def delete(self):
'''
Destroy this framebuffer and free allocated resources.
'''
gl.glDeleteFramebuffersEXT(1, [self._buffer])
gl.glDeleteTextures(1, [self.rgb_texture])
self._buffer = None
def set_current(self):
if not self.canvas:
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
glu_info.set_active_context()
# Implement workarounds
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
for attr, check in self._workaround_checks:
setattr(self, attr, check(self._info))
# Release textures on this context scheduled for deletion
if self.object_space._doomed_textures:
textures = self.object_space._doomed_textures
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space._doomed_textures = []
# Release buffers on this context scheduled for deletion
if self.object_space._doomed_buffers:
buffers = self.object_space._doomed_buffers
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space._doomed_buffers = []
def delete(self):
for buffer in self.buffers:
if self.buffers[buffer] is not None:
if buffer != 'texture':
gl.glDeleteBuffers(1, self.buffers[buffer])
else:
gl.glDeleteTextures(1, self.buffers['texture'])
def set_data(self, arr):
arr = np.asarray(arr)
self.src_format, self.dst_format = fmts_from_shape(arr.shape,
self._texture_dim)
# Float is default type
if arr.dtype == np.uint8:
arr = np.ascontiguousarray(arr)
self.src_type = gl.GL_UNSIGNED_BYTE
elif arr.dtype == np.float32:
arr = np.ascontiguousarray(arr)
self.src_type = gl.GL_FLOAT
else:
arr = np.astype(np.float32)
self.src_type = gl.GL_FLOAT
self._arr = arr
if self._id:
gl.glDeleteTextures(1, gl.byref(self._id))
id = gl.GLuint()
gl.glGenTextures(1, gl.byref(id))
self._id = id
gl.glPixelStorei (gl.GL_UNPACK_ALIGNMENT, 1)
gl.glPixelStorei (gl.GL_PACK_ALIGNMENT, 1)
gl.glBindTexture (self.target, self._id)
gl.glTexParameterf (self.target,
gl.GL_TEXTURE_MIN_FILTER, gl.GL_NEAREST)
gl.glTexParameterf (self.target,
gl.GL_TEXTURE_MAG_FILTER, gl.GL_NEAREST)
gl.glTexParameterf (self.target, gl.GL_TEXTURE_WRAP_S, gl.GL_CLAMP)
gl.glTexParameterf (self.target, gl.GL_TEXTURE_WRAP_T, gl.GL_CLAMP)
self._setup_tex()
self.update()
def set_current(self):
if not self.canvas:
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
# Release Textures, Buffers, and VAOs on this context scheduled for
# deletion. Note that the garbage collector may introduce a race
# condition, so operate on a copy, and clear the list afterwards.
if self.object_space.doomed_textures:
textures = self.object_space.doomed_textures[:]
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space.doomed_textures.clear()
if self.object_space.doomed_buffers:
buffers = self.object_space.doomed_buffers[:]
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space.doomed_buffers.clear()
if self.object_space.doomed_vaos:
vaos = self.object_space.doomed_vaos[:]
vaos = (gl.GLuint * len(vaos))(*vaos)
gl.glDeleteVertexArrays(len(vaos), vaos)
self.object_space.doomed_vaos.clear()
def set_current(self):
if not self.canvas:
self.is_ok = 0
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
glu_info.set_active_context()
# Implement workarounds
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
for attr, check in self._workaround_checks:
setattr(self, attr, check(self._info))
# Release textures and buffers on this context scheduled for deletion.
# Note that the garbage collector may introduce a race condition,
# so operate on a copy of the textures/buffers and remove the deleted
# items using list slicing (which is an atomic operation)
if self.object_space._doomed_textures:
textures = self.object_space._doomed_textures[:]
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space._doomed_textures[0:len(textures)] = []
if self.object_space._doomed_buffers:
buffers = self.object_space._doomed_buffers[:]
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space._doomed_buffers[0:len(buffers)] = []
def gl_free(self):
"""
Returns e.g. GL_TEXTURE_2D - the thing to be enabled to make this
texture work with the fixed function pipeline.
"""
print("Deleting texture number " + self.handle)
glDeleteTextures(1, self.handle)
def set_current(self):
if not self.canvas:
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
glu_info.set_active_context()
# Implement workarounds
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
for attr, check in self._workaround_checks:
setattr(self, attr, check(self._info))
# Release textures and buffers on this context scheduled for deletion.
# Note that the garbage collector may introduce a race condition,
# so operate on a copy of the textures/buffers and remove the deleted
# items using list slicing (which is an atomic operation)
if self.object_space._doomed_textures:
textures = self.object_space._doomed_textures[:]
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space._doomed_textures[0:len(textures)] = []
if self.object_space._doomed_buffers:
buffers = self.object_space._doomed_buffers[:]
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space._doomed_buffers[0:len(buffers)] = []
def gl_free(self):
"""
Returns e.g. GL_TEXTURE_2D - the thing to be enabled to make this
texture work with the fixed function pipeline.
"""
print("Deleting texture number " + self.handle)
glDeleteTextures(1, self.handle)
def release(texture_id):
# If we have no context, then we are shutting down, so skip this
if gl.current_context is None:
return
if texture_id.value != 0:
gl.glDeleteTextures(1, byref(texture_id))
def set_current(self):
if not self.canvas:
raise RuntimeError('Canvas has not been attached')
# XXX not per-thread
gl.current_context = self
# XXX
gl_info.set_active_context()
glu_info.set_active_context()
# Implement workarounds
if not self._info:
self._info = gl_info.GLInfo()
self._info.set_active_context()
for attr, check in self._workaround_checks:
setattr(self, attr, check(self._info))
# Release textures on this context scheduled for deletion
if self.object_space._doomed_textures:
textures = self.object_space._doomed_textures
textures = (gl.GLuint * len(textures))(*textures)
gl.glDeleteTextures(len(textures), textures)
self.object_space._doomed_textures = []
# Release buffers on this context scheduled for deletion
if self.object_space._doomed_buffers:
buffers = self.object_space._doomed_buffers
buffers = (gl.GLuint * len(buffers))(*buffers)
gl.glDeleteBuffers(len(buffers), buffers)
self.object_space._doomed_buffers = []
def deleteTexture(texture):
"""Free the resources associated with a texture. This invalidates the
texture's ID.
Returns
-------
:obj:`None'
"""
GL.glDeleteTextures(1, texture.id)
def destroy(self):
"""Free memory"""
if self.initialized:
byref = ctypes.byref
if self.framebuffer_id:
gl.glDeleteFramebuffersEXT(1, byref(self.framebuffer_id))
if self.depthbuffer_id:
gl.glDeleteRenderbuffersEXT(1, byref(self.depthbuffer_id))
if self.texture_id:
gl.glDeleteTextures(1, byref(self.texture_id))
self.initialized = False
def release(ctx: "Context", glo: gl.GLuint):
"""
Destroy the texture.
This is called automatically when the object is garbage collected.
:param arcade.gl.Context ctx: OpenGL Context
:param gl.GLuint glo: The OpenGL texture id
"""
# If we have no context, then we are shutting down, so skip this
if gl.current_context is None:
return
if glo.value != 0:
gl.glDeleteTextures(1, byref(glo))
ctx.stats.decr("texture")
def _invalidate_device_objects(self):
if self._vao_handle.value > -1:
gl.glDeleteVertexArrays(1, byref(self._vao_handle))
if self._vbo_handle.value > -1:
gl.glDeleteBuffers(1, byref(self._vbo_handle))
if self._elements_handle.value > -1:
gl.glDeleteBuffers(1, byref(self._elements_handle))
self._vao_handle = self._vbo_handle = self._elements_handle = 0
gl.glDeleteProgram(self._shader_handle)
self._shader_handle = 0
if self._font_texture.value > -1:
gl.glDeleteTextures(1, byref(self._font_texture))
self.io.fonts.texture_id = 0
self._font_texture = 0
def __del__(self):
self._face=None
if self.atlas.texid:
glDeleteTextures(1, self.atlas.texid)
self.atlas.texid=None
self.atlas=None
if self.charcode2displaylist:
for dl in self.charcode2displaylist.values():
glDeleteLists(dl, 1)
self.charcode2displaylist.clear()
self.charcode2displaylist=None
if self.charcode2glyph:
self.charcode2glyph.clear()
self.charcode2glyph=None
if self.charcode2unichr:
self.charcode2unichr.clear()
self.charcode2unichr=None
def __del__(self):
self._face=None
if self.atlas.texid:
glDeleteTextures(1, self.atlas.texid)
self.atlas.texid=None
self.atlas=None
if self.charcode2displaylist:
for dl in self.charcode2displaylist.values():
glDeleteLists(dl, 1)
self.charcode2displaylist.clear()
self.charcode2displaylist=None
if self.charcode2glyph:
self.charcode2glyph.clear()
self.charcode2glyph=None
if self.charcode2unichr:
self.charcode2unichr.clear()
self.charcode2unichr=None
def delete_texture(self, texture_id):
"""Safely delete a texture belonging to this context.
Usually, the texture is released immediately using
``glDeleteTextures``, however if another context that does not share
this context's object space is currently active, the deletion will
be deferred until an appropriate context is activated.
:Parameters:
`texture_id` : int
The OpenGL name of the texture to delete.
"""
if self.object_space is gl.current_context.object_space:
id = gl.GLuint(texture_id)
gl.glDeleteTextures(1, id)
else:
self.object_space._doomed_textures.append(texture_id)
def delete_texture(self, texture_id):
'''Safely delete a texture belonging to this context.
Usually, the texture is released immediately using
``glDeleteTextures``, however if another context that does not share
this context's object space is currently active, the deletion will
be deferred until an appropriate context is activated.
:Parameters:
`texture_id` : int
The OpenGL name of the texture to delete.
'''
if self.object_space is gl.current_context.object_space:
id = gl.GLuint(texture_id)
gl.glDeleteTextures(1, id)
else:
self.object_space._doomed_textures.append(texture_id)
def refresh_font_texture(self):
# save texture state
last_texture = gl.GLint()
gl.glGetIntegerv(gl.GL_TEXTURE_BINDING_2D, byref(last_texture))
width, height, pixels = self.io.fonts.get_tex_data_as_rgba32()
if self._font_texture is not None:
gl.glDeleteTextures(1, self._font_texture)
self._font_texture = gl.GLuint()
gl.glGenTextures(1, byref(self._font_texture))
gl.glBindTexture(gl.GL_TEXTURE_2D, self._font_texture)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA, width, height, 0, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, pixels)
self.io.fonts.texture_id = self._font_texture
gl.glBindTexture(gl.GL_TEXTURE_2D, cast((c_int*1)(last_texture), POINTER(c_uint)).contents)
self.io.fonts.clear_tex_data()
def __del__(self):
if self.__value is not None:
buf = ct.c_uint()
buf.value = self.__value
gl.glDeleteTextures(1, ct.byref(buf))
def delete(self):
gl.glDeleteTextures(1, self.name)
def __del__(self):
if self._id:
gl.glDeleteTextures(1, gl.byref(self._id))
def deleteTexture(self):
if self.texid:
glDeleteTextures(1, self.texid)
self.texid=None
def createFBO(width, height, colorFormat=GL.GL_RGBA8):
"""Generate a new Framebuffer object (FBO) for use as a render target.
Parameters
----------
width : :obj:`int`
Buffer width in pixels.
height : :obj:`int`
Buffer height in pixels.
colorFormat : :obj:`int`
Format for color renderbuffer data (e.g. GL_RGBA8).
Returns
-------
:obj:`list` of :obj:`int`
List of OpenGL ids (FBO, Color Texture, Depth/Stencil RB).
Examples
--------
# create a FBO
frameBuffer, frameTexture, stencilTexture = createFBO(
800, 600, GL.GL_RGBA32F_ARB)
GL.glBindFramebuffer(GL.GL_FRAMEBUFFER, frameBuffer) # bind it
"""
# Create a texture render target for color data, same _setupFramebuffer()
#
# We should avoid creating a texture here in the future since we might want
# to bind an existing texture from elsewhere and reuse the same FBO.
#
colorTextureId = GL.GLuint()
GL.glGenTextures(1, ctypes.byref(colorTextureId))
GL.glBindTexture(GL.GL_TEXTURE_2D, colorTextureId)
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)
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, colorFormat, int(width), int(height),
0, GL.GL_RGBA, GL.GL_FLOAT, None)
GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
fboId = GL.GLuint()
GL.glGenFramebuffers(1, ctypes.byref(fboId))
# attach texture to the frame buffer
GL.glFramebufferTexture2D(GL.GL_FRAMEBUFFER, GL.GL_COLOR_ATTACHMENT0,
GL.GL_TEXTURE_2D, colorTextureId, 0)
# create depth and stencil render buffers
depthRbId = GL.GLuint()
GL.glGenRenderbuffers(1, ctypes.byref(depthRbId))
GL.glBindRenderbuffer(GL.GL_RENDERBUFFER, depthRbId)
GL.glRenderbufferStorage(GL.GL_RENDERBUFFER, GL.GL_DEPTH24_STENCIL8,
int(width), int(height))
GL.glFramebufferRenderbuffer(GL.GL_FRAMEBUFFER, GL.GL_DEPTH_ATTACHMENT,
GL.GL_RENDERBUFFER, depthRbId)
GL.glFramebufferRenderbuffer(GL.GL_FRAMEBUFFER, GL.GL_STENCIL_ATTACHMENT,
GL.GL_RENDERBUFFER, depthRbId)
GL.glBindRenderbuffer(GL.GL_RENDERBUFFER, 0)
# clear VRAM garbage
GL.glClear(GL.GL_STENCIL_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT
| GL.GL_STENCIL_BUFFER_BIT)
GL.glBindFramebuffer(GL.GL_FRAMEBUFFER, 0)
# check completeness
if not checkFramebufferComplete(fboId):
# delete the framebuffer and all the resources associated with it
GL.glDeleteTextures(1, colorTextureId)
GL.glDeleteRenderbuffers(1, depthRbId)
GL.glDeleteFramebuffers(1, fboId)
raise RuntimeError('Failed to create a framebuffer. Exiting.')
return fboId, colorTextureId, depthRbId
