glTexSubImage1D, glTextureSubImage1D — specify a one-dimensional texture subimage
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); |
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.
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
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.
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.
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
GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if
GL_TEXTURE_WIDTH, and
GL_TEXTURE_BORDER
of the texture image being modified.
Note that
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.
| OpenGL Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
glTexSubImage1D
|
✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
glTextureSubImage1D
|
- | - | - | - | - | - | - | - | - | - | - | ✔ |
glActiveTexture, glCopyTexImage1D, glCopyTexImage2D, glCopyTexSubImage1D, glCopyTexSubImage2D, glCopyTexSubImage3D, glPixelStore, glTexImage1D, glTexImage2D, glTexImage3D, glTexParameter, glTexSubImage2D, glTexSubImage3D
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/.