diff options
Diffstat (limited to 'examples/multimedia/video/qmlvideofilter_opencl/main.cpp')
| -rw-r--r-- | examples/multimedia/video/qmlvideofilter_opencl/main.cpp | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/examples/multimedia/video/qmlvideofilter_opencl/main.cpp b/examples/multimedia/video/qmlvideofilter_opencl/main.cpp index bdaddb8d2..af5aa8f65 100644 --- a/examples/multimedia/video/qmlvideofilter_opencl/main.cpp +++ b/examples/multimedia/video/qmlvideofilter_opencl/main.cpp @@ -46,6 +46,10 @@ #include <CL/opencl.h> #endif +#ifdef Q_OS_LINUX +#include <QtPlatformHeaders/QGLXNativeContext> +#endif + #include "rgbframehelper.h" static const char *openclSrc = @@ -119,10 +123,17 @@ CLFilterRunnable::CLFilterRunnable(CLFilter *filter) : // Set up OpenCL. QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions(); - cl_int err; cl_uint n; - if (clGetPlatformIDs(0, 0, &n) != CL_SUCCESS) { - qWarning("Failed to get platform ID count"); + cl_int err = clGetPlatformIDs(0, 0, &n); + if (err != CL_SUCCESS) { + qWarning("Failed to get platform ID count (error %d)", err); + if (err == -1001) { + qDebug("Could not find OpenCL implementation. ICD missing?" +#ifdef Q_OS_LINUX + " Check /etc/OpenCL/vendors." +#endif + ); + } return; } if (n == 0) { @@ -140,6 +151,7 @@ CLFilterRunnable::CLFilterRunnable(CLFilter *filter) : qDebug("GL_VENDOR: %s", vendor); const bool isNV = vendor && strstr(vendor, "NVIDIA"); const bool isIntel = vendor && strstr(vendor, "Intel"); + const bool isAMD = vendor && strstr(vendor, "ATI"); qDebug("Found %u OpenCL platforms:", n); for (cl_uint i = 0; i < n; ++i) { QByteArray name; @@ -153,6 +165,8 @@ CLFilterRunnable::CLFilterRunnable(CLFilter *filter) : platform = platformIds[i]; else if (isIntel && name.contains(QByteArrayLiteral("Intel"))) platform = platformIds[i]; + else if (isAMD && name.contains(QByteArrayLiteral("AMD"))) + platform = platformIds[i]; } qDebug("Using platform %p", platform); @@ -166,6 +180,18 @@ CLFilterRunnable::CLFilterRunnable(CLFilter *filter) : CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(), CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(), 0 }; +#elif defined(Q_OS_LINUX) + // An elegant alternative to glXGetCurrentContext. This will even survive + // (without interop) when using something other than GLX. + QVariant nativeGLXHandle = QOpenGLContext::currentContext()->nativeHandle(); + QGLXNativeContext nativeGLXContext; + if (!nativeGLXHandle.isNull() && nativeGLXHandle.canConvert<QGLXNativeContext>()) + nativeGLXContext = nativeGLXHandle.value<QGLXNativeContext>(); + else + qWarning("Failed to get the underlying GLX context from the current QOpenGLContext"); + cl_context_properties contextProps[] = { CL_CONTEXT_PLATFORM, (cl_context_properties) platform, + CL_GL_CONTEXT_KHR, (cl_context_properties) nativeGLXContext.context(), + 0 }; #endif m_clContext = clCreateContextFromType(contextProps, CL_DEVICE_TYPE_GPU, 0, 0, &err); |