本文整理汇总了Python中vispy.gloo.gl.glClear函数的典型用法代码示例。如果您正苦于以下问题：Python glClear函数的具体用法？Python glClear怎么用？Python glClear使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了glClear函数的15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: draw00
def draw00(event):
print(" {0:7}: {1}".format("0", bgcolors[0]))
if bgcolors[0] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[0])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()示例2: on_paint
def on_paint(self, event):
# Clear
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw shape with texture, nested context
self._program.draw(gl.GL_TRIANGLE_STRIP)示例3: draw11
def draw11(event):
print(' {0:7}: {1}'.format('1', bgcolors[1]))
if bgcolors[1] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[1])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()示例4: on_paint
def on_paint(self, event):
# Set framebuffer input output
self._program['u_texture'] = self._tex1
self._fbo.attach_color(self._tex2)
with self._fbo:
# Init
gl.glViewport(0, 0, im1.shape[1], im1.shape[0])
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw
self._program.draw(gl.GL_TRIANGLE_STRIP)
# Draw to the normal color buffer (i.e. the screen)
self._program['u_texture'] = self._tex2
# Init
gl.glViewport(0, 0, self.size[0], self.size[1])
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw
self._program.draw(gl.GL_TRIANGLE_STRIP)
# Prepare for next round
self._tex1, self._tex2 = self._tex2, self._tex1
# Force redraw
self.update()示例5: paint0
def paint0(event):
print(' {0:7}: {1}'.format(backend + '_0', bgcolors[0]))
if bgcolors[0] is not None:
gl.glViewport(0, 0, *list(_win_size))
gl.glClearColor(*bgcolors[0])
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glFinish()示例6: on_paint
def on_paint(self, event):
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Activate program and texture
gl.glUseProgram(self._prog_handle)
gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
# Set attributes (again, the loc can be cached)
loc = gl.glGetAttribLocation(
self._prog_handle,
'a_position'.encode('utf-8'))
gl.glEnableVertexAttribArray(loc)
if use_buffers:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._positions_handle)
gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 0, None)
else:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0) # 0 means do not use buffer
gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 0, positions)
#
loc = gl.glGetAttribLocation(
self._prog_handle,
'a_texcoord'.encode('utf-8'))
gl.glEnableVertexAttribArray(loc)
if use_buffers:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._texcoords_handle)
gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, 0, None)
else:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0) # 0 means do not use buffer
gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, 0, texcoords)
# Set uniforms (note that you could cache the locations)
loc = gl.glGetUniformLocation(
self._prog_handle,
'u_view'.encode('utf-8'))
gl.glUniformMatrix4fv(loc, 1, False, self.view)
loc = gl.glGetUniformLocation(
self._prog_handle,
'u_model'.encode('utf-8'))
gl.glUniformMatrix4fv(loc, 1, False, self.model)
loc = gl.glGetUniformLocation(
self._prog_handle,
'u_projection'.encode('utf-8'))
gl.glUniformMatrix4fv(loc, 1, False, self.projection)
# Draw
if use_buffers:
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._faces_handle)
gl.glDrawElements(
gl.GL_TRIANGLES,
faces.size,
gl.GL_UNSIGNED_INT,
None)
else:
gl.glDrawElements(
gl.GL_TRIANGLES,
faces.size,
gl.GL_UNSIGNED_INT,
faces)示例7: on_draw
def on_draw(self, event):
t = timeit.default_timer()
self.times.append(t)
if len(self.times) >= 2:
print(1./(t-self.times[-2]))
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
gl.glDrawArrays(gl.GL_POINTS, 0, len(self.data))
self.update()示例8: on_paint
def on_paint(self, event):
# Clear
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Correct way to draw the terrain
#self.program.draw(gl.GL_TRIANGLES)
"""Drawing as line strip is wrong as the VB represents triangles but
it gives better visualization of the terrain with minor mistakes
"""
self.program.draw(gl.GL_TRIANGLES)示例9: on_paint
def on_paint(self, event):
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# update angles
data['a_omega'] += do
data['a_theta'] += dt
# prevent accumulation
data['a_omega'] %= 2 * np.pi
data['a_theta'] %= 2 * np.pi
self.vbo.set_data(data)
self.program.draw(gl.GL_POINTS)示例10: on_paint
def on_paint(self, event):
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw
self.program.draw(gl.GL_POINTS)
# Next iteration
self._t = self.iteration(time.time() - self._t)
# Invoke a new draw
self.update()示例11: on_paint
def on_paint(event):
global t, t0, frames
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
t = time.time()
frames = frames + 1
elapsed = (t-t0) # seconds
if elapsed > 2.5:
print( "FPS : %.2f (%d frames in %.2f second)"
% (frames/elapsed, frames, elapsed))
t0, frames = t,0
canvas.update()示例12: on_paint
def on_paint(self, event):
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw
self.program["position"] = VertexBuffer(particles["position"], client=True)
self.program.draw(gl.GL_POINTS)
# Next iteration
self._t = self.iteration(time.time() - self._t)
# Invoke a new draw
self.update()示例13: on_paint
def on_paint(self, event):
global T,dT,p,n
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
T += dT
self.index = (self.index+1)%p
data['a_position'][self.index::p,0] = np.cos(T)
data['a_position'][self.index::p,1] = .5*np.sin(T)
data['a_color'][:,3] -= 1.0/p
data['a_color'][self.index::p,3] = 1
self.vbo.set_data(data)
self.program.draw(gl.GL_POINTS)示例14: _test_setting_stuff
def _test_setting_stuff():
# Set stuff to touch functions
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
#
gl.glBlendColor(1.0, 1.0, 1.0, 1.0)
gl.glBlendEquation(gl.GL_FUNC_ADD)
gl.glBlendEquationSeparate(gl.GL_FUNC_ADD, gl.GL_FUNC_ADD)
gl.glBlendFunc(gl.GL_ONE, gl.GL_ZERO)
gl.glBlendFuncSeparate(gl.GL_ONE, gl.GL_ZERO, gl.GL_ONE, gl.GL_ZERO)
#
gl.glClearColor(0.0, 0.0, 0.0, 1.0)
gl.glClearDepth(1)
gl.glClearStencil(0)
#
gl.glColorMask(True, True, True, True)
gl.glDepthMask(False)
gl.glStencilMask(255)
gl.glStencilMaskSeparate(gl.GL_FRONT, 128)
#
gl.glStencilFunc(gl.GL_ALWAYS, 0, 255)
gl.glStencilFuncSeparate(gl.GL_FRONT, gl.GL_ALWAYS, 0, 255)
gl.glStencilOp(gl.GL_KEEP, gl.GL_KEEP, gl.GL_KEEP)
gl.glStencilOpSeparate(gl.GL_FRONT, gl.GL_KEEP, gl.GL_KEEP, gl.GL_KEEP)
#
gl.glFrontFace(gl.GL_CW)
gl.glHint(gl.GL_GENERATE_MIPMAP_HINT, gl.GL_FASTEST)
gl.glLineWidth(2.0)
gl.glPolygonOffset(0.0, 0.0)
gl.glSampleCoverage(1.0, False)
# And getting stuff
try:
with use_log_level('error', print_msg=False):
r, p = gl.glGetShaderPrecisionFormat(gl.GL_FRAGMENT_SHADER,
gl.GL_HIGH_FLOAT)
gl.check_error() # Sometimes the func is there but OpenGL errs
except Exception:
pass # accept if the function is not there ...
# We should catch RuntimeError and GL.error.NullFunctionError,
# but PyOpenGL may not be available.
# On Travis this function was not there on one machine according
# to PyOpenGL, but our desktop backend worked fine ...
#
v = gl.glGetParameter(gl.GL_VERSION)
assert_true(isinstance(v, string_types))
assert_true(len(v) > 0)
gl.check_error()示例15: on_paint
def on_paint(self, event):
# Clear
gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
# Draw
self._program['sizeFactor'] = 0.5 + np.sin(time.time()*3)*0.2
# Draw (pick one!)
#self._program.draw(gl.GL_TRIANGLE_STRIP)
self._program.draw(gl.GL_TRIANGLES, indices_buffer)
#self._program.draw(gl.GL_TRIANGLES, client_indices_buffer) # Not recommended
self.update()