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platforms/drm: use gbm with NVidia driver 495+

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This commit is contained in:
Xaver Hugl 2021-10-14 17:25:13 +02:00
parent 866830d5ed
commit dc56b03df4
4 changed files with 21 additions and 6 deletions
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14
src/plugins/platforms/drm/drm_gpu.cpp
View file

@ -79,7 +79,14 @@ DrmGpu::DrmGpu(DrmBackend *backend, const QString &devNode, int fd, dev_t device
// find out if this GPU is using the NVidia proprietary driver
DrmScopedPointer<drmVersion> version(drmGetVersion(fd));
m_useEglStreams = strstr(version->name, "nvidia-drm");
m_isNVidia = strstr(version->name, "nvidia-drm");
m_useEglStreams = m_isNVidia;
#if HAVE_GBM
m_gbmDevice = gbm_create_device(m_fd);
if (m_gbmDevice) {
m_useEglStreams = m_isNVidia && strcmp(gbm_device_get_backend_name(m_gbmDevice), "nvidia") != 0;
}
#endif
m_socketNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);
connect(m_socketNotifier, &QSocketNotifier::activated, this, &DrmGpu::dispatchEvents);
@ -751,4 +758,9 @@ bool DrmGpu::addFB2ModifiersSupported() const
return m_addFB2ModifiersSupported;
}
bool DrmGpu::isNVidia() const
{
return m_isNVidia;
}
}

2
src/plugins/platforms/drm/drm_gpu.h
View file

@ -55,6 +55,7 @@ public:
bool atomicModeSetting() const;
bool addFB2ModifiersSupported() const;
bool useEglStreams() const;
bool isNVidia() const;
bool isFormatSupported(uint32_t drmFormat) const;
gbm_device *gbmDevice() const;
EGLDisplay eglDisplay() const;
@ -104,6 +105,7 @@ private:
bool m_atomicModeSetting;
bool m_useEglStreams;
bool m_addFB2ModifiersSupported = false;
bool m_isNVidia;
clockid_t m_presentationClock;
gbm_device* m_gbmDevice;
EGLDisplay m_eglDisplay = EGL_NO_DISPLAY;

5
src/plugins/platforms/drm/drm_object_plane.cpp
View file

@ -73,7 +73,10 @@ bool DrmPlane::init()
checkSupport(5, Transformation::ReflectY);
// read formats from blob if available and if modifiers are supported, and from the plane object if not
if (auto formatProp = getProp(PropertyIndex::In_Formats); formatProp && gpu()->addFB2ModifiersSupported() && qEnvironmentVariableIntValue("KWIN_DRM_USE_MODIFIERS") == 1) {
bool modifiersEnvSet = false;
bool modifiersEnv = qEnvironmentVariableIntValue("KWIN_DRM_USE_MODIFIERS", &modifiersEnvSet) != 0;
bool allowModifiers = (gpu()->isNVidia() && !modifiersEnvSet) || (modifiersEnvSet && modifiersEnv);
if (auto formatProp = getProp(PropertyIndex::In_Formats); formatProp && gpu()->addFB2ModifiersSupported() && allowModifiers) {
DrmScopedPointer<drmModePropertyBlobRes> propertyBlob(drmModeGetPropertyBlob(gpu()->fd(), formatProp->current()));
if (propertyBlob && propertyBlob->data) {
auto blob = static_cast<drm_format_modifier_blob*>(propertyBlob->data);

6
src/plugins/platforms/drm/egl_gbm_backend.cpp
View file

@ -88,14 +88,12 @@ bool EglGbmBackend::initializeEgl()
return false;
}
auto device = gbm_create_device(m_gpu->fd());
if (!device) {
if (!m_gpu->gbmDevice()) {
setFailed("Could not create gbm device");
return false;
}
m_gpu->setGbmDevice(device);
display = eglGetPlatformDisplayEXT(platform, device, nullptr);
display = eglGetPlatformDisplayEXT(platform, m_gpu->gbmDevice(), nullptr);
m_gpu->setEglDisplay(display);
}