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Diffstat (limited to 'src/opengl/qgl_win.cpp')
-rw-r--r--src/opengl/qgl_win.cpp158
1 files changed, 140 insertions, 18 deletions
diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
index ed4814f..b5f952e 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
@@ -682,8 +706,118 @@ QGLTemporaryContext::~QGLTemporaryContext()
wglMakeCurrent(d->old_dc, d->old_context);
}
+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
@@ -741,8 +875,7 @@ 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;
@@ -792,16 +925,7 @@ 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);
@@ -840,17 +964,12 @@ 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) {
@@ -865,6 +984,9 @@ 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 2024-11-15 08:30:50 (GMT)