def glGetTexImage( target, level,format,type, outputType=str ): """Get a texture-level as an image target -- enum constant for the texture engine to be read level -- the mip-map level to read format -- image format to read out the data type -- data-type into which to read the data outputType -- default (str) provides string output of the results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True and type == GL_UNSIGNED_BYTE. Any other value will cause output in the default array output format. returns the pixel data array in the format defined by the format, type and outputType """ from OpenGL.GL import glget dims = [glget.glGetTexLevelParameteriv( target, level, simple.GL_TEXTURE_WIDTH )] if target != simple.GL_TEXTURE_1D: dims.append( glget.glGetTexLevelParameteriv( target, level, simple.GL_TEXTURE_HEIGHT ) ) if target != simple.GL_TEXTURE_2D: dims.append( glget.glGetTexLevelParameteriv( target, level, simple.GL_TEXTURE_DEPTH ) ) array = images.SetupPixelRead( format, tuple(dims), type ) arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[ images.TYPE_TO_ARRAYTYPE.get(type,type) ] simple.glGetTexImage( target, level, format, type, ctypes.c_void_p( arrayType.dataPointer(array)) ) if outputType is str: return images.returnFormat( array, type ) else: return array
def glGetTexImage(target, level, format, type, array=None, outputType=bytes):
"""Get a texture-level as an image
target -- enum constant for the texture engine to be read
level -- the mip-map level to read
format -- image format to read out the data
type -- data-type into which to read the data
array -- optional array/offset into which to store the value
outputType -- default (bytes) provides string output of the
results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True
and type == GL_UNSIGNED_BYTE. Any other value will cause
output in the default array output format.
returns the pixel data array in the format defined by the
format, type and outputType
"""
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[images.TYPE_TO_ARRAYTYPE.get(
type, type)]
if array is None:
dims = _get_texture_level_dims(target, level)
array = imageData = images.SetupPixelRead(format, tuple(dims), type)
owned = True
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
owned = False
GL_1_1.glGetTexImage(target, level, format, type, imageData)
if outputType is bytes:
return images.returnFormat(array, type)
else:
return array
def glReadPixels(x,
y,
width,
height,
format,
type=type,
array=None,
outputType=bytes):
"""Read specified pixels from the current display buffer
This typed version returns data in your specified default
array data-type format, or in the passed array, which will
be converted to the array-type required by the format.
"""
x, y, width, height = asInt(x), asInt(y), asInt(width), asInt(height)
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[
images.TYPE_TO_ARRAYTYPE.get(type, type)]
if array is None:
array = imageData = images.SetupPixelRead(format, (width, height),
type)
owned = True
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
owned = False
GL_1_1.glReadPixels(x, y, width, height, format, type, imageData)
if owned and outputType is bytes:
return images.returnFormat(array, type)
else:
return array
def glReadPixels( x,y,width,height,format,type, outputType=str ): """Read specified pixels from the current display buffer x,y,width,height -- location and dimensions of the image to read from the buffer format -- pixel format for the resulting data type -- data-format for the resulting data outputType -- default (str) provides string output of the results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True and type == GL_UNSIGNED_BYTE. Any other value will cause output in the default array output format. returns the pixel data array in the format defined by the format, type and outputType """ x,y,width,height = asInt(x),asInt(y),asInt(width),asInt(height) array = images.SetupPixelRead( format, (width,height), type ) arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[ images.TYPE_TO_ARRAYTYPE.get(type,type) ] imageData = arrayType.dataPointer(array) simple.glReadPixels( x,y,width,height, format,type, ctypes.c_void_p( imageData ) ) if outputType is str: return images.returnFormat( array, type ) else: return array
def glReadPixels( x,y,width,height,format,type=type, array=None, outputType=bytes ):
"""Read specified pixels from the current display buffer
This typed version returns data in your specified default
array data-type format, or in the passed array, which will
be converted to the array-type required by the format.
"""
x,y,width,height = asInt(x),asInt(y),asInt(width),asInt(height)
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[ images.TYPE_TO_ARRAYTYPE.get(type,type) ]
if array is None:
array = imageData = images.SetupPixelRead( format, (width,height), type )
owned = True
else:
if isinstance( array, integer_types):
imageData = ctypes.c_void_p( array )
else:
array = arrayType.asArray( array )
imageData = arrayType.voidDataPointer( array )
owned = False
GL_1_1.glReadPixels(
x,y,
width, height,
format,type,
imageData
)
if owned and outputType is bytes:
return images.returnFormat( array, type )
else:
return array
def glGetTexImage(target,
level,
format,
type,
array=None,
outputType=bytes):
"""bug fixed overwirte version"""
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[
images.TYPE_TO_ARRAYTYPE.get(type, type)]
if array is None:
dims = OpenGLContext._get_texture_level_dims(target, level)
imageData = images.SetupPixelRead(format, tuple(dims), type)
array = imageData
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
GL_1_1.glGetTexImage(target, level, format, type, imageData)
if outputType is bytes:
return images.returnFormat(array, type)
else:
return array
def glGetTexImage(target, level, format, type, array=None, outputType=bytes):
"""Get a texture-level as an image
target -- enum constant for the texture engine to be read
level -- the mip-map level to read
format -- image format to read out the data
type -- data-type into which to read the data
array -- optional array/offset into which to store the value
outputType -- default (bytes) provides string output of the
results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True
and type == GL_UNSIGNED_BYTE. Any other value will cause
output in the default array output format.
returns the pixel data array in the format defined by the
format, type and outputType
"""
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[images.TYPE_TO_ARRAYTYPE.get(type, type)]
if array is None:
dims = _get_texture_level_dims(target, level)
array = imageData = images.SetupPixelRead(format, tuple(dims), type)
owned = True
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
owned = False
GL_1_1.glGetTexImage(target, level, format, type, imageData)
if outputType is bytes:
return images.returnFormat(array, type)
else:
return array
def glReadPixels(x, y, width, height, format, type, array=None, outputType=bytes):
"""Read specified pixels from the current display buffer
x,y,width,height -- location and dimensions of the image to read
from the buffer
format -- pixel format for the resulting data
type -- data-format for the resulting data
array -- optional array/offset into which to store the value
outputType -- default (bytes) provides string output of the
results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True
and type == GL_UNSIGNED_BYTE. Any other value will cause
output in the default array output format.
returns the pixel data array in the format defined by the
format, type and outputType
"""
x, y, width, height = asInt(x), asInt(y), asInt(width), asInt(height)
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[images.TYPE_TO_ARRAYTYPE.get(type, type)]
if array is None:
array = imageData = images.SetupPixelRead(format, (width, height), type)
owned = True
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
owned = False
GL_1_1.glReadPixels(x, y, width, height, format, type, imageData)
if owned and outputType is bytes:
return images.returnFormat(array, type)
else:
return array
def glReadPixels(x,
y,
width,
height,
format,
type,
array=None,
outputType=bytes):
"""Read specified pixels from the current display buffer
x,y,width,height -- location and dimensions of the image to read
from the buffer
format -- pixel format for the resulting data
type -- data-format for the resulting data
array -- optional array/offset into which to store the value
outputType -- default (bytes) provides string output of the
results iff OpenGL.UNSIGNED_BYTE_IMAGES_AS_STRING is True
and type == GL_UNSIGNED_BYTE. Any other value will cause
output in the default array output format.
returns the pixel data array in the format defined by the
format, type and outputType
"""
x, y, width, height = asInt(x), asInt(y), asInt(width), asInt(height)
arrayType = arrays.GL_CONSTANT_TO_ARRAY_TYPE[images.TYPE_TO_ARRAYTYPE.get(
type, type)]
if array is None:
array = imageData = images.SetupPixelRead(format, (width, height),
type)
owned = True
else:
if isinstance(array, integer_types):
imageData = ctypes.c_void_p(array)
else:
array = arrayType.asArray(array)
imageData = arrayType.voidDataPointer(array)
owned = False
GL_1_1.glReadPixels(x, y, width, height, format, type, imageData)
if owned and outputType is bytes:
return images.returnFormat(array, type)
else:
return array
