#
-# Copyright 2008, 2009 Free Software Foundation, Inc.
+# Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
@param parent the parent widgit
"""
attribList = (wx.glcanvas.WX_GL_DOUBLEBUFFER, wx.glcanvas.WX_GL_RGBA)
- wx.glcanvas.GLCanvas.__init__(self, parent, attribList=attribList)
+ wx.glcanvas.GLCanvas.__init__(self, parent, attribList=attribList);
+ self.use_persistence=False
+ self.persist_alpha=2.0/15
+ self.clear_accum=True
self._gl_init_flag = False
self._resized_flag = True
self._init_fcns = list()
self.Bind(wx.EVT_SIZE, self._on_size)
self.Bind(wx.EVT_ERASE_BACKGROUND, lambda e: None)
+ def set_use_persistence(self,enable):
+ self.use_persistence=enable
+ self.clear_accum=True
+
+ def set_persist_alpha(self,analog_alpha):
+ self.persist_alpha=analog_alpha
+
def new_gl_cache(self, draw_fcn, draw_pri=50):
"""
Create a new gl cache.
"""
self.lock()
self._resized_flag = True
+ self.clear_accum=True
self.unlock()
def _on_paint(self, event):
self._resized_flag = False
#clear, draw functions, swap
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
+
+ if False:
+ GL.glEnable (GL.GL_LINE_SMOOTH)
+ GL.glEnable (GL.GL_POLYGON_SMOOTH)
+ GL.glEnable (GL.GL_BLEND)
+ GL.glBlendFunc (GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
+ GL.glHint (GL.GL_LINE_SMOOTH_HINT, GL.GL_NICEST) #GL.GL_DONT_CARE)
+ GL.glHint(GL.GL_POLYGON_SMOOTH_HINT, GL.GL_NICEST)
+ #GL.glLineWidth (1.5)
+
+ GL.glEnable(GL.GL_MULTISAMPLE) #Enable Multisampling anti-aliasing
+
+
for fcn in self._draw_fcns: fcn[1]()
+
+ if self.use_persistence:
+ if self.clear_accum:
+ #GL.glClear(GL.GL_ACCUM_BUFFER_BIT)
+ GL.glAccum(GL.GL_LOAD, 1.0)
+ self.clear_accum=False
+
+ GL.glAccum(GL.GL_MULT, 1.0-self.persist_alpha)
+ GL.glAccum(GL.GL_ACCUM, self.persist_alpha)
+ GL.glAccum(GL.GL_RETURN, 1.0)
self.SwapBuffers()
self.unlock()