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-rw-r--r--utility/opengl.py136
-rw-r--r--utility/particles.py50
2 files changed, 180 insertions, 6 deletions
diff --git a/utility/opengl.py b/utility/opengl.py
new file mode 100644
index 0000000..afbfa00
--- /dev/null
+++ b/utility/opengl.py
@@ -0,0 +1,136 @@
+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):
+ self.lattice = lattice
+ 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_RGBA, 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_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)
+ 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_RGBA, 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(self):
+ cl.enqueue_acquire_gl_objects(self.lattice.queue, [self.cl_gl_moments])
+
+ if self.lattice.tick:
+ self.program.collect_gl_moments_to_texture(
+ 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_to_texture(
+ 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)
+
diff --git a/utility/particles.py b/utility/particles.py
index a7ef777..4b770bd 100644
--- a/utility/particles.py
+++ b/utility/particles.py
@@ -3,16 +3,23 @@ mf = cl.mem_flags
import numpy
+from mako.template import Template
+from pathlib import Path
+
import OpenGL.GL as gl
from OpenGL.arrays import vbo
class Particles:
- def __init__(self, context, queue, float_type, grid):
- self.context = context
+ def __init__(self, lattice, moments, grid):
+ self.lattice = lattice
+ self.context = self.lattice.context
+ self.queue = self.lattice.queue
+ self.float_type = self.lattice.memory.float_type
+ self.moments = moments
self.count = len(grid)
- self.np_particles = numpy.ndarray(shape=(self.count, 4), dtype=float_type)
- self.np_init_particles = numpy.ndarray(shape=(self.count, 4), dtype=float_type)
+ self.np_particles = numpy.ndarray(shape=(self.count, 4), dtype=self.float_type)
+ self.np_init_particles = numpy.ndarray(shape=(self.count, 4), dtype=self.float_type)
if len(grid[0,:]) == 2:
self.np_particles[:,0:2] = grid
@@ -28,5 +35,36 @@ class Particles:
self.gl_particles.bind()
self.cl_gl_particles = cl.GLBuffer(self.context, mf.READ_WRITE, int(self.gl_particles))
- self.cl_init_particles = cl.Buffer(context, mf.READ_ONLY, size=self.count * 4*numpy.float32(0).nbytes)
- cl.enqueue_copy(queue, self.cl_init_particles, self.np_init_particles).wait();
+ self.cl_init_particles = cl.Buffer(self.context, mf.READ_ONLY, size=self.count * 4*numpy.float32(0).nbytes)
+ cl.enqueue_copy(self.queue, self.cl_init_particles, self.np_init_particles).wait();
+
+ self.build_kernel()
+
+ def build_kernel(self):
+ program_src = Template(filename = str(Path(__file__).parent/'../template/particles.mako')).render(
+ descriptor = self.lattice.descriptor,
+ geometry = self.lattice.geometry,
+ memory = self.lattice.memory,
+ float_type = self.float_type,
+ )
+ self.program = cl.Program(self.lattice.context, program_src).build(self.lattice.compiler_args)
+
+ def bind(self):
+ gl.glEnableClientState(gl.GL_VERTEX_ARRAY)
+ self.gl_particles.bind()
+ gl.glVertexPointer(4, gl.GL_FLOAT, 0, self.gl_particles)
+
+ def update(self, aging = False):
+ cl.enqueue_acquire_gl_objects(self.queue, [self.cl_gl_particles])
+
+ if aging:
+ age = numpy.float32(0.000006)
+ else:
+ age = numpy.float32(0.0)
+
+ self.program.update_particles(
+ self.queue, (self.count,1), None,
+ self.moments.cl_gl_moments,
+ self.lattice.memory.cl_material,
+ self.cl_gl_particles, self.cl_init_particles,
+ age)