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39
40#include "qeglfskmsegldevicescreen.h"
41#include "qeglfskmsegldevice.h"
42#include <QGuiApplication>
43#include <QLoggingCategory>
44#include <errno.h>
45
46QT_BEGIN_NAMESPACE
47
48Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug)
49
50QEglFSKmsEglDeviceScreen::QEglFSKmsEglDeviceScreen(QEglFSKmsDevice *device, const QKmsOutput &output)
51 : QEglFSKmsScreen(device, output)
52{
53}
54
55QEglFSKmsEglDeviceScreen::~QEglFSKmsEglDeviceScreen()
56{
57 const int remainingScreenCount = qGuiApp->screens().count();
58 qCDebug(qLcEglfsKmsDebug, "Screen dtor. Remaining screens: %d", remainingScreenCount);
59 if (!remainingScreenCount && !device()->screenConfig()->separateScreens())
60 static_cast<QEglFSKmsEglDevice *>(device())->destroyGlobalCursor();
61}
62
63QPlatformCursor *QEglFSKmsEglDeviceScreen::cursor() const
64{
65 // The base class creates a cursor via integration->createCursor()
66 // in its ctor. With separateScreens just use that. Otherwise
67 // there's a virtual desktop and the device has a global cursor
68 // and the base class has no dedicated cursor at all.
69 // config->hwCursor() is ignored for now, just use the standard OpenGL cursor.
70 return device()->screenConfig()->separateScreens()
71 ? QEglFSScreen::cursor()
72 : static_cast<QEglFSKmsEglDevice *>(device())->globalCursor();
73}
74
75void QEglFSKmsEglDeviceScreen::waitForFlip()
76{
77 QKmsOutput &op(output());
78 const int fd = device()->fd();
79 const uint32_t w = op.modes[op.mode].hdisplay;
80 const uint32_t h = op.modes[op.mode].vdisplay;
81
82 if (!op.mode_set) {
83 op.mode_set = true;
84
85 drmModeCrtcPtr currentMode = drmModeGetCrtc(fd, crtcId: op.crtc_id);
86 const bool alreadySet = currentMode && currentMode->width == w && currentMode->height == h;
87 if (currentMode)
88 drmModeFreeCrtc(ptr: currentMode);
89 if (alreadySet) {
90 // Maybe detecting the DPMS mode could help here, but there are no properties
91 // exposed on the connector apparently. So rely on an env var for now.
92 static bool alwaysDoSet = qEnvironmentVariableIntValue(varName: "QT_QPA_EGLFS_ALWAYS_SET_MODE");
93 if (!alwaysDoSet) {
94 qCDebug(qLcEglfsKmsDebug, "Mode already set");
95 return;
96 }
97 }
98
99 qCDebug(qLcEglfsKmsDebug, "Setting mode");
100 int ret = drmModeSetCrtc(fd, crtcId: op.crtc_id,
101 bufferId: uint32_t(-1), x: 0, y: 0,
102 connectors: &op.connector_id, count: 1,
103 mode: &op.modes[op.mode]);
104 if (ret)
105 qErrnoWarning(errno, msg: "drmModeSetCrtc failed");
106 }
107
108 if (!op.forced_plane_set) {
109 op.forced_plane_set = true;
110
111 if (op.wants_forced_plane) {
112 qCDebug(qLcEglfsKmsDebug, "Setting plane %u", op.forced_plane_id);
113 int ret = drmModeSetPlane(fd, plane_id: op.forced_plane_id, crtc_id: op.crtc_id, fb_id: uint32_t(-1), flags: 0,
114 crtc_x: 0, crtc_y: 0, crtc_w: w, crtc_h: h,
115 src_x: 0 << 16, src_y: 0 << 16, src_w: op.size.width() << 16, src_h: op.size.height() << 16);
116 if (ret == -1)
117 qErrnoWarning(errno, msg: "drmModeSetPlane failed");
118 }
119 }
120}
121
122QT_END_NAMESPACE
123

source code of qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms_egldevice/qeglfskmsegldevicescreen.cpp