def _update(self):
# If we use a 3D texture, we need an extension
if self._target == gl.ext.GL_TEXTURE_3D:
if not ext_available('GL_texture_3D'):
raise TextureError('3D Texture not available.')
# Need to update data?
if self._pending_data:
pendingData, self._pending_data = self._pending_data, None
# Process pending data
self._process_pending_data(*pendingData)
# If not ok, warn (one time)
if not gl.glIsTexture(self._handle):
self._handle = 0
print('Warning enabling texture, the texture is not valid.')
return
# Need to update some regions?
while self._pending_subdata:
pendingData = self._pending_subdata.pop(0)
# Process pending data
self._process_pending_data(*pendingData)
# Check
if not gl.glIsTexture(self._handle):
raise TextureError('This should not happen (texture is invalid)')
# Need to update any parameters?
self._activate()
while self._pending_params:
param, value = self._pending_params.popitem()
gl.glTexParameter(self._target, param, value)
def _update(self):
# If we use a 3D texture, we need an extension
if self._target == gl.ext.GL_TEXTURE_3D:
if not ext_available('GL_texture_3D'):
raise TextureError('3D Texture not available.')
# Need to update data?
if self._pending_data:
pendingData, self._pending_data = self._pending_data, None
# Process pending data
self._process_pending_data(*pendingData)
# If not ok, warn (one time)
if not gl.glIsTexture(self._handle):
self._handle = 0
print('Warning enabling texture, the texture is not valid.')
return
# Need to update some regions?
while self._pending_subdata:
pendingData = self._pending_subdata.pop(0)
# Process pending data
self._process_pending_data(*pendingData)
# Check
if not gl.glIsTexture(self._handle):
raise TextureError('This should not happen (texture is invalid)')
# Need to update any parameters?
self._activate()
while self._pending_params:
param, value = self._pending_params.popitem()
gl.glTexParameter(self._target, param, value)
def on_initialize(self, event):
gl.glClearColor(1,1,1,1)
gl.glEnable(gl.GL_DEPTH_TEST)
# Create shader program
self._prog_handle = gl.glCreateProgram()
# Create vertex shader
shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(shader, VERT_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Vertex shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Create fragment shader
shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(shader, FRAG_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Fragment shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Link
gl.glLinkProgram(self._prog_handle)
status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Program did not link.')
# Create texture
im = io.crate()
self._tex_handle = gl.glGenTextures(1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB,
im.shape[1], im.shape[0], 0, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, im)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
if use_buffers:
# Create vertex buffer
self._positions_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._positions_handle)
gl.glBufferData(gl.GL_ARRAY_BUFFER, positions.nbytes, positions, gl.GL_DYNAMIC_DRAW)
#
self._texcoords_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._texcoords_handle)
gl.glBufferData(gl.GL_ARRAY_BUFFER, texcoords.nbytes, texcoords, gl.GL_DYNAMIC_DRAW)
# Create buffer for faces
self._faces_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._faces_handle)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, faces.nbytes, faces, gl.GL_DYNAMIC_DRAW)
def on_initialize(self, event):
gl.glClearColor(0, 0, 0, 1)
# Enable blending
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
# Note: normal GL requires these lines, ES 2.0 does not
from OpenGL import GL
gl.glEnable(GL.GL_VERTEX_PROGRAM_POINT_SIZE)
gl.glEnable(GL.GL_POINT_SPRITE)
# Create shader program
self._prog_handle = gl.glCreateProgram()
# Create vertex shader
shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(shader, VERT_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Vertex shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Create fragment shader
shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(shader, FRAG_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Fragment shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Link
gl.glLinkProgram(self._prog_handle)
status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Program did not link.')
# Create texture
self._tex_handle = gl.glGenTextures(1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_LUMINANCE, im1.shape[1],
im1.shape[0], 0, gl.GL_LUMINANCE, gl.GL_FLOAT,
im1.astype(np.float32))
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_LINEAR)
# Create vertex buffer
self._vbo_handle = gl.glGenBuffers(1)
def on_initialize(self, event):
gl.glClearColor(0,0,0,1);
# Enable blending
gl.glEnable(gl.GL_BLEND)
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
# Note: normal GL requires these lines, ES 2.0 does not
from OpenGL import GL
gl.glEnable(GL.GL_VERTEX_PROGRAM_POINT_SIZE)
gl.glEnable(GL.GL_POINT_SPRITE)
# Create shader program
self._prog_handle = gl.glCreateProgram()
# Create vertex shader
shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(shader, VERT_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Vertex shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Create fragment shader
shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(shader, FRAG_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Fragment shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Link
gl.glLinkProgram(self._prog_handle)
status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Program did not link.')
# Create texture
self._tex_handle = gl.glGenTextures(1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_LUMINANCE,
im1.shape[1], im1.shape[0], 0, gl.GL_LUMINANCE, gl.GL_FLOAT,
im1.astype(np.float32))
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
# Create vertex buffer
self._vbo_handle = gl.glGenBuffers(1)
def _process_pending_data(self, data, offset, level, format, clim):
""" Process the pending data. Uploading the data (i.e. create
a new texture) or updating it (a subsection).
"""
if isinstance(data, np.ndarray):
# Convert data type to one supported by OpenGL
data = convert_data(data, clim)
# Set shape
shape = data.shape
# If data is of same shape as current texture, update is much faster
if not offset:
MAP = {gl.GL_TEXTURE_2D: 2, gl.ext.GL_TEXTURE_3D: 3}
ndim = MAP.get(self._target, 0)
if data.shape == self._texture_shape and self._valid:
offset = [0 for i in self._texture_shape[:ndim]]
elif isinstance(data, tuple):
# Set shape
shape = data
else:
raise TextureError('data is not a valid type, should not happen!')
# Determine format (== internalformat)
if format is None:
format = get_format(shape, self._target)
if offset:
# Update: fast!
gl.glBindTexture(self._target, self._handle)
if self._handle <= 0 or not gl.glIsTexture(self._handle):
raise TextureError(
'Cannot update texture if there is no texture.')
self._upload_subdata(data, offset, format, level)
else:
# (re)upload: slower
if self._valid:
# We delete the existing texture first. In theory this
# should not be necessary, but some implementations cause
# memory leaks otherwise.
self.delete()
self._create()
# Upload!
self._activate()
if isinstance(data, tuple):
self._allocate_storage(shape, format, level)
else:
self._upload_data(data, format, level)
# Set all parameters that the user set
for param, value in self._texture_params.items():
gl.glTexParameter(self._target, param, value)
self._pending_params = {} # We just applied all
def _update(self):
# If we use a 3D texture, we need an extension
if self._target == gl.ext.GL_TEXTURE_3D:
if not ext_available('GL_texture_3D'):
raise TextureError('3D Texture not available.')
# For each level ...
for texLevel in self._levels.values():
# Need to resize?
if texLevel.need_resize:
texLevel.need_resize = False
new_texture_created = False
if self._valid and len(self._levels) == 1:
# We delete the existing texture first. In theory this
# should not be necessary, but some implementations cause
# memory leaks otherwise.
new_texture_created = True
self.delete()
self._create()
# Allocate texture on GPU
gl.glBindTexture(self._target, self._handle) #self._activate()
self._allocate_shape(texLevel)
# If not ok, warn (one time)
if not gl.glIsTexture(self._handle):
self._handle = 0
print('Warning enabling texture, the texture is not valid.')
return
if new_texture_created:
# We have a new texture: apply all parameters that were set
for param, value in self._texture_params.items():
gl.glTexParameter(self._target, param, value)
self._pending_params = {} # We just applied all
# Need to update some data?
while texLevel.pending_data:
data, clim, offset = texLevel.pending_data.pop(0)
# Apply clim and convert data type to one supported by OpenGL
data = convert_data(data, clim)
# Upload
gl.glBindTexture(self._target, self._handle) # self._activate()
self._upload_data(data, texLevel, offset)
# Check
#if not gl.glIsTexture(self._handle):
# raise TextureError('This should not happen (texture is invalid)')
# Need to update any parameters?
gl.glBindTexture(self._target, self._handle) # self._activate()
while self._pending_params:
param, value = self._pending_params.popitem()
gl.glTexParameter(self._target, param, value)
def _process_pending_data(self, data, offset, level, format, clim):
""" Process the pending data. Uploading the data (i.e. create
a new texture) or updating it (a subsection).
"""
if isinstance(data, np.ndarray):
# Convert data type to one supported by OpenGL
data = convert_data(data, clim)
# Set shape
shape = data.shape
# If data is of same shape as current texture, update is much faster
if not offset:
MAP = {gl.GL_TEXTURE_2D:2, gl.ext.GL_TEXTURE_3D:3}
ndim = MAP.get(self._target, 0)
if data.shape == self._texture_shape and self._valid:
offset = [0 for i in self._texture_shape[:ndim]]
elif isinstance(data, tuple):
# Set shape
shape = data
else:
raise TextureError('data is not a valid type, should not happen!')
# Determine format (== internalformat)
if format is None:
format = get_format(shape, self._target)
if offset:
# Update: fast!
gl.glBindTexture(self._target, self._handle)
if self._handle <= 0 or not gl.glIsTexture(self._handle):
raise TextureError('Cannot update texture if there is no texture.')
self._upload_subdata(data, offset, format, level)
else:
# (re)upload: slower
if self._valid:
# We delete the existing texture first. In theory this
# should not be necessary, but some implementations cause
# memory leaks otherwise.
self.delete()
self._create()
# Upload!
self._activate()
if isinstance(data, tuple):
self._allocate_storage(shape, format, level)
else:
self._upload_data(data, format, level)
# Set all parameters that the user set
for param, value in self._texture_params.items():
gl.glTexParameter(self._target, param, value)
self._pending_params = {} # We just applied all
def on_initialize(self, event):
gl.glClearColor(1, 1, 1, 1)
gl.glEnable(gl.GL_DEPTH_TEST)
# Create shader program
self._prog_handle = gl.glCreateProgram()
# Create vertex shader
shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
gl.glShaderSource(shader, VERT_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Vertex shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Create fragment shader
shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
gl.glShaderSource(shader, FRAG_CODE)
gl.glCompileShader(shader)
status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Fragment shader did not compile.')
else:
gl.glAttachShader(self._prog_handle, shader)
# Link
gl.glLinkProgram(self._prog_handle)
status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
if not status:
# We could show more useful info here, but that takes a few lines
raise RuntimeError('Program did not link.')
# Create texture
im = io.crate()
self._tex_handle = gl.glGenTextures(1)
gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB, im.shape[1],
im.shape[0], 0, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, im)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER,
gl.GL_LINEAR)
gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER,
gl.GL_LINEAR)
if use_buffers:
# Create vertex buffer
self._positions_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._positions_handle)
gl.glBufferData(gl.GL_ARRAY_BUFFER, positions.nbytes, positions,
gl.GL_DYNAMIC_DRAW)
#
self._texcoords_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._texcoords_handle)
gl.glBufferData(gl.GL_ARRAY_BUFFER, texcoords.nbytes, texcoords,
gl.GL_DYNAMIC_DRAW)
# Create buffer for faces
self._faces_handle = gl.glGenBuffers(1)
gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._faces_handle)
gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, faces.nbytes, faces,
gl.GL_DYNAMIC_DRAW)
