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Table of Contents
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 *pixels )
eqn not supported
- 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 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 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.
Texturing
maps a portion of a specified texture image onto each graphical 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.
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.
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 $log sub 2$max, 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 $("zoffset" ~+~ "depth") ~>~ (d~-~b)$, 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 format is neither GL_RGBA nor GL_BGRA.
glGetTexImage
glIsEnabled with argument GL_TEXTURE_3D
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)
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