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# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------------
# Copyright (c) 2014, Nicolas P. Rougier. All rights reserved.
# Distributed under the terms of the new BSD License.
# -----------------------------------------------------------------------------
import unittest
import numpy as np
from vispy import gloo, app
from vispy.gloo.program import Program
from vispy.testing import run_tests_if_main, requires_application
from vispy.gloo.context import set_current_canvas, forget_canvas
class DummyParser(gloo.glir.BaseGlirParser):
@property
def shader_compatibility(self):
return 'desktop'
def parse(self, commands):
pass
class DummyCanvas:
def __init__(self):
self.context = gloo.context.GLContext()
self.context.shared.parser = DummyParser()
self.context.glir.flush = lambda *args: None # No flush
class ProgramTest(unittest.TestCase):
def test_init(self):
from vispy.gloo.program import VertexShader, FragmentShader
# Test ok init, no shaders
program = Program()
assert program._user_variables == {}
assert program._code_variables == {}
assert program._pending_variables == {}
assert program.shaders[0] is None
assert program.shaders[1] is None
# Test ok init, with shader
program = Program('A', 'B')
assert isinstance(program.shaders[0], VertexShader)
assert program.shaders[0].code == 'A'
assert isinstance(program.shaders[1], FragmentShader)
assert program.shaders[1].code == 'B'
# False inits
self.assertRaises(ValueError, Program, 'A', None)
self.assertRaises(ValueError, Program, None, 'B')
self.assertRaises(ValueError, Program, 3, 'B')
self.assertRaises(ValueError, Program, 3, None)
self.assertRaises(ValueError, Program, 'A', 3)
self.assertRaises(ValueError, Program, None, 3)
self.assertRaises(ValueError, Program, "", "")
self.assertRaises(ValueError, Program, "foo", "")
self.assertRaises(ValueError, Program, "", "foo")
def test_setting_shaders(self):
from vispy.gloo.program import VertexShader, FragmentShader
program = Program("A", "B")
assert isinstance(program.shaders[0], VertexShader)
assert program.shaders[0].code == 'A'
assert isinstance(program.shaders[1], FragmentShader)
assert program.shaders[1].code == 'B'
program.set_shaders('C', 'D')
assert program.shaders[0].code == "C"
assert program.shaders[1].code == "D"
@requires_application()
def test_error(self):
vert = '''
void main() {
vec2 xy;
error on this line
vec2 ab;
}
'''
frag = 'void main() { glFragColor = vec4(1, 1, 1, 1); }'
with app.Canvas() as c:
program = Program(vert, frag)
try:
program._glir.flush(c.context.shared.parser)
except Exception as err:
assert 'error on this line' in str(err)
else:
raise Exception("Compile program should have failed.")
def test_uniform(self):
# Text array unoforms
program = Program("uniform float A[10];", "foo")
assert ('uniform_array', 'float', 'A') in program.variables
assert len(program.variables) == 11 # array plus elements
self.assertRaises(ValueError, program.__setitem__, 'A',
np.ones((9, 1)))
program['A'] = np.ones((10, 1))
program['A[0]'] = 0
assert 'A[0]' in program._user_variables
assert 'A[0]' not in program._pending_variables
# Init program
program = Program("uniform float A;",
"uniform float A; uniform vec4 B;")
assert ('uniform', 'float', 'A') in program.variables
assert ('uniform', 'vec4', 'B') in program.variables
assert len(program.variables) == 2
# Set existing uniforms
program['A'] = 3.0
assert isinstance(program['A'], np.ndarray)
assert program['A'] == 3.0
assert 'A' in program._user_variables
#
program['B'] = 1.0, 2.0, 3.0, 4.0
assert isinstance(program['B'], np.ndarray)
assert all(program['B'] == np.array((1.0, 2.0, 3.0, 4.0), np.float32))
assert 'B' in program._user_variables
# Set non-existent uniforms
program['C'] = 1.0, 2.0
assert program['C'] == (1.0, 2.0)
assert 'C' not in program._user_variables
assert 'C' in program._pending_variables
# Set samplers
program.set_shaders("""uniform sampler1D T1;
uniform sampler2D T2;
uniform sampler3D T3;""", "f")
program['T1'] = np.zeros((10, ), np.float32)
program['T2'] = np.zeros((10, 10), np.float32)
program['T3'] = np.zeros((10, 10, 10), np.float32)
assert isinstance(program['T1'], gloo.Texture1D)
assert isinstance(program['T2'], gloo.Texture2D)
assert isinstance(program['T3'], gloo.Texture3D)
# Set samplers with textures
tex = gloo.Texture2D((10, 10))
program['T2'] = tex
assert program['T2'] is tex
program['T2'] = np.zeros((10, 10), np.float32) # Update texture
assert program['T2'] is tex
# C should be taken up when code comes along that mentions it
program.set_shaders("uniform float A; uniform vec2 C;",
"uniform float A; uniform vec4 B;")
assert isinstance(program['C'], np.ndarray)
assert all(program['C'] == np.array((1.0, 2.0), np.float32))
assert 'C' in program._user_variables
assert 'C' not in program._pending_variables
# Set wrong values
self.assertRaises(ValueError, program.__setitem__, 'A', (1.0, 2.0))
self.assertRaises(ValueError, program.__setitem__, 'B', (1.0, 2.0))
self.assertRaises(ValueError, program.__setitem__, 'C', 1.0)
# Set wrong values beforehand
program['D'] = 1.0, 2.0
self.assertRaises(ValueError, program.set_shaders,
'', 'uniform vec3 D;')
def test_attributes(self):
program = Program("attribute float A; attribute vec4 B;", "foo")
assert ('attribute', 'float', 'A') in program.variables
assert ('attribute', 'vec4', 'B') in program.variables
assert len(program.variables) == 2
from vispy.gloo import VertexBuffer
vbo = VertexBuffer()
# Set existing uniforms
program['A'] = vbo
assert program['A'] == vbo
assert 'A' in program._user_variables
assert program._user_variables['A'] is vbo
# Set data - update existing vbp
program['A'] = np.zeros((10,), np.float32)
assert program._user_variables['A'] is vbo
# Set data - create new vbo
program['B'] = np.zeros((10, 4), np.float32)
assert isinstance(program._user_variables['B'], VertexBuffer)
# Set non-existent uniforms
vbo = VertexBuffer() # new one since old one is now wrong size
program['C'] = vbo
assert program['C'] == vbo
assert 'C' not in program._user_variables
assert 'C' in program._pending_variables
# C should be taken up when code comes along that mentions it
program.set_shaders("attribute float A; attribute vec2 C;", "foo")
assert program['C'] == vbo
assert 'C' in program._user_variables
assert 'C' not in program._pending_variables
# Set wrong values
self.assertRaises(ValueError, program.__setitem__, 'A', 'asddas')
# Set wrong values beforehand
program['D'] = ""
self.assertRaises(ValueError, program.set_shaders,
'attribute vec3 D;', '')
# Set to one value per vertex
program.set_shaders("attribute float A; attribute vec2 C;", "foo")
program['A'] = 1.0
assert program['A'] == 1.0
program['C'] = 1.0, 2.0
assert all(program['C'] == np.array((1.0, 2.0), np.float32))
#
self.assertRaises(ValueError, program.__setitem__, 'A', (1.0, 2.0))
self.assertRaises(ValueError, program.__setitem__, 'C', 1.0)
self.assertRaises(ValueError, program.bind, 'notavertexbuffer')
program = Program("attribute vec2 C;", "foo")
# first code path: no exsting variable
self.assertRaises(ValueError, program.__setitem__, 'C',
np.ones((2, 10), np.float32))
# second code path: variable exists (VertexBuffer.set_data)
program['C'] = np.ones((10, 2), np.float32)
self.assertRaises(ValueError, program.__setitem__, 'C',
np.ones((2, 10), np.float32))
def test_vbo(self):
# Test with count
program = Program('attribute float a; attribute vec2 b;', 'foo', 10)
assert program._count == 10
assert ('attribute', 'float', 'a') in program.variables
assert ('attribute', 'vec2', 'b') in program.variables
# Set
program['a'] = np.ones((10,), np.float32)
assert np.all(program._buffer['a'] == 1)
def test_varyings(self):
# Varyings and constants are detected
program = Program("varying float A; const vec4 B;", "foo")
assert ('varying', 'float', 'A') in program.variables
assert ('const', 'vec4', 'B') in program.variables
# But cannot be set
self.assertRaises(KeyError, program.__setitem__, 'A', 3.0)
self.assertRaises(KeyError, program.__setitem__, 'B', (1.0, 2.0, 3.0))
# And anything else also fails
self.assertRaises(KeyError, program.__getitem__, 'fooo')
def test_type_aliases(self):
program = Program("in bool A; out float B;", "foo")
# in aliased to attribute, out to varying
assert ('attribute', 'bool', 'A') in program.variables
assert ('varying', 'float', 'B') in program.variables
def test_draw(self):
# Init
program = Program("attribute float A;", "uniform float foo")
program['A'] = np.zeros((10,), np.float32)
dummy_canvas = DummyCanvas()
glir = dummy_canvas.context.glir
set_current_canvas(dummy_canvas)
try:
# Draw arrays
program.draw('triangles')
glir_cmd = glir.clear()[-1]
assert glir_cmd[0] == 'DRAW'
assert len(glir_cmd[-2]) == 2
# Draw elements
indices = gloo.IndexBuffer(np.zeros(10, dtype=np.uint8))
program.draw('triangles', indices)
glir_cmd = glir.clear()[-1]
assert glir_cmd[0] == 'DRAW'
assert len(glir_cmd[-2]) == 3
# Invalid mode
self.assertRaises(ValueError, program.draw, 'nogeometricshape')
# Invalid index
self.assertRaises(TypeError, program.draw, 'triangles', 'notindex')
# No atributes
program = Program("attribute float A;", "uniform float foo")
self.assertRaises(RuntimeError, program.draw, 'triangles')
# Atributes with different sizes
program = Program("attribute float A; attribute float B;", "foo")
program['A'] = np.zeros((10,), np.float32)
program['B'] = np.zeros((11,), np.float32)
self.assertRaises(RuntimeError, program.draw, 'triangles')
finally:
forget_canvas(dummy_canvas)
run_tests_if_main()
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