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import pyopencl as cl
mf = cl.mem_flags
import numpy
import OpenGL.GL as gl
from OpenGL.arrays import vbo
class Particles:
def __init__(self, context, queue, float_type, grid):
self.context = context
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)
if len(grid[0,:]) == 2:
self.np_particles[:,0:2] = grid
self.np_particles[:,2] = 0
self.np_particles[:,3] = numpy.random.sample(self.count)
self.np_init_particles = self.np_particles
elif len(grid[0,:]) == 3:
self.np_particles[:,0:3] = grid
self.np_particles[:,3] = numpy.random.sample(self.count)
self.np_init_particles = self.np_particles
self.gl_particles = vbo.VBO(data=self.np_particles, usage=gl.GL_DYNAMIC_DRAW, target=gl.GL_ARRAY_BUFFER)
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();
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