Ubuntu Manpage: icetEnable,icetDisable-- enable/disable an IceT feature.

Provided by: paraview_5.7.0-4ubuntu9_amd64

NAME

       icetEnable,icetDisable-- enable/disable an IceT feature.

Synopsis

       #include <IceT.h>

       void icetEnable    (   IceTEnum   pname  );
       void icetDisable   (   IceTEnum   pname  );

Description

The icetEnableand icetDisablefunctions turn various IceT features on and off. pname is a
symbolic constant representing the feature to be turned on or off. Valid values for pname
are:

ICET_COLLECT_IMAGES
When this option is on (the default) images partitions are always collected to
display processes. When this option is turned off, the strategy has the option of
leaving images partitioned among processes. Each process containing part of a
tile's image will return the entire buffer from icetDrawFrame, icetGLDrawFrame, or
icetCompositeImage in an IceTImage object. However, only certain pixels will be
valid. The state variables ICET_VALID_PIXELS_TILE, ICET_VALID_PIXELS_OFFSET, and
ICET_VALID_PIXELS_NUM give which tile the pixels belong to and what range of pixels
are valid.

ICET_COMPOSITE_ONE_BUFFER
Turn this option on when performing z-buffer compositing of a color image and the
only result you need is the color image itself (not the depth buffer). This is
common if you are just creating an image and are not interested in doing depth
queries. This option is on by default.

ICET_CORRECT_COLORED_BACKGROUND
Colored backgrounds are problematic when performing color blended compositing in
that the background color will be additively blended from each image. Enabling this
flag will internally cause the color to be reset to black and then cause the color
to be blended back into the resulting images. This flag is disabled by default.

ICET_FLOATING_VIEWPORT
.igfloating viewport If enabled, the projection will be shifted such that the
geometry will be rendered in one shot whenever possible, even if the geometry
straddles up to four tiles. This flag is enabled by default.

ICET_INTERLACE_IMAGES
If enabled, pixels in images (might be) shuffled to better load balance the
compositing work. This flag is enabled by default.

ICET_ORDERED_COMPOSITE
If enabled, the image composition will be performed in the order specified by the
last call to icetCompositeOrder, assuming the current strategy (specified by a call
to icetStrategy) supports ordered composition. Generally, you want to enable
ordered compositing if doing color blending and disable if you are doing z-buffer
comparisons. If enabled, you should call icetCompositeOrder between each frame to
update the image order as camera angles change. This flag is disabled by default.

ICET_RENDER_EMPTY_IMAGES
If disabled, IceT will never invoke the drawing callback.igdrawing callback if all
geometry is outside the clipping planes of the current projection. If enabled, IceT
will still invoke the drawing callback if the compositing strategy has requested
the tile. However, most compositing strategies do not request images for all tiles.
The floating viewport can also consolidate up to four renderings into one. To
ensure that the drawing callback is invoked for all tiles on all processes, enable
ICET_RENDER_EMPTY_IMAGES, disable ICET_FLOATING_VIEWPORT, and set the strategy
(using icetStrategy) to ICET_STRATEGY_SEQUENTIAL. This flag is disabled by
default.

In addition, if you are using the OpenGL layer (i.e., have called icetGLInitialize), these
options, defined in IceTGL.h, are also available.

ICET_GL_DISPLAY
If enabled, the final, composited image for each tile is written back to the frame
buffer before the return of icetGLDrawFrame. This flag is enabled by default.

ICET_GL_DISPLAY_COLORED_BACKGROUND
If this and ICET_GL_DISPLAY are enabled, IceT uses OpenGL blending to ensure that
all background is set to the correct color. This flag is disabled by default. This
option does not affect the images returned from icetGLDrawFrame; it only affects
the image in the OpenGL color buffer.

ICET_GL_DISPLAY_INFLATE
If this and ICET_GL_DISPLAY are enabled and the renderable window is larger than
the displayed tile (as determined by the current OpenGL viewport), then resample
the image to fit within the renderable window before writing back to frame buffer.
This flag is disabled by default. This option does not affect the images returned
from icetGLDrawFrame; it only affects the image in the OpenGL color buffer. If this
option is not enabled, then images are written at their natural size in the lower
left corner of the window.

ICET_GL_DISPLAY_INFLATE_WITH_HARDWARE
This option determines how images are inflated. When enabled (the default), images
are inflated by creating a texture and allowing the hardware to inflate the image.
When disabled, images are inflated on the CPU. This option has no effect unless
both ICET_GL_DISPLAY and ICET_GL_DISPLAY_INFLATE are also enabled.

Errors

       ICET_INVALID_VALUE
               If pname is not a feature to be enabled or disabled.

Warnings

       None.

Bugs

       The check for a valid pname is not thorough, and thus the ICET_INVALID_VALUE error may not
       always be raised.

Copyright

       Copyright (C)2003 Sandia Corporation

       Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government
       retains certain rights in this software.

       This source code is released under the New BSD License.