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import os
import glm
import moderngl
import moderngl_window as mglw
class Example(mglw.WindowConfig):
title = 'Resource Loading with ModernGL Window'
resizable = False
gl_version = (3, 3)
window_size = (800, 800)
aspect_ratio = 1.0
resource_dir = os.path.normpath(os.path.join(__file__, '../data'))
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.obj = self.load_scene('models/sitting_dummy.obj')
self.texture = self.load_texture_2d('textures/wood.jpg')
self.program = self.ctx.program(
vertex_shader='''
#version 330
uniform mat4 Mvp;
in vec3 in_position;
in vec3 in_normal;
in vec2 in_texcoord_0;
out vec3 v_vert;
out vec3 v_norm;
out vec2 v_text;
void main() {
v_vert = in_position;
v_norm = in_normal;
v_text = in_texcoord_0;
gl_Position = Mvp * vec4(in_position, 1.0);
}
''',
fragment_shader='''
#version 330
uniform sampler2D Texture;
uniform vec4 Color;
uniform vec3 Light;
in vec3 v_vert;
in vec3 v_norm;
in vec2 v_text;
out vec4 f_color;
void main() {
float lum = dot(normalize(v_norm), normalize(v_vert - Light));
lum = acos(lum) / 3.14159265;
lum = clamp(lum, 0.0, 1.0);
lum = lum * lum;
lum = smoothstep(0.0, 1.0, lum);
lum *= smoothstep(0.0, 80.0, v_vert.z) * 0.3 + 0.7;
lum = lum * 0.8 + 0.2;
vec3 color = texture(Texture, v_text).rgb;
color = color * (1.0 - Color.a) + Color.rgb * Color.a;
f_color = vec4(color * lum, 1.0);
}
''',
)
# Create a vao from the first root node (attribs are auto mapped)
self.vao = self.obj.root_nodes[0].mesh.vao.instance(self.program)
def camera_matrix(self):
proj = glm.perspective(45.0, self.aspect_ratio, 0.1, 1000.0)
look = glm.lookAt((-85.0, -180.0, 140.0), (0.0, 0.0, 65.0), (0.0, 0.0, 1.0))
return proj * look
def render(self, time, frame_time):
self.ctx.clear(1.0, 1.0, 1.0)
self.ctx.enable(moderngl.DEPTH_TEST)
self.program['Light'] = (-140.0, -300.0, 350.0)
self.program['Color'] = (1.0, 1.0, 1.0, 0.25)
self.program['Mvp'].write(self.camera_matrix())
self.texture.use()
self.vao.render()
if __name__ == '__main__':
Example.run()
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