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 buildCopImageDataTexture(self):
if not cl.have_gl():
raise BaseException("No OpenGL interop !!!")
if self.node:
# bind texture from current compy node
cl_image_buffer = self.node.getCookedData()
glBindTexture(GL_TEXTURE_2D, self.node_gl_tex_id)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, self.node.xRes(), self.node.yRes(), 0, GL_RGB, GL_FLOAT, None)
logger.debug("Node size to display: %s %s" % (self.node.xRes(), self.node.yRes()))
node_gl_texture = cl.GLTexture(hou.openclContext(), cl.mem_flags.WRITE_ONLY, GL_TEXTURE_2D, 0, self.node_gl_tex_id, 2)
# Aquire OpenGL texture object
cl.enqueue_acquire_gl_objects(hou.openclQueue(), [node_gl_texture])
# copy OpenCL buffer to OpenGl texture
cl.enqueue_copy_image(hou.openclQueue(), cl_image_buffer, node_gl_texture, (0,0), (0,0), (self.node.xRes(), self.node.yRes()), wait_for=None)
# Release OpenGL texturte object
cl.enqueue_release_gl_objects(hou.openclQueue(), [node_gl_texture])
hou.openclQueue().finish()
glGenerateMipmap(GL_TEXTURE_2D) #Generate mipmaps now!!!
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR)
glBindTexture(GL_TEXTURE_2D, 0)
def _init_OGL(self):
# Create an openGL texture
glEnable(GL_TEXTURE_2D)
glGenerateMipmap(GL_TEXTURE_2D)
textureID = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, textureID)
# Bind it
# Create a texture array and send it to opengl
m_texture = np.zeros((self.nx, self.ny, 4),
dtype=np.float32) # An nx*ny*4 array
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
# 1D texture
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
# 2D texture
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, self.nx, self.ny, 0, GL_RGBA,
GL_UNSIGNED_BYTE, m_texture)
# Setting the projection
glMatrixMode(GL_PROJECTION)
glOrtho(0, self.win_width, 0, self.win_height, -1, 1)
glMatrixMode(GL_MODELVIEW)
# Set the opengl blend option
glClearColor(0.01, 0.01, 0.01, 1.)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glEnable(GL_BLEND)
# Create OpenCL memory object from gl texture
self.textureMem = cl.GLTexture(self.lbm_ocl.ocl_d.ctx,
cl.mem_flags.READ_WRITE, GL_TEXTURE_2D,
0, textureID, 2)
def buildCopImageDataTexture(self):
if not self.node:
return
image_width, image_height = self.node.xRes(), self.node.yRes()
logger.debug("Node size to display: %s %s" %
(image_width, image_height))
cl_image = self.node.getCookedData()
cl_ctx = hou.OpenCL.context()
cl_queue = hou.OpenCL.queue()
event = None
glBindTexture(GL_TEXTURE_2D, self.node_gl_tex_id)
if cl.have_gl():
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, image_width,
image_height, 0, GL_RGB, GL_FLOAT, None)
node_gl_texture = cl.GLTexture(cl_ctx, cl.mem_flags.WRITE_ONLY,
GL_TEXTURE_2D, 0,
self.node_gl_tex_id, 2)
# Aquire OpenGL texture object
cl.enqueue_acquire_gl_objects(cl_queue, [node_gl_texture])
# copy OpenCL buffer to OpenGl texture
cl.enqueue_copy_image(cl_queue,
cl_image,
node_gl_texture, (0, 0), (0, 0),
(image_width, image_height),
wait_for=(event, ))
# Release OpenGL texturte object
cl.enqueue_release_gl_objects(cl_queue, [node_gl_texture])
hou.openclQueue().finish()
else:
mapped_buff = cl.enqueue_map_image(cl_queue, cl_image,
cl.map_flags.READ, (0, 0),
(image_width, image_height),
(image_height, image_width, 4),
np.float32, 'C')
texture_data = mapped_buff[0].copy()
mapped_buff[0].base.release(cl_queue)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, image_width,
image_height, 0, GL_RGBA, GL_FLOAT, texture_data)
glGenerateMipmap(GL_TEXTURE_2D) #Generate mipmaps now!!!
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_LINEAR_MIPMAP_LINEAR)
glBindTexture(GL_TEXTURE_2D, 0)
self.rebuild_node_image = False
def cl_init(self):
self.cl_init_context()
cur_dir = os.path.dirname(os.path.abspath(__file__))
with open('%s/curvature_flow.cl' % cur_dir) as f:
from mako.template import Template
code = str(
Template(f.read()).render(
window_size=self.window_size,
# smoothing timestep
dt=self.smoothing_dt,
projection_matrix=self.projection_matrix))
self.prg = cl.Program(self.ctx, code).build()
self.depth_cl = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0,
self.depth_target.texture, 2)
self.depth2_cl = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0,
self.depth2_target.texture, 2)
self.test_cl = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0, self.test_target.texture,
2)
self.cl_gl_objects = [self.depth_cl, self.depth2_cl, self.test_cl]
# local work size: (lw, lh) where lw (lh) must divide window width (height).
lw, lh = 16, 16
local_size_limit = min(device.max_work_group_size
for device in self.ctx.devices)
if lw * lh > local_size_limit:
import sys
sys.stderr.write(
'Warning: work group size too large, try reducing it. Until then, we are letting OpenCL implementation can pick something.\n'
)
self.cl_local_size = None
else:
assert self.window_size[0] % lw == 0 and self.window_size[
1] % lh == 0, "Window width (height) must be divisible by %i (%i)" % (
lw, lh)
self.cl_local_size = (lw, lh)
def __init__(self, texture, tex_dim, world):
self.tex_dim = tex_dim
self.world = world
self.clinit()
self.loadProgram("raytrace.cl")
world.init_cldata(self.ctx)
self.tex = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0, texture, 2)
self.gl_objects = [self.tex]
def __init__(self, gl_image, gl_lapl_mask):
platform = cl.get_platforms()[0]
self.ctx = cl.Context(
properties=[(cl.context_properties.PLATFORM, platform)] +
get_gl_sharing_context_properties(),
devices=None)
self.queue = cl.CommandQueue(self.ctx)
self.program = cl.Program(self.ctx, kernel_code).build()
self.shape = gl_image.shape[1], gl_image.shape[0]
self.cl_image = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0, gl_image._id, 2)
self.cl_lapl_mask = cl.GLTexture(self.ctx, cl.mem_flags.READ_ONLY,
GL_TEXTURE_2D, 0, gl_lapl_mask._id, 2)
if self.use_gl_texture_as_tmp:
self.gl_tmp = Texture2D(gl_image.data)
self.cl_tmp = cl.GLTexture(self.ctx, cl.mem_flags.READ_WRITE,
GL_TEXTURE_2D, 0, self.gl_tmp._id, 2)
else:
self.cl_tmp = cl.Image(
self.ctx, cl.mem_flags.READ_WRITE,
self.cl_image.get_image_info(cl.image_info.FORMAT), self.shape)
def init_openCL(self):
self.gl_program.draw(gloo.gl.GL_TRIANGLE_STRIP)
self.ocl_ctx = openCL.get_OCL_context()
print("OpenCL context on device: %s" % self.ocl_ctx.devices[0])
self.queue = pyopencl.CommandQueue(self.ocl_ctx)
self.ocl_prg = pyopencl.Program(self.ocl_ctx, src).build()
self.ary_float = pyopencl.array.empty(self.queue, shape=(self.tex_size,self.tex_size),dtype=numpy.float32)
self.ocl_tex = pyopencl.GLTexture(self.ocl_ctx, pyopencl.mem_flags.READ_WRITE,
gloo.gl.GL_TEXTURE_2D, 0, int(self.gl_tex.handle), 2)
img = numpy.random.randint(0,65000,self.tex_size**2).reshape((self.tex_size,self.tex_size)).astype(numpy.uint16)
self.ocl_ary = pyopencl.array.to_device(self.queue, img)
self.new_image(img)
def initialize_sim(self):
# Now that OpenGL is setup, we can initialize interop correctly...
self.sim_is_initialized = True
self.sim = lb_cl.Pipe_Flow(diameter=D,
rho=rho,
viscosity=nu,
pressure_grad=pressure_grad,
pipe_length=pipe_length,
N=N,
time_prefactor=1,
two_d_local_size=(32, 32),
three_d_local_size=(32, 32, 1),
use_interop=True)
print self.texture.id
self.texture.glir
gl_textureBuf = cl.GLTexture(self.sim.context, cl.mem_flags.READ_WRITE,
gloo.gl.GL_TEXTURE_2D, 0, self.texture.id)
# Replace "v" with the GL texture
self.sim.v = gl_textureBuf
def test_clgl_texture_interop(gl_context, cl_context):
"""Tests that an OpenGL texture can be used in an OpenCL kernel."""
from scipy.misc import lena
img = np.dstack([lena() / 256.] * 3).astype(np.float32)
hei, wid = img.shape[:2]
gl_img = Texture2D(img, mipmap=True, context=gl_context)
cl_img = cl.GLTexture(cl_context, cl.mem_flags.READ_ONLY, gl.GL_TEXTURE_2D,
1, gl_img._id, 2)
cl_queue = cl.CommandQueue(cl_context)
cl_program = cl.Program(cl_context, cl_source).build()
if True: # usable in loop
cl_gl_data = [cl_img]
cl.enqueue_acquire_gl_objects(cl_queue, cl_gl_data)
cl_args = [np.uint32(wid), np.uint32(hei), cl_img]
assert 3 == len(cl_args)
cl_program.run(cl_queue, (wid, hei), None, *cl_args)
cl.enqueue_release_gl_objects(cl_queue, cl_gl_data)
cl_queue.flush()
cl_queue.finish()
def __init__(self, lattice, origins):
self.lattice = lattice
self.context = self.lattice.context
self.queue = self.lattice.queue
self.float_type = self.lattice.memory.float_type
self.count = len(origins)
self.np_origins = numpy.ndarray(shape=(self.count, 2),
dtype=self.float_type)
for i, pos in enumerate(origins):
self.np_origins[i, :] = pos
self.cl_origins = cl.Buffer(self.context,
mf.READ_ONLY,
size=self.count * 2 *
numpy.float32(0).nbytes)
cl.enqueue_copy(self.queue, self.cl_origins, self.np_origins).wait()
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_streamlines = glGenTextures(1)
self.gl_texture_type = GL_TEXTURE_2D
glBindTexture(self.gl_texture_type, self.gl_streamlines)
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_LINEAR)
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)
self.cl_gl_streamlines = cl.GLTexture(self.lattice.context,
mf.READ_WRITE,
self.gl_texture_type, 0,
self.gl_streamlines, 2)
self.build_kernel()
def __init__(self, width=512, height=512):
self.sample = 0
self.width = width
self.height = height
self.tex = [_create_texture(width, height) for i in range(2)]
self.ctx = _create_context()
self.cache = ProgramCache(self.ctx)
self.queue = cl.CommandQueue(self.ctx)
mf = cl.mem_flags
self.buf = [
cl.GLTexture(self.ctx, mf.READ_WRITE, GL_TEXTURE_2D, 0, t, 2)
for t in self.tex
]
self.front = 0
ident = np.array([1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1],
np.float32)
self.cam_xform = cl.Buffer(self.ctx,
mf.READ_ONLY | mf.COPY_HOST_PTR,
hostbuf=ident)
self.env = _load_exr(self.ctx, 'images/MeadowTrail.exr')
def __init__(self, image_width, image_height, opencl_file, gl_image=None):
enable_gl_sharing = gl_image is not None
init_opencl(enable_gl_sharing)
with open(opencl_file, 'r') as f:
source = f.read()
self._program = cl.Program(
context,
source).build(options=['-I', f'"{os.path.dirname(opencl_file)}"'])
if gl_image is None:
shape = (image_height, image_width)
fmt = cl.ImageFormat(cl.channel_order.RGBA, cl.channel_type.UNORM_INT8)
self._result_image = cl.Image(context, mem.WRITE_ONLY, fmt, shape)
else:
from OpenGL.GL import GL_TEXTURE_2D
self._result_image = cl.GLTexture(context,
mem.WRITE_ONLY,
GL_TEXTURE_2D,
0,
gl_image,
dims=2)