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import os
import sys
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..')))
import utils3d
import moderngl
import numpy as np
from PIL import Image
from pyrr import Matrix44
# -------------------
# CREATE CONTEXT HERE
# -------------------
import moderngl
def run():
ctx = moderngl.create_context(
standalone=True,
backend='egl',
# These are OPTIONAL if you want to load a specific version
libgl='libGL.so.1',
libegl='libEGL.so.1',
)
prog = ctx.program(vertex_shader="""
#version 330
uniform mat4 model;
in vec2 in_vert;
in vec3 in_color;
out vec3 color;
void main() {
gl_Position = model * vec4(in_vert, 0.0, 1.0);
color = in_color;
}
""",
fragment_shader="""
#version 330
in vec3 color;
out vec4 fragColor;
void main() {
fragColor = vec4(color, 1.0);
}
""")
vertices = np.array([
-0.6, -0.6,
1.0, 0.0, 0.0,
0.6, -0.6,
0.0, 1.0, 0.0,
0.0, 0.6,
0.0, 0.0, 1.0,
], dtype='f4')
vbo = ctx.buffer(vertices)
vao = ctx.simple_vertex_array(prog, vbo, 'in_vert', 'in_color')
fbo = ctx.framebuffer(color_attachments=[ctx.texture((512, 512), 4)])
fbo.use()
ctx.clear()
prog['model'].write(Matrix44.from_eulers((0.0, 0.1, 0.0), dtype='f4'))
vao.render(moderngl.TRIANGLES)
data = fbo.read(components=3)
image = Image.frombytes('RGB', fbo.size, data)
image = image.transpose(Image.FLIP_TOP_BOTTOM)
image.save(os.path.join(os.path.dirname(__file__), '..', '..', 'results_to_check', 'output.png'))
if __name__ == '__main__':
run()
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