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'''
Renders a blue triangle
'''
import numpy as np
from _example import Example
class HelloWorld(Example):
gl_version = (3, 3)
title = "Hello World"
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.prog = self.ctx.program(
vertex_shader='''
#version 330
in vec2 in_vert;
void main() {
gl_Position = vec4(in_vert, 0.0, 1.0);
}
''',
fragment_shader='''
#version 330
out vec4 f_color;
void main() {
f_color = vec4(0.3, 0.5, 1.0, 1.0);
}
''',
)
vertices = np.array([
0.0, 0.8,
-0.6, -0.8,
0.6, -0.8,
], dtype='f4')
self.vbo = self.ctx.buffer(vertices)
self.vao = self.ctx.simple_vertex_array(self.prog, self.vbo, 'in_vert')
def render(self, time, frame_time):
self.ctx.clear(1.0, 1.0, 1.0)
self.vao.render()
if __name__ == '__main__':
HelloWorld.run()
|
