glTexSubImage3D
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 GL_TEXTURE_3D.
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 tex-
ture array.
yoffset Specifies a texel offset in the y direction within the tex-
ture array.
zoffset Specifies a texel offset in the z direction within the tex-
ture 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
values are accepted: GL_COLOR_INDEX, GL_RED, GL_GREEN,
GL_BLUE, GL_ALPHA, GL_RGB, GL_BGR, GL_RGBA, GL_BGRA,
GL_LUMINANCE, and GL_LUMINANCE_ALPHA.
type Specifies the data type of the pixel data. The following
symbolic values are accepted: GL_UNSIGNED_BYTE, GL_BYTE,
GL_BITMAP, 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.
pixels Specifies a pointer to the image data in memory.
DESCRIPTION
Texturing maps a portion of a specified texture image onto each graph-
ical primitive for which texturing is enabled. To enable and disable
three-dimensional texturing, call glEnable and glDisable with argument
GL_TEXTURE_3D.
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
xoffset+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 GL_BGR, and GL_BGRA and types 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 are available only if the GL version is
1.2 or greater.
When the GL_ARB_multitexture extension is supported, glTexSubImage3D
specifies a three-dimensional sub texture for the current texture
unit, specified with glActiveTextureARB.
When the GL_ARB_imaging extension is supported, the RGBA components
specified in pixels may be processed by the imaging pipeline. See
glTexImage3D for specific details.
ERRORS
GL_INVALID_ENUM is generated if target is not GL_TEXTURE_3D.
GL_INVALID_OPERATION is generated if the texture array has not been
defined by a previous glTexImage3D operation.
GL_INVALID_VALUE is generated if level is less than 0.
GL_INVALID_VALUE may be generated if level is greater than log2max,
where max is the returned value of GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if xoffset<−b, (xoffset+width)>(w−b),
yoffset<−b, or (yoffset+height)>(h−b), or zoffset<−b, or (zoff-
set+depth)>(d−b), where w is the GL_TEXTURE_WIDTH, h is the
GL_TEXTURE_HEIGHT, d is the GL_TEXTURE_DEPTH and b is the border width
of the texture image being modified. Note that w, h, and d include
twice the border width.
GL_INVALID_VALUE is generated if width, height, or depth is less than
0.
GL_INVALID_ENUM is generated if format is not an accepted
constant.
GL_INVALID_ENUM is generated if type is not a type constant.
GL_INVALID_ENUM is generated if type is GL_BITMAP and format is not
GL_COLOR_INDEX.
GL_INVALID_OPERATION is generated if glTexSubImage3D is executed
between the execution of glBegin and the corresponding execution of
glEnd.
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 for-
mat is neither GL_RGBA nor GL_BGRA.
ASSOCIATED GETS
glGetTexImage
glIsEnabled with argument GL_TEXTURE_3D
SEE ALSO
glActiveTextureARB(3G), glCopyTexImage1D(3G), glCopyTexImage2D(3G),
glCopyTexSubImage1D(3G), glCopyTexSubImage2D(3G),
glCopyTexSubImage3D(3G), glDrawPixels(3G), glPixelStore(3G),
glPixelTransfer(3G), glTexEnv(3G), glTexGen(3G), glTexImage1D(3G),
glTexImage2D(3G), glTexImage3D(3G), glTexSubImage1D(3G),
glTexSubImage2D(3G), glTexParameter(3G)
GLTEXSUBIMAGE3D(3G)
