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NAME
glTexSubImage1D, glTextureSubImage1D - specify a one-dimensional texture subimage
C SPECIFICATION
void glTexSubImage1D(GLenum target, GLint level, GLint xoffset, GLsizei width,
GLenum format, GLenum type, const GLvoid * pixels);
void glTextureSubImage1D(GLuint texture, GLint level, GLint xoffset, GLsizei width,
GLenum format, GLenum type, const void *pixels);
PARAMETERS
target
Specifies the target to which the texture is bound for glTexSubImage1D. Must be
GL_TEXTURE_1D.
texture
Specifies the texture object name for glTextureSubImage1D. The effective target of
texture must be one of the valid target values above.
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.
width
Specifies the width 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.
pixels
Specifies a pointer to the image data in memory.
DESCRIPTION
Texturing maps a portion of a specified texture image onto each graphical primitive for
which texturing is enabled. To enable or disable one-dimensional texturing, call
glEnable() and
glDisable with argument GL_TEXTURE_1D.
glTexSubImage1D and glTextureSubImage1D redefine a contiguous subregion of an existing
one-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. 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 width of 0, but such
a specification has no effect.
If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target (see
glBindBuffer()) while a texture image is specified, pixels is treated as a byte offset
into the buffer object's data store.
NOTES
glPixelStore() modes affect texture images.
glTexSubImage1D and glTextureSubImage1D specify a one-dimensional 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.
ERRORS
GL_INVALID_ENUM is generated if target or the effective target of texture is not one of
the allowable values.
GL_INVALID_OPERATION is generated by glTextureSubImage1D if texture is not the name of an
existing texture object.
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 log 2 max, where max is the
returned value of GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if xoffset < - b, or if xoffset + width > w - b, where w is
the GL_TEXTURE_WIDTH, and b is the width of the GL_TEXTURE_BORDER of the texture image
being modified. Note that w includes twice the border width.
GL_INVALID_VALUE is generated if width is less than 0.
GL_INVALID_OPERATION is generated if the texture array has not been defined by a previous
glTexImage1D() 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 pixels is not evenly divisible into the number of bytes
needed to store in memory a datum indicated by type.
ASSOCIATED GETS
glGetTexImage()
glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
VERSION SUPPORT
┌────────────────────┬───────────────────────────────────────────────────────────────────────┐
│ │ OpenGL Version │
├────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
│Function │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
│/ │ │ │ │ │ │ │ │ │ │ │ │ │
│Feature │ │ │ │ │ │ │ │ │ │ │ │ │
│Name │ │ │ │ │ │ │ │ │ │ │ │ │
├────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
│glTexSubImage1D │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
├────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
│glTextureSubImage1D │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ - │ ✔ │
└────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
SEE ALSO
glActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(),
glCopyTexSubImage2D(), glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(),
glTexImage2D(), glTexImage3D(), glTexParameter(), glTexSubImage2D(), glTexSubImage3D()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This
document is licensed under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group
[FIXME: source] 01/03/2018 GLTEXSUBIMAGE1D(3G)