereo(iValues[9]);
+ if (iValues[10] == WGL_FULL_ACCELERATION_ARB)
+ fmt.setDirectRendering(true);
+ else
+ fmt.setDirectRendering(false);
+ fmt.setOverlay(iValues[11]);
+ if (has_sample_buffers) {
+ fmt.setSampleBuffers(iValues[12]);
+ if (fmt.sampleBuffers())
+ fmt.setSamples(iValues[13]);
+ }
+ }
+#if 0
+ qDebug() << "values for pfi:" << pfi;
+ qDebug() << "doublebuffer 0:" << fmt.doubleBuffer();
+ qDebug() << "depthbuffer 1:" << fmt.depthBufferSize();
+ qDebug() << "rgba 2:" << fmt.rgba();
+ qDebug() << "red size 3:" << fmt.redBufferSize();
+ qDebug() << "green size 4:" << fmt.greenBufferSize();
+ qDebug() << "blue size 5:" << fmt.blueBufferSize();
+ qDebug() << "alpha size 6:" << fmt.alphaBufferSize();
+ qDebug() << "accum size 7:" << fmt.accumBufferSize();
+ qDebug() << "stencil size 8:" << fmt.stencilBufferSize();
+ qDebug() << "stereo 9:" << fmt.stereo();
+ qDebug() << "direct 10:" << fmt.directRendering();
+ qDebug() << "has overlays 11:" << fmt.hasOverlay();
+ qDebug() << "sample buff 12:" << fmt.sampleBuffers();
+ qDebug() << "num samples 13:" << fmt.samples();
+#endif
+ return fmt;
+}
+
+
+/*
+ Creates a temporary GL context and makes it current
+ - cleans up when the object is destructed.
+*/
+
+Q_GUI_EXPORT const QString qt_getRegisteredWndClass();
+
+class QGLTempContext
+{
+public:
+ QGLTempContext(bool directRendering, QWidget *parent = 0)
+ {
+ QString windowClassName = qt_getRegisteredWndClass();
+ if (parent && !parent->internalWinId())
+ parent = parent->nativeParentWidget();
+
+ dmy_id = CreateWindow((const wchar_t *)windowClassName.utf16(),
+ 0, 0, 0, 0, 1, 1,
+ parent ? parent->winId() : 0, 0, qWinAppInst(), 0);
+
+ dmy_pdc = GetDC(dmy_id);
+ PIXELFORMATDESCRIPTOR dmy_pfd;
+ memset(&dmy_pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
+ dmy_pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
+ dmy_pfd.nVersion = 1;
+ dmy_pfd.dwFlags = PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW;
+ dmy_pfd.iPixelType = PFD_TYPE_RGBA;
+ if (!directRendering)
+ dmy_pfd.dwFlags |= PFD_GENERIC_FORMAT;
+
+ int dmy_pf = ChoosePixelFormat(dmy_pdc, &dmy_pfd);
+ SetPixelFormat(dmy_pdc, dmy_pf, &dmy_pfd);
+ dmy_rc = wglCreateContext(dmy_pdc);
+ old_dc = wglGetCurrentDC();
+ old_context = wglGetCurrentContext();
+ wglMakeCurrent(dmy_pdc, dmy_rc);
+ }
+
+ ~QGLTempContext() {
+ wglMakeCurrent(dmy_pdc, 0);
+ wglDeleteContext(dmy_rc);
+ ReleaseDC(dmy_id, dmy_pdc);
+ DestroyWindow(dmy_id);
+ if (old_dc && old_context)
+ wglMakeCurrent(old_dc, old_context);
+ }
+
+ HDC dmy_pdc;
+ HGLRC dmy_rc;
+ HDC old_dc;
+ HGLRC old_context;
+ WId dmy_id;
+};
+
+bool QGLContext::chooseContext(const QGLContext* shareContext)
+{
+ Q_D(QGLContext);
+ // workaround for matrox driver:
+ // make a cheap call to opengl to force loading of DLL
+ if (!opengl32dll) {
+ GLint params;
+ glGetIntegerv(GL_DEPTH_BITS, ¶ms);
+ opengl32dll = true;
+ }
+
+ bool result = true;
+ HDC myDc;
+ QWidget *widget = 0;
+
+ if (deviceIsPixmap()) {
+ if (d->glFormat.plane())
+ return false; // Pixmaps can't have overlay
+ d->win = 0;
+ HDC display_dc = GetDC(0);
+ myDc = d->hbitmap_hdc = CreateCompatibleDC(display_dc);
+ QPixmap *px = static_cast<QPixmap *>(d->paintDevice);
+
+ BITMAPINFO bmi;
+ memset(&bmi, 0, sizeof(bmi));
+ bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+ bmi.bmiHeader.biWidth = px->width();
+ bmi.bmiHeader.biHeight = px->height();
+ bmi.bmiHeader.biPlanes = 1;
+ bmi.bmiHeader.biBitCount = 32;
+ bmi.bmiHeader.biCompression = BI_RGB;
+ d->hbitmap = CreateDIBSection(display_dc, &bmi, DIB_RGB_COLORS, 0, 0, 0);
+ SelectObject(myDc, d->hbitmap);
+ ReleaseDC(0, display_dc);
+ } else {
+ widget = static_cast<QWidget *>(d->paintDevice);
+ d->win = widget->winId();
+ myDc = GetDC(d->win);
+ }
+
+ // NB! the QGLTempContext object is needed for the
+ // wglGetProcAddress() calls to succeed and are absolutely
+ // necessary - don't remove!
+ QGLTempContext tmp_ctx(d->glFormat.directRendering(), widget);
+
+ if (!myDc) {
+ qWarning("QGLContext::chooseContext(): Paint device cannot be null");
+ result = false;
+ goto end;
+ }
+
+ if (d->glFormat.plane()) {
+ d->pixelFormatId = ((QGLWidget*)d->paintDevice)->context()->d_func()->pixelFormatId;
+ if (!d->pixelFormatId) { // I.e. the glwidget is invalid
+ qWarning("QGLContext::chooseContext(): Cannot create overlay context for invalid widget");
+ result = false;
+ goto end;
+ }
+
+ d->rc = wglCreateLayerContext(myDc, d->glFormat.plane());
+ if (!d->rc) {
+ qwglError("QGLContext::chooseContext()", "CreateLayerContext");
+ result = false;
+ goto end;
+ }
+
+ LAYERPLANEDESCRIPTOR lpfd;
+ wglDescribeLayerPlane(myDc, d->pixelFormatId, d->glFormat.plane(), sizeof(LAYERPLANEDESCRIPTOR), &lpfd);
+ d->glFormat.setDoubleBuffer(lpfd.dwFlags & LPD_DOUBLEBUFFER);
+ d->glFormat.setDepth(lpfd.cDepthBits);
+ d->glFormat.setRgba(lpfd.iPixelType == PFD_TYPE_RGBA);
+ if (d->glFormat.rgba()) {
+ if (d->glFormat.redBufferSize() != -1)
+ d->glFormat.setRedBufferSize(lpfd.cRedBits);
+ if (d->glFormat.greenBufferSize() != -1)
+ d->glFormat.setGreenBufferSize(lpfd.cGreenBits);
+ if (d->glFormat.blueBufferSize() != -1)
+ d->glFormat.setBlueBufferSize(lpfd.cBlueBits);
+ }
+ d->glFormat.setAlpha(lpfd.cAlphaBits);
+ d->glFormat.setAccum(lpfd.cAccumBits);
+ d->glFormat.setStencil(lpfd.cStencilBits);
+ d->glFormat.setStereo(lpfd.dwFlags & LPD_STEREO);
+ d->glFormat.setDirectRendering(false);
+ if (d->glFormat.depth())
+ d->glFormat.setDepthBufferSize(lpfd.cDepthBits);
+ if (d->glFormat.alpha())
+ d->glFormat.setAlphaBufferSize(lpfd.cAlphaBits);
+ if (d->glFormat.accum())
+ d->glFormat.setAccumBufferSize(lpfd.cAccumRedBits);
+ if (d->glFormat.stencil())
+ d->glFormat.setStencilBufferSize(lpfd.cStencilBits);
+
+ if (d->glFormat.rgba()) {
+ if (lpfd.dwFlags & LPD_TRANSPARENT)
+ d->transpColor = QColor(lpfd.crTransparent & 0xff,
+ (lpfd.crTransparent >> 8) & 0xff,
+ (lpfd.crTransparent >> 16) & 0xff);
+ else
+ d->transpColor = QColor(0, 0, 0);
+ }
+ else {
+ if (lpfd.dwFlags & LPD_TRANSPARENT)
+ d->transpColor = QColor(qRgb(1, 2, 3));//, lpfd.crTransparent);
+ else
+ d->transpColor = QColor(qRgb(1, 2, 3));//, 0);
+
+ d->cmap = new QGLCmap(1 << lpfd.cColorBits);
+ d->cmap->setEntry(lpfd.crTransparent, qRgb(1, 2, 3));//, QGLCmap::Reserved);
+ }
+
+ if (shareContext && shareContext->isValid()) {
+ QGLContext *share = const_cast<QGLContext *>(shareContext);
+ d->sharing = (wglShareLists(shareContext->d_func()->rc, d->rc) != 0);
+ share->d_func()->sharing = d->sharing;
+ }
+
+ goto end;
+ }
+ {
+ PIXELFORMATDESCRIPTOR pfd;
+ PIXELFORMATDESCRIPTOR realPfd;
+ d->pixelFormatId = choosePixelFormat(&pfd, myDc);
+ if (d->pixelFormatId == 0) {
+ qwglError("QGLContext::chooseContext()", "ChoosePixelFormat");
+ result = false;
+ goto end;
+ }
+
+ bool overlayRequested = d->glFormat.hasOverlay();
+ DescribePixelFormat(myDc, d->pixelFormatId, sizeof(PIXELFORMATDESCRIPTOR), &realPfd);
+
+ if (!deviceIsPixmap() && wglGetProcAddress("wglGetPixelFormatAttribivARB"))
+ d->glFormat = pfiToQGLFormat(myDc, d->pixelFormatId);
+ else
+ d->glFormat = pfdToQGLFormat(&realPfd);
+
+ d->glFormat.setOverlay(d->glFormat.hasOverlay() && overlayRequested);
+
+ if (deviceIsPixmap() && !(realPfd.dwFlags & PFD_DRAW_TO_BITMAP)) {
+ qWarning("QGLContext::chooseContext(): Failed to get pixmap rendering context.");
+ result = false;
+ goto end;
+ }
+
+ if (deviceIsPixmap() &&
+ (((QPixmap*)d->paintDevice)->depth() != realPfd.cColorBits)) {
+ qWarning("QGLContext::chooseContext(): Failed to get pixmap rendering context of suitable depth.");
+ result = false;
+ goto end;
+ }
+
+ if (!SetPixelFormat(myDc, d->pixelFormatId, &realPfd)) {
+ qwglError("QGLContext::chooseContext()", "SetPixelFormat");
+ result = false;
+ goto end;
+ }
+
+ if (!(d->rc = wglCreateLayerContext(myDc, 0))) {
+ qwglError("QGLContext::chooseContext()", "wglCreateContext");
+ result = false;
+ goto end;
+ }
+
+ if (shareContext && shareContext->isValid()) {
+ d->sharing = (wglShareLists(shareContext->d_func()->rc, d->rc) != 0);
+ const_cast<QGLContext *>(shareContext)->d_func()->sharing = d->sharing;
+ }
+
+ if(!deviceIsPixmap()) {
+ QRgb* pal = qgl_create_rgb_palette(&realPfd);
+ if (pal) {
+ QGLColormap cmap;
+ cmap.setEntries(256, pal);
+ ((QGLWidget*)d->paintDevice)->setColormap(cmap);
+ delete[] pal;
+ }
+ }
+ }
+
+end:
+ // vblanking
+ wglMakeCurrent(myDc, d->rc);
+ typedef BOOL (APIENTRYP PFNWGLSWAPINTERVALEXT) (int interval);
+ typedef int (APIENTRYP PFNWGLGETSWAPINTERVALEXT) (void);
+ PFNWGLSWAPINTERVALEXT wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXT) wglGetProcAddress("wglSwapIntervalEXT");
+ PFNWGLGETSWAPINTERVALEXT wglGetSwapIntervalEXT = (PFNWGLGETSWAPINTERVALEXT) wglGetProcAddress("wglGetSwapIntervalEXT");
+ if (wglSwapIntervalEXT && wglGetSwapIntervalEXT) {
+ if (d->reqFormat.swapInterval() != -1)
+ wglSwapIntervalEXT(d->reqFormat.swapInterval());
+ d->glFormat.setSwapInterval(wglGetSwapIntervalEXT());
+ }
+
+ if (d->win)
+ ReleaseDC(d->win, myDc);
+ return result;
+}
+
+
+
+static bool qLogEq(bool a, bool b)
+{
+ return (((!a) && (!b)) || (a && b));
+}
+
+/*
+ See qgl.cpp for qdoc comment.
+ */
+int QGLContext::choosePixelFormat(void* dummyPfd, HDC pdc)
+{
+ Q_D(QGLContext);
+ // workaround for matrox driver:
+ // make a cheap call to opengl to force loading of DLL
+ if (!opengl32dll) {
+ GLint params;
+ glGetIntegerv(GL_DEPTH_BITS, ¶ms);
+ opengl32dll = true;
+ }
+
+ PFNWGLCHOOSEPIXELFORMATARB wglChoosePixelFormatARB =
+ (PFNWGLCHOOSEPIXELFORMATARB) wglGetProcAddress("wglChoosePixelFormatARB");
+ int chosenPfi = 0;
+ if (!deviceIsPixmap() && wglChoosePixelFormatARB) {
+ bool valid;
+ int pixelFormat = 0;
+ uint numFormats = 0;
+ QVarLengthArray<int> iAttributes(40);
+ int i = 0;
+ iAttributes[i++] = WGL_ACCELERATION_ARB;
+ if (d->glFormat.directRendering())
+ iAttributes[i++] = WGL_FULL_ACCELERATION_ARB;
+ else
+ iAttributes[i++] = WGL_NO_ACCELERATION_ARB;
+ iAttributes[i++] = WGL_SUPPORT_OPENGL_ARB;
+ iAttributes[i++] = TRUE;
+ iAttributes[i++] = WGL_DRAW_TO_WINDOW_ARB;
+ iAttributes[i++] = TRUE;
+ iAttributes[i++] = WGL_COLOR_BITS_ARB;
+ iAttributes[i++] = 32;
+ iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB;
+ iAttributes[i++] = d->glFormat.doubleBuffer();
+ if (d->glFormat.stereo()) {
+ iAttributes[i++] = WGL_STEREO_ARB;
+ iAttributes[i++] = TRUE;
+ }
+ if (d->glFormat.depth()) {
+ iAttributes[i++] = WGL_DEPTH_BITS_ARB;
+ iAttributes[i++] = d->glFormat.depthBufferSize() == -1 ? 24 : d->glFormat.depthBufferSize();
+ }
+ iAttributes[i++] = WGL_PIXEL_TYPE_ARB;
+ if (d->glFormat.rgba()) {
+ iAttributes[i++] = WGL_TYPE_RGBA_ARB;
+ if (d->glFormat.redBufferSize() != -1) {
+ iAttributes[i++] = WGL_RED_BITS_ARB;
+ iAttributes[i++] = d->glFormat.redBufferSize();
+ }
+ if (d->glFormat.greenBufferSize() != -1) {
+ iAttributes[i++] = WGL_GREEN_BITS_ARB;
+ iAttributes[i++] = d->glFormat.greenBufferSize();
+ }
+ if (d->glFormat.blueBufferSize() != -1) {
+ iAttributes[i++] = WGL_BLUE_BITS_ARB;
+ iAttributes[i++] = d->glFormat.blueBufferSize();
+ }
+ } else {
+ iAttributes[i++] = WGL_TYPE_COLORINDEX_ARB;
+ }
+ if (d->glFormat.alpha()) {
+ iAttributes[i++] = WGL_ALPHA_BITS_ARB;
+ iAttributes[i++] = d->glFormat.alphaBufferSize() == -1 ? 8 : d->glFormat.alphaBufferSize();
+ }
+ if (d->glFormat.accum()) {
+ iAttributes[i++] = WGL_ACCUM_BITS_ARB;
+ iAttributes[i++] = d->glFormat.accumBufferSize() == -1 ? 16 : d->glFormat.accumBufferSize();
+ }
+ if (d->glFormat.stencil()) {
+ iAttributes[i++] = WGL_STENCIL_BITS_ARB;
+ iAttributes[i++] = d->glFormat.stencilBufferSize() == -1 ? 8 : d->glFormat.stencilBufferSize();
+ }
+ if (d->glFormat.hasOverlay()) {
+ iAttributes[i++] = WGL_NUMBER_OVERLAYS_ARB;
+ iAttributes[i++] = 1;
+ }
+ int si = 0;
+ bool trySampleBuffers = QGLExtensions::glExtensions & QGLExtensions::SampleBuffers;
+ if (trySampleBuffers && d->glFormat.sampleBuffers()) {
+ iAttributes[i++] = WGL_SAMPLE_BUFFERS_ARB;
+ iAttributes[i++] = TRUE;
+ iAttributes[i++] = WGL_SAMPLES_ARB;
+ si = i;
+ iAttributes[i++] = d->glFormat.samples() == -1 ? 4 : d->glFormat.samples();
+ }
+ iAttributes[i] = 0;
+
+ do {
+ valid = wglChoosePixelFormatARB(pdc, iAttributes.constData(), 0, 1,
+ &pixelFormat, &numFormats);
+ if (trySampleBuffers && (!valid || numFormats < 1) && d->glFormat.sampleBuffers())
+ iAttributes[si] /= 2; // try different no. samples - we aim for the best one
+ else
+ break;
+ } while ((!valid || numFormats < 1) && iAttributes[si] > 1);
+ chosenPfi = pixelFormat;
+ }
+
+ if (!chosenPfi) { // fallback if wglChoosePixelFormatARB() failed
+ int pmDepth = deviceIsPixmap() ? ((QPixmap*)d->paintDevice)->depth() : 0;
+ PIXELFORMATDESCRIPTOR* p = (PIXELFORMATDESCRIPTOR*)dummyPfd;
+ memset(p, 0, sizeof(PIXELFORMATDESCRIPTOR));
+ p->nSize = sizeof(PIXELFORMATDESCRIPTOR);
+ p->nVersion = 1;
+ p->dwFlags = PFD_SUPPORT_OPENGL;
+ if (deviceIsPixmap())
+ p->dwFlags |= PFD_DRAW_TO_BITMAP;
+ else
+ p->dwFlags |= PFD_DRAW_TO_WINDOW;
+ if (!d->glFormat.directRendering())
+ p->dwFlags |= PFD_GENERIC_FORMAT;
+ if (d->glFormat.doubleBuffer() && !deviceIsPixmap())
+ p->dwFlags |= PFD_DOUBLEBUFFER;
+ if (d->glFormat.stereo())
+ p->dwFlags |= PFD_STEREO;
+ if (d->glFormat.depth())
+ p->cDepthBits = d->glFormat.depthBufferSize() == -1 ? 32 : d->glFormat.depthBufferSize();
+ else
+ p->dwFlags |= PFD_DEPTH_DONTCARE;
+ if (d->glFormat.rgba()) {
+ p->iPixelType = PFD_TYPE_RGBA;
+ if (d->glFormat.redBufferSize() != -1)
+ p->cRedBits = d->glFormat.redBufferSize();
+ if (d->glFormat.greenBufferSize() != -1)
+ p->cGreenBits = d->glFormat.greenBufferSize();
+ if (d->glFormat.blueBufferSize() != -1)
+ p->cBlueBits = d->glFormat.blueBufferSize();
+ if (deviceIsPixmap())
+ p->cColorBits = pmDepth;
+ else
+ p->cColorBits = 32;
+ } else {
+ p->iPixelType = PFD_TYPE_COLORINDEX;
+ p->cColorBits = 8;
+ }
+ if (d->glFormat.alpha())
+ p->cAlphaBits = d->glFormat.alphaBufferSize() == -1 ? 8 : d->glFormat.alphaBufferSize();
+ if (d->glFormat.accum()) {
+ p->cAccumRedBits = p->cAccumGreenBits = p->cAccumBlueBits = p->cAccumAlphaBits =
+ d->glFormat.accumBufferSize() == -1 ? 16 : d->glFormat.accumBufferSize();
+ }
+ if (d->glFormat.stencil())
+ p->cStencilBits = d->glFormat.stencilBufferSize() == -1 ? 8 : d->glFormat.stencilBufferSize();
+ p->iLayerType = PFD_MAIN_PLANE;
+ chosenPfi = ChoosePixelFormat(pdc, p);
+
+ if (!chosenPfi)
+ qErrnoWarning("QGLContext: ChoosePixelFormat failed");
+
+ // Since the GDI function ChoosePixelFormat() does not handle
+ // overlay and direct-rendering requests, we must roll our own here
+
+ bool doSearch = chosenPfi <= 0;
+ PIXELFORMATDESCRIPTOR pfd;
+ QGLFormat fmt;
+ if (!doSearch) {
+ DescribePixelFormat(pdc, chosenPfi, sizeof(PIXELFORMATDESCRIPTOR),
+ &pfd);
+ fmt = pfdToQGLFormat(&pfd);
+ if (d->glFormat.hasOverlay() && !fmt.hasOverlay())
+ doSearch = true;
+ else if (!qLogEq(d->glFormat.directRendering(), fmt.directRendering()))
+ doSearch = true;
+ else if (deviceIsPixmap() && (!(pfd.dwFlags & PFD_DRAW_TO_BITMAP) ||
+ pfd.cColorBits != pmDepth))
+ doSearch = true;
+ else if (!deviceIsPixmap() && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))
+ doSearch = true;
+ else if (!qLogEq(d->glFormat.rgba(), fmt.rgba()))
+ doSearch = true;
+ }
+
+ if (doSearch) {
+ int pfiMax = DescribePixelFormat(pdc, 0, 0, NULL);
+ int bestScore = -1;
+ int bestPfi = -1;
+ for (int pfi = 1; pfi <= pfiMax; pfi++) {
+ DescribePixelFormat(pdc, pfi, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
+ if (!(pfd.dwFlags & PFD_SUPPORT_OPENGL))
+ continue;
+ if (deviceIsPixmap() && (!(pfd.dwFlags & PFD_DRAW_TO_BITMAP) ||
+ pfd.cColorBits != pmDepth))
+ continue;
+ if (!deviceIsPixmap() && !(pfd.dwFlags & PFD_DRAW_TO_WINDOW))
+ continue;
+
+ fmt = pfdToQGLFormat(&pfd);
+ if (d->glFormat.hasOverlay() && !fmt.hasOverlay())
+ continue;
+
+ int score = pfd.cColorBits;
+ if (qLogEq(d->glFormat.depth(), fmt.depth()))
+ score += pfd.cDepthBits;
+ if (qLogEq(d->glFormat.alpha(), fmt.alpha()))
+ score += pfd.cAlphaBits;
+ if (qLogEq(d->glFormat.accum(), fmt.accum()))
+ score += pfd.cAccumBits;
+ if (qLogEq(d->glFormat.stencil(), fmt.stencil()))
+ score += pfd.cStencilBits;
+ if (qLogEq(d->glFormat.doubleBuffer(), fmt.doubleBuffer()))
+ score += 1000;
+ if (qLogEq(d->glFormat.stereo(), fmt.stereo()))
+ score += 2000;
+ if (qLogEq(d->glFormat.directRendering(), fmt.directRendering()))
+ score += 4000;
+ if (qLogEq(d->glFormat.rgba(), fmt.rgba()))
+ score += 8000;
+ if (score > bestScore) {
+ bestScore = score;
+ bestPfi = pfi;
+ }
+ }
+
+ if (bestPfi > 0)
+ chosenPfi = bestPfi;
+ }
+ }
+ return chosenPfi;
+}
+
+
+
+void QGLContext::reset()
+{
+ Q_D(QGLContext);
+ // workaround for matrox driver:
+ // make a cheap call to opengl to force loading of DLL
+ if (!opengl32dll) {
+ GLint params;
+ glGetIntegerv(GL_DEPTH_BITS, ¶ms);
+ opengl32dll = true;
+ }
+
+ if (!d->valid)
+ return;
+ d->cleanup();
+ doneCurrent();
+ if (d->rc)
+ wglDeleteContext(d->rc);
+ d->rc = 0;
+ if (d->win && d->dc)
+ ReleaseDC(d->win, d->dc);
+ if (deviceIsPixmap()) {
+ DeleteDC(d->hbitmap_hdc);
+ DeleteObject(d->hbitmap);
+ d->hbitmap_hdc = 0;
+ d->hbitmap = 0;
+ }
+ d->dc = 0;
+ d->win = 0;
+ d->pixelFormatId = 0;
+ d->sharing = false;
+ d->valid = false;
+ d->transpColor = QColor();
+ delete d->cmap;
+ d->cmap = 0;
+ d->initDone = false;
+ qgl_share_reg()->removeShare(this);
+}
+
+//
+// NOTE: In a multi-threaded environment, each thread has a current
+// context. If we want to make this code thread-safe, we probably
+// have to use TLS (thread local storage) for keeping current contexts.
+//
+
+void QGLContext::makeCurrent()
+{
+ Q_D(QGLContext);
+ if (d->rc == wglGetCurrentContext() || !d->valid) // already current
+ return;
+ if (d->win) {
+ d->dc = GetDC(d->win);
+ if (!d->dc) {
+ qwglError("QGLContext::makeCurrent()", "GetDC()");
+ return;
+ }
+ } else if (deviceIsPixmap()) {
+ d->dc = d->hbitmap_hdc;
+ }
+
+ HPALETTE hpal = QColormap::hPal();
+ if (hpal) {
+ SelectPalette(d->dc, hpal, FALSE);
+ RealizePalette(d->dc);
+ }
+ if (d->glFormat.plane()) {
+ wglRealizeLayerPalette(d->dc, d->glFormat.plane(), TRUE);
+ }
+
+ if (wglMakeCurrent(d->dc, d->rc)) {
+ QGLContextPrivate::setCurrentContext(this);
+ } else {
+ qwglError("QGLContext::makeCurrent()", "wglMakeCurrent");
+ }
+}
+
+
+void QGLContext::doneCurrent()
+{
+ Q_D(QGLContext);
+ wglMakeCurrent(0, 0);
+ QGLContextPrivate::setCurrentContext(0);
+ if (deviceIsPixmap() && d->hbitmap) {
+ QPixmap *pm = static_cast<QPixmap *>(d->paintDevice);
+ *pm = QPixmap::fromWinHBITMAP(d->hbitmap);
+ }
+ if (d->win && d->dc) {
+ ReleaseDC(d->win, d->dc);
+ d->dc = 0;
+ }
+}
+
+void QGLContext::swapBuffers() const
+{
+ Q_D(const QGLContext);
+ if (d->dc && d->glFormat.doubleBuffer() && !deviceIsPixmap()) {
+ if (d->glFormat.plane())
+ wglSwapLayerBuffers(d->dc, WGL_SWAP_OVERLAY1);
+ else {
+ if (d->glFormat.hasOverlay())
+ wglSwapLayerBuffers(d->dc, WGL_SWAP_MAIN_PLANE);
+ else
+ SwapBuffers(d->dc);
+ }
+ }
+}
+
+
+QColor QGLContext::overlayTransparentColor() const
+{
+ return d_func()->transpColor;
+}
+
+
+uint QGLContext::colorIndex(const QColor& c) const
+{
+ Q_D(const QGLContext);
+ if (!isValid())
+ return 0;
+ if (d->cmap) {
+ int idx = d->cmap->find(c.rgb());
+ if (idx >= 0)
+ return idx;
+ if (d->dc && d->glFormat.plane()) {
+ idx = d->cmap->allocate(c.rgb());
+ if (idx >= 0) {
+ COLORREF r = RGB(qRed(c.rgb()),qGreen(c.rgb()),qBlue(c.rgb()));
+ wglSetLayerPaletteEntries(d->dc, d->glFormat.plane(), idx, 1, &r);
+ wglRealizeLayerPalette(d->dc, d->glFormat.plane(), TRUE);
+ return idx;
+ }
+ }
+ return d->cmap->findNearest(c.rgb());
+ }
+ QColormap cmap = QColormap::instance();
+ return cmap.pixel(c) & 0x00ffffff; // Assumes standard palette
+}
+
+void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase)
+{
+ if (!isValid())
+ return;
+
+ HDC display_dc = GetDC(0);
+ HDC tmp_dc = CreateCompatibleDC(display_dc);
+ HGDIOBJ old_font = SelectObject(tmp_dc, fnt.handle());
+
+ ReleaseDC(0, display_dc);
+
+ if (!wglUseFontBitmaps(tmp_dc, 0, 256, listBase))
+ qWarning("QGLContext::generateFontDisplayLists: Could not generate display lists for font '%s'", fnt.family().toLatin1().data());
+
+ SelectObject(tmp_dc, old_font);
+ DeleteDC(tmp_dc);
+}
+
+void *QGLContext::getProcAddress(const QString &proc) const
+{
+ return (void *)wglGetProcAddress(proc.toLatin1());
+}
+
+/*****************************************************************************
+ QGLWidget Win32/WGL-specific code
+ *****************************************************************************/
+
+void QGLWidgetPrivate::init(QGLContext *ctx, const QGLWidget* shareWidget)
+{
+ Q_Q(QGLWidget);
+ olcx = 0;
+ initContext(ctx, shareWidget);
+
+ if (q->isValid() && q->context()->format().hasOverlay()) {
+ olcx = new QGLContext(QGLFormat::defaultOverlayFormat(), q);
+ if (!olcx->create(shareWidget ? shareWidget->overlayContext() : 0)) {
+ delete olcx;
+ olcx = 0;
+ glcx->d_func()->glFormat.setOverlay(false);
+ }
+ } else {
+ olcx = 0;
+ }
+}
+
+/*\internal
+ Store color values in the given colormap.
+*/
+static void qStoreColors(HPALETTE cmap, const QGLColormap & cols)
+{
+ QRgb color;
+ PALETTEENTRY pe;
+
+ for (int i = 0; i < cols.size(); i++) {
+ color = cols.entryRgb(i);
+ pe.peRed = qRed(color);
+ pe.peGreen = qGreen(color);
+ pe.peBlue = qBlue(color);
+ pe.peFlags = 0;
+
+ SetPaletteEntries(cmap, i, 1, &pe);
+ }
+}
+
+void QGLWidgetPrivate::updateColormap()
+{
+ Q_Q(QGLWidget);
+ if (!cmap.handle())
+ return;
+ HDC hdc = GetDC(q->winId());
+ SelectPalette(hdc, (HPALETTE) cmap.handle(), TRUE);
+ qStoreColors((HPALETTE) cmap.handle(), cmap);
+ RealizePalette(hdc);
+ ReleaseDC(q->winId(), hdc);
+}
+
+void QGLWidget::setMouseTracking(bool enable)
+{
+ QWidget::setMouseTracking(enable);
+}
+
+
+void QGLWidget::resizeEvent(QResizeEvent *)
+{
+ Q_D(QGLWidget);
+ if (!isValid())
+ return;
+ makeCurrent();
+ if (!d->glcx->initialized())
+ glInit();
+ resizeGL(width(), height());
+ if (d->olcx) {
+ makeOverlayCurrent();
+ resizeOverlayGL(width(), height());
+ }
+}
+
+
+const QGLContext* QGLWidget::overlayContext() const
+{
+ return d_func()->olcx;
+}
+
+
+void QGLWidget::makeOverlayCurrent()
+{
+ Q_D(QGLWidget);
+ if (d->olcx) {
+ d->olcx->makeCurrent();
+ if (!d->olcx->initialized()) {
+ initializeOverlayGL();
+ d->olcx->setInitialized(true);
+ }
+ }
+}
+
+
+void QGLWidget::updateOverlayGL()
+{
+ Q_D(QGLWidget);
+ if (d->olcx) {
+ makeOverlayCurrent();
+ paintOverlayGL();
+ if (d->olcx->format().doubleBuffer()) {
+ if (d->autoSwap)
+ d->olcx->swapBuffers();
+ }
+ else {
+ glFlush();
+ }
+ }
+}
+
+
+void QGLWidget::setContext(QGLContext *context,
+ const QGLContext* shareContext,
+ bool deleteOldContext)
+{
+ Q_D(QGLWidget);
+ if (context == 0) {
+ qWarning("QGLWidget::setContext: Cannot set null context");
+ return;
+ }
+ if (!context->deviceIsPixmap() && context->device() != this) {
+ qWarning("QGLWidget::setContext: Context must refer to this widget");
+ return;
+ }
+
+ if (d->glcx)
+ d->glcx->doneCurrent();
+ QGLContext* oldcx = d->glcx;
+ d->glcx = context;
+
+ bool doShow = false;
+ if (oldcx && oldcx->d_func()->win == winId() && !d->glcx->deviceIsPixmap()) {
+ // We already have a context and must therefore create a new
+ // window since Windows does not permit setting a new OpenGL
+ // context for a window that already has one set.
+ doShow = isVisible();
+ QWidget *pW = static_cast<QWidget *>(parent());
+ QPoint pos = geometry().topLeft();
+ setParent(pW, windowFlags());
+ move(pos);
+ }
+
+ if (!d->glcx->isValid()) {
+ bool wasSharing = shareContext || (oldcx && oldcx->isSharing());
+ d->glcx->create(shareContext ? shareContext : oldcx);
+ // the above is a trick to keep disp lists etc when a
+ // QGLWidget has been reparented, so remove the sharing
+ // flag if we don't actually have a sharing context.
+ if (!wasSharing)
+ d->glcx->d_ptr->sharing = false;
+ }
+
+ if (deleteOldContext)
+ delete oldcx;
+
+ if (doShow)
+ show();
+}
+
+
+bool QGLWidgetPrivate::renderCxPm(QPixmap*)
+{
+ return false;
+}
+
+void QGLWidgetPrivate::cleanupColormaps()
+{
+ Q_Q(QGLWidget);
+ if (cmap.handle()) {
+ HDC hdc = GetDC(q->winId());
+ SelectPalette(hdc, (HPALETTE) GetStockObject(DEFAULT_PALETTE), FALSE);
+ DeleteObject((HPALETTE) cmap.handle());
+ ReleaseDC(q->winId(), hdc);
+ cmap.setHandle(0);
+ }
+ return;
+}
+
+const QGLColormap & QGLWidget::colormap() const
+{
+ return d_func()->cmap;
+}
+
+void QGLWidget::setColormap(const QGLColormap & c)
+{
+ Q_D(QGLWidget);
+ d->cmap = c;
+
+ if (d->cmap.handle()) { // already have an allocated cmap
+ d->updateColormap();
+ } else {
+ LOGPALETTE *lpal = (LOGPALETTE *) malloc(sizeof(LOGPALETTE)
+ +c.size()*sizeof(PALETTEENTRY));
+ lpal->palVersion = 0x300;
+ lpal->palNumEntries = c.size();
+ d->cmap.setHandle(CreatePalette(lpal));
+ free(lpal);
+ d->updateColormap();
+ }
+}
+
+void QGLExtensions::init()
+{
+ static bool init_done = false;
+
+ if (init_done)
+ return;
+ init_done = true;
+ QGLTempContext temp_ctx(QGLFormat::defaultFormat().directRendering());
+ init_extensions();
+}
+
+QT_END_NAMESPACE