Signature
Parameters
| Variables | Description |
|---|---|
| target |
Specifies the target to which the framebuffer is bound
for
glFramebufferParameteri
.
|
| framebuffer |
Specifies the name of the framebuffer object for
glNamedFramebufferParameteri
.
|
| pname |
Specifies the framebuffer parameter to be modified.
|
| param |
The new value for the parameter named
pname
.
|
Description
glFramebufferParameteri
and
glNamedFramebufferParameteri
modify the
value of the parameter named
pname
in the
specified framebuffer object. There are no modifiable parameters
of the default draw and read framebuffer, so they are not valid
targets of these commands.
For
glFramebufferParameteri
,
the framebuffer object is that bound to
target
, which must be
GL_DRAW_FRAMEBUFFER
,
GL_READ_FRAMEBUFFER
or
GL_FRAMEBUFFER
.
GL_FRAMEBUFFER
is equivalent to
GL_DRAW_FRAMEBUFFER
.
For
glNamedFramebufferParameteri
,
framebuffer
is the name of the
framebuffer object.
pname
specifies the parameter to be
modified. The following values are accepted:
- GL_FRAMEBUFFER_DEFAULT_WIDTH
-
param specifies the assumed with for a framebuffer object with no attachments. If a framebuffer has attachments then the width of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_WIDTH is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_WIDTH .
- GL_FRAMEBUFFER_DEFAULT_HEIGHT
-
param specifies the assumed height for a framebuffer object with no attachments. If a framebuffer has attachments then the height of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_HEIGHT is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_HEIGHT .
- GL_FRAMEBUFFER_DEFAULT_LAYERS
-
param specifies the assumed number of layers for a framebuffer object with no attachments. If a framebuffer has attachments then the layer count of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_LAYERS is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_LAYERS .
- GL_FRAMEBUFFER_DEFAULT_SAMPLES
-
param specifies the assumed number of samples in a framebuffer object with no attachments. If a framebuffer has attachments then the sample count of those attachments is used, otherwise the value of GL_FRAMEBUFFER_DEFAULT_SAMPLES is used for the framebuffer. param must be greater than or equal to zero and less than or equal to the value of GL_MAX_FRAMEBUFFER_SAMPLE .
- GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
-
param specifies whether the framebuffer should assume identical sample locations and the same number of samples for all texels in the virtual image. If param is zero, then the implementation may vary the position or the count of samples within the virtual image from pixel to pixel, otherwise it will use the same sample position and count for all pixels in the virtual image.
Errors
GL_INVALID_ENUM
is generated by
glFramebufferParameteri
if
target
is not one of the accepted
framebuffer targets.
GL_INVALID_OPERATION
is generated by
glFramebufferParameteri
if the default
framebuffer is bound to
target
.
GL_INVALID_OPERATION
is generated by
glNamedFramebufferParameteri
if
framebuffer
is not the name of an
existing framebuffer object.
GL_INVALID_VALUE
is generated if
pname
is
GL_FRAMEBUFFER_DEFAULT_WIDTH
and
param
is less than zero or greater than
the value of
GL_MAX_FRAMEBUFFER_WIDTH
.
GL_INVALID_VALUE
is generated if
pname
is
GL_FRAMEBUFFER_DEFAULT_HEIGHT
and
param
is less than zero or greater than
the value of
GL_MAX_FRAMEBUFFER_HEIGHT
.
Associated Gets
Version Support
| glFramebufferParameteri | |
| glNamedFramebufferParameteri |
See Also
Copyright
Copyright
2013-2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
http://opencontent.org/openpub/
.