def flush(self):
if not self.objectIndex:
return
GL.glVertexAttribPointer(
texCoordAttribute,
2,
GL.GL_FLOAT,
GL.GL_TRUE,
4 * self.vboData.itemsize,
ctypes.c_void_p(2 * self.vboData.itemsize)
)
GL.glVertexAttribPointer(
positionAttribute,
2,
GL.GL_FLOAT,
GL.GL_FALSE,
4 * self.vboData.itemsize,
ctypes.c_void_p(0)
)
GL.glBufferSubData(
GL.GL_ARRAY_BUFFER,
0,
16 * self.objectIndex * self.vboData.itemsize,
self.vboData,
)
GL.glDrawElements(
GL.GL_TRIANGLES,
6 * self.objectIndex,
GL.GL_UNSIGNED_SHORT,
ctypes.c_void_p(0),
)
self.objectIndex = 0
def __setitem__(self, key, value):
with self.bound:
sz = len(self)
if isinstance(key, slice):
start = int(key.start) if key.start is not None else 0
stop = int(key.stop) if key.stop is not None else start + value.size
else:
start = int(key)
stop = start + 1
if start < 0 or stop < 0 or start >= stop:
raise IndexError
if stop > sz:
newsz = max(sz * 2, stop)
a = numpy.empty((newsz,), dtype=self.dtype)
GL.glGetBufferSubData(GL.GL_ARRAY_BUFFER, 0,
sz * self.dtype.itemsize,
a.ctypes.data)
b = numpy.asarray(value).reshape(-1)
a[start:stop] = b
GL.glBufferData(GL.GL_ARRAY_BUFFER, newsz * self.dtype.itemsize,
a.ctypes.data, self.usage)
else:
a = numpy.ascontiguousarray(value, self.dtype).reshape(-1)
sz = min((stop - start), len(a))
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, start * self.dtype.itemsize,
sz * self.dtype.itemsize, a)
def update_buffer_data(self, name, buffer_data):
vbo = self.buffers[name]
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
buffer_data = buffer_data.tobytes()
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, len(buffer_data),
buffer_data)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
def updateBackground(self):
""" Updates the Background image """
if self.str:
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, self.pbo)
GL.glBufferSubData( GL.GL_PIXEL_UNPACK_BUFFER , 0 , self.str.current())
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, 0)
self.updateGL()
def set_rays(self, rays: Sequence[np.ndarray], colors: Iterable = None):
assert all(ray.ndim == 2 and ray.shape[1] == 3 for ray in rays)
num_points = sum(ray.shape[0] for ray in rays)
if num_points > self.max_num_points:
raise ValueError(
f'Number of points {num_points} is greater than max. number of points {self.max_num_points}.'
)
if colors is None:
colors = itertools.repeat((1, 0, 0))
buffer_data = np.empty((num_points, 3), dtype=np.float32)
first = 0
indices = []
for ray in rays:
count = ray.shape[0]
buffer_data[first:first + count, :] = ray
indices.append((first, count))
first += count
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.point_buffer)
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, 0, buffer_data.nbytes,
buffer_data.ravel().view(np.ubyte))
self.indices = indices
self.colors = colors
def vbo_arrow_draw(self):
if self.buffers is None:
self.buffers = self.create_vbo()
else:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffers[0])
try:
gl.glBufferSubData(
gl.GL_ARRAY_BUFFER, 0,
len(self.structure_vbo[self.i]) * 12,
np.array(self.structure_vbo[self.i],
dtype='float32').flatten())
except ValueError as e:
print(
e
) # watch out for setting array element with a sequence erorr
print(len(self.structure_vbo[self.i]),
len(self.structure_vbo[self.i][0]))
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffers[1])
# later move to set_i function so that reference changes
# does not cause buffer rebinding
gl.glBufferSubData(
gl.GL_ARRAY_BUFFER, 0, self.color_buffer_len * 4,
np.array(self.color_vectors[self.i],
dtype='float32').flatten())
self.draw_vbo()
def updateBackground(self):
""" Updates the Background image """
if self.str:
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, self.pbo)
GL.glBufferSubData(GL.GL_PIXEL_UNPACK_BUFFER, 0,
self.str.current())
GL.glBindBuffer(GL.GL_PIXEL_UNPACK_BUFFER, 0)
self.updateGL()
def data(self, value):
try:
binding = next(iter(self.buffer.active_bindings))
except StopIteration:
raise RuntimeError("Sub-buffer contents can only be set if the buffer is bound.")
value.dtype = self.dtype.base
value.shape = self.dtype.shape
GL.glBufferSubData(binding, self.offset, value.nbytes, value)
def update(self, data, offset=0, size=None):
''' Send new data to this GL buffer. '''
dbuf, dsize = GLBuffer._raw(data)
size = size or dsize
if size > self.buf_size:
print('GLBuffer: Warning, trying to send more data to buffer than allocated size.')
gl.glBindBuffer(self.target, self.buf_id)
gl.glBufferSubData(self.target, offset, min(self.buf_size, size), dbuf)
def set_sub_data(self, data):
"""
:type data: np.array
:param data:
:return:
"""
self.bind()
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, data.nbytes, data)
def init_grid(self,):
self.grid_vao = gl.glGenVertexArrays(1)
self.grid_vbo = gl.glGenBuffers(1)
gl.glBindVertexArray(self.grid_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.grid_vbo)
posisitions = np.array([
1.0, 0.0, -1.0, 1.0,
1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, -1.0, 1.0,
1.0, 0.0, -1.0, 1.0,
-1.0, 0.0, 0.0, 1.0,
1.0, 0.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
-1.0, 1.0, 0.0, 1.0,
-1.0, 0.0, 0.0, 1.0,
0.0, 0.0, -1.0, 1.0,
0.0, 1.0, -1.0, 1.0,
0.0, 1.0, 1.0, 1.0,
0.0, 1.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0,
0.0, 0.0, -1.0, 1.0,
], dtype=np.float32)
colors = np.array( [ 1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
], dtype=np.float32)
gl.glBufferData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size) * 4, None, gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
self.grid_size = posisitions.size
def init_grid(self,):
self.grid_vao = gl.glGenVertexArrays(1)
self.grid_vbo = gl.glGenBuffers(1)
gl.glBindVertexArray(self.grid_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.grid_vbo)
posisitions = np.array([
1.0, 0.0, -1.0, 1.0,
1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, 1.0, 1.0,
-1.0, 0.0, -1.0, 1.0,
1.0, 0.0, -1.0, 1.0,
-1.0, 0.0, 0.0, 1.0,
1.0, 0.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
-1.0, 1.0, 0.0, 1.0,
-1.0, 0.0, 0.0, 1.0,
0.0, 0.0, -1.0, 1.0,
0.0, 1.0, -1.0, 1.0,
0.0, 1.0, 1.0, 1.0,
0.0, 1.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0,
0.0, 0.0, -1.0, 1.0,
], dtype=np.float32)
colors = np.array( [ 1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
1.0, 0.0, 0.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 0.0, 1.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
0.0, 1.0, 0.0, 0.2,
], dtype=np.float32)
gl.glBufferData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size) * 4, None, gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
self.grid_size = posisitions.size
def AdjustVertexData(fXOffset, fYOffset):
global vertexPositions
n = len(vertexPositions)
fNewData = N.copy(vertexPositions)
# do this with slices!
for iVertex in N.arange(0,n,4):
fNewData[iVertex] += fXOffset
fNewData[iVertex+1] += fYOffset
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, positionBufferObject)
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, 0, fNewData)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
def adjust_vert_data(self):
moveit = VERTICES[:]
for i in range(0,len(VERTICES),4):
moveit[i] += self.offset[0]
moveit[i+1] += self.offset[1]
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
ArrayType = (GL.GLfloat*len(VERTICES))
Array = ArrayType(*moveit)
GL.glBufferSubData(GL.GL_ARRAY_BUFFER,0,len(VERTICES)*SIZE_FLOAT,Array)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,0)
def update_data(self, offset, data=None):
# type: (int, Optional[Union[bytes, bytearray]]) -> None
GL.glBindVertexArray(self.vao)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
if data is None:
data = self.array
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, offset, len(data), data)
GL.glBindVertexArray(0)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
def vbo_cubic_draw(self):
if self.buffers is None:
self.buffers = self.create_vbo()
else:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffers[1])
# later move to set_i function so that reference changes
# does not cause buffer rebinding
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, self.buffer_len,
np.array(self.color_vectors[self.i],
dtype='float32').flatten())
self.draw_vbo()
def update_gl(self):
if not self._initialized: self.init_gl()
translate = self.primitive.attributes['translate']
values = translate.tobytes()
try:
gl.glNamedBufferSubData(self.primitive.buffers['translate'], 0,
len(values), values)
except OpenGL.error.NullFunctionError as e:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER,
self.primitive.buffers['translate'])
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, len(values), values)
def _update(self):
""" Upload all pending data to GPU. """
if self.base is not None:
return
if self._need_resize:
self._resize()
self._need_resize = False
log("GPU: Updating buffer (%d pending operation(s))" % len(self._pending_data))
while self._pending_data:
data, nbytes, offset = self._pending_data.pop(0)
gl.glBufferSubData(self._target, offset, nbytes, data)
def adjustVertexData(self, x_offset, y_offset):
verts = self.vertexPositions[:]
for i in xrange(0,len(verts),4):
verts[i] += x_offset
verts[i+1] += y_offset
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,self.positionBufferObject)
ArrayType = (GL.GLfloat*len(self.vertexPositions))
array = ArrayType(*verts)
GL.glBufferSubData(
GL.GL_ARRAY_BUFFER,
0,
len(self.vertexPositions)*self.vertex_size,
array)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER,0)
def _update(self):
""" Upload all pending data to GPU. """
if self.base is not None:
return
if self._need_resize:
self._resize()
self._need_resize = False
log("GPU: Updating buffer (%d pending operation(s))" %
len(self._pending_data))
while self._pending_data:
data, nbytes, offset = self._pending_data.pop(0)
gl.glBufferSubData(self._target, offset, nbytes, data)
def update_buffer(buf_id, data, offset=0, target=gl.GL_ARRAY_BUFFER):
global msg1282
try:
gl.glBindBuffer(target, buf_id)
gl.glBufferSubData(target, offset, data.nbytes, data)
except Exception as err:
if err.err==1282:
if not msg1282:
print("update_buffer: Communication aborted (1282)")
msg1282 = True
else:
print("update_buffer in glhelpers.py: Could not update buffer due to GLError code:",\
err.err)
def update_buffer(buf_id, data, offset=0, target=gl.GL_ARRAY_BUFFER):
global msg1282
try:
gl.glBindBuffer(target, buf_id)
gl.glBufferSubData(target, offset, data.nbytes, data)
except Exception as err:
if err.err == 1282:
if not msg1282:
print("update_buffer: Communication aborted (1282)")
msg1282 = True
else:
print("update_buffer in glhelpers.py: Could not update buffer due to GLError code:",\
err.err)
def setMask(self, filter=None):
# set the correct filter/mask
if filter is None:
if self.default_mask is None:
data = self.data
self.current_mask = np.ones(self.dataLen, dtype=bool)
else:
data = self.data[self.default_mask]
self.current_mask = self.default_mask
else:
data = self.data[filter]
self.current_mask = filter
self.dataLen = data.shape[0]
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffer)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, data.nbytes, data)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
def vbo_arrow_draw(self):
if self.buffers is None:
self.buffers = self.create_vbo()
else:
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffers[0])
gl.glBufferSubData(
gl.GL_ARRAY_BUFFER, 0, self.inter_buffer_len,
np.array(self.interleaved[self.i], dtype='float32').flatten())
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffers[1])
gl.glBufferSubData(
gl.GL_ARRAY_BUFFER, 0, self.color_buffer_len,
np.array(self.color_vectors[self.i],
dtype='float32').flatten())
self.standard_vbo_draw()
def setMask(self, filter=None):
# set the correct filter/mask
if filter is None:
if self.default_mask is None:
data = self.data
self.current_mask = np.ones(self.dataLen, dtype=bool)
else:
data = self.data[self.default_mask]
self.current_mask = self.default_mask
else:
data = self.data[filter]
self.current_mask = filter
self.dataLen = data.shape[0]
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.buffer)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, data.nbytes, data)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
def set_data( self, data, offset = 0 ):
"""Populates the buffer with the specified data.
The buffer must be allocated before data can be set.
:raise ValueError: Raised if the buffer is not currently bound.
:raise OverflowError: Raised if the data size exceeds the buffer's bounds.
.. seealso:: `py:func:pygly.vertex_buffer.Buffer.allocate`
"""
if not self.bound:
raise ValueError( "Buffer is not bound" )
if (offset + data.nbytes) > self.nbytes:
raise OverflowError( "Data would overflow buffer" )
GL.glBufferSubData( self.target, offset, data.nbytes, data )
def set_data( self, data, offset = 0 ):
"""Populates the buffer with the specified data.
The buffer must be allocated before data can be set.
:raise ValueError: Raised if the buffer is not currently bound.
:raise OverflowError: Raised if the data size exceeds the buffer's bounds.
.. seealso:: `py:func:pygly.vertex_buffer.Buffer.allocate`
"""
if not self.bound:
raise ValueError( "Buffer is not bound" )
if (offset + data.nbytes) > self.nbytes:
raise OverflowError( "Data would overflow buffer" )
GL.glBufferSubData( self.target, offset, data.nbytes, data )
def refresh_gcode_object(self,):
if not self.gcode_done and time.time() - self._last_updateTime >= 4.0:
gl.glBindVertexArray(self.gcode_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.gcode_vbo)
status, pos, col = self.npgcr.get_current()
if status is "Complete":
self.gcode_done = True
posisitions = np.array(pos, dtype=np.float32)
scale = 1.0 / np.amax(posisitions)
scale = np.array([scale, scale, scale, 1.0], dtype=np.float32)
posisitions = posisitions * scale
colors = np.array(col, dtype=np.float32)
gl.glBufferData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size) * 4, None, gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
self.gcode_size = posisitions.size
self._last_updateTime = time.time()
def update_model_color(self):
line_c = []
profile_start = time.time()
line_c = self.model_channel_buffer[self.channel]
LOG.debug(
f"update model color iterate {time.time() - profile_start:0.2f}")
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.line_buffer_color)
profile_start = time.time()
GL.glBufferSubData(
GL.GL_ARRAY_BUFFER,
self.model_layer_chunks[0][0] * POSITION_VECTOR_SIZE *
VERTEX_SIZE_BYTES,
np.array(line_c, dtype='float32'),
)
LOG.debug(
f"update model color GL.glBufferSubData {time.time() - profile_start:0.2f}"
)
def refresh_gcode_object(self,):
if not self.gcode_done and time.time() - self._last_updateTime >= 4.0:
gl.glBindVertexArray(self.gcode_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.gcode_vbo)
status, pos, col = self.npgcr.get_current()
if status is "Complete":
self.gcode_done = True
posisitions = np.array(pos, dtype=np.float32)
scale = 1.0 / np.amax(posisitions)
scale = np.array([scale, scale, scale, 1.0], dtype=np.float32)
posisitions = posisitions * scale
colors = np.array(col, dtype=np.float32)
gl.glBufferData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size) * 4, None, gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
self.gcode_size = posisitions.size
self._last_updateTime = time.time()
def _load_text(self, text, color):
posisitions = []
colors = []
texture_coords = []
texture_spacing = 1.0 / 510.0
y_pos = self.window_height - (self.kern + self.text_height)
x_pos = self.kern
for char in text:
if "\n" == char:
y_pos -= self.text_height + self.kern
x_pos = self.kern
else:
x1 = x_pos
y1 = y_pos + self.text_height
x2 = x1 + self.text_width
y2 = y_pos
posisitions += self.square([x1, y1], [x2, y2])
letter_start = (ord(char) * 2.0 * texture_spacing)
colors += [color for i in range(0, 6)]
texture_coords += self.square(
[letter_start, 1], [letter_start + texture_spacing, 0])
x_pos += self.text_width + self.kern
posisitions = np.array(posisitions, dtype=np.float32).flatten()
colors = np.array(colors, dtype=np.float32).flatten()
texture_coords = np.array(texture_coords, dtype=np.float32).flatten()
gl.glBindVertexArray(self.text_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.text_vbo)
gl.glBufferData(
gl.GL_ARRAY_BUFFER,
(posisitions.size + colors.size + texture_coords.size) * 4, None,
gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER,
(posisitions.size + colors.size) * 4,
texture_coords)
self.text_size = posisitions.size
self.color_size = colors.size
def _load_text(self, text, color):
posisitions = []
colors = []
texture_coords = []
texture_spacing = 1.0 / 510.0
y_pos = self.window_height - (self.kern + self.text_height)
x_pos = self.kern
for char in text:
if "\n" == char:
y_pos -= self.text_height + self.kern
x_pos = self.kern
else:
x1 = x_pos
y1 = y_pos + self.text_height
x2 = x1 + self.text_width
y2 = y_pos
posisitions += self.square([x1, y1], [x2, y2])
letter_start = (ord(char) * 2.0 * texture_spacing)
colors += [color for i in range(0, 6)]
texture_coords += self.square([letter_start, 1], [letter_start + texture_spacing, 0])
x_pos += self.text_width + self.kern
posisitions = np.array(posisitions, dtype=np.float32).flatten()
colors = np.array(colors, dtype=np.float32).flatten()
texture_coords = np.array(texture_coords, dtype=np.float32).flatten()
gl.glBindVertexArray(self.text_vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.text_vbo)
gl.glBufferData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size + texture_coords.size) * 4, None, gl.GL_STATIC_DRAW)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, posisitions)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, posisitions.size * 4, colors)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, (posisitions.size + colors.size) * 4, texture_coords)
self.text_size = posisitions.size
self.color_size = colors.size
def glBufferSubData(target, offset, data):
size = data.nbytes
GL.glBufferSubData(target, offset, size, data)
def setSlice(self, start, size, data):
"""
sets a slice of data.
"""
dataptr = ArrayDatatype.voidDataPointer( data )
gl.glBufferSubData( self.target, start, size, dataptr )
def glBufferSubData(target, offset, data):
size = data.nbytes
GL.glBufferSubData(target, offset, size, data)
def update_buffer(buf_id, data, offset=0, target=gl.GL_ARRAY_BUFFER):
gl.glBindBuffer(target, buf_id)
gl.glBufferSubData(target, offset, data.nbytes, data)
def loadData(self):
for i in self.sections:
vao = GL.glGenVertexArrays(1)
self.vaos.append(vao)
GL.glBindVertexArray(vao)
#Calculate how big the buffer needs to be
totalSize = 0
totalSize += i.vertices.size * i.vertices.itemsize
totalSize += i.normals.size * i.normals.itemsize
totalSize += i.texPos.size * i.texPos.itemsize
#generate the vertex attribute buffer (VBO)
attribsId = GL.glGenBuffers(1)
self.attribIds.append(attribsId)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, attribsId)
#Allocate the requisite space
GL.glBufferData(GL.GL_ARRAY_BUFFER, totalSize, None,
GL.GL_STATIC_DRAW)
#Put data in buffer
offset = 0
size = i.vertices.size * i.vertices.itemsize
GL.glBufferSubData(
GL.GL_ARRAY_BUFFER, #Type
offset, #Offset into the buffer to put our data
size, #How much data (in bytes) are we putting in?
i.vertices) #The data itself
offset += size
size = i.normals.size * i.normals.itemsize
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, offset, size, i.normals)
offset += size
size = i.texPos.size * i.texPos.itemsize
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, offset, size, i.texPos)
offset += size
#Index buffer creation
indexBuffer = GL.glGenBuffers(1)
self.iBuffers.append(indexBuffer)
#Populate index buffer
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBuffer)
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER,
i.indices.size * i.indices.itemsize, i.indices,
GL.GL_STATIC_DRAW)
#load textures
tex = GL.glGenTextures(1)
self.dTexIds.append(tex)
GL.glBindTexture(GL.GL_TEXTURE_2D, tex)
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, i.mtl.texSize[0],
i.mtl.texSize[1], 0, GL.GL_RGBA,
GL.GL_UNSIGNED_BYTE, i.mtl.diffuseTexture)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER,
GL.GL_LINEAR)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER,
GL.GL_LINEAR)
tex = GL.glGenTextures(1)
self.maskIds.append(tex)
GL.glBindTexture(GL.GL_TEXTURE_2D, tex)
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, i.mtl.maskSize[0],
i.mtl.maskSize[1], 0, GL.GL_RGBA,
GL.GL_UNSIGNED_BYTE, i.mtl.maskTexture)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER,
GL.GL_LINEAR)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER,
GL.GL_LINEAR)
def update_vao(self):
gl.glBindVertexArray(self._vao)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._vbo)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0,
self._vertices.nbytes,
self._vertices, gl.GL_DYNAMIC_DRAW)
def update(self, offset=0, size=None):
if size is None:
size = self.nbytes
gl.glBindBuffer(gl.GL_UNIFORM_BUFFER, self.ubo)
gl.glBufferSubData(gl.GL_UNIFORM_BUFFER, offset, size,
pointer(self.data))
def update(self, offset=0, size=None):
if size is None:
size = self.nbytes
gl.glBindBuffer(gl.GL_UNIFORM_BUFFER, self.ubo)
gl.glBufferSubData(gl.GL_UNIFORM_BUFFER, offset, size, self.pdata)
def update_buffer(buf_id, data, offset=0, target=gl.GL_ARRAY_BUFFER):
gl.glBindBuffer(target, buf_id)
gl.glBufferSubData(target, offset, data.nbytes, data)
def set_data(self, data, offset=0):
offset = offset + self._offset
with self:
GL.glBufferSubData(self._target, offset, data.nbytes, data)
def sync(self):
"""Flushes the cached data to OpenGL.
"""
with self:
GL.glBufferSubData(self._target, 0, self._data.nbytes, self._data)
def update_buffer_data(self, name, buffer_data):
vbo = self.buffers[name]
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
buffer_data = buffer_data.tobytes()
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, len(buffer_data), buffer_data)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
def sub_data(self, data_size, data):
self.bind()
GL.glBufferSubData(self.target, 0, data_size, data)
def update(self):
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self.vertex_buffer)
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, self.data.nbytes, self.data)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
def write(self, data: np.ndarray):
assert self.is_currently_bound()
assert data.nbytes == self.data_layout.itemsize
gl.glBufferSubData(gl.GL_ARRAY_BUFFER, 0, data.nbytes, data.data)
def update(self, data, start=0):
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.buffer)
GL.glBufferSubData(GL.GL_ARRAY_BUFFER, start * self.itemsize, data)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
def loadData(self): for i in self.sections: vao = GL.glGenVertexArrays(1) self.vaos.append(vao) GL.glBindVertexArray(vao) #Calculate how big the buffer needs to be totalSize = 0 totalSize += i.vertices.size * i.vertices.itemsize totalSize += i.normals.size * i.normals.itemsize totalSize += i.texPos.size * i.texPos.itemsize #generate the vertex attribute buffer (VBO) attribsId = GL.glGenBuffers(1) self.attribIds.append(attribsId) GL.glBindBuffer(GL.GL_ARRAY_BUFFER, attribsId) #Allocate the requisite space GL.glBufferData(GL.GL_ARRAY_BUFFER, totalSize, None, GL.GL_STATIC_DRAW) #Put data in buffer offset = 0 size = i.vertices.size * i.vertices.itemsize GL.glBufferSubData(GL.GL_ARRAY_BUFFER, #Type offset, #Offset into the buffer to put our data size, #How much data (in bytes) are we putting in? i.vertices) #The data itself offset += size size = i.normals.size * i.normals.itemsize GL.glBufferSubData(GL.GL_ARRAY_BUFFER, offset, size, i.normals) offset += size size = i.texPos.size * i.texPos.itemsize GL.glBufferSubData(GL.GL_ARRAY_BUFFER, offset, size, i.texPos) offset += size #Index buffer creation indexBuffer = GL.glGenBuffers(1) self.iBuffers.append(indexBuffer) #Populate index buffer GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBuffer) GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, i.indices.size * i.indices.itemsize, i.indices, GL.GL_STATIC_DRAW) #load textures tex = GL.glGenTextures(1) self.dTexIds.append(tex) GL.glBindTexture(GL.GL_TEXTURE_2D, tex) GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, i.mtl.texSize[0], i.mtl.texSize[1], 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, i.mtl.diffuseTexture) GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR) GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR) tex = GL.glGenTextures(1) self.maskIds.append(tex) GL.glBindTexture(GL.GL_TEXTURE_2D, tex) GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, i.mtl.maskSize[0], i.mtl.maskSize[1], 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, i.mtl.maskTexture) GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR) GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR)
