本文整理汇总了Python中PyQt5.QtGui.QOpenGLContext.swapBuffers方法的典型用法代码示例。如果您正苦于以下问题：Python QOpenGLContext.swapBuffers方法的具体用法？Python QOpenGLContext.swapBuffers怎么用？Python QOpenGLContext.swapBuffers使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt5.QtGui.QOpenGLContext的用法示例。
在下文中一共展示了QOpenGLContext.swapBuffers方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: OpenGLWindow
# 需要导入模块: from PyQt5.QtGui import QOpenGLContext [as 别名]
# 或者: from PyQt5.QtGui.QOpenGLContext import swapBuffers [as 别名]
#.........这里部分代码省略.........
def paint(self, painter):
pass
def render(self, gl):
pass
def addGlFunctuins(self, GL, functions):
for function, arguments in functions.items():
GL[function].restype = None
GL[function].argtypes = arguments
setattr(self.m_gl, function, GL[function])
@exitOnKeyboardInterrupt
def renderNow(self):
if not self.isExposed():
return
self.m_update_pending = False
needsInitialize = False
if self.m_context is None:
self.m_context = QOpenGLContext(self)
self.m_context.setFormat(self.requestedFormat())
self.m_context.create()
needsInitialize = True
self.m_context.makeCurrent(self)
if needsInitialize:
# Sorry, no support for higher versions for now.
profile = QOpenGLVersionProfile()
profile.setVersion(2, 0)
self.m_gl = self.m_context.versionFunctions(profile)
self.m_gl.initializeOpenGLFunctions()
#print(self.m_context.hasExtension('GL_EXT_framebuffer_object'))
#print(self.m_context.hasExtension('GL_ARB_texture_float'))
#print(*sorted(self.m_context.extensions()), sep='\n')
# Small hack. Guess noone mind?
import ctypes
import ctypes.util
GL = ctypes.CDLL(ctypes.util.find_library('GL'))
self.addGlFunctuins(GL, {
'glFramebufferTexture2D': (ctypes.c_uint, ctypes.c_uint, ctypes.c_uint, ctypes.c_uint, ctypes.c_int)
})
self.logger = QOpenGLDebugLogger()
self.logger.initialize()
self.logger.loggedMessages()
self.logger.messageLogged.connect(self.handleLoggedMassage)
self.logger.startLogging()
self.initialize(self.m_gl)
if not self.m_device:
self.m_device = QOpenGLPaintDevice()
self.m_gl.glClear(self.m_gl.GL_COLOR_BUFFER_BIT | self.m_gl.GL_DEPTH_BUFFER_BIT);
self.m_device.setSize(self.size())
painter = QPainter(self.m_device)
painter.beginNativePainting()
self.render(self.m_gl)
painter.endNativePainting()
self.paint(painter)
self.m_context.swapBuffers(self)
if self.m_animating:
self.renderLater()
def handleLoggedMassage(self, message):
# This three really annoyng and brings no useful info =\
if not (message.message().find('Use glDrawRangeElements() to avoid this.') > -1 or
message.message().find('CPU mapping a busy miptree') > -1 or
message.message().find('Flushing before mapping a referenced bo.') > -1
):
print(message.message().strip())
def event(self, event):
if event.type() == QEvent.UpdateRequest:
self.renderNow()
return True
return super(OpenGLWindow, self).event(event)
def exposeEvent(self, event):
self.renderNow()
def resizeEvent(self, event):
self.renderNow()示例2: OpenGLWindow
# 需要导入模块: from PyQt5.QtGui import QOpenGLContext [as 别名]
# 或者: from PyQt5.QtGui.QOpenGLContext import swapBuffers [as 别名]
class OpenGLWindow(QWindow):
def __init__(self, parent=None):
super(OpenGLWindow, self).__init__(parent)
self.m_update_pending = False
self.m_animating = False
self.m_context = None
self.m_gl = None
self.setSurfaceType(QWindow.OpenGLSurface)
def initialize(self):
pass
def setAnimating(self, animating):
self.m_animating = animating
if animating:
self.renderLater()
def renderLater(self):
if not self.m_update_pending:
self.m_update_pending = True
QGuiApplication.postEvent(self, QEvent(QEvent.UpdateRequest))
def renderNow(self):
if not self.isExposed():
return
self.m_update_pending = False
needsInitialize = False
if self.m_context is None:
self.m_context = QOpenGLContext(self)
self.m_context.setFormat(self.requestedFormat())
self.m_context.create()
needsInitialize = True
self.m_context.makeCurrent(self)
if needsInitialize:
self.m_gl = self.m_context.versionFunctions()
self.m_gl.initializeOpenGLFunctions()
self.initialize()
self.render(self.m_gl)
self.m_context.swapBuffers(self)
if self.m_animating:
self.renderLater()
def event(self, event):
if event.type() == QEvent.UpdateRequest:
self.renderNow()
return True
return super(OpenGLWindow, self).event(event)
def exposeEvent(self, event):
self.renderNow()
def resizeEvent(self, event):
self.renderNow()示例3: ViewerWindow
# 需要导入模块: from PyQt5.QtGui import QOpenGLContext [as 别名]
# 或者: from PyQt5.QtGui.QOpenGLContext import swapBuffers [as 别名]
#.........这里部分代码省略.........
self.update_view_matrix()
self.last_mouse_pos = 0,0
self.on_resize(*self.size)
def render(self):
if not self.isExposed():
return
self.context.makeCurrent(self)
bits = 0
bits |= gl.GL_COLOR_BUFFER_BIT
bits |= gl.GL_DEPTH_BUFFER_BIT
bits |= gl.GL_STENCIL_BUFFER_BIT
gl.glClear(bits)
gl.glEnable(gl.GL_PROGRAM_POINT_SIZE)
for program in self.layer_manager.programs():
if program.do_blending:
if self.bg_white:
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_SRC_ALPHA)
else:
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_ONE, gl.GL_SRC_ALPHA)
else:
gl.glDisable(gl.GL_BLEND)
self.layer_manager.draw()
if self.hud_program.is_visible:
self.hud_program.draw()
self.context.swapBuffers(self)
def event(self, event):
# print event.type()
if event.type() == QEvent.UpdateRequest:
self.render()
return True
return super(ViewerWindow, self).event(event)
def exposeEvent(self, event):
self.render()
def resizeEvent(self, event):
size = event.size()
self.on_resize(size.width(), size.height())
self.render()
def update_view_matrix(self):
self.view = np.eye(4, dtype=np.float32)
translate(self.view, self.translation[0], self.translation[1], self.translation[2] )
scale(self.view, self.scale, self.scale, self.scale)
self.view = self.view.dot( np.array(q.matrix(self.rotation), dtype=np.float32) )
# translate(self.view, -self.translation[0], -self.translation[1], -self.translation[2] )
translate(self.view, 0,0, self.camera_position)
for program in self.layer_manager.programs():
program.setUniform('u_view', self.view)
if program.draw_type == 'points':
program.setUniform('u_model_scale', self.scale)
def update_projection_matrix(self):
view_width, view_height = [x/self.radius for x in self.size]