1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
from array import array
import numpy as np
import numpy.testing as npt
import moderngl
def test_properties(ctx):
prog = ctx.program(
vertex_shader="""
#version 330
in vec2 pos;
in vec2 velocity;
out vec2 out_pos;
void main() {
out_pos = pos + velocity;
}
""",
varyings=["out_pos"],
)
buffer = ctx.buffer(array('f', range(16)))
vao = ctx.vertex_array(prog, [(buffer, '2f', 'pos')])
assert vao.program == prog
assert vao.vertices == 8
assert vao.index_buffer is None
assert vao.index_element_size == 4
assert vao.mode == moderngl.POINTS
assert vao.instances == 1
assert vao.glo > 0
vao.mode = moderngl.LINES
assert vao.mode == moderngl.LINES
vao.vertices = 2
assert vao.vertices == 2
vao.instances = 2
assert vao.instances == 2
def test_padding(ctx):
prog = ctx.program(
vertex_shader="""
#version 330
in vec2 pos;
in vec2 velocity;
out vec2 out_pos;
void main() {
out_pos = pos + velocity;
}
""",
varyings=["out_pos"],
)
buffer = ctx.buffer(array('f', range(16)))
ctx.vertex_array(prog, [(buffer, '2f 2x4', 'pos')])
ctx.vertex_array(prog, [(buffer, '2f 2f', 'pos', 'velocity')])
def test_empty(ctx):
prog = ctx.program(
vertex_shader="""
#version 330
in vec2 pos;
in vec2 velocity;
out vec2 out_pos;
void main() {
out_pos = pos + velocity;
}
""",
)
ctx.vertex_array(prog, [])
# def test_optional(ctx):
# prog = ctx.program(
# vertex_shader="""
# #version 330
# in vec2 pos;
# in vec2 velocity;
# in vec4 color;
# out vec2 out_pos;
# void main() {
# out_pos = pos + velocity;
# }
# """,
# )
# buffer = ctx.buffer(array('f', range(16)))
# ctx.vertex_array(prog, [(buffer, '2f 2f 4f', 'pos', 'velocity', 'color?')])
def test_1(ctx):
prog = ctx.program(
vertex_shader='''
#version 330
in vec4 in_vert;
out vec4 out_vert;
void main() {
out_vert = in_vert;
}
''',
varyings=['out_vert']
)
vbo1 = ctx.buffer(np.array([4.0, 2.0, 7.5, 1.8], dtype='f4').tobytes())
vbo2 = ctx.buffer(reserve=vbo1.size)
vao = ctx.simple_vertex_array(prog, vbo1, 'in_vert')
assert vao.mode == moderngl.POINTS
vao.transform(vbo2, moderngl.POINTS)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 2.0, 7.5, 1.8])
def test_2(ctx):
prog = ctx.program(
vertex_shader='''
#version 330
in vec4 in_vert;
out vec4 out_vert;
void main() {
out_vert = in_vert;
}
''',
varyings=['out_vert']
)
vbo1 = ctx.buffer(np.array([4.0, 2.0, 7.5, 1.8], dtype='f4').tobytes())
vbo2 = ctx.buffer(reserve=16)
vao = ctx.vertex_array(prog, [(vbo1, '4f', 'in_vert')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 2.0, 7.5, 1.8])
vao = ctx.vertex_array(prog, [(vbo1, '3f', 'in_vert')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 2.0, 7.5, 1.0])
vao = ctx.vertex_array(prog, [(vbo1, '2f', 'in_vert')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 2.0, 0.0, 1.0])
vao = ctx.vertex_array(prog, [(vbo1, '1f', 'in_vert')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 0.0, 0.0, 1.0])
def test_3(ctx):
prog = ctx.program(
vertex_shader='''
#version 330
in mat4 in_mat;
out mat4 out_mat;
void main() {
out_mat = in_mat;
}
''',
varyings=['out_mat']
)
vbo1 = ctx.buffer(np.arange(1, 17, dtype='f4').tobytes())
vbo2 = ctx.buffer(reserve=64)
vao = ctx.vertex_array(prog, [(vbo1, '16f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
])
vao = ctx.vertex_array(prog, [(vbo1, '12f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [
1, 2, 3, 1,
4, 5, 6, 1,
7, 8, 9, 1,
10, 11, 12, 1,
])
vao = ctx.vertex_array(prog, [(vbo1, '8f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [
1, 2, 0, 1,
3, 4, 0, 1,
5, 6, 0, 1,
7, 8, 0, 1,
])
vao = ctx.vertex_array(prog, [(vbo1, '4f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [
1, 0, 0, 1,
2, 0, 0, 1,
3, 0, 0, 1,
4, 0, 0, 1,
])
def test_4(ctx):
prog = ctx.program(
vertex_shader='''
#version 330
in mat2 in_mat;
out mat2 out_mat;
void main() {
out_mat = in_mat;
}
''',
varyings=['out_mat']
)
vbo1 = ctx.buffer(np.array([4.0, 2.0, 7.5, 1.8], dtype='f4').tobytes())
vbo2 = ctx.buffer(reserve=16)
vao = ctx.vertex_array(prog, [(vbo1, '4f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 2.0, 7.5, 1.8])
vao = ctx.vertex_array(prog, [(vbo1, '2f', 'in_mat')])
vao.transform(vbo2, moderngl.POINTS, vertices=1)
res = np.frombuffer(vbo2.read(), dtype='f4')
npt.assert_almost_equal(res, [4.0, 0.0, 2.0, 0.0])
def test_vao_labels(ctx):
prog = ctx.program(
vertex_shader="""
#version 330
in vec2 pos;
in vec2 velocity;
out vec2 out_pos;
void main() {
out_pos = pos + velocity;
}
""",
)
vao = ctx.vertex_array(prog, [])
vao.label = "My VAO"
assert vao.label == "My VAO"
|
