diff options
Diffstat (limited to 'src/plugins/platforms')
-rw-r--r-- | src/plugins/platforms/windows/qwindowsopengltester.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qwindowsopengltester.cpp b/src/plugins/platforms/windows/qwindowsopengltester.cpp index ac886b6bee..f6caf8b06e 100644 --- a/src/plugins/platforms/windows/qwindowsopengltester.cpp +++ b/src/plugins/platforms/windows/qwindowsopengltester.cpp @@ -43,6 +43,7 @@ # include <QtCore/qt_windows.h> # include <private/qsystemlibrary_p.h> # include <d3d9.h> +# include <GL/gl.h> #endif QT_BEGIN_NAMESPACE @@ -326,6 +327,37 @@ bool QWindowsOpenGLTester::testDesktopGL() goto cleanup; // Now that there is finally a context current, try doing something useful. + + // Check the version. If we got 1.x then it's all hopeless and we can stop right here. + typedef const GLubyte * (APIENTRY * GetString_t)(GLenum name); + GetString_t GetString = reinterpret_cast<GetString_t>(::GetProcAddress(lib, "glGetString")); + if (GetString) { + const char *versionStr = (const char *) GetString(GL_VERSION); + if (versionStr) { + const QByteArray version(versionStr); + const int majorDot = version.indexOf('.'); + if (majorDot != -1) { + int minorDot = version.indexOf('.', majorDot + 1); + if (minorDot == -1) + minorDot = version.size(); + const int major = version.mid(0, majorDot).toInt(); + const int minor = version.mid(majorDot + 1, minorDot - majorDot - 1).toInt(); + qCDebug(lcQpaGl, "Basic wglCreateContext gives version %d.%d", major, minor); + // Try to be as lenient as possible. Missing version, bogus values and + // such are all accepted. The driver may still be functional. Only + // check for known-bad cases, like versions "1.4.0 ...". + if (major == 1) { + result = false; + qCDebug(lcQpaGl, "OpenGL version too low"); + } + } + } + } else { + result = false; + qCDebug(lcQpaGl, "OpenGL 1.x entry points not found"); + } + + // Check for a shader-specific function. if (WGL_GetProcAddress("glCreateShader")) { result = true; qCDebug(lcQpaGl, "OpenGL 2.0 entry points available"); |