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KMS QPA Plugin: use GBM cursor writer

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GBM provides a way to write directly to a buffer object that gets set
as the drmMode cursor. This eliminates the need to create a GL texture
and opens this class up to platforms that support GBM but not OpenGL.

Change-Id: I7297827387ef9a717a5287b5484f14c9987b4158
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
This commit is contained in:
anknight 2013-02-14 15:29:10 +02:00 committed by The Qt Project
parent 4d14d14021
commit 936aceb5f2
2 changed files with 19 additions and 56 deletions
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65
src/plugins/platforms/kms/qkmscursor.cpp
View File

@ -48,22 +48,17 @@ QT_BEGIN_NAMESPACE
QKmsCursor::QKmsCursor(QKmsScreen *screen)
: m_screen(screen),
m_graphicsBufferManager(screen->device()->gbmDevice()),
m_cursorBufferObject(gbm_bo_create(m_graphicsBufferManager, 64, 64, GBM_FORMAT_ARGB8888,
GBM_BO_USE_CURSOR_64X64|GBM_BO_USE_WRITE)),
m_cursorImage(new QPlatformCursorImage(0, 0, 0, 0, 0, 0)),
m_moved(false)
{
gbm_bo *bo = gbm_bo_create(m_graphicsBufferManager, 64, 64,
GBM_BO_FORMAT_ARGB8888,
GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_RENDERING);
m_eglImage = eglCreateImageKHR(m_screen->device()->eglDisplay(), 0, EGL_NATIVE_PIXMAP_KHR,
bo, 0);
gbm_bo_destroy(bo);
m_cursorImage = new QPlatformCursorImage(0, 0, 0, 0, 0, 0);
}
QKmsCursor::~QKmsCursor()
{
drmModeSetCursor(m_screen->device()->fd(), m_screen->crtcId(),
0, 0, 0);
drmModeSetCursor(m_screen->device()->fd(), m_screen->crtcId(), 0, 0, 0);
gbm_bo_destroy(m_cursorBufferObject);
}
void QKmsCursor::pointerEvent(const QMouseEvent &event)
@ -78,58 +73,30 @@ void QKmsCursor::pointerEvent(const QMouseEvent &event)
}
}
void QKmsCursor::changeCursor(QCursor *widgetCursor, QWindow *window)
void QKmsCursor::changeCursor(QCursor *windowCursor, QWindow *window)
{
Q_UNUSED(window)
if (!m_moved)
drmModeMoveCursor(m_screen->device()->fd(), m_screen->crtcId(), 0, 0);
const Qt::CursorShape newShape = widgetCursor ? widgetCursor->shape() : Qt::ArrowCursor;
const Qt::CursorShape newShape = windowCursor ? windowCursor->shape() : Qt::ArrowCursor;
if (newShape != Qt::BitmapCursor) {
m_cursorImage->set(newShape);
} else {
m_cursorImage->set(widgetCursor->pixmap().toImage(),
widgetCursor->hotSpot().x(),
widgetCursor->hotSpot().y());
m_cursorImage->set(windowCursor->pixmap().toImage(),
windowCursor->hotSpot().x(),
windowCursor->hotSpot().y());
}
if ((m_cursorImage->image()->width() > 64) || (m_cursorImage->image()->width() > 64)) {
qWarning("failed to set hardware cursor: larger than 64x64.");
return;
}
if ((m_cursorImage->image()->width() > 64) || (m_cursorImage->image()->width() > 64))
qWarning("Warning: cursor larger than 64x64; only 64x64 pixels will be shown.");
QImage cursorImage = m_cursorImage->image()->convertToFormat(QImage::Format_RGB32);
//Load cursor image into EGLImage
GLuint cursorTexture;
glGenTextures(1, &cursorTexture);
glBindTexture(GL_TEXTURE_2D, cursorTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
//TODO: Format may be wrong here, need a color icon to test.
if (m_eglImage != EGL_NO_IMAGE_KHR) {
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, m_eglImage);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cursorImage.width(),
cursorImage.height(), GL_RGBA,
GL_UNSIGNED_BYTE, cursorImage.constBits());
} else {
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, cursorImage.width(),
cursorImage.height(), 0, GL_RGBA,
GL_UNSIGNED_BYTE, cursorImage.constBits());
}
//EGLImage needs to contain sprite before calling this:
gbm_bo *bufferObject = gbm_bo_import(m_graphicsBufferManager, GBM_BO_IMPORT_EGL_IMAGE,
m_eglImage, GBM_BO_USE_CURSOR_64X64);
quint32 handle = gbm_bo_get_handle(bufferObject).u32;
gbm_bo_destroy(bufferObject);
QImage cursorImage = m_cursorImage->image()->
convertToFormat(QImage::Format_ARGB32).copy(0, 0, 64, 64);
gbm_bo_write(m_cursorBufferObject, cursorImage.constBits(), cursorImage.byteCount());
quint32 handle = gbm_bo_get_handle(m_cursorBufferObject).u32;
int status = drmModeSetCursor(m_screen->device()->fd(),
m_screen->crtcId(), handle, 64, 64);

10
src/plugins/platforms/kms/qkmscursor.h
View File

@ -44,15 +44,11 @@
#include <qpa/qplatformcursor.h>
#define EGL_EGLEXT_PROTOTYPES 1
#include <EGL/egl.h>
#include <EGL/eglext.h>
QT_BEGIN_NAMESPACE
class QKmsScreen;
class gbm_device;
class gbm_bo;
class QKmsCursor : public QPlatformCursor
{
@ -61,12 +57,12 @@ public:
~QKmsCursor();
void pointerEvent(const QMouseEvent &event);
void changeCursor(QCursor *widgetCursor, QWindow *window);
void changeCursor(QCursor *windowCursor, QWindow *window);
private:
QKmsScreen *m_screen;
gbm_device *m_graphicsBufferManager;
EGLImageKHR m_eglImage;
gbm_bo *m_cursorBufferObject;
QPlatformCursorImage *m_cursorImage;
bool m_moved;
};