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Diffstat (limited to 'silx/gui/_glutils/gl.py')
| -rw-r--r-- | silx/gui/_glutils/gl.py | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/silx/gui/_glutils/gl.py b/silx/gui/_glutils/gl.py deleted file mode 100644 index 608d9ce..0000000 --- a/silx/gui/_glutils/gl.py +++ /dev/null @@ -1,168 +0,0 @@ -# coding: utf-8 -# /*########################################################################## -# -# Copyright (c) 2014-2017 European Synchrotron Radiation Facility -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -# THE SOFTWARE. -# -# ###########################################################################*/ -"""This module loads PyOpenGL and provides a namespace for OpenGL.""" - -__authors__ = ["T. Vincent"] -__license__ = "MIT" -__date__ = "25/07/2016" - - -from contextlib import contextmanager as _contextmanager -from ctypes import c_uint -import logging - -_logger = logging.getLogger(__name__) - -import OpenGL -# Set the following to true for debugging -if _logger.getEffectiveLevel() <= logging.DEBUG: - _logger.debug('Enabling PyOpenGL debug flags') - OpenGL.ERROR_LOGGING = True - OpenGL.ERROR_CHECKING = True - OpenGL.ERROR_ON_COPY = True -else: - OpenGL.ERROR_LOGGING = False - OpenGL.ERROR_CHECKING = False - OpenGL.ERROR_ON_COPY = False - -import OpenGL.GL as _GL -from OpenGL.GL import * # noqa - -# Extentions core in OpenGL 3 -from OpenGL.GL.ARB import framebuffer_object as _FBO -from OpenGL.GL.ARB.framebuffer_object import * # noqa -from OpenGL.GL.ARB.texture_rg import GL_R32F, GL_R16F # noqa -from OpenGL.GL.ARB.texture_rg import GL_R16, GL_R8 # noqa - -# PyOpenGL 3.0.1 does not define it -try: - GLchar -except NameError: - from ctypes import c_char - GLchar = c_char - - -def testGL(): - """Test if required OpenGL version and extensions are available. - - This MUST be run with an active OpenGL context. - """ - version = glGetString(GL_VERSION).split()[0] # get version number - major, minor = int(version[0]), int(version[2]) - if major < 2 or (major == 2 and minor < 1): - raise RuntimeError( - "Requires at least OpenGL version 2.1, running with %s" % version) - - from OpenGL.GL.ARB.framebuffer_object import glInitFramebufferObjectARB - from OpenGL.GL.ARB.texture_rg import glInitTextureRgARB - - if not glInitFramebufferObjectARB(): - raise RuntimeError( - "OpenGL GL_ARB_framebuffer_object extension required !") - - if not glInitTextureRgARB(): - raise RuntimeError("OpenGL GL_ARB_texture_rg extension required !") - - -# Additional setup -if hasattr(glget, 'addGLGetConstant'): - glget.addGLGetConstant(GL_FRAMEBUFFER_BINDING, (1,)) - - -@_contextmanager -def enabled(capacity, enable=True): - """Context manager enabling an OpenGL capacity. - - This is not checking the current state of the capacity. - - :param capacity: The OpenGL capacity enum to enable/disable - :param bool enable: - True (default) to enable during context, False to disable - """ - if bool(enable) == glGetBoolean(capacity): - # Already in the right state: noop - yield - elif enable: - glEnable(capacity) - yield - glDisable(capacity) - else: - glDisable(capacity) - yield - glEnable(capacity) - - -def disabled(capacity, disable=True): - """Context manager disabling an OpenGL capacity. - - This is not checking the current state of the capacity. - - :param capacity: The OpenGL capacity enum to disable/enable - :param bool disable: - True (default) to disable during context, False to enable - """ - return enabled(capacity, not disable) - - -# Additional OpenGL wrapping - -def glGetActiveAttrib(program, index): - """Wrap PyOpenGL glGetActiveAttrib""" - bufsize = glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH) - length = GLsizei() - size = GLint() - type_ = GLenum() - name = (GLchar * bufsize)() - - _GL.glGetActiveAttrib(program, index, bufsize, length, size, type_, name) - return name.value, size.value, type_.value - - -def glDeleteRenderbuffers(buffers): - if not hasattr(buffers, '__len__'): # Support single int argument - buffers = [buffers] - length = len(buffers) - _FBO.glDeleteRenderbuffers(length, (c_uint * length)(*buffers)) - - -def glDeleteFramebuffers(buffers): - if not hasattr(buffers, '__len__'): # Support single int argument - buffers = [buffers] - length = len(buffers) - _FBO.glDeleteFramebuffers(length, (c_uint * length)(*buffers)) - - -def glDeleteBuffers(buffers): - if not hasattr(buffers, '__len__'): # Support single int argument - buffers = [buffers] - length = len(buffers) - _GL.glDeleteBuffers(length, (c_uint * length)(*buffers)) - - -def glDeleteTextures(textures): - if not hasattr(textures, '__len__'): # Support single int argument - textures = [textures] - length = len(textures) - _GL.glDeleteTextures((c_uint * length)(*textures)) |