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Merge pull request #1897 from pijyoi/fix_win32_plotcurveitem_opengl

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PlotCurveItem: setup modelview and projection
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Ogi Moore 2021-07-15 19:48:20 -07:00 committed by GitHub
commit 910142aa6f
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1 changed files with 15 additions and 0 deletions
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15
pyqtgraph/graphicsItems/PlotCurveItem.py
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@ -568,6 +568,21 @@ class PlotCurveItem(GraphicsObject):
p.beginNativePainting() p.beginNativePainting()
import OpenGL.GL as gl import OpenGL.GL as gl
if sys.platform == 'win32':
# If Qt is built to dynamically load OpenGL, then the projection and
# modelview matrices are not setup.
# https://doc.qt.io/qt-6/windows-graphics.html
# https://code.woboq.org/qt6/qtbase/src/opengl/qopenglpaintengine.cpp.html
# Technically, we could enable it for all platforms, but for now, just
# enable it where it is required, i.e. Windows
tr = self.sceneTransform()
rect = widget.rect()
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glLoadIdentity()
gl.glOrtho(rect.x(), rect.width(), rect.height(), rect.y(), -999999, 999999)
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glLoadTransposeMatrixf(QtGui.QMatrix4x4(tr).copyDataTo())
## set clipping viewport ## set clipping viewport
view = self.getViewBox() view = self.getViewBox()
if view is not None: if view is not None: