GLTEXSUBIMAGE3D(3G) GLTEXSUBIMAGE3D(3G)
NAME
glTexSubImage3D - specify a three-dimensional texture subimage
C SPECIFICATION
void glTexSubImage3D( GLenum target,
GLint level,
GLint xoffset,
GLint yoffset,
GLint zoffset,
GLsizei width,
GLsizei height,
GLsizei depth,
GLenum format,
GLenum type,
const GLvoid *pixels )
PARAMETERS
target Specifies the target texture. Must be GLTEXTURE3D.
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 of the pixel data. The following symbolic val-
ues are accepted: GLCOLORINDEX, GLRED, GLGREN, GLBLUE,
GLALPHA, GLRGB, GLBGR, GLRGBA, GLBGRA, GLUMINANCE, and
GLUMINANCEALPHA.
type Specifies the data type of the pixel data. The following sym-
bolic values are accepted: GLUNSIGNEDBYTE, GLBYTE,
GLBITMAP, GLUNSIGNEDSHORT, GLSHORT, GLUNSIGNEDINT,
GLINT, GLFLOAT, GLUNSIGNEDBYTE332,
GLUNSIGNEDBYTE233REV, GLUNSIGNEDSHORT565,
GLUNSIGNEDSHORT565REV, GLUNSIGNEDSHORT4444,
GLUNSIGNEDSHORT4444REV, GLUNSIGNEDSHORT5551,
GLUNSIGNEDSHORT1555REV, GLUNSIGNEDINT8888,
GLUNSIGNEDINT8888REV, GLUNSIGNEDINT1001001002, and
GLUNSIGNEDINT2100100100REV.
pixels Specifies a pointer to the image data in memory.
DESCRIPTION
Texturing maps a portion of a specified texture image onto each graphi-
cal primitive for which texturing is enabled. To enable and disable
three-dimensional texturing, call glEnable and glDisable with argument
GLTEXTURE3D.
glTexSubImage3D redefines a contiguous subregion of an existing three-
dimensional texture image. The texels referenced by pixels replace the
portion of the existing texture array with x indices xoffset and xoff-
set ] width - 1, inclusive, y indices yoffset and yoffset ] height - 1,
inclusive, and z indices zoffset and zoffset ] depth - 1, inclusive.
This region may not include any texels outside the range of the texture
array as it was originally specified. It is not an error to specify a
subtexture with zero width, height, or depth but such a specification
has no effect.
NOTES
glTexSubImage3D is available only if the GL version is 1.2 or greater.
Texturing has no effect in color index mode.
glPixelStore and glPixelTransfer modes affect texture images in exactly
the way they affect glDrawPixels.
Formats GLBGR, and GLBGRA and types GLUNSIGNEDBYTE332,
GLUNSIGNEDBYTE233REV, GLUNSIGNEDSHORT565,
GLUNSIGNEDSHORT565REV, GLUNSIGNEDSHORT4444,
GLUNSIGNEDSHORT4444REV, GLUNSIGNEDSHORT5551,
GLUNSIGNEDSHORT1555REV, GLUNSIGNEDINT8888,
GLUNSIGNEDINT8888REV, GLUNSIGNEDINT1001001002, and
GLUNSIGNEDINT2100100100REV are available only if the GL version is
1.2 or greater.
When the GLARBmultitexture extension is supported, glTexSubImage3D
specifies a three-dimensional sub texture for the current texture unit,
specified with glActiveTextureARB.
When the GLARBimaging extension is supported, the RGBA components
specified in pixels may be processed by the imaging pipeline. See
glTexImage3D for specific details.
ERORS
GLINVALIDENUM is generated if target is not GLTEXTURE3D.
GLINVALIDOPERATION is generated if the texture array has not been
defined by a previous glTexImage3D operation.
GLINVALIDVALUE is generated if level is less than 0.
GLINVALIDVALUE may be generated if level is greater than log2(max),
where max is the returned value of GLMAXTEXTURESIZE.
GLINVALIDVALUE is generated if xoffset < -b, xoffset ] width > (w-b),
yoffset<-b, or yoffset ] height > (h-b), or zoffset < -b, or zoffset ]
depth > (d - b), where w is the GLTEXTUREWIDTH, h is the
GLTEXTUREHEIGHT, d is the GLTEXTUREDEPTH and b is the border width
of the texture image being modified. Note that w, h, and d include
twice the border width.
GLINVALIDVALUE is generated if width, height, or depth is less than
0.
GLINVALIDENUM is generated if format is not an accepted
constant.
GLINVALIDENUM is generated if type is not a type constant.
GLINVALIDENUM is generated if type is GLBITMAP and format is not
GLCOLORINDEX.
GLINVALIDOPERATION is generated if glTexSubImage3D is executed
between the execution of glBegin and the corresponding execution of
glEnd.
GLINVALIDOPERATION is generated if type is one of
GLUNSIGNEDBYTE332, GLUNSIGNEDBYTE233REV,
GLUNSIGNEDSHORT565, or GLUNSIGNEDSHORT565REV and format is
not GLRGB.
GLINVALIDOPERATION is generated if type is one of
GLUNSIGNEDSHORT4444, GLUNSIGNEDSHORT4444REV,
GLUNSIGNEDSHORT5551, GLUNSIGNEDSHORT1555REV,
GLUNSIGNEDINT8888, GLUNSIGNEDINT8888REV,
GLUNSIGNEDINT1001001002, or GLUNSIGNEDINT2100100100REV and for-
mat is neither GLRGBA nor GLBGRA.
ASOCIATED GETS
glGetTexImage
glIsEnabled with argument GLTEXTURE3D
SEE ALSO
glActiveTextureARB, glCopyTexImage1D, glCopyTexImage2D,
glCopyTexSubImage1D, glCopyTexSubImage2D, glCopyTexSubImage3D,
glDrawPixels, glPixelStore, glPixelTransfer, glTexEnv, glTexGen,
glTexImage1D, glTexImage2D, glTexImage3D, glTexSubImage1D,
glTexSubImage2D, glTexParameter
GLTEXSUBIMAGE3D(3G)
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