def test_import_vispy_scene():
""" Importing vispy.gloo.gl.desktop should not import PyOpenGL. """
modnames = loaded_vispy_modules('vispy.scene', 2)
more_modules = ['vispy.app', 'vispy.gloo', 'vispy.glsl', 'vispy.scene',
'vispy.color',
'vispy.io', 'vispy.geometry', 'vispy.visuals']
assert_equal(modnames, set(_min_modules + more_modules))
def test_config():
"""Test vispy config methods and file downloading"""
assert_raises(TypeError, config.update, data_path=dict())
assert_raises(KeyError, config.update, foo="bar") # bad key
data_dir = op.join(temp_dir, "data")
assert_raises(IOError, set_data_dir, data_dir) # didn't say to create
orig_val = os.environ.get("_VISPY_CONFIG_TESTING", None)
os.environ["_VISPY_CONFIG_TESTING"] = "true"
try:
assert_raises(IOError, set_data_dir, data_dir) # doesn't exist yet
set_data_dir(data_dir, create=True, save=True)
assert_equal(config["data_path"], data_dir)
config["data_path"] = data_dir
print(config) # __repr__
load_data_file("CONTRIBUTING.txt")
fid = open(op.join(data_dir, "test-faked.txt"), "w")
fid.close()
load_data_file("test-faked.txt") # this one shouldn't download
assert_raises(RuntimeError, load_data_file, "foo-nonexist.txt")
save_config()
finally:
if orig_val is not None:
os.environ["_VISPY_CONFIG_TESTING"] = orig_val
else:
del os.environ["_VISPY_CONFIG_TESTING"]
def test_context_properties():
"""Test setting context properties"""
a = use_app()
if a.backend_name.lower() == 'pyglet':
return # cannot set more than once on Pyglet
# stereo, double buffer won't work on every sys
configs = [dict(samples=4), dict(stencil_size=8),
dict(samples=4, stencil_size=8)]
if a.backend_name.lower() != 'glfw': # glfw *always* double-buffers
configs.append(dict(double_buffer=False, samples=4))
configs.append(dict(double_buffer=False))
else:
assert_raises(RuntimeError, Canvas, app=a,
config=dict(double_buffer=False))
if a.backend_name.lower() == 'sdl2' and os.getenv('TRAVIS') == 'true':
raise SkipTest('Travis SDL cannot set context')
for config in configs:
n_items = len(config)
with Canvas(config=config):
if 'true' in (os.getenv('TRAVIS', ''),
os.getenv('APPVEYOR', '').lower()):
# Travis and Appveyor cannot handle obtaining these values
props = config
else:
props = get_gl_configuration()
assert_equal(len(config), n_items)
for key, val in config.items():
# XXX knownfail for windows samples, and wx (all platforms)
if key == 'samples':
iswx = a.backend_name.lower() == 'wx'
if not (sys.platform.startswith('win') or iswx):
assert_equal(val, props[key], key)
assert_raises(TypeError, Canvas, config='foo')
assert_raises(KeyError, Canvas, config=dict(foo=True))
assert_raises(TypeError, Canvas, config=dict(double_buffer='foo'))
def test_FunctionChain():
f1 = Function("void f1(){}")
f2 = Function("void f2(){}")
f3 = Function("float f3(vec3 x){}")
f4 = Function("vec3 f4(vec3 y){}")
f5 = Function("vec3 f5(vec4 z){}")
ch = FunctionChain('chain', [f1, f2])
assert ch.name == 'chain'
assert ch.args == []
assert ch.rtype == 'void'
assert_in('f1', ch.compile())
assert_in('f2', ch.compile())
ch.remove(f2)
assert_not_in('f2', ch.compile())
ch.append(f2)
assert_in('f2', ch.compile())
ch = FunctionChain(funcs=[f5, f4, f3])
assert_equal('float', ch.rtype)
assert_equal([('vec4', 'z')], ch.args)
assert_in('f3', ch.compile())
assert_in('f4', ch.compile())
assert_in('f5', ch.compile())
assert_in(f3, ch.dependencies())
assert_in(f4, ch.dependencies())
assert_in(f5, ch.dependencies())
def test_use():
# Set default app to None, so we can test the use function
vispy.app.use_app()
default_app = vispy.app._default_app.default_app
vispy.app._default_app.default_app = None
app_name = default_app.backend_name.split(' ')[0]
try:
# With no arguments, should do nothing
assert_raises(TypeError, vispy.use)
assert_equal(vispy.app._default_app.default_app, None)
# With only gl args, should do nothing to app
vispy.use(gl='gl2')
assert_equal(vispy.app._default_app.default_app, None)
# Specify app (one we know works)
vispy.use(app_name)
assert_not_equal(vispy.app._default_app.default_app, None)
# Again, but now wrong app
wrong_name = 'glfw' if app_name.lower() != 'glfw' else 'pyqt4'
assert_raises(RuntimeError, vispy.use, wrong_name)
# And both
vispy.use(app_name, 'gl2')
finally:
# Restore
vispy.app._default_app.default_app = default_app
def test_FunctionCall():
fun = Function(transformScale)
fun['scale'] = '1.0'
fun2 = Function(transformZOffset)
# No args
assert_raises(TypeError, fun) # need 1 arg
assert_raises(TypeError, fun, 1, 2) # need 1 arg
call = fun('x')
# Test repr
exp = call.expression({fun: 'y'})
assert_equal(exp, 'y(x)')
# Test sig
assert len(call._args) == 1
# Test dependencies
assert_in(fun, call.dependencies())
assert_in(call._args[0], call.dependencies())
# More args
call = fun(fun2('foo'))
# Test repr
exp = call.expression({fun: 'y', fun2: 'z'})
assert_in('y(z(', exp)
# Test sig
assert len(call._args) == 1
call2 = call._args[0]
assert len(call2._args) == 1
# Test dependencies
assert_in(fun, call.dependencies())
assert_in(call._args[0], call.dependencies())
assert_in(fun2, call.dependencies())
assert_in(call2._args[0], call.dependencies())
def test_use_framebuffer():
"""Test drawing to a framebuffer"""
shape = (100, 300) # for some reason Windows wants a tall window...
data = np.random.rand(*shape).astype(np.float32)
use_shape = shape + (3,)
with Canvas(size=shape[::-1]) as c:
orig_tex = Texture2D(data)
fbo_tex = Texture2D(use_shape, format='rgb')
rbo = RenderBuffer(shape, 'color')
fbo = FrameBuffer(color=fbo_tex)
c.context.glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
set_viewport((0, 0) + c.size)
with fbo:
draw_texture(orig_tex)
draw_texture(fbo_tex)
out_tex = _screenshot()[::-1, :, 0].astype(np.float32)
assert_equal(out_tex.shape, c.size[::-1])
assert_raises(TypeError, FrameBuffer.color_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.depth_buffer.fset, fbo, 1.)
assert_raises(TypeError, FrameBuffer.stencil_buffer.fset, fbo, 1.)
fbo.color_buffer = rbo
fbo.depth_buffer = RenderBuffer(shape)
fbo.stencil_buffer = None
print((fbo.color_buffer, fbo.depth_buffer, fbo.stencil_buffer))
clear(color='black')
with fbo:
clear(color='black')
draw_texture(orig_tex)
out_rbo = _screenshot()[:, :, 0].astype(np.float32)
assert_allclose(data * 255., out_tex, atol=1)
assert_allclose(data * 255., out_rbo, atol=1)
def test_event_order():
"""Test event order"""
x = list()
class MyCanvas(Canvas):
def on_initialize(self, event):
x.append('init')
def on_draw(self, event):
sz = True if self.size is not None else False
x.append('draw size=%s show=%s' % (sz, show))
def on_close(self, event):
x.append('close')
for show in (False, True):
# clear our storage variable
while x:
x.pop()
with MyCanvas(show=show) as c:
c.update()
c.app.process_events()
print(x)
assert_true(len(x) >= 3)
assert_equal(x[0], 'init')
assert_in('draw size=True', x[1])
assert_in('draw size=True', x[-2])
assert_equal(x[-1], 'close')
def test_serialize_command():
command = ('CREATE', 4, 'VertexBuffer')
command_serialized = _serialize_command(command)
assert_equal(command_serialized, list(command))
command = ('UNIFORM', 4, 'u_scale', 'vec3', (1, 2, 3))
commands_serialized_expected = ['UNIFORM', 4, 'u_scale', 'vec3', [1, 2, 3]]
command_serialized = _serialize_command(command)
assert_equal(command_serialized, commands_serialized_expected)
def test_use_uniforms():
"""Test using uniform arrays"""
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
varying vec2 v_pos;
uniform vec3 u_color[2];
void main()
{
gl_FragColor = vec4((u_color[0] + u_color[1]) / 2., 1.);
}
"""
shape = (500, 500)
with Canvas(size=shape) as c:
c.set_current()
c.context.glir.set_verbose(True)
assert_equal(c.size, shape[::-1])
shape = (3, 3)
set_viewport((0, 0) + shape)
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
program['u_color'] = np.ones((2, 3))
c.context.clear('k')
c.set_current()
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., np.ones(shape), atol=1. / 255.)
# now set one element
program['u_color[1]'] = np.zeros(3, np.float32)
c.context.clear('k')
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., 127.5 / 255. * np.ones(shape),
atol=1. / 255.)
# and the other
assert_raises(ValueError, program.__setitem__, 'u_color',
np.zeros(3, np.float32))
program['u_color'] = np.zeros((2, 3), np.float32)
program['u_color[0]'] = np.ones(3, np.float32)
c.context.clear((0.33,) * 3)
program.draw('triangle_strip')
out = _screenshot()
assert_allclose(out[:, :, 0] / 255., 127.5 / 255. * np.ones(shape),
atol=1. / 255.)
def test_key():
"""Test basic key functionality"""
def bad():
return (ENTER == dict())
assert_raises(ValueError, bad)
assert_true(not (ENTER == None)) # noqa
assert_equal('Return', ENTER)
print(ENTER.name)
print(ENTER) # __repr__
assert_equal(Key('1'), 49) # ASCII code
def test_close_keys():
"""Test close keys"""
c = Canvas(keys='interactive')
x = list()
@c.events.close.connect
def closer(event):
x.append('done')
c.events.key_press(key=keys.ESCAPE, text='', modifiers=[])
assert_equal(len(x), 1) # ensure the close event was sent
c.app.process_events()
def test_create_glir_message_binary():
arr = np.zeros((3, 2)).astype(np.float32)
arr2 = np.ones((4, 5)).astype(np.int16)
commands = [('CREATE', 1, 'VertexBuffer'),
('UNIFORM', 2, 'u_scale', 'vec3', (1, 2, 3)),
('DATA', 3, 0, arr),
('UNIFORM', 4, 'u_pan', 'vec2', np.array([1, 2, 3])),
('DATA', 5, 20, arr2)]
msg = create_glir_message(commands)
assert_equal(msg['msg_type'], 'glir_commands')
commands_serialized = msg['commands']
assert_equal(commands_serialized,
[['CREATE', 1, 'VertexBuffer'],
['UNIFORM', 2, 'u_scale', 'vec3', [1, 2, 3]],
['DATA', 3, 0, {'buffer_index': 0,
'buffer_shape': [3, 2],
'buffer_dtype': 'float32'}],
['UNIFORM', 4, 'u_pan', 'vec2', [1, 2, 3]],
['DATA', 5, 20, {'buffer_index': 1,
'buffer_shape': [4, 5],
'buffer_dtype': 'int16'}]])
buffers_serialized = msg['buffers']
buf0 = buffers_serialized[0]
assert_equal(buf0, b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00') # noqa
buf1 = buffers_serialized[1]
assert_equal(buf1, b'\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00') # noqa
def test_import_vispy_scene():
""" Importing vispy.gloo.gl.desktop should not import PyOpenGL. """
modnames = loaded_vispy_modules("vispy.scene", 2)
more_modules = [
"vispy.app",
"vispy.gloo",
"vispy.glsl",
"vispy.scene",
"vispy.color",
"vispy.io",
"vispy.geometry",
"vispy.visuals",
]
assert_equal(modnames, set(_min_modules + more_modules))
def test_logging():
"""Test logging context manager"""
ll = logger.level
with use_log_level('warning', print_msg=False):
assert_equal(logger.level, logging.WARN)
assert_equal(logger.level, ll)
with use_log_level('debug', print_msg=False):
assert_equal(logger.level, logging.DEBUG)
assert_equal(logger.level, ll)
def test_wavefront():
"""Test wavefront reader"""
fname_mesh = load_data_file('orig/triceratops.obj.gz')
fname_out = op.join(temp_dir, 'temp.obj')
mesh1 = read_mesh(fname_mesh)
assert_raises(IOError, read_mesh, 'foo.obj')
assert_raises(ValueError, read_mesh, op.abspath(__file__))
assert_raises(ValueError, write_mesh, fname_out, *mesh1, format='foo')
write_mesh(fname_out, mesh1[0], mesh1[1], mesh1[2], mesh1[3])
assert_raises(IOError, write_mesh, fname_out, *mesh1)
write_mesh(fname_out, *mesh1, overwrite=True)
mesh2 = read_mesh(fname_out)
assert_equal(len(mesh1), len(mesh2))
for m1, m2 in zip(mesh1, mesh2):
if m1 is None:
assert_equal(m2, None)
else:
assert_allclose(m1, m2, rtol=1e-5)
# test our efficient normal calculation routine
assert_allclose(mesh1[2], _slow_calculate_normals(mesh1[0], mesh1[1]),
rtol=1e-7, atol=1e-7)
def test_transforms():
"""Test basic transforms"""
xfm = np.random.randn(4, 4).astype(np.float32)
# Do a series of rotations that should end up into the same orientation
# again, to ensure the order of computation is all correct
# i.e. if rotated would return the transposed matrix this would not work
# out (the translation part would be incorrect)
new_xfm = xfm.dot(rotate(180, (1, 0, 0)).dot(rotate(-90, (0, 1, 0))))
new_xfm = new_xfm.dot(rotate(90, (0, 0, 1)).dot(rotate(90, (0, 1, 0))))
new_xfm = new_xfm.dot(rotate(90, (1, 0, 0)))
assert_allclose(xfm, new_xfm)
new_xfm = translate((1, -1, 1)).dot(translate((-1, 1, -1))).dot(xfm)
assert_allclose(xfm, new_xfm)
new_xfm = scale((1, 2, 3)).dot(scale((1, 1. / 2., 1. / 3.))).dot(xfm)
assert_allclose(xfm, new_xfm)
# These could be more complex...
xfm = ortho(-1, 1, -1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
xfm = frustum(-1, 1, -1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
xfm = perspective(1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
def test_context_config():
""" Test GLContext handling of config dict
"""
default_config = get_default_config()
# Pass default config unchanged
c = GLContext(default_config)
assert_equal(c.config, default_config)
# Must be deep copy
c.config['double_buffer'] = False
assert_not_equal(c.config, default_config)
# Passing nothing should yield default config
c = GLContext()
assert_equal(c.config, default_config)
# Must be deep copy
c.config['double_buffer'] = False
assert_not_equal(c.config, default_config)
# This should work
c = GLContext({'red_size': 4, 'double_buffer': False})
assert_equal(c.config.keys(), default_config.keys())
# Passing crap should raise
assert_raises(KeyError, GLContext, {'foo': 3})
assert_raises(TypeError, GLContext, {'double_buffer': 'not_bool'})
def test_transforms():
"""Test basic transforms"""
xfm = np.random.randn(4, 4).astype(np.float32)
for rot in [xrotate, yrotate, zrotate]:
new_xfm = rot(rot(xfm, 90), -90)
assert_allclose(xfm, new_xfm)
new_xfm = rotate(rotate(xfm, 90, 1, 0, 0), 90, -1, 0, 0)
assert_allclose(xfm, new_xfm)
new_xfm = translate(translate(xfm, 1, -1), 1, -1, 1)
assert_allclose(xfm, new_xfm)
new_xfm = scale(scale(xfm, 1, 2, 3), 1, 1. / 2., 1. / 3.)
assert_allclose(xfm, new_xfm)
# These could be more complex...
xfm = ortho(-1, 1, -1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
xfm = frustum(-1, 1, -1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
xfm = perspective(1, 1, -1, 1)
assert_equal(xfm.shape, (4, 4))
def test_color_conversion():
"""Test color conversions"""
# HSV
# test known values
test = ColorArray()
for key in hsv_dict:
c = ColorArray(key)
test.hsv = hsv_dict[key]
assert_allclose(c.RGB, test.RGB, atol=1)
test.value = 0
assert_equal(test.value, 0)
assert_equal(test, ColorArray('black'))
c = ColorArray('black')
assert_array_equal(c.hsv.ravel(), (0, 0, 0))
rng = np.random.RandomState(0)
for _ in range(50):
hsv = rng.rand(3)
hsv[0] *= 360
hsv[1] = hsv[1] * 0.99 + 0.01 # avoid ugly boundary effects
hsv[2] = hsv[2] * 0.99 + 0.01
c.hsv = hsv
assert_allclose(c.hsv.ravel(), hsv, rtol=1e-4, atol=1e-4)
# Lab
test = ColorArray()
for key in lab_dict:
c = ColorArray(key)
test.lab = lab_dict[key]
assert_allclose(c.rgba, test.rgba, atol=1e-4, rtol=1e-4)
assert_allclose(test.lab.ravel(), lab_dict[key], atol=1e-4, rtol=1e-4)
for _ in range(50):
# boundaries can have ugly rounding errors in some parameters
rgb = (rng.rand(3)[np.newaxis, :] * 0.9 + 0.05)
c.rgb = rgb
lab = c.lab
c.lab = lab
assert_allclose(c.lab, lab, atol=1e-4, rtol=1e-4)
assert_allclose(c.rgb, rgb, atol=1e-4, rtol=1e-4)
def test_read_pixels():
"""Test read_pixels to ensure that the image is not flipped"""
# Create vertices
vPosition = np.array([[-1, 1], [0, 1], # For drawing a square to top left
[-1, 0], [0, 0]], np.float32)
VERT_SHADER = """ // simple vertex shader
attribute vec2 a_position;
void main (void) {
gl_Position = vec4(a_position, 0., 1.0);
}
"""
FRAG_SHADER = """ // simple fragment shader
void main()
{
gl_FragColor = vec4(1,1,1,1);
}
"""
with Canvas() as c:
gloo.set_viewport(0, 0, *c.size)
c._program = gloo.Program(VERT_SHADER, FRAG_SHADER)
c._program['a_position'] = gloo.VertexBuffer(vPosition)
gloo.clear(color='black')
c._program.draw('triangle_strip')
# Check if the return of read_pixels is the same as our drawing
img = read_pixels(alpha=False)
assert_equal(img.shape[:2], c.size[::-1])
top_left = sum(img[0, 0])
assert_true(top_left > 0) # Should be > 0 (255*4)
# Sum of the pixels in top right + bottom left + bottom right corners
corners = sum(img[0, -1] + img[-1, 0] + img[-1, -1])
assert_true(corners == 0) # Should be all 0
gloo.flush()
gloo.finish()
def test_wrappers():
"""Test gloo wrappers"""
with Canvas():
gl.use_gl('gl2 debug')
gloo.clear('#112233') # make it so that there's something non-zero
# check presets
assert_raises(ValueError, gloo.set_state, preset='foo')
for state in gloo.get_state_presets().keys():
gloo.set_state(state)
assert_raises(ValueError, gloo.set_blend_color, (0., 0.)) # bad color
assert_raises(TypeError, gloo.set_hint, 1, 2) # need strs
# this doesn't exist in ES 2.0 namespace
assert_cmd_raises(ValueError, gloo.set_hint, 'fog_hint', 'nicest')
# test bad enum
assert_raises(RuntimeError, gloo.set_line_width, -1)
# check read_pixels
x = gloo.read_pixels()
assert_true(isinstance(x, np.ndarray))
assert_true(isinstance(gloo.read_pixels((0, 0, 1, 1)), np.ndarray))
assert_raises(ValueError, gloo.read_pixels, (0, 0, 1)) # bad port
y = gloo.read_pixels(alpha=False, out_type=np.ubyte)
assert_equal(y.shape, x.shape[:2] + (3,))
assert_array_equal(x[..., :3], y)
y = gloo.read_pixels(out_type='float')
assert_allclose(x/255., y)
# now let's (indirectly) check our set_* functions
viewport = (0, 0, 1, 1)
blend_color = (0., 0., 0.)
_funs = dict(viewport=viewport, # checked
hint=('generate_mipmap_hint', 'nicest'),
depth_range=(1., 2.),
front_face='cw', # checked
cull_face='front',
line_width=1.,
polygon_offset=(1., 1.),
blend_func=('zero', 'one'),
blend_color=blend_color,
blend_equation='func_add',
scissor=(0, 0, 1, 1),
stencil_func=('never', 1, 2, 'back'),
stencil_mask=4,
stencil_op=('zero', 'zero', 'zero', 'back'),
depth_func='greater',
depth_mask=True,
color_mask=(True, True, True, True),
sample_coverage=(0.5, True))
gloo.set_state(**_funs)
gloo.clear((1., 1., 1., 1.), 0.5, 1)
gloo.flush()
gloo.finish()
# check some results
assert_array_equal(gl.glGetParameter(gl.GL_VIEWPORT), viewport)
assert_equal(gl.glGetParameter(gl.GL_FRONT_FACE), gl.GL_CW)
assert_equal(gl.glGetParameter(gl.GL_BLEND_COLOR), blend_color + (1,))
def test_use_texture3D():
"""Test using a 3D texture"""
vals = [0, 200, 100, 0, 255, 0, 100]
d, h, w = len(vals), 3, 5
data = np.zeros((d, h, w), np.float32)
VERT_SHADER = """
attribute vec2 a_pos;
varying vec2 v_pos;
void main (void)
{
v_pos = a_pos;
gl_Position = vec4(a_pos, 0., 1.);
}
"""
FRAG_SHADER = """
uniform sampler3D u_texture;
varying vec2 v_pos;
uniform float i;
void main()
{
gl_FragColor = texture3D(u_texture,
vec3((v_pos.y+1.)/2., (v_pos.x+1.)/2., i));
gl_FragColor.a = 1.;
}
"""
# populate the depth "slices" with different gray colors in the bottom left
for ii, val in enumerate(vals):
data[ii, :2, :3] = val / 255.
with Canvas(size=(100, 100)) as c:
if not has_pyopengl():
t = Texture3D(data)
assert_raises(ImportError, t.glir.flush, c.context.shared.parser)
return
program = Program(VERT_SHADER, FRAG_SHADER)
program['a_pos'] = [[-1., -1.], [1., -1.], [-1., 1.], [1., 1.]]
tex = Texture3D(data, interpolation='nearest')
assert_equal(tex.width, w)
assert_equal(tex.height, h)
assert_equal(tex.depth, d)
program['u_texture'] = tex
for ii, val in enumerate(vals):
set_viewport(0, 0, w, h)
clear(color='black')
iii = (ii + 0.5) / float(d)
print(ii, iii)
program['i'] = iii
program.draw('triangle_strip')
out = _screenshot()[:, :, 0].astype(int)[::-1]
expected = np.zeros_like(out)
expected[:2, :3] = val
assert_allclose(out, expected, atol=1./255.)
def test_fs():
"""Test fullscreen support"""
a = use_app()
if not a.backend_module.capability['fullscreen']:
return
assert_raises(TypeError, Canvas, fullscreen='foo')
if (a.backend_name.lower() == 'glfw' or
(a.backend_name.lower() == 'sdl2' and sys.platform == 'darwin')):
raise SkipTest('Backend takes over screen')
with use_log_level('warning', record=True, print_msg=False) as emit_list:
with Canvas(fullscreen=False) as c:
assert_equal(c.fullscreen, False)
c.fullscreen = True
assert_equal(c.fullscreen, True)
assert_equal(len(emit_list), 0)
with use_log_level('warning', record=True, print_msg=False):
# some backends print a warning b/c fullscreen can't be specified
with Canvas(fullscreen=0) as c:
assert_equal(c.fullscreen, True)
def test_debug_logging():
"""Test advanced debugging logging"""
with use_log_level('debug', 'Selected', True, False) as l:
logger.debug('Selected foo')
assert_equal(len(l), 1)
assert_in('test_logging', l[0]) # can't really parse this location
with use_log_level('debug', record=True, print_msg=False) as l:
logger.debug('foo')
assert_equal(len(l), 1)
assert_in('test_logging', l[0])
with use_log_level('debug', 'foo', True, False) as l:
logger.debug('bar')
assert_equal(len(l), 0)
with use_log_level('info', record=True, print_msg=False) as l:
logger.debug('foo')
logger.info('bar')
assert_equal(len(l), 1)
assert_not_in('unknown', l[0])
def _test_fbo():
w, h = 120, 130
# Create frame buffer
hframebuf = gl.glCreateFramebuffer()
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, hframebuf)
#Create render buffer (for depth)
hrenderbuf = gl.glCreateRenderbuffer()
gl.glBindRenderbuffer(gl.GL_RENDERBUFFER, hrenderbuf)
gl.glRenderbufferStorage(gl.GL_RENDERBUFFER, gl.GL_DEPTH_COMPONENT16, w, h)
gl.glFramebufferRenderbuffer(gl.GL_FRAMEBUFFER, gl.GL_DEPTH_ATTACHMENT,
gl.GL_RENDERBUFFER, hrenderbuf)
# Create texture (for color)
htex = gl.glCreateTexture()
gl.glBindTexture(gl.GL_TEXTURE_2D, htex)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, gl.GL_RGB,
gl.GL_UNSIGNED_BYTE, (h, w))
gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0,
gl.GL_TEXTURE_2D, htex, 0)
# Check framebuffer status
status = gl.glCheckFramebufferStatus(gl.GL_FRAMEBUFFER)
assert_equal(status, gl.GL_FRAMEBUFFER_COMPLETE)
# Tests renderbuffer params
name = gl.glGetFramebufferAttachmentParameter(
gl.GL_FRAMEBUFFER, gl.GL_DEPTH_ATTACHMENT,
gl.GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME)
assert_equal(name, hrenderbuf)
#
width = gl.glGetRenderbufferParameter(gl.GL_RENDERBUFFER,
gl.GL_RENDERBUFFER_WIDTH)
assert_equal(width, w)
# Touch copy tex functions
gl.glBindTexture(gl.GL_TEXTURE_2D, htex)
gl.glCopyTexSubImage2D(gl.GL_TEXTURE_2D, 0, 5, 5, 5, 5, 20, 20)
gl.glCopyTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, 0, 0, 30, 30, 0)
gl.check_error()
# Clean up
gl.glDeleteTexture(htex)
gl.glDeleteRenderbuffer(hrenderbuf)
gl.glDeleteFramebuffer(hframebuf)
gl.check_error()
def test_color():
"""Basic tests for Color class"""
x = Color('white')
assert_array_equal(x.rgba, [1.] * 4)
assert_array_equal(x.rgb, [1.] * 3)
assert_array_equal(x.RGBA, [255] * 4)
assert_array_equal(x.RGB, [255] * 3)
assert_equal(x.value, 1.)
assert_equal(x.alpha, 1.)
x.rgb = [0, 0, 1]
assert_array_equal(x.hsv, [240, 1, 1])
assert_equal(x.hex, '#0000ff')
x.hex = '#00000000'
assert_array_equal(x.rgba, [0.]*4)
def _check_result(assert_result=True):
""" Test the color of each quadrant by picking the center pixel
of each quadrant and comparing it with the reference color.
"""
# Take screenshot
x, y, w, h = gl.glGetParameter(gl.GL_VIEWPORT)
data = gl.glReadPixels(x, y, w, h, gl.GL_RGB, gl.GL_UNSIGNED_BYTE)
im = np.frombuffer(data, np.uint8)
im.shape = h, w, 3
# Get center pixel from each quadrant
pix1 = tuple(im[int(1*h/4), int(1*w/4)])
pix2 = tuple(im[int(3*h/4), int(1*w/4)])
pix3 = tuple(im[int(3*h/4), int(3*w/4)])
pix4 = tuple(im[int(1*h/4), int(3*w/4)])
#print(pix1, pix2, pix3, pix4)
if assert_result:
# Test their value
assert_equal(pix1, (0, 0, 0))
assert_equal(pix2, (255, 0, 0))
assert_equal(pix3, (0, 255, 0))
assert_equal(pix4, (0, 0, 255))
def _test_setting_parameters():
# Set some parameters and get result
clr = 1.0, 0.1, 0.2, 0.7
gl.glClearColor(*clr)
assert_almost_equal(gl.glGetParameter(gl.GL_COLOR_CLEAR_VALUE), clr)
#
gl.glCullFace(gl.GL_FRONT)
assert_equal(gl.glGetParameter(gl.GL_CULL_FACE_MODE), gl.GL_FRONT)
gl.glCullFace(gl.GL_BACK)
assert_equal(gl.glGetParameter(gl.GL_CULL_FACE_MODE), gl.GL_BACK)
#
gl.glDepthFunc(gl.GL_NOTEQUAL)
assert_equal(gl.glGetParameter(gl.GL_DEPTH_FUNC), gl.GL_NOTEQUAL)
#
val = 0.2, 0.3
gl.glDepthRange(*val)
assert_almost_equal(gl.glGetParameter(gl.GL_DEPTH_RANGE), val)
gl.check_error()
def _test_enabling_disabling():
# Enabling/disabling
gl.glEnable(gl.GL_DEPTH_TEST)
assert_equal(gl.glIsEnabled(gl.GL_DEPTH_TEST), True)
assert_equal(gl.glGetParameter(gl.GL_DEPTH_TEST), 1)
gl.glDisable(gl.GL_DEPTH_TEST)
assert_equal(gl.glIsEnabled(gl.GL_DEPTH_TEST), False)
assert_equal(gl.glGetParameter(gl.GL_DEPTH_TEST), 0)
#
gl.glEnable(gl.GL_BLEND)
assert_equal(gl.glIsEnabled(gl.GL_BLEND), True)
assert_equal(gl.glGetParameter(gl.GL_BLEND), 1)
gl.glDisable(gl.GL_BLEND)
assert_equal(gl.glIsEnabled(gl.GL_BLEND), False)
assert_equal(gl.glGetParameter(gl.GL_BLEND), 0)
gl.check_error()
def test_import_vispy_util():
"""Importing vispy.util should not pull in other vispy submodules."""
modnames = loaded_vispy_modules('vispy.util', 2)
assert_equal(modnames, set(_min_modules))
def test_Variable():
# Test init fail
assert_raises(TypeError, Variable) # no args
assert_raises(TypeError, Variable, 3) # wrong type
assert_raises(TypeError, Variable, "name", "str") # wrong type
assert_raises(ValueError, Variable, 'bla bla') # need correct vtype
assert_raises(ValueError, Variable, 'uniform b l a') # too many
# Test init success
var = Variable('uniform float bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'float')
assert_equal(var.vtype, 'uniform')
assert var.value is None
# test assign new value
var.value = 10.
assert_equal(var.dtype, 'float') # type is locked; won't change
# test name-only init
var = Variable('bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, None)
assert_equal(var.vtype, None)
assert var.value is None
# test assign new value
var.value = 10
assert_equal(var.dtype, 'int')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, 10)
# test init with value
var = Variable('bla', (1, 2, 3)) # Also valid
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'vec3')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, (1, 2, 3))
# Test value
# var = Variable('uniform float bla', data) # Also valid
# assert_equal(var.value, data)
# var.value = 3
# assert_equal(var.value, 3)
# Test repr
var = Variable('uniform float bla')
assert_in('uniform float bla', var.compile())
# Test injection, definition, dependencies
assert_equal(var.expression({var: 'xxx'}), 'xxx')
assert_equal(var.definition({var: 'xxx'}, ('120', ''), None),
'uniform float xxx;')
assert_in(var, var.dependencies())
# Renaming
var = Variable('uniform float bla')
assert_equal(var.name, 'bla')
var.name = 'foo'
assert_equal(var.name, 'foo')
def test_event_connect_order():
"""Test event connection order"""
def a():
return
def b():
return
def c():
return
def d():
return
def e():
return
def f():
return
em = EventEmitter(type='test_event')
assert_raises(ValueError, em.connect, c, before=['c', 'foo'])
assert_raises(ValueError, em.connect, c, position='foo')
assert_raises(TypeError, em.connect, c, ref=dict())
em.connect(c, ref=True)
assert_equal((c,), tuple(em.callbacks))
em.connect(c)
assert_equal((c,), tuple(em.callbacks))
em.connect(d, ref=True, position='last')
assert_equal((c, d), tuple(em.callbacks))
em.connect(b, ref=True) # position='first'
assert_equal((b, c, d), tuple(em.callbacks))
assert_raises(RuntimeError, em.connect, a, before='c', after='d') # can't
em.connect(a, ref=True, before=['c', 'd']) # first possible pos == 0
assert_equal((a, b, c, d), tuple(em.callbacks))
em.connect(f, ref=True, after=['c', 'd'])
assert_equal((a, b, c, d, f), tuple(em.callbacks))
em.connect(e, ref=True, after='d', before='f')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref=True, after='a', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref='e', after='d', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, after='d', before='f', position='first') # no name
assert_equal(('a', 'b', 'c', 'd', None, 'f'), tuple(em.callback_refs))
em.disconnect(e)
assert_raises(ValueError, em.connect, e, ref='d') # duplicate name
em.connect(e, ref=True, after=[], before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((a, b, c, d, e, f), tuple(em.callbacks))
old_e = e
def e():
return
assert_raises(ValueError, em.connect, e, ref=True) # duplicate name
em.connect(e)
assert_equal((None, 'a', 'b', 'c', 'd', 'e', 'f'),
tuple(em.callback_refs))
assert_equal((e, a, b, c, d, old_e, f), tuple(em.callbacks))
def test_TextExpression():
exp = TextExpression('foo bar')
assert_equal('foo bar', exp.expression(None))
assert_equal(None, exp.definition(None, ('120', '')))
assert_raises(TypeError, TextExpression, 4)
def test_function_basics():
# Test init fail
assert_raises(TypeError, Function) # no args
assert_raises(ValueError, Function, 3) # need string
# Test init success 1
fun = Function('void main(){}')
assert_equal(fun.name, 'main')
assert len(fun.template_vars) == 0
# Test init success with template vars
fun = Function('void main(){$foo; $bar;}')
assert_equal(fun.name, 'main')
assert len(fun.template_vars) == 2
assert_in('foo', fun.template_vars)
assert_in('bar', fun.template_vars)
# Test setting verbatim expressions
assert_raises(KeyError, fun.__setitem__, 'bla', '33') # no such template
fun['foo'] = '33'
fun['bar'] = 'bla bla'
assert_is(type(fun['foo']), TextExpression)
assert_equal(fun['foo'].expression(None), '33')
assert_is(type(fun['bar']), TextExpression)
assert_equal(fun['bar'].expression(None), 'bla bla')
# Test setting call expressions
fun = Function('void main(){\n$foo;\n$bar;\n$spam(XX);\n$eggs(YY);\n}')
trans = Function('float transform_scale(float x) {return x+1.0;}')
assert_raises(TypeError, trans) # requires 1 arg
assert_raises(TypeError, trans, '1', '2')
fun['foo'] = trans('2')
fun['bar'] = trans('3')
fun['spam'] = trans
fun['eggs'] = trans
#
for name in ['foo', 'bar']:
assert_is(type(fun[name]), FunctionCall)
assert_equal(fun[name].function, trans)
assert_in(trans, fun.dependencies())
for name in ['spam', 'eggs']:
assert_equal(fun[name], trans)
#
text = fun.compile()
assert_in('\ntransform_scale(2);\n', text)
assert_in('\ntransform_scale(3);\n', text)
assert_in('\ntransform_scale(XX);\n', text)
assert_in('\ntransform_scale(YY);\n', text)
# test pre/post assignments
fun = Function('void main() {some stuff;}')
fun['pre'] = '__pre__'
fun['post'] = '__post__'
text = fun.compile()
assert text == 'void main() {\n __pre__\nsome stuff;\n __post__\n}\n'
# Test variable expressions
fun = Function('void main(){$foo; $bar;}')
fun['foo'] = Variable('uniform float bla')
fun['bar'] = Variable('attribute float bla')
assert_is(type(fun['foo']), Variable)
assert_is(type(fun['bar']), Variable)
assert_in(fun['foo'], fun.dependencies())
assert_in(fun['bar'], fun.dependencies())
# Test special variables
fun = Function('void main(){$foo; $bar;}')
variable = Variable('attribute vec3 v_pos')
varying = Variable('varying vec3 color')
# These do not work due to index
assert_raises(TypeError, fun.__setitem__, 3, 3) # not a string
assert_raises(KeyError, fun.__setitem__, 'xxx', 3) # unknown template var
assert_raises(TypeError, fun.__setitem__, variable, 3) # only varyings
# These work
fun['gl_PointSize'] = '3.0'
fun[varying] = variable
# And getting works
assert_equal(fun['gl_PointSize'].text, '3.0')
assert_equal(fun[varying], variable)
def _prepare_vis():
objects = []
# --- program and shaders
# Create program and shaders
hprog = gl.glCreateProgram()
hvert = gl.glCreateShader(gl.GL_VERTEX_SHADER)
hfrag = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
objects.append((gl.glDeleteProgram, hprog))
objects.append((gl.glDeleteShader, hvert))
objects.append((gl.glDeleteShader, hfrag))
# Compile source code
gl.glShaderSource(hvert, VERT)
gl.glShaderSource(hfrag, FRAG)
gl.glCompileShader(hvert)
gl.glCompileShader(hfrag)
# Check
assert_equal(gl.glGetShaderInfoLog(hvert), '')
assert_equal(gl.glGetShaderInfoLog(hfrag), '')
assert_equal(gl.glGetShaderParameter(hvert, gl.GL_COMPILE_STATUS), 1)
assert_equal(gl.glGetShaderParameter(hfrag, gl.GL_COMPILE_STATUS), 1)
# Attach and link
gl.glAttachShader(hprog, hvert)
gl.glAttachShader(hprog, hfrag)
# touch glDetachShader
gl.glDetachShader(hprog, hvert)
gl.glAttachShader(hprog, hvert)
gl.glLinkProgram(hprog)
# Test that indeed these shaders are attached
attached_shaders = gl.glGetAttachedShaders(hprog)
assert_equal(set(attached_shaders), set([hvert, hfrag]))
# Check
assert_equal(gl.glGetProgramInfoLog(hprog), '')
assert_equal(gl.glGetProgramParameter(hprog, gl.GL_LINK_STATUS), 1)
gl.glValidateProgram(hprog)
assert_equal(gl.glGetProgramParameter(hprog, gl.GL_VALIDATE_STATUS), 1)
# Use it!
gl.glUseProgram(hprog)
# Bind one attribute
gl.glBindAttribLocation(hprog, 1, 'a_2')
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# Check source
vert_source = gl.glGetShaderSource(hvert)
assert_true('attribute vec2 a_2;' in vert_source)
# --- get information on attributes and uniforms
# Count attribbutes and uniforms
natt = gl.glGetProgramParameter(hprog, gl.GL_ACTIVE_ATTRIBUTES)
nuni = gl.glGetProgramParameter(hprog, gl.GL_ACTIVE_UNIFORMS)
assert_equal(natt, 4)
assert_equal(nuni, 4 + 4 + 3 + 1)
# Get names
names = {}
for i in range(natt):
name, count, type = gl.glGetActiveAttrib(hprog, i)
names[name] = type
assert_equal(count, 1)
for i in range(nuni):
name, count, type = gl.glGetActiveUniform(hprog, i)
names[name] = type
assert_equal(count, 1)
# Check
assert_equal(names['a_1'], gl.GL_FLOAT)
assert_equal(names['a_2'], gl.GL_FLOAT_VEC2)
assert_equal(names['a_3'], gl.GL_FLOAT_VEC3)
assert_equal(names['a_4'], gl.GL_FLOAT_VEC4)
assert_equal(names['s_1'], gl.GL_SAMPLER_2D)
#
for i, type in enumerate(
[gl.GL_FLOAT, gl.GL_FLOAT_VEC2, gl.GL_FLOAT_VEC3, gl.GL_FLOAT_VEC4]):
assert_equal(names['u_f%i' % (i + 1)], type)
for i, type in enumerate(
[gl.GL_INT, gl.GL_INT_VEC2, gl.GL_INT_VEC3, gl.GL_INT_VEC4]):
assert_equal(names['u_i%i' % (i + 1)], type)
for i, type in enumerate(
[gl.GL_FLOAT_MAT2, gl.GL_FLOAT_MAT3, gl.GL_FLOAT_MAT4]):
assert_equal(names['u_m%i' % (i + 2)], type)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- texture
# Create, bind, activate
htex = gl.glCreateTexture()
objects.append((gl.glDeleteTexture, htex))
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
gl.glBindTexture(gl.GL_TEXTURE_2D, htex)
# Allocate data and upload
# This data is luminance and not C-contiguous
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_LUMINANCE, gl.GL_LUMINANCE,
gl.GL_UNSIGNED_BYTE, im2) # touch
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_LUMINANCE, gl.GL_LUMINANCE,
gl.GL_UNSIGNED_BYTE, im2.shape[:2])
gl.glTexSubImage2D(gl.GL_TEXTURE_2D, 0, 0, 0, gl.GL_LUMINANCE,
gl.GL_UNSIGNED_BYTE, im2)
# Set texture parameters (use f and i to touch both)
T = gl.GL_TEXTURE_2D
gl.glTexParameterf(T, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameteri(T, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
# Re-allocate data and upload
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, gl.GL_RGB,
gl.GL_UNSIGNED_BYTE, im1.shape[:2])
gl.glTexSubImage2D(gl.GL_TEXTURE_2D, 0, 0, 0, gl.GL_RGB,
gl.GL_UNSIGNED_BYTE, im1)
# Attach!
loc = gl.glGetUniformLocation(hprog, 's_1')
unit = 0
gl.glActiveTexture(gl.GL_TEXTURE0 + unit)
gl.glUniform1i(loc, unit)
# Mipmaps (just to touch this function)
gl.glGenerateMipmap(gl.GL_TEXTURE_2D)
# Check min filter (touch getTextParameter)
minfilt = gl.glGetTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER)
assert_equal(minfilt, gl.GL_LINEAR)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- buffer vec2 (contiguous VBO)
# Create buffer
hbuf2 = gl.glCreateBuffer()
objects.append((gl.glDeleteBuffer, hbuf2))
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, hbuf2)
# Allocate and set data
gl.glBufferData(gl.GL_ARRAY_BUFFER, buf2.nbytes, gl.GL_DYNAMIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, buf2)
# Attach!
loc = gl.glGetAttribLocation(hprog, 'a_2')
gl.glDisableVertexAttribArray(loc) # touch
gl.glEnableVertexAttribArray(loc)
gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, 2 * 4, 0)
# Check (touch glGetBufferParameter, glGetVertexAttrib and
# glGetVertexAttribOffset)
size = gl.glGetBufferParameter(gl.GL_ARRAY_BUFFER, gl.GL_BUFFER_SIZE)
assert_equal(size, buf2.nbytes)
stride = gl.glGetVertexAttrib(loc, gl.GL_VERTEX_ATTRIB_ARRAY_STRIDE)
assert_equal(stride, 2 * 4)
offset = gl.glGetVertexAttribOffset(loc, gl.GL_VERTEX_ATTRIB_ARRAY_POINTER)
assert_equal(offset, 0)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- buffer vec3 (non-contiguous VBO)
# Create buffer
hbuf3 = gl.glCreateBuffer()
objects.append((gl.glDeleteBuffer, hbuf3))
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, hbuf3)
# Allocate and set data
gl.glBufferData(gl.GL_ARRAY_BUFFER, buf3.nbytes, gl.GL_DYNAMIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, buf3)
# Attach!
loc = gl.glGetAttribLocation(hprog, 'a_3')
gl.glEnableVertexAttribArray(loc)
gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 3 * 4, 0)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- buffer vec4 (client vertex data)
# Select no FBO
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
# Attach!
loc = gl.glGetAttribLocation(hprog, 'a_4')
gl.glEnableVertexAttribArray(loc)
gl.glVertexAttribPointer(loc, 4, gl.GL_FLOAT, False, 4 * 4, buf4)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- element buffer
# Create buffer
global helements
helements = gl.glCreateBuffer()
objects.append((gl.glDeleteBuffer, helements))
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, helements)
# Allocate and set data
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, elements, gl.GL_DYNAMIC_DRAW)
gl.glBufferSubData(gl.GL_ELEMENT_ARRAY_BUFFER, 0, elements)
# Turn off
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, 0)
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- uniforms
# Set integer uniforms to 0
# We set them twice just to touch both i and iv functions
for i, fun1, fun2 in [(1, gl.glUniform1i, gl.glUniform1iv),
(2, gl.glUniform2i, gl.glUniform2iv),
(3, gl.glUniform3i, gl.glUniform3iv),
(4, gl.glUniform4i, gl.glUniform4iv)]:
name = 'u_i%i' % i
value = [0] * i
loc = gl.glGetUniformLocation(hprog, name)
fun1(loc, *value) # e.g. glUniform4i
fun2(loc, 1, value) # e.g. glUniform4iv
# Set float uniforms to 1.0
# We set them twice just to touch both i and iv functions
for i, fun1, fun2 in [(1, gl.glUniform1f, gl.glUniform1fv),
(2, gl.glUniform2f, gl.glUniform2fv),
(3, gl.glUniform3f, gl.glUniform3fv),
(4, gl.glUniform4f, gl.glUniform4fv)]:
name = 'u_f%i' % i
value = [1.0] * i
loc = gl.glGetUniformLocation(hprog, name)
fun1(loc, *value) # e.g. glUniform4f
fun2(loc, 1, value) # e.g. glUniform4fv
# Set matrix uniforms
m = np.eye(5, dtype='float32')
loc = gl.glGetUniformLocation(hprog, 'u_m2')
gl.glUniformMatrix2fv(loc, 1, False, m[:2, :2])
#
loc = gl.glGetUniformLocation(hprog, 'u_m3')
m = np.eye(3, dtype='float32')
gl.glUniformMatrix3fv(loc, 1, False, m[:3, :3])
#
loc = gl.glGetUniformLocation(hprog, 'u_m4')
m = np.eye(4, dtype='float32')
gl.glUniformMatrix4fv(loc, 1, False, m[:4, :4])
# Check some uniforms
loc = gl.glGetUniformLocation(hprog, 'u_i1')
assert_equal(gl.glGetUniform(hprog, loc), 0)
loc = gl.glGetUniformLocation(hprog, 'u_i2')
assert_equal(gl.glGetUniform(hprog, loc), (0, 0))
loc = gl.glGetUniformLocation(hprog, 'u_f2')
assert_equal(gl.glGetUniform(hprog, loc), (1.0, 1.0))
# Check if all is ok
assert_equal(gl.glGetError(), 0)
# --- attributes
# Constant values for attributes. We do not even use this ...
loc = gl.glGetAttribLocation(hprog, 'a_1')
gl.glVertexAttrib1f(loc, 1.0)
loc = gl.glGetAttribLocation(hprog, 'a_2')
gl.glVertexAttrib2f(loc, 1.0, 1.0)
loc = gl.glGetAttribLocation(hprog, 'a_3')
gl.glVertexAttrib3f(loc, 1.0, 1.0, 1.0)
loc = gl.glGetAttribLocation(hprog, 'a_4')
gl.glVertexAttrib4f(loc, 1.0, 1.0, 1.0, 1.0)
# --- flush and finish
# Not really necessary, but we want to touch the functions
gl.glFlush()
gl.glFinish()
#print([i[1] for i in objects])
return objects
def test_event_connect_order():
"""Test event connection order"""
def a():
return
def b():
return
def c():
return
def d():
return
def e():
return
def f():
return
em = EventEmitter(type='test_event')
assert_raises(ValueError, em.connect, c, before=['c', 'foo'])
assert_raises(ValueError, em.connect, c, position='foo')
assert_raises(TypeError, em.connect, c, ref=dict())
em.connect(c, ref=True)
assert_equal((c, ), tuple(em.callbacks))
em.connect(c)
assert_equal((c, ), tuple(em.callbacks))
em.connect(d, ref=True, position='last')
assert_equal((c, d), tuple(em.callbacks))
em.connect(b, ref=True) # position='first'
assert_equal((b, c, d), tuple(em.callbacks))
assert_raises(RuntimeError, em.connect, a, before='c', after='d') # can't
em.connect(a, ref=True, before=['c', 'd']) # first possible pos == 0
assert_equal((a, b, c, d), tuple(em.callbacks))
em.connect(f, ref=True, after=['c', 'd'])
assert_equal((a, b, c, d, f), tuple(em.callbacks))
em.connect(e, ref=True, after='d', before='f')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref=True, after='a', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref='e', after='d', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, after='d', before='f', position='first') # no name
assert_equal(('a', 'b', 'c', 'd', None, 'f'), tuple(em.callback_refs))
em.disconnect(e)
assert_raises(ValueError, em.connect, e, ref='d') # duplicate name
em.connect(e, ref=True, after=[], before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((a, b, c, d, e, f), tuple(em.callbacks))
old_e = e
def e():
return
assert_raises(ValueError, em.connect, e, ref=True) # duplicate name
em.connect(e)
assert_equal((None, 'a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((e, a, b, c, d, old_e, f), tuple(em.callbacks))
def test_application():
"""Test application running"""
app = use_app()
print(app) # __repr__ without app
app.create()
wrong = 'glfw' if app.backend_name.lower() != 'glfw' else 'pyqt5'
assert_raises(RuntimeError, use_app, wrong)
app.process_events()
print(app) # test __repr__
assert_raises(ValueError, Canvas, keys='foo')
assert_raises(TypeError, Canvas, keys=dict(escape=1))
assert_raises(ValueError, Canvas, keys=dict(escape='foo')) # not an attr
pos = [0, 0] if app.backend_module.capability['position'] else None
size = (100, 100)
# Use "with" statement so failures don't leave open window
# (and test context manager behavior)
title = 'default'
with Canvas(title=title, size=size, app=app, show=True,
position=pos) as canvas:
context = canvas.context
assert_true(canvas.create_native() is None) # should be done already
assert_is(canvas.app, app)
assert_true(canvas.native)
assert_equal('swap_buffers', canvas.events.draw.callback_refs[-1])
canvas.measure_fps(0.001)
sleep(0.002)
canvas.update()
app.process_events()
assert_true(canvas.fps > 0)
# Other methods
print(canvas) # __repr__
assert_equal(canvas.title, title)
canvas.title = 'you'
with use_log_level('warning', record=True, print_msg=False):
if app.backend_module.capability['position']:
# todo: disable more tests based on capability
canvas.position = pos
canvas.size = size
canvas.connect(on_mouse_move)
assert_raises(ValueError, canvas.connect, _on_mouse_move)
if sys.platform != 'darwin': # XXX knownfail, prob. needs warmup
canvas.show(False)
canvas.show()
app.process_events()
assert_raises(ValueError, canvas.connect, on_nonexist)
# deprecation of "paint"
with use_log_level('info', record=True, print_msg=False) as log:
olderr = sys.stderr
try:
fid = StringIO()
sys.stderr = fid
@canvas.events.paint.connect
def fake(event):
pass
finally:
sys.stderr = olderr
assert_equal(len(log), 1)
assert_in('deprecated', log[0])
# screenshots
gl.glViewport(0, 0, *size)
ss = _screenshot()
assert_array_equal(ss.shape, size + (4,))
assert_equal(len(canvas._backend._vispy_get_geometry()), 4)
if sys.platform != 'win32': # XXX knownfail for windows
assert_array_equal(canvas.size, size)
assert_equal(len(canvas.position), 2) # XXX knownfail, doesn't "take"
# GLOO: should have an OpenGL context already, so these should work
vert = "void main (void) {gl_Position = pos;}"
frag = "void main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
vert = "uniform vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "uniform vec4 pos;\nvoid main (void) {gl_FragColor = pos;}"
program = Program(vert, frag)
# uniform = program.uniforms[0]
program['pos'] = [1, 2, 3, 4]
vert = "attribute vec4 pos;\nvoid main (void) {gl_Position = pos;}"
frag = "void main (void) {}"
program = Program(vert, frag)
# attribute = program.attributes[0]
program["pos"] = [1, 2, 3, 4]
# use a real program
program._glir.clear()
vert = ("uniform mat4 u_model;"
"attribute vec2 a_position; attribute vec4 a_color;"
"varying vec4 v_color;"
"void main (void) {v_color = a_color;"
"gl_Position = u_model * vec4(a_position, 0.0, 1.0);"
"v_color = a_color;}")
frag = "void main() {gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);}"
n, p = 250, 50
T = np.random.uniform(0, 2 * np.pi, n)
position = np.zeros((n, 2), dtype=np.float32)
position[:, 0] = np.cos(T)
position[:, 1] = np.sin(T)
color = np.ones((n, 4), dtype=np.float32) * (1, 1, 1, 1)
data = np.zeros(n * p, [('a_position', np.float32, 2),
('a_color', np.float32, 4)])
data['a_position'] = np.repeat(position, p, axis=0)
data['a_color'] = np.repeat(color, p, axis=0)
program = Program(vert, frag)
program.bind(VertexBuffer(data))
program['u_model'] = np.eye(4, dtype=np.float32)
# different codepath if no call to activate()
program.draw(gl.GL_POINTS)
subset = IndexBuffer(np.arange(10, dtype=np.uint32))
program.draw(gl.GL_POINTS, subset)
# bad programs
frag_bad = ("varying vec4 v_colors") # no semicolon
program = Program(vert, frag_bad)
assert_raises(RuntimeError, program.glir.flush, context.shared.parser)
frag_bad = None # no fragment code. no main is not always enough
assert_raises(ValueError, Program, vert, frag_bad)
# Timer
timer = Timer(interval=0.001, connect=on_mouse_move, iterations=2,
start=True, app=app)
timer.start()
timer.interval = 0.002
assert_equal(timer.interval, 0.002)
assert_true(timer.running)
sleep(.003)
assert_true(timer.elapsed >= 0.002)
timer.stop()
assert_true(not timer.running)
assert_true(timer.native)
timer.disconnect()
# test that callbacks take reasonable inputs
_test_callbacks(canvas)
# cleanup
canvas.swap_buffers()
canvas.update()
app.process_events()
# put this in even though __exit__ will call it to make sure we don't
# have problems calling it multiple times
canvas.close() # done by context
def test_import_nothing():
"""Not importing vispy should not import any vispy modules."""
modnames = loaded_vispy_modules('os', 2)
assert_equal(modnames, set())
def test_import_vispy_gloo():
"""Importing vispy.gloo should not pull in other vispy submodules."""
modnames = loaded_vispy_modules('vispy.gloo', 2)
assert_equal(
modnames,
set(_min_modules + ['vispy.gloo', 'vispy.glsl', 'vispy.color']))
def _test_object_creation_and_deletion():
# Stuff that is originally glGenX
# Note that if we test glIsTexture(x), we cannot assume x to be a
# nonexisting texture; we might have created a texture in another
# test and failed to clean it up.
# Create/delete texture
#assert_equal(gl.glIsTexture(12), False)
handle = gl.glCreateTexture()
gl.glBindTexture(gl.GL_TEXTURE_2D, handle)
assert_equal(gl.glIsTexture(handle), True)
gl.glDeleteTexture(handle)
assert_equal(gl.glIsTexture(handle), False)
# Create/delete buffer
#assert_equal(gl.glIsBuffer(12), False)
handle = gl.glCreateBuffer()
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, handle)
assert_equal(gl.glIsBuffer(handle), True)
gl.glDeleteBuffer(handle)
assert_equal(gl.glIsBuffer(handle), False)
# Create/delete framebuffer
#assert_equal(gl.glIsFramebuffer(12), False)
handle = gl.glCreateFramebuffer()
gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, handle)
assert_equal(gl.glIsFramebuffer(handle), True)
gl.glDeleteFramebuffer(handle)
assert_equal(gl.glIsFramebuffer(handle), False)
# Create/delete renderbuffer
#assert_equal(gl.glIsRenderbuffer(12), False)
handle = gl.glCreateRenderbuffer()
gl.glBindRenderbuffer(gl.GL_RENDERBUFFER, handle)
assert_equal(gl.glIsRenderbuffer(handle), True)
gl.glDeleteRenderbuffer(handle)
assert_equal(gl.glIsRenderbuffer(handle), False)
# Stuff that is originally called glCreate
# Create/delete program
#assert_equal(gl.glIsProgram(12), False)
handle = gl.glCreateProgram()
assert_equal(gl.glIsProgram(handle), True)
gl.glDeleteProgram(handle)
assert_equal(gl.glIsProgram(handle), False)
# Create/delete shader
#assert_equal(gl.glIsShader(12), False)
handle = gl.glCreateShader(gl.GL_VERTEX_SHADER)
assert_equal(gl.glIsShader(handle), True)
gl.glDeleteShader(handle)
assert_equal(gl.glIsShader(handle), False)
gl.check_error()
def test_color_interpretation():
"""Test basic color interpretation API"""
# test useful ways of single color init
r = ColorArray('r')
print(r) # test repr
r2 = ColorArray(r)
assert_equal(r, r2)
r2.rgb = 0, 0, 0
assert_equal(r2, ColorArray('black'))
assert_equal(r, ColorArray('r')) # modifying new one preserves old
assert_equal(r, r.copy())
assert_equal(r, ColorArray('#ff0000'))
assert_equal(r, ColorArray('#FF0000FF'))
assert_equal(r, ColorArray('red'))
assert_equal(r, ColorArray('red', alpha=1.0))
assert_equal(ColorArray((1, 0, 0, 0.1)), ColorArray('red', alpha=0.1))
assert_array_equal(r.rgb.ravel(), (1., 0., 0.))
assert_array_equal(r.rgba.ravel(), (1., 0., 0., 1.))
assert_array_equal(r.RGBA.ravel(), (255, 0, 0, 255))
# handling multiple colors
rgb = ColorArray(list('rgb'))
print(rgb) # multi repr
assert_array_equal(rgb, ColorArray(np.eye(3)))
# complex/annoying case
rgb = ColorArray(['r', (0, 1, 0), '#0000ffff'])
assert_array_equal(rgb, ColorArray(np.eye(3)))
assert_raises(RuntimeError, ColorArray, ['r', np.eye(3)]) # can't nest
# getting/setting properties
r = ColorArray('#ffff')
assert_equal(r, ColorArray('white'))
r = ColorArray('#ff000000')
assert_true('turquoise' in get_color_names()) # make sure our JSON loaded
assert_equal(r.alpha, 0)
r.alpha = 1.0
assert_equal(r, ColorArray('r'))
r.alpha = 0
r.rgb = (1, 0, 0)
assert_equal(r.alpha, 0)
assert_equal(r.hex, ['#ff0000'])
r.alpha = 1
r.hex = '00ff00'
assert_equal(r, ColorArray('g'))
assert_array_equal(r.rgb.ravel(), (0., 1., 0.))
r.RGB = 255, 0, 0
assert_equal(r, ColorArray('r'))
assert_array_equal(r.RGB.ravel(), (255, 0, 0))
r.RGBA = 255, 0, 0, 0
assert_equal(r, ColorArray('r', alpha=0))
w = ColorArray()
w.rgb = ColorArray('r').rgb + ColorArray('g').rgb + ColorArray('b').rgb
assert_equal(w, ColorArray('white'))
w = ColorArray('white')
assert_equal(w, w.darker().lighter())
assert_equal(w, w.darker(0.1).darker(-0.1))
w2 = w.darker()
assert_true(w != w2)
w.darker(copy=False)
assert_equal(w, w2)
with use_log_level('warning', record=True, print_msg=False) as w:
w = ColorArray('white')
w.value = 2
assert_equal(len(w), 1)
assert_equal(w, ColorArray('white'))
# warnings and errors
assert_raises(ValueError, ColorArray, '#ffii00') # non-hex
assert_raises(ValueError, ColorArray, '#ff000') # too short
assert_raises(ValueError, ColorArray, [0, 0]) # not enough vals
assert_raises(ValueError, ColorArray, [2, 0, 0]) # val > 1
assert_raises(ValueError, ColorArray, [-1, 0, 0]) # val < 0
c = ColorArray([2., 0., 0.], clip=True) # val > 1
assert_true(np.all(c.rgb <= 1))
c = ColorArray([-1., 0., 0.], clip=True) # val < 0
assert_true(np.all(c.rgb >= 0))
# make sure our color dict works
for key in get_color_names():
assert_true(ColorArray(key))
assert_raises(ValueError, ColorArray, 'foo') # unknown color error
_color_dict = get_color_dict()
assert isinstance(_color_dict, dict)
assert set(_color_dict.keys()) == set(get_color_names())