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import numpy as np
import numpy.testing as npt
import moderngl
def test_1(ctx):
prog = 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(0.0, 0.5, 1.0, 1.0);
}
''',
)
vbo = ctx.buffer(np.array([-1, -1, -1, 1, 1, -1, 1, 1], dtype='f4'))
vao = ctx.simple_vertex_array(prog, vbo, 'in_vert')
fbo = ctx.simple_framebuffer((4, 4), dtype='f2')
fbo.use()
fbo.clear()
vao.render(moderngl.TRIANGLE_STRIP)
res = np.frombuffer(fbo.read(dtype='f2'), dtype='f2')
expected = np.tile([0.0, 0.5, 1.0], 4 * 4)
npt.assert_almost_equal(res, expected, decimal=2)
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