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reimplement readQImage()

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tested that call to repaint() is not needed
This commit is contained in:
KIU Shueng Chuan 2021-07-17 10:28:52 +08:00
parent 5d7dd101f2
commit 1b00d3448a
1 changed files with 1 additions and 14 deletions
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15
pyqtgraph/opengl/GLViewWidget.py
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@ -535,20 +535,7 @@ class GLViewWidget(QtWidgets.QOpenGLWidget):
""" """
Read the current buffer pixels out as a QImage. Read the current buffer pixels out as a QImage.
""" """
w = self.deviceWidth() return self.grabFramebuffer()
h = self.deviceHeight()
self.repaint()
pixels = np.empty((h, w, 4), dtype=np.ubyte)
pixels[:] = 128
pixels[...,0] = 50
pixels[...,3] = 255
glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels)
pixels = pixels[::-1].copy() # flip vertical
qimg = fn.ndarray_to_qimage(pixels, QtGui.QImage.Format.Format_RGBA8888)
return qimg
def renderToArray(self, size, format=GL_BGRA, type=GL_UNSIGNED_BYTE, textureSize=1024, padding=256): def renderToArray(self, size, format=GL_BGRA, type=GL_UNSIGNED_BYTE, textureSize=1024, padding=256):
w,h = map(int, size) w,h = map(int, size)