glTexSubImage3D — specify a three-dimensional texture subimage
void glTexSubImage3D( | GLenum target, |
GLint level, | |
GLint xoffset, | |
GLint yoffset, | |
GLint zoffset, | |
GLsizei width, | |
GLsizei height, | |
GLsizei depth, | |
GLenum format, | |
GLenum type, | |
const GLvoid * data) ; |
target
Specifies the target texture.
Must be GL_TEXTURE_3D
or GL_TEXTURE_2D_ARRAY
.
level
Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
xoffset
Specifies a texel offset in the x direction within the texture array.
yoffset
Specifies a texel offset in the y direction within the texture array.
zoffset
Specifies a texel offset in the z direction within the texture array.
width
Specifies the width of the texture subimage.
height
Specifies the height of the texture subimage.
depth
Specifies the depth of the texture subimage.
format
Specifies the format of the pixel data.
The following symbolic values are accepted:
GL_RED
,
GL_RG
,
GL_RGB
,
GL_BGR
,
GL_RGBA
,
GL_DEPTH_COMPONENT
, and
GL_STENCIL_INDEX
.
type
Specifies the data type of the pixel data.
The following symbolic values are accepted:
GL_UNSIGNED_BYTE
,
GL_BYTE
,
GL_UNSIGNED_SHORT
,
GL_SHORT
,
GL_UNSIGNED_INT
,
GL_INT
,
GL_FLOAT
,
GL_UNSIGNED_BYTE_3_3_2
,
GL_UNSIGNED_BYTE_2_3_3_REV
,
GL_UNSIGNED_SHORT_5_6_5
,
GL_UNSIGNED_SHORT_5_6_5_REV
,
GL_UNSIGNED_SHORT_4_4_4_4
,
GL_UNSIGNED_SHORT_4_4_4_4_REV
,
GL_UNSIGNED_SHORT_5_5_5_1
,
GL_UNSIGNED_SHORT_1_5_5_5_REV
,
GL_UNSIGNED_INT_8_8_8_8
,
GL_UNSIGNED_INT_8_8_8_8_REV
,
GL_UNSIGNED_INT_10_10_10_2
, and
GL_UNSIGNED_INT_2_10_10_10_REV
.
data
Specifies a pointer to the image data in memory.
Texturing maps a portion of a specified texture image onto each graphical primitive for which texturing is enabled.
glTexSubImage3D
redefines a contiguous subregion of an existing three-dimensional
or two-dimensioanl array texture image.
The texels referenced by data
replace the portion of the
existing texture array with x indices xoffset
and
yoffset
and
zoffset
and
If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER
target
(see glBindBuffer) while a texture image is
specified, data
is treated as a byte offset into the buffer object's data store.
The glPixelStore modes affect texture images.
glTexSubImage3D
specifies a three-dimensional or two-dimenaional array subtexture for the current texture unit,
specified with glActiveTexture.
GL_STENCIL_INDEX
is accepted for format
only if the GL version
is 4.4 or higher.
GL_INVALID_ENUM
is generated if /target
is not GL_TEXTURE_3D
or GL_TEXTURE_2D_ARRAY
.
GL_INVALID_ENUM
is generated if format
is not an accepted
format constant.
GL_INVALID_ENUM
is generated if type
is not a type constant.
GL_INVALID_VALUE
is generated if level
is less than 0.
GL_INVALID_VALUE
may be generated if level
is greater
than
GL_MAX_TEXTURE_SIZE
.
GL_INVALID_VALUE
is generated if
GL_TEXTURE_WIDTH
,
GL_TEXTURE_HEIGHT
,
GL_TEXTURE_DEPTH
and
GL_INVALID_VALUE
is generated if width
, height
, or depth
is less than 0.
GL_INVALID_OPERATION
is generated if the texture array has not
been defined by a previous glTexImage3D
or glTexStorage3D operation.
GL_INVALID_OPERATION
is generated if type
is one of
GL_UNSIGNED_BYTE_3_3_2
,
GL_UNSIGNED_BYTE_2_3_3_REV
,
GL_UNSIGNED_SHORT_5_6_5
, or
GL_UNSIGNED_SHORT_5_6_5_REV
and format
is not GL_RGB
.
GL_INVALID_OPERATION
is generated if type
is one of
GL_UNSIGNED_SHORT_4_4_4_4
,
GL_UNSIGNED_SHORT_4_4_4_4_REV
,
GL_UNSIGNED_SHORT_5_5_5_1
,
GL_UNSIGNED_SHORT_1_5_5_5_REV
,
GL_UNSIGNED_INT_8_8_8_8
,
GL_UNSIGNED_INT_8_8_8_8_REV
,
GL_UNSIGNED_INT_10_10_10_2
, or
GL_UNSIGNED_INT_2_10_10_10_REV
and format
is neither GL_RGBA
nor GL_BGRA
.
GL_INVALID_OPERATION
is generated if format
is GL_STENCIL_INDEX
and the base internal format is not GL_STENCIL_INDEX
.
GL_INVALID_OPERATION
is generated if a non-zero buffer object name is bound to the
GL_PIXEL_UNPACK_BUFFER
target and the buffer object's data store is currently mapped.
GL_INVALID_OPERATION
is generated if a non-zero buffer object name is bound to the
GL_PIXEL_UNPACK_BUFFER
target and the data would be unpacked from the buffer
object such that the memory reads required would exceed the data store size.
GL_INVALID_OPERATION
is generated if a non-zero buffer object name is bound to the
GL_PIXEL_UNPACK_BUFFER
target and data
is not evenly divisible
into the number of bytes needed to store in memory a datum indicated by type
.
glActiveTexture, glCopyTexImage1D, glCopyTexImage2D, glCopyTexSubImage1D, glCopyTexSubImage2D, glCopyTexSubImage3D, glPixelStore, glTexImage1D, glTexImage2D, glTexImage3D, glTexSubImage1D, glTexSubImage2D, glTexParameter
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.