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
|
import pyopencl as cl
mf = cl.mem_flags
import numpy
import sympy
from mako.template import Template
from pathlib import Path
from OpenGL.GL import *
from OpenGL.arrays import vbo
class MomentsVertexBuffer:
def __init__(self, lattice):
self.lattice = lattice
self.np_moments = numpy.ndarray(shape=(self.lattice.memory.volume, 4), dtype=self.lattice.memory.float_type)
self.gl_moments = vbo.VBO(data=self.np_moments, usage=GL_DYNAMIC_DRAW, target=GL_ARRAY_BUFFER)
self.gl_moments.bind()
self.cl_gl_moments = cl.GLBuffer(self.lattice.context, mf.READ_WRITE, int(self.gl_moments))
self.build_kernel()
def build_kernel(self):
program_src = Template(filename = str(Path(__file__).parent/'../template/opengl.mako')).render(
descriptor = self.lattice.descriptor,
geometry = self.lattice.geometry,
memory = self.lattice.memory,
moments_subexpr = self.lattice.moments[0],
moments_assignment = self.lattice.moments[1],
collide_subexpr = self.lattice.collide[0],
collide_assignment = self.lattice.collide[1],
float_type = self.lattice.float_type[1],
ccode = sympy.ccode
)
self.program = cl.Program(self.lattice.context, program_src).build(self.lattice.compiler_args)
def bind(self):
self.gl_moments.bind()
glEnableClientState(GL_VERTEX_ARRAY)
glVertexPointer(4, GL_FLOAT, 0, self.gl_moments)
def collect(self):
cl.enqueue_acquire_gl_objects(self.lattice.queue, [self.cl_gl_moments])
if self.lattice.tick:
self.program.collect_gl_moments(
self.lattice.queue,
self.lattice.grid.size(),
self.lattice.layout,
self.lattice.memory.cl_pop_b,
self.lattice.memory.cl_material,
self.cl_gl_moments)
else:
self.program.collect_gl_moments(
self.lattice.queue,
self.lattice.grid.size(),
self.lattice.layout,
self.lattice.memory.cl_pop_a,
self.lattice.memory.cl_material,
self.cl_gl_moments)
class MomentsTexture:
def __init__(self, lattice, include_materials = True):
self.lattice = lattice
self.include_materials = include_materials
self.gl_texture_buffer = numpy.ndarray(shape=(self.lattice.memory.volume, 4), dtype=self.lattice.memory.float_type)
self.gl_texture_buffer[:,:] = 0.0
self.gl_moments = glGenTextures(1)
self.gl_texture_type = {2: GL_TEXTURE_2D, 3: GL_TEXTURE_3D}.get(self.lattice.descriptor.d)
glBindTexture(self.gl_texture_type, self.gl_moments)
if self.gl_texture_type == GL_TEXTURE_3D:
glTexImage3D(self.gl_texture_type, 0, GL_RGBA32F, self.lattice.memory.size_x, self.lattice.memory.size_y, self.lattice.memory.size_z, 0, GL_RGBA, GL_FLOAT, self.gl_texture_buffer)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(self.gl_texture_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE)
self.cl_gl_moments = cl.GLTexture(self.lattice.context, mf.READ_WRITE, self.gl_texture_type, 0, self.gl_moments, 3)
elif self.gl_texture_type == GL_TEXTURE_2D:
glTexImage2D(self.gl_texture_type, 0, GL_RGBA32F, self.lattice.memory.size_x, self.lattice.memory.size_y, 0, GL_RGBA, GL_FLOAT, self.gl_texture_buffer)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(self.gl_texture_type, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(self.gl_texture_type, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
self.cl_gl_moments = cl.GLTexture(self.lattice.context, mf.READ_WRITE, self.gl_texture_type, 0, self.gl_moments, 2)
self.build_kernel()
def build_kernel(self):
program_src = Template(filename = str(Path(__file__).parent/'../template/opengl.mako')).render(
descriptor = self.lattice.descriptor,
geometry = self.lattice.geometry,
memory = self.lattice.memory,
moments_subexpr = self.lattice.moments[0],
moments_assignment = self.lattice.moments[1],
collide_subexpr = self.lattice.collide[0],
collide_assignment = self.lattice.collide[1],
float_type = self.lattice.float_type[1],
ccode = sympy.ccode
)
self.program = cl.Program(self.lattice.context, program_src).build(self.lattice.compiler_args)
def bind(self, location = GL_TEXTURE0):
glEnable(self.gl_texture_type)
glActiveTexture(location);
glBindTexture(self.gl_texture_type, self.gl_moments)
def collect_moments_from_pop_to_texture(self, population):
if self.include_materials:
self.program.collect_gl_moments_and_materials_to_texture(
self.lattice.queue,
self.lattice.grid.size(),
self.lattice.layout,
population,
self.lattice.memory.cl_material,
self.cl_gl_moments)
else:
self.program.collect_gl_moments_to_texture(
self.lattice.queue,
self.lattice.grid.size(),
self.lattice.layout,
population,
self.cl_gl_moments)
def collect(self):
cl.enqueue_acquire_gl_objects(self.lattice.queue, [self.cl_gl_moments])
if self.lattice.tick:
self.collect_moments_from_pop_to_texture(self.lattice.memory.cl_pop_b)
else:
self.collect_moments_from_pop_to_texture(self.lattice.memory.cl_pop_a)
|