def bind_attributes(**attributes):
program_handle = glGetIntegerv(GL_CURRENT_PROGRAM)
vertices_count = 0
bound = []
for raw_name, values in attributes.items():
# attribute key: <attribute_name>(_(_[(o<attribute_offset>)|(d<divisor>)])+)?
name = raw_name
offset = 0
divisor = None
if '__' in raw_name:
name, modifiers = name.split('__')[0], name.split('__')[1]
for modifier in modifiers.split('_'):
key, value = modifier[0], modifier[1:]
if key == 'o':
offset = int(value)
elif key == 'd':
divisor = int(value)
location = glGetAttribLocation(program_handle, name)
if location < 0:
raise KeyError('Attribute not found: {} (from raw_name={})'.format(name, raw_name))
location += offset
if _np.isscalar(values):
glVertexAttrib1f(location, values)
elif isinstance(values, tuple):
gl_vertex_attrib_f = [glVertexAttrib1f, glVertexAttrib2f, glVertexAttrib3f, glVertexAttrib4f][len(values)-1]
gl_vertex_attrib_f(location, *values)
else:
if divisor is not None:
glVertexAttribDivisor(location, divisor)
else:
vertices_count = max(vertices_count, _np.prod(values.shape[:-1]))
glEnableVertexAttribArray(location)
if values.dtype == _np.float64:
values = values.astype(_np.float32)
if len(values.shape) == 1:
values = values.reshape(-1, 1) # [1, 2, ... n] -> [[1], [2], ... [n]]
item_size = values.shape[-1]
stride = values.strides[-2]
if isinstance(values, _BufferObject):
with values:
glVertexAttribPointer(location, item_size, _array_gl_type(values), GL_TRUE, stride, None)
else:
glVertexAttribPointer(location, item_size, _array_gl_type(values), GL_TRUE, stride, values)
bound.append((location, divisor))
yield vertices_count
for location, divisor in bound:
if divisor is not None:
glVertexAttribDivisor(location, 0)
glDisableVertexAttribArray(location)
def bind_attributes(**attributes):
program_handle = glGetIntegerv(GL_CURRENT_PROGRAM)
vertices_count = 0
bound = []
for raw_name, values in attributes.items():
# attribute key: <attribute_name>(_(_[(o<attribute_offset>)|(d<divisor>)])+)?
name = raw_name
offset = 0
divisor = None
if '__' in raw_name:
name, modifiers = name.split('__')[0], name.split('__')[1]
for modifier in modifiers.split('_'):
key, value = modifier[0], modifier[1:]
if key == 'o':
offset = int(value)
elif key == 'd':
divisor = int(value)
location = glGetAttribLocation(program_handle, name)
if location < 0:
raise KeyError('Attribute not found: {} (from raw_name={})'.format(name, raw_name))
location += offset
if _np.isscalar(values):
glVertexAttrib1f(location, values)
elif isinstance(values, tuple):
gl_vertex_attrib_f = [glVertexAttrib1f, glVertexAttrib2f, glVertexAttrib3f, glVertexAttrib4f][len(values)-1]
gl_vertex_attrib_f(location, *values)
else:
if divisor is not None:
glVertexAttribDivisor(location, divisor)
else:
vertices_count = max(vertices_count, _np.prod(values.shape[:-1]))
glEnableVertexAttribArray(location)
if values.dtype == _np.float64:
values = values.astype(_np.float32)
if len(values.shape) == 1:
values = values.reshape(-1, 1) # [1, 2, ... n] -> [[1], [2], ... [n]]
item_size = values.shape[-1]
stride = values.strides[-2]
if isinstance(values, _BufferObject):
with values:
glVertexAttribPointer(location, item_size, _array_gl_type(values), GL_TRUE, stride, None)
else:
glVertexAttribPointer(location, item_size, _array_gl_type(values), GL_TRUE, stride, values)
bound.append((location, divisor))
yield vertices_count
for location, divisor in bound:
if divisor is not None:
glVertexAttribDivisor(location, 0)
glDisableVertexAttribArray(location)
def locate_attribute(self, name):
return glGetAttribLocation(self._handle, name)
def locate_attribute(self, name):
return glGetAttribLocation(self._handle, name)
