glInvalidateFramebuffer — invalidate the content some or all of a framebuffer object's attachments
void glInvalidateFramebuffer( | GLenum target, |
| GLsizei numAttachments, | |
const GLenum * attachments); |
target
The target to which the framebuffer is attached. target must be
GL_FRAMEBUFFER, GL_DRAW_FRAMEBUFFER, or GL_READ_FRAMEBUFFER.
numAttachments
The number of entries in the attachments array.
attachmentsThe address of an array identifying the attachments to be invalidated.
glInvalidateFramebuffer invalidates the content
of a specified set of attachments of a framebuffer. The framebuffer
whose content to invalidate is indicated by setting target
to the target to which it is bound. target may be
GL_FRAMEBUFFER, GL_READ_FRAMEBUFFER or
GL_DRAW_FRAMEBUFFER. GL_FRAMEBUFFER
is treated as if it were GL_DRAW_FRAMEBUFFER.
The set of attachments whose content to invalidate are specified in an array whose address is given
by attachments and which contains numAttachments
elements. The elements of attachments must be
GL_DEPTH_ATTACHMENT, GL_STENCIL_ATTACHMENT
GL_DEPTH_STENCIL_ATTACHMENT, or GL_COLOR_ATTACHMENTi,
where i is between zero and the value of GL_MAX_FRAMEBUFFER_ATTACHMENTS minus one.
Furthermore, if the default framebuffer is bound to target, then
attachments may contain GL_FRONT_LEFT,
GL_FRONT_RIGHT, GL_BACK_LEFT, GL_BACK_RIGHT,
GL_AUXi, GL_ACCUM,
GL_COLOR, GL_DEPTH, or GL_STENCIL, identifying that specific buffer.
GL_COLOR, is treated as GL_BACK_LEFT for a double-buffered context and
GL_FRONT_LEFT for a single-buffered context.
After glInvalidateFramebuffer is executed, the contents
of the specified attachments become undefined.
GL_INVALID_ENUM is generated if target is not one of the
accepted framebuffer target tokens.
GL_INVALID_ENUM is generated if any element of attachments is
not one of the accepted framebuffer attachment tokens.
GL_INVALID_OPERATION is generated if element of attachments is
GL_COLOR_ATTACHMENTi where i is greater than or equal
to the value of GL_MAX_COLOR_ATTACHMENTS.
glInvalidateTexSubImage, glInvalidateTexImage, glInvalidateBufferSubData, glInvalidateBufferData, glInvalidateSubFramebuffer.
Copyright © 2012 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/.