pip install vispy
python
import numpy as np
from vispy import app, gloo
vertex_shader = """
attribute vec2 position;
void main() {
gl_Position = vec4(position, 0.0, 1.0);
}
"""
fragment_shader = """
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
}
"""
vertex_data = np.array([[0, 0], [0.5, 0.5], [-0.5, 0.5]], dtype=np.float32)
program = gloo.Program(vertex_shader, fragment_shader)
program['position'] = gloo.VertexBuffer(vertex_data)
canvas = app.Canvas()
canvas.show()
@canvas.connect
def on_draw(event):
gloo.clear(color=True, depth=True)
program.draw('triangles')
app.run()
