summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/opengl/qgl.cpp101
-rw-r--r--src/opengl/qgl.h23
-rw-r--r--src/opengl/qgl_p.h18
-rw-r--r--src/opengl/qgl_win.cpp158
4 files changed, 275 insertions, 25 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index eb14c6c..ffce551 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -227,6 +227,9 @@ bool qt_gl_preferGL2Engine()
\value DirectRendering Specifies that the context is used for direct rendering to a display.
\value HasOverlay Enables the use of an overlay.
\value SampleBuffers Enables the use of sample buffers.
+ \value DeprecatedFunctions Enables the use of deprecated functionality for OpenGL 3.x
+ contexts. A context with deprecated functionality enabled is
+ called a full context in the OpenGL specification.
\value SingleBuffer Specifies the use of a single buffer, as opposed to double buffers.
\value NoDepthBuffer Disables the use of a depth buffer.
\value ColorIndex Specifies that the context should use a color index as its pixel format.
@@ -237,6 +240,9 @@ bool qt_gl_preferGL2Engine()
\value IndirectRendering Specifies that the context is used for indirect rendering to a buffer.
\value NoOverlay Disables the use of an overlay.
\value NoSampleBuffers Disables the use of sample buffers.
+ \value NoDeprecatedFunctions Disables the use of deprecated functionality for OpenGL 3.x
+ contexts. A context with deprecated functionality disabled is
+ called a forward compatible context in the OpenGL specification.
\sa {Sample Buffers Example}
*/
@@ -1082,6 +1088,84 @@ int QGLFormat::stencilBufferSize() const
}
/*!
+ \since 4.7
+
+ Set the OpenGL version. If a context compatible with the requested OpenGL version
+ cannot be created, a context compatible with version 1.x is created instead.
+
+ \sa majorVersion(), minorVersion()
+*/
+void QGLFormat::setVersion(int major, int minor)
+{
+ detach();
+ d->majorVersion = major;
+ d->minorVersion = minor;
+}
+
+/*!
+ \since 4.7
+
+ Returns the OpenGL major version.
+
+ \sa setVersion(), minorVersion()
+*/
+int QGLFormat::majorVersion() const
+{
+ return d->majorVersion;
+}
+
+/*!
+ \since 4.7
+
+ Returns the OpenGL minor version.
+
+ \sa setVersion(), majorVersion()
+*/
+int QGLFormat::minorVersion() const
+{
+ return d->minorVersion;
+}
+
+/*!
+ \enum QGLFormat::OpenGLContextProfile
+ \since 4.7
+
+ This enum describes the OpenGL context profiles that can be specified for contexts implementing
+ OpenGL version 3.2 or higher. These profiles are different from OpenGL ES profiles.
+
+ \value NoProfile OpenGL version is lower than 3.2.
+ \value CoreProfile Functionality deprecated in OpenGL version 3.0 is not available.
+ \value CompatibilityProfile Functionality from earlier OpenGL versions is available.
+*/
+
+/*!
+ \since 4.7
+
+ Set the OpenGL context profile. The profile is ignored if the requested OpenGL
+ version is less than 3.2.
+
+ \sa profile()
+*/
+void QGLFormat::setProfile(OpenGLContextProfile profile)
+{
+ detach();
+ d->profile = profile;
+}
+
+/*!
+ \since 4.7
+
+ Returns the OpenGL context profile.
+
+ \sa setProfile()
+*/
+QGLFormat::OpenGLContextProfile QGLFormat::profile() const
+{
+ return d->profile;
+}
+
+
+/*!
\fn bool QGLFormat::hasOpenGL()
Returns true if the window system has any OpenGL support;
@@ -1155,8 +1239,7 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
QGLFormat::OpenGL_Version_1_4 |
QGLFormat::OpenGL_Version_1_5 |
QGLFormat::OpenGL_Version_2_0;
- QString minorVersion = versionString.section(QLatin1Char(' '), 0, 0).section(QLatin1Char('.'), 1, 1);
- if (minorVersion == QChar(QLatin1Char('1')))
+ if (versionString[2].toAscii() == '1')
versionFlags |= QGLFormat::OpenGL_Version_2_1;
} else if (versionString.startsWith(QLatin1String("3."))) {
versionFlags |= QGLFormat::OpenGL_Version_1_1 |
@@ -1167,6 +1250,14 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
QGLFormat::OpenGL_Version_2_0 |
QGLFormat::OpenGL_Version_2_1 |
QGLFormat::OpenGL_Version_3_0;
+ switch (versionString[2].toAscii()) {
+ case '2':
+ versionFlags |= QGLFormat::OpenGL_Version_3_2;
+ case '1':
+ versionFlags |= QGLFormat::OpenGL_Version_3_1;
+ default:
+ break;
+ }
} else {
qWarning("Unrecognised OpenGL version");
}
@@ -1201,6 +1292,12 @@ QGLFormat::OpenGLVersionFlags Q_AUTOTEST_EXPORT qOpenGLVersionFlagsFromString(co
\value OpenGL_Version_3_0 OpenGL version 3.0 or higher is present.
+ \value OpenGL_Version_3_1 OpenGL version 3.1 or higher is present.
+ Note that OpenGL version 3.1 or higher does not necessarily support all the features of
+ version 3.0 and lower.
+
+ \value OpenGL_Version_3_2 OpenGL version 3.2 or higher is present.
+
\value OpenGL_ES_CommonLite_Version_1_0 OpenGL ES version 1.0 Common Lite or higher is present.
\value OpenGL_ES_Common_Version_1_0 OpenGL ES version 1.0 Common or higher is present.
diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h
index 2076c46..d2fe5fb 100644
--- a/src/opengl/qgl.h
+++ b/src/opengl/qgl.h
@@ -144,6 +144,7 @@ namespace QGL
DirectRendering = 0x0080,
HasOverlay = 0x0100,
SampleBuffers = 0x0200,
+ DeprecatedFunctions = 0x0400,
SingleBuffer = DoubleBuffer << 16,
NoDepthBuffer = DepthBuffer << 16,
ColorIndex = Rgba << 16,
@@ -153,7 +154,8 @@ namespace QGL
NoStereoBuffers = StereoBuffers << 16,
IndirectRendering = DirectRendering << 16,
NoOverlay = HasOverlay << 16,
- NoSampleBuffers = SampleBuffers << 16
+ NoSampleBuffers = SampleBuffers << 16,
+ NoDeprecatedFunctions = DeprecatedFunctions << 16
};
Q_DECLARE_FLAGS(FormatOptions, FormatOption)
}
@@ -235,7 +237,20 @@ public:
static bool hasOpenGL();
static bool hasOpenGLOverlays();
- enum OpenGLVersionFlag {
+ void setVersion(int major, int minor);
+ int majorVersion() const;
+ int minorVersion() const;
+
+ enum OpenGLContextProfile {
+ NoProfile,
+ CoreProfile,
+ CompatibilityProfile
+ };
+
+ void setProfile(OpenGLContextProfile profile);
+ OpenGLContextProfile profile() const;
+
+ enum OpenGLVersionFlag {
OpenGL_Version_None = 0x00000000,
OpenGL_Version_1_1 = 0x00000001,
OpenGL_Version_1_2 = 0x00000002,
@@ -249,7 +264,9 @@ public:
OpenGL_ES_Common_Version_1_1 = 0x00000200,
OpenGL_ES_CommonLite_Version_1_1 = 0x00000400,
OpenGL_ES_Version_2_0 = 0x00000800,
- OpenGL_Version_3_0 = 0x00001000
+ OpenGL_Version_3_0 = 0x00001000,
+ OpenGL_Version_3_1 = 0x00002000,
+ OpenGL_Version_3_2 = 0x00004000
};
Q_DECLARE_FLAGS(OpenGLVersionFlags, OpenGLVersionFlag)
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 99c0f33..a075a31 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -132,11 +132,15 @@ public:
QGLFormatPrivate()
: ref(1)
{
- opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering | QGL::StencilBuffer;
+ opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering
+ | QGL::StencilBuffer | QGL::DeprecatedFunctions;
pln = 0;
depthSize = accumSize = stencilSize = redSize = greenSize = blueSize = alphaSize = -1;
numSamples = -1;
swapInterval = -1;
+ majorVersion = 1;
+ minorVersion = 0;
+ profile = QGLFormat::NoProfile;
}
QGLFormatPrivate(const QGLFormatPrivate *other)
: ref(1),
@@ -150,7 +154,10 @@ public:
blueSize(other->blueSize),
alphaSize(other->alphaSize),
numSamples(other->numSamples),
- swapInterval(other->swapInterval)
+ swapInterval(other->swapInterval),
+ majorVersion(other->majorVersion),
+ minorVersion(other->minorVersion),
+ profile(other->profile)
{
}
QAtomicInt ref;
@@ -165,6 +172,9 @@ public:
int alphaSize;
int numSamples;
int swapInterval;
+ int majorVersion;
+ int minorVersion;
+ QGLFormat::OpenGLContextProfile profile;
};
class QGLWidgetPrivate : public QWidgetPrivate
@@ -277,6 +287,10 @@ public:
void cleanup();
#if defined(Q_WS_WIN)
+ void updateFormatVersion();
+#endif
+
+#if defined(Q_WS_WIN)
HGLRC rc;
HDC dc;
WId win;
diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
index 5b5820a..c2170e0 100644
--- a/src/opengl/qgl_win.cpp
+++ b/src/opengl/qgl_win.cpp
@@ -122,6 +122,30 @@ typedef bool (APIENTRY *PFNWGLCHOOSEPIXELFORMATARB)(HDC hdc,
#define WGL_TYPE_COLORINDEX_ARB 0x202C
#endif
+#ifndef WGL_ARB_create_context
+#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
+#define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
+#define WGL_CONTEXT_FLAGS_ARB 0x2094
+#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
+#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
+#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
+#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x0001
+#define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x0002
+// Error codes returned by GetLastError().
+#define ERROR_INVALID_VERSION_ARB 0x2095
+#define ERROR_INVALID_PROFILE_ARB 0x2096
+#endif
+
+#ifndef GL_VERSION_3_2
+#define GL_CONTEXT_PROFILE_MASK 0x9126
+#define GL_MAJOR_VERSION 0x821B
+#define GL_MINOR_VERSION 0x821C
+#define GL_NUM_EXTENSIONS 0x821D
+#define GL_CONTEXT_FLAGS 0x821E
+#define GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT 0x0001
+#endif
+
QT_BEGIN_NAMESPACE
class QGLCmapPrivate
@@ -681,8 +705,118 @@ public:
WId dmy_id;
};
+static bool qgl_create_context(HDC hdc, QGLContextPrivate *d, QGLContextPrivate *shareContext)
+{
+ d->rc = 0;
+
+ typedef HGLRC (APIENTRYP PFNWGLCREATECONTEXTATTRIBSARB)(HDC, HGLRC, const int *);
+ PFNWGLCREATECONTEXTATTRIBSARB wglCreateContextAttribsARB =
+ (PFNWGLCREATECONTEXTATTRIBSARB) wglGetProcAddress("wglCreateContextAttribsARB");
+ if (wglCreateContextAttribsARB) {
+ int attributes[11];
+ int attribIndex = 0;
+ const int major = d->reqFormat.majorVersion();
+ const int minor = d->reqFormat.minorVersion();
+ attributes[attribIndex++] = WGL_CONTEXT_MAJOR_VERSION_ARB;
+ attributes[attribIndex++] = major;
+ attributes[attribIndex++] = WGL_CONTEXT_MINOR_VERSION_ARB;
+ attributes[attribIndex++] = minor;
+
+ if (major >= 3 && !d->reqFormat.testOption(QGL::DeprecatedFunctions)) {
+ attributes[attribIndex++] = WGL_CONTEXT_FLAGS_ARB;
+ attributes[attribIndex++] = WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
+ }
+
+ if ((major == 3 && minor >= 2) || major > 3) {
+ switch (d->reqFormat.profile()) {
+ case QGLFormat::NoProfile:
+ break;
+ case QGLFormat::CoreProfile:
+ attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+ attributes[attribIndex++] = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
+ break;
+ case QGLFormat::CompatibilityProfile:
+ attributes[attribIndex++] = WGL_CONTEXT_PROFILE_MASK_ARB;
+ attributes[attribIndex++] = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
+ break;
+ default:
+ qWarning("QGLContext::chooseContext(): Context profile not supported.");
+ return false;
+ }
+ }
+
+ if (d->reqFormat.plane() != 0) {
+ attributes[attribIndex++] = WGL_CONTEXT_LAYER_PLANE_ARB;
+ attributes[attribIndex++] = d->reqFormat.plane();
+ }
+
+ attributes[attribIndex++] = 0; // Terminate list.
+ d->rc = wglCreateContextAttribsARB(hdc, shareContext && shareContext->valid
+ ? shareContext->rc : 0, attributes);
+ if (d->rc) {
+ if (shareContext)
+ shareContext->sharing = d->sharing = true;
+ return true;
+ }
+ }
+
+ d->rc = wglCreateLayerContext(hdc, d->reqFormat.plane());
+ if (d->rc && shareContext && shareContext->valid)
+ shareContext->sharing = d->sharing = wglShareLists(shareContext->rc, d->rc);
+ return d->rc != 0;
+}
+
+void QGLContextPrivate::updateFormatVersion()
+{
+ const GLubyte *s = glGetString(GL_VERSION);
+
+ if (!(s && s[0] >= '0' && s[0] <= '9' && s[1] == '.' && s[2] >= '0' && s[2] <= '9')) {
+ if (!s)
+ qWarning("QGLContext::chooseContext(): OpenGL version string is null.");
+ else
+ qWarning("QGLContext::chooseContext(): Unexpected OpenGL version string format.");
+ glFormat.setVersion(0, 0);
+ glFormat.setProfile(QGLFormat::NoProfile);
+ glFormat.setOption(QGL::DeprecatedFunctions);
+ return;
+ }
+
+ int major = s[0] - '0';
+ int minor = s[2] - '0';
+ glFormat.setVersion(major, minor);
+
+ if (major < 3) {
+ glFormat.setProfile(QGLFormat::NoProfile);
+ glFormat.setOption(QGL::DeprecatedFunctions);
+ } else {
+ GLint value = 0;
+ if (major > 3 || minor >= 2)
+ glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &value);
+
+ switch (value) {
+ case WGL_CONTEXT_CORE_PROFILE_BIT_ARB:
+ glFormat.setProfile(QGLFormat::CoreProfile);
+ break;
+ case WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
+ glFormat.setProfile(QGLFormat::CompatibilityProfile);
+ break;
+ default:
+ glFormat.setProfile(QGLFormat::NoProfile);
+ break;
+ }
+
+ glGetIntegerv(GL_CONTEXT_FLAGS, &value);
+ if (value & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+ glFormat.setOption(QGL::NoDeprecatedFunctions);
+ else
+ glFormat.setOption(QGL::DeprecatedFunctions);
+ }
+}
+
bool QGLContext::chooseContext(const QGLContext* shareContext)
{
+ QGLContextPrivate *share = shareContext ? const_cast<QGLContext *>(shareContext)->d_func() : 0;
+
Q_D(QGLContext);
// workaround for matrox driver:
// make a cheap call to opengl to force loading of DLL
@@ -740,8 +874,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
goto end;
}
- d->rc = wglCreateLayerContext(myDc, d->glFormat.plane());
- if (!d->rc) {
+ if (!qgl_create_context(myDc, d, share)) {
qwglError("QGLContext::chooseContext()", "CreateLayerContext");
result = false;
goto end;
@@ -791,16 +924,7 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
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;
- }
- {
+ } else {
PIXELFORMATDESCRIPTOR pfd;
PIXELFORMATDESCRIPTOR realPfd;
d->pixelFormatId = choosePixelFormat(&pfd, myDc);
@@ -839,17 +963,12 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
goto end;
}
- if (!(d->rc = wglCreateLayerContext(myDc, 0))) {
+ if (!qgl_create_context(myDc, d, share)) {
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) {
@@ -864,6 +983,9 @@ bool QGLContext::chooseContext(const QGLContext* shareContext)
end:
// vblanking
wglMakeCurrent(myDc, d->rc);
+ if (d->rc)
+ d->updateFormatVersion();
+
typedef BOOL (APIENTRYP PFNWGLSWAPINTERVALEXT) (int interval);
typedef int (APIENTRYP PFNWGLGETSWAPINTERVALEXT) (void);
PFNWGLSWAPINTERVALEXT wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXT) wglGetProcAddress("wglSwapIntervalEXT");
generated by cgit v0.12 at 2024-11-10 17:08:33 (GMT)