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import pygame
import moderngl
pygame.init()
pygame.display.set_mode((400, 400), flags=pygame.OPENGL | pygame.DOUBLEBUF)
# ctx = moderngl.create_context()
ctx = moderngl.get_context()
prog = ctx.program(
vertex_shader='''
#version 330 core
uniform float time;
vec2 vertex[3] = vec2[](
vec2(1.0, 0.0),
vec2(-0.5, -0.86),
vec2(-0.5, 0.86)
);
vec3 color[3] = vec3[](
vec3(0.0, 0.0, 1.0),
vec3(0.0, 1.0, 0.0),
vec3(1.0, 0.0, 0.0)
);
out vec3 v_color;
void main() {
v_color = color[gl_VertexID];
float r = float(gl_InstanceID - 4) * 0.15 * (0.8 + sin(time) * 0.2);
mat2 rot = mat2(cos(r), sin(r), -sin(r), cos(r));
gl_Position = vec4(rot * vertex[gl_VertexID] * 0.95, 0.0, 1.0);
}
''',
fragment_shader='''
#version 330 core
in vec3 v_color;
out vec4 f_color;
void main() {
f_color = vec4(pow(v_color, vec3(1.0 / 2.2)), 1.0);
}
''',
)
vao = ctx.vertex_array(prog, [])
vao.instances = 9
vao.vertices = 3
clock = pygame.Clock()
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
prog["time"].value += 1.0 / 60.0
ctx.clear()
vao.render()
pygame.display.flip()
clock.tick(60)
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